CONFIGURATION OF APACHE WEBSERVER IN DOCKER USING ANSIBLE

Goal:

🔰Write an Ansible PlayBook that does the following operations in the managed nodes:

🔹 Configure Docker

🔹 Start and enable Docker services

🔹 Pull the httpd server image from the Docker Hub

🔹 Run the docker container and expose it to the public

🔹 Copy the html code in /var/www/html directory and start the web server

Before writing the play-book write down all the steps which we are going to perform using ansible

STEPS

1: Create a docker repository = https://download.docker.com/linux/centos/7/x86_64/stable

2: Download the docker package = docker-ce-18.09.1–3.el7.x86_64

3: Start and enable the docker services

4: Install docker SDK (pre-requisite for downloading image)

5: Pull the httpd image

6: Create directory = /ws

7: Copy html page = /ws/

8: Create container using httpd image (volume = /ws:/usr/local/apache2/htdocs

First check ansible is install or not successfully with the command

ansible --version

Create txt file in any directory and mention the ips of target or managed nodes , their users with passwords.

Check the target node ips by the command

ansible all --list-hosts

Now check the connectivity to the target node by pinging

ansible all -m ping

Create the ansible playbook with any name but the extension should be .yml and write the code given below

- hosts: all
  tasks:
- name: "Creating docker repository"
    yum_repository:
       name: Docker
       description: Docker Repo
       baseurl: https://download.docker.com/linux/centos/7/x86_64/stable
       gpgcheck: no
- name: "Downloading  docker package"
    package:
       name: "docker-ce-18.09.1-3.el7.x86_64"
       state: present
- name: "Starting Docker Services"
    service:
       name: "docker"
       state: started
       enabled: yes
- name: Installing Docker SDK
    command: pip3 install docker
- name: "Pulling httpd image from docker"
    docker_image:
       name: httpd:latest
       source: pull
- name: "Creating Directory"
    file: 
       path: :/webpages
       state: directory
- name: "Copying html page"
    copy:
       src: "home.html"
       dest: "/ws/"
- name: "Creating container using httpd Image"
    docker_container:
       name: MyWebsite
       image: httpd:latest
       state: started
       exposed_ports:
       - "80"
       ports:
       - "8888:80"
       volumes:
       - /ws:/usr/local/apache2/htdocs

After writing the ansible playbook check the syntax by the command

ansible-playbook --syntax-check <file_name.yml>

If the syntax is right then run the playbook by the command

ansible-playbook <name.yml>

Now check in the target node docker is configured or not.

In the folder yum.repos.d/ , Docker.repo file is created

And check by the systemctl command the status of the docker

And the docker container of the httpd is also running

Check the website by curl command

curl 172.17.0.1/home.html
HELLO!!