CentOS 7 Ansible Test Image

CentOS 7 Docker container for Ansible playbook and role testing.
This container is used to test Ansible roles and playbooks (e.g. with molecule) running locally inside the container.
A user ansible is created with password-less sudo configured.

Tags

The following tags are available:

• latest: Latest stable version of Ansible, on Python 2.7.x.

How to Build

If you need to build the image on your own locally, do the following:

1. Install Docker.
2. Clone the repository and cd into this directory.
3. Run docker build -t centos7-ansible .

How to Use Standalone

1. Install Docker.
2. Pull this image from Docker Hub or use the image you built earlier, e.g. called centos7-ansible:latest for the next step.

docker pull timgrt/centos7-ansible:latest

2. You can also pull the image from the Github Container registry.

docker pull ghcr.io/timgrt/docker-centos7-ansible:main

3. Run a container from the image. To test my Ansible roles, I add in a volume mounted from the current working directory with --volume=`pwd`:/etc/ansible/roles/role_under_test:ro.

docker run --detach --privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro timgrt/centos7-ansible:latest

4. Use Ansible inside the container.

docker exec --tty [container_id] env TERM=xterm ansible --version

docker exec --tty [container_id] env TERM=xterm ansible-playbook /path/to/ansible/playbook.yml

How to Use with Molecule

1. Install Docker.
2. Install Molecule.
3. Add Image in molecule.yml.

For example:

---
driver:
  name: docker
platforms:
  - name: centos7
    image: timgrt/centos7-ansible:latest
    volumes:
      - /sys/fs/cgroup:/sys/fs/cgroup:ro
    privileged: true
    command: "/usr/sbin/init"
    pre_build_image: true
provisioner:
  name: ansible
  config_options:
    defaults:
      interpreter_python: auto_silent
      callback_whitelist: profile_tasks, timer, yaml
      stdout_callback: yaml
    ssh_connection:
      pipelining: false
  inventory:
    host_vars:
      centos7:
        ansible_user: ansible

Author

Created 2021 by Tim Grützmacher, inspired by Jeff Geerling