If your PKI Hub comprises more than one node, you need to join them on a cluster. 

To join PKI Hub nodes

1. In all the nodes:
   1. Make sure the node meets the Requirements. 
   2. If not yet installed, install the PKI Hub image as explained in Installing the PKI Hub image.
2. In one of the nodes:
   1. Install PKI Hub as explained in Installing the cluster.
   2. Run clusterctl node info and copy the node IP address.
   3. Run clusterctl node join-token and copy the node joining token.
3. In the rest of the nodes, perform the following steps sequentially.
   1. Run the clusterctl node add command with the IP address and joining token previously obtained.
   2. Wait for the command to complete before proceeding to join another node.

      Do not perform any operations on the cluster nodes until this operation completes.

4. Redeploy each deployed Entrust solution (if any) using either the clusterctl solution deploy command or the Management Console.