Synchronous DR prerequisites in airgapped bare metal

• Kubernetes Clusters: At least two Kubernetes clusters which are part of the same metropolitan area network with a maximum network latency of 10 ms between them.
• For a new installation, meet the minimum prerequisites.
• Network Connectivity:

  • Kubernetes: All worker nodes are able to reach Kubernetes API endpoints on both Kubernetes clusters, for example, port 6443, 443 and so on.

  • Portworx: Open port in the range of 9001-9020 for Portworx worker nodes to communicate with each other.

    To know more about the specific ports for your environment, see the Network table on the Prerequisites page.

• External KVDB: An external KVDB etcd setup outside the clusters. To know how to setup an external etcd, see Install KVDB.
• License: Portworx Enterprise DR license is available.
• Applications Registration: For certain Kubernetes applications, you should create an ApplicationRegistration CR first to facilitate the successful migration of them. Refer to the ApplicationRegistrations page for more information.