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Re: Detecting stale pid file under *nix

by andal (Hermit)
on Oct 25, 2016 at 07:20 UTC ( #1174648=note: print w/replies, xml ) Need Help??

in reply to Detecting stale pid file under *nix

If you are already checking the /proc/$pid, then why don't you check /proc/$pid/cmdline to see, if it contains name of your daemon? Or you can read destination of the symbolic link /proc/$pid/exe to see if it points to the executable of the daemon

If the daemon is your own application, then you may want to change it so that it listens for termination (or other commands) on some hidden unix socket. Then you can terminate it by writing to that socket.

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Re^2: Detecting stale pid file under *nix
by Dallaylaen (Chaplain) on Oct 25, 2016 at 13:30 UTC

    Daemon is really a PSGI application, so the exe is doing to point to Perl interpreter and modification of daemon itself is possible, but undesired. I'd rather complicate my init script...

      Then check command line. Even if it is perl, the command line still contains name of the script and parameters.

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