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[tripleo] Plan around switching Podman to default


Sorry I forgot to mention Standalone, but it's in the same situation as
Overcloud.
Let's keep Docker by default on both until CentOS8 is out.

On Thu, Feb 14, 2019 at 11:48 AM Emilien Macchi <emilien at redhat.com> wrote:

> Pacemaker provided by CentOS7 doesn't work with Podman, and only works
> with Docker.
>
> Podman is already the default on the Undercloud, and this is fine, as we
> don't deploy Pacemaker on this node.
> However for the Overcloud, it causes problem as upstream is tested on
> CentOS7 and downstream is being tested on RHEL8.
>
> With that said, I propose that we:
> - Keep Docker as the default on the Overcloud until CentOS8 is out.
> - Switch downstream to use Podman on the Overcloud (since we run RHEL8
> it's fine).
> - Switch all CI jobs except OVB to NOT deploy Pacemaker and switch to
> Podman.
> - Once CentOS8 is out, we revert the downstream only patch and land it
> upstream.
>
> Any feedback / concerns are welcome.
> --
> Emilien Macchi
>


-- 
Emilien Macchi
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