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Creating a dynamic cluster of ODRs

You can create a dynamic cluster of on demand routers (ODRs), which means that the application placement controller selects the best node on which to start the minimum number of ODRs. If an ODR stops for any reason, the application placement controller will then start a new instance.

Before you begin

  • The size of an ODR dynamic cluster will not currently increase beyond the minimum number of instances.
  • Before running the manageODR.py script, ensure that you have the WAS_HOME environment variable configured to point to the directory of your WebSphere® installation.
  • When an ODR is a member of a cluster, routing rules and other configuration settings that are set at the ODR level are ignored. Configuration settings at the cluster level take precedence over any configuration settings at the server level.
  • For Session Initiation Protocol (SIP), an ODR cluster defines the other ODRs to which an ODR can route. An ODR might route a UDP message to another ODR to guarantee that server affinity is maintained in the case that the UDP message is a retransmission.
避免困難 避免困難: The SIP ODR is stabilized, and is currently not recommended. Use the SIP proxy server instead.gotcha

About this task

You can configure a dynamic cluster isolation policy to prevent ODRs from running on the same node with application servers. You can use the administrative console, or you can run the manageODR.py script to create ODR dynamic clusters. You can also set a cell-level custom property to enable elasticity mode for ODR dynamic clusters.

Procedure

What to do next

  • After you create your ODR dynamic clusters, you can manage them from the Dynamic clusters panel in the administrative console. Click Servers > Clusters > Dynamic clusters.
  • Monitor performance with reports and operations tabs. Click Servers > Clusters > Dynamic clusters > ODR_dynamic_cluster. Select the Reports tab or the Operations tab.

指出主題類型的圖示 作業主題



時間戳記圖示 前次更新: July 9, 2016 11:18
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