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  • CentOS 7 (minimum supported version);
  • at least 2 GB of RAM and 2 CPUs per machine;
  • opening doors on the control plane (6443, 2379-2380, 10250-10252) and on the worker (10250, 30000-32767);
  •  uniqueness uniqueness of MAC address and product_uuid for each node;
  • complete connectivity between the cluster nodes;
  • swap disabled on nodes.

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