[Pacemaker] Manual fence confirmation by stonith_admin doesn't work again.

Andrew Beekhof andrew at beekhof.net
Tue Jan 7 18:10:15 EST 2014

On 19 Dec 2013, at 6:54 pm, Nikita Staroverov <nsforth at gmail.com> wrote:

>> Please see:
>> https://access.redhat.com/site/articles/36302
>> If you don't have an account, the relevant part is:
>> "Usage of fence_manual is not supported in any production cluster. You may use this fence agent for development or debugging purposes only."
> I wrote about fence_ack_manual, not about fence_manual. fence_ack_manual isn't a fence agent, it's confirmation tool like stonith_admin -C.
>>> 2. Pacemaker notifies CMAN about  real fencing, why not about manual
>>> confirmations? It's bug, i'm sure.

There is no-one to tell yet.
We have to wait for cman to decide something needs fencing before pacemaker can perform the notification.

>> Perhaps, I can't speak to pacemaker's behaviour.
> Ok. I'll think that it's not a bug, but feature request.
>>> 3. I use real fencing. Manual fencing needed in rare situations, like
>>> problem with IPMI controller, lost power or so. What should
>>> administrator do without manual confirmations? :)
>> Fencing should loop until it succeeds. Fix the problem, fence_ack_manual if that's not possible or, ideally, use multiple fence methods (I use IPMI on one switch and switched PDUs on another switch for redundancy).
> I have two datacenters joined with fast links, i have syncronous replication so server groups in two separate datacenters forms clusters.
> if one campus burned with own fencing devices in a whole how i must fix this?
> In some situations administrator needs of simple and fast manual confirmation or it's not a high availability.
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