2.3.3 Examining cluster configurations
The system administrator examines whether to employ a cluster configuration in order to increase the system's capacity. For Performance Management, the supported cluster configuration differs depending on the product. The supported cluster configurations are indicated as follows:
- Cluster configuration of PFM - Manager
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PFM - Manager supports clusters in the active-standby configuration. Either the executing node or the standby node can be executed. If the executing node malfunctions, a failover occurs and the standby node takes over the processing.
- Cluster configuration of PFM - Web Console
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PFM - Web Console supports clusters in the active-standby configuration. Either the executing node or the standby node can be executed. If the executing node malfunctions, a failover occurs and the standby node takes over the processing.
- Cluster configuration of PFM - Base
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PFM - Base supports clusters in the active-active configuration. If PFM - Agent or PFM - RM is installed on a PFM - Base host, you can configure the cluster environment so that PFM - Base can be used together with that installed PFM - Agent or PFM - RM.
- Cluster configuration of PFM - Agent
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The cluster configuration for PFM - Agent differs depending on the programs being monitored. For example, because PFM - Agent for Oracle, which monitors an Oracle database, supports the active-standby configuration, if the executing node malfunctions, a failover occurs and the standby node takes over the processing.
- Cluster configuration for PFM - RM
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The cluster configuration for PFM - RM differs depending on the programs being monitored. For example, because PFM - RM for Platform, which monitors the OS on the server, supports the active-standby configuration, if the executing node malfunctions, a failover occurs and the standby node takes over the processing.
For details about clusters for PFM - Manager and PFM - Web Console, see the chapter that describes the cluster system configuration and operation in the JP1/Performance Management User's Guide. For details about clusters for PFM - Agents or PFM - RM, see the chapters that describe operations on cluster systems in the appropriate PFM - Agent or PFM - RM manual.
- Note:
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Performance Management does not support the following cluster configurations:
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A cluster configuration where Performance Management is operated by both a physical host and a logical host that share the same name
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A cluster configuration where the physical host is renamed when a failover occurs
To operate Performance Management in a cluster system, you must set different names for the physical host and the logical host on the node forming the cluster.
To run Performance Management on a cluster containing a physical host and logical host that share the same name, you must use the function for setting monitoring-host names in order to define a unique name for the physical host. For details about the function for setting monitoring-host names, for Windows see 4.3.3 Specifying and changing the monitoring host name in a Performance Management system, and for UNIX see 5.3.3 Specifying and changing the monitoring host name in a Performance Management system.
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