Switching the master domain manager to the new backup master

About this task

The graphic indicates the current step: switching the master domain manager to the new backup master

To switch the back-level master domain manager to the new backup master domain manager, complete the following procedure:

Procedure

  1. Start WebSphere Application Server Liberty Base on the new backup master domain manager by running the startAppServer script found in the following path: 
    <TWA_HOME>/appservertools/startAppServer.sh
  2. Before you switch your master domain manager to the new backup master domain manager, you must stop the dynamic workload broker server on the current back-level master domain manager:
    On Windows™ operating systems
    Use wastool stopBrokerApplication.bat
    On UNIX® operating systems
    Use wastool stopBrokerApplication.sh
  3. Switch to your new backup master domain manager, which now becomes your current active master domain manager, by issuing the following command from either the Dynamic Workload Console or the command line of your old master domain manager:
    From the Dynamic Workload Console
    In the navigation tree, click Monitoring and Reporting > Monitor Workload > select the engine and the object type Workstation, click run and, in the table of results, select backup master domain manager workstation name, click More Actions, and select Become Master Domain Manager.
    From the command line of the old master domain manager
    Issue the following command: 
    conman "switchmgr masterdm;new_mgr_cpu"
    where new_mgr_cpu is the backup master domain manager workstation name.
  4. Switch the event processor from the old master domain manager to the backup master domain manager, by running the following command from either the Dynamic Workload Console or the command line of your old master domain manager:
    From the Dynamic Workload Console
    In the navigation tree, click Monitoring and Reporting > Monitor Workload > select the engine and the object type Workstation, click run and, in the table of results, select backup master domain manager workstation name, click More Actions, and select Become Event Processor.
    From the command line of the old master domain manager
    Issue the following command: 
    conman "switcheventprocessor new_mgr_cpu"
    where new_mgr_cpu is the backup master domain manager workstation name.

Results

Once you have switched the master domain manager to the new backup master, you can make this switch permanent. For details, see Making the switch manager permanent.

For more detailed information about switching the master domain manager, see Short-term switch of a master domain manager