[openstack-dev] [nova] Device tagging: rebuild config drive upon instance reboot to refresh metadata on it

Jay Pipes jaypipes at gmail.com
Mon Feb 20 15:02:33 UTC 2017

On 02/17/2017 07:05 PM, Clint Byrum wrote:
> Excerpts from Michael Still's message of 2017-02-18 09:41:03 +1100:
>> We have had this discussion several times in the past for other reasons.
>> The reality is that some people will never deploy the metadata API, so I
>> feel like we need a better solution than what we have now.
>> However, I would consider it probably unsafe for the hypervisor to read the
>> current config drive to get values, and persisting things like the instance
>> root password in the Nova DB sounds like a bad idea too.
> Agreed. What if we simply have a second config drive that is for "things
> that change" and only rebuild that one on reboot?

Or not.

Why are we trying to reinvent configuration management systems in Nova?


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