Configure webserver inside Docker by using Ansible Automation

Using Ansible-playbook lanuch Docker Container on worker node and run Httpd Container which is linked to local folder where put webpage & this Container is exposed to World and then access Webpage from browser using IP and Port number of worker node.

For this Configuration I take two instance one for Ansible-Master node & Ansible-Target node, I use AWS cloud and EC2 instance is "Amazon Linux".

prerequisites:

Ansible ssh configuration (set-up) master and target node must be done and ansible installed.

Ansible-master-target-SSH-Setup-onAWS (Use given link for ssh configuration)

• NOTE:

For this configuration Ansible master node need Docker collection, and also install python3-pip .

Use this command to install Docker community collection:

  ansible-galaxy collection install community.docker

On ansible master node i create workspace for this configuration named as "mycode" & create code(webpage) "Index.html" which deploy on apache webserver.

open or write ansible-playbook :

My ansible-playbook name is "myweb.yml" ,

NOTE: Ansible-playbook name must be extension " .yml "

  vim myweb.yml

Here some information about playbook tasks:

1. download Docker package:

       tasks:
   
          - name: Install Docker
            yum:
              name: docker
              state: present
   

2. Start and enable Docker service:

        - name: Start Docker service
          systemd:
            name: docker
            state: started
            enabled: yes
   

3. Create a file which will add to my apache container create file in path /root/code :

   File module in ansible-playbook which help to create directory.

            - name: create file for adding container volume
              file:
                  state: directory
                   path: /root/code1
   

4. Local code or local Webpage copy:

   Copy module in ansible-playbook helps to copy my local master node code to target node dest: /root/code1 this destination is point 3 i have created

                - name: copy local code or deploy webpage
                  copy:
                    src: index.html
                    dest: /root/code1
   

5. Pull httpd image for Docker Container:

             - name: Pull httpd image from Docker Hub
               docker_image:
                 name: httpd
                 source: pull
   

6. Launch Docker container using httpd image & exposed this httpd container for clients. Here i have atached volume to container this volume contain my webpage "index.html" from master node to Target node to docker httpd container:

             - name: Run httpd container
               docker_container:
                 name: my_httpd_container
                 image: httpd
                 state: started
                 exposed_ports: 80
                 ports:
                  - "8080:80"
                 volumes:
                  - /root/code1/index.html/:/usr/local/apache2/htdocs/index.html
                 restart_policy: always
   

Run ansible playbook :

ansible-playbook myweb.yml

After ansible-playbook run successfully, on Target node Automation take place & configure our tasks

Now From Browser i can access my Webserver :

On google - "< public ip of target node > : port no /index.html"

Also from my laptop command prompt: using "curl" command