Can one Attach a New Node to the Cluster and Authorize it to be a Master Node Without Deleting and Rebuilding the Existing Cluster

Problem

Is there a way to attach a new node to a cluster and authorize it to be a master node without deleting and rebuilding the existing cluster?

Environment

• Platform9 Managed Kubernetes - All Versions

Answer

• If you want to add new master nodes to the cluster, you can do so by attaching and authorizing them to your cluster via U/I. On the main Infrastructure page, one can Select the Cluster and then select the Scale Master option.

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• Keep in mind, that in a Multi-Master setup, for maintaining cluster health, ensure that you have Master Nodes deployed with odd numbers (e.g. 3,5,7,9, etc.) so quorum (master node majority) can be maintained should one or more masters fail.
• Also, take note that you can not add more master nodes to a cluster that's created with a single master node today. You need to start with a cluster that has at least 2 master nodes before you can add any more master nodes to it.

Additional Information

Attach Node to Cluster

Multimaster Architecture - Platform9 Managed Kubernetes