Adding a node to a cluster

Last Updated : Jul 18, 2022 |

About this task

Use this procedure to add a worker node to a cluster.

Procedure

  1. Edit the solution spreadsheet.

    Under the cluster_config tab modify the number of worker nodes (worker_count).

    Only worker nodes can be added to the cluster, unless you are migrating from a non-HA cluster to an HA cluster. The master_count must be 1 for a non-HA cluster and 3 for an HA cluster.

    Update the deployment spreadsheet to add one or more additional cluster node FQDNs.

  2. Deploy the additional cluster nodes in vCenter.

    For worker nodes, do not associate a disk (SDS=0).

    Use the same cluster node version for the new nodes, unless you are adding the nodes as part of a software upgrade.

  3. Power on the additional cluster nodes.

    Wait approximately 6 minutes for the first-boot script to execute on the new nodes.

  4. Log in to Cluster Control Manager using your customer account.
  5. Create a directory called artifacts using the following command:
    mkdir -p ~/artifacts
  6. Use a utility, such as WinSCP, to transfer the solution configuration spreadsheet to the ~/artifacts directory.
  7. Run the ccm upgrade spec <solution spreadsheet name>.xlsx --infra --force command.
  8. Wait approximately 30 minutes, then run ccm smoke-test on Cluster Control Manager and confirm that all tests pass. If ccm smoke-test fails, run it again in 10 minutes. If the test continuously fails for over an hour, contact your technical support representative.

Result

The additional worker nodes are part of the cluster.