[Pacemaker] AP9606 fencing device

[Pavlos Parissis]

On 27 October 2010 14:09, Vadym Chepkov <vchepkov at gmail.com> wrote:

>
> On Oct 27, 2010, at 7:58 AM, Pavlos Parissis wrote:
>
>
> On 27 October 2010 13:43, Vadym Chepkov <vchepkov at gmail.com> wrote:
>
>>
>> On Oct 27, 2010, at 7:27 AM, Pavlos Parissis wrote:
>>
>> > On 27 October 2010 13:12, Vadym Chepkov <vchepkov at gmail.com> wrote:
>> >>
>> >> On Oct 27, 2010, at 3:47 AM, Pavlos Parissis wrote:
>> >>>
>> >>> Does anyone know any other PDU which works out of box with the
>> >>> supplied stonith agents?
>> >>>
>> >>
>> >> I use APC AP7901, works like a charm:
>> >>
>> >> primitive pdu stonith:external/rackpdu \
>> >>        params pduip="10.6.6.6" community="pdu-6" hostlist="AUTO"
>> >> clone fencing pdu
>> >>
>> >> Vadym
>> >
>> > Then most likely the defaults OIDs of the rackpdu agents matches the
>> > OIDs of the AP7901.
>> > In my case I have to use OID for the device itself
>> > 1.3.6.1.4.1.318.1.1.4.4.2.1.3  and OID for retrieving (snmpwalk) the
>> > outlet list .1.3.6.1.4.1.318.1.1.4.4.2.1.4 .
>> >
>> > Hold on a sec, are you using clone on AP7901? Does it support multiple
>> > connections? Mine it doesn't.
>>
>> Then it's useless regardless clone or not, you have to have multiple
>> instances, because server can't reliable fence itself, right?
>>
>>
>>
> My understanding is/was that I need to have one resource running on 1 of
> the 3 nodes in the cluster and if a fence event has to be triggered then
> pacemaker will send to it to the one stonith resource. I am planning to test
> that the coming days.[1]
> Am I right? if not then I have to buy a different PDU! :-(
>
>
> My understanding is you have to have a fencing device for each of your
> hosts. Are you sure one connection limitation applies for SNMP? Most likely
> it's only for tcp sessions - ssh/http ?
> If you look into rackpdu log you will see this:
>
> Oct 19 12:39:00 xen-11 stonithd: [8606]: debug: external_run_cmd: Calling
> '/usr/lib64/stonith/plugins/external/rackpdu gethosts'
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_run_cmd:
> '/usr/lib64/stonith/plugins/external/rackpdu gethosts' output: xen-11 xen-12
> Outlet_3 Outlet_4 Outlet_5 Outlet_6 Outlet_7 Outlet_8
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_hostlist: running
> 'rackpdu gethosts' returned 0
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_hostlist: rackpdu
> host xen-11
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_hostlist: rackpdu
> host xen-12
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_hostlist: rackpdu
> host Outlet_3
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_hostlist: rackpdu
> host Outlet_4
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_hostlist: rackpdu
> host Outlet_5
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_hostlist: rackpdu
> host Outlet_6
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_hostlist: rackpdu
> host Outlet_7
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: external_hostlist: rackpdu
> host Outlet_8
> Oct 19 12:39:01 xen-11 stonithd: [8606]: debug: remove us (xen-11) from the
> host list for pdu:0
>
> check the last line - the agent is smart enough to know it can't fence
> itself.
>
>
>
do you enable debug by setting debug 1 on ha.cf?
do you see that WARN on your system?
stonith-ng: [3369]: WARN: parse_host_line: Could not parse (0 42):
/usr/lib/stonith/plugins/external/rackpdu: line 125: local: can only be used
in a function

Cheers,
Pavlos
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