[Bug 1242376] Re: "reload php5-fpm" crashes

[Robie Basak]

I have documented the workaround in the bug description. This bug
presumably does not affect releases >= Vivid since it is related to
upstart and Ubuntu runs systemd since Vivid. So marking Fix Released and
creating a Trusty task in case someone can come up with a good fix for
Trusty that can be SRU'd. Importance -> Medium as a workaround is
available.

** Description changed:

+ [Impact]
+ 
+ On releases running upstart (those older than Vivid), the php5-fpm
+ service crashes on reload.
+ 
+ [Workaround]
+ 
+ Create /etc/init/php5-fpm.override and add the line "reload signal
+ SIGUSR2" to it.
+ 
+ [Original Description]
+ 
  "reload php5-fpm" with upstart does not work.
  
  php5-fpm will crash and leave non-working child processes hanging around
  that will block any recovery until they are killed off manually.
  
  This is because php5-fpm does not handle SIGHUP. It results in an
  uncontrolled exit. After telling upstart to instead use SIGUSR2 on
  reload*, things work as expected.
  
  * "reload signal SIGUSR2" in upstart php5-fpm.conf
  
  Signals handled by php5-fpm seems to be:
  * SIGINT, SIGTERM: immediate termination
  * SIGQUIT: graceful stop
  * SIGUSR1: re-open log file
  * SIGUSR2: graceful reload of all workers + reload of fpm conf/binary
  
  Ubuntu 13.10, amd64
  ii  php5-fpm                             5.5.3+dfsg-1ubuntu2              amd64        server-side, HTML-embedded scripting language (FPM-CGI binary)

** Changed in: php5 (Ubuntu)
     Assignee: Pratiksha (deekshammhs10) => (unassigned)

** Changed in: php5 (Ubuntu)
       Status: Confirmed => Fix Released

** Also affects: php5 (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: php5 (Ubuntu Trusty)
       Status: New => Triaged

** Changed in: php5 (Ubuntu Trusty)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1242376

Title:
  "reload php5-fpm" crashes

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