kubespray/roles/kubernetes-apps/helm/tasks/gen_helm_tiller_certs.yml

---
- name: "Gen_helm_tiller_certs | Create helm config directory (on {{ groups['kube-master'][0] }})"
  run_once: yes
  delegate_to: "{{ groups['kube-master'][0] }}"
  file:
    path: "{{ helm_config_dir }}"
    state: directory
    owner: kube

- name: "Gen_helm_tiller_certs | Create helm script directory (on {{ groups['kube-master'][0] }})"
  run_once: yes
  delegate_to: "{{ groups['kube-master'][0] }}"
  file:
    path: "{{ helm_script_dir }}"
    state: directory
    owner: kube

- name: Gen_helm_tiller_certs | Copy certs generation script
  run_once: yes
  delegate_to: "{{ groups['kube-master'][0] }}"
  template:
    src: "helm-make-ssl.sh.j2"
    dest: "{{ helm_script_dir }}/helm-make-ssl.sh"
    mode: 0700

- name: "Check_helm_certs | check if helm client certs have already been generated on first master (on {{ groups['kube-master'][0] }})"
  find:
    paths: "{{ helm_home_dir }}"
    patterns: "*.pem"
    get_checksum: true
  delegate_to: "{{ groups['kube-master'][0] }}"
  register: helmcert_master
  run_once: true

- name: Gen_helm_tiller_certs | run cert generation script
  run_once: yes
  delegate_to: "{{ groups['kube-master'][0] }}"
  command: "{{ helm_script_dir }}/helm-make-ssl.sh -e {{ helm_home_dir }} -d {{ helm_tiller_cert_dir }}"

- name: Check_helm_client_certs | Set helm_client_certs
  set_fact:
    helm_client_certs: ['ca.pem', 'cert.pem', 'key.pem']

- name: "Check_helm_client_certs | check if a cert already exists on master node"
  find:
    paths: "{{ helm_home_dir }}"
    patterns: "*.pem"
    get_checksum: true
  register: helmcert_node
  when: inventory_hostname != groups['kube-master'][0]

- name: "Check_helm_client_certs | Set 'sync_helm_certs' to true on masters"
  set_fact:
    sync_helm_certs: (not item in helmcert_node.files | map(attribute='path') | map("basename") | list or helmcert_node.files | selectattr("path", "equalto", "{{ helm_home_dir }}/{{ item }}") | map(attribute="checksum")|first|default('') != helmcert_master.files | selectattr("path", "equalto", "{{ helm_home_dir }}/{{ item }}") | map(attribute="checksum")|first|default(''))
  when:
    - inventory_hostname != groups['kube-master'][0]
  with_items:
    - "{{ helm_client_certs }}"

- name: Gen_helm_tiller_certs | Gather helm client certs
  # noqa 303 - tar is called intentionally here, but maybe this should be done with the slurp module
  shell: "tar cfz - -C {{ helm_home_dir }} -T /dev/stdin <<< {{ helm_client_certs|join(' ') }} | base64 --wrap=0"
  args:
    executable: /bin/bash
  no_log: true
  register: helm_client_cert_data
  check_mode: no
  delegate_to: "{{ groups['kube-master'][0] }}"
  when: sync_helm_certs|default(false) and inventory_hostname != groups['kube-master'][0]

- name: Gen_helm_tiller_certs | Use tempfile for unpacking certs on masters
  tempfile:
    state: file
    path: /tmp
    prefix: helmcertsXXXXX
    suffix: tar.gz
  register: helm_cert_tempfile
  when: sync_helm_certs|default(false) and inventory_hostname != groups['kube-master'][0]

- name: Gen_helm_tiller_certs | Write helm client certs to tempfile
  copy:
    content: "{{ helm_client_cert_data.stdout }}"
    dest: "{{ helm_cert_tempfile.path }}"
    owner: root
    mode: "0600"
  when: sync_helm_certs|default(false) and inventory_hostname != groups['kube-master'][0]

- name: Gen_helm_tiller_certs | Unpack helm certs on masters
  shell: "base64 -d < {{ helm_cert_tempfile.path }} | tar xz -C {{ helm_home_dir }}"
  no_log: true
  changed_when: false
  check_mode: no
  when: sync_helm_certs|default(false) and inventory_hostname != groups['kube-master'][0]

- name: Gen_helm_tiller_certs | Cleanup tempfile on masters
  file:
    path: "{{ helm_cert_tempfile.path }}"
    state: absent
  when: sync_helm_certs|default(false) and inventory_hostname != groups['kube-master'][0]

- name: Gen_certs | check certificate permissions
  file:
    path: "{{ helm_home_dir }}"
    group: "{{ helm_cert_group }}"
    state: directory
    owner: "{{ helm_cert_owner }}"
    mode: "u=rwX,g-rwx,o-rwx"
    recurse: yes