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Guillaume Coté
Asked: 2013-03-25 22:32:38 +0800 CST

How to supervise a process and schedule a periodic restart?

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I run a process that sometime crash and sometime freeze. I used supervise to have it automatically restart when it crash. However, if it freeze, it stay frozen until I am back in front of the computer. I would like a tool that would restart it when it crash, but can also be configure to do periodic kill and restart, so if it freeze, it won't stay frozen more that a given period of time.

Which tool would who suggest?

Thanks

process

2 Answers

  1. You could use cron to do this if you want... 

    sudo crontab -e

* /5 * * * pkill -9 <your process name here> ; <your process name here>

    Would kill and restart it every 5 hours. More examples... Cron examples

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  2. Best Answer

    I tried using supervise from daemontools with a crontab :

    First, I start with

    supervise /fullpath

    and I use this crontab : 

    0 23 * * * svc -d /fullpath
2 23 * * * svc -k /fullpath
5 23 * * * svc -u /fullpath

    Where fullpath is the directory containing the file called run which start my process. The tricky part is the file called should end with :

    exec java ...

    Normally, I start the application with a script, but if I put that script in the file called run, when svc is executed, it send the signal to the script and the java process continue to run. I created a copy of the script and modified it to make it output the call to java with all parameter, and copied this in the file called run.

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