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Update http mysqlchk

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vlaborie 2018-10-02 11:15:50 +02:00
parent 10cfdf8608
commit c5cadadeeb
1 changed files with 17 additions and 39 deletions
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HowtoHaproxy.md
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@ -310,48 +310,26 @@ mysqlchk 8306/tcp # mysqlchk
On crée le script à exécuter dans `/root/mysqlchk` (droits: root:root 0750) :
~~~{.bash}
#!/bin/bash
# Créer un utilisateur limité pour ces checks :
# mysql> CREATE USER 'mysqlchk'@'localhost' IDENTIFIED BY 'PASSWORD';
# mysql> GRANT SHOW DATABASES ON *.* TO 'mysqlchk'@'localhost';
MYSQL_HOST="127.0.0.1"
MYSQL_PORT="3306"
MYSQL_USERNAME="mysqlchk"
MYSQL_PASSWORD="PASSWORD"
TMP_FILE="/tmp/mysqlchk.out"
ERR_FILE="/tmp/mysqlchk.err"
/usr/bin/mysql --host=$MYSQL_HOST --port=$MYSQL_PORT --user=$MYSQL_USERNAME \
--password=$MYSQL_PASSWORD -e"show databases;" > $TMP_FILE 2> $ERR_FILE
uptime=`cat /proc/uptime | cut -f 1 -d .`
if [ "$(/bin/cat $TMP_FILE)" != "" ] && ( /root/nrpe-check-mysql-slave.sh >/dev/null || [ $uptime -gt 3600 ] ); then
# mysql is fine, return http 200
/bin/echo -e "HTTP/1.1 200 OK\r\n"
/bin/echo -e "Content-Type: Content-Type: text/plain\r\n"
/bin/echo -e "\r\n"
/bin/echo -e "MySQL is running.\r\n"
/bin/echo -e "\r\n"
else
# mysql is fine, return http 503
/bin/echo -e "HTTP/1.1 503 Service Unavailable\r\n"
/bin/echo -e "Content-Type: Content-Type: text/plain\r\n"
/bin/echo -e "\r\n"
/bin/echo -e "MySQL is *down*.\r\n"
/bin/echo -e "\r\n"
fi
~~~
Puis le script de check mysql lui-même, par exemple `/root/nrpe-check-mysql-slave.sh` (droits: root:root 0750) :
~~~{.bash}
#!/bin/sh
exec /usr/lib/nagios/plugins/check_mysql -f /etc/mysql/debian.cnf --check-slave -w 5 -c 60
# Mysql is down, return a 503
return="503 Service Unavailable"
# Mysql is fine, return a 200
/usr/lib/nagios/plugins/check_mysql -f /etc/mysql/debian.cnf >/dev/null && return="200 OK"
# Mysql is up but replication is not ok, return a 404
# You may want to comment this line in master/master mode
# It disable server (NOLB status) when replication is down or lagging
/usr/lib/nagios/plugins/check_mysql -f /etc/mysql/debian.cnf --check-slave -c 60 >/dev/null || return="404 OK"
cat <<EOF
HTTP/1.0 ${return}
Content-Type: Content-Type: text/plain
Content-Length: 0
EOF
~~~
On redémarre xinetd (surveiller `/var/log/syslog` pour d'éventuelles erreurs) et on pense à autoriser le port 8306 au niveau firewall depuis les IP concernées.