How to Create Custom Jailed Shell Mounts, Disable Disk Space Warnings, Disable Services, and Downgrade Local Licenses in cPanel & WHM

1. Create Custom Jailed Shell Mounts

You can create custom jailed shell mounts to allow jailed users read-only access to additional directories or files on the server.

Important: All custom mounts are read-only for jailshell users.

1.1 Add Directories to a Custom Mount

1. Create the file:
   

   /var/cpanel/jailshell-additional-mounts

2. Add each directory path on a separate line:
   

   /usr/local/test1
   /usr/local/test2
   /usr/local/test3

3. Save the file.

Warnings:

• Use absolute paths only.
• Do not use trailing slashes.
• Do not place multiple entries on the same line.

1.2 Add Files to a Custom Mount

1. Create the file:
   

   /var/cpanel/jailshell-additional-files

2. Add each file path on a separate line:
   

   /usr/local/test1.txt
   /usr/local/test2.txt
   /usr/local/test3.txt

3. Save the file.

1.3 Path Requirements

Correct format:

/usr/local/test1

Incorrect formats:

• test1 — relative path
• test1/ — relative + trailing slash
• /usr/local/test1/ — trailing slash
• Multiple paths on one line

Warning: Incorrect formatting may cause server failures.

1.4 Unmount a Custom Mount

You cannot remove entries from the mount file to unmount them. Use the umount command:

umount /home/virtfs/username/usr/local/example

The system does not automatically unmount custom mounts when the user logs out.

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2. How to Disable Disk Space Warnings

You can disable disk space warnings using two different files depending on your needs.

2.1 Disable Disk Monitoring for Specific Mount Points

Edit the file:

/var/cpanel/chkservd_ignored_mounts

Add one mount point per line:

snap
tempbackup

Rules:

• Only alphanumeric characters and slashes are allowed.
• Each entry must be on its own line.
• You can only ignore entire mount points (e.g., /var), not subdirectories (e.g., /var/tmp).

2.2 Disable All Disk Space Warnings

Create an empty file:

/var/cpanel/disablediskfreecheck

Warning: This allows cPanel to operate even when the server is out of disk space, which may cause system failures.

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3. How to Disable Services

cPanel’s nightly maintenance script automatically restarts services. If this causes issues, you can disable specific services.

Disabled services are stored in:

/var/cpanel/disabled

3.1 Disable a Service

Add one of the following touch files:

File	Description
secureit	Disables the secureit script
securetmp	Disables /tmp security
terminal-colors	Disables color output in WHM Terminal
cloudlinux	Prevents CloudLinux installation
auto-restart-services	Disables automatic service restarts

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4. How to Downgrade a Local License for Testing

You can downgrade your local license for development or testing using:

/var/cpanel/license.cfg

Note: You cannot upgrade a license using this file.

4.1 Steps to Downgrade

1. Log in as root.
2. Edit the file:
   

   /var/cpanel/license.cfg

3. Modify the following values:

Variable	Type	Description	Possible Values	Example
producttype	string	Server profile	databasenode, dnsnode, dnsonly, mailnode, cloudlinux	dnsnode
maxusers	integer	User limit	Any positive integer within license limits	40

After editing, refresh the license:

/usr/local/cpanel/cpkeyclt

Conclusion

This guide covers advanced administrative tasks including custom jailed shell mounts, disabling disk space warnings, disabling services, and downgrading local licenses. These tools give system administrators greater flexibility and control over cPanel & WHM environments.