c12s-kubespray/roles/download/tasks/download_container.yml
2019-12-05 07:24:32 -08:00

137 lines
5.1 KiB
YAML

---
- name: container_download | Make download decision if pull is required by tag or sha256
include_tasks: set_docker_image_facts.yml
when:
- download.enabled
- download.container
tags:
- facts
- block:
- name: download_container | Set a few facts
import_tasks: set_container_facts.yml
run_once: "{{ download_run_once }}"
tags:
- facts
- name: download_container | Determine if image is in cache
stat:
path: "{{ image_path_cached }}"
delegate_to: localhost
delegate_facts: no
register: cache_image
changed_when: false
become: false
when:
- download_force_cache
- name: download_container | Set fact indicating if image is in cache
set_fact:
image_is_cached: "{{ cache_image.stat.exists | default(false) }}"
tags:
- facts
when:
- download_force_cache
- name: download_container | Upload image to node if it is cached
synchronize:
src: "{{ image_path_cached }}"
dest: "{{ image_path_final }}"
use_ssh_args: "{{ has_bastion | default(false) }}"
mode: push
delegate_facts: no
register: upload_image
failed_when: not upload_image
run_once: "{{ download_run_once }}"
until: upload_image is succeeded
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
when:
- download_force_cache
- image_is_cached
- not download_localhost
- ansible_os_family not in ["CoreOS", "Coreos", "Container Linux by CoreOS"]
- name: download_container | Load image into docker
shell: "{{ docker_bin_dir }}/docker load < {{ image_path_cached if download_localhost else image_path_final }}"
delegate_to: "{{ download_delegate if download_run_once else inventory_hostname }}"
run_once: "{{ download_run_once }}"
register: container_load_status
failed_when: container_load_status | failed
become: "{{ user_can_become_root | default(false) or not (download_run_once and download_localhost) }}"
when:
- download_force_cache
- image_is_cached
- ansible_os_family not in ["CoreOS", "Coreos", "Container Linux by CoreOS"]
- name: download_container | Prepare container download
include_tasks: check_pull_required.yml
run_once: "{{ download_run_once }}"
when:
- not download_always_pull
- debug:
msg: "XXX Pull required is: {{ pull_required }}"
# NOTE: Pre-loading docker images will not prevent 'docker pull' from re-downloading the layers in that image
# if a pull is forced. This is a known issue with docker. See https://github.com/moby/moby/issues/23684
- name: download_container | Download image if required
command: "{{ image_pull_command }} {{ image_reponame }}"
delegate_to: "{{ download_delegate if download_run_once else inventory_hostname }}"
delegate_facts: yes
run_once: "{{ download_run_once }}"
register: pull_task_result
until: pull_task_result is succeeded
delay: "{{ retry_stagger | random + 3 }}"
retries: 4
become: "{{ user_can_become_root | default(false) or not download_localhost }}"
when:
- pull_required | default(download_always_pull)
# NOTE: image_changed is only valid if a pull is was needed or forced.
- name: download_container | Check if image changed
set_fact:
image_changed: "{{ true if pull_task_result.stdout is defined and not 'up to date' in pull_task_result.stdout else false }}"
run_once: true
when:
- download_force_cache
tags:
- facts
- name: download_container | Save and compress image
shell: "{{ docker_bin_dir }}/docker save {{ image_reponame }} | gzip -{{ download_compress }} > {{ image_path_cached if download_localhost else image_path_final }}"
delegate_to: "{{ download_delegate if download_run_once else inventory_hostname }}"
delegate_facts: no
register: container_save_status
failed_when: container_save_status.stderr
run_once: true
become: "{{ user_can_become_root | default(false) or not download_localhost }}"
when:
- download_force_cache
- not image_is_cached or (image_changed | default(true))
- ansible_os_family not in ["CoreOS", "Coreos", "Container Linux by CoreOS"]
- name: download_container | Copy image to ansible host cache
synchronize:
src: "{{ image_path_final }}"
dest: "{{ image_path_cached }}"
use_ssh_args: "{{ has_bastion | default(false) }}"
mode: pull
delegate_facts: no
when:
- download_force_cache
- not download_localhost
- download_delegate == inventory_hostname
- not image_is_cached or (image_changed | default(true))
- ansible_os_family not in ["CoreOS", "Coreos", "Container Linux by CoreOS"]
- name: download_container | Remove container image from cache
file:
state: absent
path: "{{ image_path_final }}"
when:
- not download_keep_remote_cache
- ansible_os_family not in ["CoreOS", "Coreos", "Container Linux by CoreOS"]
tags:
- download