On 09/06/2013, at 12:19 PM, Xiaomin Zhang <zhangxiao...@gmail.com> wrote:
> Hello, Pacemaker Gurus: > My HA (2 active/slave nodes and 1 standby node) setup contains 1 DRBD > master/slave resource group, and 1 simple lsb resource. I configure some > location constraints to prefer the active node, and I also want > resource-stickiness to the actual online node to avoid unnecessary switchover. > The expected topology is as below: > > ms_drbd_ssn > | > fs_ssn > | > ip_ssn > | > ssn ip_sst > \ / > \ / > sst > The ip_ssn and ip_sst are two independent VIPs, and sst service depends on > both ip_sst and ssn. At the same time, I prefer ssn and sst to be initially > started on node1, so that node1 should have two VIPs at resource startup. > This setup almost works, except below 2 issues: > 1. when the failed node is online again, all the resource are restarted, > this is totally unnecessary > 2. when failover from node1 to node2, all resources will be started on > node2, however, when node1 is online again, the sst service will failback to > node1, which is not I want. > My pacemaker version is 1.1.7-6.el6 and setup on CentOS6.3. > Is my setup not well configured as expected? > Could you please share your thoughts about it? > Any advice is pretty appreciated. Try increasing your stickiness as it is being exceeded by the location constraints. For the biggest stick, try 'infinity' which means - never move unless the node dies. > Thanks. > > Below is my configure: > ------------------CONFIG START-------------------------------------- > node node3 \ > attributes standby="on" > node node1 > node node2 > primitive drbd_ssn ocf:linbit:drbd \ > params drbd_resource="r0" \ > op monitor interval="15s" > primitive fs_ssn ocf:heartbeat:Filesystem \ > op monitor interval="15s" \ > params device="/dev/drbd0" directory="/drbd" fstype="ext3" \ > meta target-role="Started" > primitive ip_ssn ocf:heartbeat:IPaddr2 \ > params ip="192.168.241.1" cidr_netmask="32" \ > op monitor interval="15s" \ > meta target-role="Started" > primitive ip_sst ocf:heartbeat:IPaddr2 \ > params ip="192.168.241.2" cidr_netmask="32" \ > op monitor interval="15s" \ > meta target-role="Started" > primitive sst lsb:sst \ > op monitor interval="15s" \ > meta target-role="stopped" > primitive ssn lsb:ssn \ > op monitor interval="15s" \ > meta target-role="stopped" > ms ms_drbd_ssn drbd_ssn \ > meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" > notify="true" target-role="Started" > location sst_ip_prefer ip_sst 50: node1 > location drbd_ssn_prefer ms_drbd_ssn 50: node1 > colocation fs_ssn_coloc inf: ip_ssn fs_ssn > colocation fs_on_drbd_coloc inf: fs_ssn ms_drbd_ssn:Master > colocation sst_ip_coloc inf: sst ip_sst > colocation ssn_ip_coloc inf: ssn ip_ssn > order ssn_after_drbd inf: ms_drbd_ssn:promote fs_ssn:start > order ip_after_fs inf: fs_ssn:start ip_ssn:start > order sst_after_ip inf: ip_sst:start sst:start > order sst_after_ssn inf: ssn:start sst:start > order ssn_after_ip inf: ip_ssn:start ssn:start > property $id="cib-bootstrap-options" \ > dc-version="1.1.8-7.el6-394e906" \ > cluster-infrastructure="classic openais (with plugin)" \ > expected-quorum-votes="3" \ > stonith-enabled="false" > rsc_defaults $id="rsc-options" \ > resource-stickiness="100" > > -------------------CONFIG END---------------------------------------- > > Best Regards. > Xiaomin > > > _______________________________________________ > 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 _______________________________________________ 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
