HMC host migration from controller node to compute plane and vice versa

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Starting PowerVC 2.0.3, you can migrate an HMC host from controller node to compute plane and vice versa. If you add an HMC host after adding a compute plane, the HMC host gets registered on the compute plane (the nova-compute service runs on the compute plane). By using the migratehmchost command, you can migrate an HMC host from the compute plane to the controller node and vice versa.

To migrate an HMC host, run the following command.
/opt/ibm/powervc/bin/powervc-manage -o migratehmchost  -hh <hmchostname>
You can use the following optional parameters:
  • -o OPERATION: Specifies an operation to be performed by the command.
  • -hh HMCHOSTNAME: Specifies the HMC hostname. For instance, 828422A_215E31V (HMC Host MTMS Name).

For example, run the following command to migrate a HMC host (nova-compute service) to the controller node if it is running on the compute plane or migrate to the compute plane if the host is running on the controller node.

/opt/ibm/powervc/bin/powervc-manage -o migratehmchost -hh 828422A_215E31V