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

---
- name: Calico | Configure peering with router(s) at global scope
  command:
    cmd: "{{ bin_dir }}/calicoctl.sh apply -f -"
    stdin: "{{ stdin is string | ternary(stdin, stdin | to_json) }}"
  vars:
    stdin: >
      {"apiVersion": "projectcalico.org/v3",
      "kind": "BGPPeer",
      "metadata": {
        "name": "global-{{ item.name | default(item.router_id | replace(':', '-')) }}"
      },
      "spec": {
        "asNumber": "{{ item.as }}",
        "peerIP": "{{ item.router_id }}"
      }}
  register: output
  retries: 4
  until: output.rc == 0
  delay: "{{ retry_stagger | random + 3 }}"
  with_items:
    - "{{ peers | selectattr('scope', 'defined') | selectattr('scope', 'equalto', 'global') | list | default([]) }}"
  when:
    - inventory_hostname == groups['kube_control_plane'][0]

- name: Calico | Configure node asNumber for per node peering
  command:
    cmd: "{{ bin_dir }}/calicoctl.sh apply -f -"
    stdin: "{{ stdin is string | ternary(stdin, stdin | to_json) }}"
  vars:
    stdin: >
      {"apiVersion": "projectcalico.org/v3",
      "kind": "Node",
      "metadata": {
        "name": "{{ inventory_hostname }}"
      },
      "spec": {
        "bgp": {
          "asNumber": "{{ local_as }}"
        },
        "orchRefs":[{"nodeName":"{{ inventory_hostname }}","orchestrator":"k8s"}]
      }}
  register: output
  retries: 4
  until: output.rc == 0
  delay: "{{ retry_stagger | random + 3 }}"
  when:
    - inventory_hostname in groups['k8s_cluster']
    - local_as is defined
    - groups['calico_rr'] | default([]) | length == 0

- name: Calico | Configure peering with router(s) at node scope
  command:
    cmd: "{{ bin_dir }}/calicoctl.sh apply -f -"
    stdin: "{{ stdin is string | ternary(stdin, stdin | to_json) }}"
  vars:
    stdin: >
      {"apiVersion": "projectcalico.org/v3",
      "kind": "BGPPeer",
      "metadata": {
        "name": "{{ inventory_hostname }}-{{ item.name | default(item.router_id | replace(':', '-')) }}"
      },
      "spec": {
        "asNumber": "{{ item.as }}",
        "node": "{{ inventory_hostname }}",
        "peerIP": "{{ item.router_id }}",
        "sourceAddress": "{{ item.sourceaddress | default('UseNodeIP') }}"
      }}
  register: output
  retries: 4
  until: output.rc == 0
  delay: "{{ retry_stagger | random + 3 }}"
  with_items:
    - "{{ peers | selectattr('scope', 'undefined') | list | default([]) | union(peers | selectattr('scope', 'defined') | selectattr('scope', 'equalto', 'node') | list | default([])) }}"
  delegate_to: "{{ groups['kube_control_plane'][0] }}"
  when:
    - inventory_hostname in groups['k8s_cluster']