[docs] improve cluster manual recovery documentation

[Andrew Woodward]

docs/pages/frequently-asked-questions/0040-corosync-crashes.rst is not sufficient to restart the cluster. It needs to be extended and probably moved to it's own section "operations guide". It should be complete enough to recover the cluster from a crashed state.

[Nikolay Markov (nmarkov)]

Is there any progress on this? Seems like a little fix.

[Andrew Woodward (xarses)]

This is not duplicate, this is to convert internal wiki page to public docs for manual cluster rebuild, the autorebuild process is separate from doing it manually.

[Dmitry Ilyin (idv1985)]

I'll write this

[Andrew Woodward (xarses)]

From https://bugs.launchpad.net/fuel/+bug/1290075/comments/1

Mike Scherbakov (mihgen) wrote on 2014-03-10:
From Micah:
> One of the big holes we have is how to recover from a power outage type event. Starting the cloud from it being down, and not shutdown gracefully. We do not have any working steps for that, nor have found anyone who has such steps.

This services list might be helpful: https://docs.google.com/a/mirantis.com/spreadsheet/ccc?key=0Au_vGfPxE7BUdDEtMHB4VlJvV3RjQ2dTMHpILVNfUWc#gid=0wq

[Bogdan Dobrelya (bogdando)]

related BP https://blueprints.launchpad.net/fuel/+spec/cold-restart-improvements
depends on BP https://blueprints.launchpad.net/fuel/+spec/reliable-galera-ocf-script

[Pavel Vaylov (pvaylov)]

Hi team !

How the bug was fixed ? Do we have an article in doc's (I do not see it in docs) ?

Even more: We do not have a "cluster full shutdown procedure". So I have created a bug report for it https://bugs.launchpad.net/fuel/+bug/1406523

[Irina Povolotskaya (ipovolotskaya)]

Started working on a new bug, reported by Pavel V (see the link above, please).

[Meg McRoberts (dreidellhasa)]

Thanks for the heads-up -- this is an important topic and it
should be fun.

But I don't see this on the Trello board -- is there a reason
nobody but me is putting things there? I admit that I don't
completely understand how this is all going to work so I
just thought I would ask...

I look forward to reviewing what you write,
meg

On Tue, Jan 20, 2015 at 10:16 AM, Irina <email address hidden> wrote:

> Started working on a new bug, reported by Pavel V (see the link above,
> please).
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1250572
>
> Title:
> [docs] improve cluster manual recovery documentation
>
> Status in Fuel: OpenStack installer that works:
> Fix Committed
>
> Bug description:
> docs/pages/frequently-asked-questions/0040-corosync-crashes.rst is not
> sufficient to restart the cluster. It needs to be extended and
> probably moved to it's own section "operations guide". It should be
> complete enough to recover the cluster from a crashed state.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/fuel/+bug/1250572/+subscriptions
>

[Michele Fagan (michelefagan)]

Closing this bug. Duplicate of Bug #1406523. Fix was committed and released. "How to shut down the whole cluster" including starting up the cluster and restarting the OpenStack services is now in the Operations Guide.