[Pacemaker] Full API description for Fence Agent

[Andrew Beekhof]

On 04/07/2013, at 9:52 PM, Andreas Mock <Andreas.Mock at web.de> wrote:

> Hi Andrew,
> 
> is there some kind of agreement how to tag a message?
> Like (DEBUG/TRACE/ERROR/WARN)?

No.  But pacemaker obeys the general convention of "errors to stderr, everything else to stdout".

> Is there a way message level filtering is done?

There is no filtering.

> 
> Best regards
> Andreas
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: Andrew Beekhof [mailto:andrew at beekhof.net] 
> Gesendet: Donnerstag, 4. Juli 2013 13:41
> An: The Pacemaker cluster resource manager
> Betreff: Re: [Pacemaker] Full API description for Fence Agent
> 
> 
> On 04/07/2013, at 7:24 PM, Andreas Mock <Andreas.Mock at web.de> wrote:
> 
>> Hi digimer,
>> 
>> I would like to take your offer and asking the following:
>> 
>> The API documents says nothing about the correct way
>> of giving messages back to the stonith daemon.
>> So, what is the right way to write error/warn/info messages.
>> 
>> Looking at the scripted agents available I can find a nice
>> mixture of using STDERR and STDOUT.
>> What is the rule here?
>> Can you give insights, whether STDOUT/STDERR is captured by
>> the calling program and logged somewher (and where)?
> 
> In the case of pacemaker, we capture and log both.
> 
>> 
>> By the way: How is it going with merging the stonith/fencing API? ;-)
>> 
>> Best regards
>> Andreas
>> 
>> -----Ursprüngliche Nachricht-----
>> Von: Digimer [mailto:lists at alteeve.ca] 
>> Gesendet: Dienstag, 11. Juni 2013 15:34
>> An: The Pacemaker cluster resource manager
>> Cc: Andreas Mock
>> Betreff: Re: [Pacemaker] Full API description for Fence Agent
>> 
>> Hi Andreas,
>> 
>>  The metadata section of the document has not been added yet, but we 
>> are aware of it missing and are working to add it. The rest of the 
>> document is accurate though. If you build an agent to follow that API, 
>> it will work with red hat's cluster and pacemaker.
>> 
>>  In the meantime, it's not ideal, but if you call any other fence 
>> agent and pass '-o metadata', you will see the output that the cluster 
>> expects. It should be easy to adapt to your new agent.
>> 
>>  If you have any trouble, please don't hesitate to ask here and we 
>> will do our best to help.
>> 
>> digimer
>> 
>> On 06/11/2013 07:04 AM, Andreas Mock wrote:
>>> Hi all,
>>> 
>>> we need to implement a fence_agent (stonith agent) for
>>> cman/corosync/pacemaker (RHEL 6.x). I found the following documentation
>>> https://fedorahosted.org/cluster/wiki/FenceAgentAPI
>>> 
>>> But in this document the required metadata action is not
>>> described. Can anybody point me to a documentation which
>>> is complete?
>>> 
>>> Where is the schema of the xml returned by 'metadata'?
>>> 
>>> What has to be done that a fence_agent can also be used
>>> by pacemaker?
>>> 
>>> What is the right return code of action 'metadata'?
>>> 
>>> Is there some explanation how the stonith/fence parts
>>> play together?
>>> 
>>> Best regards
>>> Andreas Mock
>>> 
>>> 
>>> 
>>> 
>>> 
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>>> 
>> 
>> 
>> -- 
>> Digimer
>> Papers and Projects: https://alteeve.ca/w/
>> What if the cure for cancer is trapped in the mind of a person without 
>> access to education?
>> 
>> 
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>> 
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> 
> 
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> 
> 
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> 
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