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Hi,

A better Q would be why do you shutdown a compute node to begin with?
I mean if you need you should do so in an orderly fashion basically
excavate instances
or shut instances down manually, put the compute node in maintenance mode.
On rebooting compute node remove it from maintenance mode, turn on
instances or migrate them back to this compute node should you need.
Od delete them if you wish.

There is this nova option:
resume_guests_state_on_host_boot=true

But it doesn't delete or shutdown instances but rather turns them on
automatically once compute host resumes.
which might also work for you, probably not just mentioning it any way.

I don't know of an option to stop/delete instance on compute node shutdown.

Another option check maybe you could shelve suspended instance and then
later delete them.

Shelving stops the instance and takes a snapshot of it. Then depending on
the value of the shelved_offload_time config option, the instance is
deleted from the hypervisor (0), never deleted (-1), or deleted after some
period of time (> 0). Note that it's just destroying the backing instance
on the hypervisor, the actual instance in the nova database is not deleted.
Then you can later unshelve the instance:


This might help, but do not if you mess with kvm without updating Nova you
might be left haning else where :)
https://ask.fedoraproject.org/en/question/8796/make-libvirt-to-shutdown-my-guests-not-suspend/




On Thu, Nov 2, 2017 at 9:03 AM, Chris <contact at progbau.de> wrote:

> Hello,
>
> When we shut down a compute node the instances running on it get
> suspended. This generates some difficulties with some applications like
> RabbitMQ dont like to be suspended. Is there a way to change this behavior
> so that the running instances gets killed or shutdown instead?
>
> Thanks in advance.
>
> Cheers,
> Chris
>
> _______________________________________________
> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstac
> k
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> k
>



-- 

Tzach Shefi

Senior Quality Engineer, RHCSA

Red Hat

<https://www.redhat.com>

tshefi at redaht.com    M: +972-54-4701080     IM: tshefi
<https://red.ht/sig>
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