[openstack-dev] [oslo][kolla][openstack-helm][tripleo][all] Storing configuration options in etcd(?)
clint at fewbar.com
Wed Mar 15 06:16:37 UTC 2017
Excerpts from Monty Taylor's message of 2017-03-15 04:36:24 +0100:
> On 03/14/2017 06:04 PM, Davanum Srinivas wrote:
> > Team,
> > So one more thing popped up again on IRC:
> > https://etherpad.openstack.org/p/oslo.config_etcd_backend
> > What do you think? interested in this work?
> > Thanks,
> > Dims
> > PS: Between this thread and the other one about Tooz/DLM and
> > os-lively, we can probably make a good case to add etcd as a base
> > always-on service.
> As I mentioned in the other thread, there was specific and strong
> anti-etcd sentiment in Tokyo which is why we decided to use an
> abstraction. I continue to be in favor of us having one known service in
> this space, but I do think that it's important to revisit that decision
> fully and in context of the concerns that were raised when we tried to
> pick one last time.
> It's worth noting that there is nothing particularly etcd-ish about
> storing config that couldn't also be done with zk and thus just be an
> additional api call or two added to Tooz with etcd and zk drivers for it.
Combine that thought with the "please have an ingest/export" thought,
and I think you have a pretty operator-friendly transition path. Would
be pretty great to have a release of OpenStack that just lets you add
an '[etcd]', or '[config-service]' section maybe, to your config files,
and then once you've fully migrated everything, lets you delete all the
other sections. Then the admin nodes still have the full configs and
one can just edit configs in git and roll them out by ingesting.
(Then the magical rainbow fairy ponies teach our services to watch their
config service for changes and restart themselves).
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