Internship Prep

📌 Weekly Overview

Week	Theme	Core Focus	Project
1	Linux & Bash Mastery	CLI tools, scripting, permissions	System Monitor Script
2	Git + CI/CD Basics	Version control, GitHub Actions	Java CI/CD Pipeline (GitHub Actions)
3	Java + Concurrency	Threading, Executors, Locks	Multi-threaded Log Analyzer
4	Networking + Sockets	TCP, HTTP, socket programming	Load Balancer (Round Robin)
5	AWS Fundamentals	EC2, S3, IAM, CloudWatch basics	Java App Deployment on EC2
6	Infrastructure as Code	Terraform / CloudFormation	EC2 + S3 Provisioning with Terraform
7	Monitoring & Observability	Prometheus, Grafana, CloudWatch	Monitoring Dashboard for Java App
8	Capstone + Wrap-up	Combine Dev + Ops in one flow	Auto-healing Deployment Pipeline

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📅 Week-by-Week Checklist

✅ Week 1: Linux & Bash Mastery

• Practice CLI: lsof, journalctl, systemctl, awk, sed
• Set up crontab to automate backups or cleanups
• Write scripts for system health, CPU/mem/disk
• Learn file permissions and process management

🔧 Project: system-monitor.sh — a Bash script that logs uptime, memory usage, and active users

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✅ Week 2: Git + CI/CD Basics

• Deep dive into Git branching, stashing, cherry-pick
• Set up GitHub Actions for a Java Maven project
• Integrate unit tests and build steps
• Explore Jenkins or CircleCI (optional)

🔧 Project: ci-demo-java — a Java project with a full CI pipeline using GitHub Actions

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✅ Week 3: Java Concurrency & Internals

• Explore JVM memory model, GC, JIT
• Build threaded tasks with ExecutorService, Callable
• Use synchronized, Semaphore, and BlockingQueue
• Handle concurrency bugs (race conditions, deadlocks)

🔧 Project: log-analyzer — a tool to parse and summarize multiple logs in parallel threads

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✅ Week 4: Networking & Sockets

• Study TCP/IP stack, HTTP, 3-way handshake
• Learn Java Sockets (ServerSocket, InputStream)
• Pipe data between client and backend services
• Add health checks, multithreading

🔧 Project: custom-load-balancer — Round-robin TCP load balancer in Java

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✅ Week 5: AWS Fundamentals

• Set up AWS CLI & IAM roles
• Launch EC2, configure user-data scripts
• Deploy a Java web app on EC2
• Use S3 for static files or backups

🔧 Project: ec2-java-deploy — deploy a Java app to EC2 with auto-start and monitoring enabled

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✅ Week 6: Infrastructure as Code (IaC)

• Learn Terraform basics: providers, resources, variables
• Write a script to create EC2 + S3 + IAM user
• Test and destroy infra cleanly
• Explore CloudFormation YAML format

🔧 Project: infra-iac — deploy full infra stack (EC2 + S3 + CloudWatch agent) using Terraform

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✅ Week 7: Monitoring & Observability

• Learn Prometheus + Grafana basics
• Scrape metrics from Java app
• Set up alert rules (e.g., CPU > 80%)
• Use CloudWatch Logs and Alarms

🔧 Project: java-metrics-dashboard — monitor your app with Prometheus + Grafana

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✅ Week 8: Capstone Week

• Revisit all tools: Bash + Git + Java + AWS + CI/CD
• Automate instance healing with CloudWatch + Lambda
• Ensure log collection, monitoring, alerting
• Polish README, upload all projects to GitHub

🔧 Project: auto-heal-pipeline — auto-redeploy EC2 when app crashes using CloudWatch + Lambda

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📚 Resources

• Linux: The Linux Command Line (William Shotts)
• Java: Java Concurrency in Practice (Brian Goetz)
• Networking: Computer Networking – A Top-Down Approach
• AWS: AWS SkillBuilder
• DevOps: Roadmap.sh