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Ansible playbook for modifying /etc/docker/daemon.json config (based on https://stackoverflow.com/questions/50796341/add-a-new-key-value-to-a-json-file-using-ansible)
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- hosts: all | |
become: yes | |
gather_facts: false | |
vars: | |
tasks: | |
- name: Check that the /etc/docker/daemon.json exists | |
stat: | |
path: /etc/docker/daemon.json | |
register: stat_result | |
- block: | |
- name: load var from file | |
slurp: | |
src: /etc/docker/daemon.json | |
register: docker_vars | |
- debug: | |
msg: "{{ docker_vars.content|b64decode|from_json }}" | |
- name: append more key/values | |
set_fact: | |
docker_vars: "{{ docker_vars.content|b64decode|from_json }}" | |
- name: append more key/values | |
set_fact: | |
docker_vars: "{{ docker_vars | default([]) | combine({ item.key : item.value }) }}" | |
with_items: | |
- { key: "log-driver", value: "journald" } | |
- { key: "registry-mirrors", value: [ "http://registry.dev.local" ] } | |
- debug: | |
var: docker_vars | |
- name: write var to file | |
copy: | |
content: "{{ docker_vars | to_nice_json }}" | |
dest: /etc/docker/daemon.json | |
when: stat_result.stat.exists == true |
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