Changing the cluster configuration and cluster behavior
Changing the cluster configuration can have cascading effects on cluster behavior. This topic contains warnings about actions that endanger the proper behavior of a PowerHA® SystemMirror® cluster. It also includes some reminders about proper maintenance procedures.
Installing PowerHA SystemMirror makes changes to several AIX® files. All the components of the cluster are under PowerHA SystemMirror control once you configure, synchronize, and run the cluster software. Using AIX to change any cluster component, instead of using the PowerHA SystemMirror menus and synchronizing the topology and/or the cluster resources, interferes with the proper behavior of the PowerHA SystemMirror cluster software and thus affect critical cluster services.