In a dual-control node configuration, there are operations procedures (for example, backup and restore) where you need to know which node is the active and which is the standby control node. The instructions to do that are described in the relevant documentation, but I thought it might be good to capture it in this forum as a general reminder. The basic step is to log in to a control node as the root user and use the cccoreservice command with the status option:
/opt/cassatt/bin/cccoreservice status
The output will look something like this:

As you can see from the annotation in the sample output, the key is to find which node (identified by its IP address) has the collage-core service started. That's the one currently providing Collage services, making it the active control node.

Labels: collage "control nodes"