“RAM, CPU, Disk I/O” tab is missing in Service Plan settings

Symptoms

• The RAM, CPU, Disk I/O tab is missing in Service Plans > <Service plan name>.

• The Resource Controller (Cgroups) is missing in Tools & Settings > Services Management.

• The Plesk Cgroups Manager extension was installed.

• The Resource Controller (Cgroups) component is marked as installed in Tools & Settings > Updates and Upgrades > Resource Controller (Cgroups).

• The Resource Controller (Cgroups) has the Off value on the Tools & Settings > License Management page.

Cause

Missing license for Plesk Cgroups Manager Extension.

Resolution

Plesk Cgroups Manager is a paid extension, and license key for it should be purchased separately or as a part of the Hosting Pack.

Warning: check the requirements for Cgroups Manager before purchasing the license.