netstatとかロードアベレージの閾値を超えたらログを残しつつApache再起動

apache_restert.sh

#!/bin/sh


######
# netstatの80が400越えたら再起動
#####

apacheprocess=`netstat -an | grep :80 | wc -l`

if [ $apacheprocess -gt 400 ]; then
   stopdate=`date`
   echo "$stopdate apache stoped. try restart." >> /usr/local/hosting/apache_restart_log.txt
   netstat -an > /usr/local/hosting/apache_restart_netstat.txt
   /usr/local/apache2/bin/apachectl stop
   echo "$stopdate apache stoped (done)" >> /usr/local/hosting/apache_restart_log.txt
   sleep 60
   /usr/local/apache2/bin/apachectl start
   echo "$stopdate apache started." >> /usr/local/hosting/apache_restart_log.txt
   echo 'apache netstat restart' | mail mailaddr@example.com -s "Apache Restart "`hostname`
fi

######
# ロードアベレージが50越えたら再起動
#####

LOAD=`cat /proc/loadavg | awk '{print $1}' | sed 's/\..*//'`

if [ $LOAD -gt 50 ]; then
   stopdate=`date`
   echo "$stopdate loadAvg is too high. apache stopping." >> /usr/local/hosting/apache_restart_log.txt
   /usr/local/apache2/bin/apachectl stop
   echo "$stopdate apache stoped (done)" >> /usr/local/hosting/apache_restart_log.txt
   sleep 60
   /usr/local/apache2/bin/apachectl start
   echo "$stopdate apache started." >> /usr/local/hosting/apache_restart_log.txt
   echo 'apache LA restart' | mail mailaddr@example.com -s "Apache Restart "`hostname`
fi

exit;