- name: Set up master node
  hosts: masters
  become: true
  tasks:
  - name: Check for admin.conf from kubeadm
    stat: path=/etc/kubernetes/admin.conf
    register: admin_conf

  - set_fact:
      running: admin_conf.stat.exists

  - name: Run kubeadm if admin.conf doesn't exist
    command: kubeadm init 
    when: admin_conf.stat.exists == false

  - name: Create kubeadm join command
    shell: kubeadm token create --print-join-command
    register: results
    when: admin_conf.stat.exists == false
  - debug:
      var: results.stdout
    when: admin_conf.stat.exists == false
  - set_fact:
      token: "{{ results.stdout | regex_search(regexp, '\\2') | first }}"
    vars:
      regexp: '([^\s]+\s){4}([^\s]+)'
    when: admin_conf.stat.exists == false
  - debug:
      var: token
    when: admin_conf.stat.exists == false
  - set_fact:
      hash: "{{ results.stdout | regex_search(regexp, '\\2') | first }}"
    vars:
      regexp: '([^\s]+\s){6}([^\s]+)'
    when: admin_conf.stat.exists == false
  - debug:
      var: hash
    when: admin_conf.stat.exists == false

  - name: Install flannel networking for RPi
    shell: curl -sSL https://rawgit.com/coreos/flannel/v0.10.0/Documentation/kube-flannel.yml | sed "s/amd64/arm/g" | kubectl --kubeconfig=/etc/kubernetes/admin.conf create -f -
    when: 
      - ansible_lsb.id == "Raspbian"
      - admin_conf.stat.exists == false

  - name: Install flannel networking for x86_64
    shell: curl -sSL https://rawgit.com/coreos/flannel/v0.10.0/Documentation/kube-flannel.yml | kubectl --kubeconfig=/etc/kubernetes/admin.conf create -f -
    when: 
      - ansible_distribution == "Debian"
      - ansible_architecture == "x86_64"
      - admin_conf.stat.exists == false
  
  - debug: 
      msg: "kubeadm has probably already been run."
    when: admin_conf.stat.exists == true