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Re: [Linux-cluster] Fencing using APC7921

James Lapthorn wrote:

Thanks for your reply James, I believe the problem with the fence_rsa was fixed in a recent update, I originally filed the bugzilla report for this. My problem on the fence_apc was similar. As a tidy up I had named all the outlets according to node they controlled. The script Appears to accept 'Outlet 1' as an acceptable menu option.

# "Device Manager", "1- Cluster Node 0   ON"
/--\s*Outlet Control.*\s+?(\d+)\s*-\s+[^\n\r]*\s*Outlet\s+$opt_n\D[^\n]*\s(?-i:ON|OFF)\*?\s/ism ||

If you think that this is still not fixed i'll file a report with Bugzilla

I am very certain it is fixed - when the new agent finally wends its way into the distribution ;) The above perl line is frightening, which is why the agent was re-written in python...I don't wish to offend anyones religion, however!

The new apc agent also handles huge powerstrips and outlet grouping as well as aliased outlet names.


James Lapthorn

On 24/04/07, *James Parsons* <jparsons redhat com <mailto:jparsons redhat com>> wrote:

    James Lapthorn wrote:

    > I use RSA II cards as my primary fencing device on my IBM 3850's.
    > After some modifications to the 'fence_rsa' script it now recognises
    > 'WMN170370264' as the default card name.

    Hi James - which version of cluster suite are you running?
    fence_rsa was
    recently modified to handle prompts other than the default...I
    wonder if
    this is what you encountered. The fix went out in the rhel5
    distribution, and will be in rhel4 update 5. If there is something
    amiss with the rsa agent, please consider filing a bugzilla for it
    - or
    maybe you could send me the patch you applied? I would like to
    keep that
    agent as current as possible.

    > My secondary fencing device is and APC Power Switch
    APC7921.  This is
    > not a Masterswitch plus so there are two APC7921's, one for each
    > supply.  When testing the the device using the following command:
    > fence_apc -a <>
    <> -l apc -p apc -n 4 -v
    > I get:
    > failed: unrecognised menu response

    In your apc fence log, the problem appears to be the agent not
    recognizing the custom names you have set up for the outlets. The
    version of the fence_apc agent (which was heavily refactored -
    completely re-written from the ground up, actually) should handle
    outlet names...the only problem is - once you change the default name
    from 'Outlet 4' to 'leoukldb3 ', you have to use that name. If you are
    running the latest agent (it is written in python instead of perl,
    the original agent), could you please try re-running the command above
    with the following args?

    fence_apc -a <>
    < <>> -l apc -p apc -n
    leoukldb3 -v ?

    If you have the older perl agent installed in /sbin with the
    distribution that you are running, then I am sorry, but the agent will
    be confused by the custom names - one way to fix it fast and test the
    fix is to telnet directly into your apc switch and change the name of
    outlet 4 to 'Outlet 4'.


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