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Message #21956
[Bug 1466926] Re: reload apache2 with mpm_event cause scoreboard is full
Thanks Tobias for all the tests.
With all that prep done I'll try to push it to SRU review now.
** Changed in: apache2 (Ubuntu Trusty)
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/1466926
Title:
reload apache2 with mpm_event cause scoreboard is full
Status in apache2 package in Ubuntu:
Fix Released
Status in apache2 source package in Trusty:
Won't Fix
Status in apache2 source package in Xenial:
Incomplete
Status in apache2 source package in Zesty:
Fix Released
Bug description:
On the clean install Ubuntu 14.04 with Apache without almost any
client load the Apache server with the command "service apache2
reload" itself allocates slots marked with "Gracefully finishing" for
which rejects new connections.
For full rejection of new requests is sufficient to perform 4x command
"service apache2 reload".
Ubuntu 14.04.2 LTS
Apache 2.4.7-ubuntu4.4 (mpm_event)
Kernel 2.16.0-30-generic
Reproduce problem:
#################################################
1/ service apache2 start
______________________________________________________W_________
___________.....................................................
......................
2/ service apache2 reload
.........................GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGG__________________________________________________W__
______________________
3/ service apache2 reload
___W_____________________GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGG__________________________________________________...
......................
4/ service apache2 reload
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG___
W_____________________
5/ service apache2 reload -> Server Apache not responding
With logs in apache error log file:
... [mpm_event:error] [pid 9381:tid 1234563234] AH00485: scoreboard is full, not at MaxRequestWorkers
...
#################################################
My workaround was change to MPM module from "mpm_event" to "mpm_worker".
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