okd/roles/etcd/tasks/add_new_member.yml

---
# Set some facts to reference from hostvars
- import_tasks: set_facts.yml

- name: Add new etcd members to cluster
  command: "{{ etcdctlv2 }} member add {{ etcd_hostname }} {{ etcd_peer_url_scheme }}://{{ etcd_ip }}:{{ etcd_peer_port }}"
  delegate_to: "{{ etcd_ca_host }}"
  failed_when:
  - etcd_add_check.rc == 1
  - ("peerURL exists" not in etcd_add_check.stderr)
  register: etcd_add_check
  retries: 3
  delay: 10
  until: etcd_add_check.rc == 0