☁️ VPS Setup & Management

📦 Basic Setup

apt update && apt upgrade -y

Update all system packages

apt install sudo curl wget git -y

Install essential tools

timedatectl set-timezone Asia/Kolkata

Set timezone to IST

hostnamectl set-hostname myserver

Change hostname

👥 User Management

adduser username

Create new user

usermod -aG sudo username

Add user to sudo group

passwd username

Change user password

deluser --remove-home username

Delete user with home directory

🛡️ UFW Firewall

ufw allow 22/tcp

Allow SSH port

ufw allow 80,443/tcp

Allow HTTP/HTTPS

ufw enable

Enable firewall

ufw status verbose

Check firewall status

⚙️ System Optimization

swapoff -a && sed -i '/swap/d' /etc/fstab

Disable swap permanently

sysctl vm.swappiness=10

Reduce swappiness

fallocate -l 2G /swapfile

Create 2GB swap file

chmod 600 /swapfile && mkswap /swapfile && swapon /swapfile

Activate swap file

🔒 Security & Hardening

🔑 SSH Security

nano /etc/ssh/sshd_config

Edit SSH configuration

PermitRootLogin no

Disable root SSH login

PasswordAuthentication no

Disable password auth (use keys)

systemctl restart ssh

Restart SSH service

🚫 Fail2Ban

apt install fail2ban -y

Install Fail2Ban

cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local

Copy config file

fail2ban-client status sshd

Check SSH jail status

fail2ban-client set sshd unbanip IP_ADDRESS

Unban IP address

🛡️ Cloudflare Rules

(http.host eq "panel-name" and starts_with(http.request.uri.path, "/api/")) or (http.host in {"node-name" })

Panel & node protection rule

(cf.client.bot) or (cf.threat_score gt 14)

Block bots & high threat scores

(http.request.uri.path contains "/wp-admin")

WordPress admin protection

(http.request.uri.path contains "/xmlrpc.php")

Block XML-RPC attacks

🔐 SSL Security

openssl req -new -newkey rsa:2048 -nodes -keyout server.key -out server.csr

Generate SSL Certificate Signing Request

openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048

Generate Diffie-Hellman parameters

ssl_protocols TLSv1.2 TLSv1.3;

Nginx TLS protocol configuration

ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512;

Strong SSL ciphers configuration

🐳 Docker & Containers

📦 Docker Setup

curl -fsSL https://get.docker.com -o get-docker.sh

Download Docker install script

sh get-docker.sh

Install Docker

usermod -aG docker $USER

Add user to docker group

systemctl enable --now docker

Enable & start Docker service

🧩 Docker Compose

curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

Download Docker Compose

chmod +x /usr/local/bin/docker-compose

Make it executable

docker-compose up -d

Start services in background

docker-compose down

Stop and remove containers

📦 Container Commands

docker ps -a

List all containers

docker logs container_name

View container logs

docker exec -it container_name bash

Enter container shell

docker system prune -a

Clean up unused resources

🌐 Docker Networking

docker network create mynetwork

Create custom network

docker volume create myvolume

Create persistent volume

docker network ls

List all networks

docker volume ls

List all volumes

🌐 Nginx Web Server

📦 Nginx Installation

apt install nginx -y

Install Nginx

systemctl enable nginx

Enable auto-start

nginx -t

Test configuration

systemctl reload nginx

Reload configuration

🔒 SSL Certificates

apt install certbot python3-certbot-nginx -y

Install Certbot for Nginx

certbot --nginx -d example.com -d www.example.com

Get SSL certificate

certbot renew --dry-run

Test certificate renewal

certbot renew

Renew certificates

⚙️ Nginx Configuration

nano /etc/nginx/sites-available/example.com

Create new site configuration

ln -s /etc/nginx/sites-available/example.com /etc/nginx/sites-enabled/

Enable site configuration

rm /etc/nginx/sites-enabled/default

Remove default site

nginx -s reload

Reload Nginx configuration

⚡ Nginx Optimization

worker_processes auto;

Auto-detect CPU cores

worker_connections 1024;

Set worker connections

gzip on;

Enable Gzip compression

client_max_body_size 100M;

Increase upload size limit

🗄️ Database Management

🐬 MySQL Installation

apt install mysql-server -y

Install MySQL Server

mysql_secure_installation

Secure MySQL installation

mysql -u root -p

Login to MySQL

CREATE DATABASE dbname;

Create new database

🐘 PostgreSQL Installation

apt install postgresql postgresql-contrib -y

Install PostgreSQL

sudo -i -u postgres

Switch to postgres user

createuser --interactive

Create PostgreSQL user

createdb dbname

Create new database

🍃 MongoDB Installation

wget -qO - https://www.mongodb.org/static/pgp/server-6.0.asc | sudo apt-key add -

Add MongoDB repository key

echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/6.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-6.0.list

Add MongoDB repository

apt update && apt install mongodb-org -y

Install MongoDB

systemctl start mongod

Start MongoDB service

⚡ Redis Installation

apt install redis-server -y

Install Redis

nano /etc/redis/redis.conf

Edit Redis configuration

systemctl restart redis

Restart Redis service

redis-cli ping

Test Redis connection

📊 System Monitoring

🖥️ System Resources

top

Real-time system monitoring

htop

Interactive process viewer

df -h

Check disk space usage

free -m

Check memory usage

🌐 Network Monitoring

netstat -tulpn

Show all listening ports

ss -tulpn

Modern socket statistics

iftop

Real-time bandwidth monitoring

nethogs

Per-process bandwidth usage

📋 Log Files

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

Monitor Nginx access logs

journalctl -f

Follow system logs

dmesg | tail -20

Check kernel messages

grep -i error /var/log/syslog

Search for errors in syslog

⚡ Performance Tools

iostat

CPU and I/O statistics

vmstat 1

Virtual memory statistics

mpstat

CPU utilization statistics

sar -u 1 3

System activity report

📱 Social Links

YouTube

Subscribe for coding tutorials, development guides, and tech reviews.

Subscribe

Instagram

Follow for daily updates, behind the scenes content, and community highlights.

Follow

Discord

Join our community for support, discussions, and project collaboration.

Join Server

💬 Discord Communities

👥 Main Community

💻 Development

Aarna M.AIII

👑 Lead Developer

Expert in server management and plugin development. Creates amazing Minecraft experiences.

🎮 Minecraft Expert

KARER ZA

🔧 Server Administrator

Manages and optimizes Minecraft servers for best performance and player experience.

🎮 Minecraft Expert

Rigo™

⚙️ Plugin Developer

Creates custom Minecraft plugins and mods to enhance gameplay and server functionality.

🎮 Minecraft Expert

Nobita

👑 Founder & Project Lead

Oversees all Coding Hub projects and ensures everything runs smoothly. Passionate about community building.

👑 Founder