Upgrading the Fabric Services System cluster

After you complete the procedure Performing a software upgrade, the Fabric Services System software is upgraded to the new release.
Note: Release 23.4.1 also supports new versions of the compute VM OS and Kubernetes, so you need to migrate data in the cluster to the new schema, as described in this procedure.
  1. Back up the Fabric Services System.

    For instructions, see Backup and restore in the Fabric Services System User Guide.

  2. Make a copy of the customer-input.json file, certificates, SR Linux images and other user-created files from the old deployer VM to a safe location.
  3. Delete all the compute VMs.
  4. Recreate the compute VM with the Release 23.4.1 base image.

    The number of compute VMs, hostname and IP address details should be same as the previous FSS cluster.

  5. Copy the customer-input.json file, certificates, SR Linux images and other user-created files to the new deployer VM.
  6. Reset the old cluster configurations.
    Log in to the deployer VM running the new release and execute the /root/bin/fss-install.sh reset command.
  7. Set up key-based authentication from the deployer VM to all the compute VMs.
    If password authentication is enabled on the node for SSH, enter the following command from the deployer VM:
    # ssh-copy-id root@<node IP/FQDN>
  8. Restore the backup that you created in Step 1.
    For instructions, see Backup and restore in the Fabric Services System User Guide.
If you want to configure the LDAP settings or remote syslog capabilities, complete the following procedures in the Fabric Services System User Guide:
  • Configuring LDAP after software upgrade
  • Configuring a remote syslog server for user audit logs