Introduction

In this tutorial, we aim to guide you through the steps of deploying applications on Amazon Web Services (AWS) using DevOps practices. Here, you will learn how to utilize AWS services along with DevOps for efficient and smooth application deployment.

You will walk away with:
1. A comprehensive understanding of AWS and DevOps.
2. Hands-on experience from deploying an application using AWS and DevOps.

Prerequisites:
1. Basic knowledge of AWS services.
2. Understanding of DevOps practices.
3. AWS Account (You can create a free tier account if you don't have one.)

Step-by-Step Guide

Let's begin with the step-wise process:

Step 1: Setting up AWS

• Sign up for an AWS account if you don't have one.
• Setup AWS CLI (Command Line Interface) on your local machine. You can follow the official AWS guide here.

Step 2: Setting up the Environment

• Choose an AWS region that is nearest to you.
• Create an EC2 instance in the region. This will be our development server.
• Install the necessary software on the EC2 instance. You can install git, docker, node.js, etc., depending on your application's requirements.

Step 3: Setting up DevOps Tools

• Install Jenkins on your EC2 instance for Continuous Integration and Continuous Deployment (CI/CD).
• Create a new pipeline in Jenkins and configure it to pull code from your git repository.

Step 4: Deploying the Application

• Write a deployment script. This script will be used by Jenkins to deploy your application.
• Add the deployment script to your Jenkins pipeline.
• Trigger a build in Jenkins. If everything is set up correctly, your application will be deployed on your EC2 instance.

Code Examples

Example 1: AWS CLI Installation

Here's a code snippet for installing AWS CLI on a Linux-based EC2 instance:

# Update the package lists for upgrades and new package installations
sudo apt-get update 
# Install AWS CLI
sudo apt-get install awscli

Example 2: Jenkins Installation

Here's how you can install Jenkins on your EC2 instance:

# Update the package lists for upgrades and new package installations
sudo apt-get update 
# Install Java JDK
sudo apt-get install openjdk-8-jdk
# Download Jenkins package. You might need to replace the URL with the latest 
# Jenkins package available on the Jenkins website
wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -
# Add the Jenkins sources to your sources list
echo deb http://pkg.jenkins.io/debian-stable binary/ | sudo tee /etc/apt/sources.list.d/jenkins.list
# Update the package lists for upgrades and new package installations
sudo apt-get update
# Install Jenkins
sudo apt-get install jenkins

Summary

In this tutorial, we have covered how to set up an AWS account, configure AWS CLI, set up the development environment, install and configure Jenkins, and finally, deploy the application using a Jenkins pipeline.

For further learning, you can explore different AWS services like AWS Lambda, AWS S3, etc. You can also dig deeper into Jenkins and learn how to configure automated testing in your pipeline.

Practice Exercises

1. Set up a new AWS account and configure AWS CLI.
2. Set up an EC2 instance and install Jenkins on it.
3. Create a pipeline in Jenkins and configure it to pull code from your git repository.
4. Write a deployment script and add it to your Jenkins pipeline.
5. Trigger a build in Jenkins and deploy your application.

Additional Resources

1. AWS CLI User Guide
2. Jenkins User Documentation
3. AWS DevOps Blog