Appendix F. Replication High Availability Configuration Elements

check-for-live-server

Applies only to brokers configured as master brokers. Specifies whether the original master broker checks the cluster for another live broker using its own server ID when starting up. Set to true to fail back to the original master broker and avoid a "split brain" situation in which two brokers become live at the same time. The default value of this property is false.

cluster-name

Name of the cluster configuration to use for replication. This setting is only necessary if you configure multiple cluster connections. If configured, the the cluster configuration with this name will be used when connecting to the cluster. If unset, the first cluster connection defined in the configuration is used.

group-name

If set, backup brokers will only pair with live brokers that have a matching value for group-name.

initial-replication-sync-timeout

The amount of time the replicating broker will wait upon completion of the initial replication process for the replica to acknowledge that it has received all the necessary data. The default value of this property is 30,000 milliseconds, or 30 seconds.

max-saved-replicated-journals-size

Applies to backup brokers only. Specifies how many backup journal files the backup broker retains. Once this value has been reached, the broker makes space for each new backup journal file by deleting the oldest journal file. The default value of this property is 2.

allow-failback

Applies to backup brokers only. Determines whether the backup broker resumes its original role when another broker such as the live broker makes a request to take its place. The default value of this property is true.

restart-backup

Applies to backup brokers only. Determines whether the backup broker automatically restarts after it fails back to another broker. The default value of this property is true.