Difference between revisions of "Apache Restart"

1. !/bin/bash

1. Load Threshold for doing a dump.

THRESH=20

1. Number of lines to keep in log

LOGROTATE=1000

1. Email Alerts

EMAILTO=""

function plog {

echo "[ `date` ][ $LOAD ] $1" >> /var/log/apacherestart if [ EMAILTO ] then echo "[ `date` ][ $LOAD ] $1" fi

if [ "`wc -l /var/log/apacherestart | awk '{print $1}'`" -gt "$LOGROTATE" ] then sed -i -e "1d" /var/log/apacherestart fi return }

function restartapache { plog "Restarting Apache" echo $$ > /var/run/.apacherestart service httpd restart rm -f /var/run/.apacherestart plog "Apache Restart Completed" return }

function enablecron { if [ -e "/etc/cron.d/apacherestart.sh" ] then echo "Cron already enabled, use change to set new time" else echo "What time would you like to set the cron to" echo "[IE: */1 * * * * ]" read crontime; if [ ! $crontime ] then crontime="*/1 * * * *" fi echo "SHELL=/bin/bash" > /etc/cron.d/apacherestart.sh if [ $EMAILTO ] then echo 'MAILTO="$MAILTO"' > /etc/cron.d/apacherestart.sh fi echo "$crontime root $(readlink -f $0)" >> /etc/cron.d/apacherestart.sh chmod 0644 /etc/cron.d/apacherestart.sh echo "Cron enabled [$crontime root $(readlink -f $0)]" return fi return }

function disablecron { if [ -e "/etc/cron.d/apacherestart.sh" ] then rm -f /etc/cron.d/apacherestart.sh echo "Cron disabled" else echo "Cron not enabled" fi

	return

}

function checkload { LOAD=`cat /proc/loadavg | awk '{print $1}' | awk -F '.' '{print $1}'`

if [ $LOAD -gt $THRESH ] then if [ ! -e "/var/run/.apacherestart" ] then restartapache else opid=`cat /var/run/.apacherestart` if [ ! "`ps ax | grep $opid | grep ${0##*/}`" ] then plog "Stale Lock File Removed" rm -f /var/run/.apacherestart restartapache else plog "Active Lock File Found" fi fi fi }

case $1 in

       --cron)
               case $2 in

on) enablecron ;; off) disablecron ;; change) disablecron enablecron ;; esac

               ;;
       --help)
               echo "Apache Restart usage:"

echo " --cron [on, change, off]" echo " on: Turns on cron job and asks for time" echo " change: Changes the cron time" echo " off: Turns off the cron job"

               ;;
       *)
               checkload
               ;;
 esac