To create a replica queue, the HA module must be loaded on both the original and replica brokers (it is loaded by default.) You also need to set the configuration option:

	ha-queue-replication=yes
      

to enable this feature on a stand-alone broker. It is automatically enabled for brokers that are part of a cluster.

Suppose that myqueue is a queue on node1 and we want to create a replica of myqueue on node2 (where both brokers are using the default AMQP port.) This is accomplished by the command:

	qpid-config --broker=node2 add queue --start-replica node1 myqueue
      

If myqueue already exists on the replica broker you can start replication from the original queue like this:

	qpid-ha replicate -b node2 node1 myqueue
      

You can replicate queues between two standalone brokers, between a standalone broker and a cluster, or between two clusters (see Section 1.12, “Active-Passive Messaging Clusters”.) For failover in a cluster there are two cases to consider.

start() {
    service qpidd start
    echo -n $"Promoting qpid daemon to cluster primary: "
    ################################
    #### Add your commands here ####
    ################################
    $QPID_HA -b localhost:$QPID_PORT promote
    [ "$?" -eq 0 ] && success || failure
}