How to Install KernelCare
Last modified: April 24, 2020
This document describes how to install the KernelCare software via the command line. KernelCare automatically updates your system’s Linux® kernel without the need for a reboot.
To automatically install KernelCare through WHM, read the Purchase from WHM section of our How to Purchase a KernelCare License documentation.
- You must run these commands as the
- To install and run KernelCare, you must disable Secure Boot if you enabled Secure Boot previously.
Check for compatible kernels
Before you purchase and install KernelCare, make certain that your system possesses a compatible kernel. To do this, read the KernelCare documentation.
Choose and run your preferred command
You can choose between two different SSH commands to begin the KernelCare installation process. To begin the KernelCare installation process, run one of the following commands:
Register the license key
You can skip this step if you purchased a KernelCare license from the cPanel Store. KernelCare licenses use IP-based licensing, which you don’t need to register.
The KernelCare license key deploys and registers your server. To register your key, run the following command:
/usr/bin/kcarectl --register $kc_key
Check for applied patches
After you register KernelCare, you will need to check for applied patches. This ensures that the automated kernel security updates ran properly on your server. To check for applied patches, run the following command:
Manually check for patch updates
KernelCare will automatically check for new patches every four hours. If you want to check for new patches yourself, run the following command: