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[Bug 1463635] [NEW] Apache2 waits indefinetely when reloading

 

Public bug reported:

System : Ubuntu 14.04.2 LTS
Package : apache2 - 2.4.7-1ubuntu4.4

Description :
When a reload invoked by logrotate;
2-3 time in a week apache2 stops responding requests in our web server.
While in this period, clients can connect but waits indefinitely for a reply.
Then apache2 needs a full restart to start serve web pages.
Reload does not work in this situation.

After some research we found that Apache2 has a GracefulShutdownTimeout directive that kill remaining requests after a timeout.
But this directive not set (defaults to zero) in default Ubuntu config.
( See : http://httpd.apache.org/docs/2.4/en/mod/mpm_common.html )

This should have a reasonable value in default config.

Expected :
Apache2 reloads and continues to serve web pages without human interaction.

Happened :
Apache2 waits for remaining requests indefinitely and needs a restart.

** Affects: apache2 (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  System : Ubuntu 14.04.2 LTS
  Package : apache2 - 2.4.7-1ubuntu4.4
  
  Description :
  When a reload invoked by logrotate;
  2-3 time in a week apache2 stops responding requests in our web server.
  While in this period, clients can connect but waits indefinitely for a reply.
- Then apache2 needs a full restart to start server web pages.
+ Then apache2 needs a full restart to start serve web pages.
  Reload does not work in this situation.
  
  After some research we found that Apache2 has a GracefulShutdownTimeout directive that kill remaining requests after a timeout.
  But this directive not set (defaults to zero) in default Ubuntu config.
- ( http://httpd.apache.org/docs/2.4/en/mod/mpm_common.html#gracefulshutdowntimeout )
+ ( See : http://httpd.apache.org/docs/2.4/en/mod/mpm_common.html )
  
  This should have a reasonable value in default config.
  
- Expected : 
+ Expected :
  Apache2 reloads and continues to serve web pages without human interaction.
  
  Happened :
  Apache2 waits for remaining requests indefinitely and needs a restart.

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https://bugs.launchpad.net/bugs/1463635

Title:
  Apache2 waits indefinetely when reloading

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