The cpanel-onboot System Script
Valid for versions 122 through the latest version
Version:
122
Last modified: 2026 April 20
Overview
When the system boots, it runs the cpanel-onboot script from a systemd service. This systemd service runs all scripts in the /var/cpanel/on_boot directory. It allows a system administrator to easily manage scripts that they wish to run after the system starts.
Note:
The system uses the cpanel-onboot script as a service. Users do not run this script directly.
The on_boot directory
System administrators should save scripts that they wish to run when the system boots in the /var/cpanel/on_boot directory.
If the directory does not already exist, run the following command as the root user to create it:
mkdir -p /var/cpanel/on_boot