vRealize Automation 7.5 migration fails intermittently during rejoin/reconfigure cluster node of replica node

Products

• VMware Aria Suite

Issue/Introduction

Symptoms:

• In the /var/log/vcac/migrate.log you see error similar to:

Command execution failed with unexpected error: java.lang.RuntimeException: Leading cluster node health check failed.

Environment

VMware vRealize Automation 7.5.x

Resolution

1. Rollback the environment to the pre-migration backup state.
2. Apply the provided workaround.
3. Retry the migration.

Workaround:

1. SSH login to the vRealize Automation 7.5 master node.
2. Navigate to /usr/lib/vcac/tools/migration/sequence/migration/scripts/ directory.
3. Open M80-reconfigure-node file for editing and append the lines below before the Re-join node to cluster command:

# Wait for successful master node health check
mutils.print_message('+ [{}] Waiting for successful master node health check'.format(node_hostname))
mutils.wait_for_vra_services(this_hostname)

# Re-join node to the cluster. This will stop all services, update node's claster configuration from the database,
# enable RabbitMQ clustering on the node and start only services configured to run. It may run for a while.

4. Retry the migration.