[Pacemaker] Another question about fencing/stonithing

[Andreas Mock]

Hi Digimer,

sorry I forget to mention that I implemented the metadata-call
accordingly. But it may be the "registration" thing which
is necessary to make it know to the stonith/fencing daemon.

I don't know. I'm wondering a little bit that there is no
pointer how to do it.

Thank you for your answer!

Best regards
Andreas Mock


-----Ursprüngliche Nachricht-----
Von: Digimer [mailto:lists at alteeve.ca] 
Gesendet: Freitag, 5. Juli 2013 16:52
An: The Pacemaker cluster resource manager
Cc: Andreas Mock; Marek Grac
Betreff: Re: [Pacemaker] Another question about fencing/stonithing

On 05/07/13 03:34, Andreas Mock wrote:
> Hi all,
>
> I just wrote a stonith agent which IMHO implements the
> API spec found at https://fedorahosted.org/cluster/wiki/FenceAgentAPI.
>
> But it seems it has a problem when used as pacemaker stonith device.
>
> What has to be done, to have a stonith/fencing agent which implements
> both roles. I'm pretty sure something is missing.
> It's just a guess that it has something to do with listing "registered"
> agents.
>
> What is a registered stonith agent and what is done while registering it?
>
> When I configure my own fencing agent as packemaker stonith device
> and try to do a "stonith_admin --list=nodename" I get a "no such device"
> error.
>
> Any pointer appreciated.
>
> Best regards
> Andreas Mock

The API doesn't (yet) cover the metadata action. The agents now have to 
print out XML validation of valid attributes and elements for your 
agent. If you call any existing fence_* agent with just -o metadata, you 
will see the format.

I know rhcs can be forced to see the new agent by putting it in the same 
directory as the other agents and then running 'ccs_update_schema'. If 
pacemaker doesn't immediately see it, then there might be an equivalent 
command you can run.

I will try to get the API updated. I'm not a cardinal source, but 
something is better than nothing. Marek (who I have cc'ed) is, so I can 
run the changes by him when done to ensure they're accurate.

-- 
Digimer
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