[openstack-dev] [Nova] Configuration validation

John Garbutt john at johngarbutt.com
Mon Nov 11 11:55:57 UTC 2013

I like the idea of a more general config validation phase to help
people when first starting out.

My worry is that it would slow down the starting back up of servers
for people deploying their code using CI, where the have already
verified their configuration. But maybe its so fast I don't care, but
I just felt I should raise that.


On 11 November 2013 11:44, Nikola Đipanov <ndipanov at redhat.com> wrote:
> Hey all,
> During the summit session on the the VMWare driver roadmap, a topic of
> validating the passed configuration prior to starting services came up
> (see [1] for more detail on how it's connected to that specific topic).
> Several ideas were thrown around during the session mostly documented in
> [1].
> There are a few more cases when something like this could be useful (see
> bug [2] and related patch [3]), and I was wondering if a slightly
> different approach might be useful. For example use an already existing
> validation hook in the service class [4] to call into a validation
> framework that will potentially stop the service with proper
> logging/notifications. The obvious benefit would be that there is no
> pre-run required from the user, and the danger of running a
> misconfigured stack is smaller.
> Since there is already a blueprint raised based on the etherpad [1]- I
> am bringing this up here so that we can agree on the approach, before
> raising another one to solve the same problem.
> Thanks,
> Nikola
> [1] https://etherpad.openstack.org/p/T4tQMQf5uS
> [2] https://bugs.launchpad.net/nova/+bug/1243614
> [3] https://review.openstack.org/#/c/53303/
> [4] http://git.openstack.org/cgit/openstack/nova/tree/nova/service.py#n283
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