kubespray/roles/etcd/tasks/gen_certs.yml

---

- name: Gen_certs | create etcd script dir
  file:
    path: "{{ etcd_script_dir }}"
    state: directory
    owner: root
  when: inventory_hostname == groups['etcd'][0]

- name: Gen_certs | create etcd cert dir
  file:
    path={{ etcd_cert_dir }}
    group={{ etcd_cert_group }}
    state=directory
    owner=root
    recurse=yes

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

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

- name: Gen_certs | run cert generation script
  command: "{{ 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 hostvars[m].sync_certs|default(false) %}
                    {{ m }}
                  {% endif %}
                {% endfor %}"
    - HOSTS: "{% for h in groups['k8s-cluster'] %}
                {% if hostvars[h].sync_certs|default(false) %}
                    {{ h }}
                {% endif %}
              {% endfor %}"
  run_once: yes
  delegate_to: "{{groups['etcd'][0]}}"
  when: gen_certs|default(false)
  notify: set etcd_secret_changed

- set_fact:
    all_master_certs: "['ca-key.pem',
                      {% for node in groups['etcd'] %}
                      'admin-{{ node }}.pem',
                      'admin-{{ node }}-key.pem',
                      'member-{{ node }}.pem',
                      'member-{{ node }}-key.pem',
                      {% endfor %}]"
    my_master_certs: ['ca-key.pem',
                     'admin-{{ inventory_hostname }}.pem',
                     'admin-{{ inventory_hostname }}-key.pem',
                     'member-{{ inventory_hostname }}.pem',
                     'member-{{ inventory_hostname }}-key.pem'
                     ]
    all_node_certs: "['ca.pem',
                    {% for node in groups['k8s-cluster'] %}
                    'node-{{ node }}.pem',
                    'node-{{ node }}-key.pem',
                    {% endfor %}]"
    my_node_certs: ['ca.pem', 'node-{{ inventory_hostname }}.pem', 'node-{{ inventory_hostname }}-key.pem']
  tags: facts

- name: Gen_certs | Gather etcd master certs
  shell: "tar cfz - -C {{ etcd_cert_dir }} -T /dev/stdin <<< {{ my_master_certs|join(' ') }} {{ all_node_certs|join(' ') }} | base64 --wrap=0"
  args:
    executable: /bin/bash
  register: etcd_master_cert_data
  delegate_to: "{{groups['etcd'][0]}}"
  when: inventory_hostname in groups['etcd'] and sync_certs|default(false) and
        inventory_hostname != groups['etcd'][0]
  notify: set etcd_secret_changed

- name: Gen_certs | Gather etcd node certs
  shell: "tar cfz - -C {{ etcd_cert_dir }} -T /dev/stdin <<< {{ my_node_certs|join(' ') }} | base64 --wrap=0"
  args:
    executable: /bin/bash
  register: etcd_node_cert_data
  delegate_to: "{{groups['etcd'][0]}}"
  when: inventory_hostname in groups['k8s-cluster'] and sync_certs|default(false) and
        inventory_hostname not in groups['etcd']
  notify: set etcd_secret_changed

- name: Gen_certs | Copy certs on masters
  shell: "base64 -d <<< '{{etcd_master_cert_data.stdout|quote}}' | tar xz -C {{ etcd_cert_dir }}"
  args:
    executable: /bin/bash
  changed_when: false
  when: inventory_hostname in groups['etcd'] and sync_certs|default(false) and
        inventory_hostname != groups['etcd'][0]

- name: Gen_certs | Copy certs on nodes
  shell: "base64 -d <<< '{{etcd_node_cert_data.stdout|quote}}' | tar xz -C {{ etcd_cert_dir }}"
  args:
    executable: /bin/bash
  changed_when: false
  when: 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
    recurse=yes
  tags: facts

- name: Gen_certs | set permissions on keys
  shell: chmod 0600 {{ etcd_cert_dir}}/*key.pem
  when: inventory_hostname in groups['etcd']
  changed_when: false

- name: Gen_certs | target ca-certificate store file
  set_fact:
    ca_cert_path: |-
      {% if ansible_os_family == "Debian" -%}
      /usr/local/share/ca-certificates/etcd-ca.crt
      {%- elif ansible_os_family == "RedHat" -%}
      /etc/pki/ca-trust/source/anchors/etcd-ca.crt
      {%- elif ansible_os_family == "CoreOS" -%}
      /etc/ssl/certs/etcd-ca.pem
      {%- endif %}      
  tags: facts

- name: Gen_certs | add CA to trusted CA dir
  copy:
    src: "{{ etcd_cert_dir }}/ca.pem"
    dest: "{{ ca_cert_path }}"
    remote_src: true
  register: etcd_ca_cert

- name: Gen_certs | update ca-certificates (Debian/Ubuntu/CoreOS)
  command: update-ca-certificates
  when: etcd_ca_cert.changed and ansible_os_family in ["Debian", "CoreOS"]

- name: Gen_certs | update ca-certificates (RedHat)
  command: update-ca-trust extract
  when: etcd_ca_cert.changed and ansible_os_family == "RedHat"