[Pacemaker] Trouble getting fence_apc working on RHEL 6.1

[Uwe Grawert]

Am 17.07.11 22:49, schrieb Digimer:
> On 07/17/2011 04:36 PM, Uwe Grawert wrote:
>> Am 17.07.11 20:32, schrieb Digimer:
>>> I've been trying to get my APC switched PDU working with Pacemaker using
>>> Red Hat's fence_apc fence agent. The agent itself works fine. I can
>>> fence nodes using:
>>>
>>> fence_na -a 192.168.1.6 -l apc -p secret -n 1 -o reboot
>>>
>>> When I try to fence using CRM though, I get these two errors:
>>>
>>> st_output="Parse error: Ignoring unknown option
>>> 'nodename=an-node02.alteeve.com'#012Failed: Unable to obtain correct
>>> plug status or plug is not available#012"
>>>
>>> The configuration is:
>>>
>>> # crm configure show
>>> node an-node01.alteeve.com \
>>> 	attributes standby="off"
>>> node an-node02.alteeve.com \
>>> 	attributes standby="off"
>>> primitive apc-fencing stonith:fence_apc \
>>> 	params \
>>> 	pcmk_host_map="an-node01.alteeve.com:1,an-node02.alteeve.com:2" \
>>> 	pcmk_host_list="an-node01.alteeve.com an-node02.alteeve.com" \
>>> 	pcmk_host_check="static-list" \
>>> 	ipaddr="192.168.1.6" \
>>> 	action="reboot" \
>>> 	login="apc" \
>>> 	passwd="secret" \
>>> 	port="TBA" \
>>> 	property $id="cib-bootstrap-options" \
>>> 	dc-version="1.1.5-5.el6-01e86afaaa6d4a8c4836f68df80ababd6ca3902f" \
>>> 	cluster-infrastructure="openais" \
>>> 	expected-quorum-votes="2" \
>>> 	stonith-enabled="true"
>>>
>>> The full log file and the 'pe-warn' file are quite long and would wrap
>>> badly in email. So I've put them up here:
>>>
>>> http://wiki.alteeve.com/index.php/CRM_troubles
>>>
>>> Any idea what magic I am missing? :)
>>
>> Pacemaker is adding following parameters: option, nodename, port,
>> additionally to the ones you have configured. The nodename parameter is
>> not the problem, it is ignored. But you have a port parameter defined:
>> port="TBA". That one is getting overwritten with the node's name to
>> fence. I had the same issue with fence_bladecenter agent and had to
>> patch it.
>>
>> I wrote an email to this list a month ago. Subject: "Pacemaker
>> additional parameters on stonith plugins"
>>
>> But there was no big fuzz ;)
> 
> As I understood it, the:
> 
> pcmk_host_map="an-node01.alteeve.com:1,an-node02.alteeve.com:2"
> 
> was supposed to provide the name -> port mapping when port="TBA" is
> used... Did you get a config working?

I used a different fencing agent. But the problem is, that your
configuration of the port parameter port="TBA" will be overwritten and
endup looking like this: port="an-node02.alteeve.com". And that will
break the fence agent.