How to Use Ansible to Install and Set Up Docker on Ubuntu 18.04
Ansible is a well-known configuration management utility that simplifies the installation and administration of servers. Docker is a containerization platform that enables developers to encapsulate their applications and dependencies within isolated containers. This article describes how to install and configure Docker on Ubuntu 18.04 using Ansible.
Step 1: Installing Ansible
Install Ansible on your Ubuntu 18.04 server as the first step. To accomplish this, use the following command:
sudo apt-get update
sudo apt-get install ansible
This command will install Ansible and its prerequisites on your Ubuntu 18.04 server.
Step 2: Creating an Ansible Playbook
Next, we must create an Ansible playbook for installing Docker on the server. Create a new file named “docker.yml” in the location of your choice and add the following code:
---
- name: Install Docker
hosts: all
become: true
tasks:
- name: Install dependencies
apt:
name: ["apt-transport-https", "ca-certificates", "curl", "gnupg", "lsb-release"]
state: present
- name: Add Docker GPG key
apt_key:
url: https://download.docker.com/linux/ubuntu/gpg
state: present
- name: Add Docker repository
apt_repository:
repo: deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable
state: present
- name: Install Docker
apt:
name: docker-ce
state: present
This playbook will install the necessary dependencies, add the Docker GPG key and repository, and install Docker on the server.
Step 3: Running the Ansible Playbook
Now that the Ansible configuration has been created, it can be executed on our Ubuntu 18.04 server. Execute the following command to proceed:
ansible-playbook docker.yml
Ansible will immediately execute the configuration and install Docker on the server. After playbook execution has concluded, you can verify the installation by executing the following command:
docker --version
This will display the version of Docker deployed on the server.
Additional Tips
Here are some additional Ansible playbook recommendations for your consideration:
- It is recommended that the Ansible configuration is always executed with sudo privileges.
- The Docker installation can be modified by adding or removing packages and dependencies from the blueprint.
- Ansible can also be used to configure the Docker environment, including container creation, image management, and more.
- Always evaluate your Ansible playbook in a staging environment prior to deploying it in production to avoid problems.
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Conclusion
Ansible is a potent tool that facilitates server management, and Docker is a popular containerization platform that enables developers to package their applications and dependencies into isolated containers. By using Ansible to install and configure Docker on Ubuntu 18.04, you can create a Docker environment on your server swiftly and easily. Always remember to test your Ansible playbook in a staging environment and to optimize your content for search engines to increase its visibility and reach.
FAQs
1. What is Ansible?
Ansible is an open-source automation utility that simplifies server management and application deployment. It uses a simple YAML syntax to define configuration files and automates repetitive duties such as provisioning servers and configuring applications, among others.
2. What is Docker?
Docker is a platform for containerization that enables developers to package their applications and dependencies into isolated containers. It provides a lightweight and efficient method for deploying applications and ensures their compatibility across various environments.
3. Why use Ansible to install and set up Docker?
Ansible simplifies server management and automates repetitive activities such as application installation and configuration. By using Ansible to install and configure Docker, you can create a Docker environment on your server rapidly and without having to manually install dependencies, add repositories, and configure settings.
4. Can I use Ansible to manage Docker containers?
Ansible simplifies server management and automates repetitive activities such as application installation and configuration. By using Ansible to install and configure Docker, you can create a Docker environment on your server rapidly and without having to manually install dependencies, add repositories, and configure settings.
5. Is Ansible free?
Certainly, Ansible is a freely accessible open-source tool. It is distributed under the GNU General Public License and is supported by a substantial community of contributors.
References
Final Thoughts
This article demonstrates how to install and configure Docker on Ubuntu 18.04 using Ansible. In addition to providing additional recommendations and best practices for utilizing Ansible and Docker, we have also addressed frequently inquired questions. By adhering to these steps and best practices, you can create and administer a Docker environment on your server with ease and streamline deployment.
