Steps for configuring WLM in PowerHA SystemMirror

Edit online

Follow these basic steps for configuring WLM classes in PowerHA® SystemMirror®.

About this task

These steps include:

Procedure

  1. Configure WLM classes and rules, using the appropriate AIX® SMIT panels, as described here.
  2. If you select a configuration other than the default (PowerHA SystemMirror_WLM_config), specify the WLM configuration to be used in PowerHA SystemMirror, as described here.
  3. Assign the classes for this configuration to a resource group, selecting from a picklist of the classes associated with the default WLM configuration or the configuration you specified in Step 2. For instructions on adding resources to resource groups, see Adding resources and attributes to resource groups using the extended path.
  4. After adding the WLM classes to the resource group - or after all resource group configuration is complete - verify and synchronize the configuration.
    Note: Once WLM is configured in PowerHA SystemMirror, PowerHA SystemMirror starts and stops WLM. If WLM is already running when PowerHA SystemMirror is started, PowerHA SystemMirror restarts it with a new configuration file. Therefore, only the WLM rules associated with classes in a resource group that can be acquired on a given node will be active on that node. Once PowerHA SystemMirror is stopped, WLM will be switched back to the configuration it was using when it was started.