*/15 * * * * sh /home/sysadm/script/load.sh

# echo "no" > /home/sysadm/script/tmp/loadreply

#!/bin/bash 

infofile="/home/sysadm/www/loadinfo.`date +%d-%m-%Y`.txt" # File will store the all status to diagnose the load problem 
temp="/home/sysadm/script/tmp/mailinfo" # File will store the formated output when load is high 
loadreply="/home/sysadm/script/tmp/loadreply" # File will store formated output when load avg problem is solved 
srvrnm=`hostname` # get the hostname of the server [/color] 
cur=`uptime | awk '{print $10}' | tr -d , | cut -d. -f1` # Get the current load of the server 

if [ $cur -ge 3 ]; then # Condition if the server load is greater then 3 then sent Alert email, you can change this value 


#################### Formating Server Statistics to diagnose the server when server load is high ################## 

echo " " >> $infofile 
echo " " >> $infofile 
echo " " >> $infofile 
echo "_____________________________________________________________________________________________________" >> $infofile 
echo "High Load Average `date`, please find detailed information of it as mentioned below:" >> $infofile 
echo "_____________________________________________________________________________________________________" >> $infofile 

echo " " >> $infofile 
echo " " >> $infofile 
echo "------------------" >> $infofile 
echo "| Uptime status: |" >> $infofile 
echo "------------------" >> $infofile 
/usr/bin/uptime >> $infofile ##### Adding uptime status 

echo " " >> $infofile 
echo "-----------------------------------" >> $infofile 
echo "| Top 20 CPU consuming processes: |" >> $infofile 
echo "-----------------------------------" >> $infofile 
ps aux | head -1 >> $infofile 
#ps aux | sort -rn +2 | head -20 >> $infofile 
ps aux --no-headers | sort -rn +2 | head -20 >> $infofile #### Top 20 cpu consuming process 

echo " " >> $infofile 
echo "-----------------------------------" >> $infofile 
echo "| Top 10 memory-consuming processes: |" >> $infofile 
echo "-----------------------------------" >> $infofile 
ps aux | head -1 >> $infofile 
ps aux --no-headers| sort -rn +3 | head >> $infofile #### Top 10 memory consuming process 

echo " " >> $infofile 
echo "---------------------------" >> $infofile 
echo "| Memory and Swap status: |" >> $infofile 
echo "---------------------------" >> $infofile 
/usr/bin/free -m >> $infofile ###### Memory usage status 

echo " " >> $infofile 
echo "------------------------------" >> $infofile 
echo "| Active network connection: |" >> $infofile 
echo "------------------------------" >> $infofile 
/bin/netstat -tnup | grep ESTA >> $infofile # All active network connectins 

echo " " >> $infofile 
echo "---------------------------" >> $infofile 
echo "| Disk Space information: |" >> $infofile 
echo "---------------------------" >> $infofile 
/bin/df -h >> $infofile # get the disk status information also 
echo " " >> $infofile 
echo "______________________________________________________________________________________________" >> $infofile 
echo " " >> $infofile 
################################################################### 

################### Formation for email output ########################## 
echo "Hi," > $temp 
echo " " >> $temp 
echo " " >> $temp 
echo "Presently we have noticed high server load on `hostname`." >> $temp 
echo " " >> $temp 
echo "Please find the status of `hostname` server using below mentioend URL: http://$srvrnm/sysadm/loadinfo.`date +%d-%m-%Y`.txt" >> $temp 
echo " " >> $temp 
echo " " >> $temp 
echo "Thanks," >> $temp 
echo " " >> $temp 
echo "- Linux SysAdmin." >> $temp 
###################################################### 

mail -s "Alert: Server Load `hostname`" abc@yourdom.com < $temp 
echo "yes" > $loadreply ## Change value in loadreply file to sent email when problem is resolved 

fi 

#### Condition to sent email when load problem is resolved by sysadmin ###### 
if [ `cat $loadreply` = 'yes' ] && [ $cur -le 1 ]; then 

################### Formation for email output ########################## 
echo " " > $temp 
echo "Hi," >> $temp 
echo " " >> $temp 
echo "The server had high utilization problem and it is recovered from that" >> $temp 
echo "Current load of the server is:" >> $temp 
echo " " >> $temp 
echo " " >> $temp 
echo "`uptime`" >> $temp 
echo " " >> $temp 
echo "Thanks," >> $temp 
echo " " >> $temp 
echo "- Linux Sysadmin." >> $temp 
###################################################### 

mail -s "Alert: Server Load is under control for `hostname` on `date`" abc@yourdom.com < $temp 
echo "no" > $loadreply # change the value in laod reply file that problem is solved 

fi 

############## End of Script #########