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The Server Manager is a small module that is part of the nqscomgateway.exe process. It is only used while running on UNIX. It controls the start/stop/restart of the nqsserver.exe process. In the NQClusterConfig.INI file the SERVER_MANAGER_PORT parameter specifies the port number to use for communication.
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 a 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.
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 a 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.
The master server is a clustered Analytics Server to which the 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.
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. The master server must have read and write access to this publishing directory.
|Siebel Business Analytics Server Administration Guide|