kubespray/roles/kubernetes/secrets/tasks/gen_certs.yml

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

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

- name: Gen_certs | run cert generation script
  command: "{{ kube_script_dir }}/make-ssl.sh -f {{ kube_config_dir }}/openssl.conf -d {{ kube_cert_dir }}"
  run_once: yes
  delegate_to: "{{groups['kube-master'][0]}}"
  when: gen_certs|default(false)
  notify: set secret_changed

- set_fact:
    master_certs: ['ca-key.pem', 'admin.pem', 'admin-key.pem', 'apiserver-key.pem', 'apiserver.pem']
    node_certs: ['ca.pem', 'node.pem', 'node-key.pem']

- name: Gen_certs | Gather master certs
  shell: "tar cfz - -C {{ kube_cert_dir }} {{ master_certs|join(' ') }} {{ node_certs|join(' ') }} | base64 --wrap=0"
  register: master_cert_data
  delegate_to: "{{groups['kube-master'][0]}}"
  run_once: true
  when: sync_certs|default(false)

- name: Gen_certs | Gather node certs
  shell: "tar cfz - -C {{ kube_cert_dir }} {{ node_certs|join(' ') }} | base64 --wrap=0"
  register: node_cert_data
  delegate_to: "{{groups['kube-master'][0]}}"
  run_once: true
  when: sync_certs|default(false)

- name: Gen_certs | Copy certs on masters
  shell: "echo '{{master_cert_data.stdout|quote}}' | base64 -d | tar xz -C {{ kube_cert_dir }}"
  changed_when: false
  when: inventory_hostname in groups['kube-master'] and sync_certs|default(false) and
        inventory_hostname != groups['kube-master'][0]

- name: Gen_certs | Copy certs on nodes
  shell: "echo '{{node_cert_data.stdout|quote}}' | base64 -d | tar xz -C {{ kube_cert_dir }}"
  changed_when: false
  when: inventory_hostname in groups['kube-node'] and  sync_certs|default(false) and
        inventory_hostname != groups['kube-master'][0]

- name: Gen_certs | check certificate permissions
  file:
    path={{ kube_cert_dir }}
    group={{ kube_cert_group }}
    owner=kube
    recurse=yes

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

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

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

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

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