httpd.load.sh

#!/bin/bash
# httpd.load.sh
# Script to check the 1-minute server load and sends a mail.
# script must be run as root; we run it from crontab every five minutes
# Copyright (C) NoBaloney Internet Services
# Licensed under GNU General Public License, Version 2

# Required Customizations:
SERVER_NAME="SERVER4"
EMAIL_ADDRESS="admin@vizyon.net.tr"

# Optional Customizations:
 # path to uptime program
 UP_TIME=`uptime`

 # High load warning value (example: 101) means no warning emails
 # otherwise send warning email if at or above this value
 LOAD_WARNING="101"

 # send email and restart httpd if at or above this value
 HTTPD_RESTART_LOAD="80"

# no customizations below this point

LOAD_TIME=`date '+%F %H:%M'`

TOP_OP=`top -b -n 1 | head -20`
TOP[1]=`echo "$UP_TIME"`
TOP[2]=`echo "$TOP_OP" | grep 'zombie'`
TOP[3]=`echo "$TOP_OP" | grep '%' | grep -v 'PID'`
TOP[4]=`echo "$TOP_OP" | grep '^Swap\:'`
TOP[5]=`echo "$TOP_OP" | grep '^Mem\:'`

ONE_LOAD=`echo "${TOP[1]}" | awk '{print $10}' | cut -c1-4`
#echo $ONE_LOAD

if [ "$ONE_LOAD" == "aver" ]; then
      ONE_LOAD=`echo "${TOP[1]}" | awk '{print $11}'| cut -c1-4`
fi
#echo $ONE_LOAD

ONE_LOAD_CALC=`echo "${TOP[1]}" |awk '{print $10}' | cut -c1-4 | awk 'BEGIN {FS = "."}{print $1}'`
#echo $ONE_LOAD_CALC

if [ "$ONE_LOAD_CALC" == "aver" ]; then
        ONE_LOAD_CALC=`echo "${TOP[1]}"| awk '{print $11}'| cut -c1-4 | awk 'BEGIN {FS = "."}{print $1}'`
fi
#echo $ONE_LOAD_CALC

ONE_LOAD_SUB="$ONE_LOAD(1min) - $LOAD_TIME"
#echo $ONE_LOAD_SUB

MAIL_OUTPUT=`echo -e "${TOP[1]}\n${TOP[2]}\n${TOP[3]}\n${TOP[4]}\n${TOP[5]}\n"`
#echo -e "\n$MAIL_OUTPUT\n"

if [ "$ONE_LOAD_CALC" -ge "$LOAD_WARNING" ]; then
        echo -e "\nSERVER LOAD of $SERVER_NAME is $ONE_LOAD_SUB\n\n$MAIL_OUTPUT\n" | mail -s "$SERVER_NAME - LOAD WARNING : $ONE_LOAD_SUB" $EMAIL_ADDRESS
fi

if [ "$ONE_LOAD_CALC" -ge "$HTTPD_RESTART_LOAD" ]; then
         /etc/init.d/httpd restart 2&> /var/log/cron_load.log  && echo -e "\nSERVER LOAD of $SERVER_NAME is $ONE_LOAD_SUB\n" >> /var/log/cron_load.log && echo -e "$MAIL_OUTPUT\n" >> /var/log/cron_load.log && cat /var/log/cron_load.log | mail -s "$SERVER_NAME - HTTPD RESTART : $ONE_LOAD_SUB" $EMAIL_ADDRESS


fi

#mail -s "Cron: calisti." $EMAIL_ADDRESS

exit 0
#END