Re: FBR: MBS upgrade
On 15 September 2017 at 15:24, Ralph Bean <rbean(a)redhat.com> wrote:
> That is a major code change on a Friday. What is the DB upgrade
parts
> and if there are further changes/problems what is the backout plan?
The db change is here: https://pagure.io/fm-orchestrator/pull-request/686#_1,18
Two new added columns.
The MBS (like many of our other apps) uses `alembic` to manage db migrations. The plan
to upgrade involves using this playbook, which will use `mbs-upgradedb` (a small wrapper
around alembic).
https://infrastructure.fedoraproject.org/cgit/ansible.git/tree/playbooks/...
Thanks that helps me evaluate the change.
If it fails, I'll back it out with `alembic downgrade -1`.
If *that* fails, having the additional columns shouldn't hurt anything, so we can
downgrade the software but keep the advanced schema until we figure out how to resolve
that (likely manual sql statements, but it shouldn't come to that[1]).
-Ralph
[1] - He says on a Friday afternoon, he says.
Turns off pager/phone/etc.
+1
:)
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--
Stephen J Smoogen.