kubespray/roles/remove-node/remove-etcd-node/tasks/main.yml

---
- name: Lookup node IP in kubernetes
  shell: >-
    {{ bin_dir }}/kubectl get nodes {{ node }}
    -o jsonpath='{range.status.addresses[?(@.type=="InternalIP")]}{.address}{"\n"}{end}'
  register: remove_node_ip
  when:
    - inventory_hostname in groups['etcd']
    - ip is not defined
    - access_ip is not defined
  delegate_to: "{{ groups['etcd']|first }}"
  failed_when: false

- name: Set node IP
  set_fact:
    node_ip: "{{ ip | default(access_ip | default(remove_node_ip.stdout)) | trim }}"
  when:
    - inventory_hostname in groups['etcd']

- name: Make sure node_ip is set
  assert:
    that: node_ip is defined and node_ip | length > 0
    msg: "Etcd node ip is not set !"
  when:
    - inventory_hostname in groups['etcd']

- name: Lookup etcd member id
  shell: "{{ bin_dir }}/etcdctl member list | grep {{ node_ip }} | cut -d, -f1"
  register: etcd_member_id
  ignore_errors: true
  changed_when: false
  check_mode: no
  tags:
    - facts
  environment:
    ETCDCTL_API: 3
    ETCDCTL_CERT: "{{ etcd_cert_dir }}/admin-{{ groups['etcd']|first }}.pem"
    ETCDCTL_KEY: "{{ etcd_cert_dir }}/admin-{{ groups['etcd']|first }}-key.pem"
    ETCDCTL_CACERT: "{{ etcd_cert_dir }}/ca.pem"
    ETCDCTL_ENDPOINTS: "https://{{ hostvars[groups['etcd']|first]['etcd_access_address'] |
                                   default(hostvars[groups['etcd']|first]['ip']) |
                                   default(hostvars[groups['etcd']|first]['fallback_ips'][groups['etcd']|first]) }}:2379"
  delegate_to: "{{ groups['etcd']|first }}"
  when: inventory_hostname in groups['etcd']

- name: Remove etcd member from cluster
  command: "{{ bin_dir }}/etcdctl member remove {{ etcd_member_id.stdout }}"
  register: etcd_member_in_cluster
  changed_when: false
  check_mode: no
  tags:
    - facts
  environment:
    ETCDCTL_API: 3
    ETCDCTL_CERT: "{{ etcd_cert_dir }}/admin-{{ groups['etcd']|first }}.pem"
    ETCDCTL_KEY: "{{ etcd_cert_dir }}/admin-{{ groups['etcd']|first }}-key.pem"
    ETCDCTL_CACERT: "{{ etcd_cert_dir }}/ca.pem"
    ETCDCTL_ENDPOINTS: "https://{{ hostvars[groups['etcd']|first]['etcd_access_address'] |
                                   default(hostvars[groups['etcd']|first]['ip']) |
                                   default(hostvars[groups['etcd']|first]['fallback_ips'][groups['etcd']|first]) }}:2379"
  delegate_to: "{{ groups['etcd']|first }}"
  when:
    - inventory_hostname in groups['etcd']
    - etcd_member_id.stdout | length > 0