[openstack-dev] [tripleo][puppet] Running custom puppet manifests during overcloud post-deployment

Dan Prince dprince at redhat.com
Thu Apr 2 14:34:29 UTC 2015

On Wed, 2015-04-01 at 21:31 -0400, Tzu-Mainn Chen wrote:
> Hey all,
> I've run into a requirement where it'd be useful if, as an end user, I could inject
> a personal ssh key onto all provisioned overcloud nodes.
> Obviously this is something that not every user would need or want.  I talked about
> some options with Dan Prince on IRC, and (besides suggesting that I bring the
> discussion to the mailing list) he proposed some generic solutions - and Dan, please
> feel free to correct me if I misunderstood any of your ideas.
> The first is to specify a pre-set custom puppet manifest to be run when the Heat
> stack is created by adding a post_deployment_customizations.pp puppet manifest to
> be run by all roles.  Users would simply override this manifest.
> The second solution is essentially the same as the first, except we'd perform
> the override at the Heat resource registry level: the user would update the
> resource reference to point to a their custom manifest (rather than overriding
> the default post-deployment customization manifest).
> Do either of these solutions seem acceptable to others?  Would one be preferred?

Talking about this a bit more on IRC this morning we all realized that
Puppet isn't a hard requirement. Just simply providing a pluggable
mechanism to inject this sort of information into the nodes in a clean
way is all we need.

Steve Hardy's suggestion here is probably the cleanest way to support
this sort of configuration in a generic fashion.


I don't believe this solution runs post deployment however. So if
running a hook post deployment is a requirement we may need to wire in a
similar generic config parameter for that as well.


> Thanks,
> Tzu-Mainn Chen
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