kubespray/roles/docker/tasks/main.yml

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---
- 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
# https://yum.dockerproject.org/repo/main/opensuse/ contains packages for an EOL
# openSUSE version so we can't use it. The only alternative is to use the docker
# packages from the distribution repositories.
- name: Warn about Docker version on SUSE
debug:
msg: "SUSE distributions always install Docker from the distro repos"
when: ansible_pkg_mgr == 'zypper'
- include_tasks: set_facts_dns.yml
when: dns_mode != 'none' and resolvconf_mode == 'docker_dns'
tags:
- facts
- name: check for minimum kernel version
fail:
msg: >
docker requires a minimum kernel version of
{{ docker_kernel_min_version }} on
{{ ansible_distribution }}-{{ ansible_distribution_version }}
when: (not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]) and (ansible_kernel|version_compare(docker_kernel_min_version, "<"))
tags:
- facts
- import_tasks: pre-upgrade.yml
- name: ensure docker-ce repository public key is installed
action: "{{ docker_repo_key_info.pkg_key }}"
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args:
id: "{{item}}"
url: "{{docker_repo_key_info.url}}"
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state: present
register: keyserver_task_result
until: keyserver_task_result|succeeded
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
with_items: "{{ docker_repo_key_info.repo_keys }}"
when: not (ansible_os_family in ["CoreOS", "Container Linux by CoreOS", "RedHat", "Suse"] or is_atomic)
- name: ensure docker-ce repository is enabled
action: "{{ docker_repo_info.pkg_repo }}"
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args:
repo: "{{item}}"
state: present
with_items: "{{ docker_repo_info.repos }}"
when: not (ansible_os_family in ["CoreOS", "Container Linux by CoreOS", "RedHat", "Suse"] or is_atomic) and (docker_repo_info.repos|length > 0)
- name: ensure docker-engine repository public key is installed
action: "{{ dockerproject_repo_key_info.pkg_key }}"
args:
id: "{{item}}"
url: "{{dockerproject_repo_key_info.url}}"
state: present
register: keyserver_task_result
until: keyserver_task_result|succeeded
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
with_items: "{{ dockerproject_repo_key_info.repo_keys }}"
when: not (ansible_os_family in ["CoreOS", "Container Linux by CoreOS", "RedHat", "Suse"] or is_atomic)
- name: ensure docker-engine repository is enabled
action: "{{ dockerproject_repo_info.pkg_repo }}"
args:
repo: "{{item}}"
state: present
with_items: "{{ dockerproject_repo_info.repos }}"
when: not (ansible_os_family in ["CoreOS", "Container Linux by CoreOS", "RedHat", "Suse"] or is_atomic) and (dockerproject_repo_info.repos|length > 0)
- name: Configure docker repository on RedHat/CentOS
template:
src: "rh_docker.repo.j2"
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dest: "/etc/yum.repos.d/docker.repo"
when: ansible_distribution in ["CentOS","RedHat"] and not is_atomic
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- name: Copy yum.conf for editing
copy:
src: "{{ yum_conf }}"
dest: "{{ docker_yum_conf }}"
remote_src: yes
when: ansible_distribution in ["CentOS","RedHat"] and not is_atomic
- name: Edit copy of yum.conf to set obsoletes=0
lineinfile:
path: "{{ docker_yum_conf }}"
state: present
regexp: '^obsoletes='
line: 'obsoletes=0'
when: ansible_distribution in ["CentOS","RedHat"] and not is_atomic
- name: ensure docker packages are installed
action: "{{ docker_package_info.pkg_mgr }}"
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args:
pkg: "{{item.name}}"
force: "{{item.force|default(omit)}}"
conf_file: "{{item.yum_conf|default(omit)}}"
state: present
register: docker_task_result
until: docker_task_result|succeeded
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
with_items: "{{ docker_package_info.pkgs }}"
notify: restart docker
when: not (ansible_os_family in ["CoreOS", "Container Linux by CoreOS"] or is_atomic) and (docker_package_info.pkgs|length > 0)
- name: ensure service is started if docker packages are already present
service:
name: docker
state: started
when: docker_task_result is not changed
- name: flush handlers so we can wait for docker to come up
meta: flush_handlers
- name: set fact for docker_version
command: "docker version -f '{{ '{{' }}.Client.Version{{ '}}' }}'"
register: installed_docker_version
changed_when: false
- name: check minimum docker version for docker_dns mode. You need at least docker version >= 1.12 for resolvconf_mode=docker_dns
fail:
msg: "You need at least docker version >= 1.12 for resolvconf_mode=docker_dns"
when: >
dns_mode != 'none' and
resolvconf_mode == 'docker_dns' and
installed_docker_version.stdout|version_compare('1.12', '<')
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- name: Set docker systemd config
import_tasks: systemd.yml
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- name: ensure docker service is started and enabled
service:
name: "{{ item }}"
enabled: yes
state: started
with_items:
- docker