How to install the Plesk Cgroups Manager resource controller in Plesk?

Anton Kuznetsov

Updated July 02, 2026 01:40

kb: how-to Plesk for Linux

Applicable to:

Plesk for Linux

Question

How to install the Plesk Cgroups Manager resource controller in Plesk?

Answer

Note: The Plesk Cgroups Manager is not available for CloudLinux servers, because CloudLinux has its own LVE Manager feature that provides such capabilities.

Since Plesk Obsidian 18.0.41, the Cgroups Manager has become a free-to-use feature, and a default addition to the Plesk Web Pro and Web Host editions.

This means that it may already be preinstalled on your Plesk server.

The easiest way to check if it is preinstalled is to go to Plesk > Service Plans > PLAN_NAME and check if you see a RAM, CPU, Disk I/O tab:

Note: Cgroups Manager cannot limit the resources Plesk extensions and custom manually installed services consume. This is true for all Plesk extensions: LiteSpeed is no exception.

Note: Cgroups Manager in a Virtuozzo 7 container can manage RAM and the CPU, but not the disk I/O. Cgroups Manager in a Virtuozzo virtual machine does not have this limitation. To use Cgroups Manager without the limitation, migrate your Plesk from a Virtuozzo 7 container to another OS.

If you need to install the Plesk Cgroups Manager, you may follow these steps:

Via the Plesk GUI

1. Make sure that the operating system meets Plesk CGroups extension requirements

2. Log into Plesk

3. Go to Tools & Settings > Updates > Add/Remove Components > Resource controller (Cgroups).

3. After that start the extension in Tools & Settings > Services Management > Resource Controller (Cgroups).

Via CLI commands

1. Make sure that the operating system meets Plesk CGroups extension requirements

2. Log into your server via SSH as the root user and execute the following command:

# plesk installer --select-release-current --install-component resctrl

3. After that start the extension in Plesk > Tools & Settings > Services Management > Resource Controller (Cgroups)

Additional Information

(Plesk for Linux) Cgroups Manager | Plesk Obsidian documentation

How to Use Cgroups Manager to Increase Website Performance Through Resource Isolation on Linux