ansible-role-container-regi.../tasks/docker-update.yml

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YAML

# tasks file for ansible-role-container-registry
# the tasks will ensure docker is up to date.
- name: can docker be updated
shell: yum check-update docker
register: docker_check_update
failed_when: docker_check_update.rc not in [0, 100]
changed_when: docker_check_update.rc == 100
- name: set docker_rpm_needs_update fact
set_fact: docker_rpm_needs_update={{ docker_check_update.rc == 100 }}
- name: stop all containers before update
# xargs is preferable to docker stop $(docker ps -q) as that might generate a
# a too long command line
shell: docker ps -q | xargs --no-run-if-empty -n1 docker stop
when: docker_rpm_needs_update
- name: ensure docker is installed
yum:
name: docker
state: present
when: docker_rpm_needs_update
- name: update the docker package
yum: name=docker state=latest update_cache=yes # cache for https://bugs.launchpad.net/tripleo/+bug/1703830
when: docker_rpm_needs_update
notify: restart docker service