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

---
- name: Cilium | Check Cilium encryption `cilium_ipsec_key` for ipsec
  assert:
    that:
      - "cilium_ipsec_key is defined"
    msg: "cilium_ipsec_key should be defined to enable encryption using ipsec"
  when:
    - cilium_encryption_enabled
    - cilium_encryption_type == "ipsec"
    - cilium_tunnel_mode in ['vxlan']

# TODO: Clean this task up when we drop backward compatibility support for `cilium_ipsec_enabled`
- name: Stop if `cilium_ipsec_enabled` is defined and `cilium_encryption_type` is not `ipsec`
  assert:
    that: cilium_encryption_type == 'ipsec'
    msg: >
      It is not possible to use `cilium_ipsec_enabled` when `cilium_encryption_type` is set to {{ cilium_encryption_type }}.
  when:
    - cilium_ipsec_enabled is defined
    - cilium_ipsec_enabled
    - kube_network_plugin == 'cilium' or cilium_deploy_additionally | default(false) | bool

- name: Stop if kernel version is too low for Cilium Wireguard encryption
  assert:
    that: ansible_kernel.split('-')[0] is version('5.6.0', '>=')
  when:
    - kube_network_plugin == 'cilium' or cilium_deploy_additionally | default(false) | bool
    - cilium_encryption_enabled
    - cilium_encryption_type == "wireguard"
    - not ignore_assert_errors

- name: Stop if bad Cilium identity allocation mode
  assert:
    that: cilium_identity_allocation_mode in ['crd', 'kvstore']
    msg: "cilium_identity_allocation_mode must be either 'crd' or 'kvstore'"

- name: Stop if bad Cilium Cluster ID
  assert:
    that:
      - cilium_cluster_id <= 255
      - cilium_cluster_id >= 0
    msg: "'cilium_cluster_id' must be between 1 and 255"
  when: cilium_cluster_id is defined

- name: Stop if bad encryption type
  assert:
    that: cilium_encryption_type in ['ipsec', 'wireguard']
    msg: "cilium_encryption_type must be either 'ipsec' or 'wireguard'"
  when: cilium_encryption_enabled

- name: Stop if cilium_version is < v1.10.0
  assert:
    that: cilium_version | regex_replace('v') is version(cilium_min_version_required, '>=')
    msg: "cilium_version is too low. Minimum version {{ cilium_min_version_required }}"

# TODO: Clean this task up when we drop backward compatibility support for `cilium_ipsec_enabled`
- name: Set `cilium_encryption_type` to "ipsec" and  if `cilium_ipsec_enabled` is true
  set_fact:
    cilium_encryption_type: ipsec
    cilium_encryption_enabled: true
  when:
    - cilium_ipsec_enabled is defined
    - cilium_ipsec_enabled

- name: Stop if cilium_hubble_event_buffer_capacity is not a power of 2 minus 1 and is not between 1 and 65535
  assert:
    that: "cilium_hubble_event_buffer_capacity in [1, 3, 7, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535]"
    msg: "Error: cilium_hubble_event_buffer_capacity:{{ cilium_hubble_event_buffer_capacity }} is not a power of 2 minus 1 and it should be between 1 and 65535."
  when: cilium_hubble_event_buffer_capacity is defined