okd/roles/openshift_control_plane/tasks/configure_external_etcd.yml

---
- name: Remove etcdConfig section
  yedit:
    src: /etc/origin/master/master-config.yaml
    key: "etcdConfig"
    state: absent
- name: Set etcdClientInfo.ca to master.etcd-ca.crt
  yedit:
    src: /etc/origin/master/master-config.yaml
    key: etcdClientInfo.ca
    value: master.etcd-ca.crt
- name: Set etcdClientInfo.urls to the external etcd
  yedit:
    src: /etc/origin/master/master-config.yaml
    key: etcdClientInfo.urls
    value:
      - "{{ etcd_peer_url_scheme }}://{{ etcd_ip }}:{{ etcd_peer_port }}"