wrong log rotation of Nagios WSGI application logs

[Swann Croiset]

The WSGI application handling the passive checks in front of Nagios is hosted by a custom apache2-nagios service (managed by Pacemaker).
The corresponding HTTP log are produced here /var/log/apache2/nagios_wsgi_access.log

Expected behavior:
the logs nagios_wsgi_(access|error).log are well rotated

Actual result:
the logs nagios_wsgi_access.log are rotated (/etc/logrotate.d/apache2.conf)
but the custom apache2 process is not aware about this log rotation and then continues to log in the rotated log (eg nagios_wsgi_access.log.1) because the rotation is made by "copy-truncate".

Fix:

* make WSGI application log into /var/nagios/nagios_wsgi_access.log
* add a dedicated logrotate configuration for this file and restart gracefully apache2-nagios resource

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/390366

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/390366
Committed: https://git.openstack.org/cgit/openstack/fuel-plugin-lma-infrastructure-alerting/commit/?id=7c3997b8b9a87d3d267a46d165a135bac3a2f251
Submitter: Jenkins
Branch: master

commit 7c3997b8b9a87d3d267a46d165a135bac3a2f251
Author: Swann Croiset <email address hidden>
Date: Mon Oct 24 16:54:07 2016 +0200

    Configure logrotate for WSGI logs

    Change-Id: I1f0692d85c24687d3a51ee09ce082e3544fd7317
    Closes-Bug: #1635222

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/1.0
Review: https://review.openstack.org/390580

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/0.10
Review: https://review.openstack.org/390581

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/390580
Committed: https://git.openstack.org/cgit/openstack/fuel-plugin-lma-infrastructure-alerting/commit/?id=53ca3fa482c6c54101248a73318ca99fe1e8bdb6
Submitter: Jenkins
Branch: stable/1.0

commit 53ca3fa482c6c54101248a73318ca99fe1e8bdb6
Author: Swann Croiset <email address hidden>
Date: Mon Oct 24 16:54:07 2016 +0200

    Configure logrotate for WSGI logs

    Change-Id: I1f0692d85c24687d3a51ee09ce082e3544fd7317
    Closes-Bug: #1635222
    (cherry picked from commit 7c3997b8b9a87d3d267a46d165a135bac3a2f251)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/390581
Committed: https://git.openstack.org/cgit/openstack/fuel-plugin-lma-infrastructure-alerting/commit/?id=1e81d7f37624deee7a10135851d54b3cee51756b
Submitter: Jenkins
Branch: stable/0.10

commit 1e81d7f37624deee7a10135851d54b3cee51756b
Author: Swann Croiset <email address hidden>
Date: Mon Oct 24 16:54:07 2016 +0200

    Configure logrotate for WSGI logs

    Change-Id: I1f0692d85c24687d3a51ee09ce082e3544fd7317
    Closes-Bug: #1635222
    (cherry picked from commit 7c3997b8b9a87d3d267a46d165a135bac3a2f251)

[Vitaly Gusev (vgusev)]

Verified on 0.10.3 version.