How to Update Your System, Supported MySQL/MariaDB Versions, and System User Accounts in cPanel & WHM

1. Overview

This document provides a complete guide to updating your cPanel & WHM server, including system components, services, and software packages. Regular updates ensure security, stability, and compatibility with new features.

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2. Update cPanel & WHM

2.1 Update via WHM

Navigate to:

WHM » Home » cPanel » Upgrade to Latest Version

You can configure your release tier using:

WHM » Server Configuration » Update Preferences

2.2 Update via Command Line

Check your current version:

/usr/local/cpanel/cpanel -V

Run the full update:

/usr/local/cpanel/scripts/upcp

This script also runs:

• update-packages — updates system packages
• sysup — updates required OS dependencies

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3. Update Apache (EasyApache 4)

EasyApache 4 updates Apache, PHP, and related libraries.

Navigate to:

WHM » Software » EasyApache 4

Click Run System Update.

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4. Update Software and Services

4.1 cPAddons

Navigate to:

WHM » cPanel » Manage cPAddons Site Software

4.2 MySQL

Warning: Only MySQL versions provided by cPanel are supported.

Navigate to:

WHM » Database Services » Upgrade Database Version

4.3 Operating System Kernel

Note: You must reboot after updating the kernel.

Methods:

• Via WHM: enable Include kernel packages in System Update
• Via CLI: yum update

4.4 Perl

Warning: Do not manually upgrade or downgrade Perl. cPanel only supports the versions it ships.

Update methods:

• yum update
• /usr/local/cpanel/scripts/upcp
• /usr/local/cpanel/scripts/update_local_rpm_versions

4.5 PHP

To update Apache PHP:

WHM » Software » EasyApache 4

To update system PHP:

/usr/local/cpanel/scripts/upcp

4.6 Packages

Warning: Third‑party repositories may cause conflicts.

Update packages:

/usr/local/cpanel/scripts/upcp

4.7 Ruby Gems

Legacy Ruby was deprecated in version 66.

Update required modules with:

/usr/local/cpanel/scripts/upcp

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5. Supported MySQL Versions

Warning: MySQL 5.7 cannot be installed or selected for new systems.

Operating System	OS Version	Available MySQL Versions
AlmaLinux	8	8.0, 8.4
AlmaLinux	9	8.0, 8.4
AlmaLinux	10	8.4
CloudLinux	8	8.0, 8.4
CloudLinux	9	8.0, 8.4
CloudLinux	10	8.4
Rocky Linux	8	8.0, 8.4
Rocky Linux	9	8.0, 8.4
Ubuntu	22 / 24	8.0, 8.4

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6. Supported MariaDB Versions

Warning: MariaDB versions 10.0–10.3 are deprecated and cannot be installed or upgraded to.

Operating System	OS Version	Available MariaDB Versions
AlmaLinux	8	10.5, 10.6, 10.11, 11.4
AlmaLinux	9	10.5, 10.6, 10.11, 11.4
AlmaLinux	10	10.11, 11.4
CloudLinux	8 / 9	10.5, 10.6, 10.11, 11.4
CloudLinux	10	10.11, 11.4
Rocky Linux	8 / 9	10.5, 10.6, 10.11, 11.4
Ubuntu	22 / 24	10.6, 10.11, 11.4

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7. System User Accounts in cPanel & WHM

These system accounts support internal services and background processes.

Account	Description	OS User	Added by cPanel	Third‑Party
clamav	Manages ClamAV antivirus			✓
cpanel	Manages core cPanel services	✓	✓
cpanelanalytics	Manages cPanel Analytics		✓
cpanelcabcache	Manages SSL CA cache		✓
cpanelconnecttrack	Manages p0f fingerprinting		✓
cpanellogin	Handles cPanel logins		✓
cpaneleximfilter	Manages Exim mail filtering		✓
cpaneleximscanner	Scans outbound mail		✓
cpanelhorde	Manages Horde webmail		✓
cpanelphpmyadmin	Handles phpMyAdmin requests		✓
cpanelphppgadmin	Handles phpPgAdmin requests		✓
cpanelroundcube	Manages Roundcube webmail		✓
cpanelrrdtool	Manages RRDTool		✓
cpanelsolr	Manages Apache Solr		✓
dovecot	Manages Dovecot mail service			✓
nobody	Handles unprivileged script execution	✓
root	Main system administrator account	✓

Conclusion

This guide covers all essential aspects of updating your cPanel & WHM system, supported database versions, and system user accounts. Following these practices ensures a secure, stable, and fully compatible hosting environment.