Bug 1417645

Changing to ON_DEV - work already in progress.

Add OS-brick gerrit, track all the cinder containerization patches here:

- cinder API
- iscsid
- multipathd
- cinder volume
- cinder scheduler
- cinder backup

Moving back to ON_DEV as we've identified 3 patches that are required for the
feature to work. 

[1] and [2] are required for HA, are already on stable/pike, and just need to
be pulled down to osp-12.

[3] was recently posted to upstream master. This is why ON_DEV and not POST.

[1] https://review.openstack.org/518854
[2] https://review.openstack.org/518855
[3] https://review.openstack.org/520787

(In reply to Alan Bishop from comment #11)
> Moving back to ON_DEV as we've identified 3 patches that are required for the
> feature to work. 
> 
> [1] and [2] are required for HA, are already on stable/pike, and just need to
> be pulled down to osp-12.
> 
> [3] was recently posted to upstream master. This is why ON_DEV and not POST.
> 
> [1] https://review.openstack.org/518854
> [2] https://review.openstack.org/518855
> [3] https://review.openstack.org/520787

[4] https://review.openstack.org/521102

(this is stable/pike version of [3])

I was asked to summarize a few key points regarding this RFE.

- In a stock OSP-12 deployment, most services are containerized but cinder
  services are not. I do not believe OSP-12 supports a completely non-
  containerized deployment (everything on baremetal).
- You enable the containerized cinder feature by overriding a handful of
  TripleO Heat resources used to deploy the overcloud.
  - You do not control the feature by making post-deployment configuration
    changes.
  - It's best to use a fresh deployment, and not try to update an existing
    overcloud deployment.

You enable containerized cinder services by including the following lines in
an existing THT environment file, or by creating a new file and referencing it
in your overcloud deployment command:

resource_registry:
  OS::TripleO::Services::CinderApi: /usr/share/openstack-tripleo-heat-templates/docker/services/cinder-api.yaml
  OS::TripleO::Services::CinderScheduler: /usr/share/openstack-tripleo-heat-templates/docker/services/cinder-scheduler.yaml
  OS::TripleO::Services::CinderVolume: /usr/share/openstack-tripleo-heat-templates/docker/services/cinder-volume.yaml
  OS::TripleO::Services::Iscsid: /usr/share/openstack-tripleo-heat-templates/docker/services/iscsid.yaml

The next issue is ensuring the required containers are available for the
deployment. TripleO Pike deployments require you supply a file that specifies
the docker container image name and registry location for all containerized
services. Upstream documentation [1] describes how to create this file, and
the file is automatically generated by deployment tools like
TripleO Quickstart and Infrared. I do not know what the downstream (OSP)
documentation looks like, or how the information should be conveyed to
partners who are using this RFE to develop containerized versions of their
own cinder drivers.

[1] https://docs.openstack.org/tripleo-docs/latest/install/containers_deployment/overcloud.html

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2017:3462