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contrib-munin/plugins/other/healthcheck_log

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2011-08-02 01:54:57 +02:00
#!/bin/bash
#
#healthcheck on munin
#egrep system log and alert.
#
#programed by rti (hiroyuki fujie) super.rti@gmail.com @super_rti
#LICENSE: NYSL (public domain)
#
#
#config file
# /etc/munin/plugin-conf.d/munin-node
#
#example minimum config
#---------------------------------------------------
#[healthcheck_log]
#user root
#env.log_1 /var/log/messages
#---------------------------------------------------
#
#check two log
#---------------------------------------------------
#[healthcheck_log]
#user root
#env.log_1 /var/log/messages
#env.log_2 /var/log/syslog
#---------------------------------------------------
#
#check two three
#---------------------------------------------------
#[healthcheck_log]
#user root
#env.log_1 /var/log/messages
#env.log_2 /var/log/syslog
#env.log_3 /var/log/dmesg
#---------------------------------------------------
#
#set name
#---------------------------------------------------
#[healthcheck_log]
#user root
#env.log_1 /var/log/messages
#env.name_1 my_server_messages
#---------------------------------------------------
#
#set egrep string
#---------------------------------------------------
#[healthcheck_log]
#user root
#env.log_1 /var/log/messages
#env.grep_1 alert|warning
#---------------------------------------------------
#
#set egrep string
#---------------------------------------------------
#[healthcheck_log]
#user root
#env.log_1 /var/log/messages
#env.grep_1 alert|warning
#---------------------------------------------------
#
#full option
#/etc/munin/plugin-conf.d/munin-node
#---------------------------------------------------
#[healthcheck_log]
#user root #log file is read only root user.
#env.log_1 /var/log/messages #target log filename
#env.grep_1 critical|error #egrep string.
#defualt by critical|error|warning|crash|fatal|kernel
#---------------------------------------------------
#
#edakari speed up.
CHECKMAX=`env | grep log_ | wc -l`
let CHECKMAX="$CHECKMAX + 1"
MINUTE_BY_GREP_RANGE=10
if [ "$1" = "autoconf" ]; then
if [ $CHECKMAX -le 1 ]; then
echo no
exit 1
fi
echo yes
exit 0
fi
if [ "$1" = "config" ]; then
echo 'graph_title log grep (match count)'
echo "graph_args --base 1000 -l 0 --vertical-label match_count"
echo 'graph_scale no'
echo 'graph_vlabel match_count'
echo 'graph_category healthcheck'
echo 'graph_info This graph shows the bad event count on log'
for(( I = 1; I < $CHECKMAX; ++I ))
do
eval log=\$log_${I}
eval name=\$name_${I}
eval grep=\$grep_${I}
if [ "x${log}" = "x" ]; then
continue
fi
if [ "x${name}" = "x" ]; then
name=`echo $log | sed 's#[/|\.]#_#g'`
fi
if [ "x${name}" = "x" ]; then
grep="critical|error|crash|fatal|kernel"
fi
echo "$name.label $name"
echo "$name.info egrep $grep $log | wc -l"
echo "$name.draw LINE2"
echo "$name.min 0"
echo "$name.max 20"
echo "$name.critical 0:0"
done
exit 0
fi
NOWTIME=`date --date "$MINUTE_BY_GREP_RANGE minute ago" +%s`
for(( I = 1; I < $CHECKMAX; ++I ))
do
eval log=\$log_${I}
eval name=\$name_${I}
eval grep=\$grep_${I}
if [ "x${log}" = "x" ]; then
continue
fi
if [ "x${name}" = "x" ]; then
name=`echo $log | sed 's#[/|\.]#_#g'`
fi
if [ "x${grep}" = "x" ]; then
grep="critical|error|crash|fatal|kernel"
fi
COUNT=0
MESSAGE=
IFS=$'\n'
MATCHLINES=(`egrep -i "$grep" "$log"`)
for(( N = ${#MATCHLINES[@]} - 1; N >= 0 ; --N ))
do
LINE=${MATCHLINES[$N]}
DATESTRING=`echo $LINE | awk '{ printf("%s %s %s",$1,$2,$3)}'`
LOGTIME=`date --date "$DATESTRING" +%s`
if [ $LOGTIME -lt $NOWTIME ]; then
break
fi
let COUNT="$COUNT + 1"
MESSAGE="$MESSAGE$LINE //@LINE@// "
done
if [ $COUNT -eq 0 ]; then
echo "${name}.value 0"
else
echo "${name}.value ${COUNT}"
echo "${name}.extinfo ${MESSAGE}"
fi
done