On 8 May 2014, at 1:37 pm, renayama19661...@ybb.ne.jp wrote: > Hi All, > > I composed Master/Slave resource of three nodes that set > quorum-policy="freeze". > (I use Stateful in Master/Slave resource.) > > --------------------------------- > Current DC: srv01 (3232238280) - partition with quorum > Version: 1.1.11-830af67 > 3 Nodes configured > 9 Resources configured > > > Online: [ srv01 srv02 srv03 ] > > Resource Group: grpStonith1 > prmStonith1-1 (stonith:external/ssh): Started srv02 > Resource Group: grpStonith2 > prmStonith2-1 (stonith:external/ssh): Started srv01 > Resource Group: grpStonith3 > prmStonith3-1 (stonith:external/ssh): Started srv01 > Master/Slave Set: msPostgresql [pgsql] > Masters: [ srv01 ] > Slaves: [ srv02 srv03 ] > Clone Set: clnPingd [prmPingd] > Started: [ srv01 srv02 srv03 ] > --------------------------------- > > > Master resource starts in all nodes when I interrupt the internal > communication of all nodes. > > --------------------------------- > Node srv02 (3232238290): UNCLEAN (offline) > Node srv03 (3232238300): UNCLEAN (offline) > Online: [ srv01 ] > > Resource Group: grpStonith1 > prmStonith1-1 (stonith:external/ssh): Started srv02 > Resource Group: grpStonith2 > prmStonith2-1 (stonith:external/ssh): Started srv01 > Resource Group: grpStonith3 > prmStonith3-1 (stonith:external/ssh): Started srv01 > Master/Slave Set: msPostgresql [pgsql] > Masters: [ srv01 ] > Slaves: [ srv02 srv03 ] > Clone Set: clnPingd [prmPingd] > Started: [ srv01 srv02 srv03 ] > (snip) > Node srv01 (3232238280): UNCLEAN (offline) > Node srv03 (3232238300): UNCLEAN (offline) > Online: [ srv02 ] > > Resource Group: grpStonith1 > prmStonith1-1 (stonith:external/ssh): Started srv02 > Resource Group: grpStonith2 > prmStonith2-1 (stonith:external/ssh): Started srv01 > Resource Group: grpStonith3 > prmStonith3-1 (stonith:external/ssh): Started srv01 > Master/Slave Set: msPostgresql [pgsql] > Masters: [ srv01 srv02 ] > Slaves: [ srv03 ] > Clone Set: clnPingd [prmPingd] > Started: [ srv01 srv02 srv03 ] > (snip) > Node srv01 (3232238280): UNCLEAN (offline) > Node srv02 (3232238290): UNCLEAN (offline) > Online: [ srv03 ] > > Resource Group: grpStonith1 > prmStonith1-1 (stonith:external/ssh): Started srv02 > Resource Group: grpStonith2 > prmStonith2-1 (stonith:external/ssh): Started srv01 > Resource Group: grpStonith3 > prmStonith3-1 (stonith:external/ssh): Started srv01 > Master/Slave Set: msPostgresql [pgsql] > Masters: [ srv01 srv03 ] > Slaves: [ srv02 ] > Clone Set: clnPingd [prmPingd] > Started: [ srv01 srv02 srv03 ] > --------------------------------- > > I think even if the cluster loses Quorum, being "promote" the Master / Slave > resource that's specification of Pacemaker. > > Is it responsibility of the resource agent side to prevent a state of these > plural Master?
No. In this scenario, no nodes have quorum and therefor no additional instances should have been promoted. Thats the definition of "freeze" :) Even if one partition DID have quorum, no instances should have been promoted without fencing occurring first. > * I think that drbd-RA has those functions. > * But, there is no function in Stateful-RA. > * As an example, I think that the mechanism such as drbd is necessary by all > means when I make a resource of Master/Slave newly. > > Will my understanding be wrong? > > Best Regards, > Hideo Yamauchi. > > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org
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