RHEL 9 Installation Guide

Red Hat Enterprise Linux 9 is a reliable and high-performance operating system designed for enterprise environments. This guide covers installation from scratch and basic configuration.

System Requirements

• 64-bit x86_64 processor (minimum 1.5 GHz)
• Minimum 2GB RAM (recommended 4GB+)
• Minimum 20GB disk space
• Network interface card

ISO Download and Boot USB Preparation

# Download ISO from Red Hat Customer Portal
# Create bootable USB on Linux
sudo dd if=rhel-9.3-x86_64-dvd.iso of=/dev/sdb bs=4M status=progress oflag=sync

Verify USB
sync

Post-Installation Configuration

# Subscription registration
sudo subscription-manager register --username=YOUR_USER
sudo subscription-manager attach --auto

System update
sudo dnf update -y
Install essential tools
sudo dnf install -y vim wget curl git htop tmux
Set hostname
sudo hostnamectl set-hostname server01.example.com
Set timezone
sudo timedatectl set-timezone Europe/Istanbul
Firewall configuration
sudo systemctl enable --now firewalld
sudo firewall-cmd --permanent --add-service=ssh
sudo firewall-cmd --reload

Conclusion

RHEL 9 installation and basic configuration is complete. The system is now production-ready.