---
# flannel deployment
- name: Checking if flannel exists
  shell: "ip link | awk '$2 ~ /^(flannel|cni)/ { print $0 }' | wc -l | awk '{ print $1 }'"
  register: cni_deployment
  changed_when: False
  check_mode: False

- block:
    - name: Determine physical interface to use with cni
      shell: "ip route get 169.254.42.42 | head -n1 | sed -E 's/.+ dev ([^ ]+).+/\\1/'"
      register: cni_interface
      changed_when: False
      check_mode: False
      failed_when: "cni_interface.stdout is not match('^[a-z][a-z0-9]+$')"

    - name: Create directories
      file:
        path: "{{ item }}"
        state: directory
        mode: 0755
      with_items:
        - /etc/kube-flannel
        - /etc/cni/net.d
        - /opt/cni/bin

    - template:
        src: kube-flannel.yml.j2
        dest: /tmp/kube-flannel.yml

    - name: Configure cni
      shell: "kubectl apply -f /tmp/kube-flannel.yml"
      register: cni_output
      # flannel has trouble unless we restart the kubelet service
      # we'll flush_handlers later
      notify: restart kubelet

    - debug: var="cni_output"

  when: "cni_deployment.stdout != '2'"