How to Install Plesk or Onyx on Linux CentOS Easily

If you’re looking to set up a powerful and user-friendly control panel on your Linux VPS or dedicated server, this guide will show you how to install Plesk or Onyx on Linux CentOS step by step. Plesk is one of the most popular web hosting control panels in the world, trusted by developers and hosting providers alike for its simplicity, stability, and powerful features.

Although the installation process is fairly straightforward, this article will walk you through the correct setup to help you avoid common pitfalls and get your server running smoothly.

✅ System Requirements for Installing Plesk on CentOS

Before you begin the installation process, ensure the following:

A fresh installation of CentOS 7 (64-bit), installed on your VPS or dedicated server.
Root access to the server via SSH.
A valid hostname properly configured (recommended).

🔧 Step-by-Step Guide to Install Plesk or Onyx on Linux CentOS

Step 1: Access Your Server via SSH

Log into your CentOS server with root privileges using an SSH client (like PuTTY or your terminal):

bashCopyEditssh root@your-server-ip

Download and initiate the Plesk installer:

bashCopyEditwget http://autoinstall.plesk.com/plesk-installer
chmod +x plesk-installer
./plesk-installer

When prompted, type F and press Enter to proceed.

Step 2: Select Your Plesk Version

You’ll be prompted to choose a version:

Type 1 for Plesk
Type 2 for Plesk Onyx
Then press Enter. Follow this by typing F again to move to the next section.

Step 3: Choose Installation Type

You’ll now see options for installation type:

Type F for Recommended installation (default)
Or 2 to install all components manually (advanced users)

Press F again to continue.

Step 4: Start the Installation Process

Confirm your selections and press F again to begin the installation. The process can take 20–30 minutes, depending on your server speed.

⚠️ If you see a hostname error, don’t quit. Often it’s just a warning. Follow the on-screen instructions if needed.

Step 5: Access the Plesk Panel

Once installation is complete, you’ll receive a success message with a URL to your Plesk control panel.

Copy and paste that URL into your browser. If it doesn’t load:

Temporarily disable your firewall to test
If it works, open the necessary Plesk port permanently in your firewall settings

Step 6: Initial Plesk Setup

Choose “Commercial Web Hosting” as your panel type
Scroll to the bottom and click OK
Set a secure password and fill in admin details (email, name, etc.)
Click OK to save your setup

Step 7: License Activation

Click “Install Key”
Enter your Plesk Activation Code
Alternatively, use a trial license or an existing key

🎉 You’re Done!

Congratulations—you’ve now completed the process to install Plesk or Onyx on Linux CentOS. Your server is ready to host websites, manage email, and handle DNS settings all through a user-friendly interface.