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On Fri, Jun 09, 2017 at 07:58:44PM +0000, Jeremy Stanley wrote:
> On 2017-06-07 14:26:10 +0800 (+0800), Xinliang Liu wrote:
> [...]
> > we already have our own pre-built debian cloud image, could I just
> > use it and not use the one built by diskimage-builder?
> [...]
> 
> The short answer is that nodepool doesn't currently have support for
> directly using an image provided independent of its own image build
> process. Clark was suggesting[*] in IRC today that it might be
> possible to inject records into Zookeeper (acting as a "fake"
> nodepool-builder daemon basically) to accomplish this, but nobody
> has yet implemented such a solution to our knowledge.
> 
> Longer term, I think we do want a feature in nodepool to be able to
> specify the ID of a prebuilt image for a label/provider (at least we
> discussed that we wouldn't reject the idea if someone proposed a
> suitable implementation). Just be aware that nodepool's use of
> diskimage-builder to regularly rebuild images is intentional and
> useful since it ensures images are updated with the latest packages,
> kernels, warm caches and whatever else you specify in your elements
> so reducing job runtimes as they spend less effort updating these
> things on every run.
> 
> [*] <URL: http://eavesdrop.openstack.org/irclogs/%23openstack-infra/%23openstack-infra.2017-06-09.log.html#t2017-06-09T15:32:27-2 >
> -- 
> Jeremy Stanley

Actually, I think 458073[1] aims to fix this use case.  I haven't tired it
myself but it adds support for using images which are not built and managed by
nodepool.

This is currently only on feature/zuulv3 branch.

[1] https://review.openstack.org/#/c/458073/

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