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---
# This snippet determines if a Docker upgrade is required by checking the inventory
# variables, the available packages, and sets l_docker_upgrade to True if so.
- set_fact:
docker_upgrade: True
when: docker_upgrade is not defined
- name: Check if Docker is installed
command: rpm -q docker
register: pkg_check
failed_when: pkg_check.rc > 1
changed_when: no
- name: Get current version of Docker
command: "{{ repoquery_cmd }} --installed --qf '%{version}' docker"
register: curr_docker_version
changed_when: false
- name: Get latest available version of Docker
command: >
{{ repoquery_cmd }} --qf '%{version}' "docker"
register: avail_docker_version
# Don't expect docker rpm to be available on hosts that don't already have it installed:
when: pkg_check.rc == 0
failed_when: false
changed_when: false
- fail:
msg: This playbook requires access to Docker 1.10 or later
# Disable the 1.10 requirement if the user set a specific Docker version
when: docker_version is not defined and (docker_upgrade is not defined or docker_upgrade | bool == True) and (pkg_check.rc == 0 and (avail_docker_version.stdout == "" or avail_docker_version.stdout | version_compare('1.10','<')))
# Default l_docker_upgrade to False, we'll set to True if an upgrade is required:
- set_fact:
l_docker_upgrade: False
# Make sure a docker_verison is set if none was requested:
- set_fact:
docker_version: "{{ avail_docker_version.stdout }}"
when: pkg_check.rc == 0 and docker_version is not defined
- name: Flag for Docker upgrade if necessary
set_fact:
l_docker_upgrade: True
when: pkg_check.rc == 0 and curr_docker_version.stdout | version_compare(docker_version,'<')
- name: Flag to delete all images prior to upgrade if crossing Docker 1.10 boundary
set_fact:
docker_upgrade_nuke_images: True
when: l_docker_upgrade | bool and docker_upgrade_nuke_images is not defined and curr_docker_version.stdout | version_compare('1.10','<') and docker_version | version_compare('1.10','>=')
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