[Linux-cluster] Fencing issues with fence_apc_snmp (APC Firmware 6.x)

[Digimer]

On 13/10/14 03:10 PM, Thomas Meier wrote:
> Hi
>
> When configuring PDU fencing in my 2-node-cluster I ran into some problems with
> the fence_apc_snmp agent. Turning a node off works fine, but
> fence_apc_snmp then exits with error.
>
>
>
> When I do this manually (from node2):
>
>     fence_apc_snmp -a node1 -n 1 -o off
>
> the output of the command is not an expected:
>
>     Success: Powered OFF
>
> but in my case:
>
>     Returned 2: Error in packet.
>     Reason: (genError) A general failure occured
>     Failed object: .1.3.6.1.4.1.318.1.1.4.4.2.1.3.21
>
>
> When I check the PDU, the port is without power, so this part works.
> But it seems that the fence agent can't read the status of the PDU
> and then exits with error. The same seems to happen when fenced
> is calling the agent. The agent also exits with an error and fencing can't succeed
> and the cluster hangs.
>
>>From the logfile:
>
>      fenced[2100]: fence node1 dev 1.0 agent fence_apc_snmp result: error from agent
>
>
> My Setup: - CentOS 6.5 with fence-agents-3.1.5-35.el6_5.4.x86_64 installed.
>            - APC AP8953 PDU with firmware 6.1
>            - 2-node-cluster based on https://alteeve.ca/w/AN!Cluster_Tutorial_2
>            - fencing agents in use: fence_ipmilan (working) and fence_apc_snmp
>
>
> I did some recherche, and for me it looks like that my fence-agents package is too old for my APC firmware.
>
> I've already found the fence-agents repo: https://git.fedorahosted.org/cgit/fence-agents.git/
>
> Here https://git.fedorahosted.org/cgit/fence-agents.git/commit/?id=55ccdd79f530092af06eea5b4ce6a24bd82c0875
> it says: "fence_apc_snmp: Add support for firmware 6.x"
>
>
> I've managed to build fence-agents-4.0.11.tar.gz on a CentOS 6.5 test box, but my build
> of fence_apc_snmp doesn't work.
>
> It gives:
>
> [root at box1]# fence_apc_snmp -v -a node1 -n 1 -o status
> Traceback (most recent call last):
>    File "/usr/sbin/fence_apc_snmp", line 223, in <module>
>      main()
>    File "/usr/sbin/fence_apc_snmp", line 197, in main
>      options = check_input(device_opt, process_input(device_opt))
>    File "/usr/share/fence/fencing.py", line 705, in check_input
>      logging.getLogger().addHandler(logging.StreamHandler(stream=sys.stderr))
> TypeError: __init__() got an unexpected keyword argument 'stream'
>
>
> I'd really like to see if a patched fence_apc_snmp agent fixes my problem, and if so,
> install the right version of fence_apc_snmp on the cluster without breaking things,
> but I'm a bit clueless how to build me a working version.
>
>
> Maybe you have some tips?
>
>
>
> Thanks in advance
>
> Thomas

Hi Marek et. al.,

   This is a RHEL 6.5 install, so Kristoffer's comment about needing a 
newer version of python is a bit of a concern. Has this been tested on 
RHEL 6 with an APC with the 6.x firmware?

cheeps

-- 
Digimer
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