[Pacemaker] votequorum for 2 node cluster

Christine Caulfield ccaulfie at redhat.com
Thu Jun 12 05:37:54 EDT 2014

On 12/06/14 00:51, Andrew Beekhof wrote:
> Chrissy?  Can you shed some light here?
> On 11 Jun 2014, at 11:26 pm, Kostiantyn Ponomarenko <konstantin.ponomarenko at gmail.com> wrote:
>> Hi guys,
>> I am trying to deal somehow with split brain situation in 2 node cluster using votequorum.
>> Here is a quorum section in my corosync.conf:
>> provider: corosync_votequorum
>> expected_votes: 2
>> wait_for_all: 1
>> last_man_standing: 1
>> auto_tie_breaker: 1
>> My question is about behavior of the remaining node after I shout down node with the lowest nodeid.
>> My expectation is that after a last_man_standing_window this node should be back working.
>> Or in the case of two node cluster it is not a solution?

If you want symmetric failure handing into a 2 node cluster then the 
two_node option might be more appropriate. auto_tie_breaker and 
last_man_standing are more useful for larger clusters where a network 
split leaves more than one node in a partition.


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