Siebel Analytics Server Administration Guide > Clustering Siebel Analytics Servers >

Components of the Cluster Server Feature

This section describes the components of the Cluster Server feature.

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. The primary Cluster Controller can reside on the same machine as an Analytics Server in the cluster or on another machine that is on the same subnet as the cluster. A machine can host one Analytics Server, one Cluster Controller, or one of each.

In the NQClusterConfig.INI file, the parameter PRIMARY_CONTROLLER specifies the machine that hosts the primary Cluster Controller.

Secondary Cluster Controller

The secondary Cluster Controller assumes the role of the primary Cluster Controller if the primary is unavailable. The secondary Cluster Controller can reside on the same machine as an Analytics Server in the cluster or on another machine that is on the same subnet as the cluster.

In the NQClusterConfig.INI file, the parameter SECONDARY_CONTROLLER specifies the machine that will host the secondary Cluster Controller. It must be different from the machine that hosts the primary Cluster Controller. Specifying a secondary Cluster Controller is optional. However, if the primary Cluster Controller is unavailable and the secondary Cluster Controller has not been configured, the cluster will not operate.

Master Server

The master server is a clustered Analytics Server to which the Analytics Administration Tool connects for online repository changes. In the NQClusterConfig.INI file, the parameter MASTER_SERVER specifies the Analytics Server that functions as the master server.

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. All servers must have read and write access to this directory.

In the NQSConfig.INI file, the REPOSITORY_PUBLISHING_DIRECTORY parameter specifies the location of the repository publishing directory.

Cluster Manager

The Cluster Manager is available in the Analytics Administration Tool when a repository is open in online mode. It allows the Analytics administrator to monitor and manage the operations and activities of the cluster.


 Siebel Analytics Server Administration Guide 
 Published: 23 June 2003