okd/playbooks/common/openshift-etcd/scaleup.yml

---
- name: Gather facts
  hosts: oo_etcd_to_config:oo_new_etcd_to_config
  roles:
  - openshift_etcd_facts
  post_tasks:
  - set_fact:
      etcd_hostname: "{{ etcd_hostname }}"
      etcd_ip: "{{ etcd_ip }}"

- name: Configure etcd
  hosts: oo_new_etcd_to_config
  serial: 1
  any_errors_fatal: true
  vars:
    etcd_ca_host: "{{ groups.oo_etcd_to_config.0 }}"
  pre_tasks:
  - name: Add new etcd members to cluster
    command: >
      /usr/bin/etcdctl --cert-file {{ etcd_peer_cert_file }}
                       --key-file {{ etcd_peer_key_file }}
                       --ca-file {{ etcd_peer_ca_file }}
                       -C {{ etcd_peer_url_scheme }}://{{ hostvars[etcd_ca_host].etcd_hostname }}:{{ etcd_client_port }}
                       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
  roles:
  - role: os_firewall
    when: etcd_add_check.rc == 0
  - role: openshift_etcd
    when: etcd_add_check.rc == 0
    etcd_peers: "{{ groups.oo_etcd_to_config | union(groups.oo_new_etcd_to_config)| default([], true) }}"
    etcd_ca_host: "{{ groups.oo_etcd_to_config.0 }}"
    etcd_certificates_etcd_hosts: "{{ groups.oo_etcd_to_config | default([], true) }}"
    etcd_initial_cluster_state: "existing"
    initial_etcd_cluster: "{{ etcd_add_check.stdout_lines[3] | regex_replace('ETCD_INITIAL_CLUSTER=','') | regex_replace('\"','') }}"
    etcd_ca_setup: False
    r_etcd_common_etcd_runtime: "{{ openshift.common.etcd_runtime }}"
  - role: nickhammond.logrotate
    when: etcd_add_check.rc == 0
  post_tasks:
  - name: Verify cluster is stable
    command: >
      /usr/bin/etcdctl --cert-file {{ etcd_peer_cert_file }}
                       --key-file {{ etcd_peer_key_file }}
                       --ca-file {{ etcd_peer_ca_file }}
                       -C {{ etcd_peer_url_scheme }}://{{ hostvars[etcd_ca_host].etcd_hostname }}:{{ etcd_client_port }}
                       cluster-health
    register: scaleup_health
    retries: 3
    delay: 30
    until: scaleup_health.rc == 0

- name: Update master etcd client urls
  hosts: oo_masters_to_config
  serial: 1
  vars:
    etcd_ca_host: "{{ groups.oo_etcd_to_config.0 }}"
    openshift_ca_host: "{{ groups.oo_first_master.0 }}"
    openshift_master_etcd_hosts: "{{ hostvars
                                     | oo_select_keys(groups['oo_etcd_to_config'] | union(groups['oo_new_etcd_to_config']))
                                     | oo_collect('openshift.common.hostname')
                                     | default(none, true) }}"
    openshift_master_etcd_port: "{{ (etcd_client_port | default('2379')) if (groups.oo_etcd_to_config is defined and groups.oo_etcd_to_config) else none }}"
  roles:
  - role: openshift_master_facts
  post_tasks:
  - include_role:
      name: openshift_master
      tasks_from: update_etcd_client_urls