[openstack-dev] [Ironic] Manual scheduling nodes in maintenance mode

Lucas Alvares Gomes lucasagomes at gmail.com
Fri Mar 14 12:01:46 UTC 2014

On Wed, Mar 12, 2014 at 8:07 PM, Chris Jones <cmsj at tenshu.net> wrote:

> Hey
> I wanted to throw out an idea that came to me while I was working on
> diagnosing some hardware issues in the Tripleo CD rack at the sprint last
> week.
> Specifically, if a particular node has been dropped from automatic
> scheduling by the operator, I think it would be super useful to be able to
> still manually schedule the node. Examples might be that someone is
> diagnosing a hardware issue and wants to boot an image that has all their
> favourite diagnostic tools in it, or they might be booting an image they
> use for updating firmwares, etc (frankly, just being able to boot a
> generic, unmodified host OS on a node can be super useful if you're trying
> to crash cart the machine for something hardware related).
> Any thoughts? :)

+1 I like the idea and think it's quite useful.

Drivers in Ironic already expose a rescue interface[1] (which I don't think
we had put much thoughts into it yet) perhaps the PXE driver might
implement something similar to what you want to do here?

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