2548 lines
122 KiB
Perl
2548 lines
122 KiB
Perl
#!/usr/bin/perl -w
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#
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# ============================== SUMMARY =====================================
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#
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# Program : check_memcached.pl
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# Version : 0.83
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# Date : Mar 23, 2013
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# Author : William Leibzon - william@leibzon.org
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# Licence : GPL (main code) summary below and full text at http://www.fsf.org/licenses/gpl.txt
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# LGPL (library functions) full text at http://www.fsf.org/licenses/lgpl.txt
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#
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# =========================== PROGRAM LICENSE =================================
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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# ===================== INFORMATION ABOUT THIS PLUGIN =========================
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#
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# This is Memcached Check plugin. It gets stats variables and allows to set thresholds
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# on their value or their rate of change. It can measure response time, calculate
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# hitrate, memory utilization and other data. The plugin is based on check_mysqld.pl.
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#
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# It also returns status variables as perfomance data for further nagios 2.0
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# post-processing, you can find graph templates NagiosGrapher & PNP4Nagios at:
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# http://william.leibzon.org/nagios/
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#
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# This program is written and maintained by:
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# William Leibzon - william(at)leibzon.org
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#
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# ============================= SETUP NOTES ====================================
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#
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# Make sure to install perl Cache::Memcached library from CPAN first.
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#
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# This plugin checks Memcached and measures response which can be used for
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# threshold checks. It also retrieves various statistics data available with
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# memcache 'stats' command (what you get when you telnet to the port and
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# do 'stats') and allows to set thresholds either on their direct values
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# or on rate of change of those variables. Plugin also calculates other useful
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# statistics like Hitrate (calculated on rate of change unlike all other plugins
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# that do it based on totals for all the time) and Memory Utilization and allows
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# to set thresholds on their values. All variables can be returned back as
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# performance data for graphing and pnp4nagios template should be available
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# with this plugin on the same site you downloaded it from.
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#
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# For help on what parameters this plugin accepts you can just do
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# ./check_memcached.pl --help
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#
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# 1. Connection Parameters
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#
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# Plugin currently does not support authentication so the only connection
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# parameters are "-H hostname" and "-p port". The default port is 11211
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# and you must specify the hostname (if localhost specify it as -H 127.0.0.1)
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#
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# 2. Response Time, HitRate, Memory Utilization
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#
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# To get response time you use "-T" or "--response_time" option. By itself
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# it will cause output of respose time at the status line. You can also use
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# it as "-T warn,crit" to specify warning and critical thresholds.
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#
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# To get hitrate the option is "-R" or "--hitrate". If previous performance
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# data is not feed to plugin (-P option, see below) the plugin calculates
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# it as total hitrate over life of memcached process. If -P is specified
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# and previous performance data is feed back, the data is based on real
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# hitrate with lifelong info also given in paramphesis. As with -T you
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# can specify -R by itself or with thresholds as -R warn,crit
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#
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# Memory utilization corresponds to what some others call "size". This is
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# percent of max memory currently in use. The option is -U or --utilization
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# and as you probably guessed can be used by itself or as -U warn,crit
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#
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# 3. Options for Checking Variables
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#
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# All status variables from memcached can be checked with the plugin. For some
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# status variables separate long option is provided to specify threshold.
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# --curr_connections=<thresholds>
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#
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# You can also specify all variables together with -a (--variables) option.
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# For example:
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# -a curr_connections,evictions
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# When you do above results are included in status output line and you
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# are required to specify thresholds with -w or --warn and -c or --crit
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# with exactly number of thresholds as a number of variables specified
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# in -a. If you simply want variable values on status line without specifying
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# any threshold, use ~ in place of threshold value or skip value but specify
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# all apropriate commas. For example:
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# -a curr_connections,evications -w ~,~ -c ~,~
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# OR -a curr_connections,evications -w , -c ,
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#
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# If you use new syntax with a long option for specific stats variables, you can
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# specify settings for how to handle them. With each option you can use one or more
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# threshold specifiers:
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# NAME:<string> - Overrides name for this variable for use in status and PERF output
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# PATTERN:<regex> - Regular Expression that allows to match multiple data results
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# WARN:threshold - warning alert threshold
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# CRIT:threshold - critical alert threshold
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# Threshold is a value (usually numeric) which may have the following prefix:
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# > - warn if data is above this value (default for numeric values)
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# < - warn if data is below this value (must be followed by number)
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# = - warn if data is equal to this value (default for non-numeric values)
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# ! - warn if data is not equal to this value
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# Threshold can also be specified as a range in two forms:
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# num1:num2 - warn if data is outside range i.e. if data<num1 or data>num2
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# \@num1:num2 - warn if data is in range i.e. data>=num1 && data<=num2
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# ABSENT:OK|WARNING|CRITICAL|UNKNOWN - Nagios alert (or lock of thereof) if data is absent
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# ZERO:OK|WARNING|CRITICAL|UNKNOWN - Nagios alert (or lock of thereof) if result is 0
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# DISPLAY:YES|NO - Specifies if data should be included in nagios status line output
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# PERF:YES|NO - Output in performance data or not (always YES if -F option is used)
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# UOM:<string> - Unit Of Measurement symbol to add to perf data - 'c','%','s','B'
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# This is used by prorams that graph perf data such as PNP
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#
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# These can be specified in any order separated by ",". For example:
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# --curr_connectins=CRIT:>100,WARN:>50,ABSENT:CRITICAL,ZERO:OK,DISPLAY:YES,PERF:YES
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#
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# Variables that are not known to plugin and don't have specific long option (or even if
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# they do) can be specified using general long option --check or --option or -o
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# (all are aliases for same option):
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# --check=NAME:curr_connections,CRIT:>100,WARN:>50,ABSENT:CRITICAL,DISPLAY:YES,PERF:YES
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#
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# Then NAME is used to specify what to match and multiple data vars maybe matched
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# with PATTERN regex option (and please only use PATTERN with --check and not confuse
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# plugin by using it in a named long option). Either NAME or PATTERN are required.
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# Example of using regex to specify thresholds for slabs-specific data is:
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# -s misc,malloc,slabs,items \
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# -o "PATTERN:slabs_\d+_chunks_per_page,DISPLAY:NO,PERF:YES,WARN:>5000,CRIT:>20000"
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#
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# 4. Memcache Statistics Variables and Calculating their Rate of Change
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#
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# All statistics variables from memcached 'stats' can be checked with the plugin.
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# And as some people know there are actually several stats arrays in memcached.
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# By default the plugin will get statistics for 'misc' and 'malloc'. You can
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# specify a list of statistics array names (corresponding to 'stats name'
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# command in memcached) with -s or --stats command. Known arrays are:
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# misc, malloc, sizes, maps, cachedump, slabs, items
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# And example of trying to retrieve all of them is:
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# -s misc,malloc,sizes,maps,cachedump,slabs,items
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# However not all of them will have data in your system and arrays like
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# sizes provide too much data (how many items stored on each size)
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# for standard use.
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#
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# To see stat variables in plugin status output line and or specify thresholds
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# based on their values you would use -a or --variables argument. For example:
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# -a curr_connections,evictions
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# You must specify same number of warning and critical thresholds with
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# -w or --warn and -c or --crit argument as a number of variables specified
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# in -a. If you simply want variable values on status without checking their value
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# then either use ~ in place of threshold value or nothing at all. For example:
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# -a curr_connections,evictions -w ~,~ -c ~,~
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# OR -a curr_connections,evictions -w , -c ,
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#
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#
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# If you want to check rate of change rather than actual value you can do this
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# by specifying it as '&variable' such as "&total_connections" or "variable_rate"
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# which is "total_connections_rate" and is similar to 'curr_connections' variable.
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# By default it would be reported in the output as 'variable_rate' though '&variable'
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# is a format used internally by plugin. As an alternative you can specify how to
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# label these with --rate_label option where you can specify prefix and/or suffix.
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# For example '--rate_label=dt_' would have the output being "dt_total_connections'
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# where as '---rate_label=,_rate' is plugin default giving 'total_connections_rate'.
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# You can use these names with -a and -A such as:
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# --rate_label=,_rate -a total_connections_rate -w 1000 -c ~
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#
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# Now in order to be able to calculate rate of change, the plugin needs to
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# know values of the variables from when it was run the last time. This
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# is done by feeding it previous performance data with a -P option.
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# In commands.cfg this would be specified as:
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# -P "$SERVICEPERFDATA$"
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# And don't forget the quotes, in this case they are not just for documentation.
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#
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# 5. Threshold Specification
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#
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# The plugin fully supports Nagios plug-in specification for specifying thresholds:
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# http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT
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#
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# And it supports an easier format with the following one-letter prefix modifiers:
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# >value : issue alert if data is above this value (default for numeric value)
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# <value : issue alert if data is below this value (must be followed by number)
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# =value : issue alert if data is equal to this value (default for non-numeric)
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# !value : issue alert if data is NOT equal to this value
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#
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# There are two two specifications of range formats as with other nagios plugins:
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# number1:number2 issue alert if data is OUTSIDE of range [number1..number2]
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# i.e. alert if data<$number1 or data>$number2
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# @number1:number2 issue alert if data is WITHIN range [number1..number2]
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# i.e. alert if data>=$number and $data<=$number2
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#
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# The plugin will attempt to check that WARNING values is less than CRITICAL
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# (or greater for <). A special prefix modifier '^' can be used to disable these
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# checks. A quick example of such special use is '--warn=^<100 --crit=>200' which
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# means warning alert if value is < 100 and critical alert if its greater than 200.
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#
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# 6. Performance Data
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#
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# Using '-f' option causes values of all variables you specified in -a as
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# well as response time from -T, hitrate from -R and memory use from -U
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# to go out as performance data for Nagios graphing programs that can use it.
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#
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# You may also directly specify which variables are to be return as performance data
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# with '-A' option. If you use '-A' by itself and not specify any variables or use
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# special special value of '*' (as in '-A *') the plugin will output all variables,
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# which is really useful for finding what data you can chck with this plugin.
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#
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# The plugin will output threshold values as part of performance data as specified at
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# http://nagiosplug.sourceforge.net/developer-guidelines.html#AEN201
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# And don't worry about using non-standard >,<,=,~ prefixes, all of that would get
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# converted into nagios threshold format for performance output
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#
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# The plugin is smart enough to add 'c' suffix for known COUNTER variables to
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# values in performance data. Known variables are specifed in an array you can
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# find at the top of the code (further below) and plugin author does not claim
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# to have identified all variables correctly. Please email if you find an error
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# or want to add more variables.
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#
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# As noted above performance data is also used to calcualte rate of change
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# by feeding it back with -P option. In that regard even if you did not specify
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# -f or -A but you have specified &variable, its actual data would be sent out
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# in performance output. Additionally last time plugin was run is also in
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# performance data as special _ptime variable.
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#
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# 7. Example of Nagios Config Definitions
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#
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# A. Sample command and service definitions using -a -c -w options (old style):
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#
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# define command {
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# command_name check_memcached
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# command_line $USER1$/check_memcached.pl -H $HOSTADDRESS$ -p $ARG1$ -T $ARG2$ -R $ARG3$ -U $ARG4$ -a curr_connections,evictions -w ~,~ -c ~,~ -f -A 'utilization,hitrate,response_time,curr_connections,evictions,cmd_set,bytes_written,curr_items,uptime,rusage_system,get_hits,total_connections,get_misses,bytes,time,connection_structures,total_items,limit_maxbytes,rusage_user,cmd_get,bytes_read,threads,rusage_user_ms,rusage_system_ms,cas_hits,conn_yields,incr_misses,decr_misses,delete_misses,incr_hits,decr_hits,delete_hits,cas_badval,cas_misses,cmd_flush,listen_disabled_num,accepting_conns,pointer_size,pid' -P "$SERVICEPERFDATA$"
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# }
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#
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# Arguments and thresholds are:
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# ARG1 : Port
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# ARG2 : Hitrate Threshold. Below it is <60% for warning, <30% for critical
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# ARG3 : Response Time Threshold. Below it is >0.1s for WARNING, >0.2s for critical
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# ARG4 : Utilization/Size Threshold. Below it is >95% for warning, >98% for critical
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#
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# define service {
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# use prod-service
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# service_description Memcached: Port 11212
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# check_command check_memcached!11212!'>0.1,>0.2'!'<60,<30'!'>95,>98'
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# hostgroups memcached
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# }
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#
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# B. Command line definition using long option (new style)
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#
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# define command {
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# command_name check_memcached
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# command_line $USER1$/check_memcached.pl -H $HOSTADDRESS$ -p $ARG1$ -T $ARG2$ -R $ARG3$ -U $ARG4$ --curr_connections="ZERO:WARNING,DISPLAY:YES,PERF:YES,$ARG5$" --evictions="ZERO:OK,DISPLAY:YES,PERF:YES,$ARG6$" -f -A 'utilization,hitrate,response_time,curr_connections,evictions,cmd_set,bytes_written,curr_items,uptime,rusage_system,get_hits,total_connections,get_misses,bytes,time,connection_structures,total_items,limit_maxbytes,rusage_user,cmd_get,bytes_read,threads,rusage_user_ms,rusage_system_ms,cas_hits,conn_yields,incr_misses,decr_misses,delete_misses,incr_hits,decr_hits,delete_hits,cas_badval,cas_misses,cmd_flush,listen_disabled_num,accepting_conns,pointer_size' -P "$SERVICEPERFDATA$"
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# }
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#
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# define service {
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# use prod-service
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# service_description Memcached: Port 11212
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# check_command check_memcached!11212!'WARN:>0.1,CRIT:>0.2'!'WARN:<60,CRIT:<30'!'WARN:>95,CRIT:>98'!'WARN:>200,CRIT:>500'!'WARN:>100'
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# hostgroups memcached
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# }
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#
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# C. Example of command-line use:
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# /usr/lib/nagios/plugins/check_memcached.pl -H localhost -a 'curr_connections,evictions' -w ~,~ -c ~,~ -s misc,malloc,slabs -U -A -R -T -f -v
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#
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# In above the -v option means "verbose" and with it plugin will output some debugging
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# information about what it is doing. The option is not intended to be used when plugin
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# is called from nagios itself.
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#
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# ======================= VERSION HISTORY and TODO ================================
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#
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# The plugins is written by reusing code my check_mysqld.pl which similarly to
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# this plugin allows to get STATUS variables and use these for nagios tests.
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# check_mysqld.pl has history going back to 2004.
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#
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# [0.5 - Mar 2012] First version of the code based on check_mysqld.pl 0.93
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# This is being released as 0.5 because its coming from
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# a very mature code of check_mysqld and has a lot of options
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# If there are no major issues found with this plugin, next
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# version will be 1.0
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#
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# [0.6 - Apr 2012] Added support for re-using old performance data to calculate
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# rate of change for certain variables. This also changes how
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# hitrate is calcualted as now if previous performance data
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# is available, hitrate would be #misses/#total from last check
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# rather than #misses/#total from start of statistics.
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# [0.61 - Apr 2012] Documentation fixes and small bugs
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# [0.62 - May 2012] Cache::Memcached library has bugs and not always provided hash of
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# array with results for each statistics just giving raw memcached
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# data. This effected 'items' and 'slabs' statistics and maybe others.
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# Plugin can now handle parsing such data into separate variables.
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# [0.63 - Jun 10 2012] Documentation fixes.
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# Default rate variable name changed from &Delta_variable to
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# variable_rate to be in sync with check_redis.pl. One of the reasons
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# is that in the future I'll plan to add variables that are real
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# delta i.e new_value-old_value and not (new_value-old_value)/time
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# Also I've decided that specifying prefix & suffix or rate label
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# variables will not be one-letter option and only long-name option
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# As such -L option has been depreciated. I'm doing it all early
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# because only few currently use this and its not too late to change
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# [0.64 - Jun 16, 2012] Added support to specify filename to '-v' option
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# for debug output and '--debug' as alias to '--verbose'
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#
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# [0.7 - July 18, 2012] Rewrote parts of thresholds checking code and moved code
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# that checks and parses thresholds from main into separate
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# functions that are to become part of plugin library.
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# Added support for variable thresholds specified as:
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# option=WARN:threshold,CRIT:threshold,ABSENT:OK|WARNING|CRITICAL,ZERO:..
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# which are to be used for stats-variable based long options such as
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# --connected_clients=WARN:threshold,CRIT:threshold
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# and added DISPLAY:YES|NO and PERF specifiers for above too.
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# [0.71 - Aug 18, 2012] Fixed bug with hitrate perf output reported perf by daryl herzman
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#
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# [0.8 - Aug 28, 2012] A lot of internal rewrites in the library. Its now not just a
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# a set of functions, but a proper object library with internal
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# variables hidden from outside. Support has also been added for
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# regex matching with PATTERN specifier and for generalized
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# --check option that can be used where specific long option is
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# not available. For use with that option also added UOM specifier.
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# [0.81 - Sep 04, 2012] Fix bug in the library on handling absent data
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# [0.82 - Nov 16, 2012] Bug fix in memory utilization, noticed and fixed by Herman van Rink
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# [0.83 - Mar 23, 2013] Buf fix in parse_threshold function of the embedded library
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#
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# 1. Library Enhancements (will apply to multiple plugins that share common code)
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# (a) Add '--extra-opts' to allow to read options from a file as specified
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# at http://nagiosplugins.org/extra-opts. This is TODO for all my plugins
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# (b) [DONE]
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# In plans are to allow long options to specify thresholds for known variables.
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# These would mean you specify '--connected_clients' in similar way to '--hitrate'
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# Internally these would be convered into -A, -w, -c as appropriate an used
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# together with these options. So in practice it will now allow to get any data
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# just a different way to specify options for this plugin.
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# (c) Allow regex when selecting variable name(s) with -a, this will be enabled with
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# a special option and not be default
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# [DONE]
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#
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# 2. Memcache Specific
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# (a) Support SASL Authentication
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# (b) There has been a request to allow to specify threshold checks both for each slab
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# (which is possible to do now starting with 0.62 version of the plugin) and for
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# all slabs as well. This applies to "items" and "slabs" statistics and will probably
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# be implimented by allowing regex checks in place of specific variable name.
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# [DONE]
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#
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# Others are welcome recommand a new feature to be added here. If so please email to
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# william@leibzon.org.
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# And don't worry, I'm not a company with some hidden agenda to use your idea
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# but an actual person who you can easily get hold of by email, find on forums
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# and on Nagios conferences. More info on my nagios work is at:
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# http://william.leibzon.org/nagios/
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# Above site should also have PNP4Nagios template for this and other plugins.
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#
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# ============================ START OF PROGRAM CODE =============================
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use strict;
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use IO::Socket;
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use Time::HiRes;
|
|
use Text::ParseWords;
|
|
use Cache::Memcached;
|
|
use Getopt::Long qw(:config no_ignore_case);
|
|
|
|
# default hostname, port, database, user and password, see NOTES above
|
|
my $HOSTNAME= 'localhost';
|
|
my $PORT= 11211;
|
|
|
|
# Add path to additional libraries if necessary
|
|
use lib '/usr/lib/nagios/plugins';
|
|
our $TIMEOUT;
|
|
our %ERRORS;
|
|
eval 'use utils qw(%ERRORS $TIMEOUT)';
|
|
if ($@) {
|
|
$TIMEOUT = 20;
|
|
%ERRORS = ('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4);
|
|
}
|
|
|
|
my $Version='0.83';
|
|
|
|
# This is a list of known statistics variables (plus few variables added by plugin),
|
|
# used in order to designate COUNTER variables with 'c' in perfout for graphing programs
|
|
my %KNOWN_STATUS_VARS = (
|
|
'version' => [ 'misc', 'VERSION', '' ], # memcached version
|
|
'utilization' => [ 'calculated', 'GAUGE', '%' ], # calculated by plugin
|
|
'hitrate' => [ 'calculated', 'GAUGE', '%' ], # calculated by plugin
|
|
'response_time' => [ 'time_measure', 'GAUGE', 's' ], # measured by plugin
|
|
'curr_connections' => [ 'misc', 'GAUGE', '', "Number of Current Connections" ],
|
|
'evictions' => [ 'misc', 'COUNTER', 'c', "Total Number of Evictions from Start" ],
|
|
'reclaimed' => [ 'misc', 'COUNTER', 'c', "Total Number of Reclaimed Entries from Start" ],
|
|
'bytes' => [ 'misc', 'GAUGE', 'B', "Amount of Data Stored in Bytes" ],
|
|
'connection_structures' => [ 'misc', 'GAUGE', '', "Number of Connection Structures" ],
|
|
'time' => [ 'misc', 'COUNTER', 's' ],
|
|
'total_items' => [ 'misc', 'COUNTER', 'c', "Total Items Stored from Start" ],
|
|
'cmd_set' => [ 'misc', 'COUNTER', 'c' ],
|
|
'bytes_written' => [ 'misc', 'COUNTER', 'c', "Total Number of Bytes Written to Cache" ],
|
|
'curr_items' => [ 'misc', 'GAUGE', '', "Number of Items Currently Stored" ],
|
|
'limit_maxbytes' => [ 'misc', 'GAUGE', 'B', "Maximum memory available for storage" ],
|
|
'uptime' => [ 'misc', 'COUNTER', 's', "Uptime in Seconds" ],
|
|
'rusage_user' => [ 'misc', 'COUNTER', 's' ],
|
|
'cmd_get' => [ 'misc', 'COUNTER', 'c', "Total Number of Get Commands from Start" ],
|
|
'rusage_system' => [ 'misc', 'COUNTER', 's' ],
|
|
'get_hits' => [ 'misc', 'COUNTER', 'c', "Total Number of Hits from Start" ],
|
|
'bytes_read' => [ 'misc', 'COUNTER', 'c', "Total Number of Bytes Read from Cache" ],
|
|
'threads' => [ 'misc', 'GAUGE', '', "Number of running Threads" ],
|
|
'rusage_user_ms' => [ 'misc', 'COUNTER', 'c' ], # this is round(rusage_user*1000)
|
|
'rusage_system_ms' => [ 'misc', 'COUNTER', 'c' ], # this is round(rusage_system*1000)
|
|
'total_connections' => [ 'misc', 'COUNTER', 'c', "Number of Connections made from Start" ],
|
|
'get_misses' => [ 'misc', 'COUNTER', 'c', "Total Misses from Start" ],
|
|
'total_free' => [ 'malloc', 'GAUGE', 'B', "Amount of Free Memory in bytes" ],
|
|
'releasable_space' => [ 'malloc', 'GAUGE', 'B' ],
|
|
'free_chunks' => [ 'malloc', 'GAUGE', '' ],
|
|
'fastbin_blocks' => [ 'malloc', 'GAUGE', '' ],
|
|
'arena_size' => [ 'misc', 'GAUGE', '' ],
|
|
'total_alloc' => [ 'malloc', 'GAUGE', 'B' ],
|
|
'max_total_alloc' => [ 'malloc', 'GAUGE', '' ],
|
|
'mmapped_regions' => [ 'malloc', 'GAUGE', '' ],
|
|
'mmapped_space' => [ 'malloc', 'GAUGE', '' ],
|
|
'fastbin_space' => [ 'malloc', 'GAUGE', '' ],
|
|
'auth_cmds' => [ 'misc', 'COUNTER', 'c', "Total Number of Auth Commands from Start" ],
|
|
'auth_errors' => [ 'misc', 'COUNTER', 'c', "Total Number of Auth Errors from Start" ],
|
|
'pid' => [ 'misc', 'STATUSINFO', '' ],
|
|
);
|
|
|
|
# Here you can also specify which variables should go into perf data,
|
|
# For right now it is 'GAUGE', 'COUNTER', 'DATA' (but not 'TEXTDATA'), and 'BOOLEAN'
|
|
# you may want to remove BOOLEAN if you don't want too much data
|
|
my $PERF_OK_STATUS_REGEX = 'GAUGE|COUNTER|^DATA$|BOOLEAN';
|
|
|
|
# ============= MAIN PROGRAM CODE - DO NOT MODIFY BELOW THIS LINE ==============
|
|
|
|
my $o_host= undef; # hostname
|
|
my $o_port= undef; # port
|
|
my $o_help= undef; # help option
|
|
my $o_verb= undef; # verbose mode
|
|
my $o_version= undef; # version info option
|
|
my $o_variables=undef; # list of variables for warn and critical
|
|
my $o_perfvars= undef; # list of variables to include in perfomance data
|
|
my $o_warn= undef; # warning level option
|
|
my $o_crit= undef; # Critical level option
|
|
my $o_perf= undef; # Performance data option
|
|
my @o_check= (); # General check option that maybe repeated more than once
|
|
my $o_timeout= undef; # Timeout to use - note that normally timeout is take from nagios anyway
|
|
my $o_mdsopt= undef; # Stat List to get data for
|
|
my @o_mdslist= ('misc','malloc'); # Default List, if -S option is entered, this is replaced
|
|
my $o_timecheck=undef; # threshold spec for connection time
|
|
my $o_hitrate= undef; # threshold spec for hitrate%
|
|
my $o_utilsize= undef; # threshold spec for utilization%
|
|
my $o_prevperf= undef; # performance data given with $SERVICEPERFDATA$ macro
|
|
my $o_prevtime= undef; # previous time plugin was run $LASTSERVICECHECK$ macro
|
|
my $o_ratelabel=undef; # prefix and suffix for creating rate variables
|
|
my $o_rsuffix='_rate'; # default rate variable name suffix
|
|
my $o_rprefix="";
|
|
|
|
## Additional global variables
|
|
my $memd= undef; # DB connection object
|
|
|
|
sub p_version { print "check_memcached.pl version : $Version\n"; }
|
|
|
|
sub print_usage_line {
|
|
print "Usage: $0 [-v [debugfilename]] -H <host> [-p <port>] [-s <memcache stat arrays>] [-a <memcache statistics variables> -w <variables warning thresholds> -c <variables critical thresholds>] [-A <performance output variables>] [-T [contime_warn,contime_crit]] [-R [hitrate_warn,hitrate_crit]] [-U [utilization_size_warn,utilization_size_crit]] [-f] [-T <timeout>] [-V] [-P <previous performance data in quoted string>] [-o <threshold specification with name or pattern>]\n";
|
|
}
|
|
|
|
sub print_usage {
|
|
print_usage_line();
|
|
print "For more details on options do: $0 --help\n";
|
|
}
|
|
|
|
sub help {
|
|
my $nlib = shift;
|
|
|
|
print "Memcache Check for Nagios version ",$Version,"\n";
|
|
print " by William Leibzon - william(at)leibzon.org\n\n";
|
|
print "This is memcache monitoring plugin, it lets you do threshold checks on status variables\n";
|
|
print "and returns performance data for graphing and further processing. The plugin also measures\n";
|
|
print "access time and calculates hitrate and memory utilization\n\n";
|
|
print_usage_line();
|
|
print <<EOT;
|
|
|
|
General and Server Connection Options:
|
|
-v, --verbose[=FILENAME], --debug[=FILENAME]
|
|
Print extra debugging information.
|
|
If filename is specified instead of STDOUT the debug data is written to that file.
|
|
-h, --help
|
|
Print this detailed help screen
|
|
-H, --hostname=ADDRESS
|
|
Hostname or IP Address to check
|
|
-p, --port=INTEGER
|
|
port number (default: 3306)
|
|
-t, --timeout=NUMBER
|
|
Allows to set timeout for execution of this plugin. This overrides nagios default.
|
|
-s, --stat=<list of stat arrays>
|
|
This allows to list stat arrays that would be queried (separated by ',').
|
|
Supported memcache statistics array are:
|
|
misc, malloc, sizes, maps, cachedump, slabs, items
|
|
If this option is not specified, the plugin will check only 'misc' and 'malloc'
|
|
-V, --version
|
|
Prints version number
|
|
|
|
Variables and Thresholds Set as List:
|
|
-a, --variables=STRING[,STRING[,STRING...]]
|
|
List of variables from memcache statistics data to do threshold checks on.
|
|
The default (if option is not used) is not to monitor any variable.
|
|
The variable name should be prefixed with '&' to check its rate of
|
|
change over time rather than actual value.
|
|
-w, --warn=STR[,STR[,STR[..]]]
|
|
This option can only be used if '--variables' (or '-a') option above
|
|
is used and number of values listed here must exactly match number
|
|
of variables specified with '-a'. The values specify warning threshold
|
|
for when Nagios should send WARNING alert. These values are usually
|
|
numbers and can have the following prefix modifiers:
|
|
> - warn if data is above this value (default for numeric values)
|
|
< - warn if data is below this value (must be followed by number)
|
|
= - warn if data is equal to this value (default for non-numeric values)
|
|
! - warn if data is not equal to this value
|
|
~ - do not check this data (must not be followed by number or ':')
|
|
^ - for numeric values this disables check that warning < critical
|
|
Threshold values can also be specified as range in two forms:
|
|
num1:num2 - warn if data is outside range i.e. if data<num1 or data>num2
|
|
\@num1:num2 - warn if data is in range i.e. data>=num1 && data<=num2
|
|
-c, --crit=STR[,STR[,STR[..]]]
|
|
This option can only be used if '--variables' (or '-a') option above
|
|
is used and number of values listed here must exactly match number of
|
|
variables specified with '-a'. The values specify critical threshold
|
|
for when Nagios should send CRITICAL alert. The format is exactly same
|
|
as with -w option except no '^' prefix.
|
|
|
|
Performance Data Processing Options:
|
|
-f, --perfparse
|
|
This should only be used with '-a' and causes variable data not only as part of
|
|
main status line but also as perfparse compatible output (for graphing, etc).
|
|
-A, --perfvars=[STRING[,STRING[,STRING...]]]
|
|
This allows to list variables which values will go only into perfparse
|
|
output (and not for threshold checking). The option by itself (emply value)
|
|
is same as a special value '*' and specify to output all variables.
|
|
-P, --prev_perfdata
|
|
Previous performance data (normally put '-P \$SERVICEPERFDATA\$' in nagios
|
|
command definition). This is used to calculate rate of change for counter
|
|
statistics variables and for proper calculation of hitrate.
|
|
--rate_label=[PREFIX_STRING[,SUFFIX_STRING]]
|
|
Prefix or Suffix label used to create a new variable which has rate of change
|
|
of another base variable. You can specify PREFIX or SUFFIX or both. Default
|
|
if not specified is '_rate' suffix string i.e. --rate_label=,_rate
|
|
|
|
General Check Option (all 3 forms equivalent, can be repated more than once):
|
|
-o <list of specifiers>, --option=<list of specifiers>, --check=<list of specifiers>
|
|
where specifiers are separated by , and must include NAME or PATTERN:
|
|
NAME:<string> - Default name for this variable as you'd have specified with -v
|
|
PATTERN:<regex> - Regular Expression that allows to match multiple data results
|
|
WARN:threshold - warning alert threshold
|
|
CRIT:threshold - critical alert threshold
|
|
Threshold is a value (usually numeric) which may have the following prefix:
|
|
> - warn if data is above this value (default for numeric values)
|
|
< - warn if data is below this value (must be followed by number)
|
|
= - warn if data is equal to this value (default for non-numeric values)
|
|
! - warn if data is not equal to this value
|
|
Threshold can also be specified as a range in two forms:
|
|
num1:num2 - warn if data is outside range i.e. if data<num1 or data>num2
|
|
\@num1:num2 - warn if data is in range i.e. data>=num1 && data<=num2
|
|
ABSENT:OK|WARNING|CRITICAL|UNKNOWN - Nagios alert (or lock of thereof) if data is absent
|
|
ZERO:OK|WARNING|CRITICAL|UNKNOWN - Nagios alert (or lock of thereof) if result is 0
|
|
DISPLAY:YES|NO - Specifies if data should be included in nagios status line output
|
|
PERF:YES|NO - Output results as performance data or not (always YES if asked for rate)
|
|
UOM:<string> - Unit Of Measurement symbol to add to perf data - 'c','%','s','B'
|
|
|
|
Measured/Calculated Data:
|
|
-T, --response_time=[WARN,CRIT]
|
|
If this is used as just -T the plugin will measure and output connection
|
|
response time in seconds. With -f this would also be provided on perf variables.
|
|
You can also specify values for this parameter, these are interprted as
|
|
WARNING and CRITICAL thresholds (separated by ',').
|
|
-R, --hitrate=[WARN,CRIT]
|
|
Calculates Hitrate %: cache_miss/(cache_hits+cache_miss). If this is used
|
|
as just -R then this info just goes to output line. With '-R -f' these
|
|
go as performance data. You can also specify values for this parameter,
|
|
these are interprted as WARNING and CRITICAL thresholds (separated by ',').
|
|
The format for WARN and CRIT is same as what you would use in -w and -c.
|
|
-U, --utilization=[WARN,CRIT]
|
|
This calculates percent of space in use, which is bytes/limit_maxbytes
|
|
In some other places this is called size, but since this plugin can
|
|
actually get objects of different size, utilization is more appropriate.
|
|
If you specify -U by itself, the plugin will just output this info,
|
|
with '-f' it will also include it in performance data. You can also specify
|
|
parameter value which are interpreted as WARNING and CRITICAL thresholds.
|
|
|
|
EOT
|
|
|
|
if (defined($nlib) && $nlib->{'enable_long_options'} == 1) {
|
|
my $long_opt_help = $nlib->additional_options_help();
|
|
if ($long_opt_help) {
|
|
print "Stats Variable Options (this is alternative to specifying them as list with -a):\n";
|
|
print $long_opt_help;
|
|
print "\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
############################ START OF THE LIBRARY FUNCTIONS #####################################
|
|
#
|
|
# THIS IS WORK IN PROGRESS, THE LIBRARY HAS NOT BEEN RELEASED YET AND INTERFACES MAY CHANGE
|
|
#
|
|
# ====================================== SUMMARY ================================================
|
|
#
|
|
# Name : Naglio Perl Library For Developing Nagios Plugins
|
|
# Version : 0.2
|
|
# Date : Aug 28, 2012
|
|
# Author : William Leibzon - william@leibzon.org
|
|
# Licence : LGPL - full text at http://www.fsf.org/licenses/lgpl.txt
|
|
#
|
|
# ============================= LIBRARY HISTORY AND VERSIONS ====================================
|
|
#
|
|
# Note: you may safely skip this section if you're looking at documentation about this library or plugin
|
|
#
|
|
# [2006-2008] The history of this library goes back to plugins such as check_snmp_temperature.pl,
|
|
# check_mysqld,pl and others released as early as 2006 with common functions to
|
|
# support prefixes "<,>,=,!" for specifying thresholds and checking data against
|
|
# these thresholds. Several of my plugins had common architecture supporting multiple
|
|
# variables or attributes to be checked using -a/--attributes/--variables option and
|
|
# --warn and --crit options with list of thresholds for these attributes and --perfvars
|
|
# specifying variables whose data would only go as PERFOUT for graphing.
|
|
#
|
|
# [2008-2011] Threshold parsing and check code had been rewritten and support added for specifying
|
|
# range per plugin guidelines: http://nagiosplug.sourceforge.net/developer-guidelines.html
|
|
# Internal structures had been changing and becoming more complex to various cases.
|
|
# In 2010-2012 plugins started to get support for ;warn;crit output of thresholds in perf,
|
|
# as specified in the guidelines.
|
|
#
|
|
# [Early 2012] Code from check_memcached had been used as a base for check_memcached and then
|
|
# check_redis plugins with some of the latest threshold code from check_netstat
|
|
# with more updates. Starting with check_redis the code from check_options() and
|
|
# from main part of plugin that was very similar across my plugins were separated
|
|
# into their own functions. KNOWN_STATS_VARS array was introduced as well to be
|
|
# able to properly add UOM symbol ('c', '%', 's', 'ms', 'B', 'KB') to perfout.
|
|
# check_memcached and check_redis also included support for calculating rate of
|
|
# variables in a similar way to how its been done in check_snmp_netint
|
|
#
|
|
# [0.1 - July 17, 2012] In 0.6 release of check_redis.pl support had been added for long options
|
|
# with special threshold line syntax:
|
|
# --option=WARN:threshold,CRIT:threshold,ABSENT:OK|WARNING|CRITICAL|UNKNOWN,DISPLAY:YES|NO,PERF:YES|NO
|
|
# This was extension from just doing --option=WARN,CRIT to have a more universal
|
|
# and extendable way to specify and alike parameters for checking. check_redis 0.6
|
|
# also introduced support automatically adding long options with above syntax based
|
|
# on description in KNOWN_STATS_VARS. The functions for the library were all separated
|
|
# into their own section of the code. When inported to check_memcached global variables
|
|
# were added to that section and accessor functions written for some of them.
|
|
# This is considered 0.1 version of the library
|
|
#
|
|
# [0.2 - Aug 28, 2012] In August the library code in check_memcached had been re-written from
|
|
# just functions to object-oriented perl interface. All variables were hidden from
|
|
# direct access with accessor functions written. Documentation header had been added
|
|
# to each library function and the header for the library itself. This was major work
|
|
# taking over a week to do although functions and mainly sllllame as in 0.1. They are
|
|
# not stabilized and so library is only to be included within plugins. Support was
|
|
# also added for regex matching with PATTERN option spec. Also added NAME spec.
|
|
# License changed to LGPL from GPL for this code.
|
|
# [0.21 - Sep 3, 2012] Fix bug in handling absent data
|
|
# [0.22 - Mar 23, 2013] Fix bug in parse_threshold functon
|
|
#
|
|
# ================================== LIBRARY TODO =================================================
|
|
#
|
|
# (a) Add library function to support '--extra-opts' to read plugin options from a file
|
|
# This is being to be compatible with http://nagiosplugins.org/extra-opts
|
|
# (b) Support regex matching and allowing multiple data for same threshold definition.
|
|
# [DONE]
|
|
# (c) Support for expressions in places of numeric values for thresholds. The idea is to allow
|
|
# to refer to another variable or to special macro. I know at least one person has extended
|
|
# my check_mysqld to support using mysql variables (not same as status data) for thresholds.
|
|
# I also previouslyhad planned such support with experimental check_snmp_attributes plugin
|
|
# library/base. The idea was also floated around on nagios-devel list.
|
|
# (d) Support specifying variables as expressions. This is straight out of check_snmp_atributes
|
|
# and maybe part of it can be reused for this
|
|
# (e) Add common SNMP functions into library as so many of my plugins use it#
|
|
# (f) Add more functions to make this library easier to use and stabilize its interfaces.
|
|
# Port my plugins to this library.
|
|
# (f) Add support for functions in Nagios-Plugins perl library. While its interfaces are
|
|
# different, I believe, it'd be possible to add "shim" code to support them too.
|
|
# (h) Write proper Perl-style documentation as well as web documentation (much of above maybe
|
|
# moved to web documentation) and move library to separate GITHUB project. Release it.
|
|
# (i) Port this library to Python and write one or two example plugins
|
|
#
|
|
# ================================================================================================
|
|
{
|
|
package Naglio;
|
|
use fields qw();
|
|
use Text::ParseWords;
|
|
|
|
my %ERRORS = ('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4);
|
|
my $DEFAULT_PERF_OK_STATUS_REGEX = 'GAUGE|COUNTER|^DATA$|BOOLEAN';
|
|
|
|
# @DESCRIPTION : Library object constructor
|
|
# @LAST CHANGED : 08-27-12 by WL
|
|
# @INPUT : Hash array of named config settings. All parameters are optiona. Currently supported are:
|
|
# plugin_name => string - short name of the plugin
|
|
# plugin_description => string - plugin longer description
|
|
# plugin_authors => string - list of plugin authors
|
|
# knownStatsVars => reference to hash - hash array defining known variables, what type they are, their description
|
|
# usage_function => &ref - function that would display helpful text in case of error with options for this plugin
|
|
# verbose => 1 or "" or "filename" - set to 1 or "" if verbose/debug or to filename to send data to (may not be called "0" or "1")
|
|
# output_comparison_symbols => 0 or 1 - 1 means library output in case threshold is met can use "<", ">", "="
|
|
# 0 means output is something like "less than or equal", "more than", etc.
|
|
# all_variables_perf => 0 or 1 - 1 means data for all variables would go to PERF. This is what '-A *' or just -A do
|
|
# enable_long_options => 0 or 1 - 1 enables long options generated based on knownStatsVars. This is automatically enabled (from 0
|
|
# to 1) when plugin references additional_options_list() unless this is set to -1 at library init
|
|
# enable_rate_of_change => 0 or 1 - enables support for calculating rate of change based on previously saved data, default is 1
|
|
# enable_regex_match => 0 or 1 - when set to 1 each threshold-specified var name is treated as regex and can match
|
|
# to multiple collected data. this can also be enabled per-variable with PATTERN spec
|
|
# @RETURNS : Reference representing object instance of this library
|
|
# @PRIVACY & USE : PUBLIC, To be used when initializing the library
|
|
sub lib_init {
|
|
my $invocant = shift;
|
|
my $class = ref($invocant) || $invocant;
|
|
my %other_args = @_;
|
|
|
|
# These used to be global variables, now these are object local variables in self with accessor
|
|
my @allVars = (); # all variables after options processing
|
|
my @perfVars = (); # performance variables list [renamed from @o_perfVarsL in earlier code]
|
|
my %thresholds=(); # hash array of thresholds for above variables, [this replaced @o_warnL and @o_critL in earlier code]
|
|
my %dataresults= (); # This is where data is loaded. It is a hash with variable names as keys and array array for value:
|
|
# $dataresults{$var}[0] - undef of value of this variable
|
|
# $dataresults{$var}[1] - 0 if variable not printed out to status line yet, 1 or more otherwise
|
|
# $dataresults{$var}[2] - 0 if variable data not yet put into PERF output, -1 if PERF output is preset, 1 after output
|
|
# $dataresults{$var}[3] - string, '' to start with, holds ready performance data output for this variable
|
|
# $dataresults{$var}[4] - only for regex matches. name of match var (which should be key in thresholds), otherwise undef
|
|
my %dataVars = (); # keys are variables from allVars and perfVars, values is array of data that matched i.e. keys in dataresults
|
|
my @ar_warnLv = (); # used during options processing
|
|
my @ar_critLv = (); # used during options processing
|
|
my @ar_varsL= (); # used during options processing
|
|
my @prev_time= (); # timestamps if more then one set of previois performance data
|
|
|
|
my $self = { # library and nagios versions
|
|
_NaglioLibraryVersion => 0.2, # this library's version
|
|
_NagiosVersion => 3, # assume nagios core 3.x unless known otherwise
|
|
# library internal data structures
|
|
_allVars => \@allVars,
|
|
_perfVars => \@perfVars,
|
|
_thresholds => \%thresholds,
|
|
_dataresults => \%dataresults,
|
|
_datavars => \%dataVars,
|
|
_ar_warnLv => \@ar_warnLv,
|
|
_ar_critLv => \@ar_critLv,
|
|
_ar_varsL => \@ar_varsL,
|
|
_prevTime => \@prev_time,
|
|
_prevPerf => {}, # array that is populated with previous performance data
|
|
_checkTime => undef, # time when data was last checked
|
|
_statuscode => "OK", # final status code
|
|
_statusinfo => "", # if there is an error, this has human info about what it is
|
|
_statusdata => "", # if there is no error but we want some data in status line, this var gets it
|
|
_perfdata => "", # this variable collects performance data line
|
|
_saveddata => "", # collects saved data (for next plugin re-run, not implimented yet)
|
|
_init_args => \%other_args,
|
|
# copy of data from plugin option variables
|
|
o_variables => undef, # List of variables for warn and critical checks
|
|
o_crit => undef, # Comma-separated list of critical thresholds for each checked variable
|
|
o_warn => undef, # Comma-separated list of warning thresholds for each checked variable
|
|
o_perf => undef, # defined or undef. perf option means all data from variables also goes as PERFDATA
|
|
o_perfvars => undef, # List of variables only for PERFDATA
|
|
o_prevperf => undef, # previously saved performance data coming from $SERVICEPERFDATA$ macro
|
|
# library special input variables (similar to options)
|
|
o_rprefix => '', # prefix used to distinguish rate variables
|
|
o_rsuffix => '_rate', # suffix used to distinguish rate variables
|
|
knownStatusVars => {}, # Special HASH ARRAY with names and description of known variables
|
|
perfOKStatusRegex => $DEFAULT_PERF_OK_STATUS_REGEX,
|
|
verbose => 0, # verbose, same as debug, same as o_verb
|
|
plugin_name => '', # next 3 parameters are variables are currently not used
|
|
plugin_description => '', # but its still better if these are provided
|
|
plugin_authors => '', # in the future these maybe used for help & usage functions
|
|
# library setting variables
|
|
debug_file => "", # instead of setting file name in verbose, can also set it here
|
|
output_comparison_symbols => 1, # should plugin output >,<.=,! for threshold match
|
|
# if 0, it will say it in human form, i.e. "less"
|
|
all_variables_perf => 0, # should we all variables go to PERF (even those not listed in o_variables and o_perfvars)
|
|
# this is the option set to 1 when --perfvars '*' is used
|
|
enable_long_options => 0, # enable support for long options generated based on knownStatusVars description
|
|
enable_rate_of_change => 1, # enables support for calculatin rate of chane and for rate of change long options
|
|
enable_regex_match => 0, # 0 is not enabled, 1 means variables in o_variables and o_perfvars are considered regex to match actual data
|
|
# a value of 2 means its enabled, but for options with PATTERN specifier (this is not configurale value)
|
|
};
|
|
|
|
# bless to create an object
|
|
bless $self, $class;
|
|
|
|
# deal with arguments that maybe passed to library when initalizing
|
|
if (exists($other_args{'KNOWN_STATUS_VARS'})) {
|
|
$self->{'knownStatusVars'} = $other_args{'KNOWN_STATUS_VARS'};
|
|
}
|
|
$self->{'plugin_name'} = $other_args{'plugin_name'} if exists($other_args{'plugin_name'});
|
|
$self->{'plugin_description'} = $other_args{'plugin_description'} if exists($other_args{'plugin_description'});
|
|
$self->{'plugin_authors'} = $other_args{'plugin_authors'} if exists($other_args{'plugin_authors'});
|
|
$self->{'usage_function'} = $other_args{'usage_gunction'} if exists($other_args{'usage_function'});
|
|
$self->configure(%other_args);
|
|
|
|
# return self object
|
|
return $self;
|
|
}
|
|
|
|
# This is just an alias for object constructor lib_init function
|
|
sub new {
|
|
return lib_init(@_);
|
|
}
|
|
|
|
# @DESCRIPTION : Allows to confiure some settings after initialization (all these can also be done as part of lib_init)
|
|
# @LAST CHANGED : 08-27-12 by WL
|
|
# @INPUT : Hash array of named config settings. All parameters are optiona. Currently supported are:
|
|
# verbose => 1 or "" or "filename" - set to 1 or "" if verbose/debug or to filename to send data to (may not be called "0" or "1")
|
|
# output_comparison_symbols => 0 or 1 - 1 means library output in case threshold is met can use "<", ">", "="
|
|
# 0 means output is something like "less than or equal", "more than", etc.
|
|
# all_variables_perf => 0 or 1 - 1 means data for all variables would go to PERF. This is what '-A *' or just -A do
|
|
# enable_long_options => 0 or 1 - 1 enables long options generated based on knownStatsVars. This is automatically enabled (from 0
|
|
# to 1) when plugin references additional_options_list() unless this is set to -1 at library init
|
|
# enable_rate_of_change => 0 or 1 - enables support for calculating rate of change based on previously saved data, default is 1
|
|
# enable_regex_match => 0 or 1 - when set to 1 each threshold-specified var name is treated as regex and can match
|
|
# to multiple collected data. this can also be enabled per-variable with PATTERN spec
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, Must be used as an object instance function.
|
|
sub configure {
|
|
my $self = shift;
|
|
my %args = @_;
|
|
|
|
if (exists($args{'verbose'}) || exists($args{'debug'})) {
|
|
$self->{'verbose'} = 1;
|
|
if (exists($args{'verbose'}) && $args{'verbose'}) {
|
|
$self->{'debug_file'} = $args{'verbose'};
|
|
}
|
|
if (exists($args{'debug_log_filename'})) {
|
|
$self->{'debug_file'} = $args{'debug_log_filename'};
|
|
}
|
|
}
|
|
$self->{'all_variables_perf'} = $args{'all_variables_perf'} if exists($args{'all_variables_perf'});
|
|
$self->{'enable_long_options'} = $args{'enable_long_options'} if exists($args{'enable_long_options'});
|
|
$self->{'enable_rate_of_change'} = $args{'enable_rate_of_change'} if exists($args{'enable_rate_of_change'});
|
|
$self->{'enable_regex_match'} = 1 if exists($args{'enable_regex_match'}) && $args{'enable_regex_match'}!=0;
|
|
$self->{'output_comparison_symbols'} = $args{'output_comparison_symbols'} if exists($args{'output_comparison_symbols'});
|
|
}
|
|
|
|
# @DESCRIPTION : Allows functions to take be used both directly and as object referenced functions
|
|
# In the 2nd case they get $self as 1st argument, in 1st they don't. this just adds
|
|
# $self if its if its not there so their argument list is known.
|
|
# Functions that allow both should still check if $self is defined
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : arbitrary list of arguments
|
|
# @RETURNS : arbitrary list of arguments with 1st being object hash or undef
|
|
# @PRIVACY & USE : PRIVATE
|
|
sub _self_args {
|
|
return @_ if ref($_[0]) && exists($_[0]->{'_NaglioLibraryVersion'});
|
|
unshift @_,undef;
|
|
return @_;
|
|
}
|
|
|
|
# @DESCRIPTION : Sets function to be called to display help text on using plugin in case of error
|
|
# @LAST CHANGED : 08-22-12 by WL
|
|
# @INPUT : reference to usage function
|
|
# @RETURNS : nothing
|
|
# @PRIVACY & USE : PUBLIC, Must be used as an object instance function :
|
|
sub set_usage_function {
|
|
my ($self, $usage_function) = @_;
|
|
$self->{'usage_function'} = $usage_function;
|
|
}
|
|
|
|
# @DESCRIPTION : Usage function. For right now it just calls usage function given as a parameter
|
|
# In the future if it is not available, it'll print something standard.
|
|
# @LAST CHANGED : 08-22-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : nothing
|
|
# @PRIVACY & USE : PUBLIC, But primary for internal use. Must be used as an object instance function.
|
|
sub usage {
|
|
my $self = shift;
|
|
if (defined($self) && defined($self->{'usage_function'})) { &{$self->{'usage_function'}}(); }
|
|
}
|
|
|
|
# @DESCRIPTION : This function converts uptime in seconds to nice & short output format
|
|
# @LAST_CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - uptime in seconds
|
|
# @RETURNS : string of uptime for human consumption
|
|
# @PRIVACY & USE : PUBLIC, Maybe used directly or as object instance function :
|
|
sub uptime_info {
|
|
my ($self,$uptime_seconds) = _self_args(@_);
|
|
my $upinfo = "";
|
|
my ($secs,$mins,$hrs,$days) = (undef,undef,undef,undef);
|
|
|
|
sub div_mod { return int( $_[0]/$_[1]) , ($_[0] % $_[1]); }
|
|
|
|
($mins,$secs) = div_mod($uptime_seconds,60);
|
|
($hrs,$mins) = div_mod($mins,60);
|
|
($days,$hrs) = div_mod($hrs,24);
|
|
$upinfo .= "$days days" if $days>0;
|
|
$upinfo .= (($upinfo ne '')?' ':'').$hrs." hours" if $hrs>0;
|
|
$upinfo .= (($upinfo ne '')?' ':'').$mins." minutes" if $mins>0 && ($days==0 || $hrs==0);
|
|
$upinfo .= (($upinfo ne '')?' ':'').$secs." seconds" if $secs>0 && $days==0 && $hrs==0;
|
|
return $upinfo;
|
|
}
|
|
|
|
# @DESCRIPTION : If debug / verbose option is set, function prints its input out or to debug file
|
|
# @LAST_CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - string of debug text
|
|
# @RETURNS : nothing
|
|
# @PRIVACY & USE : PUBLIC, Maybe used directly or as object instance function
|
|
sub verb {
|
|
my ($self,$in) = _self_args(@_);
|
|
my $debug_file_name = "";
|
|
|
|
if (defined($o_verb) || (defined($self) && defined($self->{'verbose'}) && $self->{'verbose'} ne 0)) {
|
|
$debug_file_name = $self->{'debug_file'} if defined($self) && $self->{'debug_file'} ne "";
|
|
$debug_file_name = $self->{'verbose'} if $debug_file_name ne "" && defined($self) &&
|
|
($self->{'verbose'} ne 0 && $self->{'verbose'} ne 1 && $self->{'verbose'} ne '');
|
|
$debug_file_name = $o_verb if $debug_file_name ne "" && defined($o_verb) && $o_verb ne "";
|
|
if ($debug_file_name ne "") {
|
|
if (!open (DEBUGFILE, ">>$debug_file_name")) {
|
|
print $in, "\n";
|
|
}
|
|
else {
|
|
print DEBUGFILE $in,"\n";
|
|
close DEBUGFILE;
|
|
}
|
|
}
|
|
else {
|
|
print $in, "\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
# @DESCRIPTION : Check of string is a a number supporting integers, negative, decimal floats
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - string of text to be checked
|
|
# @RETURNS : 1 if its a number, 0 if its not a number
|
|
# @PRIVACY & USE : PUBLIC, To be used statically and not as an object instance reference
|
|
sub isnum {
|
|
my $num = shift;
|
|
if (defined($num) && $num =~ /^[-|+]?((\d+\.?\d*)|(^\.\d+))$/ ) { return 1 ;}
|
|
return 0;
|
|
}
|
|
|
|
# @DESCRIPTION : Check of string is a a number supporting integers, negative, decimal floats
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - string of text to be checked
|
|
# @RETURNS : 1 if its a number, 0 if its not a number
|
|
# @PRIVACY & USE : PUBLIC, To be used statically and not as an object instance function
|
|
sub trim {
|
|
my $string = shift;
|
|
$string =~ s/^\s+//;
|
|
$string =~ s/\s+$//;
|
|
return $string;
|
|
}
|
|
|
|
# @DESCRIPTION : Takes as input string from PERF or SAVED data from previous plugin invocation
|
|
# which should contain space-separated list of var=data pairs. The string is
|
|
# parsed and it returns back hash array of var=>data pairs.
|
|
# - Function written in 2007 for check_snmp_netint, first release 06/01/07
|
|
# - Modified to use quotewords as suggested by Nicholas Scott, release of 05/20/12
|
|
# @LAST CHANGED : 08-27-12 by WL
|
|
# @INPUT : ARG1 - string of text passed from SERVICEPERFDATA OR SERVICESAVEDDATA MACRO
|
|
# @RETURNS : hash array (see description)
|
|
# @PRIVACY & USE : PUBLIC, Maybe used directly or as object instance function
|
|
# TODO: double-check this works when there are no single quotes as check_snmp_netint always did quotes
|
|
sub process_perf {
|
|
my ($self,$in) = _self_args(@_);
|
|
my %pdh;
|
|
my ($nm,$dt);
|
|
use Text::ParseWords;
|
|
foreach (quotewords('\s+',1,$in)) {
|
|
if (/(.*)=(.*)/) {
|
|
($nm,$dt)=($1,$2);
|
|
if (defined($self)) { $self->verb("prev_perf: $nm = $dt"); }
|
|
else { verb("prev_perf: $nm = $dt"); }
|
|
# in some of my plugins time_ is to profile execution time for part of plugin
|
|
# $pdh{$nm}=$dt if $nm !~ /^time_/;
|
|
$pdh{$nm}=$dt;
|
|
$pdh{$nm}=$1 if $dt =~ /(\d+)[csB%]/; # 'c' or 's' or B or % maybe have been added
|
|
# support for more than one set of previously cached performance data
|
|
# push @prev_time,$1 if $nm =~ /.*\.(\d+)/ && (!defined($prev_time[0]) || $prev_time[0] ne $1);
|
|
}
|
|
}
|
|
return %pdh;
|
|
}
|
|
|
|
# @DESCRIPTION : Converts variables with white-spaces with per-name enclosed with ''
|
|
# @LAST CHANGED : 08-24-12 by WL
|
|
# @INPUT : ARG1 - varible name
|
|
# @RETURNS : name for perf-out output
|
|
# @PRIVACY & USE : PUBLIC, but its use should be limited. To be used statically and not as an object instance function
|
|
sub perf_name {
|
|
my $in = shift;
|
|
my $out = $in;
|
|
$out =~ s/'\/\(\)/_/g; #' get rid of special characters in performance description name
|
|
if ($in !~ /\s/ && $in eq $out) {
|
|
return $in;
|
|
}
|
|
return "'".$out."'";
|
|
}
|
|
|
|
# @DESCRIPTION : Determines appropriate output name (for STATUS and PERF) taking into account
|
|
# rate variales prefix/suffix and 'NAME' override in long thresholds line specification
|
|
# @LAST CHANGED : 08-26-12 by WL
|
|
# @INPUT : ARG1 - variable name (variable as found in dataresults)
|
|
# @RETURNS : name for output
|
|
# @PRIVACY & USE : PUBLIC, but its use should be limited. To be as an object instance function,
|
|
sub out_name {
|
|
my ($self,$dname) = @_;
|
|
my $thresholds = $self->{'_thresholds'};
|
|
my $dataresults = $self-> {'_dataresults'};
|
|
my $vr = $self->data2varname($dname,1);
|
|
my $name_out;
|
|
|
|
if (defined($vr) && exists($thresholds->{$vr}{'NAME'})) {
|
|
if (exists($thresholds->{$vr}{'PATTERN'}) || $self->{'enable_regex_match'} == 1) {
|
|
$thresholds->{$vr}{'NAMES_INDEX'} = {} if !exists($thresholds->{$vr}{'NAMES_INDEX'});
|
|
if (!exists($thresholds->{$vr}{'NAMES_INDEX'}{$dname})) {
|
|
my $ncount = scalar(keys %{$thresholds->{$vr}{'NAMES_INDEX'}});
|
|
$ncount++;
|
|
$thresholds->{$vr}{'NAMES_INDEX'}{$dname} = $ncount;
|
|
}
|
|
$name_out = $thresholds->{$vr}{'NAME'} .'_'. $thresholds->{$vr}{'NAMES_INDEX'}{$dname};
|
|
}
|
|
else {
|
|
$name_out = $thresholds->{$vr}{'NAME'};
|
|
}
|
|
}
|
|
else {
|
|
# this is for output of rate variables which name internally start with &
|
|
if ($dname =~ /^&(.*)/) {
|
|
$name_out = $self->{'o_rprefix'}.$1.$self->{'o_rsuffix'};
|
|
}
|
|
else {
|
|
$name_out = $dname;
|
|
}
|
|
}
|
|
return $name_out;
|
|
}
|
|
|
|
# @DESCRIPTION : Builds statusline. Adds info on error conditions that would preceed status data.
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - variable name
|
|
# ARG2 - string argument for status info
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, but its direct use is discouraged. Must be used as an object instance function
|
|
sub addto_statusinfo_output {
|
|
my ($self, $var, $sline) = @_;
|
|
$self->{'_statusinfo'} .= ", " if $self->{'_statusinfo'};
|
|
$self->{'_statusinfo'} .= trim($sline);
|
|
$self->{'_dataresults'}{$var}[1]++;
|
|
}
|
|
|
|
# @DESCRIPTION : Accessor function for statusinfo
|
|
# @LAST CHANGED : 08-22-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : statusinfo (error conditions and messages) string
|
|
# @PRIVACY & USE : PUBLIC. Must be used as an object instance function
|
|
sub statusinfo {
|
|
my $self = shift;
|
|
if (defined($self) && defined($self->{'_statusinfo'})) {
|
|
return $self->{'_statusinfo'};
|
|
}
|
|
return undef;
|
|
}
|
|
|
|
# @DESCRIPTION : Builds Statuline. Adds variable data for status line output in non-error condition.
|
|
# @LAST CHANGED : 08-26-12 by WL
|
|
# @INPUT : ARG1 - variable name
|
|
# ARG2 - formatted for human consumption text of collected data for this variable
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, but its direct use is discouraged. Must be used as an object instance function
|
|
sub addto_statusdata_output {
|
|
my ($self,$dvar,$data) = @_;
|
|
my $thresholds = $self->{'_thresholds'};
|
|
my $dataresults = $self -> {'_dataresults'};
|
|
my $avar = $self->data2varname($dvar,1);
|
|
|
|
# $self->verb("debug: addto_statusdata_output - dvar is $dvar and avar is $avar");
|
|
if ((!exists($thresholds->{$avar}{'DISPLAY'}) || $thresholds->{$avar}{'DISPLAY'} eq 'YES') &&
|
|
(!exists($dataresults->{$dvar}[1]) || $dataresults->{$dvar}[1] == 0)) {
|
|
$self->{'_statusdata'} .= ", " if $self->{'_statusdata'};
|
|
if (defined($data)) {
|
|
$self->{'_statusdata'} .= trim($data);
|
|
}
|
|
elsif (exists($dataresults->{$dvar}[0])) {
|
|
$self->{'_statusdata'} .= $self->out_name($dvar) ." is ".$dataresults->{$dvar}[0];
|
|
}
|
|
$dataresults->{$dvar}[1]++;
|
|
}
|
|
}
|
|
|
|
# @DESCRIPTION : Accessor function for statusdata
|
|
# @LAST CHANGED : 08-22-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : statusdata string (non-error data from some variables)
|
|
# @PRIVACY & USE : PUBLIC. Must be used as an object instance function
|
|
sub statusdata {
|
|
my $self = shift;
|
|
if (defined($self) && defined($self->{'_statusdata'})) {
|
|
return $self->{'_statusdata'};
|
|
}
|
|
return undef;
|
|
}
|
|
|
|
# @DESCRIPTION : This function sets text or data for data variable PERFORMANCE output
|
|
# (;warn;crit would be added to it later if thresholds were set for this variable)
|
|
# @LAST CHANGED : 08-26-12 by WL
|
|
# @INPUT : ARG1 - variable name
|
|
# ARG2 - either "var=data" text or just "data" (in which case var= is prepended to it)
|
|
# ARG3 - UOM symol ('c' for continous, '%' for percent, 's' for seconds) to added after data
|
|
# if undef then it is looked up in known variables and if one is present there, its used
|
|
# ARG4 - one of: "REPLACE" - if existing preset perfdata is present, it would be replaced with ARG2
|
|
# "ADD" - if existing preset perfdata is there, ARG2 string would be added to it (DEFAULT)
|
|
# "IFNOTSET - only set perfdata to ARG2 if it is empty, otherwise keep existing
|
|
# @RETURNS : nothing (future: 0 on success, -1 on error)
|
|
# @PRIVACY & USE : PUBLIC, but its use should be limited to custom variables added by plugins to data
|
|
# Must be used as an object instance function
|
|
sub set_perfdata {
|
|
my ($self,$avar,$adata,$unit,$opt) = @_;
|
|
my $dataresults = $self->{'_dataresults'};
|
|
my $thresholds = $self->{'_thresholds'};
|
|
my $known_vars = $self->{'knownStatusVars'};
|
|
my $bdata = $adata;
|
|
my $vr = undef;
|
|
|
|
# default operation is ADD
|
|
if (!defined($opt)) {
|
|
$opt = "ADD";
|
|
}
|
|
else {
|
|
$opt = uc $opt;
|
|
}
|
|
if (defined($adata)) {
|
|
# if only data wthout "var=" create proper perf line
|
|
$bdata = perf_name($self->out_name($avar)).'='.$adata if $adata !~ /=/;
|
|
if (defined($unit)) {
|
|
$bdata .= $unit;
|
|
}
|
|
else {
|
|
# appending UOM is done here
|
|
$vr = $self->data2varname($avar,1);
|
|
if (defined($vr)) {
|
|
if (exists($thresholds->{$vr}{'UOM'})) {
|
|
$bdata .= $thresholds->{$vr}{'UOM'};
|
|
}
|
|
elsif (exists($known_vars->{$vr}[2])) {
|
|
$bdata .= $known_vars->{$vr}[2];
|
|
}
|
|
}
|
|
}
|
|
# preset perfdata in dataresults array
|
|
$dataresults->{$avar}=[undef,0,0,''] if !defined($dataresults->{$avar});
|
|
$dataresults->{$avar}[2]=-1;
|
|
if ($opt eq "REPLACE" || !exists($dataresults->{$avar}[3]) || $dataresults->{$avar}[3] eq '') {
|
|
$dataresults->{$avar}[3]=$bdata;
|
|
}
|
|
elsif (exists($dataresults->{$avar}[3]) && $dataresults->{$avar}[3] ne '' && $opt eq "ADD") {
|
|
$dataresults->{$avar}[3].=$adata;
|
|
}
|
|
}
|
|
}
|
|
|
|
# @DESCRIPTION : This function is used when building performance output
|
|
# @LAST CHANGED : 08-26-12 by WL
|
|
# @INPUT : ARG1 - variable name
|
|
# ARG2 - optional data argument, if not present variable's dataresults are used
|
|
# ARG3 - one of: "REPLACE" - if existing preset perfdata is present, it would be replaced with ARG2
|
|
# "ADD" - if existing preset perfdata is there, ARG2 string would be added to it
|
|
# "IFNOTSET - only set perfdata to ARG2 if it is empty, otherwise keep existing (DEFAULT)
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, but its direct use is discouraged. Must be used as an object instance function
|
|
sub addto_perfdata_output {
|
|
my ($self,$avar,$adata, $opt) = @_;
|
|
my $thresholds = $self->{'_thresholds'};
|
|
my $dataresults = $self-> {'_dataresults'};
|
|
my $vr = undef;
|
|
|
|
if (!defined($opt)) {
|
|
$opt = "IFNOTSET";
|
|
}
|
|
else {
|
|
$opt = uc $opt;
|
|
}
|
|
$vr = $self->data2varname($avar,1);
|
|
if (defined($avar) && defined($vr) &&
|
|
(!exists($thresholds->{$vr}{'PERF'}) || $thresholds->{$vr}{'PERF'} eq 'YES') &&
|
|
(!defined($dataresults->{$avar}[2]) || $dataresults->{$avar}[2] < 1)) {
|
|
my $bdata = '';
|
|
if (defined($adata)) {
|
|
$bdata .= trim($adata);
|
|
}
|
|
# this is how most perfdata gets added
|
|
elsif (defined($dataresults->{$avar}[0])) {
|
|
$bdata .= perf_name($self->out_name($avar)) .'='. $dataresults->{$avar}[0];
|
|
}
|
|
# this would use existing preset data now if it was present due to default
|
|
# setting UOM from KNOWN_STATUS_VARS array is now in set_perfdata if 3rd arg is undef
|
|
$self->set_perfdata($avar,$bdata,undef,$opt);
|
|
# now we actually add to perfdata from [3] of dataresults
|
|
if (exists($dataresults->{$avar}[3]) && $dataresults->{$avar}[3] ne '') {
|
|
$bdata = trim($dataresults->{$avar}[3]);
|
|
$self->{'_perfdata'} .= " " if $self->{'_perfdata'};
|
|
$self->{'_perfdata'} .= $bdata;
|
|
$dataresults->{$avar}[2]=0 if $dataresults->{$avar}[2] < 0;
|
|
$dataresults->{$avar}[2]++;
|
|
}
|
|
}
|
|
}
|
|
|
|
# @DESCRIPTION : Accessor function for map from data collected to variable names specified in options and thresholds
|
|
# @LAST CHANGED : 08-22-13 by WL
|
|
# @INPUT : ARG1 - data variable name
|
|
# ARG2 - if undef or 0 return undef if no match for ARG1 found, if 1 return ARG1
|
|
# @RETURNS : string of variable name as was specified with --variables or --thresholds
|
|
# @PRIVACY & USE : PUBLIC. Must be used as an object instance function
|
|
sub data2varname {
|
|
my ($self,$dname,$ropt) = @_;
|
|
my $dataresults = $self->{'_dataresults'};
|
|
|
|
return $dataresults->{$dname}[4] if defined($self) && defined($dataresults->{$dname}[4]);
|
|
return $dname if defined($ropt) && $ropt eq 1;
|
|
return undef;
|
|
}
|
|
|
|
# @DESCRIPTION : Sets list and info on known variables and regex for acceptable data types.
|
|
# This function maybe called more than once. If called again, new vars in subsequent
|
|
# calls are added to existing ones and existing vars are replaced if they are there again.
|
|
# @LAST CHANGED : 08-22-12 by WL
|
|
# @INPUT : ARG1 - ref to hash array of known vars. Keys are variable names. Data is an array. Example is:
|
|
# 'version' => [ 'misc', 'VERSION', '' ],
|
|
# 'utilization' => [ 'misc', 'GAUGE', '%' ],
|
|
# 'cmd_get' => [ 'misc', 'COUNTER', 'c', "Total Number of Get Commands from Start" ],
|
|
# The array elements are:
|
|
# 1st - string of source for this variable. not used by the library at all, but maybe used by code getting the data
|
|
# 2nd - type of data in a variable. May be "GAUGE", "VERSION", "COUNTER", "BOOLEAN", "TEXTINFO", "TEXTDATA", "SETTING"
|
|
# 3rd - either empty or one-character UOM to be added to perforance data - 'c' for continous, '%' percent, 's' seconds
|
|
# 4th - either empty or a description of this variable. If not empty, the variable becomes long-option and this is help text
|
|
# ARG2 - regex of acceptable types of data for performance output. Anything else is ignored (i.e. no no output to perf), but
|
|
# is still available for threshold checks. if this is undef, then default of 'GAUGE|COUNTER|^DATA$|BOOLEAN' is used
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, Must be used as object instance function
|
|
sub set_knownvars {
|
|
my ($self, $known_vars_in, $vartypes_regex_in) = @_;
|
|
my $known_vars = $self->{'knownStatusVars'};
|
|
|
|
if (defined($known_vars_in)) {
|
|
foreach (keys %{$known_vars_in}) {
|
|
$known_vars->{$_} = $known_vars_in->{$_};
|
|
}
|
|
}
|
|
if (defined($vartypes_regex_in)) {
|
|
$self->{'perfOKStatusRegex'} = $vartypes_regex_in;
|
|
}
|
|
else {
|
|
$self->{'perfOKStatusRegex'} = $DEFAULT_PERF_OK_STATUS_REGEX;
|
|
}
|
|
}
|
|
|
|
# @DESCRIPTION : Adds known variables definition one at a time
|
|
# @LAST CHANGED : 08-22-12 by WL
|
|
# @INPUT : ARG1 - variable name
|
|
# ARG2 - string of source for this variable. not used by the library at all, but maybe used by code getting the data
|
|
# ARG3 - type of data in a variable. May be "GAUGE", "VERSION", "COUNTER", "BOOLEAN", "TEXTINFO", "TEXTDATA", "SETTING"
|
|
# ARG4 - either empty or one-character UOM symbol to be added to perforance data - 'c' for continous, '%' percent, 's' seconds
|
|
# ARG5 - either empty or a description of this variable. If not empty, the variable becomes long-option and this is help text
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, Must be used as object instance function
|
|
sub add_knownvar {
|
|
my ($self, $varname, $source, $type, $unit, $description) = @_;
|
|
my $temp = { $varname => [ $source, $type, $unit, $description] };
|
|
$self->set_knownvars($temp,undef);
|
|
}
|
|
|
|
# @DESCRIPTION : This function is used for checking data values against critical and warning thresholds
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - variable name (used for text output in case it falls within threshold)
|
|
# ARG2 - data to be checked
|
|
# ARG3 - threshold to be checked, internal structure returned by parse_threshold()
|
|
# @RETURNS : Returns "" (empty string) if data is not within threshold range
|
|
# and text message for status line out about how data is within range otherwise
|
|
# @PRIVACY & USE : PUBLIC. Maybe used directly or as an object instance function
|
|
sub check_threshold {
|
|
my ($self,$attrib,$data,$th_array) = _self_args(@_);
|
|
my $mod = $th_array->[0];
|
|
my $lv1 = $th_array->[1];
|
|
my $lv2 = $th_array->[2];
|
|
my $issymb = 1;
|
|
$issymb = 0 if defined($self) && $self->{'output_comparison_symbols'} eq 0;
|
|
|
|
# verb("debug check_threshold: $mod : ".(defined($lv1)?$lv1:'')." : ".(defined($lv2)?$lv2:''));
|
|
return "" if !defined($lv1) || ($mod eq '' && $lv1 eq '');
|
|
return " " . $attrib . " is " . $data . ( ($issymb==1)?' = ':' equal to ' ). $lv1 if $mod eq '=' && $data eq $lv1;
|
|
return " " . $attrib . " is " . $data . ( ($issymb==1)?' != ':' not equal to ' ). $lv1 if $mod eq '!' && $data ne $lv1;
|
|
return " " . $attrib . " is " . $data . ( ($issymb==1)?' > ':' more than ' ) . $lv1 if $mod eq '>' && $data>$lv1;
|
|
return " " . $attrib . " is " . $data . ( ($issymb==1)?' > ':' more than ' ) . $lv2 if $mod eq ':' && $data>$lv2;
|
|
return " " . $attrib . " is " . $data . ( ($issymb==1)?' >= ':' more than or equal to ' ) . $lv1 if $mod eq '>=' && $data>=$lv1;
|
|
return " " . $attrib . " is " . $data . ( ($issymb==1)?' < ':' less than ' ). $lv1 if ($mod eq '<' || $mod eq ':') && $data<$lv1;
|
|
return " " . $attrib . " is " . $data . ( ($issymb==1)?' <= ':' less than or equal to ' ) . $lv1 if $mod eq '<=' && $data<=$lv1;
|
|
return " " . $attrib . " is " . $data . " in range $lv1..$lv2" if $mod eq '@' && $data>=$lv1 && $data<=$lv2;
|
|
return "";
|
|
}
|
|
|
|
# @DESCRIPTION : This function is called to parse threshold string
|
|
# @LAST CHANGED : 03-23-13 by WL
|
|
# (the code in this function can be traced back to late 2006. It has not much changed from 2008)
|
|
# @INPUT : ARG1 - String for one variable WARN or CRIT threshold which can be as follows:
|
|
# data - warn if data is above this value if numeric data, or equal for non-numeric
|
|
# >data - warn if data is above this value (default for numeric values)
|
|
# <data - warn if data is below this value (must be followed by number)
|
|
# =data - warn if data is equal to this value (default for non-numeric values)
|
|
# !data - warn if data is not equal to this value
|
|
# Threshold can also be specified as range in two forms:
|
|
# num1:num2 - warn if data is outside range i.e. if data<num1 or data>num2
|
|
# \@num1:num2 - warn if data is in range i.e. data>=num1 && data<=num2
|
|
# @RETURNS : Returns reference to a hash array, this library's structure for holding processed threshold spec
|
|
# @PRIVACY & USE : PUBLIC. Maybe used directly or as an object instance function
|
|
sub parse_threshold {
|
|
my ($self,$thin) = _self_args(@_);
|
|
|
|
# link to an array that holds processed threshold data
|
|
# array: 1st is type of check, 2nd is threshold value or value1 in range, 3rd is value2 in range,
|
|
# 4th is extra options such as ^, 5th is nagios spec string representation for perf out
|
|
my $th_array = [ '', undef, undef, '', '' ];
|
|
my $th = $thin;
|
|
my $at = '';
|
|
|
|
$at = $1 if $th =~ s/^(\^?[@|>|<|=|!]?~?)//; # check mostly for my own threshold format
|
|
$th_array->[3]='^' if $at =~ s/\^//; # deal with ^ option
|
|
$at =~ s/~//; # ignore ~ if it was entered
|
|
if ($th =~ /^\:([-|+]?\d+\.?\d*)/) { # :number format per nagios spec
|
|
$th_array->[1]=$1;
|
|
$th_array->[0]=($at !~ /@/)?'>':'<=';
|
|
$th_array->[5]=($at !~ /@/)?('~:'.$th_array->[1]):($th_array->[1].':');
|
|
}
|
|
elsif ($th =~ /([-|+]?\d+\.?\d*)\:$/) { # number: format per nagios spec
|
|
$th_array->[1]=$1;
|
|
$th_array->[0]=($at !~ /@/)?'<':'>=';
|
|
$th_array->[5]=($at !~ /@/)?'':'@';
|
|
$th_array->[5].=$th_array->[1].':';
|
|
}
|
|
elsif ($th =~ /([-|+]?\d+\.?\d*)\:([-|+]?\d+\.?\d*)/) { # nagios range format
|
|
$th_array->[1]=$1;
|
|
$th_array->[2]=$2;
|
|
if ($th_array->[1] > $th_array->[2]) {
|
|
print "Incorrect format in '$thin' - in range specification first number must be smaller then 2nd\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
$th_array->[0]=($at !~ /@/)?':':'@';
|
|
$th_array->[5]=($at !~ /@/)?'':'@';
|
|
$th_array->[5].=$th_array->[1].':'.$th_array->[2];
|
|
}
|
|
if (!defined($th_array->[1])) { # my own format (<,>,=,!)
|
|
$th_array->[0] = ($at eq '@')?'<=':$at;
|
|
$th_array->[1] = $th;
|
|
$th_array->[5] = '~:'.$th_array->[1] if ($th_array->[0] eq '>' || $th_array->[0] eq '>=');
|
|
$th_array->[5] = $th_array->[1].':' if ($th_array->[0] eq '<' || $th_array->[0] eq '<=');
|
|
$th_array->[5] = '@'.$th_array->[1].':'.$th_array->[1] if $th_array->[0] eq '=';
|
|
$th_array->[5] = $th_array->[1].':'.$th_array->[1] if $th_array->[0] eq '!';
|
|
}
|
|
if ($th_array->[0] =~ /[>|<]/ && !isnum($th_array->[1])) {
|
|
print "Numeric value required when '>' or '<' are used !\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
# verb("debug parse_threshold: $th_array->[0] and $th_array->[1]");
|
|
$th_array->[0] = '=' if !$th_array->[0] && !isnum($th_array->[1]) && $th_array->[1] ne '';
|
|
if (!$th_array->[0] && isnum($th_array->[1])) { # this is just the number by itself, becomes 0:number check per nagios guidelines
|
|
$th_array->[2]=$th_array->[1];
|
|
$th_array->[1]=0;
|
|
$th_array->[0]=':';
|
|
$th_array->[5]=$th_array->[2];
|
|
}
|
|
return $th_array;
|
|
}
|
|
|
|
# @DESCRIPTION : this function checks that for numeric data warn threshold is within range of critical
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - warhing threshold structure (reference to hash array)
|
|
# ARG2 - critical threshold structure (reference to hash array)
|
|
# @RETURNS : Returns 1 if warning does not fall within critical (there is an error)
|
|
# Returns 0 if everything is ok and warning is within critical
|
|
# @PRIVACY & USE : PUBLIC, but its use is discouraged. Maybe used directly or as an object instance function.
|
|
sub threshold_specok {
|
|
my ($self, $warn_thar,$crit_thar) = _self_args(@_);
|
|
|
|
return 1 if defined($warn_thar) && defined($warn_thar->[1]) &&
|
|
defined($crit_thar) && defined($crit_thar->[1]) &&
|
|
isnum($warn_thar->[1]) && isnum($crit_thar->[1]) &&
|
|
$warn_thar->[0] eq $crit_thar->[0] &&
|
|
(!defined($warn_thar->[3]) || $warn_thar->[3] !~ /\^/) &&
|
|
(!defined($crit_thar->[3]) || $crit_thar->[3] !~ /\^/) &&
|
|
(($warn_thar->[1]>$crit_thar->[1] && ($warn_thar->[0] =~ />/ || $warn_thar->[0] eq '@')) ||
|
|
($warn_thar->[1]<$crit_thar->[1] && ($warn_thar->[0] =~ /</ || $warn_thar->[0] eq ':')) ||
|
|
($warn_thar->[0] eq ':' && $warn_thar->[2]>=$crit_thar->[2]) ||
|
|
($warn_thar->[0] eq '@' && $warn_thar->[2]<=$crit_thar->[2]));
|
|
return 0; # return with 0 means specs check out and are ok
|
|
}
|
|
|
|
# @DESCRIPTION : this compares var names from data to names given as plugin options treating them regex
|
|
# @LAST CHANGED : 08-26-12 by WL
|
|
# @INPUT : ARG1 - the name to search for
|
|
# @RETURNS : Keyname for what first one that matched from _thresholds
|
|
# Undef if nothing matched
|
|
# @PRIVACY & USE : PUBLIC, but its direct use should be rare. Must be used as an object instance function.
|
|
sub var_pattern_match {
|
|
my ($self, $name) = @_;
|
|
my $thresholds = $self->{'_thresholds'};
|
|
my $allvars = $self->{'_allVars'};
|
|
my $is_regex_match = $self->{'enable_regex_match'};
|
|
my $v;
|
|
my $pattern;
|
|
|
|
foreach $v (@{$allvars}) {
|
|
$pattern='';
|
|
if ($is_regex_match eq 1 && !defined($thresholds->{$v}{'PATTERN'})) {
|
|
$pattern=$v;
|
|
}
|
|
elsif ($is_regex_match ne 0 && defined($thresholds->{$v}{'PATTERN'})) {
|
|
$pattern = $thresholds->{$v}{'PATTERN'};
|
|
}
|
|
if ($pattern ne '' && $name =~ /$pattern/) {
|
|
$self->verb("Data name '".$name."' matches pattern '".$pattern."'");
|
|
return $v;
|
|
}
|
|
}
|
|
return undef;
|
|
}
|
|
|
|
# @DESCRIPTION : This function adds data results
|
|
# @LAST CHANGED : 08-27-12 by WL
|
|
# @INPUT : ARG1 - name of data variable
|
|
# ARG2 - data for this variable
|
|
# ARG3 - name of checked variable/parameter corresponding to this data variable
|
|
# default undef, assumed to be same as ARG1
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, Must be used as an object instance function
|
|
sub add_data {
|
|
my ($self, $dnam, $dval, $anam) = @_;
|
|
my $thresholds = $self->{'_thresholds'};
|
|
my $dataresults = $self-> {'_dataresults'};
|
|
my $datavars = $self -> {'_datavars'};
|
|
my $perfVars = $self->{'_perfVars'};
|
|
|
|
# determine what plugin options-specified var & threshold this data corresponds to
|
|
if (!defined($anam)) {
|
|
if ($self->{'enable_regex_match'} == 0) {
|
|
$anam = $dnam;
|
|
}
|
|
else {
|
|
$anam = $self->var_pattern_match($dnam);
|
|
$anam = $dnam if !defined($anam);
|
|
}
|
|
}
|
|
# set dataresults
|
|
if (exists($dataresults->{$dnam})) {
|
|
$dataresults->{$dnam}[0] = $dval;
|
|
$dataresults->{$dnam}[4] = $anam if defined($anam);
|
|
}
|
|
else {
|
|
$dataresults->{$dnam} = [$dval, 0, 0, '', $anam];
|
|
}
|
|
# reverse map array
|
|
$datavars->{$anam} = [] if !exists($datavars->{$anam});
|
|
push @{$datavars->{$anam}}, $dnam;
|
|
# setperf if all variables go to perf
|
|
if ($self->{'all_variables_perf'} == 1) {
|
|
$thresholds->{$anam}={} if !exists($thresholds->{$anam});
|
|
$thresholds->{$anam}{'PERF_DATALIST'} = [] if !exists($thresholds->{$anam}{'PERF_DATALIST'});
|
|
push @{$thresholds->{$anam}{'PERF_DATALIST'}}, $dnam;
|
|
if (!defined($thresholds->{$anam}{'PERF'})) {
|
|
push @{$perfVars}, $anam;
|
|
$thresholds->{$anam}{'PERF'} = 'YES';
|
|
}
|
|
}
|
|
}
|
|
|
|
# @DESCRIPTION : Accessor function that gets variable data
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - name of data variable
|
|
# @RETURNS : undef if variable does not exist and data otherwise
|
|
# @PRIVACY & USE : PUBLIC, Must be used as an object instance function
|
|
sub vardata {
|
|
my ($self,$dnam) = @_;
|
|
my $dataresults = $self->{'_dataresults'};
|
|
return undef if !exists($dataresults->{$dnam});
|
|
return $dataresults->{$dnam}[0];
|
|
}
|
|
|
|
# @DESCRIPTION : This function parses "WARN:threshold,CRIT:threshold,ABSENT:OK|WARNING|CRITICAL|UNKNOWN" combined threshold string
|
|
# Parsing of actual threshold i.e. what is after WARN, CRIT is done by parse_threshold() function
|
|
# @LAST CHANGED : 08-27-12 by WL
|
|
# @INPUT : ARG1 - String containing threshold line like "WARN:threshold,CRIT:threshold,ABSENT:OK|WARNING|CRITICAL|UNKNOWN"
|
|
# Acceptable comma-separated parts threshold specifiers are:
|
|
# WARN:<threshold> - warning threshold
|
|
# CRIT:<treshold> - critical threshold
|
|
# ABSENT:OK|WARNING|CRITICAL|UNKNOWN - nagios exit code if data for this variable is not found
|
|
# ZERO:OK|WARNING|CRITICAL|UNKNOWN - nagios exit code if data is 0
|
|
# DISPLAY:YES|NO - output data in plugin status line
|
|
# PERF:YES|NO - output data as plugin performance data
|
|
# SAVED:YES|NO - put results in saved data (this really should not be set manually)
|
|
# PATTERN:<regex> - enables regex match allowing more than one real data name to match this threshold
|
|
# NAME:<string> - overrides output status and perf name for this variable
|
|
# UOM:<string> - unit of measurement symbol to add to perf
|
|
# @RETURNS : Returns reference to a hash array, a library's structure for holding processed MULTI-THRESHOLD spec
|
|
# Note that this is MULTI-THRESHOLD hash structure, it itself contains threshold hashes returned by parse_threshold()
|
|
# @PRIVACY & USE : PUBLIC, but its use is discouraged. Maybe used directly or as an object instance function.
|
|
sub parse_thresholds_list {
|
|
my ($self,$in) = _self_args(@_);
|
|
my $thres = {};
|
|
my @tin = undef;
|
|
my $t = undef;
|
|
my $t2 = undef;
|
|
|
|
@tin = split(',', $in);
|
|
$t = uc $tin[0] if exists($tin[0]);
|
|
# old format with =warn,crit thresolds without specifying which one
|
|
if (defined($t) && $t !~ /^WARN/ && $t !~ /^CRIT/ && $t !~ /^ABSENT/ && $t !~ /^ZERO/ &&
|
|
$t !~ /^DISPLAY/ && $t !~ /^PERF/ && $t !~ /^SAVED/ &&
|
|
$t !~ /^PATTERN/ && $t !~ /^NAME/ && $t !~ /^UOM/) {
|
|
if (scalar(@tin)==2) {
|
|
if (defined($self)) {
|
|
$thres->{'WARN'} = $self->parse_threshold($tin[0]);
|
|
$thres->{'CRIT'} = $self->parse_threshold($tin[1]);
|
|
}
|
|
else {
|
|
$thres->{'WARN'} = parse_threshold($tin[0]);
|
|
$thres->{'CRIT'} = parse_threshold($tin[1]);
|
|
}
|
|
}
|
|
else {
|
|
print "Can not parse. Unknown threshold specification: $in\n";
|
|
print "Threshold line should be either both warning and critical thresholds separated by ',' or \n";
|
|
print "new format of: WARN:threshold,CRIT:threshold,ABSENT:OK|WARNING|CRITICAL|UNKNOWN\n";
|
|
print "which allows to specify all 3 (CRIT,WARN,ABSENT) or any one of them in any order\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
# new format with prefix specifying if its WARN or CRIT and support of ABSENT
|
|
else {
|
|
foreach $t (@tin) {
|
|
$t2 = uc $t;
|
|
if ($t2 =~ /^WARN\:(.*)/) {
|
|
if (defined($self)) {
|
|
$thres->{'WARN'} = $self->parse_threshold($1);
|
|
}
|
|
else {
|
|
$thres->{'WARN'} = parse_threshold($1);
|
|
}
|
|
}
|
|
elsif ($t2 =~ /^CRIT\:(.*)/) {
|
|
if (defined($self)) {
|
|
$thres->{'CRIT'} = $self->parse_threshold($1);
|
|
}
|
|
else {
|
|
$thres->{'CRIT'} = parse_threshold($1);
|
|
}
|
|
}
|
|
elsif ($t2 =~ /^ABSENT\:(.*)/) {
|
|
my $val = $1;
|
|
if (defined($ERRORS{$val})) {
|
|
$thres->{'ABSENT'} = $val;
|
|
}
|
|
else {
|
|
print "Invalid value $val after ABSENT. Acceptable values are: OK, WARNING, CRITICAL, UNKNOWN\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
elsif ($t2 =~ /^ZERO\:(.*)/) {
|
|
my $val = $1;
|
|
if (exists($ERRORS{$val})) {
|
|
$thres->{'ZERO'} = $val;
|
|
}
|
|
else {
|
|
print "Invalid value $val after ZERO. Acceptable values are: OK, WARNING, CRITICAL, UNKNOWN\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
elsif ($t2 =~ /^DISPLAY\:(.*)/) {
|
|
if ($1 eq 'YES' || $1 eq 'NO') {
|
|
$thres->{'DISPLAY'} = $1;
|
|
}
|
|
else {
|
|
print "Invalid value $1 after DISPLAY. Specify this as YES or NO.\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
elsif ($t2 =~ /^PERF\:(.*)/) {
|
|
if ($1 eq 'YES' || $1 eq 'NO') {
|
|
$thres->{'PERF'} = $1;
|
|
}
|
|
else {
|
|
print "Invalid value $1 after PERF. Specify this as YES or NO.\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
elsif ($t =~ /^PATTERN\:(.*)/i) {
|
|
$thres->{'PATTERN'} = $1;
|
|
$self->{'enable_regex_match'} = 2 if defined($self) && $self->{'enable_regex_match'} eq 0;
|
|
}
|
|
elsif ($t =~ /^NAME\:(.*)/i) {
|
|
$thres->{'NAME'} = $1;
|
|
}
|
|
elsif ($t =~ /^UOM\:(.*)/i) {
|
|
$thres->{'UOM'} = $1;
|
|
}
|
|
else {
|
|
print "Can not parse. Unknown threshold specification: $_\n";
|
|
print "Threshold line should be WARN:threshold,CRIT:threshold,ABSENT:OK|WARNING|CRITICAL|UNKNOWN,ZERO:OK|WARNING|CRITICAL|UNKNOWN\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
}
|
|
if (exists($thres->{'WARN'}) && exists($thres->{'CRIT'})) {
|
|
my $check_warncrit = 0;
|
|
if (defined($self)) {
|
|
$check_warncrit = $self->threshold_specok($thres->{'WARN'},$thres->{'CRIT'});
|
|
}
|
|
else {
|
|
$check_warncrit = threshold_specok($thres->{'WARN'},$thres->{'CRIT'});
|
|
}
|
|
if ($check_warncrit) {
|
|
print "All numeric warning values must be less then critical (or greater then when '<' is used)\n";
|
|
print "Note: to override this check prefix warning value with ^\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
return $thres;
|
|
}
|
|
|
|
# @DESCRIPTION : Adds variable to those whose thresholds would be checked
|
|
# @LAST CHANGED : 08-27-12 by WL
|
|
# @INPUT : ARG1 - name of the data variable
|
|
# ARG2 - either:
|
|
# 1) ref to combined thresholds hash array i.e. { 'WARN' => threshold array, 'CRIT' => threshold array, ABSENT => ... }
|
|
# such hash array is returned by by parse_thresholds_list function
|
|
# -- OR --
|
|
# 2) a tet string with a list of thresholds in the format
|
|
# WARN:threshold,CRIT:thresholod,ABSENT:OK|WARNING|CRITICAL|UNKNOWN,ZERO:WARNING|CRITICAL|UNKNOWN,PATTERN:pattern,NAME:name
|
|
# which would get parsed y parse_thresholds_list function into ref array
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, Recommend function for adding thresholds. Must be used as an object instance function
|
|
sub add_thresholds {
|
|
my ($self,$var,$th_in) = @_;
|
|
my $th;
|
|
if (ref($th_in) && (exists($th_in->{'WARN'}) || exists($th_in->{'CRIT'}) || exists($th_in->{'DISPLAY'}) ||
|
|
exists($th_in->{'PERF'}) || exists($th_in->{'SAVED'}) || exists($th_in->{'ABSENT'}) ||
|
|
exists($th_in->{'ZERO'}) || exists($th_in->{'PATTERN'}))) {
|
|
$th = $th_in;
|
|
}
|
|
else {
|
|
$th = $self->parse_thresholds_list($th_in);
|
|
}
|
|
if (!defined($var)) {
|
|
if (defined($th->{'NAME'})) {
|
|
$var = $th->{'NAME'};
|
|
}
|
|
elsif (defined($th->{'PATTERN'})) {
|
|
$var = $th->{'PATTERN'};
|
|
}
|
|
else {
|
|
print "Can not parse. No name or pattern in threshold: $th_in\n";
|
|
print "Specify threshold line as: NAME:name,PATTERN:regex,WARN:threshold,CRIT:threshold,ABSENT:OK|WARNING|CRITICAL|UNKNOWN,ZERO:OK|WARNING|CRITICAL|UNKNOWN\n";
|
|
$self->usage();
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
push @{$self->{'_allVars'}}, $var if !exists($self->{'_thresholds'}{$var});
|
|
$self->{'_thresholds'}{$var}=$th;
|
|
}
|
|
|
|
# @DESCRIPTION : Accessor function for thresholds and related variable settings on what and how to check
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - name of data variable
|
|
# ARG2 - name of the threshold or related data setting to return
|
|
# This can be: "WARN", "CRIT", "ABSENT", "ZERO", "DISPLAY", "PERF"
|
|
# @RETURNS : undef if variable does not exist
|
|
# if variable exists and "WARN" or "CRIT" thresholds are requested, it returns asociated
|
|
# threshold hash array structure for named threshold of the type returned by parse_threshold()
|
|
# for ABSENT, ZERO, DISPLAY, PERF and other, it returns a string for this check setting
|
|
# @PRIVACY & USE : PUBLIC, Must be used as an object instance function
|
|
sub get_threshold {
|
|
my ($self,$var,$thname) = @_;
|
|
return undef if !exists($self->{'_thresholds'}{$var}) || !exists($self->{'_thresholds'}{$var}{$thname});
|
|
return $self->{'_thresholds'}{$var}{$thname};
|
|
}
|
|
|
|
# @DESCRIPTION : Modifier function for thresholds and related variable settings on how to check and display results
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - name of data variable
|
|
# ARG2 - type of the threshold or related data setting
|
|
# This can be: "WARN", "CRIT", "ABSENT", "ZERO", "DISPLAY", "PERF"
|
|
# ARG3 - what to set this to, for "WARN" and "CRIT" this must be hash array returned by parse_threshold()
|
|
# @RETURNS : 0 if type you want to set is not one of "WARN", "CRIT", "ZERO" or other acceptable settings
|
|
# 1 on success
|
|
# @PRIVACY & USE : PUBLIC, Must be used as an object instance function
|
|
sub set_threshold {
|
|
my ($self,$var,$thname,$thdata) = @_;
|
|
if ($thname ne 'WARN' && $thname ne 'CRIT' && $thname ne 'ZERO' && $thname ne 'PATTERN' && $thname ne 'NAME' &&
|
|
$thname ne 'ABSENT' && $thname ne 'PERF' && $thname ne 'DISPLAY' && $thname ne 'SAVED' && $thname ne 'UOM') {
|
|
return 0;
|
|
}
|
|
$self->{'_thresholds'}{$var}={} if !exists($self->{'_thresholds'}{$var});
|
|
$self->{'_thresholds'}{$var}{$thname}=$thdata;
|
|
return 1;
|
|
}
|
|
|
|
# @DESCRIPTION : Returns list variables for GetOptions(..) that are long-options based on known/defined variable
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : Array of additional options based on KNOWN_STATS_VARS
|
|
# @PRIVACY & USE : PUBLIC, Special use case with GetOpt::Long. Must be used as an object instance function
|
|
sub additional_options_list {
|
|
my $self = shift;
|
|
|
|
my $known_vars = $self->{'knownStatusVars'};
|
|
my ($o_rprefix, $o_rsuffix, $v, $v2) = ('','','','');
|
|
$o_rprefix = $self->{'o_rprefix'} if defined($self->{'o_rprefix'});
|
|
$o_rsuffix = $self->{'o_rsuffix'} if defined($self->{'o_rsuffix'});
|
|
my @VarOptions = ();
|
|
|
|
if ($self->{'enable_long_options'} != -1) {
|
|
if (defined($self) && defined($known_vars)) {
|
|
foreach $v (keys %{$known_vars}) {
|
|
if (exists($known_vars->{$v}[3]) && $known_vars->{$v}[3] ne '') {
|
|
push @VarOptions,$v."=s";
|
|
if ($self->{'enable_rate_of_change'} eq 1 && $known_vars->{$v}[1] eq 'COUNTER' && ($o_rprefix ne '' || $o_rsuffix ne '')) {
|
|
$v2 = $o_rprefix.$v.$o_rsuffix;
|
|
push @VarOptions,$v2."=s"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (scalar(@VarOptions)>0) {
|
|
$self->{'enable_long_options'} = 1;
|
|
}
|
|
return @VarOptions;
|
|
}
|
|
|
|
# @DESCRIPTION : Prints out help for generated long options
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : a string of text for help output
|
|
# @PRIVACY & USE : PUBLIC, Special use case with GetOpt::Long. Must be used as an object instance function
|
|
sub additional_options_help {
|
|
my $self = shift;
|
|
my $vname;
|
|
my $vname2;
|
|
my $counter = 0;
|
|
my $known_vars = $self->{'knownStatusVars'};
|
|
|
|
if ($self->{'enable_long_options'} != 1) { return ''; }
|
|
|
|
my $out=" These options are all --long_name=<list of specifiers separated by ,>
|
|
where specifiers are one or more of:
|
|
WARN:threshold - warning alert threshold
|
|
CRIT:threshold - critical alert threshold
|
|
Threshold is a value (usually numeric) which may have the following prefix:
|
|
> - warn if data is above this value (default for numeric values)
|
|
< - warn if data is below this value (must be followed by number)
|
|
= - warn if data is equal to this value (default for non-numeric values)
|
|
! - warn if data is not equal to this value
|
|
Threshold can also be specified as a range in two forms:
|
|
num1:num2 - warn if data is outside range i.e. if data<num1 or data>num2
|
|
\@num1:num2 - warn if data is in range i.e. data>=num1 && data<=num2
|
|
ABSENT:OK|WARNING|CRITICAL|UNKNOWN - Nagios alert (or lock of thereof) if data is absent
|
|
ZERO:OK|WARNING|CRITICAL|UNKNOWN - Nagios alert (or lock of thereof) if result is 0
|
|
DISPLAY:YES|NO - Specifies if data should be included in nagios status line output
|
|
PERF:YES|NO - Output results as performance data or not (always YES if asked for rate)
|
|
NAME:<string> - Change the name to <string> in status and PERF output\n\n";
|
|
|
|
# add more options based on KNOWN_STATUS_VARS array
|
|
foreach $vname (keys(%{$known_vars})) {
|
|
if (exists($known_vars->{$vname}[3])) {
|
|
$counter++;
|
|
$out .= ' --'.$vname."=WARN:threshold,CRIT:threshold,<other specifiers>\n";
|
|
$out .= " ".$known_vars->{$vname}[3]."\n";
|
|
if ($known_vars->{$vname}[1] eq 'COUNTER' && $self->{'enable_rate_of_change'} eq 1) {
|
|
$vname2=$o_rprefix.$vname.$o_rsuffix;
|
|
$out .= ' --'.$vname2."=WARN:threshold,CRIT:threshold,<other specifiers>\n";
|
|
$out .= " Rate of Change of ".$known_vars->{$vname}[3]."\n";
|
|
}
|
|
}
|
|
}
|
|
if ($counter>0) { return $out; }
|
|
return "";
|
|
}
|
|
|
|
# @DESCRIPTION : Processes standard options parsing out of them variables to be checked
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : ARG1 - Options data hash from GetOpt::Long
|
|
# ARG2 - option --verbose or -v or --debug : undef normally and "" or filename if debug enabled
|
|
# ARG3 - option --variables or -a in WL's plugins : comma-separated list of variables to check
|
|
# ARG4 - option --warn or -w : comma-separated warning thresholds for variables in ARG3
|
|
# ARG5 - option --crit or -c : comma-separated critical thresholds for variables in ARG3
|
|
# ARG6 - option --perf or -f in WL's plugin: all regular variables should also go to perf data
|
|
# ARG7 - option --perfvars or -A in WL's plugins: command-separated list of variables whose data goes to PERF output
|
|
# ARG8 - prefix to distinguish rate variables, maybe "" but usually this is "rate_"
|
|
# ARG9 - suffix to distinguish rate variables, only if ARG7 is "", otherwise optional and absent
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, To be used shortly after GetOptions. Must be used as an object instance function
|
|
sub options_startprocessing {
|
|
my ($self, $Options, $o_verb, $o_variables, $o_warn, $o_crit, $o_perf, $o_perfvars, $o_rprefix, $o_rsuffix) = @_;
|
|
|
|
# Copy input parameters to object hash array, set them if not present
|
|
$o_rprefix="" if !defined($o_rprefix);
|
|
$o_rsuffix="" if !defined($o_rsuffix);
|
|
$o_crit="" if !defined($o_crit);
|
|
$o_warn="" if !defined($o_warn);
|
|
$o_variables="" if !defined($o_variables);
|
|
$self->{'o_variables'} = $o_variables;
|
|
$self->{'o_perfvars'} = $o_perfvars;
|
|
$self->{'o_crit'} = $o_crit;
|
|
$self->{'o_warn'} = $o_warn;
|
|
$self->{'o_perf'} = $o_perf;
|
|
$self->{'o_rprefix'} = $o_rprefix;
|
|
$self->{'o_rsuffix'} = $o_rsuffix;
|
|
$self->{'verbose'} = $o_verb if defined($o_verb);
|
|
# start processing
|
|
my $perfVars = $self->{'_perfVars'};
|
|
my $ar_varsL = $self->{'_ar_varsL'};
|
|
my $ar_critLv = $self->{'_ar_critLv'};
|
|
my $ar_warnLv = $self->{'_ar_warnLv'};
|
|
my $known_vars = $self->{'knownStatusVars'};
|
|
$o_rprefix = lc $o_rprefix;
|
|
$o_rsuffix = lc $o_rsuffix;
|
|
# process o_perfvars option
|
|
if (defined($o_perfvars)) {
|
|
@{$perfVars} = split( /,/ , lc $o_perfvars );
|
|
if (scalar(@{$perfVars})==0) {
|
|
$o_perfvars='*';
|
|
$self->{'o_perfvars'}='*';
|
|
}
|
|
if ($o_perfvars eq '*') {
|
|
$self->{'all_variables_perf'} = 1;
|
|
}
|
|
else {
|
|
# below loop converts rate variables to internal representation
|
|
for (my $i=0; $i<scalar(@{$perfVars}); $i++) {
|
|
$perfVars->[$i] = '&'.$1 if $perfVars->[$i] =~ /^$o_rprefix(.*)$o_rsuffix$/;
|
|
}
|
|
}
|
|
}
|
|
if (defined($o_warn) || defined($o_crit) || defined($o_variables)) {
|
|
if (defined($o_variables)) {
|
|
@{$ar_varsL}=split( /,/ , lc $o_variables );
|
|
if (defined($o_warn)) {
|
|
$o_warn.="~" if $o_warn =~ /,$/;
|
|
@{$ar_warnLv}=split( /,/ , lc $o_warn );
|
|
}
|
|
if (defined($o_crit)) {
|
|
$o_crit.="~" if $o_crit =~ /,$/;
|
|
@{$ar_critLv}=split( /,/ , lc $o_crit );
|
|
}
|
|
}
|
|
else {
|
|
print "Specifying warning or critical thresholds requires specifying list of variables to be checked\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
# this is a special loop to check stats-variables options such as "connected_clients=WARN:warning,CRIT:critical"
|
|
# which are specified as long options (new extended threshold line spec introduced in check_redis and check_memcached)
|
|
my ($vname,$vname2) = (undef,undef);
|
|
foreach $vname (keys(%{$known_vars})) {
|
|
$vname2=$o_rprefix.$vname.$o_rsuffix;
|
|
if (exists($known_vars->{$vname}[3])) {
|
|
if (exists($Options->{$vname})) {
|
|
$self->verb("Option $vname found with spec parameter: ".$Options->{$vname});
|
|
$self->add_thresholds($vname,$Options->{$vname});
|
|
}
|
|
if (exists($Options->{$vname2})) {
|
|
$self->verb("Rate option $vname2 found with spec parameter: ".$Options->{$vname2});
|
|
$self->add_thresholds('&'.$vname,$Options->{$vname2});
|
|
}
|
|
}
|
|
}
|
|
$self->{'_called_options_startprocessing'}=1;
|
|
}
|
|
|
|
# @DESCRIPTION : Internal function. Parses and sets thresholds for given list of variables after all options have been processed
|
|
# @LAST CHANGED : 08-20-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PRIVATE, Must be used as an object instance function
|
|
sub _options_setthresholds {
|
|
my $self = shift;
|
|
|
|
my $perfVars = $self->{'_perfVars'};
|
|
my $ar_varsL = $self->{'_ar_varsL'};
|
|
my $ar_critLv = $self->{'_ar_critLv'};
|
|
my $ar_warnLv = $self->{'_ar_warnLv'};
|
|
my $known_vars = $self->{'knownStatusVars'};
|
|
my $thresholds = $self->{'_thresholds'};
|
|
my ($o_rprefix, $o_rsuffix) = ("", "");
|
|
$o_rprefix = $self->{'o_rprefix'} if exists($self->{'o_rprefix'});
|
|
$o_rsuffix = $self->{'o_rsuffix'} if exists($self->{'o_rsuffix'});
|
|
|
|
if (scalar(@{$ar_warnLv})!=scalar(@{$ar_varsL}) || scalar(@{$ar_critLv})!=scalar(@{$ar_varsL})) {
|
|
printf "Number of specified warning levels (%d) and critical levels (%d) must be equal to the number of attributes specified at '-a' (%d). If you need to ignore some attribute do it as ',,'\n", scalar(@{$ar_warnLv}), scalar(@{$ar_critLv}), scalar(@{$ar_varsL});
|
|
$self->verb("Warning Levels: ".join(",",@{$ar_warnLv}));
|
|
$self->verb("Critical Levels: ".join(",",@{$ar_critLv}));
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
for (my $i=0; $i<scalar(@{$ar_varsL}); $i++) {
|
|
$ar_varsL->[$i] = '&'.$1 if $ar_varsL->[$i] =~ /^$o_rprefix(.*)$o_rsuffix$/;
|
|
if ($ar_varsL->[$i] =~ /^&(.*)/) {
|
|
if (!defined($self->{'o_prevperf'})) {
|
|
print "Calculating rate variable such as ".$ar_varsL->[$i]." requires previous performance data. Please add '-P \$SERVICEPERFDATA\$' to your nagios command line.\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
if (defined($known_vars->{$1}) && $known_vars->{$1}[0] ne 'COUNTER') {
|
|
print "$1 is not a COUNTER variable for which rate of change should be calculated\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
if (!exists($thresholds->{$ar_varsL->[$i]})) {
|
|
my $warn = $self->parse_threshold($ar_warnLv->[$i]);
|
|
my $crit = $self->parse_threshold($ar_critLv->[$i]);
|
|
if ($self->threshold_specok($warn,$crit)) {
|
|
print "All numeric warning values must be less then critical (or greater then when '<' is used)\n";
|
|
print "Note: to override this check prefix warning value with ^\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
$self->add_thresholds($ar_varsL->[$i], {'WARN'=>$warn,'CRIT'=>$crit} );
|
|
}
|
|
}
|
|
}
|
|
|
|
# @DESCRIPTION : Internal helper function. Finds time when previous performance data was calculated/saved at
|
|
# @DEVNOTE : Right now this library and function only supports one previous performance data set,
|
|
# but check_snmp_netint plugin supports multiple sets and there the code is more complex,
|
|
# As this function originated there, that code is commented out right now.
|
|
# @LAST CHANGED : 08-21-12 by WL
|
|
# @INPUT : ARG1 - reference to previous performance data hash array. It looks for _ptime variable there.
|
|
# ARG2 - string with previous performance time in unix seconds. This may come from separate plugin option.
|
|
# @RETURNS : Time in unix seconds frm 1970 or undef if it was not located
|
|
# @PRIVACY & USE : PRIVATE, Maybe used directly or as an object instance function.
|
|
sub _set_prevtime {
|
|
my ($self,$prevperf,$o_prevtime) = _self_args(@_);
|
|
my $perfcheck_time;
|
|
|
|
if (defined($o_prevtime)) {
|
|
# push @prev_time, $o_prevtime;
|
|
# $prev_perf{ptime}=$o_prevtime;
|
|
$perfcheck_time=$o_prevtime;
|
|
}
|
|
elsif (defined($prevperf) && defined($prevperf->{'_ptime'})) {
|
|
# push @prev_time, $prev_perf{ptime};
|
|
$perfcheck_time=$prevperf->{'_ptime'};
|
|
}
|
|
else {
|
|
# @prev_time=();
|
|
$perfcheck_time=undef;
|
|
}
|
|
# numeric sort for timestamp array (this is from lowest time to highiest, i.e. to latest)
|
|
# my %ptimes=();
|
|
# $ptimes{$_}=$_ foreach @prev_time;
|
|
# @prev_time = sort { $a <=> $b } keys(%ptimes);
|
|
return $perfcheck_time;
|
|
}
|
|
|
|
# @DESCRIPTION : Processes standard options, setting up thresholds based on options that are to be checked
|
|
# @LAST CHANGED : 08-22-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, To be called after plugin finished processing its own custom options. Must be used as an object instance function
|
|
sub options_finishprocessing {
|
|
my $self = shift;
|
|
|
|
if (!exists($self->{'_called_options_finishprocessing'})) {
|
|
# process previous performance data
|
|
my $prevperf = $self->{'_prevPerf'};
|
|
if (defined($self->{'o_prevperf'})) {
|
|
if (defined($self->{'o_perf'}) || defined($self->{'o_perfvars'})) {
|
|
%{$prevperf}=$self->process_perf($self->{'o_prevperf'});
|
|
$self->{'_perfcheck_time'} = $self->_set_prevtime($prevperf,$self->{'o_prevtime'});
|
|
}
|
|
else {
|
|
print "--prevperf can only be used with --perf or --perfvars options\n";
|
|
if (defined($self)) { $self->usage(); }
|
|
exit $ERRORS{"UNKNOWN"};
|
|
}
|
|
}
|
|
# set thresholds
|
|
$self->_options_setthresholds();
|
|
# prepare data results arrays
|
|
my $dataresults = $self->{'_dataresults'};
|
|
my $thresholds = $self->{'_thresholds'};
|
|
$dataresults->{$_} = [undef, 0, 0] foreach(@{$self->{'_allVars'}});
|
|
if (defined($self->{'_perfVars'})) {
|
|
foreach(@{$self->{'_perfVars'}}) {
|
|
$dataresults->{$_} = [undef, 0, 0] if !exists($dataresults->{$_});
|
|
$thresholds->{$_} = {} if !exists($thresholds->{$_});
|
|
$thresholds->{$_}{'PERF'} = 'YES';
|
|
}
|
|
}
|
|
# mark as having finished
|
|
$self->{'_called_options_finishprocessing'}=1;
|
|
}
|
|
}
|
|
|
|
# @DESCRIPTION : Accessor function for previously saved perfdata
|
|
# @LAST CHANGED : 08-22-12 by WL
|
|
# @INPUT : ARG1 - varname
|
|
# @RETURNS : value of that variable on previous plugin run, undef if not known
|
|
# @PRIVACY & USE : PUBLIC, Must be used as an object instance function
|
|
sub prev_perf {
|
|
my ($self,$var) = @_;
|
|
if (defined($self) && defined($self->{'_prevPerf'}{$var})) {
|
|
return $self->{'_prevPerf'}{$var};
|
|
}
|
|
return undef;
|
|
}
|
|
|
|
# @DESCRIPTION : Accessor function for exit status code
|
|
# @LAST CHANGED : 08-21-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : current expected exit status code
|
|
# @PRIVACY & USE : PUBLIC, Must be used as an object instance function
|
|
sub statuscode {
|
|
my $self = shift;
|
|
return $self->{'_statuscode'};
|
|
}
|
|
|
|
# @DESCRIPTION : Sets plugin exist status
|
|
# @LAST CHANGED : 08-21-12 by WL
|
|
# @INPUT : status code string - one of "WARNING", "CRITICAL", "UNKNOWN".
|
|
# @RETURNS : 0 on success, 1 if this status code is below level that plugin would exit with and as such it was not set
|
|
# @PRIVACY & USE : PUBLIC, Must be used as an object instance function
|
|
sub set_statuscode {
|
|
my ($self,$newcode) = @_;
|
|
|
|
if ($newcode eq 'UNKNOWN') {
|
|
$self->{'_statuscode'} = 'UNKNOWN';
|
|
return 0;
|
|
}
|
|
if ($self->{'_statuscode'} eq 'UNKNOWN') { return 1; }
|
|
elsif ($self->{'_statuscode'} eq 'CRITICAL') {
|
|
if ($newcode eq 'CRITICAL') { return 0;}
|
|
else { return 1; }
|
|
}
|
|
elsif ($self->{'_statuscode'} eq 'WARNING') {
|
|
if ($newcode eq 'CRITICAL') {
|
|
$self->{'_statuscode'} ='CRITICAL';
|
|
return 0;
|
|
}
|
|
elsif ($newcode eq 'WARNING') { return 0; }
|
|
else { return 1; }
|
|
}
|
|
elsif ($self->{'_statuscode'} eq 'OK') {
|
|
if ($newcode eq 'CRITICAL' || $newcode eq 'WARNING') {
|
|
$self->{'_statuscode'} = $newcode;
|
|
return 0;
|
|
}
|
|
else { return 1; }
|
|
}
|
|
else {
|
|
printf "SYSTEM ERROR: status code $newcode not supported";
|
|
exit $ERRORS{'UNKNOWN'};
|
|
}
|
|
return 1; # should never get here
|
|
}
|
|
|
|
# @DESCRIPTION : This function is called closer to end of the code after plugin retrieved data and
|
|
# assigned values to variables. This function checks variables against all thresholds.
|
|
# It prepares statusdata and statusinfo and exitcode.
|
|
# @LAST CHANGED : 09-03-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, To be called after variables have values. Must be used as an object instance function
|
|
sub main_checkvars {
|
|
my $self = shift;
|
|
|
|
$self->options_finishprocessing() if !exists($self->{'_called_options_finshprocessing'});
|
|
if (exists($self->{'_called_main_checkvars'})) { return; }
|
|
|
|
my $thresholds = $self->{'_thresholds'};
|
|
my $dataresults = $self->{'_dataresults'};
|
|
my $allVars = $self->{'_allVars'};
|
|
my $datavars = $self->{'_datavars'};
|
|
|
|
my ($dvar,$avar,$aname,$perf_str,$chk)=(undef,undef,undef,undef,undef);
|
|
|
|
# main loop to check for warning & critical thresholds
|
|
for (my $i=0;$i<scalar(@{$allVars});$i++) {
|
|
$avar = $allVars->[$i];
|
|
if (!defined($datavars->{$avar}) || scalar(@{$datavars->{$avar}})==0) {
|
|
if (defined($thresholds->{$avar}{'ABSENT'})) {
|
|
$self->set_statuscode($thresholds->{$avar}{'ABSENT'});
|
|
}
|
|
else {
|
|
$self->set_statuscode("CRITICAL");
|
|
}
|
|
$aname = $self->out_name($avar);
|
|
$self->addto_statusinfo_output($avar, "$aname data is missing");
|
|
}
|
|
foreach $dvar (@{$datavars->{$avar}}) {
|
|
$aname = $self->out_name($dvar);
|
|
if (defined($dataresults->{$dvar}[0])) {
|
|
# main check
|
|
if (defined($avar)) {
|
|
if ($dataresults->{$dvar}[0] eq 0 && exists($thresholds->{$avar}{'ZERO'})) {
|
|
$self->set_statuscode($thresholds->{$avar}{'ZERO'});
|
|
$self->addto_statusinfo_output($dvar, "$aname is zero") if $self->statuscode() ne 'OK';
|
|
}
|
|
else {
|
|
$chk=undef;
|
|
if (exists($thresholds->{$avar}{'CRIT'})) {
|
|
$chk = $self->check_threshold($aname,lc $dataresults->{$dvar}[0], $thresholds->{$avar}{'CRIT'});
|
|
if ($chk) {
|
|
$self->set_statuscode("CRITICAL");
|
|
$self->addto_statusinfo_output($dvar,$chk);
|
|
}
|
|
}
|
|
if (exists($thresholds->{$avar}{'WARN'}) && (!defined($chk) || !$chk)) {
|
|
$chk = $self->check_threshold($aname,lc $dataresults->{$dvar}[0], $thresholds->{$avar}{'WARN'});
|
|
if ($chk) {
|
|
$self->set_statuscode("WARNING");
|
|
$self->addto_statusinfo_output($dvar,$chk);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
# if we did not output to status line yet, do so
|
|
$self->addto_statusdata_output($dvar,$aname." is ".$dataresults->{$dvar}[0]);
|
|
|
|
# if we were asked to output performance, prepare it but do not output until later
|
|
if ((defined($self->{'o_perf'}) && defined($avar) && !exists($thresholds->{$avar}{'PERF'})) ||
|
|
(exists($thresholds->{$avar}{'PERF'}) && $thresholds->{$avar}{'PERF'} eq 'YES')) {
|
|
$perf_str = perf_name($aname).'='.$dataresults->{$dvar}[0];
|
|
$self->set_perfdata($dvar, $perf_str, undef, "IFNOTSET"); # with undef UOM would get added
|
|
$dataresults->{$dvar}[2]=0; # this would clear -1 from preset perf data, making it ready for output
|
|
# below is where threshold info gets added to perfdata
|
|
if ((exists($thresholds->{$avar}{'WARN'}[5]) && $thresholds->{$avar}{'WARN'}[5] ne '') ||
|
|
(exists($thresholds->{$avar}{'CRIT'}[5]) && $thresholds->{$avar}{'CRIT'}[5] ne '')) {
|
|
$perf_str = ';';
|
|
$perf_str .= $thresholds->{$avar}{'WARN'}[5] if exists($thresholds->{$avar}{'WARN'}[5]) && $thresholds->{$avar}{'WARN'}[5] ne '';
|
|
$perf_str .= ';'.$thresholds->{$avar}{'CRIT'}[5] if exists($thresholds->{$avar}{'CRIT'}[5]) && $thresholds->{$avar}{'CRIT'}[5] ne '';
|
|
$self->set_perfdata($dvar, $perf_str, '', "ADD");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$self->{'_called_main_checkvars'}=1;
|
|
# $statusinfo=trim($statusinfo);
|
|
# $statusdata=trim($statusdata);
|
|
}
|
|
|
|
# @DESCRIPTION : This function is at the end. It prepares PERFOUT for output collecting all perf variables data
|
|
# @LAST CHANGED : 08-26-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, To be called after variables have values. Must be used as an object instance function
|
|
# Calling this function direcly is optional, its automatically called on 1st call to perfdata()
|
|
sub main_perfvars {
|
|
my $self = shift;
|
|
|
|
my $dataresults = $self->{'_dataresults'};
|
|
my $PERF_OK_STATUS_REGEX = $self->{'perfOKStatusRegex'};
|
|
my $perfVars = $self->{'_perfVars'};
|
|
my $known_vars = $self->{'knownStatusVars'};
|
|
my $datavars = $self->{'_datavars'};
|
|
my $avar;
|
|
my $dvar;
|
|
|
|
$self->main_checkvars() if !exists($self->{'_called_main_checkvars'});
|
|
if (exists($self->{'_called_main_perfvars'})) { return; }
|
|
|
|
for (my $i=0;$i<scalar(@{$perfVars});$i++) {
|
|
$avar=$perfVars->[$i];
|
|
if (!defined($datavars->{$avar}) || scalar(@{$datavars->{$avar}})==0) {
|
|
$self->verb("Perfvar: $avar selected for PERFOUT but data not available");
|
|
}
|
|
else {
|
|
foreach $dvar (@{$datavars->{$avar}}) {
|
|
if (defined($dataresults->{$dvar}[0])) {
|
|
$self->verb("Perfvar: $dvar ($avar) = ".$dataresults->{$dvar}[0]);
|
|
if (!defined($known_vars->{$avar}[1]) || $known_vars->{$avar}[1] =~ /$PERF_OK_STATUS_REGEX/ ) {
|
|
$self->addto_perfdata_output($dvar);
|
|
}
|
|
else {
|
|
$self->verb(" -- not adding to perfdata because of it is '".$known_vars->{$avar}[1]."' type variable --");
|
|
}
|
|
}
|
|
else {
|
|
$self->verb("Perfvar: $avar selected for PERFOUT but data not defined");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (defined($self->{'o_prevperf'})) {
|
|
$self->addto_perfdata_output('_ptime', "_ptime=".time(), "REPLACE");
|
|
}
|
|
foreach $dvar (keys %{$dataresults}) {
|
|
if (defined($dataresults->{$dvar}[3]) && $dataresults->{$dvar}[3] ne '') {
|
|
$self->verb("Perfvar (Dataresults Loop): $dvar => ".$dataresults->{$dvar}[3]);
|
|
$self->addto_perfdata_output($dvar);
|
|
}
|
|
}
|
|
|
|
$self->{'_called_main_perfvars'}=1;
|
|
# $perfdata = trim($perfdata);
|
|
}
|
|
|
|
# @DESCRIPTION : This function should be called at the very very end, it returns perf data output
|
|
# @LAST CHANGED : 08-22-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : string of perfdata starting with "|"
|
|
# @PRIVACY & USE : PUBLIC, To be called during plugin output. Must be used as an object instance function
|
|
sub perfdata {
|
|
my $self=shift;
|
|
|
|
$self->main_perfvars() if !exists($self->{'_called_main_perfvars'});
|
|
my $perfdata = trim($self->{'_perfdata'});
|
|
if ($perfdata ne '') {
|
|
return " | " . $perfdata;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
# @DESCRIPTION : This function is called after data is available and calculates rate variables
|
|
# based on current and previous (saved in perfdata) values.
|
|
# @LAST CHANGED : 08-27-12 by WL
|
|
# @INPUT : none
|
|
# @RETURNS : nothing (future: 1 on success, 0 on error)
|
|
# @PRIVACY & USE : PUBLIC, To be called after variables have values. Must be used as an object instance function
|
|
sub calculate_ratevars {
|
|
my $self = shift;
|
|
|
|
my $prev_perf = $self->{'_prevPerf'};
|
|
my $ptime = $self->{'_perfcheck_time'};
|
|
my $thresholds = $self->{'_thresholds'};
|
|
my $dataresults = $self->{'_dataresults'};
|
|
my $datavars = $self->{'_datavars'};
|
|
my $allVars = $self->{'_allVars'};
|
|
|
|
my ($avar,$dvar,$nvar) = (undef,undef,undef);
|
|
my $timenow=time();
|
|
if (defined($self->{'o_prevperf'}) && (defined($self->{'o_perf'}) || defined($self->{'o_perfvars'}))) {
|
|
for (my $i=0;$i<scalar(@{$allVars});$i++) {
|
|
if ($allVars->[$i] =~ /^&(.*)/) {
|
|
$avar = $1;
|
|
if (defined($datavars->{$avar}) && scalar(@{$datavars->{$avar}})>0) {
|
|
foreach $dvar (@{$datavars->{$avar}}) {
|
|
$nvar = '&'.$dvar;
|
|
# this forces perfdata output if it was not already
|
|
if (defined($dataresults->{$dvar}) && $dataresults->{$dvar}[2]<1 &&
|
|
(!defined($dataresults->{$dvar}[3]) || $dataresults->{$dvar}[3] eq '')) {
|
|
$self->set_perfdata($dvar, perf_name($self->out_name($dvar)).'='.$dataresults->{$dvar}[0], undef, "IFNOTSET");
|
|
$self->set_threshold($dvar,'PERF','YES');
|
|
$self->set_threshold($dvar,'SAVED','YES'); # will replace PERF in the future
|
|
}
|
|
if (defined($prev_perf->{$dvar}) && defined($ptime)) {
|
|
$self->add_data($nvar,
|
|
sprintf("%.2f",($dataresults->{$dvar}[0]-$prev_perf->{$dvar})/($timenow-$ptime)));
|
|
$self->verb("Calculating Rate of Change for $dvar ($avar) : ".$nvar."=". $self->vardata($nvar));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
##################################### END OF THE LIBRARY FUNCTIONS #########################################
|
|
|
|
# parse command line options
|
|
sub check_options {
|
|
my $opt;
|
|
my $nlib = shift;
|
|
my %Options = ();
|
|
Getopt::Long::Configure("bundling");
|
|
GetOptions(\%Options,
|
|
'v:s' => \$o_verb, 'verbose:s' => \$o_verb, "debug:s" => \$o_verb,
|
|
'h' => \$o_help, 'help' => \$o_help,
|
|
'H:s' => \$o_host, 'hostname:s' => \$o_host,
|
|
'p:i' => \$o_port, 'port:i' => \$o_port,
|
|
't:i' => \$o_timeout, 'timeout:i' => \$o_timeout,
|
|
'V' => \$o_version, 'version' => \$o_version,
|
|
's:s' => \$o_mdsopt, 'stat:s' => \$o_mdsopt,
|
|
'a:s' => \$o_variables, 'variables:s' => \$o_variables,
|
|
'c:s' => \$o_crit, 'critical:s' => \$o_crit,
|
|
'w:s' => \$o_warn, 'warn:s' => \$o_warn,
|
|
'f:s' => \$o_perf, 'perfparse:s' => \$o_perf,
|
|
'A:s' => \$o_perfvars, 'perfvars:s' => \$o_perfvars,
|
|
'T:s' => \$o_timecheck, 'response_time:s' => \$o_timecheck,
|
|
'R:s' => \$o_hitrate, 'hitrate:s' => \$o_hitrate,
|
|
'U:s' => \$o_utilsize, 'utilization:s' => \$o_utilsize,
|
|
'P:s' => \$o_prevperf, 'prev_perfdata:s' => \$o_prevperf,
|
|
'E:s' => \$o_prevtime, 'prev_checktime:s'=> \$o_prevtime,
|
|
'o=s' => \@o_check, 'check|option=s' => \@o_check,
|
|
'rate_label:s' => \$o_ratelabel,
|
|
map { ($_) } $nlib->additional_options_list()
|
|
);
|
|
|
|
($o_rprefix,$o_rsuffix)=split(/,/,$o_ratelabel) if defined($o_ratelabel) && $o_ratelabel ne '';
|
|
|
|
# Standard nagios plugin required options
|
|
if (defined($o_help)) { help($nlib); exit $ERRORS{"UNKNOWN"} };
|
|
if (defined($o_version)) { p_version(); exit $ERRORS{"UNKNOWN"} };
|
|
|
|
# access/connection options
|
|
if (!defined($o_host)) { print "Please specify hostname (-H)\n"; print_usage(); exit $ERRORS{"UNKNOWN"}; }
|
|
@o_mdslist=split(/,/, lc $o_mdsopt) if defined($o_mdsopt) && $o_mdsopt ne '';
|
|
|
|
# now start options processing in the library
|
|
$nlib->options_startprocessing(\%Options, $o_verb, $o_variables, $o_warn, $o_crit, $o_perf, $o_perfvars, $o_rprefix, $o_rsuffix);
|
|
|
|
# additional variables/options calculated and added by this plugin
|
|
if (defined($o_timecheck) && $o_timecheck ne '') {
|
|
$nlib->verb("Processing timecheck thresholds: $o_timecheck");
|
|
$nlib->add_thresholds('response_time',$o_timecheck);
|
|
}
|
|
if (defined($o_hitrate) && $o_hitrate ne '') {
|
|
$nlib->verb("Processing hitrate thresholds: $o_hitrate");
|
|
$nlib->add_thresholds('hitrate',$o_hitrate);
|
|
$nlib->set_threshold('hitrate','ZERO','OK') if !defined($nlib->get_threshold('hitrate','ZERO')); # except case of hitrate=0, don't remember why I added it
|
|
}
|
|
if (defined($o_utilsize) && $o_utilsize ne '') {
|
|
$nlib->verb("Processing memory utilization thresholds: $o_utilsize");
|
|
$nlib->add_thresholds('utilization',$o_utilsize);
|
|
}
|
|
# general check option, allows to specify everything, can be repeated more than once
|
|
foreach $opt (@o_check) {
|
|
$nlib->verb("Processing general check option: ".$opt);
|
|
$nlib->add_thresholds(undef,$opt);
|
|
}
|
|
|
|
# finish it up
|
|
$nlib->options_finishprocessing();
|
|
|
|
$HOSTNAME = $o_host if defined($o_host);
|
|
$PORT = $o_port if defined($o_port);
|
|
$TIMEOUT = $o_timeout if defined($o_timeout);
|
|
}
|
|
|
|
# Get the alarm signal (just in case nagios screws up)
|
|
$SIG{'ALRM'} = sub {
|
|
$memd->disconnect_all if defined($memd);
|
|
print ("ERROR: Alarm signal (Nagios time-out)\n");
|
|
exit $ERRORS{"UNKNOWN"};
|
|
};
|
|
|
|
########## MAIN #######
|
|
|
|
my $nlib = Naglio->lib_init('plugin_name' => 'check_memcached.pl',
|
|
'plugins_authors' => 'William Leibzon',
|
|
'plugin_description' => 'Memcached Monitoring Plugin for Nagios',
|
|
'usage_function' => \&print_usage,
|
|
'enable_long_options' => 1,
|
|
'enable_rate_of_change' => 1);
|
|
$nlib->set_knownvars(\%KNOWN_STATUS_VARS, $PERF_OK_STATUS_REGEX);
|
|
|
|
check_options($nlib);
|
|
$nlib->verb("check_memcached.pl plugin version ".$Version);
|
|
|
|
# Check global timeout if plugin screws up
|
|
if (defined($TIMEOUT)) {
|
|
$nlib->verb("Alarm at $TIMEOUT");
|
|
alarm($TIMEOUT);
|
|
}
|
|
else {
|
|
$nlib->verb("no timeout defined : $o_timeout + 10");
|
|
alarm ($o_timeout+10);
|
|
}
|
|
|
|
my $sock = new IO::Socket::INET(
|
|
PeerAddr => $HOSTNAME,
|
|
PeerPort => $PORT,
|
|
Proto => 'tcp',
|
|
);
|
|
if (!$sock) {
|
|
print "CRITICAL ERROR - Can not connect to '$HOSTNAME' on port $PORT\n";
|
|
exit $ERRORS{'CRITICAL'};
|
|
}
|
|
close($sock);
|
|
|
|
my $start_time;
|
|
my $dsn = $HOSTNAME.":".$PORT;
|
|
$nlib->verb("connecting to $dsn");
|
|
$start_time = [ Time::HiRes::gettimeofday() ] if defined($o_timecheck);
|
|
$memd = new Cache::Memcached { 'servers' => [ $dsn ] };
|
|
|
|
if (!$memd) {
|
|
print "CRITICAL ERROR - Memcache error connecting to '$HOSTNAME' on port $PORT\n";
|
|
exit $ERRORS{'CRITICAL'};
|
|
}
|
|
|
|
# This returns hashref of various statistics data on memcached
|
|
# Basically results of 'stats', 'stats malloc', 'stats sizes', etc.
|
|
$nlib->verb("Requesting statistics on: ".join(',',@o_mdslist));
|
|
my $stats = $memd->stats(\@o_mdslist);
|
|
|
|
# some more variables for processing of the results
|
|
my $memdversion = "";
|
|
my $vstat;
|
|
my $vnam;
|
|
my $vval;
|
|
my $dnam;
|
|
my $avar;
|
|
|
|
# load all data into internal hash array
|
|
foreach $vstat (keys %{$stats->{'hosts'}{$dsn}}) {
|
|
$nlib->verb("Stats Data: vstat=$vstat reftype=".ref($stats->{'hosts'}{$dsn}{$vstat}));
|
|
if (defined($stats->{'hosts'}{$dsn}{$vstat})) {
|
|
if (ref($stats->{'hosts'}{$dsn}{$vstat}) eq 'HASH') {
|
|
foreach $vnam (keys %{$stats->{'hosts'}{$dsn}{$vstat}}) {
|
|
$vval = $stats->{'hosts'}{$dsn}{$vstat}{$vnam};
|
|
if (defined($vval)) {
|
|
$nlib->verb("Stats Data: $vstat($vnam) = $vval");
|
|
if (exists($KNOWN_STATUS_VARS{$vnam}) && $KNOWN_STATUS_VARS{$vnam}[1] eq 'VERSION') {
|
|
$memdversion = $vval;
|
|
}
|
|
else {
|
|
if ($vstat eq 'misc' || $vstat eq 'malloc') {
|
|
$dnam = $vnam;
|
|
}
|
|
else {
|
|
$dnam = $vstat.'_'.$vnam;
|
|
}
|
|
$nlib->add_data($dnam, $vval);
|
|
}
|
|
}
|
|
else {
|
|
$nlib->verb("Stats Data: $vstat($vnam) = NULL");
|
|
}
|
|
}
|
|
}
|
|
elsif ($stats->{'hosts'}{$dsn}{$vstat} =~ /ERROR/) {
|
|
$nlib->verb("Memcached Perl Library ERROR getting stats for $vstat");
|
|
}
|
|
else {
|
|
$vval = $stats->{'hosts'}{$dsn}{$vstat};
|
|
chop($vval);
|
|
my @lines = split("\n",$vval);
|
|
my $count=0;
|
|
foreach my $ln (@lines) {
|
|
$count++;
|
|
if ($ln =~ /STAT\s+(.*)\s+(\d+)/) {
|
|
$vval = $2;
|
|
$dnam = $1;
|
|
$dnam =~ s/\:/_/g;
|
|
$dnam = $vstat.'_'.$dnam if $dnam !~ /^$vstat/;
|
|
}
|
|
else {
|
|
$dnam = $vstat."_".$count;
|
|
$vval = $ln;
|
|
$vval =~ s/\s/_/g;
|
|
}
|
|
$nlib->verb("Stats Data: $vstat($dnam) = $vval");
|
|
$nlib->add_data($dnam, $vval);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$memd->disconnect_all;
|
|
|
|
# Response Time
|
|
if (defined($o_timecheck)) {
|
|
$nlib->add_data('response_time',Time::HiRes::tv_interval($start_time));
|
|
$nlib->addto_statusdata_output('response_time',sprintf("response in %.3fs",$nlib->vardata('response_time')));
|
|
if (defined($o_perf)) {
|
|
$nlib->set_perfdata('response_time','response_time='.$nlib->vardata('response_time'),'s');
|
|
}
|
|
}
|
|
|
|
# calculate rate variables
|
|
$nlib->calculate_ratevars();
|
|
|
|
# Memory Use Utilization
|
|
my $bytes = $nlib->vardata('bytes');
|
|
my $maxbytes = $nlib->vardata('limit_maxbytes');
|
|
my $utilization = 0;
|
|
if (defined($o_utilsize) && defined($bytes) && defined($maxbytes)) {
|
|
if (defined($maxbytes) && $maxbytes!=0) {
|
|
$utilization = $bytes / $maxbytes * 100;
|
|
}
|
|
$nlib->add_data('utilization',$utilization);
|
|
$nlib->addto_statusdata_output('utilization',sprintf(" in use %.2f%% of space", $utilization));
|
|
if (defined($o_perf)) {
|
|
$nlib->set_perfdata('utilization',sprintf("utilization=%.5f", $utilization), '%');
|
|
}
|
|
}
|
|
|
|
# CPU Use - Converts floating seconds to integer ms
|
|
if (defined($nlib->vardata('rusage_user'))) {
|
|
$nlib->add_data('rusage_user_ms',int($nlib->vardata('rusage_user')*100+0.5));
|
|
}
|
|
if (defined($nlib->vardata('rusage_system'))) {
|
|
$nlib->add_data('rusage_system_ms',int($nlib->vardata('rusage_system')*100+0.5));
|
|
}
|
|
|
|
# Hitrate
|
|
my $hits_total=0;
|
|
my $hitrate=0;
|
|
my $hitrate_all=0;
|
|
my $hits_hits = $nlib->vardata('get_hits');
|
|
my $get_misses = $nlib->vardata('get_misses');
|
|
if (defined($o_hitrate) && defined($get_misses) && defined($hits_hits)) {
|
|
if (defined($o_prevperf) && defined($o_perf)) {
|
|
$nlib->set_perfdata('get_misses','get_misses='.$get_misses,'c');
|
|
$nlib->set_perfdata('get_hits','get_hits='.$hits_hits,'c');
|
|
}
|
|
$hits_total = $hits_hits + $get_misses;
|
|
$nlib->verb("Calculating Hitrate : total=".$hits_total." hits=".$hits_hits);
|
|
if (defined($hits_hits) && defined($nlib->prev_perf('get_hits')) && defined($nlib->prev_perf('get_misses')) && $hits_hits > $nlib->prev_perf('get_hits')) {
|
|
$hitrate_all = $hits_hits/$hits_total*100 if $hits_total!=0;
|
|
$hits_hits -= $nlib->prev_perf('get_hits');
|
|
$hits_total -= $nlib->prev_perf('get_misses');
|
|
$hits_total -= $nlib->prev_perf('get_hits');
|
|
$nlib->verb("Calculating Hitrate. Adjusted based on previous values. total=".$hits_total." hits=".$hits_hits);
|
|
}
|
|
if (defined($hits_hits)) {
|
|
if ($hits_total!=0) {
|
|
$hitrate= sprintf("%.4f", $hits_hits/$hits_total*100);
|
|
}
|
|
$nlib->add_data('hitrate',$hitrate);
|
|
my $sdata .= sprintf(" hitrate is %.2f%%", $hitrate);
|
|
$sdata .= sprintf(" (%.2f%% from launch)", $hitrate_all) if ($hitrate_all!=0);
|
|
$nlib->addto_statusdata_output('hitrate',$sdata);
|
|
if (defined($o_perf)) {
|
|
$nlib->set_perfdata('hitrate',"hitrate=$hitrate",'%');
|
|
}
|
|
}
|
|
}
|
|
|
|
# Check thresholds in all variables and prepare status and performance data for output
|
|
$nlib->main_checkvars();
|
|
$nlib->main_perfvars();
|
|
|
|
# now output the results
|
|
print "MEMCACHE ";
|
|
print $nlib->statuscode() .': '. $nlib->statusinfo();
|
|
print " - " if $nlib->statusinfo();
|
|
# print "MEMCACHED " . $memdversion . ' on ' . $HOSTNAME. ':'. $PORT ' is '. $statuscode . $statusinfo;
|
|
print "memcached " . $memdversion . ' on ' . $HOSTNAME. ':'. $PORT;
|
|
print ', up '.$nlib->uptime_info($nlib->vardata('uptime')) if defined($nlib->vardata('uptime'));
|
|
print " - " . $nlib->statusdata() if $nlib->statusdata();
|
|
print $nlib->perfdata();
|
|
print "\n";
|
|
|
|
# end exit
|
|
exit $ERRORS{$nlib->statuscode()};
|