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 | Get the certs from first master
  slurp:
    src: "{{ kube_cert_dir }}/{{ item }}"
  delegate_to: "{{groups['kube-master'][0]}}"
  register: slurp_certs
  with_items: '{{ master_certs + node_certs }}'
  when: sync_certs|default(false)
  run_once: true
  notify: set secret_changed

- name: Gen_certs | Copy certs on masters
  copy:
    content: "{{ item.content|b64decode }}"
    dest: "{{ item.source }}"
  with_items: '{{slurp_certs.results}}'
  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
  copy:
    content: "{{ item.content|b64decode }}"
    dest: "{{ item.source }}"
  with_items: '{{slurp_certs.results}}'
  when: item.item in node_certs and
        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