What is Docker?  Docker is a platform that lets you package your applications and all their dependencies into a single  container so they run consistently across different environments. it provide better approach to create and manage build to any platform Think of it like this: Without Docker: "It works on my machine" problem happens because environments differ. With Docker: You send the same container image that runs exactly the same everywhere — laptop, server, or cloud. Key points: Image = Blueprint/template of your app. Container = Running instance of that image. Dockerfile = Script with instructions to build an image. 2. Install Docker on Windows Check your Windows Version Docker Desktop works best on Windows 10/11 Pro/Enterprise (with WSL2). If you have Windows Home , it also works but WSL2 is required. Download Docker Desktop Go to Docker official site Download Docker Desktop for Windows . Install Docker Desktop Run th...

 What is Maven? Apache Maven is a build automation and project management tool primarily used for Java projects . It is based on a Project Object Model (POM) file ( pom.xml ) which defines a project’s structure, dependencies, plugins, and build lifecycle. 📂 POM (Project Object Model) The heart of Maven is the pom.xml file which defines: Project metadata (name, version, etc.) Dependencies Plugins Build instructions Example of pom.xml <project xmlns="http://maven.apache.org/POM/4.0.0"          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0                               http://maven.apache.org/xsd/maven-4.0.0.xsd">     <modelVersion>4.0.0</modelVersion>     <groupId>com.example</groupId>     <artifactId>my...

  ✅ What is Jenkins? (Simple Explanation for Students) 🔧 Jenkins is a free tool used by developers to automate tasks like: Building code Testing code Deploying applications 💡 Think of Jenkins as a Robot Assistant : Whenever you write code and push it to GitHub, Jenkins can: Automatically test if the code works Automatically build the app Automatically deploy it to a server 🔁 This process is called CI/CD : CI – Continuous Integration (build + test automatically) CD – Continuous Deployment (deploy automatically) 🚀 Jenkins Installation: Key Steps and Important Options 🔷 Windows Installation Steps: Install Java First (JDK) Jenkins needs Java to run. Download JDK from Oracle or OpenJDK Set JAVA_HOME environment variable Add Java to system PATH Download Jenkins Go to https://www.jenkins.io Download the Jenkins Windows Installer (.msi) Run Installer Double-click and follow steps It will install Jenkins as a ...

  ✅ Complete DevOps and SDLC Tutorial for Beginners 1. What is DevOps? Definition: DevOps stands for Development and Operations . It is a culture and practice that combines software development (Dev) and IT operations (Ops) to shorten the development lifecycle and deliver high-quality software continuously. Purpose: DevOps automates the software deployment process using CI/CD pipelines , eliminating manual deployment steps. Key Benefits: Faster software delivery. Improved collaboration between teams. Reduced risk of deployment failures. Continuous improvement and feedback loop. CI/CD in DevOps CI (Continuous Integration): Developers integrate code frequently into a shared repository (e.g., GitHub). Automated build and test process after every integration. CD (Continuous Deployment/Delivery): Continuous Delivery: Automatically deploys code to a staging environment after passing tests. Continuous Deployment: Deploys code directly...

 Lambda , S3 Integration: Lambda : it is server-less  service to perform dynamic operation under multiple S3 Services . it provide set of methods and API to communicate with various services without using resource. Task 1: Connect S3 to lambda to show bucket name, filename and file content when we upload file into s3: 1)  Edit Existing Role of Lambda with S3 { "Version": "2012-10-17", "Statement": [ { "Sid": "Statement1", "Effect": "Allow", "Action": [ "s3:GetObject", "s3:ListBucket" ], "Resource": [ "arn:aws:s3:::s3lambdapracticeindore/*" ] } ] } 2)  Code of S3 method to display content of S3 bucket file: import json import boto3 import os def lambda_handler ( event , context ):     bucket_name = event[ 'Records' ][ 0 ][ 's3' ][ 'bucket' ][ 'name' ]     object_key = event[ 'R...

  Step 1: What is Route 53? (Classroom Explanation) Route53 is intermediate service of AWS that connect custom domain to AWS Instance. Domain provide path or url such as www.google.com is the domain and int point to google.com server. We should always integrate hosting server as a nameserver property under domain name. create free domain https://freedomain.one/Direct.sv?cmd=userDomainPanel&domainname=codemugindore.work.gd #!/bin/bash sudo yum update -y # Install Apache web server (httpd) sudo yum install -y httpd sudo systemctl start httpd sudo systemctl enable httpd # Create a simple HTML file to verify the web server is running echo "<html><h1>Welcome to Apache Web Server on Amazon Linux!</h1></html>" > /var/www/html/index.html "Imagine the internet is a giant city, and every website is a house with a unique address (IP address, like 192.0.2.1). But these addresses are hard to remember, so we give houses names—like ' www.example.co...

 What is EKS in AWS | How it works explained step by step tutorials: Amazon Elastic Kubernetes Service (EKS) is a managed service that makes it easy to run Kubernetes on AWS without needing to install, operate, and maintain your own Kubernetes control plane. Here's a step-by-step guide to help you understand how it works: Step-by-Step Tutorial 1. Set Up Your AWS Account Ensure you have an AWS account and the necessary permissions to create and manage resources. 2. Install AWS CLI and kubectl AWS CLI : Install the AWS Command Line Interface (CLI) to interact with AWS services. kubectl : Install kubectl , a command-line tool for running commands against Kubernetes clusters. 3. Create an IAM Role for EKS Create an IAM role that EKS will use to access other AWS services. 4. Create a VPC (Virtual Private Cloud) Use CloudFormation or the AWS Management Console to create a VPC where your EKS cluster will reside. 5. Create an EKS Cluster Using AWS Management Console : Navigate to the EKS s...

 Create CI-CD Pipeline using codepipeline, github, codebuild, codedeploy,s3: This article provide simple pipeline to deploy static website from github to s3 bucket using codepipeline services of aws. Step1st: Create github repository and upload normal web site  (index.html,style.css) Step2nd: create iam role  name as codepipelinerole add (codebuildaccess, codepipelineaccess,s3fullaccess) Add Inline Cloudwatch Policy { "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action": [ "logs:CreateLogGroup", "logs:CreateLogStream", "logs:PutLogEvents" ], "Resource": "arn:aws:logs:us-east-1:060795909285:log-group:/aws/codebuild/*" } ] } Step3rd: create s3 bucket and unblock public access and enable static website option and add policy to GETBucket & putobject. {     "Version": "2012-10-17",     "Statemen...

  What is AWS Elastic Beanstalk? AWS Elastic Beanstalk is a fully managed service that makes it easy to deploy, manage, and scale web applications and services. You can simply upload your code, and Elastic Beanstalk automatically handles the deployment, from capacity provisioning, load balancing, and auto-scaling to application health monitoring. Step-by-Step Guide to AWS Elastic Beanstalk Step 1: Set Up Your AWS Environment Create an AWS Account : If you don't have an AWS account, sign up for one . Sign in to AWS Management Console : Go to the AWS Management Console and sign in with your credentials. Step 2: Create an Elastic Beanstalk Environment Open Elastic Beanstalk Console : Navigate to the Elastic Beanstalk console . Click on "Create New Application". Name Your Application : Enter a name for your application and click "Create Application". Create an Environment : Click on "Create Environment" and choose "Web Server Environment". Click...