Memory leak keeper

check_mem.sh

#!/bin/bash
#
# Memory leak keeper
#

# simple log
LOG_FILE='/dev/stdout'
# system info, can be $LOG_FILE
COL_FILE=$LOG_FILE
# mem limit in percent
MEM_LIMIT='90'
# running
RUN_FILE='/tmp/check_mem'

function get_data {
    # uncommecnt or add what you need
    ps -eo pcpu,pmem,pid,user,args >> $COL_FILE
    #/etc/init.d/httpd fullstatus >> $COL_FILE
    #mysqladmin proc >> $COL_FILE
}

function restart_services {
    # uncomment or add what you need
    #/etc/init.d/httpd restart >> $COL_FILE
    #/etc/init.d/mysqld restart >> $COL_FILE
    #/etc/init.d/dovecot restart >> $COL_FILE
    #/etc/init.d/amavisd restart >> $COL_FILE

    return 0
}

if [ -e $RUN_FILE ] ; then
    exit 1
fi
                
touch $RUN_FILE

mem=`/usr/bin/free | grep "Mem:"`
max_mem=`echo $mem | awk '{print $2}'`
curr_mem=`echo $mem | awk '{print $3}'`

p_mem=$((($curr_mem*100)/$max_mem))


if [ $p_mem -gt $MEM_LIMIT ] ; then
    echo "[`date +'%F %R'`] mem is out of interval - $p_mem %" >> $LOG_FILE
    echo " --------------- [`date +'%F %R'`] --------------- " >> $COL_FILE
    get_data
    restart_services
fi

rm -f $RUN_FILE