System Health Status
The System Health Status page provides an overview of the WHMCS installation and system environment status. This can be found under Configuration () > System Health
It will highlight any potential configuration or security related issues that may need your attention.
It also allows you to check if any updates are available for your currently installed WHMCS version, as well as providing quick and easy access to the Changelog and Release Notes for it.
System Cron Tasks
Checks that the system cron has run to completion within the last 24 hours. If this reports a failure, it indicates that either the cron is not running (invalid cron command, file permissions, cron folder path, etc.) or that the cron is failing to complete successfully.
If this check reports a problem, you should begin by checking your cron command configuration and the activity log within WHMCS. Further helpful documentation regarding this check can be found here
For further assistance, please contact our support team.
Cron PHP Version Mismatch
Many server configurations utilize a separate php.ini file in the command line or cron engine than the web server uses. This can sometimes cause issues when different configurations are used in two places.
This warning identifies if automation tasks are being executed under different PHP versions to that being used to visit the admin area via a browser.
Please review this guide for step-by-step instructions to resolve this situation on a stock cPanel server.
Otherwise contact your server admin/hosting provider for assistance.
The result of this check are cached so the warning may not disappear immediately after making the necessary changes to resolve the issue and will only update after the Daily Cron tasks have been executed.
Insecure Permissions Check
Ensures that key files and directories have appropriate permissions. Will alert you to ownership mismatches and/or permission levels that are higher than required for day-to-day operation of the system.
Please see this help guide for more information.
Required PHP Extensions
Checks for any PHP extensions required by WHMCS to operate and will alert you to any that are missing. Should any be reported as missing, you should recompile PHP with the missing extensions included, as detailed here
Recommended PHP Extensions
Checks for the presence of recommended PHP extensions. While not strictly required, this will alert you to any extensions which are not available in your environment that are either required by certain addons/modules or that can help provide improved performance. Detailed in our help guide here we recommend recompiling PHP with the missing extensions listed.
Required PHP Functions
Checks for any PHP functions that are required for WHMCS to operate and will alert you to any that are disabled. If you see any functions reported here, you should check for the presence of them in the php.ini configuration file disable_functions setting and remove them.
PHP Memory Limit
Checks the memory limit setting in your PHP environment and will alert you when it is too low. Will alert you by way of a failure level alert when below the minimum required value and a warning level alert when above the minimum but below the recommended value. For more details on the required memory limit, please refer to the System Requirements page.
Alerts you if error reporting is enabled in your environment. While useful for development and debugging situations, in production, we strongly recommend having error reporting disabled for security reasons.
PHP Error Levels
Alerts you if the error reporting level is set to a very high level. We recommend only logging certain error types, as detailed here
Checks your PHP Version. Will alert you if your current PHP version has reached End of Life and is no longer supported by the PHP Group.
Customising Default Paths
Checks for the existance of custom directory paths. You can customise some of the default directory paths in WHMCS to make it more difficult for malicious users to find them. This check will alert you if any directories that support customisation have not been customised. Please see this helpful documentation about this.
Using Default Templates
Alerts you if any template settings are set to a template of a default name which could be an indication of customisations having been made to a default template. This can result in customisations being lost at the time of the next upgrade. Please see this helpful documentation about this.
Installed cURL Version
Checks the installed curl version and alerts you if your version is known to have any vulnerabilities. More information available here
SSL Support in cURL
Checks to ensure that the curl library present in the PHP environment has SSL support which is required for normal WHMCS operation and many of the modules which come with WHMCS.
PHP Session Support
Alerts you to common issues with the PHP Session configuration in your PHP environment, please see these guides for more information:
- PHP Session Support is Disabled
- PHP Session autostart is Enabled
- The PHP Session save path is not writeable
Secure TLS Support in cURL
Checks to ensure that the curl library present in the PHP environment supports secure TLS versions (TLS v1.1 and v1.2). With many payment vendors phasing out legacy SSL/TLS protocols in accordance with PCI DSS recommendations, this check will help to stay up to date with newer standards.
MySQL Server Configuration Check
We added this check in WHMCS 8.1.
Alerts you to MySQL server configuration settings which may degrade the performance of WHMCS. Including preventing the Daily Automation System Tasks and Auto Updater from completing successfully. A warning is displayed if the following settings are below the suggested minimums:
connect_timeout < 10 seconds wait_timeout < 300 seconds interactive_timeout < 300 seconds max_allowed_packet < 4194304 (or 4MB)
These values are for guidance only, higher limits may be necessary on low-powered or heavily loaded servers.
CloudLinux™ MySQL Extension Check
We added this check in WHMCS 8.2.
The CloudLinux-provided pdo_mysql PHP extension can cause problems with data display in the WHMCS interface. Instead, CloudLinux users should use the nd_pdo_mysql extension.
This check only applies to CloudLinux users.
For help to resolve this problem, see CloudLinux's PHP Selector documentation or contact your server administrator.