Script to monitor the systems.

[Prashant Zanwar_4]

Hey guys,

I am again in a need of help to develop a script which shall monitor for CPU and Memory for average usage. And if the usage is consistently high for 5-10 Minutes, it should mail to particular mail alias. Does some one have anything on their systems already. I could do this, but I am not a expert, please send help, every help is appreciated.

Thanks and regards
Prashant

[Geoff Wild]

Before OVO and Big Brother, I did this:


# cat uptime.mon
#!/bin/sh
#
# Name: /scripts/uptime.mon
# Files Used: /scripts/uptime.mon.mesg
#
# Description: This is a script to run "uptime" and send e-mail if the
# system is busy. This is a pro-active script that
# will notify the users emails in the variable MAILADMIN
# And busy variable is the CPU threshold before
# mailing the message to MAILAMIN.

#
# log file: /tmp/uptime.mon.log
logfile=/tmp/uptime.mon.log
if [ -f $logfile ];
then
touch $logfile
else
touch $logfile
fi
busy=170
#
# GUTS of the script
#
#
uptime| cut -d"load average: " -f2 |cut -c14,16-17 |
read sizz;
echo `date``uptime|cut -c28-71` >>$logfile 2>&1
if [ $busy -le $sizz ];
then
/usr/bin/mailx -s "WARN: Sysload HIGH: `uptime|awk '{print $10}'`" `cat /scripts/mailadmin.list` < /scripts/uptime.mon.mesg
fi


Rgds...Geoff

[Prashant Zanwar_4]

Hi,

Doesnt someone have any other suggestions on this? Please reply..

Thanks and regards
Prashant

[Geoff Wild]

For memory, you could use the "memdetail" c program, grab the info you need and if over a thresehold - email.

Output looks like:

# memdetail
Memory Stat total used avail %used
physical 10080.0 9375.4 704.6 93%
active virtual 10367.6 4340.3 6027.3 42%
active real 7244.3 2914.4 4329.9 40%
memory swap 7692.9 1310.7 6382.3 17%
device swap 26528.0 9963.6 16564.4 38%

Rgds...Geoff

[Geoff Wild]

Prashant, did you check out Big Brother?

If you don't want to use it, you might want to look at some of the scripts...

For example, link to bb-memory.sh

http://www.deadcat.net/download.php?fileid=750&filename=bb-memory.sh&location=1


Rgds...Geoff

[RAC_1]

You can check /var/opt/perf/alaramdef file. There are examples in /opt/perf/doc/examples directrory. You can modify /var/opt/perf/aladef file to put your requirements.

Anil

[Prashant Zanwar_4]

I can see that file..I mean /var/opt/perf/alarmdef -- i dont have mwa agent running on the server.

How can I work out to just enable the mwa agent and alert only on memory and cpu. Are there other things also which will come on in picture when I start mwa.

Or enable mwa and run script through crontab-- is that possible.
Thanks a lot for responses..I dont know how mwa works--

Prashant

[RAC_1]

The file /var/opt/perf/alarmdef has section like follows. Modify it as shown. Changes that I made are marked with ##

alarm Memory_Bottleneck > 50 for 5 minutes
type = "Memory"
start
if Memory_Bottleneck > 90 then
red alert "Memory Bottleneck probability= ", Memory_Bottleneck, "%"
##exec "echo "Memory_Bottleneck"|mailx xyz@abc.com -s "Memory Alarm""
else
yellow alert "Memory Bottleneck probability= ", Memory_Bottleneck, "%"
repeat every 10 minutes
if Memory_Bottleneck > 90 then
red alert "Memory Bottleneck probability= ", Memory_Bottleneck, "%"
##exec "echo "Memory_Bottleneck"|mailx xyz@abc.com -s "Memory Alarm""
else
yellow alert "Memory Bottleneck probability= ", Memory_Bottleneck, "%"
end
reset alert "End of Memory Bottleneck Alert"

Modify the cput section in same way. then run a command utility. On utility prompt do alamdef. Ths check the syntax os the alarmdef file. Once successful, do mwa restart scopeux
Read man page of utility for details.

Anil

[Prashant Zanwar_4]

Hi,

Got thru working with Utility program. Now I am just curious, once I start the mwa agent, will it inform concerned team automatically, according to me it will..

And also is there something available which can give me the details of syntaxes/commands which can be used under this file.

Thanks a lot, I appreciate a lot.

Prashant

[RAC_1]

The email will be sent to the user, you put in the alarmdef file. As said earlier, you can refer the documents in /opt/perf/doc and man pages. the utility command will help you with syntx check.

Anil