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: Lookup etcd member id
  shell: "{{ bin_dir }}/etcdctl --no-sync 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: 2
    ETCDCTL_ENDPOINTS: "{{ etcd_access_addresses }}"
    ETCDCTL_CERT_FILE: "{{ etcd_cert_dir }}/admin-{{ groups['etcd']|first }}.pem"
    ETCDCTL_KEY_FILE: "{{ etcd_cert_dir }}/admin-{{ groups['etcd']|first }}-key.pem"
    ETCDCTL_CA_FILE: "{{ etcd_cert_dir }}/ca.pem"
  delegate_to: "{{ groups['etcd']|first }}"
  when:
    - inventory_hostname in groups['etcd']

- name: Remove etcd member from cluster
  shell: "{{ bin_dir }}/etcdctl --no-sync member remove {{ etcd_member_id.stdout }}"
  register: etcd_member_in_cluster
  ignore_errors: false
  retries: 6
  delay: 5
  until: etcd_member_in_cluster.rc == 0
  changed_when: false
  check_mode: no
  tags:
    - facts
  environment:
    ETCDCTL_API: 2
    ETCDCTL_ENDPOINTS: "{{ etcd_access_addresses }}"
    ETCDCTL_CERT_FILE: "{{ etcd_cert_dir }}/admin-{{ groups['etcd']|first }}.pem"
    ETCDCTL_KEY_FILE: "{{ etcd_cert_dir }}/admin-{{ groups['etcd']|first }}-key.pem"
    ETCDCTL_CA_FILE: "{{ etcd_cert_dir }}/ca.pem"
  delegate_to: "{{ groups['etcd']|first }}"
  when:
    - inventory_hostname in groups['etcd']
    - etcd_member_id.stdout | length > 0