docker-ansible.yml

---
- name: Configure docker on managed node then launch a contaienr and use that container as managed node.
  hosts: dockernode 
  vars:
    expose_port: 8080
    ssh_port: 2222

  tasks:
    - block:
        - name: yum repo for docker
          yum_repository:
            name: docker
            description: "Repo for Docker"
            file: docker_repo
            baseurl: https://download.docker.com/linux/centos/7/x86_64/stable/
            enabled: yes
            state: present
            gpgcheck: no

        - name: install docker package
          command: yum install -y docker-ce --nobest
          when: ansible_distribution ==  "RedHat"
          register: output

        - name: start and enable docker service
          service:
            name: docker
            state: started
            enabled: yes

        - name: firewall conf for docker
          firewalld:
            masquerade: yes
            state: enabled
            permanent: yes
            zone: public

        - name: enable firewall for docker port
          firewalld:
            port: "{{ item }}"
            zone: public
            permanent: yes
            state: enabled
            immediate: yes
          loop:
             - "80/tcp"
             - "443/tcp"
             - "{{ expose_port }}/tcp"
        
        - name: reload firewall
          service:
            name: firewalld
            state: reloaded

        - name: restart docker service
          service:
            name: docker
            state: restarted