ansible-role-postfix/files/check_postfix_processed

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2020-06-08 16:57:40 +02:00
#!/usr/bin/env bash
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
# ===============
# check_postfixprocessed - plugin to check the number of mail processed by parsing logfiles
# ===============
# * mail processor written by Cecil Westerhof & Modifications for nagios by Frank IJskes
# * Christian Nutz identified the IF as slow on large logfiles, by only checking from the bottom up performance went back to normal
# version 2 uses AWK to improve processing / lower cpu load
# plugin return codes:
# 0 OK
# 1 Warning
# 2 Critical
# 3 Unknown
NO_OF_SECONDS=300
POSTFIX_LOG="/var/log/mail.log"
while getopts "hvw:c:" opt
do
case $opt in
h)
showhelp=1
break
;;
w)
warning="$OPTARG"
;;
c)
critical="$OPTARG"
;;
v)
verbose=1
;;
esac
done
printUsage() {
echo "Usage: $0 [-h] [-v] -w <warning> -c <critical>"
echo ""
echo "Example: $0 -w 50 -c 100"
}
printHelp() {
printUsage
echo ""
echo "This plugin checks the number of messages processed by Postfix in the last 5 minutes."
echo ""
echo "For more details, see inside the script ;)"
echo ""
exit 3
}
if [ "$showhelp" = "1" ]; then
printHelp
exit 3
fi
if [ ! "$warning" ] || [ ! "$critical" ]; then
printUsage
exit 3
fi
if [ $warning -ge $critical ]; then
echo "<warning> has to be smaller than <critical>!"
exit 3
fi
if [ ! "$POSTFIX_LOG" ]; then
echo "Could not find postfix log!"
exit 3
fi
countSentMessages () {
NOW=`date +%s`
DATE_FROM=`awk -v now=$NOW -v seconds=$NO_OF_SECONDS 'BEGIN{print strftime("%b %d %T", now-seconds)}'`
DATE_TO=`awk -v now=$NOW 'BEGIN{print strftime("%b %d %T", now)}'`
echo `awk '$0>=from && $0<=to' from="$DATE_FROM" to="$DATE_TO" ${POSTFIX_LOG} | grep ' postfix/smtp\[.*, status=sent ' | wc -l`
}
sentMessagesCount=`countSentMessages`
echo "Messages processed in the last $NO_OF_SECONDS seconds: $sentMessagesCount | mailsprocessed=$sentMessagesCount"
if [ "$sentMessagesCount" -ge "$critical" ]; then
exit 2
elif [ "$sentMessagesCount" -ge "$warning" ]; then
exit 1
else
exit 0
fi