Complete the steps below to make PKI Hub cluster 2 the passive warm standby cluster. 

To install PKI Hub on PKI Hub cluster 2

1. Provision the same number of nodes as in PKI Hub cluster 1.
2. Configure node network settings such as  IP addresses, hostnames, NTP servers, or DNS servers. 

   The nodes may have different hostnames or IP addresses than those on PKI Hub cluster 1.

3. Deploy a multi-node PKI Hub installation as explained in Starting up PKI Hub. 
4. Run the following commands with the same values as in PKI Hub cluster 1.
   • clusterctl volume capacity
   • clusterctl retention config logs
   • clusterctl retention config metrics 
   • clusterctl proxy set
5. If required:
   1. Issue a TLS certificate using the same certificate authority that issued the TLS certificate for the PKI Hub cluster 1
   2. Run the clusterctl certificate command to set this TLS certificate.
6. Install the script described in Installing the stop services script
7. Perform the steps described in Restoring the active cluster configuration on the passive one to restore the PKI Hub cluster 1 configuration on PKI Hub cluster 2. 

   You must repeat this step after any configuration change in the active data center.