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Adding more worker nodes

In a production cluster you will have 3 controller nodes but you can have many worker nodes. To add one or more worker nodes after the initial setup, you can simply

  • on node c1 where ansible files are, add one or more nodes to the Inventory file
  • review 200* files, usually you will need to run some of them (etc-hosts? firewall?)
  • run ansible-playbook 340-workers.yaml. If you wish to speed this up you can even use --limit new-worker-name to run it only on the newly added node.
  • in the end verify with kubectl get nodes