httpd fails to start due to nova workers (still) incorrectly set

[Steven Hardy]

I deployed a new undercloud, and it has the https://review.openstack.org/#/c/385078/3/puppet/services/nova-api.yaml fix

I still see the nova httpd conf is wrong:

WSGIDaemonProcess nova-api group=nova processes=0 threads=2 user=nova

in /etc/httpd/conf.d/10-nova_api_wsgi.conf

This causes httpd to fail to start.

I suspect there may be a problem with the patch referenced above, and it's not tested in CI because we explicitly override NovaWorkers to 1 to save memory.

https://github.com/openstack/tripleo-heat-templates/blob/master/environments/low-memory-usage.yaml#L9

[Steven Hardy (shardy)]

[root@overcloud-controller-0 ~]# hiera nova::wsgi::apache::workers
0
[root@overcloud-controller-0 ~]# hiera nova::api::osapi_compute_workers
nil

Perhaps we set the wrong workers key?

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/387598

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/387598
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=4c500c680a190466fb051c0c2209160db3c9dfcf
Submitter: Jenkins
Branch: master

commit 4c500c680a190466fb051c0c2209160db3c9dfcf
Author: Steven Hardy <email address hidden>
Date: Mon Oct 17 19:02:41 2016 +0100

    Add apache workers to nova-api conditional

    Without this httpd fails to start on deployments where the
    worker count isn't explicitly overridden via a parameter.

    Change-Id: Ie7b31bc6e022a0166af126c866994bdd019718df
    Closes-Bug: #1634213

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-heat-templates 6.0.0.0b1 development milestone.