Disable or enable a high availability manager

 

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A unique HAManagerService configuration object exists for every core group member. The enable attribute in this configuration object determines if the high availability manager is enabled or disabled for the corresponding process. When the enable attribute is set to true, the high availability manager is enabled. When the enable attribute is set to false, the high availability manager is disabled. By default, the high availability manager is enabled. If the setting for the enable attribute is changed, the corresponding process must be restarted before the change goes into effect. You must use the wsadmin tool to disable or enable a high availability manager.

 

Before you begin

 

About this task

You might want to disable a high availability manager if you are trying to reduce the amount of resources, such as CPU and memory, that WAS uses and have determined that the high availability manager is not required on some or all of the processes in a core group.

You might need to enable a high availability manager that you previously disabled because you are installing applications on core group members that must be highly available.

You must use the wsadmin tool to disable a high availability manager or to enable a high availability manager that you previously disabled.

 

Procedure

  1. Start the wsadmin tool.

  2. Start the deployment manager for the cell that contains the high availability manager that you are disabling or enabling. The deployment manager for this cell must be running for the sample script to work.

  3. Use the wsadmin tool to issue the following command to start the script:

    wsadmin.sh -lang jython -f script_file_name node process_name 
    

    For example, to start the sample script for the WASDOCLNodePH02 node and the ClusterMember2 process, issue the following command:

    wsadmin.sh -lang jython -f disableHamOnProcess.pty WASDOCLNodePH02 ClusterMember2 
    

  4. Synchronize this change across all of the affected nodes.

  5. Restart all of the processes for which the setting of the enable attribute in the HAManagerService configuration object is changed.

 

Results

The processes start with the high availability manager in the changed state.


Related tasks
Starting the wsadmin scripting client Setting up a high availability environment Related reference
When to use a high availability manager

 



 

 

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