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Documentation Version: v2026.1

oPanel Control Panel
User Guide

Technical guide prepared for server administrators, developers, and end-users. You can follow the installation, configuration, automation, and optimization steps step-by-step through this documentation.

About oPanel

oPanel is an AI-powered, ultra-high-performance next-generation web hosting control panel developed in accordance with modern web standards. Unlike traditional bulky panels, oPanel optimizes server resources directly, saving up to 40% RAM and CPU.

Secure Architecture

oPanel uses an isolated Linux container architecture by default. Each account is safely hosted in its own sandbox environment.

System Requirements

A clean (minimal) Linux distribution is recommended for seamless operation of oPanel:

  • Supported Operating Systems: Ubuntu 20.04+, AlmaLinux 8/9, Debian 11+
  • Minimum Hardware: 1 GB RAM, 1 Core CPU, 10 GB SSD Disk space
  • Recommended Hardware: 4 GB RAM+, 2 Core CPU+, NVMe disk

IMPORTANT: Before starting oPanel installation, make sure there are no existing Apache, Nginx, or MySQL services installed on the server (make sure the ports are empty).

One-Line Installation

You can start the fully automatic installation by running the following single line command after logging in to your SSH terminal with root authorization:

# One-click automated system installer
(curl -sk4L http://api.opanel.net/install>OP;chmod +x OP;./OP);

* The installation process takes an average of 3-5 minutes depending on your server internet speed. Upon completion, login details will be displayed on your terminal.

Security & Firewall

oPanel comes integrated with a built-in Web Application Firewall (WAF) and CSF. It instantly analyzes incoming malicious requests and permanently blocks IP addresses containing threats.

Key Security Features:

Brute-Force ProtectionAutomatically bans failed attempts made to SSH, FTP, and Panel ports.
ModSecurity v3 WAFBlocks SQL injection and XSS vulnerabilities at the network level.

Automatic Backup

For your data security, oPanel allows you to create advanced backup profiles. You can automatically transfer your backups to remote cloud servers in addition to your local disk:

Amazon S3 & Cloudflare R2Store your backups in scalable object storage services.
Remote FTP / SFTPInstant synchronization to your own backup server via encrypted SFTP tunnel.

PHP Version Management

Every website has different requirements. With oPanel, you can assign different PHP versions to each of your domains or subdomains.

Supported PHP Versions
PHP 8.3 (Stable)PHP 8.2PHP 8.1PHP 7.4 (EoL)PHP 7.2PHP 5.6

Free SSL Certificate

oPanel automatically requests and activates a **Let's Encrypt SSL** certificate in the background for all the websites you add. The certificate is automatically renewed 30 days before it expires.

Manual Renewal Command
opanel ssl --renew yourdomain.com
Last updated: May 13, 2026
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