Open Stack

Hi Ops,

I am working in OPNFV Doctor project that has the Telco perspective about host maintenance related requirements to OpenStack. Already talked some in dev mailing list and Nova team, but would like to have operator perspective and interest for maintenance related changes. Not sure where this will lead, but even a new OpenStack project to fulfil the requirements. This will be somehow also close to fault monitoring systems as these NFV related flows are very similar and also monitoring needs to be aware of the maintenance. I will also be in Austin together with other OPNFV Doctor people, if to discuss something there.

Here is link to OPNFV Doctor requirements:
http://artifacts.opnfv.org/doctor/docs/requirements/02-use_cases.html#nvfi-maintenance<http://artifacts.opnfv.org/doctor/docs/requirements/02-use_cases.html>
http://artifacts.opnfv.org/doctor/docs/requirements/03-architecture.html#nfvi-maintenance<http://artifacts.opnfv.org/doctor/docs/requirements/03-architecture.html>
http://artifacts.opnfv.org/doctor/docs/requirements/05-implementation.html#nfvi-maintenance<http://artifacts.opnfv.org/doctor/docs/requirements/05-implementation.html>

Here is what I could transfer as use cases, but would ask feedback to get more:

As admin I want to set maintenance period for certain host.

As admin I want to know when host is ready to actions to be done by admin
during the maintenance. Meaning physical resources are emptied.

As owner of a server I want to prepare for maintenance to minimize downtime,
keep capacity on needed level and switch HA service to server not affected by
maintenance.

As owner of a server I want to know when my servers will be down because of
host maintenance as it might be servers are not moved to another host.

As owner of a server I want to know if host is to be totally removed, so
instead of keeping my servers on host during maintenance, I want to move them
to somewhere else.

As owner of a server I want to send acknowledgement to be ready for host
maintenance and I want to state if servers are to be moved or kept on host.
Removal and creating of server is in owner's control already. Optionally server
Configuration data could hold information about automatic actions to be done
when host is going down unexpectedly or in controlled manner. Also actions at
the same if down permanently or only temporarily. Still this needs
acknowledgement from server owner as he needs time for application level
controlled HA service switchover.

Br,
Tomi


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