- block:
  # NOTE: When create a k8s environment with devstack-plugin-container and
  # deploy a Pod, the following error occurred - `network: failed to set bridge
  # addr: "cni0" already has an IP address different from 10.x.x.x` and
  # the Pod fails to be deployed. As a fix, delete the related interface and
  # restart service.
  - name: k8s interface down
    shell: ip link set cni0 down && ip link set flannel.1 down
    become: yes

  - name: k8s interface delete
    shell: ip link delete cni0 && ip link delete flannel.1
    become: yes

  - name: kubelet service restart
    service:
      name: kubelet
      state: restarted
    become: yes

  - name: Get coredns name
    shell: >
      kubectl get pod -n kube-system --no-headers -o custom-columns=":metadata.name"
      | grep coredns | tr -s '\n' ' '
    register: coredns_name
    become: yes
    become_user: stack

  - name: Restart coredns pod
    shell: >
      kubectl delete pod -n kube-system {{ coredns_name.stdout }}
    become: yes
    become_user: stack

  - name: Delete existing flannel
    shell: >
      kubectl delete -f https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml
    become: yes
    become_user: stack

  - name: Restart flannel
    shell: >
      kubectl apply -f https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml
    become: yes
    become_user: stack

  when:
    - inventory_hostname == 'controller-k8s'
    - k8s_api_url is defined