Ansible is an open source IT automation engine used to automate application organization, framework computerization, cloud provisioning, and numerous IT administration tasks. Ansible improves the adaptability, consistency, and dependability of the IT climate.
Podman is an open source containerization platform that packages all the dependencies for building, shipping, and running applications as Podman containers. Using container virtualization technology ensures that an application works seamlessly in any environment. Podman CLI can implement almost all the commands from the Docker CLI.
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In this article, I show you how to automate Podman with Ansible by demonstrating how to automate various operations on the managed node. These are the following operations that you learn how to perform on a managed node:
- Install Podman
- Pull the httpd server image
- Copy the HTML code in the destination directory
- Run the httpd container and expose it to the public
- Start the webserver
For this procedure, I'm using Ansible 2.10.
Playbook for the entire setup
package module, assign the name of the software you need to install. The state tag is used to describe the desired condition of the software, here I use present, which means install.
- name: installing podman package: name: "podman" state: present
Pull the httpd server image from the Podman image repository
Ansible podman image module, pull the
- name: Pull an image containers.podman.podman_image: name: httpd
copy module, copy the webpage from source to destination.
- name: Copying file into home copy: src: /root/ws1/index.html dest: /home
Run the httpd container
Run the container in detached mode and attach the volume to it after exposing its port.
- name: Re-create a redis container containers.podman.podman_container: name: sarthak image: httpd state: started detach: true exposed_ports: - 80 ports: - 4444:80 volumes: /home/:/usr/local/apache2/htdocs/
Running playbook to run Podman services
Confirm your managed node has Podman installed
Podman is not installed on this system, so install it by using the
Next, run the playbook:
Confirm that Podman successfully installed:
Verify the httpd server image was successfully pulled:
Check the web server:
curl [ip address]:[port no]
After following all these steps, Podman will be configured in your systems, and the website will be hosted on the 4444 port.
The complete playbook file:
--- - hosts: podman tasks: - name: installing podman package: name: "podman" state: present - name: Pull an image containers.podman.podman_image: name: httpd - name: Copying file into home copy: src: /root/ws1/index.html dest: /home - name: Re-create a redis container containers.podman.podman_container: name: sarthak image: httpd state: started detach: true exposed_ports: - 80 ports: - 4444:80 volumes: /home/:/usr/local/apache2/htdocs/
[ Need more on Ansible? Take a free technical overview course from Red Hat. Ansible Essentials: Simplicity in Automation Technical Overview. ]
Ansible can be used to install Podman and to deploy Podman containers, simplifying your sysadmin life and adding scalability and flexibility to your environment.