/
install.yml
72 lines (64 loc) · 2.16 KB
/
install.yml
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---
# Upgrading docker engine may cause containers to stop. Take a snapshot of the
# running containers prior to a potential upgrade of Docker.
- name: Check which containers are running
command: docker ps -f 'status=running' -q
become: true
# If Docker is not installed this command may exit non-zero.
failed_when: false
changed_when: false
register: running_containers
# APT starts Docker engine right after installation, which creates
# iptables rules before we disable iptables in Docker config
- block:
- name: Check if docker systemd unit exists
stat:
path: /etc/systemd/system/docker.service
register: docker_unit_file
- name: Mask the docker systemd unit on Debian/Ubuntu
file:
src: /dev/null
dest: /etc/systemd/system/docker.service
owner: root
group: root
state: link
become: true
when: not docker_unit_file.stat.exists
when: ansible_facts.os_family == 'Debian'
- name: Install packages
package:
name: "{{ docker_packages | select | list }}"
cache_valid_time: "{{ apt_cache_valid_time if ansible_facts.os_family == 'Debian' else omit }}"
update_cache: true
state: present
become: True
register: docker_install_result
# If any packages were updated, and any containers were running, wait for the
# daemon to come up and start all previously running containers.
- block:
# At some point (at least on CentOS 7) Docker CE stopped starting
# automatically after an upgrade from legacy docker . Start it manually.
- name: Start docker
systemd:
name: docker
state: started
enabled: yes
masked: no
become: True
- name: Wait for Docker to start
command: docker info
become: true
changed_when: false
register: result
until: result is success
retries: 6
delay: 10
- name: Ensure containers are running after Docker upgrade
# noqa no-changed-when
command: "docker start {{ running_containers.stdout }}"
become: true
changed_when: true
when:
- docker_install_result is changed
- running_containers.rc == 0
- running_containers.stdout != ''