To find out processes, which have exceeded CPU utilization threshold on the server.
In the example,
a) CPU utilization of java processes are checked. You may replace it for any other process.
b) Also, input the threshold value
This will list all the CPU processes which has exceeded threshold limit
ps -eo pid,pcpu,args | sort +1n | grep -i java | nawk -v threshold= '$2 > threshold {print "pid " $1,"has crossed the threshold value of cpu " $2;}'
This will list all the java processes and their CPU utlixation
ps -eo pid,pcpu,args | sort +1n | grep -i java | nawk -v threshold= '$2 > threshold {print $1,"has crossed the threshold value of cpu";} $2 <= threshold {print;}' > outputFile
This will put all alerts and command outout in same file
ps -eo pid,pcpu,args | sort +1n | grep -i java | nawk -v threshold= '$2 > threshold {print $1,"has crossed the threshold value of cpu";} $2 <= threshold {print;}' > outputFile
if you need it in different files, then
All alerts in one file
ps -eo pid,pcpu,args | sort +1n | grep -i java | nawk -v threshold= '$2 > threshold {print $1,"has crossed the threshold value of cpu";}' > alertFile
Rest in another file
ps -eo pid,pcpu,args | sort +1n | grep -i java | nawk -v threshold= '$2 <= threshold {print;}' > outputFile
And content of alertFile can be sent as email using mailx command.
/usr/sbin/mailx -s "Your Subject" ADDRESS_EMAIL < alertFile
# the end
Hope this helps. Rupam
