Linux for DevOps using AWS EC2 (Ubuntu) 🐧☁️

This guide explains how to use AWS EC2 Ubuntu as a Linux machine for DevOps practice. You can use this VM for Linux commands, Git, Docker, CI/CD, deployment, and automation.

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🎯 Purpose of Using Linux on AWS EC2 for DevOps

• Practice Linux commands on real server
• Deployment environment
• CI/CD pipeline server
• Docker & Kubernetes practice
• Git server operations
• Log monitoring
• Automation scripting
• Production-like environment

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🚀 Step 1 — Create Linux VM (Ubuntu EC2)

Launch instance with:

Name: devops-linux-server
AMI: Ubuntu Server 22.04 LTS
Instance: t2.micro
Security: Allow SSH, HTTP, HTTPS

Download key:

devops.pem

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🔐 Step 2 — Connect to Linux Server

chmod 400 devops.pem
ssh -i devops.pem ubuntu@your-ec2-ip

Now you are inside Linux machine.

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🐧 Basic Linux Commands for DevOps

File Commands

pwd
ls
ls -la
cd /var/www
mkdir project
rm -rf folder

File Viewing

cat file.txt
less file.txt
tail -f app.log

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📦 Install DevOps Tools on Linux

Update system

sudo apt update && sudo apt upgrade -y

Install Git

sudo apt install git -y

Install Docker

sudo apt install docker.io -y
sudo systemctl start docker
sudo systemctl enable docker

Install Node

sudo apt install nodejs npm -y

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🌐 Linux Networking Commands

ip a
ping google.com
curl localhost:3000
netstat -tulnp

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⚙️ Process Management

ps aux
top
kill -9 PID

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📊 Monitor Linux Server

Check memory

free -m

Check disk

df -h

Check CPU

top

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📜 Linux Logs (DevOps Important)

System logs

tail -f /var/log/syslog

Nginx logs

tail -f /var/log/nginx/access.log

App logs

tail -f app.log

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🔄 DevOps Deployment on Linux

Clone repository

git clone https://github.com/user/project.git
cd project

Install dependencies

npm install

Run app

npm start

Run in background

nohup npm start &

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🔐 Linux Permissions (DevOps Must Know)

chmod 777 file
chmod +x deploy.sh
chown ubuntu:ubuntu file

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🔁 Service Management

Start service

sudo systemctl start nginx

Stop service

sudo systemctl stop nginx

Restart service

sudo systemctl restart nginx

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🧠 DevOps Linux Workflow

Create EC2 Ubuntu
        ↓
SSH into Linux
        ↓
Install Git/Docker
        ↓
Clone Repository
        ↓
Build Application
        ↓
Run Application
        ↓
Monitor Logs

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⭐ Most Important Linux Commands for DevOps

ssh
ls
cd
pwd
chmod
chown
grep
find
top
kill
ps
df -h
free -m
tail -f
systemctl

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📌 Use Case

• Linux practice
• DevOps practice
• Deployment server
• CI/CD server
• Docker host
• Kubernetes node
• Cloud Linux machine

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