I have two Private cloud in different regions and I have setup hashicorp vault on both of them with consul as storage. On each DC, I have two vault servers (one active, one standby) and 3 consul servers for data. Now, how should I JOIN both of them via WAN Federation to achieve failover during a disaster ? Also, let me know how to UNJOIN them as well. Kindly guide.
-I am using community edition
-I am not using K8s or docker for deployment.