August 21, 2013

Bash script to check and restart apache, mysql and sendmail if it’s down

#!/bin/sh

################ Check MySQL #################

STARTAPACHE="/etc/init.d/httpd start"

STARTMYSQL="/etc/init.d/mysqld start"

STARTMAIL="/etc/init.d/sendmail start"

LOGFILE=/home/jackassmccoy/servicelogs/logfile

SERVICE='mysqld'

echo "" >> $LOGFILE

echo `date` >> $LOGFILE

if ps ax | grep -v grep | grep $SERVICE > /dev/null

then

    echo "$SERVICE service running, everything is OK" >> $LOGFILE

else

    echo "$SERVICE is not running, restarting $SERVICE" >> $LOGFILE

        checkmysql=`ps ax | grep -v grep | grep -c mysqld`

                if [ $checkmysql -le 0 ]

                then

                        $STARTMYSQL

                                if ps ax | grep -v grep | grep $SERVICE > /dev/null

                                then

                            echo "$SERVICE service is now restarted, everything is OK" >> $LOGFILE

fi

fi

fi

############### Check Apache ################

SERVICE='httpd'

if ps ax | grep -v grep | grep $SERVICE > /dev/null

then

    echo "$SERVICE service running, everything is OK" >> $LOGFILE

else

    echo "$SERVICE is not running, restarting $SERVICE" >> $LOGFILE

        checkapache=`ps ax | grep -v grep | grep -c httpd`

                if [ $checkapache -le 0 ]

                then

                        $STARTAPACHE

                                if ps ax | grep -v grep | grep $SERVICE > /dev/null

                then

                            echo "$SERVICE service is now restarted, everything is OK" >> $LOGFILE

fi

fi

fi

############### Check Sendmail ####################

SERVICE='sendmail'

if ps ax | grep -v grep | grep $SERVICE > /dev/null

then

    echo "$SERVICE service running, everything is OK" >> $LOGFILE

else

    echo "$SERVICE is not running, restarting $SERVICE" >> $LOGFILE

        checksendmail=`ps ax | grep -v grep | grep -c sendmail`

                if [ $checksendmail -le 0 ]

                then

                        $STARTMAIL

                                if ps ax | grep -v grep | grep $SERVICE > /dev/null

                                then

                            echo "$SERVICE service is now restarted, everything is OK" >> $LOGFILE

fi

fi

fi

exit 0