kubespray/roles/kubernetes/preinstall/tasks/main.yml

---
- include: pre-upgrade.yml
  tags: [upgrade,  bootstrap-os]

- name: Force binaries directory for Container Linux by CoreOS
  set_fact:
    bin_dir: "/opt/bin"
  when: ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
  tags: facts

- name: check bin dir exists
  file:
    path: "{{bin_dir}}"
    state: directory
    owner: root
  become: true
  tags: bootstrap-os

- include: gitinfos.yml
  when: run_gitinfos
  tags: facts

- include: set_facts.yml
  tags: facts

- name: gather os specific variables
  include_vars: "{{ item }}"
  with_first_found:
    - files:
      - "{{ ansible_distribution|lower }}-{{ ansible_distribution_version|lower|replace('/', '_') }}.yml"
      - "{{ ansible_distribution|lower }}-{{ ansible_distribution_release }}.yml"
      - "{{ ansible_distribution|lower }}-{{ ansible_distribution_major_version|lower|replace('/', '_') }}.yml"
      - "{{ ansible_distribution|lower }}.yml"
      - "{{ ansible_os_family|lower }}.yml"
      - defaults.yml
      paths:
      - ../vars
      skip: true
  tags: facts

- name: Create kubernetes config directory
  file:
    path: "{{ kube_config_dir }}"
    state: directory
    owner: kube
  when: "{{ inventory_hostname in groups['k8s-cluster'] }}"
  tags: [kubelet, k8s-secrets, kube-controller-manager, kube-apiserver, bootstrap-os, apps, network, master, node]

- name: Create kubernetes script directory
  file:
    path: "{{ kube_script_dir }}"
    state: directory
    owner: kube
  when: "{{ inventory_hostname in groups['k8s-cluster'] }}"
  tags: [k8s-secrets, bootstrap-os]

- name: Create kubernetes manifests directory
  file:
    path: "{{ kube_manifest_dir }}"
    state: directory
    owner: kube
  when: "{{ inventory_hostname in groups['k8s-cluster'] }}"
  tags: [kubelet, bootstrap-os, master, node]

- name: check cloud_provider value
  fail:
    msg: "If set the 'cloud_provider' var must be set either to 'generic', 'gce', 'aws', 'azure' or 'openstack'"
  when: cloud_provider is defined and cloud_provider not in ['generic', 'gce', 'aws', 'openstack', 'azure']
  tags: [cloud-provider, facts]

- include: openstack-credential-check.yml
  when: cloud_provider is defined and cloud_provider == 'openstack'
  tags: [cloud-provider, openstack, facts]

- include: azure-credential-check.yml
  when: cloud_provider is defined and cloud_provider == 'azure'
  tags: [cloud-provider, azure, facts]

- name: Create cni directories
  file:
    path: "{{ item }}"
    state: directory
    owner: kube
  with_items:
    - "/etc/cni/net.d"
    - "/opt/cni/bin"
  when: kube_network_plugin in ["calico", "weave", "canal"] and "{{ inventory_hostname in groups['k8s-cluster'] }}"
  tags: [network, calico, weave, canal, bootstrap-os]

- name: Update package management cache (YUM)
  yum: update_cache=yes name='*'
  when: ansible_pkg_mgr == 'yum'
  tags: bootstrap-os

- name: Install latest version of python-apt for Debian distribs
  apt: name=python-apt state=latest update_cache=yes cache_valid_time=3600
  when: ansible_os_family == "Debian"
  tags: bootstrap-os

- name: Install python-dnf for latest RedHat versions
  command: dnf install -y python-dnf yum
  when: ansible_distribution == "Fedora" and
        ansible_distribution_major_version > 21
  changed_when: False
  tags: bootstrap-os

- name: Install epel-release on RedHat/CentOS
  shell: rpm -qa | grep epel-release || rpm -ivh {{ epel_rpm_download_url }}
  when: ansible_distribution in ["CentOS","RedHat"]
  changed_when: False
  check_mode: no
  tags: bootstrap-os

- name: Install packages requirements
  action:
    module: "{{ ansible_pkg_mgr }}"
    name: "{{ item }}"
    state: latest
  register: pkgs_task_result
  until: pkgs_task_result|success
  retries: 4
  delay: "{{ retry_stagger | random + 3 }}"
  with_items: "{{required_pkgs | default([]) | union(common_required_pkgs|default([]))}}"
  when: not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
  tags: bootstrap-os

# Todo : selinux configuration
- name: Confirm selinux deployed
  stat:
    path: /etc/selinux/config
  when: ansible_os_family == "RedHat"
  register: slc

- name: Set selinux policy to permissive
  selinux: policy=targeted state=permissive
  when: ansible_os_family == "RedHat" and slc.stat.exists == True
  changed_when: False
  tags: bootstrap-os

- name: Disable IPv6 DNS lookup
  lineinfile:
    dest: /etc/gai.conf
    line: "precedence ::ffff:0:0/96  100"
    state: present
    backup: yes
  when: disable_ipv6_dns and not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
  tags: bootstrap-os

- name: set default sysctl file path
  set_fact:
    sysctl_file_path: "/etc/sysctl.d/99-sysctl.conf"
  tags: bootstrap-os

- name: Stat sysctl file configuration
  stat: path={{sysctl_file_path}}
  register: sysctl_file_stat
  tags: bootstrap-os

- name: Change sysctl file path to link source if linked
  set_fact:
    sysctl_file_path: "{{sysctl_file_stat.stat.lnk_source}}"
  when: sysctl_file_stat.stat.islnk is defined and sysctl_file_stat.stat.islnk
  tags: bootstrap-os

- name: Enable ip forwarding
  sysctl:
    sysctl_file: "{{sysctl_file_path}}"
    name: net.ipv4.ip_forward
    value: 1
    state: present
  tags: bootstrap-os

- name: Write openstack cloud-config
  template:
    src: openstack-cloud-config.j2
    dest: "{{ kube_config_dir }}/cloud_config"
    group: "{{ kube_cert_group }}"
    mode: 0640
  when: inventory_hostname in groups['k8s-cluster'] and cloud_provider is defined and cloud_provider == "openstack"
  tags: [cloud-provider, openstack]

- name: Write azure cloud-config
  template:
    src: azure-cloud-config.j2
    dest: "{{ kube_config_dir }}/cloud_config"
    group: "{{ kube_cert_group }}"
    mode: 0640
  when: inventory_hostname in groups['k8s-cluster'] and cloud_provider is defined and cloud_provider == "azure"
  tags: [cloud-provider, azure]

- include: etchosts.yml
  tags: [bootstrap-os, etchosts]

- include: resolvconf.yml
  when: dns_mode != 'none' and resolvconf_mode == 'host_resolvconf'
  tags: [bootstrap-os, resolvconf]

- include: dhclient-hooks.yml
  when: dns_mode != 'none' and resolvconf_mode == 'host_resolvconf' and not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
  tags: [bootstrap-os, resolvconf]

- include: dhclient-hooks-undo.yml
  when: dns_mode != 'none' and resolvconf_mode != 'host_resolvconf' and not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
  tags: [bootstrap-os, resolvconf]

- name: Check if we are running inside a Azure VM
  stat: path=/var/lib/waagent/
  register: azure_check
  tags: bootstrap-os

- include: growpart-azure-centos-7.yml
  when: azure_check.stat.exists and
        ansible_distribution in ["CentOS","RedHat"]
  tags: bootstrap-os