I'm trying to setup a pair of LDAP servers running 389 (formerly Fedora DS) in high availability using Pacemaker with a floating IP. In addition, 389 supports multi-master replication, where all changes on one node are automatically replicated on one or more other nodes.
I'm fairly close to having everything working. Failover works just fine. And multi-master replication works fine. However, my current Pacemaker config stops the directory service on the non-active node. Which means that the backup node is not receiving replication data from the other node. What is the right way to setup Pacemaker so that: 1) LDAP directory services are always running on both nodes 2) Floating IP is assigned to one of the nodes 3) Failover occurs if the master node dies or LDAP service stops running on the master Initially, my Pacemaker config looked like the following: ---snip--- property stonith-enabled=false property no-quorum-policy=ignore rsc_defaults resource-stickiness=100 primitive elastic_ip lsb:elastic-ip op monitor interval="10s" primitive dirsrv lsb:dirsrv op monitor interval="10s" order dirsrv-after-eip inf: elastic_ip dirsrv colocation dirsrv-with-eip inf: dirsrv elastic_ip ---snip--- I then explored using Pacemaker clones: ---snip--- property stonith-enabled=false property no-quorum-policy=ignore rsc_defaults resource-stickiness=100 primitive elastic_ip lsb:elastic-ip op monitor interval="10s" primitive ldap lsb:dirsrv op monitor interval="15s" role="Slave" timeout="10s" op monitor interval="16s" role="Master" timeout="10s" ms ldap-clone ldap meta master-max=1 master-node-max=1 clone-max=3 clone-node- max=1 notify-true colocation ldap-with-eip inf: elastic_ip ldap-clone:Master order eip-after-promote inf: ldap-clone:promote elastic_ip:start order ldap-after-eip inf: elastic_ip ldap-clone ---snip--- Unfortunately, that doesn't quite work. pengine complains that "ldap-clone: Promoted 0 instances of a possible 1 to master" and then stops the LDAP service. I'm sure I'm missing something simple... any suggestions would be greatly appreciated. _______________________________________________ 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://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
