Ceilometer services don't start due to broken oslo_db requirement

[Paulo Matias]

In Newton RC1, the Ceilometer services do not start. The regression was introduced by https://github.com/openstack/ceilometer/commit/1a53514b269963028bf6082002aa32e5a3d2f842

oslo_db seems to be imported unconditionally. Even if we are not using postgresql nor mysql, it tries to import oslo_db:

$ /openstack/venvs/ceilometer-14.0.0/bin/ceilometer-polling --polling-namespaces compute --log-file=/var/log/ceilometer/ceilometer-polling.log
Traceback (most recent call last):
  File "/openstack/venvs/ceilometer-14.0.0/bin/ceilometer-polling", line 7, in <module>
    from ceilometer.cmd.polling import main
  File "/openstack/venvs/ceilometer-14.0.0/lib/python2.7/site-packages/ceilometer/cmd/polling.py", line 21, in <module>
    from ceilometer.agent import manager
  File "/openstack/venvs/ceilometer-14.0.0/lib/python2.7/site-packages/ceilometer/agent/manager.py", line 38, in <module>
    from ceilometer import pipeline
  File "/openstack/venvs/ceilometer-14.0.0/lib/python2.7/site-packages/ceilometer/pipeline.py", line 33, in <module>
    from ceilometer.event.storage import models
  File "/openstack/venvs/ceilometer-14.0.0/lib/python2.7/site-packages/ceilometer/event/storage/models.py", line 18, in <module>
    from ceilometer.storage import base
  File "/openstack/venvs/ceilometer-14.0.0/lib/python2.7/site-packages/ceilometer/storage/__init__.py", line 19, in <module>
    from oslo_db import options as db_options
ImportError: No module named oslo_db

Manually doing a "pip install oslo.db" solves the issue.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/372010

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/372148

[OpenStack Infra (hudson-openstack)]

Change abandoned by venkatamahesh (<email address hidden>) on branch: master
Review: https://review.openstack.org/372010
Reason: Submitted by some other

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/371955
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_ceilometer/commit/?id=ea89da7febdd71ef21d6634bc16fae88013b0dc3
Submitter: Jenkins
Branch: master

commit ea89da7febdd71ef21d6634bc16fae88013b0dc3
Author: Kevin Carter <email address hidden>
Date: Sat Sep 17 11:37:51 2016 -0500

    Add OSLO DB the ceilometer requirements

    This change adds ``oslo.db`` to the pip install requirements
    list which is works around an issue within ceilometer where
    the service is unconditionally importing this library even if
    its not being used.

    Closes-bug: #1624692
    Change-Id: Ib8119b39cdbce42d1d803c17612a9627daeee4dd
    Signed-off-by: Kevin Carter <email address hidden>

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/newton
Review: https://review.openstack.org/373392

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/373392
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=78be95bd02c8951771e919ad5f7141d7d66751d2
Submitter: Jenkins
Branch: stable/newton

commit 78be95bd02c8951771e919ad5f7141d7d66751d2
Author: Julien Danjou <email address hidden>
Date: Sun Sep 18 19:11:43 2016 +0200

    Move oslo.db to hard requirements list

    The options from oslo.db are also used by other storage drivers such as
    MongoDB, which makes it mandatory even for this backend.

    Change-Id: I3b09cffca1285ff92c0c7492b5b48c6a560251e5
    Closes-Bug: #1624692

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/372148
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=fae8caee14963e1d8b031897004a39a38f0a2795
Submitter: Jenkins
Branch: master

commit fae8caee14963e1d8b031897004a39a38f0a2795
Author: Julien Danjou <email address hidden>
Date: Sun Sep 18 19:11:43 2016 +0200

    Move oslo.db to hard requirements list

    The options from oslo.db are also used by other storage drivers such as
    MongoDB, which makes it mandatory even for this backend.

    Change-Id: I3b09cffca1285ff92c0c7492b5b48c6a560251e5
    Closes-Bug: #1624692

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/ceilometer 7.0.0.0rc2 release candidate.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/ceilometer 7.0.0 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/ceilometer 8.0.0 release.