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SIGUSR1 restarts, how to find out who ?

Discussion in 'General Discussion' started by tipsterbaine, Feb 29, 2004.

  1. tipsterbaine

    tipsterbaine Member

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    Just installed mmcache. Since then apache has been gracefully restarting using a SIGUSR1 at irregular intervals.

    These are the error_log lines;
    [Sun Feb 29 15:54:49 2004] [notice] SIGUSR1 received. Doing graceful restart
    [Sun Feb 29 15:54:49 2004] [notice] Apache configured -- resuming normal operations
    [Sun Feb 29 15:54:49 2004] [notice] suEXEC mechanism enabled (wrapper: /usr/local/apache/bin/suexec)
    [Sun Feb 29 15:54:49 2004] [notice] Accept mutex: sysvsem (Default: sysvsem)


    How would one go about tracking down exactly which process raised the SIGUSR1 ?

    Many Thanks.
     
  2. chirpy

    chirpy Well-Known Member

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    Go on, have a guess
    I see these too. I've not done too much investigation into it yet, but I've been assuming that it's a cPanel process doing it.

    However, I'm not aware of anything running that would prompt it (e.g. subdomain creation).
     
  3. Wojjie

    Wojjie Member

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    That is most likely CPanel that is doing a 'graceful' restart after a configuration change to Apache.
     
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