[Pacemaker] Trouble getting fence_apc working on RHEL 6.1

Andrew Beekhof andrew at beekhof.net
Tue Jul 19 00:09:30 UTC 2011


On Tue, Jul 19, 2011 at 10:03 AM, Digimer <linux at alteeve.com> wrote:
> On 07/18/2011 08:02 PM, Andrew Beekhof wrote:
>> On Tue, Jul 19, 2011 at 9:42 AM, Digimer <linux at alteeve.com> wrote:
>>> On 07/18/2011 07:26 PM, Andrew Beekhof wrote:
>>>> On Mon, Jul 18, 2011 at 7:07 AM, Uwe Grawert <grawert at b1-systems.de> wrote:
>>>>> 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.
>>>>
>>>> Mostly right. The pcmk_host_map argument _should_ mean port is set to an int.
>>>> If not its a bug.  port=TBA is only to shut the shell up.
>>>
>>> Any feedback on what might be wrong with my config? :)
>>
>> Configs look fine, but the logs don't go back far enough.
>> I need to see the device being added to stonith-ng.
>
> I'll delete it, restart pacemaker, start tailing the logs and then add
> it again. I'll put the logs up and reply to this as soon as that is done.

Btw. crm_report




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