Installing Docker on Ubuntu with Ansible
In your efforts to run hosts for Docker containers, you will inevitably come across the need to install Docker automatically via configuration management.
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Here is a quick Ansible playbook to install Docker on Ubuntu 14.04 or 16.04 LTS, and optionally, enable Docker to use insecure registries in a defined IP address or range:
- hosts: all become: true tasks: - name: ensure repository key is installed apt_key: id: "58118E89F3A912897C070ADBF76221572C52609D" keyserver: "hkp://p80.pool.sks-keyservers.net:80" state: present - name: ensure docker registry is available # For Ubuntu 14.04 LTS, use this repository: apt_repository: repo='deb https://apt.dockerproject.org/repo ubuntu-trusty main' state=present # For Ubuntu 16.04 LTS, use this repo instead: # apt_repository: repo='deb https://apt.dockerproject.org/repo ubuntu-xenial main' state=present - name: ensure docker and dependencies are installed apt: name=docker-engine update_cache=yes # Uncomment the following to enable insecure registries with Docker #- name: ensure docker can use insecure registries in 10.11.0.0/16 # lineinfile: "dest=/etc/default/docker regexp=^DOCKER_OPTS line=DOCKER_OPTS='--insecure-registry 10.11.0.0/16'" - service: name=docker state=restarted
Please note, though, that using insecure registries is made difficult on purpose. You should opt for using a secured registry whenever possible.
Now that you have Docker installed, why not spin up some containers with Ansible?