Clustering

Several Liberators can be configured into a cluster.

A cluster enables a group of Liberators to act as one, in order to monitor licence use and the numbers of users logged on. Client applications can also publish data to a cluster, for example when using the chat facility, so the data’s available to other clients that use Liberators in the cluster.

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Cluster heartbeats

The Liberators forming a cluster exchange heartbeat messages at regular intervals, allowing each of them to check that all the others are still present. If a Liberator’s cluster heartbeat times out, it waits a configurable time and then disconnects from the cluster and tries to reconnect to it. For more about this, see cluster-heartbeat-time and cluster-heartbeat-slack-time in Liberator Clustering configuration

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