mirror of
https://github.com/mailcow/mailcow-dockerized.git
synced 2024-12-15 09:00:26 +08:00
[Watchdog] Add WATCHDOG_MYSQL_REPLICATION_CHECKS, minor fix
This commit is contained in:
parent
92f8b4a091
commit
20c29f8204
data/Dockerfiles/watchdog
@ -34,5 +34,6 @@ RUN apk add --update \
|
||||
&& chmod +x smtp-cli
|
||||
|
||||
COPY watchdog.sh /watchdog.sh
|
||||
COPY check_mysql_slavestatus.sh /usr/lib/nagios/plugins/check_mysql_slavestatus.sh
|
||||
|
||||
CMD /watchdog.sh 2> /dev/null
|
||||
|
223
data/Dockerfiles/watchdog/check_mysql_slavestatus.sh
Executable file
223
data/Dockerfiles/watchdog/check_mysql_slavestatus.sh
Executable file
@ -0,0 +1,223 @@
|
||||
#!/bin/bash
|
||||
#########################################################################
|
||||
# Script: check_mysql_slavestatus.sh #
|
||||
# Author: Claudio Kuenzler www.claudiokuenzler.com #
|
||||
# Purpose: Monitor MySQL Replication status with Nagios #
|
||||
# Description: Connects to given MySQL hosts and checks for running #
|
||||
# SLAVE state and delivers additional info #
|
||||
# Original: This script is a modified version of #
|
||||
# check mysql slave sql running written by dhirajt #
|
||||
# Thanks to: Victor Balada Diaz for his ideas added on 20080930 #
|
||||
# Soren Klintrup for stuff added on 20081015 #
|
||||
# Marc Feret for Slave_IO_Running check 20111227 #
|
||||
# Peter Lecki for his mods added on 20120803 #
|
||||
# Serge Victor for his mods added on 20131223 #
|
||||
# Omri Bahumi for his fix added on 20131230 #
|
||||
# Marc Falzon for his option mods added on 20190822 #
|
||||
# Andreas Pfeiffer for adding socket option on 20190822 #
|
||||
# History: #
|
||||
# 2008041700 Original Script modified #
|
||||
# 2008041701 Added additional info if status OK #
|
||||
# 2008041702 Added usage of script with params -H -u -p #
|
||||
# 2008041703 Added bindir variable for multiple platforms #
|
||||
# 2008041704 Added help because mankind needs help #
|
||||
# 2008093000 Using /bin/sh instead of /bin/bash #
|
||||
# 2008093001 Added port for MySQL server #
|
||||
# 2008093002 Added mysqldir if mysql binary is elsewhere #
|
||||
# 2008101501 Changed bindir/mysqldir to use PATH #
|
||||
# 2008101501 Use $() instead of `` to avoid forks #
|
||||
# 2008101501 Use ${} for variables to prevent problems #
|
||||
# 2008101501 Check if required commands exist #
|
||||
# 2008101501 Check if mysql connection works #
|
||||
# 2008101501 Exit with unknown status at script end #
|
||||
# 2008101501 Also display help if no option is given #
|
||||
# 2008101501 Add warning/critical check to delay #
|
||||
# 2011062200 Add perfdata #
|
||||
# 2011122700 Checking Slave_IO_Running #
|
||||
# 2012080300 Changed to use only one mysql query #
|
||||
# 2012080301 Added warn and crit delay as optional args #
|
||||
# 2012080302 Added standard -h option for syntax help #
|
||||
# 2012080303 Added check for mandatory options passed in #
|
||||
# 2012080304 Added error output from mysql #
|
||||
# 2012080305 Changed from 'cut' to 'awk' (eliminate ws) #
|
||||
# 2012111600 Do not show password in error output #
|
||||
# 2013042800 Changed PATH to use existing PATH, too #
|
||||
# 2013050800 Bugfix in PATH export #
|
||||
# 2013092700 Bugfix in PATH export #
|
||||
# 2013092701 Bugfix in getopts #
|
||||
# 2013101600 Rewrite of threshold logic and handling #
|
||||
# 2013101601 Optical clean up #
|
||||
# 2013101602 Rewrite help output #
|
||||
# 2013101700 Handle Slave IO in 'Connecting' state #
|
||||
# 2013101701 Minor changes in output, handling UNKWNON situations now #
|
||||
# 2013101702 Exit CRITICAL when Slave IO in Connecting state #
|
||||
# 2013123000 Slave_SQL_Running also matched Slave_SQL_Running_State #
|
||||
# 2015011600 Added 'moving' check to catch possible connection issues #
|
||||
# 2015011900 Use its own threshold for replication moving check #
|
||||
# 2019082200 Add support for mysql option file #
|
||||
# 2019082201 Improve password security (remove from mysql cli) #
|
||||
# 2019082202 Added socket parameter (-S) #
|
||||
# 2019082203 Use default port 3306, makes -P optional #
|
||||
# 2019082204 Fix moving subcheck, improve documentation #
|
||||
#########################################################################
|
||||
# Usage: ./check_mysql_slavestatus.sh (-o file|(-H dbhost [-P port]|-S socket) -u dbuser -p dbpass) [-s connection] [-w integer] [-c integer] [-m integer]
|
||||
#########################################################################
|
||||
help="\ncheck_mysql_slavestatus.sh (c) 2008-2019 GNU GPLv2 licence
|
||||
Usage: $0 (-o file|(-H dbhost [-P port]|-S socket) -u username -p password) [-s connection] [-w integer] [-c integer] [-m]\n
|
||||
Options:\n-o Path to option file containing connection settings (e.g. /home/nagios/.my.cnf). Note: If this option is used, -H, -u, -p parameters will become optional\n-H Hostname or IP of slave server\n-P MySQL Port of slave server (optional, defaults to 3306)\n-u Username of DB-user\n-p Password of DB-user\n-S database socket\n-s Connection name (optional, with multi-source replication)\n-w Replication delay in seconds for Warning status (optional)\n-c Replication delay in seconds for Critical status (optional)\n-m Threshold in seconds since when replication did not move (compares the slaves log position)\n
|
||||
Attention: The DB-user you type in must have CLIENT REPLICATION rights on the DB-server. Example:\n\tGRANT REPLICATION CLIENT on *.* TO 'nagios'@'%' IDENTIFIED BY 'secret';"
|
||||
|
||||
STATE_OK=0 # define the exit code if status is OK
|
||||
STATE_WARNING=1 # define the exit code if status is Warning (not really used)
|
||||
STATE_CRITICAL=2 # define the exit code if status is Critical
|
||||
STATE_UNKNOWN=3 # define the exit code if status is Unknown
|
||||
export PATH=$PATH:/usr/local/bin:/usr/bin:/bin # Set path
|
||||
crit="No" # what is the answer of MySQL Slave_SQL_Running for a Critical status?
|
||||
ok="Yes" # what is the answer of MySQL Slave_SQL_Running for an OK status?
|
||||
port="-P 3306" # on which tcp port is the target MySQL slave listening?
|
||||
|
||||
for cmd in mysql awk grep expr [
|
||||
do
|
||||
if ! `which ${cmd} &>/dev/null`
|
||||
then
|
||||
echo "UNKNOWN: This script requires the command '${cmd}' but it does not exist; please check if command exists and PATH is correct"
|
||||
exit ${STATE_UNKNOWN}
|
||||
fi
|
||||
done
|
||||
|
||||
# Check for people who need help
|
||||
#########################################################################
|
||||
if [ "${1}" = "--help" -o "${#}" = "0" ];
|
||||
then
|
||||
echo -e "${help}";
|
||||
exit 1;
|
||||
fi
|
||||
|
||||
# Important given variables for the DB-Connect
|
||||
#########################################################################
|
||||
while getopts "H:P:u:p:S:s:w:c:o:m:h" Input;
|
||||
do
|
||||
case ${Input} in
|
||||
H) host="-h ${OPTARG}";slavetarget=${OPTARG};;
|
||||
P) port="-P ${OPTARG}";;
|
||||
u) user="-u ${OPTARG}";;
|
||||
p) password="${OPTARG}"; export MYSQL_PWD="${OPTARG}";;
|
||||
S) socket="-S ${OPTARG}";;
|
||||
s) connection=\"${OPTARG}\";;
|
||||
w) warn_delay=${OPTARG};;
|
||||
c) crit_delay=${OPTARG};;
|
||||
o) optfile="--defaults-extra-file=${OPTARG}";;
|
||||
m) moving=${OPTARG};;
|
||||
h) echo -e "${help}"; exit 1;;
|
||||
\?) echo "Wrong option given. Check help (-h, --help) for usage."
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
done
|
||||
|
||||
# Check if we can write to tmp
|
||||
#########################################################################
|
||||
test -w /tmp && tmpfile="/tmp/mysql_slave_${slavetarget}_pos.txt"
|
||||
|
||||
# Connect to the DB server and check for informations
|
||||
#########################################################################
|
||||
# Check whether all required arguments were passed in (either option file or full connection settings)
|
||||
if [[ -z "${optfile}" && -z "${host}" && -z "${socket}" ]]; then
|
||||
echo -e "Missing required parameter(s)"; exit ${STATE_UNKNOWN}
|
||||
elif [[ -n "${host}" && (-z "${user}" || -z "${password}") ]]; then
|
||||
echo -e "Missing required parameter(s)"; exit ${STATE_UNKNOWN}
|
||||
elif [[ -n "${socket}" && (-z "${user}" || -z "${password}") ]]; then
|
||||
echo -e "Missing required parameter(s)"; exit ${STATE_UNKNOWN}
|
||||
fi
|
||||
|
||||
# Connect to the DB server and store output in vars
|
||||
if [[ -n $socket ]]; then
|
||||
ConnectionResult=$(mysql ${optfile} ${socket} ${user} -e "show slave ${connection} status\G" 2>&1)
|
||||
else
|
||||
ConnectionResult=$(mysql ${optfile} ${host} ${port} ${user} -e "show slave ${connection} status\G" 2>&1)
|
||||
fi
|
||||
|
||||
if [ -z "`echo "${ConnectionResult}" |grep Slave_IO_State`" ]; then
|
||||
echo -e "CRITICAL: Unable to connect to server"
|
||||
exit ${STATE_CRITICAL}
|
||||
fi
|
||||
check=`echo "${ConnectionResult}" |grep Slave_SQL_Running: | awk '{print $2}'`
|
||||
checkio=`echo "${ConnectionResult}" |grep Slave_IO_Running: | awk '{print $2}'`
|
||||
masterinfo=`echo "${ConnectionResult}" |grep Master_Host: | awk '{print $2}'`
|
||||
delayinfo=`echo "${ConnectionResult}" |grep Seconds_Behind_Master: | awk '{print $2}'`
|
||||
readpos=`echo "${ConnectionResult}" |grep Read_Master_Log_Pos: | awk '{print $2}'`
|
||||
execpos=`echo "${ConnectionResult}" |grep Exec_Master_Log_Pos: | awk '{print $2}'`
|
||||
|
||||
# Output of different exit states
|
||||
#########################################################################
|
||||
if [ ${check} = "NULL" ]; then
|
||||
echo "CRITICAL: Slave_SQL_Running is answering NULL"; exit ${STATE_CRITICAL};
|
||||
fi
|
||||
|
||||
if [ ${check} = ${crit} ]; then
|
||||
echo "CRITICAL: ${host}:${port} Slave_SQL_Running: ${check}"; exit ${STATE_CRITICAL};
|
||||
fi
|
||||
|
||||
if [ ${checkio} = ${crit} ]; then
|
||||
echo "CRITICAL: ${host} Slave_IO_Running: ${checkio}"; exit ${STATE_CRITICAL};
|
||||
fi
|
||||
|
||||
if [ ${checkio} = "Connecting" ]; then
|
||||
echo "CRITICAL: ${host} Slave_IO_Running: ${checkio}"; exit ${STATE_CRITICAL};
|
||||
fi
|
||||
|
||||
if [ ${check} = ${ok} ] && [ ${checkio} = ${ok} ]; then
|
||||
# Delay thresholds are set
|
||||
if [[ -n ${warn_delay} ]] && [[ -n ${crit_delay} ]]; then
|
||||
if ! [[ ${warn_delay} -gt 0 ]]; then echo "Warning threshold must be a valid integer greater than 0"; exit $STATE_UNKNOWN; fi
|
||||
if ! [[ ${crit_delay} -gt 0 ]]; then echo "Warning threshold must be a valid integer greater than 0"; exit $STATE_UNKNOWN; fi
|
||||
if [[ -z ${warn_delay} ]] || [[ -z ${crit_delay} ]]; then echo "Both warning and critical thresholds must be set"; exit $STATE_UNKNOWN; fi
|
||||
if [[ ${warn_delay} -gt ${crit_delay} ]]; then echo "Warning threshold cannot be greater than critical"; exit $STATE_UNKNOWN; fi
|
||||
|
||||
if [[ ${delayinfo} -ge ${crit_delay} ]]
|
||||
then echo "CRITICAL: Slave is ${delayinfo} seconds behind Master | delay=${delayinfo}s"; exit ${STATE_CRITICAL}
|
||||
elif [[ ${delayinfo} -ge ${warn_delay} ]]
|
||||
then echo "WARNING: Slave is ${delayinfo} seconds behind Master | delay=${delayinfo}s"; exit ${STATE_WARNING}
|
||||
else
|
||||
# Everything looks OK here but now let us check if the replication is moving
|
||||
if [[ -n ${moving} ]] && [[ -n ${tmpfile} ]] && [[ $readpos -eq $execpos ]]
|
||||
then
|
||||
#echo "Debug: Read pos is $readpos - Exec pos is $execpos"
|
||||
# Check if tmp file exists
|
||||
curtime=`date +%s`
|
||||
if [[ -w $tmpfile ]]
|
||||
then
|
||||
tmpfiletime=`date +%s -r $tmpfile`
|
||||
if [[ `expr $curtime - $tmpfiletime` -gt ${moving} ]]
|
||||
then
|
||||
exectmp=`cat $tmpfile`
|
||||
#echo "Debug: Exec pos in tmpfile is $exectmp"
|
||||
if [[ $exectmp -eq $execpos ]]
|
||||
then
|
||||
# The value read from the tmp file and from db are the same. Replication hasnt moved!
|
||||
echo "WARNING: Slave replication has not moved in ${moving} seconds. Manual check required."; exit ${STATE_WARNING}
|
||||
else
|
||||
# Replication has moved since the tmp file was written. Delete tmp file and output OK.
|
||||
rm $tmpfile
|
||||
echo "OK: Slave SQL running: ${check} Slave IO running: ${checkio} / master: ${masterinfo} / slave is ${delayinfo} seconds behind master | delay=${delayinfo}s"; exit ${STATE_OK};
|
||||
fi
|
||||
else
|
||||
echo "OK: Slave SQL running: ${check} Slave IO running: ${checkio} / master: ${masterinfo} / slave is ${delayinfo} seconds behind master | delay=${delayinfo}s"; exit ${STATE_OK};
|
||||
fi
|
||||
else
|
||||
echo "$execpos" > $tmpfile
|
||||
echo "OK: Slave SQL running: ${check} Slave IO running: ${checkio} / master: ${masterinfo} / slave is ${delayinfo} seconds behind master | delay=${delayinfo}s"; exit ${STATE_OK};
|
||||
fi
|
||||
else # Everything OK (no additional moving check)
|
||||
echo "OK: Slave SQL running: ${check} Slave IO running: ${checkio} / master: ${masterinfo} / slave is ${delayinfo} seconds behind master | delay=${delayinfo}s"; exit ${STATE_OK};
|
||||
fi
|
||||
fi
|
||||
else
|
||||
# Without delay thresholds
|
||||
echo "OK: Slave SQL running: ${check} Slave IO running: ${checkio} / master: ${masterinfo} / slave is ${delayinfo} seconds behind master | delay=${delayinfo}s"
|
||||
exit ${STATE_OK};
|
||||
fi
|
||||
fi
|
||||
|
||||
echo "UNKNOWN: should never reach this part (Slave_SQL_Running is ${check}, Slave_IO_Running is ${checkio})"
|
||||
exit ${STATE_UNKNOWN}
|
@ -292,7 +292,6 @@ mysql_checks() {
|
||||
trap "[ ${err_count} -gt 1 ] && err_count=$(( ${err_count} - 2 ))" USR1
|
||||
while [ ${err_count} -lt ${THRESHOLD} ]; do
|
||||
touch /tmp/mysql-mailcow; echo "$(tail -50 /tmp/mysql-mailcow)" > /tmp/mysql-mailcow
|
||||
host_ip=$(get_container_ip mysql-mailcow)
|
||||
err_c_cur=${err_count}
|
||||
/usr/lib/nagios/plugins/check_mysql -s /var/run/mysqld/mysqld.sock -u ${DBUSER} -p ${DBPASS} -d ${DBNAME} 2>> /tmp/mysql-mailcow 1>&2; err_count=$(( ${err_count} + $? ))
|
||||
/usr/lib/nagios/plugins/check_mysql_query -s /var/run/mysqld/mysqld.sock -u ${DBUSER} -p ${DBPASS} -d ${DBNAME} -q "SELECT COUNT(*) FROM information_schema.tables" 2>> /tmp/mysql-mailcow 1>&2; err_count=$(( ${err_count} + $? ))
|
||||
@ -310,6 +309,30 @@ mysql_checks() {
|
||||
return 1
|
||||
}
|
||||
|
||||
mysql_repl_checks() {
|
||||
err_count=0
|
||||
diff_c=0
|
||||
THRESHOLD=${MYSQL_REPLICATION_THRESHOLD}
|
||||
# Reduce error count by 2 after restarting an unhealthy container
|
||||
trap "[ ${err_count} -gt 1 ] && err_count=$(( ${err_count} - 2 ))" USR1
|
||||
while [ ${err_count} -lt ${THRESHOLD} ]; do
|
||||
touch /tmp/mysql_repl_checks; echo "$(tail -50 /tmp/mysql_repl_checks)" > /tmp/mysql_repl_checks
|
||||
err_c_cur=${err_count}
|
||||
/usr/lib/nagios/plugins/check_mysql_slavestatus.sh -S /var/run/mysqld/mysqld.sock -u root -p ${DBROOT} 2>> /tmp/mysql_repl_checks 1>&2; err_count=$(( ${err_count} + $? ))
|
||||
[ ${err_c_cur} -eq ${err_count} ] && [ ! $((${err_count} - 1)) -lt 0 ] && err_count=$((${err_count} - 1)) diff_c=1
|
||||
[ ${err_c_cur} -ne ${err_count} ] && diff_c=$(( ${err_c_cur} - ${err_count} ))
|
||||
progress "MySQL/MariaDB replication" ${THRESHOLD} $(( ${THRESHOLD} - ${err_count} )) ${diff_c}
|
||||
if [[ $? == 10 ]]; then
|
||||
diff_c=0
|
||||
sleep 60
|
||||
else
|
||||
diff_c=0
|
||||
sleep $(( ( RANDOM % 60 ) + 20 ))
|
||||
fi
|
||||
done
|
||||
return 1
|
||||
}
|
||||
|
||||
sogo_checks() {
|
||||
err_count=0
|
||||
diff_c=0
|
||||
@ -670,6 +693,20 @@ echo "Spawned external_checks with PID ${PID}"
|
||||
BACKGROUND_TASKS+=(${PID})
|
||||
fi
|
||||
|
||||
if [[ ${WATCHDOG_MYSQL_REPLICATION_CHECKS} =~ ^([yY][eE][sS]|[yY])+$ ]]; then
|
||||
(
|
||||
while true; do
|
||||
if ! mysql_repl_checks; then
|
||||
log_msg "MySQL replication check hit error limit"
|
||||
echo mysql_repl_checks > /tmp/com_pipe
|
||||
fi
|
||||
done
|
||||
) &
|
||||
PID=$!
|
||||
echo "Spawned mysql_repl_checks with PID ${PID}"
|
||||
BACKGROUND_TASKS+=(${PID})
|
||||
fi
|
||||
|
||||
(
|
||||
while true; do
|
||||
if ! mysql_checks; then
|
||||
@ -885,6 +922,9 @@ while true; do
|
||||
elif [[ ${com_pipe_answer} == "external_checks" ]]; then
|
||||
log_msg "Your mailcow is an open relay!"
|
||||
[[ ! -z ${WATCHDOG_NOTIFY_EMAIL} ]] && mail_error "${com_pipe_answer}" "Please stop mailcow now and check your network configuration!"
|
||||
elif [[ ${com_pipe_answer} == "mysql_repl_checks" ]]; then
|
||||
log_msg "MySQL replication is not working properly"
|
||||
[[ ! -z ${WATCHDOG_NOTIFY_EMAIL} ]] && mail_error "${com_pipe_answer}"
|
||||
elif [[ ${com_pipe_answer} == "acme-mailcow" ]]; then
|
||||
log_msg "acme-mailcow did not complete successfully"
|
||||
[[ ! -z ${WATCHDOG_NOTIFY_EMAIL} ]] && mail_error "${com_pipe_answer}" "Please check acme-mailcow for further information."
|
||||
|
Loading…
Reference in New Issue
Block a user