inventory.yaml

---
all:
  hosts:
    # Use only IP addresses here!
    node-1:
      ansible_host: 192.168.7.101
    node-2:
      ansible_host: 192.168.7.102
    node-3:
      ansible_host: 192.168.7.103
  children:
    k8s_controlplane:
      hosts:
      # At most one controlplane:
        node-1: {}
    k8s_worker:
      hosts:
        node-2: {}
        node-3: {}

  vars:
    ansible_user: jangel
    ansible_python_interpreter: /usr/bin/python3
    ansible_connection: ssh

    # https://kubernetes.io/releases/ or `apt-cache madison kubeadm | grep 1.20`
    kubernetes_version: "1.20.7-00"

    # 192.168.0.0/16, the default, is already currently in use on my network; so I'll switch to using 172.16.0.0/12. Feel free to change...
    # The forward slash needs to be escaped with a backslash to work 
    pod_network_cidr: "172.16.0.0\/12"

    # kubeadm config setup
    cluster_name: "auto-ops"