2.5. Configuring Memory Slots Reserved for the Self-Hosted Engine on Additional Hosts

If the Manager virtual machine shuts down or needs to be migrated, there must be enough memory on a self-hosted engine node for the Manager virtual machine to restart on or migrate to it. This memory can be reserved on multiple self-hosted engine nodes by using a scheduling policy. The scheduling policy checks if enough memory to start the Manager virtual machine will remain on the specified number of additional self-hosted engine nodes before starting or migrating any virtual machines. See Creating a Scheduling Policy in the Administration Guide for more information about scheduling policies.
Additional self-hosted engine nodes need to be added to the Red Hat Virtualization Manager so that enough memory can be reserved on them for the Manager virtual machine to restart on or migrate to it. See Chapter 7, Installing Additional Hosts to a Self-Hosted Environment.

Procedure 2.6. Configuring Memory Slots Reserved for the Self-Hosted Engine on Additional Hosts

  1. Click the Cluster tab and select the cluster containing the self-hosted engine nodes.
  2. Click Edit.
  3. Click the Scheduling Policy tab.
  4. Click + and select HeSparesCount.
  5. Enter the number of additional self-hosted engine nodes that will reserve enough free memory to start the Manager virtual machine.
  6. Click OK.