[Group.of.nepali.translators] [Bug 1466926] Re: reload apache2 with mpm_event cause scoreboard is full
Xenial has reached its end of standard support. ** Changed in: apache2 (Ubuntu Xenial) Status: Triaged => Won't Fix -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs 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: Won't Fix Status in apache2 source package in Zesty: Fix Released Bug description: [Impact] * apache2 reload can fill up the scorecard with graceful reastarting workers to an amount that it is unable to serve more requests. * Backport fix from upstream to avoid the issue [Test Case] * In comment #8 I outlined some steps to fill up the scorecard with Gracefully stopping processes. But that never triggered the reported bug of eventually breaking new requests for me (It is still good to verify some busy tests on this part of the apache code) -> Therefore one of the reporters of the bug tested the ppa quite a while on his main machines that formerly were affected by the issue. -> no clear "do this then X happens" test case steps * Perform arbitrary additional functional tests on the package to make sure no regressions are visible [Regression Potential] * It is a rather complex code change in the mpm event handling. Only the first change is to code, the other two are for the documentation to match. We tested some apache benchmarks to check the effect, but found neither a positive nor negative impact in general (other than the bug being resolved). Yet if people rely on very specific behavior of the mpm handling that might change a bit. It will change for the good of it, but always remember xkcd.com/1172 TL;DR: IMHO it clearly has a ">none" regression potential on the mpm event handling [Other Info] * Since this is hard to test we had a 2+ week test on the ppa, see comments c#8 - c#15 * It clearly is a fix for some (e.g. the reporter of the bug), but I'd understand if the SRU Team would rate it as feature and deny it for an SRU - depends on the POV, certainly worth to be reviewed at least. 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 .GGG GGG__W__ __ 3/ service apache2 reload ___W_GGG GGG__... .. 4/ service apache2 reload G___ 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". To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1466926/+subscriptions ___ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
[Group.of.nepali.translators] [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 -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs 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 .GGG GGG__W__ __ 3/ service apache2 reload ___W_GGG GGG__... .. 4/ service apache2 reload G___ 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". To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1466926/+subscriptions ___ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
[Group.of.nepali.translators] [Bug 1466926] Re: reload apache2 with mpm_event cause scoreboard is full
** Also affects: apache2 (Ubuntu Zesty) Importance: Undecided Status: New ** Changed in: apache2 (Ubuntu Zesty) Status: New => Fix Released -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs 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: Confirmed Status in apache2 source package in Xenial: Confirmed 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 .GGG GGG__W__ __ 3/ service apache2 reload ___W_GGG GGG__... .. 4/ service apache2 reload G___ 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". To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1466926/+subscriptions ___ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
[Group.of.nepali.translators] [Bug 1466926] Re: reload apache2 with mpm_event cause scoreboard is full
** Also affects: apache2 (Ubuntu Xenial) Importance: Undecided Status: New ** Also affects: apache2 (Ubuntu Trusty) Importance: Undecided Status: New ** Changed in: apache2 (Ubuntu Xenial) Status: New => Confirmed ** Changed in: apache2 (Ubuntu Trusty) Status: New => Confirmed -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs 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: Confirmed Status in apache2 source package in Xenial: Confirmed 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 .GGG GGG__W__ __ 3/ service apache2 reload ___W_GGG GGG__... .. 4/ service apache2 reload G___ 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". To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1466926/+subscriptions ___ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
