[openstack-dev] [Fuel][Keystone][mod_wsgi] A summary for the A/A HA issues had been fixed

Bogdan Dobrelya bdobrelia at mirantis.com
Fri Aug 21 14:10:27 UTC 2015

On 21.08.2015 15:57, Bogdan Dobrelya wrote:
> Our deployment automation teams have been addressing the critical issues
> arised for HA A/A Keystone switched to the mod_wsgi and related
> backends' failure modes.
> We ran numerous rally tests against different configuration layouts for
> Apache2 MPM worker versus Keystone and HAProxy backend config versus
> deprecated eventlet case. Raw results [0] - no pretty view, sorry.
> We made a conclusion based on the tests results [1] and there are couple
> bug fixes on review [2], [3]. Another related bug fix was merged for the
> apache 2 control plane [4]. This reduces an amount of undesired main
> Apache process restarts at deploy stage and provides better availability
> for the keystone HAProxy backends.
> As a result, the situation looks stable now and there are no issues left
> for the Keystone under mod_wsgi. Thank you all who participated for a
> hard work done.
> [0] https://goo.gl/Hi25QG
> [1] https://review.openstack.org/212439
> [2] https://review.openstack.org/209589
> [3] https://review.openstack.org/209924

Fixed the links

[0] https://goo.gl/Hi25QG
[1] https://etherpad.openstack.org/p/keystone_wsgi_measuring
[2] https://review.openstack.org/212439
[3] https://review.openstack.org/209589
[4] https://review.openstack.org/209924

Best regards,
Bogdan Dobrelya,
Irc #bogdando

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