This topic describes the process of starting the repository server cluster.
In most cases, it is not necessary to apply any clustering-specific configuration - just starting the servers will result in a cluster.
Let's suppose you have two cluster members on IP addresses, 10.244.50.101 and 10.244.50.102.
Upon starting the first member, you should see the log message similar to the one shown below:
2013-08-05 17:06:31,794 INFO [cluster.core.ClusteringBootstrap] [Thread-3] Cluster started,
name: MainRepository-2c0aa5c6-e38a-4f64-bd29-1a7cf9894350
2013-08-05 17:06:31,797 INFO [cluster.core.ClusteringBootstrap] [Thread-3] Current cluster members:
10.244.50.101:5701 (hostname: repo1.local)
This
shows that a cluster name has been automatically generated, based on the repository name
(MainRepository) and a UUID (a random/ unique identifier). Finally, the cluster
has been started and the cluster members are listed. As shown in the log message above, only one
cluster member is present currently.Upon starting the second member, you should see the log message similar to the one shown
below:
2013-08-05 17:06:58,350 INFO [cluster.core.ClusteringBootstrap] [Thread-3] Cluster started,
name: MainRepository-2c0aa5c6-e38a-4f64-bd29-1a7cf9894350
2013-08-05 17:06:58,353 INFO [cluster.core.ClusteringBootstrap] [Thread-3] Current cluster members:
10.244.50.102:5701 (hostname: repo2.local)
10.244.50.101:5701 (hostname: repo1.local)
This log message shows that both the servers are now members of the same cluster.
Note: When
starting up a clustered environment, the nodes in the cluster should be started in a rolling
start, such that each node is fully started before the next is started in the cluster. This
prevents any resource/load concurrency conflicts.