On 19/03/15 13:31 +0100, Chmouel Boudjnah wrote:
Hello,While on a long oversea flight with Sebastien Han we were talking how he had implemented ceph-docker with central configuration over etcd. We quickly came up to the conclusion that if we wanted to have that in Kolla it would be neat if it was done straight from oslo.config so that would quickly override the default keys in a central point. There is multiple advantage to use that method not just for containers but as well to avoid issues when orchestrating an openstack deployment. I have heard arguments that this should be the job of an ansible/puppet/chef tool and while I completely agree I just don't think it has to write to files the tool would just write to the etcd database. I have quickly came up with a quick and dirty POC on oslo.cfg here : https://github.com/chmouel/oslo.config/commit/ 01ee54dd5219b1434eaac422055b58e77694d89f and the demo : https://gist.github.com/chmouel/05fb715f96344161268c What others thinks about it ?
IIRC, we had a talk about this in the past but it didn't go anywhere. I personally like the idea and I believe it'd be useful for other deployments too.
I believe if we wanted to do that we would have to add a stevesdor based modular backend support directly to oslo.cfg first and have an etcd backend implemented.
+1 This however won't remove the need of a config file. For instance, plugins like etcd's will need the host/port options to be set somewhere - or passed as a cli parameter. Flavio
Chmouel PS: I am using etcd here cause it's easy and fancy but this could be any backends like a DB/NoSQL/Swift or whatever if we wanted
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-- @flaper87 Flavio Percoco
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