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You may want to remove master, worker, or etcd nodes from your existing cluster. This can be done by running the remove-node.yml playbook. First, all specified nodes will be drained, then stop some kubernetes services and delete some certificates, and finally execute the kubectl command to delete these nodes. Use Use --extra-vars flag flag to select the node(s) you want to delete
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You may want to add worker, master or etcd nodes to your existing cluster. This can be done by re-running the cluster.yml playbook.