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Help on Process Monitoring Script

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# 1  
Old 05-13-2009
Help on Process Monitoring Script
Hi All,

I have a Java application running in the background which process looks like this.

Code:
 
java -DMyService=Y -DWorkingDir

And I have a monitoring script which looks like this;

Code:
 
count_service=`ps -aef | grep MyService | wc -l`
if [ count_service -lt 2 ] ; then 
echo "Service_Stopped on `date`" >> $servicelog
fi

Although the service keeps on running, sometimes, I got the message in my log that the service has stopped. Is there something wrong with my monitoring script? To my knowledge, it should be 2; one for Java and another is for grep.

Please help.

Thanks in advance,
SW
# 2  
Old 05-13-2009
You should tell what OS you are running.

Under Solaris, here is a simpler and more robust solution:
Code:
if pgrep -f MyService >/dev/null
then 
  echo "Service_Stopped on `date`" >> $servicelog
fi

# 3  
Old 05-13-2009

Code:
ps -aef | grep '[M]yService' >/dev/null || echo stopped

# 4  
Old 05-13-2009
hi cfajohnson

why do you use "[M]" here?

what's the difference to

Code:
ps -aef | grep MyService >/dev/null || echo stopped

# 5  
Old 05-13-2009
Quote:
Originally Posted by funksen
hi cfajohnson

why do you use "[M]" here?

what's the difference to

Code:
ps -aef | grep MyService >/dev/null || echo stopped


To eliminate the grep command from the output. The regex '[M]yService' does not match the string '[M]yService'.
# 6  
Old 05-13-2009
thanks a lot, good to know, I used to write
grep -v grep Smilie
# 7  
Old 05-13-2009
Wow.... Thanks a lot for great replies Smilie. So, that means my script is wrong... Smilie
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