main.yml

---
# tasks file for docker

- name: Set docker facts
  openshift_facts:
    role: common
    local_facts:
      deployment_type: "{{ openshift_deployment_type }}"

# Avoid docker 1.9 when installing origin < 1.2 or OSE < 3.2 on RHEL/Centos and
# See: https://bugzilla.redhat.com/show_bug.cgi?id=1304038
- name: Default to latest docker
  set_fact:
    docker_version: ''
    docker_downgrade: False
  
- name: Gather installed version of common package
  shell: >
    rpm -q {{ openshift.common.service_type }} --queryformat '%{version}' | cut -d '.' -f1,2 | grep -v 'not installed'
  register: installed_common_version
  failed_when: false
  changed_when: false
  
- name: Gather available version of common package
  shell: >
    yum list available -e 0 -q "{{ openshift.common.service_type}}" 2>&1 | tail -n +2 | awk '{ print $2 }' | sort -r | tr '\n' ' ' | tail -n 1 | cut -d '.' -f1,2
  register: available_common_version
  failed_when: false
  changed_when: false

- name: Gather installed version of docker
  shell: >
    rpm -q docker --queryformat '%{version}' | cut -d '.' -f1,2 | grep -v 'not installed'
  register: installed_docker_version
  failed_when: false
  changed_when: false
  
- name: Gather available version of docker
  shell: >
    yum list available -e 0 -q "docker" 2>&1 | tail -n +2 | awk '{ print $2 }' | sort -r | tr '\n' ' ' | tail -n 1
  register: available_docker_version
  failed_when: false
  changed_when: false

- set_fact:
    docker_version: "{{ '1.8.2' }}"
  when: " installed_common_version.stdout in ['3.0','3.1','1.0','1.1'] or available_common_version.stdout in ['3.0','3.1','1.0','1.1']"
  
- set_fact:
    docker_downgrade: True
  when: " docker_version < installed_docker_version.stdout and docker_version != ''"

- name: Remove deferred removal and deletion for 1.8.2 downgrades
  command: >
    sed -i 's/--storage-opt dm.use_deferred_deletion=true//' /etc/sysconfig/docker-storage
  when: docker_downgrade | bool and docker_version == '1.8.2'

- name: Downgrade docker
  command: >
    {{ ansible_pkg_mgr }} downgrade -y docker{{ '-' + docker_version if docker_version != '' else '' }}
  when: not openshift.common.is_atomic and docker_downgrade | bool
  
- name: Install docker
  action: "{{ ansible_pkg_mgr }} name=docker{{ '-' + docker_version if docker_version != '' else '' }} state=present"
  when: not openshift.common.is_atomic | bool and not docker_downgrade | bool
  
- name: enable and start the docker service
  service:
    name: docker
    enabled: yes
    state: started
  register: start_result

- set_fact:
    docker_service_status_changed: start_result | changed

- include: udev_workaround.yml
  when: docker_udev_workaround | default(False)