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Re: [Linux-cluster] Two node cluster without quorum disk



2009/4/22 Ralph Zukeb <ralphzukeb gmail com>:
> 2009/4/22 Mark Watts <m watts eris qinetiq com>:
>>
>> On Wednesday 22 April 2009 11:14:49 Ralph Zukeb wrote:
>>> 2009/4/22 Mrugesh Karnik <mrugeshkarnik gmail com>:
>>> > On Wednesday 22 Apr 2009 15:25:32 Ralph Zukeb wrote:
>>> >> Hello again! Thanks for the tips so far.
>>> >>
>>> >> How can I ensure that the node holding the services and resources in a
>>> >> two node cluster keeps holding them if the two nodes cannot see each
>>> >> other?
>>> >>
>>> >> I am not using a quorum disk.
>>> >
>>> > <cman two_nodes="1" expected_votes="1"/>
>>> >
>>> > Make sure you configure fencing properly though. Also, getting rid of the
>>> > two_node attribute requires a full cluster restart.
>>> >
>>> > Mrugesh
>>>
>>> I tried this, but when I killed the switch for the cluster traffic,
>>> BOTH nodes got fenced! Can I avoid this?
>>
>> Don't kill the switch like that - you're causing a split brain.
>> Use two switches and multiple interfaces (bonding) to provide network
>> redundancy.
>>
>> Mark.
>
> I have bonding, but both network paths go over the same physical
> cable. I want to simulate a cable cut or a switch dying along this
> stretch of cable.
>

Maybe I can specify a different fencing delay per host?


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