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Key Components of an Analytics Server Cluster

Figure 2 shows a typical small cluster server setup. A small cluster consists of the following components:

• Primary Cluster Controller. The role of the primary cluster controller is to monitor the operation of the servers in the cluster and to assign sessions within the cluster.
• Secondary Cluster Controller. The secondary cluster controller assumes the role of the primary cluster controller if the primary controller is unavailable.
• Master Server. The master server is a clustered Analytics Server to which the Administration Tool connects for online repository changes.
• Cluster Manager. The Cluster Manager is available in the Administration Tool when a repository is open in online mode. Server nodes can be stopped, started and quiesced from the Cluster Manager.
• Repository Publishing Directory. This directory is shared by all Analytics Servers participating in a cluster. It holds the master copies of repositories edited in online mode. The Clustered Analytics Servers examine this directory upon startup for any repository changes. The directory typically resides on a shared file system visible to all servers in the cluster.

  Figure 2.  A Typical Cluster Controller Setup