Configuring HA groups for DR/HA RDQMs
You must create an HA group on both your main and recovery sites. If you have an existing HA group on either site, you can create DR/HA RDQMs in that HA group. (Existing RDQMs will continue to operate as before.)
The procedure is the same as described for RDQM high availability, see Defining the Pacemaker cluster (HA group).
When defining a high availability group you specify the IP addresses used for monitoring and replication by each node in the rdqm.ini file. When creating an HA group to support DR/HA RDQMs you can also specify the IP addresses used for DR replication by the HA group you are defining, and the IP addresses used for DR replication by the nodes in the other HA group of the DR pair. (If you do not specify the DR replication IP addresses in the rdqm.ini file, you can specify them in the command line when you create a DR/HA RDQM.)
If you are configuring an existing HA group, you can add DR replication IP addresses to your existing rdqm.ini file. You do not need to run rdqmadm again after updating rdqm.ini, but you must update rdqm.ini before you create any DR/HA RDQMs.
DR_Replication
attribute in the Node
stanzas to specify
the DR replication interfaces on the HA group that you are defining, for
example:Node:
Name=Node1
HA_Replication=192.168.0.1
DR_Replication=192.168.1.1
Node:
Name=Node2
HA_Replication=192.168.0.2
DR_Replication=192.168.1.2
Node:
Name=Node3
HA_Replication=192.168.0.3
DR_Replication=192.168.1.3
DRGroup
stanza to specify the DR replication addresses of the remote HA
group, for
example:DRGroup:
Name=DR1
DR_Replication=192.168.2.1
DR_Replication=192.168.2.2
DR_Replication=192.168.2.3
If you do not specify DR replication IP addresses for the nodes in the local HA group in either
the rdqm.ini file or on the command line when you create a DR/HA RDQM, then the
HA_Replication
interfaces defined for each node are used for DR replication. You
must specify remote HA group DR replication addresses either in the rdqm.ini
file or on the crtmqm command line.