evobackup/client/zzz_evobackup

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#!/bin/bash
#
# Script Evobackup client
# See https://gitea.evolix.org/evolix/evobackup
#
# Authors: Evolix <info@evolix.fr>,
# Gregory Colpart <reg@evolix.fr>,
# Romain Dessort <rdessort@evolix.fr>,
# Benoit Série <bserie@evolix.fr>,
# Tristan Pilat <tpilat@evolix.fr>,
# Victor Laborie <vlaborie@evolix.fr>,
# Jérémy Lecour <jlecour@evolix.fr>
# and others.
#
# Licence: AGPLv3
#
# /!\ DON'T FORGET TO SET "MAIL" and "SERVERS" VARIABLES
##### Configuration ###################################################
VERSION="22.12"
# email adress for notifications
MAIL=jdoe@example.com
# list of hosts (hostname or IP) and SSH port for Rsync
SERVERS="node0.backup.example.com:2XXX node1.backup.example.com:2XXX"
# explicit PATH
PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/sbin:/usr/local/bin
# Should we fallback on other servers when the first one is unreachable?
SERVERS_FALLBACK=${SERVERS_FALLBACK:-1}
# timeout (in seconds) for SSH connections
SSH_CONNECT_TIMEOUT=${SSH_CONNECT_TIMEOUT:-90}
# We use /home/backup : feel free to use your own dir
LOCAL_BACKUP_DIR="/home/backup"
# You can set "linux" or "bsd" manually or let it choose automatically
SYSTEM=$(uname | tr '[:upper:]' '[:lower:]')
# Store pid in a file named after this program's name
PROGNAME=$(basename "$0")
PIDFILE="/var/run/${PROGNAME}.pid"
# Customize the log path if you have multiple scripts and with separate logs
LOGFILE="/var/log/evobackup.log"
# Full Rsync log file, reset each time
RSYNC_LOGFILE="/var/log/${PROGNAME}.rsync.log"
HOSTNAME=$(hostname)
DATE_FORMAT="%Y-%m-%d %H:%M:%S"
# Enable/disable local tasks (default: enabled)
: "${LOCAL_TASKS:=1}"
# Enable/disable sync tasks (default: enabled)
: "${SYNC_TASKS:=1}"
CANARY_FILE="/zzz_evobackup_canary"
# Source paths can be customized
# Empty lines, and lines containing # or ; are ignored
# NOTE: remember to single-quote paths if they contain globs (*)
# and you want to defer expansion
RSYNC_INCLUDES="
/etc
/root
/var
/home
"
# Excluded paths can be customized
# Empty lines, and lines beginning with # or ; are ignored
# NOTE: remember to single-quote paths if they contain globs (*)
# and you want to defer expansion
RSYNC_EXCLUDES="
/dev
/proc
/run
/sys
/tmp
/usr/doc
/usr/obj
/usr/share/doc
/usr/src
/var/apt
/var/cache
'/var/db/munin/*.tmp'
/var/lib/amavis/amavisd.sock
/var/lib/amavis/tmp
/var/lib/amavis/virusmails
'/var/lib/clamav/*.tmp'
/var/lib/elasticsearch
/var/lib/metche
/var/lib/mongodb
'/var/lib/munin/*tmp*'
/var/lib/mysql
/var/lib/php/sessions
/var/lib/php5
/var/lib/postgres
/var/lib/postgresql
/var/lib/sympa
/var/lock
/var/run
/var/spool/postfix
/var/spool/smtpd
/var/spool/squid
/var/state
/var/tmp
lost+found
'.nfs.*'
'lxc/*/rootfs/tmp'
'lxc/*/rootfs/usr/doc'
'lxc/*/rootfs/usr/obj'
'lxc/*/rootfs/usr/share/doc'
'lxc/*/rootfs/usr/src'
'lxc/*/rootfs/var/apt'
'lxc/*/rootfs/var/cache'
'lxc/*/rootfs/var/lib/php5'
'lxc/*/rootfs/var/lib/php/sessions'
'lxc/*/rootfs/var/lock'
'lxc/*/rootfs/var/run'
'lxc/*/rootfs/var/state'
'lxc/*/rootfs/var/tmp'
/home/mysqltmp
"
##### FUNCTIONS #######################################################
local_tasks() {
log "START LOCAL_TASKS"
# You can comment or uncomment sections below to customize the backup
## OpenLDAP : example with slapcat
# slapcat -n 0 -l ${LOCAL_BACKUP_DIR}/config.ldap.bak
# slapcat -n 1 -l ${LOCAL_BACKUP_DIR}/data.ldap.bak
# slapcat -l ${LOCAL_BACKUP_DIR}/ldap.bak
## MySQL
## Purge previous dumps
# rm -f ${LOCAL_BACKUP_DIR}/mysql.*.gz
# rm -rf ${LOCAL_BACKUP_DIR}/mysql
# rm -rf ${LOCAL_BACKUP_DIR}/mysqlhotcopy
# rm -rf /home/mysqldump
# find ${LOCAL_BACKUP_DIR}/ -type f -name '*.err' -delete
## example with global and compressed mysqldump
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 \
# --opt --all-databases --force --events --hex-blob 2> ${LOCAL_BACKUP_DIR}/mysql.bak.err | gzip --best > ${LOCAL_BACKUP_DIR}/mysql.bak.gz
# last_rc=$?
# if [ ${last_rc} -ne 0 ]; then
# error "mysqldump (global compressed) returned an error ${last_rc}, check ${LOCAL_BACKUP_DIR}/mysql.bak.err"
# rc=101
# fi
## example with compressed SQL dump (with data) for each databases
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/
# for i in $(mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 -e 'show databases' -s --skip-column-names \
# | grep --extended-regexp --invert-match "^(Database|information_schema|performance_schema|sys)"); do
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 --events --hex-blob $i 2> ${LOCAL_BACKUP_DIR}/${i}.err | gzip --best > ${LOCAL_BACKUP_DIR}/mysql/${i}.sql.gz
# last_rc=$?
# if [ ${last_rc} -ne 0 ]; then
# error "mysqldump (${i} compressed) returned an error ${last_rc}, check ${LOCAL_BACKUP_DIR}/${i}.err"
# rc=102
# fi
# done
## Dump all grants (requires 'percona-toolkit' package)
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/
# pt-show-grants --flush --no-header 2> ${LOCAL_BACKUP_DIR}/mysql/all_grants.err > ${LOCAL_BACKUP_DIR}/mysql/all_grants.sql
# last_rc=$?
# if [ ${last_rc} -ne 0 ]; then
# error "pt-show-grants returned an error ${last_rc}, check ${LOCAL_BACKUP_DIR}/mysql/all_grants.err"
# rc=103
# fi
# Dump all variables
# mysql -A -e"SHOW GLOBAL VARIABLES;" 2> ${LOCAL_BACKUP_DIR}/MySQLCurrentSettings.err > ${LOCAL_BACKUP_DIR}/MySQLCurrentSettings.txt
# last_rc=$?
# if [ ${last_rc} -ne 0 ]; then
# error "mysql (variables) returned an error ${last_rc}, check ${LOCAL_BACKUP_DIR}/MySQLCurrentSettings.err"
# rc=104
# fi
## example with SQL dump (schema only, no data) for each databases
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/
# for i in $(mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 -e 'show databases' -s --skip-column-names \
# | grep --extended-regexp --invert-match "^(Database|information_schema|performance_schema|sys)"); do
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 --no-data --databases $i 2> ${LOCAL_BACKUP_DIR}/${i}.schema.err > ${LOCAL_BACKUP_DIR}/mysql/${i}.schema.sql
# last_rc=$?
# if [ ${last_rc} -ne 0 ]; then
# error "mysqldump (${i} schema) returned an error ${last_rc}, check ${LOCAL_BACKUP_DIR}/${i}.schema.err"
# rc=105
# fi
# done
## example with *one* uncompressed SQL dump for *one* database (MYBASE)
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/MYBASE
# chown -RL mysql ${LOCAL_BACKUP_DIR}/mysql/
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -Q \
# --opt --events --hex-blob --skip-comments -T ${LOCAL_BACKUP_DIR}/mysql/MYBASE MYBASE 2> ${LOCAL_BACKUP_DIR}/mysql/MYBASE.err
# last_rc=$?
# if [ ${last_rc} -ne 0 ]; then
# error "mysqldump (MYBASE) returned an error ${last_rc}, check ${LOCAL_BACKUP_DIR}/mysql/MYBASE.err"
# rc=106
# fi
## example with two dumps for each table (.sql/.txt) for all databases
# for i in $(echo SHOW DATABASES | mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 \
# | grep --extended-regexp --invert-match "^(Database|information_schema|performance_schema|sys)" ); do
# mkdir -p -m 700 /home/mysqldump/$i ; chown -RL mysql /home/mysqldump
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 -Q --opt --events --hex-blob --skip-comments \
# --fields-enclosed-by='\"' --fields-terminated-by=',' -T /home/mysqldump/$i $i 2> /home/mysqldump/$i.err"
# last_rc=$?
# if [ ${last_rc} -ne 0 ]; then
# error "mysqldump (${i} files) returned an error ${last_rc}, check /home/mysqldump/$i.err"
# rc=107
# fi
# done
## example with mysqlhotcopy
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysqlhotcopy/
# mysqlhotcopy MYBASE ${LOCAL_BACKUP_DIR}/mysqlhotcopy/ 2> ${LOCAL_BACKUP_DIR}/mysqlhotcopy/MYBASE.err
# last_rc=$?
# if [ ${last_rc} -ne 0 ]; then
# error "mysqlhotcopy returned an error ${last_rc}, check ${LOCAL_BACKUP_DIR}/mysqlhotcopy/MYBASE.err"
# rc=108
# fi
## example for multiples MySQL instances
# mysqladminpasswd=$(grep -m1 'password = .*' /root/.my.cnf|cut -d" " -f3)
# grep --extended-regexp "^port\s*=\s*\d*" /etc/mysql/my.cnf | while read instance; do
# instance=$(echo "$instance"|awk '{ print $3 }')
# if [ "$instance" != "3306" ]
# then
# mysqldump -P $instance --opt --all-databases --hex-blob -u mysqladmin -p$mysqladminpasswd 2> ${LOCAL_BACKUP_DIR}/mysql.${instance}.err | gzip --best > ${LOCAL_BACKUP_DIR}/mysql.${instance}.bak.gz
# last_rc=$?
# if [ ${last_rc} -ne 0 ]; then
# error "mysqldump (instance ${instance}) returned an error ${last_rc}, check ${LOCAL_BACKUP_DIR}/mysql.${instance}.err"
# rc=107
# fi
# fi
# done
## PostgreSQL
## Purge previous dumps
# rm -rf ${LOCAL_BACKUP_DIR}/pg.*.gz
# rm -rf ${LOCAL_BACKUP_DIR}/pg-backup.tar
# rm -rf ${LOCAL_BACKUP_DIR}/postgresql/*
## example with pg_dumpall (warning: you need space in ~postgres)
# su - postgres -c "pg_dumpall > ~/pg.dump.bak"
# mv ~postgres/pg.dump.bak ${LOCAL_BACKUP_DIR}/
## another method with gzip directly piped
# (
# cd /var/lib/postgresql;
# sudo -u postgres pg_dumpall | gzip > ${LOCAL_BACKUP_DIR}/pg.dump.bak.gz
# )
## example with all tables from MYBASE excepts TABLE1 and TABLE2
# pg_dump -p 5432 -h 127.0.0.1 -U USER --clean -F t --inserts -f ${LOCAL_BACKUP_DIR}/pg-backup.tar -t 'TABLE1' -t 'TABLE2' MYBASE
## example with only TABLE1 and TABLE2 from MYBASE
# pg_dump -p 5432 -h 127.0.0.1 -U USER --clean -F t --inserts -f ${LOCAL_BACKUP_DIR}/pg-backup.tar -T 'TABLE1' -T 'TABLE2' MYBASE
## example with compressed PostgreSQL dump for each databases
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/postgresql
# chown postgres:postgres ${LOCAL_BACKUP_DIR}/postgresql
# (
# cd /var/lib/postgresql
# dbs=$(sudo -u postgres psql -U postgres -lt | awk -F\| '{print $1}' |grep -v template*)
# for databases in $dbs ; do sudo -u postgres /usr/bin/pg_dump --create -U postgres -d $databases | gzip --best -c > ${LOCAL_BACKUP_DIR}/postgresql/$databases.sql.gz ; done
# )
## MongoDB
## don't forget to create use with read-only access
## > use admin
## > db.createUser( { user: "mongobackup", pwd: "PASS", roles: [ "backup", ] } )
## Purge previous dumps
# rm -rf ${LOCAL_BACKUP_DIR}/mongodump/
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mongodump/
# mongodump --quiet -u mongobackup -pPASS -o ${LOCAL_BACKUP_DIR}/mongodump/
# if [ $? -ne 0 ]; then
# echo "Error with mongodump!"
# fi
## Redis
## Purge previous dumps
# rm -rf ${LOCAL_BACKUP_DIR}/redis/
# rm -rf ${LOCAL_BACKUP_DIR}/redis-*
## Copy dump.rdb file for each found instance
# for instance in $(find /var/lib/ -mindepth 1 -maxdepth 1 '(' -type d -o -type l ')' -name 'redis*'); do
# if [ -f "${instance}/dump.rdb" ]; then
# name=$(basename $instance)
# mkdir -p ${LOCAL_BACKUP_DIR}/${name}
# cp -a "${instance}/dump.rdb" "${LOCAL_BACKUP_DIR}/${name}"
# gzip "${LOCAL_BACKUP_DIR}/${name}/dump.rdb"
# fi
# done
## ElasticSearch
## Take a snapshot as a backup.
## Warning: You need to have a path.repo configured.
## See: https://wiki.evolix.org/HowtoElasticsearch#snapshots-et-sauvegardes
# curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/snapshot.daily" >> "${LOGFILE}"
# curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot.daily?wait_for_completion=true" >> "${LOGFILE}"
## Clustered version here
## It basically the same thing except that you need to check that NFS is mounted
# if ss | grep ':nfs' | grep -q 'ip\.add\.res\.s1' && ss | grep ':nfs' | grep -q 'ip\.add\.res\.s2'
# then
# curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/snapshot.daily" >> "${LOGFILE}"
# curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot.daily?wait_for_completion=true" >> "${LOGFILE}"
# else
# echo 'Cannot make a snapshot of elasticsearch, at least one node is not mounting the repository.'
# fi
## If you need to keep older snapshot, for example the last 10 daily snapshots, replace the XDELETE and XPUT lines by :
# for snapshot in $(curl -s -XGET "localhost:9200/_snapshot/snaprepo/_all?pretty=true" | grep -Eo 'snapshot_[0-9]{4}-[0-9]{2}-[0-9]{2}' | head -n -10); do
# curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/${snapshot}" | grep -v -Fx '{"acknowledged":true}'
# done
# date=$(/bin/date +%F)
# curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot_${date}?wait_for_completion=true" >> "${LOGFILE}"
## RabbitMQ
## export config
# rabbitmqadmin export ${LOCAL_BACKUP_DIR}/rabbitmq.config >> "${LOGFILE}"
## MegaCli config
# megacli -CfgSave -f ${LOCAL_BACKUP_DIR}/megacli_conf.dump -a0 >/dev/null
## Dump network routes with mtr and traceroute (warning: could be long with aggressive firewalls)
network_targets="8.8.8.8 www.evolix.fr travaux.evolix.net"
mtr_bin=$(command -v mtr)
if [ -n "${mtr_bin}" ]; then
for addr in ${network_targets}; do
${mtr_bin} -r "${addr}" > "${LOCAL_BACKUP_DIR}/mtr-${addr}"
done
fi
traceroute_bin=$(command -v traceroute)
if [ -n "${traceroute_bin}" ]; then
for addr in ${network_targets}; do
${traceroute_bin} -n "${addr}" > "${LOCAL_BACKUP_DIR}/traceroute-${addr}" 2>&1
done
fi
server_state_dir="${LOCAL_BACKUP_DIR}/server-state"
dump_server_state_bin=$(command -v dump-server-state)
if [ -z "${dump_server_state_bin}" ]; then
error "dump-server-state is missing"
rc=1
else
if [ "${SYSTEM}" = "linux" ]; then
${dump_server_state_bin} --all --force --dump-dir "${server_state_dir}"
last_rc=$?
if [ ${last_rc} -ne 0 ]; then
error "dump-server-state returned an error ${last_rc}, check ${server_state_dir}"
rc=1
fi
else
${dump_server_state_bin} --all --force --dump-dir "${server_state_dir}"
last_rc=$?
if [ ${last_rc} -ne 0 ]; then
error "dump-server-state returned an error ${last_rc}, check ${server_state_dir}"
rc=1
fi
fi
fi
## Dump rights
# getfacl -R /var > ${server_state_dir}/rights-var.txt
# getfacl -R /etc > ${server_state_dir}/rights-etc.txt
# getfacl -R /usr > ${server_state_dir}/rights-usr.txt
# getfacl -R /home > ${server_state_dir}/rights-home.txt
log "STOP LOCAL_TASKS"
}
build_rsync_main_cmd() {
###################################################################
# /!\ WARNING /!\ WARNING /!\ WARNING /!\ WARNING /!\ WARNING /!\ #
###################################################################
# DO NOT USE COMMENTS in rsync lines #
# DO NOT ADD WHITESPACES AFTER \ in rsync lines #
# It breaks the command and destroys data #
# You should not modify this, unless you are really REALLY sure #
###################################################################
# Create a temp file for excludes and includes
includes_file="$(mktemp "${PROGNAME}.includes.XXXXXX")"
excludes_file="$(mktemp "${PROGNAME}.excludes.XXXXXX")"
# … and add them to the list of files to delete at exit
temp_files="${temp_files} ${includes_file} ${excludes_file}"
# Store includes/excludes in files
# without blank lines of comments (# or ;)
echo "${RSYNC_INCLUDES}" | sed -e 's/\s*\(#\|;\).*//; /^\s*$/d' > "${includes_file}"
echo "${RSYNC_EXCLUDES}" | sed -e 's/\s*\(#\|;\).*//; /^\s*$/d' > "${excludes_file}"
# Rsync command
cmd="$(command -v rsync)"
# Rsync main options
cmd="${cmd} --archive"
cmd="${cmd} --itemize-changes"
cmd="${cmd} --quiet"
cmd="${cmd} --stats"
cmd="${cmd} --human-readable"
cmd="${cmd} --relative"
cmd="${cmd} --partial"
cmd="${cmd} --delete"
cmd="${cmd} --delete-excluded"
cmd="${cmd} --force"
cmd="${cmd} --ignore-errors"
cmd="${cmd} --log-file=${RSYNC_LOGFILE}"
cmd="${cmd} --rsh='ssh -p ${SSH_PORT} -o \"ConnectTimeout ${SSH_CONNECT_TIMEOUT}\"'"
# Rsync excludes
while read line ; do
cmd="${cmd} --exclude ${line}"
done < "${excludes_file}"
# Rsync local sources
cmd="${cmd} ${default_includes}"
while read line ; do
cmd="${cmd} ${line}"
done < "${includes_file}"
# Rsync remote destination
cmd="${cmd} root@${SSH_SERVER}:/var/backup/"
# output final command
echo "${cmd}"
}
build_rsync_canary_cmd() {
# Rsync command
cmd="$(command -v rsync)"
# Rsync options
cmd="${cmd} --rsh='ssh -p ${SSH_PORT} -o \"ConnectTimeout ${SSH_CONNECT_TIMEOUT}\"'"
# Rsync local source
cmd="${cmd} ${CANARY_FILE}"
# Rsync remote destination
cmd="${cmd} root@${SSH_SERVER}:/var/backup/"
# output final command
echo "${cmd}"
}
sync_tasks() {
n=0
server=""
if [ "${SERVERS_FALLBACK}" = "1" ]; then
# We try to find a suitable server
while :; do
server=$(pick_server "${n}")
test $? = 0 || exit 2
if test_server "${server}"; then
break
else
server=""
n=$(( n + 1 ))
fi
done
else
# we force the server
server=$(pick_server "${n}")
fi
SSH_SERVER=$(echo "${server}" | cut -d':' -f1)
SSH_PORT=$(echo "${server}" | cut -d':' -f2)
log "START SYNC_TASKS - server=${server}"
# default paths, depending on system
if [ "${SYSTEM}" = "linux" ]; then
default_includes="/bin /boot /lib /opt /sbin /usr"
else
default_includes="/bsd /bin /sbin /usr"
fi
# reset Rsync log file
if [ -n "$(command -v truncate)" ]; then
truncate -s 0 "${RSYNC_LOGFILE}"
else
printf "" > "${RSYNC_LOGFILE}"
fi
# Build the final Rsync command
rsync_main_cmd=$(build_rsync_main_cmd)
# … log it
log "SYNC_TASKS - Rsync main command : ${rsync_main_cmd}"
# … execute it
eval "${rsync_main_cmd}"
rsync_main_rc=$?
# Copy last lines of rsync log to the main log
tail -n 30 "${RSYNC_LOGFILE}" >> "${LOGFILE}"
if [ ${rsync_main_rc} -ne 0 ]; then
error "rsync returned an error ${rsync_main_rc}, check ${LOGFILE}"
rc=201
else
# Build the canary Rsync command
rsync_canary_cmd=$(build_rsync_canary_cmd)
# … log it
log "SYNC_TASKS - Rsync canary command : ${rsync_canary_cmd}"
# … execute it
eval "${rsync_canary_cmd}"
fi
log "STOP SYNC_TASKS - server=${server}"
}
# Call test_server with "HOST:PORT" string
# It will return with 0 if the server is reachable.
# It will return with 1 and a message on stderr if not.
test_server() {
item=$1
# split HOST and PORT from the input string
host=$(echo "${item}" | cut -d':' -f1)
port=$(echo "${item}" | cut -d':' -f2)
# Test if the server is accepting connections
ssh -q -o "ConnectTimeout ${SSH_CONNECT_TIMEOUT}" "${host}" -p "${port}" -t "exit"
# shellcheck disable=SC2181
if [ $? = 0 ]; then
# SSH connection is OK
return 0
else
# SSH connection failed
new_error=$(printf "Failed to connect to \`%s' within %s seconds" "${item}" "${SSH_CONNECT_TIMEOUT}")
log "${new_error}"
SERVERS_SSH_ERRORS=$(printf "%s\\n%s" "${SERVERS_SSH_ERRORS}" "${new_error}" | sed -e '/^$/d')
return 1
fi
}
# Call pick_server with an optional positive integer to get the nth server in the list.
pick_server() {
increment=${1:-0}
list_length=$(echo "${SERVERS}" | wc -w)
if [ "${increment}" -ge "${list_length}" ]; then
# We've reached the end of the list
new_error="No more server available"
log "${new_error}"
SERVERS_SSH_ERRORS=$(printf "%s\\n%s" "${SERVERS_SSH_ERRORS}" "${new_error}" | sed -e '/^$/d')
# Log errors to stderr
printf "%s\\n" "${SERVERS_SSH_ERRORS}" >&2
return 1
fi
# Extract the day of month, without leading 0 (which would give an octal based number)
today=$(/bin/date +%e)
# A salt is useful to randomize the starting point in the list
# but stay identical each time it's called for a server (based on hostname).
salt=$(hostname | cksum | cut -d' ' -f1)
# Pick an integer between 0 and the length of the SERVERS list
# It changes each day
item=$(( (today + salt + increment) % list_length ))
# cut starts counting fields at 1, not 0.
field=$(( item + 1 ))
echo "${SERVERS}" | cut -d' ' -f${field}
}
log() {
msg="${1:-$(cat /dev/stdin)}"
pid=$$
printf "[%s] %s[%s]: %s\\n" \
"$(/bin/date +"${DATE_FORMAT}")" "${PROGNAME}" "${pid}" "${msg}" \
>> "${LOGFILE}"
}
error() {
msg="${1:-$(cat /dev/stdin)}"
pid=$$
printf "[%s] %s[%s]: %s\\n" \
"$(/bin/date +"${DATE_FORMAT}")" "${PROGNAME}" "${pid}" "${msg}" \
>&2
}
main() {
START_EPOCH=$(/bin/date +%s)
log "START GLOBAL - VERSION=${VERSION} LOCAL_TASKS=${LOCAL_TASKS} SYNC_TASKS=${SYNC_TASKS}"
# shellcheck disable=SC2174
mkdir -p -m 700 ${LOCAL_BACKUP_DIR}
## Force umask
umask 077
## Initialize variable to store SSH connection errors
SERVERS_SSH_ERRORS=""
## Verify other evobackup process and kill if needed
if [ -e "${PIDFILE}" ]; then
pid=$(cat "${PIDFILE}")
# Does process still exist ?
if kill -0 "${pid}" 2> /dev/null; then
# Killing the childs of evobackup.
for ppid in $(pgrep -P "${pid}"); do
kill -9 "${ppid}";
done
# Then kill the main PID.
kill -9 "${pid}"
printf "%s is still running (PID %s). Process has been killed" "$0" "${pid}\\n" >&2
else
rm -f "${PIDFILE}"
fi
fi
echo "$$" > "${PIDFILE}"
# Initialize a list of files to delete at exit
# Any file added to the list will also be deleted at exit
temp_files="${PIDFILE}"
# shellcheck disable=SC2064
trap "rm -f ${temp_files}" EXIT
# Update canary to keep track of each run
update-evobackup-canary --who "${PROGNAME}"
if [ "${LOCAL_TASKS}" = "1" ]; then
local_tasks
fi
if [ "${SYNC_TASKS}" = "1" ]; then
sync_tasks
fi
STOP_EPOCH=$(/bin/date +%s)
if [ "${SYSTEM}" = "openbsd" ]; then
start_time=$(/bin/date -f "%s" -j "${START_EPOCH}" +"${DATE_FORMAT}")
stop_time=$(/bin/date -f "%s" -j "${STOP_EPOCH}" +"${DATE_FORMAT}")
else
start_time=$(/bin/date --date="@${START_EPOCH}" +"${DATE_FORMAT}")
stop_time=$(/bin/date --date="@${STOP_EPOCH}" +"${DATE_FORMAT}")
fi
duration=$(( STOP_EPOCH - START_EPOCH ))
log "STOP GLOBAL - start='${start_time}' stop='${stop_time}' duration=${duration}s"
tail -20 "${LOGFILE}" | mail -s "[info] EvoBackup - Client ${HOSTNAME}" ${MAIL}
}
# set all programs to C language (english)
export LC_ALL=C
# Error on unassigned variable
set -u
# Default return-code (0 == succes)
rc=0
# execute main funciton
main
exit ${rc}