kubespray/roles/etcd/tasks/gen_certs_script.yml

---
- name: Gen_certs | create etcd cert dir
  file:
    path: "{{ etcd_cert_dir }}"
    group: "{{ etcd_cert_group }}"
    state: directory
    owner: kube
    mode: "{{ etcd_cert_dir_mode }}"
    recurse: yes

- name: "Gen_certs | create etcd script dir (on {{ groups['etcd'][0] }})"
  file:
    path: "{{ etcd_script_dir }}"
    state: directory
    owner: root
    mode: 0700
  run_once: yes
  when: inventory_hostname == groups['etcd'][0]

- name: Gen_certs | write openssl config
  template:
    src: "openssl.conf.j2"
    dest: "{{ etcd_config_dir }}/openssl.conf"
    mode: 0640
  run_once: yes
  delegate_to: "{{ groups['etcd'][0] }}"
  when:
    - gen_certs|default(false)
    - inventory_hostname == groups['etcd'][0]

- name: Gen_certs | copy certs generation script
  template:
    src: "make-ssl-etcd.sh.j2"
    dest: "{{ etcd_script_dir }}/make-ssl-etcd.sh"
    mode: 0700
  run_once: yes
  when:
    - gen_certs|default(false)
    - inventory_hostname == groups['etcd'][0]

- name: Gen_certs | run cert generation script
  command: "bash -x {{ etcd_script_dir }}/make-ssl-etcd.sh -f {{ etcd_config_dir }}/openssl.conf -d {{ etcd_cert_dir }}"
  environment:
    - MASTERS: "{% for m in groups['etcd'] %}
                  {% if gen_master_certs[m] %}
                    {{ m }}
                  {% endif %}
                {% endfor %}"
    - HOSTS: "{% for h in (groups['k8s_cluster'] + groups['calico_rr']|default([]))|unique %}
                {% if gen_node_certs[h] %}
                    {{ h }}
                {% endif %}
              {% endfor %}"
  run_once: yes
  delegate_to: "{{ groups['etcd'][0] }}"
  when: gen_certs|default(false)
  notify: set etcd_secret_changed

- name: Gen_certs | Gather etcd member and admin certs from first etcd node
  slurp:
    src: "{{ item }}"
  register: etcd_master_certs
  with_items:
    - "{{ etcd_cert_dir }}/ca.pem"
    - "{{ etcd_cert_dir }}/ca-key.pem"
    - "[{% for node in groups['etcd'] %}
        '{{ etcd_cert_dir }}/admin-{{ node }}.pem',
        '{{ etcd_cert_dir }}/admin-{{ node }}-key.pem',
        '{{ etcd_cert_dir }}/member-{{ node }}.pem',
        '{{ etcd_cert_dir }}/member-{{ node }}-key.pem',
        {% endfor %}]"
  delegate_to: "{{ groups['etcd'][0] }}"
  when:
    - inventory_hostname in groups['etcd']
    - sync_certs|default(false)
    - inventory_hostname != groups['etcd'][0]
  notify: set etcd_secret_changed

- name: Gen_certs | Write etcd member and admin certs to other etcd nodes
  copy:
    dest: "{{ item.item }}"
    content: "{{ item.content | b64decode }}"
    group: "{{ etcd_cert_group }}"
    owner: kube
    mode: 0640
  with_items: "{{ etcd_master_certs.results }}"
  when:
    - inventory_hostname in groups['etcd']
    - sync_certs|default(false)
    - inventory_hostname != groups['etcd'][0]
  loop_control:
    label: "{{ item.item }}"

- name: Gen_certs | Gather node certs from first etcd node
  slurp:
    src: "{{ item }}"
  register: etcd_master_node_certs
  with_items:
    - "[{% for node in (groups['k8s_cluster'] + groups['calico_rr']|default([]))|unique %}
        '{{ etcd_cert_dir }}/node-{{ node }}.pem',
        '{{ etcd_cert_dir }}/node-{{ node }}-key.pem',
        {% endfor %}]"
  delegate_to: "{{ groups['etcd'][0] }}"
  when:
    - inventory_hostname in groups['etcd']
    - inventory_hostname != groups['etcd'][0]
  notify: set etcd_secret_changed

- name: Gen_certs | Write node certs to other etcd nodes
  copy:
    dest: "{{ item.item }}"
    content: "{{ item.content | b64decode }}"
    group: "{{ etcd_cert_group }}"
    owner: kube
    mode: 0640
  with_items: "{{ etcd_master_node_certs.results }}"
  when:
    - inventory_hostname in groups['etcd']
    - inventory_hostname != groups['etcd'][0]
  loop_control:
    label: "{{ item.item }}"

- name: Gen_certs | Set cert names per node
  set_fact:
    my_etcd_node_certs: [ 'ca.pem',
                          'node-{{ inventory_hostname }}.pem',
                          'node-{{ inventory_hostname }}-key.pem']
  tags:
    - facts

- name: "Check_certs | Set 'sync_certs' to true on nodes"
  set_fact:
    sync_certs: true
  when: (('calico_rr' in groups and inventory_hostname in groups['calico_rr']) or
        inventory_hostname in groups['k8s_cluster']) and
        inventory_hostname not in groups['etcd']
  with_items:
    - "{{ my_etcd_node_certs }}"

- name: Gen_certs | Gather node certs
  shell: "set -o pipefail && tar cfz - -C {{ etcd_cert_dir }} {{ my_etcd_node_certs|join(' ') }} | base64 --wrap=0"
  args:
    executable: /bin/bash
    warn: false
  no_log: true
  register: etcd_node_certs
  check_mode: no
  delegate_to: "{{ groups['etcd'][0] }}"
  when: (('calico_rr' in groups and inventory_hostname in groups['calico_rr']) or
        inventory_hostname in groups['k8s_cluster']) and
        sync_certs|default(false) and inventory_hostname not in groups['etcd']

- name: Gen_certs | Copy certs on nodes
  shell: "set -o pipefail && base64 -d <<< '{{ etcd_node_certs.stdout|quote }}' | tar xz -C {{ etcd_cert_dir }}"
  args:
    executable: /bin/bash
  no_log: true
  changed_when: false
  when: (('calico_rr' in groups and inventory_hostname in groups['calico_rr']) or
        inventory_hostname in groups['k8s_cluster']) and
        sync_certs|default(false) and inventory_hostname not in groups['etcd']

- name: Gen_certs | check certificate permissions
  file:
    path: "{{ etcd_cert_dir }}"
    group: "{{ etcd_cert_group }}"
    state: directory
    owner: kube
    mode: "{{ etcd_cert_dir_mode }}"
    recurse: yes