How to Install & Optimize CyberPanel with OpenLiteSpeed on Linux VPS (2026 Guide)

For high-traffic WordPress websites, WooCommerce stores, and web development agencies, traditional Apache-based hosting stacks often struggle under heavy concurrent traffic. By combining a high-performance Linux Cloud VPS with CyberPanel and the OpenLiteSpeed event-driven web server, you can achieve enterprise-grade speeds, native LSCache acceleration, and automated SSL certificate management at a fraction of the cost of proprietary control panels.

In this comprehensive 2026 step-by-step tutorial, we walk through the complete deployment of CyberPanel with OpenLiteSpeed on a fresh Linux VPS (Ubuntu 22.04 / 24.04 LTS or AlmaLinux 8/9). We cover initial server hardening, one-command automated installation, Let's Encrypt SSL issuance, and advanced PHP/Redis tuning to achieve sub-100ms Time to First Byte (TTFB).

Why Choose CyberPanel with OpenLiteSpeed?

Before beginning the installation, it is important to understand why the CyberPanel stack outperforms standard cPanel or Apache environments. To see how VPS architectures compare against managed cloud setups, read our in-depth Shared vs VPS vs Cloud Hosting comparison.

Server Prerequisites

To ensure a smooth, stable installation without package dependency conflicts, verify your Linux VPS meets these minimum system requirements:

• Supported OS: Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, or AlmaLinux 8/9 (A freshly installed, clean operating system with no existing web servers installed).
• Hardware Specifications: Minimum 1 vCPU core, 2GB RAM (4GB RAM recommended for production stores with Redis), and 20GB NVMe storage.
• Root Privileges: Full SSH root access.
• Domain & DNS: A registered domain name pointed to your VPS IP address. Review our DNS configuration best practices for A records to configure your nameservers.

Step 1: Connect to Your VPS and Update System Packages

Open your local terminal (macOS/Linux) or PuTTY/PowerShell (Windows) and connect to your server via SSH:

ssh root@YOUR_SERVER_IP

Once connected, update your package repository and upgrade all existing system binaries to the latest secure versions:

sudo apt update && sudo apt upgrade -y

Step 2: Run the Official CyberPanel Automated Installer

Execute the official automated installer script by entering the following command:

sh <(curl https://cyberpanel.net/install.sh || wget -O - https://cyberpanel.net/install.sh)

The installation process typically takes 5 to 10 minutes depending on your server's network speed and CPU cores. Once completed, the terminal will display your access credentials and prompt you to reboot the server (Type y and hit Enter).

Step 3: Accessing the CyberPanel Dashboard

Once your server has rebooted, open your web browser and navigate to your CyberPanel port:

https://YOUR_SERVER_IP:8090

Note: Because your browser connects via raw IP before SSL is installed, you will see a standard browser SSL warning. Click Advanced > Proceed to unsafe to access the login screen. Log in using username admin and your custom password.

Step 4: Create a Website and Issue Let's Encrypt SSL

1. In the left sidebar, navigate to Websites > Create Website.
2. Select the Default package.
3. Enter your Domain Name (e.g., yourdomain.com) and an administrative email address.
4. Select the latest stable PHP version (PHP 8.2 or 8.3).
5. Check the boxes for SSL, DKIM Support, and open_basedir Protection.
6. Click Create Website.

For advanced configurations involving client subdomains or SaaS portals, see our guide on setting up multi-domain wildcard SSL on CyberPanel.

Step 5: Install WordPress with LiteSpeed Cache (LSCache)

1. Go to Websites > List Websites.
2. Find your newly created domain and click Manage.
3. Scroll down to the Application Installer section and click WP + LSCache.
4. Enter your blog title, admin username, secure password, and database prefix.
5. Click Install Now.

CyberPanel will automatically deploy WordPress, configure your database, and integrate the server-level LiteSpeed Cache plugin with optimal presets.

Step 6: Server Performance & Object Cache Optimization

To ensure your server maintains sub-100ms TTFB under heavy loads, implement these two crucial optimization steps:

1. Enable Redis In-Memory Object Caching

In-memory caching stores complex SQL query results in RAM so database queries do not execute repeatedly on every page load. Review our benchmark study on Redis vs Memcached object caching for WordPress for performance data.

# Start and enable the Redis server service
sudo systemctl start redis-server
sudo systemctl enable redis-server

Inside your WordPress Dashboard, go to LiteSpeed Cache > Cache > [6] Object. Toggle Object Cache to ON, select Redis, set Host to 127.0.0.1, and Port to 6379. Click Save Changes.

2. Tune PHP Limits for High-Traffic Sites

Go to CyberPanel Dashboard > PHP > Edit PHP Configs > Basic, select your PHP version, and update these production values:

• memory_limit: 512M
• max_execution_time: 300
• upload_max_filesize: 64M
• post_max_size: 64M

Frequently Asked Questions (FAQs)