Bash shell script to check if script itself is running
hi guys
we've had nagios spewing false alarm (for the umpteenth time) and finally the customer had enough so they're starting to question nagios. we had the check interval increased from 5 minutes to 2 minutes, but that's just temporary solution. I'm thinking of implementing a script on the affected client servers that monitors the processes, and if its not running it will use Logger to produce a string of sentence that I can easily pick up with nagios monitoring. all i have to do then is just add the "key words" into nagios check configuration which already monitors /var/log/messages
So the script that looks for process to check if its running or not is as such:
so how do i monitor to see if the script itself is running? I tried with ps -ef but you know ps is still going to show me two lines (one with ps, the other if script is running) so its not really a good way to check, isnt it?
when i put the job in the background with nohup and grep with ps aux I get nothing
@hergp im going try that out and update here with my full script when im done! thanks!
---------- Post updated at 11:05 AM ---------- Previous update was at 10:18 AM ----------
@hergp
the command works well for grep but how do i check if the script itself is running? when i run my script as such
and i opened another terminal and grepped the job but the result is still empty grep. so how can i check and confirm the script itself is running?
I see your script is checking if the process is running, using logger to log the status and terminating. This is the reason why you are not seeing it running. You should put this in an infinite while loop with a sleep time of your choice for periodically checking and logging the status.
E.g:-
Now you can start your script using nohup and open another terminal to check if it is running:-
the grep command totally didn't work, i am still getting empty result when i grep
if i use flock i can see messages in my /var/log but how do i ensure that it only gets written into if a. the script is running b. the script is not running c. the process is running d. the process is not running
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