[openstack-dev] Nova hook

Fox, Kevin M Kevin.Fox at pnnl.gov
Thu Apr 14 14:56:03 UTC 2016

Instance users....

The spec has been around for a long time.

People have been using hooks or vendor data to work around the lack of them. And both are being depricated.

Please, attend the summit session and lets address the issue.


From: Daniel P. Berrange
Sent: Thursday, April 14, 2016 1:30:30 AM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] Nova hook

On Thu, Apr 14, 2016 at 03:15:42PM +0800, Kenny Ji-work wrote:
> Hi all,​
>     The nova hooks facility will be removed in the future, now
> what's the recommended method to add custom code into the nova's
> internal APIs? Thank you for answer!

The point of removing it is that we do *not* want people to add custom
code into nova's internal APIs, so there is explicitly no replacement
for this functionality.

If you have a use case that Nova does not currently address, that is
broadly useful then you can propose a blueprint/spec to explicitly
support this in Nova, rather than doing it out of tree via a hook

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