Synchronous DR prerequisites for OpenShift vSphere
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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.
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For a new installation, meet the minimum prerequisites.
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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.
- OpenShift4+: Open ports in the range of 17001-17020 must be accessible to reach Portworx API endpoints.
- 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.
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External KVDB: An external KVDB etcd setup outside the clusters. To know how to setup an external etcd, see Install KVDB.
- 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.