kubespray/roles/network_plugin/calico/tasks/check.yml

---
- name: "Check vars defined correctly"
  assert:
    that:
      - "calico_pool_name is defined"
      - "calico_pool_name is match('^[a-zA-Z0-9-_\\\\.]{2,63}$')"
    msg: "calico_pool_name contains invalid characters"

- name: "Check calico network backend defined correctly"
  assert:
    that:
      - "calico_network_backend in ['bird', 'vxlan', 'none']"
    msg: "calico network backend is not 'bird', 'vxlan' or 'none'"
  when:
    - calico_network_backend is defined

- name: "Check ipip and vxlan mode defined correctly"
  assert:
    that:
      - "calico_ipip_mode in ['Always', 'CrossSubnet', 'Never']"
      - "calico_vxlan_mode in ['Always', 'CrossSubnet', 'Never']"
    msg: "calico inter host encapsulation mode is not 'Always', 'CrossSubnet' or 'Never'"

- name: "Check ipip and vxlan mode if simultaneously enabled"
  assert:
    that:
      - "calico_vxlan_mode in ['Never']"
    msg: "IP in IP and VXLAN mode is mutualy exclusive modes"
  when:
    - "calico_ipip_mode in ['Always', 'CrossSubnet']"

- name: "Check ipip and vxlan mode if simultaneously enabled"
  assert:
    that:
      - "calico_ipip_mode in ['Never']"
    msg: "IP in IP and VXLAN mode is mutualy exclusive modes"
  when:
    - "calico_vxlan_mode in ['Always', 'CrossSubnet']"