🚀📅 Day 48 DevOps Challenge - Ansible Project: Deploying a Web App with Ansible 🔥
Passionate software engineering student | DevOps enthusiast | Seeking innovation and excellence in software engineering! 👨💻
Welcome to this exciting Ansible project where we'll explore the power of Ansible playbooks by deploying a simple web app. In this project, we'll follow a step-by-step approach to create EC2 instances, set up Ansible, and use it to install and deploy a web application using Nginx.
Task 01: Setting Up the Environment 🛠️
Step 1: Create 3 EC2 Instances
To start, we'll create 3 EC2 instances using the same key pair. These instances will serve as our web servers.
Step 2: Install Ansible on the Host Server
Next, on the host server, we'll install Ansible, a powerful automation tool that will help us manage and configure our EC2 instances.
sudo apt update
sudo apt install software-properties-common
sudo add-apt-repository --yes --update ppa:ansible/ansible
sudo apt install ansible
Step 3: Configure SSH Key for Passwordless Authentication 🗝️
We'll generate an SSH key pair on our Ansible master server using ssh-keygen. We will then copy the public key, stored in ~/.ssh/id_rsa.pub, to the target server's ~/.ssh/authorized_keys file. This approach enables passwordless authentication and facilitates easy access to the target server.
--> In master server
--> In target server-1
--> In target server-2
Step 4: Access the Inventory File
We'll access the Ansible inventory file using a text editor (here we'll use sudo vim /etc/ansible/hosts) to define the IP addresses of our EC2 instances. This file is crucial for Ansible to know which servers to manage.
Task 02: Creating Ansible Playbook 📘
Step 1: Create a Playbook to Install Nginx
We'll create an Ansible playbook, which is a YAML file defining the tasks Ansible will perform. Our playbook will include tasks to install Nginx, a popular web server, on the EC2 instances.
---
- name: Install Nginx
hosts: all # Specify the group of EC2 instances in your inventory
become: true # Run tasks with elevated privileges
tasks:
- name: Install Nginx
apt:
name: nginx
state: present
- name: Start Nginx service
service:
name: nginx
enabled: yes
state: started
Step 2: Deploy a Sample Webpage
We'll extend our Ansible playbook to deploy a sample webpage using Nginx.
---
tasks:
# Previous tasks remain unchanged
- name: Create HTML directory
file:
path: /var/www/html
state: directory
- name: Create index.html file
copy:
content: "<html><body><h1>Hello, Ansible! 🚀</h1></body></html>"
dest: /var/www/html/index.html
--> target server-1
--> target server-2
So, in addition to the method we just covered, there's another way to achieve this. We can create an index.html file with the necessary source code. Additionally, we'll create a playbook to perform this particular task. like this :
Conclusion 🎉
By completing this Ansible project, you've gained hands-on experience in automating server setup and application deployment. Ansible is a powerful tool that can be leveraged for various automation tasks in a system administration role. Explore further and adapt this project to suit your specific needs and applications. Happy automating! 🔥
