Compute node (HCI) removal Guide

Remove Compute node from cluster

Stop the compute host

Goto Admin > Compute > All Hypervisors and click Compute host tab. Look for the hostname you wish to remove and click on button DISABLE SERVICE

Disable service

Leave a reason and click DISABLE SERVICE

Service Disabled

Make sure the service is disabled

Migrate Instances from disabled host

Goto Admin > Compute > Instances, look for the instances which is hosted on DISABLED Host and start the LIVE MIGRATE INSTANCE from the action menu

Allocate the instance to new host

You can choose a preferred host to migrate or Automatically and SUBMIT

All instances has been migrated

Repeat the steps and migrate the rest of the Instances

Connect to control node

    $ ssh [email protected]
    Warning: Permanently added '192.168.1.x' (ECDSA) to the list of known hosts.
    Password:

Remove the compute node

    cc1> cluster
    cc1:cluster> remove_node
    1: compute01
    2: compute02
    3: compute03
    Enter index: 3
    this command is only applicable for compute or storage nodes
    make sure its running instances have been properly terminated or migrated
    shutdown the target host before proceeding
    Enter 'YES' to confirm: YES

Results

Goto Admin > Compute > All Hypervisors and click Compute host tab. Host compute03 has been removed from the Cluster