Ansible loves Docker

In this Article i explain you how you can automatically deploy docker to you're web server via ansible.

First of all open you're ansible inventory file with you're preferred editor (I'm using vim):

vim /etc/ansible/hosts

Than add the following of course replace the ip with you're webserver ones 🙃 :

[webserver]
222.110.10.2

If you have not already have a public ssh keygen generate it with:

ssh-keygen -t rsa

and copy it to the destination location:

ssh-copy-id root@222.110.10.2

Enter you're password and done. Now we can start deploying docker with ansible. in the following i give you the installdocker.yml script for deploying ansible on a red hat based system:

---

- name: Install Docker
  hosts: webserver 
  become: true  
  become_user: root 
  tasks:
  - name: Update System
    command: yum update -y 
  - name: Add repository docker-ce-stable
    ansible.builtin.yum_repository: 
      name:  docker
      description: Docker CE Stable - $basearch 
      baseurl: https://download.docker.com/linux/rhel/$releasever/$basearch/stable 
      gpgkey: https://download.docker.com/linux/rhel/gpg 
      repo_gpgcheck: 1                                    
      enabled: true
      state: present      
  
  - name: Install Docker 
    ansible.builtin.yum:
      name:
        - docker-ce
        - docker-ce-cli
        - containerd.io
        - docker-buildx-plugin
        - docker-compose-plugin 
      state: latest
  
  - name: Start & Enable Docker
    systemd:
        name: docker
        state: started
        enabled: yes

now just run it with:

ansible-playbook installdocker.yml