てきとー管理者にっき！

その後、何度かcoreを吐くが、全く原因が掴めず。
このままでは、相当やばい！

って事で、
child pid XXXX exit signal Segmentation fault (11)
とか
child pid XXXX exit signal Bus error (7)
を吐いたら、Apacheを再起動するようにしてみた。

早速、swatchを導入。
通常 /root/.swatchrc に記述するようになっているが、これでは管理しにくいので、 /etc/swatch に設定ファイルを置いて動くようにしてみた。

# mkdir /etc/swatch
# cd /etc/swatch
# vi error_log.conf
----------------------------------------------------------------------------------------
#logfile: /var/log/httpd/error_log

watchfor /signal Bus error (7)|signal Segmentation fault (11)/
echo
mail admin@hogehoge.jp,subject=[Alert] Apache Restart!!
exec /etc/rc.d/init.d/httpd restart
----------------------------------------------------------------------------------------

こんな感じで設定。
swatchは標準で起動スクリプトが用意されていないので、色々調べてこんな感じで作ってみた。

----------------------------------------------------------------------------------------
#!/bin/sh
#
# Swatch
#
# chkconfig: 345 90 35
# description: swatch log monitoring
#

SWATCH=/usr/bin/swatch
LOCKFILE=/var/lock/subsys/swatch
CONFPATH=/etc/swatch
PROCFILE_PATH=/var/run
CONFFILE=*.conf
WORKPATH=/tmp
LOGFILE=/var/log/swatch/swatch.log

. /etc/rc.d/init.d/functions

start()
{
RESULT_CODE=0

if [ -f ${LOCKFILE} ]; then

echo "Swatch is already running."
exit 1

else

touch ${LOCKFILE}

fi

PROCCOUNT=0

for CONFIGFILE in ${CONFPATH}/${CONFFILE}
do
if [ -f ${CONFIGFILE} ]; then

PROCCOUNT=`expr ${PROCCOUNT} + 1`

TARGET_LOG=`head -1 ${CONFIGFILE} | awk 'BEGIN { FS = ":" }; { sub(/([ \t]+$|^[ \t]+)/, "", $2); print $2 }'`

echo -n "Starting swatch: ${TARGET_LOG}: "

daemon ${SWATCH} \
--config-file ${CONFIGFILE} \
--tail-file ${TARGET_LOG} \
--script-dir=${WORKPATH} \
--awk-field-syntax \
--daemon \
--pid-file ${PROCFILE_PATH}/swatch.${PROCCOUNT}.pid \
2>> ${LOGFILE}

RETVAL=$?
echo

if [ ${RETVAL} != 0 ]; then

RESULT_CODE=${RETVAL};

fi

else

RESULT_CODE=7

fi

done

return ${RESULT_CODE}
}

stop()
{
if [ -f ${LOCKFILE} ]; then

for PID in ${PROCFILE_PATH}/swatch.*.pid
do
if [ -f ${PID} ]; then

PID_NUMBER=`cat ${PID}`

echo -n "Shutting down swatch (pid ${PID_NUMBER}): "

killproc -p ${PID}
RETVAL=$?

rm -f ${PID}

echo

else

RETVAL=7

fi

done
fi

rm -f ${LOCKFILE}
rm -f ${WORKPATH}/.swatch_script.*

return ${RETVAL}
}

status()
{
if [ -f ${LOCKFILE} ]; then

echo -n "Swatch (pid :"

for PID in ${PROCFILE_PATH}/swatch.*.pid
do
if [ -f ${PID} ]; then

echo -n " `cat ${PID}`"

fi

done

echo ") is running."

else

echo "Swatch is stopped."

fi

return 0
}

case "$1" in

start)
start
RETVAL=$?
;;

stop)
stop
RETVAL=$?
;;

restart)
stop
start
RETVAL=$?
;;

status)
status
RETVAL=$?
;;

*)
echo "Usage: swatch {start|stop|restart|status}"
exit 1
esac

exit ${RETVAL}
----------------------------------------------------------------------------------------

これを
chkconfig --add swatch
して
service swatch start
して
chkconfig swatch on
こんな感じ！

これで、ちょっと様子見だな。