Nova compute needs a config option for resume_guests_state_on_host_boot

[David Ames]

Kilo's default for resume_guests_state_on_host_boot is False [1]. Any time a compute node is rebooted all the instances are in a Shutdown state until started by a human. This is somewhat opposite of expected behaviour.

The nova-compute charm should have a configurable resume_guests_state_on_host_boot option.

[1] http://docs.openstack.org/kilo/config-reference/content/list-of-compute-config-options.html

[David Ames (thedac)]

For continuity the default for resume_guests_state_on_host_boot should remain False.

The example has been given of cold migrating instances off of a crashed/broken compute note. Then one would not want instances spun up automatically.

The configuration option at the discretion of the administrator is what this bug is aiming at.

[Billy Olsen (billy-olsen)]

As a work around to actually having the option on the charm, since the resume_guests_state_on_host_boot option lives within the [DEFAULT] config section, the config-flags option can be set to include this value.

[James Page (james-page)]

I think it would be also nice to complement this with an action to help a
cloud admin restart all of the instances that where running on a compute
host which has been rebooted.

On Thu, Nov 12, 2015 at 10:14 PM, Billy Olsen <email address hidden>
wrote:

> As a work around to actually having the option on the charm, since the
> resume_guests_state_on_host_boot option lives within the [DEFAULT]
> config section, the config-flags option can be set to include this
> value.
>
> --
> You received this bug notification because you are a member of OpenStack
> Charmers, which is subscribed to nova-compute in Juju Charms Collection.
> https://bugs.launchpad.net/bugs/1515783
>
> Title:
> Nova compute needs a config option for
> resume_guests_state_on_host_boot
>
> Status in nova-compute package in Juju Charms Collection:
> Triaged
>
> Bug description:
> Kilo's default for resume_guests_state_on_host_boot is False [1].
> Any time a compute node is rebooted all the instances are in a
> Shutdown state until started by a human. This is somewhat opposite of
> expected behaviour.
>
> The nova-compute charm should have a configurable
> resume_guests_state_on_host_boot option.
>
> [1] http://docs.openstack.org/kilo/config-reference/content/list-of-
> compute-config-options.html
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/charms/+source/nova-compute/+bug/1515783/+subscriptions
>

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/422311

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/422311
Committed: https://git.openstack.org/cgit/openstack/charm-nova-compute/commit/?id=1b9290d047432d704546c201376d75cc5dca304c
Submitter: Jenkins
Branch: master

commit 1b9290d047432d704546c201376d75cc5dca304c
Author: Dmitrii Shcherbakov <email address hidden>
Date: Thu Jan 19 00:55:33 2017 +0300

    Add an ability to configure resume_guests_state_on_host_boot

    resume_guests_state_on_host_boot can be set to 'true' in order to
    restore the state of instances after a nove-compute node is restarted.

    Closes-Bug: 1515783

    Change-Id: Ifa5347db123773fc07800d653a72ced14e3891ea
    Signed-off-by: Dmitrii Shcherbakov <email address hidden>