How to Install Plesk on a Linux VPS or Dedicated Server
When you want to prepare your Linux VPS or Dedicated Server to host websites using the Plesk control panel. This article explains how to install Plesk.
Plesk control panel is a web hosting control panel, like cPanel, that lets you to manage your web hosting account through a web-based interface. Plesk allows you to manage thousands of virtual hosts(websites) on a single machine. You can use Plesk control panel with Shared, VPS or even Dedicated hosting. In addition to website management, Plesk also offers Email management, FTP, DNS functionality as well as several installable components, extensions such as Wordpress Toolkit and addons like Cloudflare Server Shield, developer pack etc.
Installing Plesk on Linux:
Before you install Plesk, please refer to the software and hardware requirements.
https://docs.plesk.com/release-notes/obsidian/hardware-requirements/
https://docs.plesk.com/release-notes/obsidian/software-requirements/
Plesk installation using one-click installer
1.Log in as root to the server.
-Make sure that wget is installed:
-On Debian Linux: apt-get install wget
-On RHEL and CentOS Linux: yum install wget
2. Run the following command on the server as root:
sh <(curl https://autoinstall.plesk.com/one-click-installer || wget -O - https://autoinstall.plesk.com/one-click-installer)
The installer will download the latest stable Plesk release(Plesk Obsidian 18.0), install it with the default set of components and features.The process should take roughly 30 minutes
3. Post successful installation, access Plesk using the URL: https://server-ip:8443. or https://your-host-name:8447. Access the Plesk web interface, use “root” user and root password
4. Navigate to the License section on the page displayed and select “Proceed with a Paid license:”

5. If you have purchased the Plesk addon from Reseller club, the license key can be obtained from Reseller/Customer Panel>List Orders>VPS order>Admin details.
6. To purchase a plesk license, proceed to the Plesk online store (shop.plesk.com) where you can select and purchase a necessary license key.
Install Plesk Using GUI
1.Download the installer script
wget https://autoinstall.plesk.com/plesk-installer

2. Enable the Installer GUI using the below command:
./plesk-installer --web-interface --all-versions
The all-versions flag allows you to select from a list of versions in GUI.

3. Visit the URL mentioned in the output. Enter the root password

4. Select the desired version of Plesk>Continue


5.Select the installation type from : Recommended, Full and Custom. You can personally select what packages will be installed by enabling Preview components selection

Select the components that you wish to install (example illustrated for PHP 5.6)>Continue

The below progress status will be displayed.

After you see the below prompt, click OK and open a new tab

6. Visit Plesk using https://server-ip:8443. Enter the required details as illustrated

Plesk Post install configuration
You can visit the link below to configure Plesk post installation:
https://docs.plesk.com/en-US/obsidian/deployment-guide/76454/