Apache Restart - Revision history

Smsldoo at 14:30, 25 March 2014

2014-03-25T14:30:59Z

Smsldoo at 17:41, 17 February 2012

2012-02-17T17:41:41Z

Smsldoo: /* Script */

2011-06-24T15:08:26Z

‎Script

Smsldoo: /* Script */

2011-06-24T14:24:53Z

‎Script

Smsldoo: Created page with "==Overview== Restarts apache if load gets above a certain threshold. Has logging and locking functionality. ==Script== `[javascript,n] #!/bin/bash #Load Threshold for do..."`


2011-06-24T14:00:29Z
Created page with "==Overview==  Restarts apache if load gets above a certain threshold. Has logging and locking functionality.  ==Script==  <code>[javascript,n] #!/bin/bash  #Load Threshold for do..."
New page
==Overview==



Restarts apache if load gets above a certain threshold. Has logging and locking functionality.



==Script==



<code>[javascript,n]

#!/bin/bash



#Load Threshold for doing a dump.

THRESH=20



#Number of lines to keep in log

LOGROTATE=1000





function plog {

	echo "[ `date` ][ $LOAD ] $1" >> /var/log/swapclean

	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: */10 * * * * ]"

		read crontime;

		if [ ! $crontime ] 

		then

			crontime="*/10 * * * *"

		fi

		echo "SHELL=/bin/bash" > /etc/cron.d/apacherestart.sh

		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

</code>



==What to change==



THRESH load threshold before trying to restart apache



LOGROTATE number of lines to keep in the log before rotating.

← Older revision		Revision as of 17:41, 17 February 2012
Line 1:		Line 1:
		+	[[Category:Scripts]]
	==Overview==		==Overview==

Apache Restart - Revision history

Smsldoo at 14:30, 25 March 2014

Smsldoo at 17:41, 17 February 2012

Smsldoo: /* Script */

Smsldoo: /* Script */

Smsldoo: Created page with "==Overview== Restarts apache if load gets above a certain threshold. Has logging and locking functionality. ==Script== [javascript,n] #!/bin/bash #Load Threshold for do..."

Smsldoo: Created page with "==Overview== Restarts apache if load gets above a certain threshold. Has logging and locking functionality. ==Script== `[javascript,n] #!/bin/bash #Load Threshold for do..."`