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



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.


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