We have a new documentation site for cPanel & WHM! You can find our new documentation site at docs.cpanel.net.
We will continue to maintain our API documentation on this server.
(WHM >> Home >> Server Configuration >> Update Preferences)
This interface allows you to define how your server performs software updates and upgrades.
cPanel & WHM installs the
at daemon (
atd) during the update process. This daemon validates the system's health after each update. If the update analysis process encounters any errors, the
at daemon emails a report to your contact email address.
This section of the interface allows you to select a release tier. The release tier that you select controls when the system performs an upgrade to a new major version of cPanel & WHM.
Additionally, this interface allows you to specify how your server performs an update within a major version.
If you perform an update that includes multiple major versions of cPanel & WHM, the update process upgrades your server to each intermediate version. The update process performs compatibility checks for each version prior to the upgrade to that version. If the process encounters blockers, it finishes on the most recent release of cPanel & WHM that is compatible with your system.
For more information, read our Upgrade Blockers documentation.
Select a cPanel & WHM tier that matches your requirements. For more information, read ourdocumentation.
After you upgrade to a new major version of cPanel & WHM, you cannot downgrade to a previous major version of cPanel & WHM.
The following table describes each of the cPanel & WHM release tiers:
Long-Term Support (LTS). If you do not wish to upgrade cPanel & WHM, you can select a cPanel & WHM version for as long as cPanel supports it.
The following table lists the LTS dates for the current versions of cPanel & WHM:
For cPanel & WHM version 62 and later, LTS release lifespans extend to March 31st of the year after that version's release date. We will no longer provide LTS for versions that fall outside of this time frame. Only one release each year qualifies for LTS. Other versions will only get updates while they're in the STABLE, RELEASE, or CURRENT tiers. Any cPanel & WHM version that's not present in this table doesn't qualify for LTS.
When cPanel & WHM releases reach End of Life:
|STABLE||This version has received considerable public exposure, testing, and verification.||Published least frequently.|
This version is feature-complete and we tested it thoroughly. It contains all intended features and functionality. New installations default to RELEASE.
|Published more frequently than STABLE.|
|CURRENT||We tested and verified this version, but it may not contain all of the proposed functionality of a release. This tier resembles the "release candidate" tier that other publication schemes use.||Published more frequently than RELEASE.|
We only perform rudimentary testing on this version. We may significantly modify these features in future releases. This version usually lacks official public documentation.
Due to the dynamic nature of EDGE builds, only use EDGE to test for compatibility and functionality in a controlled environment. We do not recommend this tier for production servers.
|Published most frequently (up to several times per week).|
To reduce support ticket influx, automatic upgrades to subsequent major versions of cPanel & WHM do not always occur immediately. In certain scenarios, the system applies a zero-to-four-business-day delay before your automatic upgrade executes.
The system applies a delay if all of the following statements are true:
The system randomly selects the length of your delay. For example, if the system detects a new major version on a Friday, the upgrade does not take place until the following Monday, Tuesday, Wednesday, or Thursday.
When we release a major version, you may perform any of the following actions:
Before an upgrade, ensure that the new version is compatible with any third-party software or customizations to your system. We recommend that you stage the upgrade on a test system before you upgrade your production system.
Use this menu to select how you want cPanel & WHM to update. You can choose from the following options:
/usr/local/cpanel/scripts/upcpscript as the
The maintenance portion of the
/usr/local/cpanel/scripts/upcp script always runs as part of the nightly cron job, regardless of the update settings.
The upgrade to newer versions of cPanel & WHM requires a minimum amount of disk space in order to stage the files necessary. This feature determines where the system places the staging files.
If the selected directory does not have enough disk space for the update, the system automatically selects a different directory for the next attempt. An email will notify you of the new selection, and you will have 24 hours to change the new directory.
To select the staging directory for the updates, perform one of the following actions:
cpanel__HOSTNAME__upcp_stagingsubdirectory at that location, where
hostnameis the name of the actual server.
Select a partition. The path to the selected partition will appear in the Directory text box. The Available Partitions table displays the available disk space on each of your partitions.
This feature determines whether the nightly maintenance tasks will update the RPM packages from your operating system distribution. This is similar to the
/usr/local/cpanel/scripts/upcpscript to update operating system packages.
/usr/local/cpanel/scripts/upcpscript runs. If you select this option, you must run the
/usr/local/cpanel/scripts/rpmup2script to update your operating system packages.
/usr/local/cpanel/scripts/sysupscript automatically updates the EasyApache 4 RPMs. This update occurs regardless of your local configuration. The following settings will not prevent an automatic update:
RPMUPvariable set to
This feature defines how you wish to update the Apache SpamAssassin rules.
/usr/local/cpanel/scripts/upcpscript to update Apache SpamAssassin rules.
/usr/local/cpanel/scripts/upcp) runs, it updates Apache SpamAssassin through the Apache SpamAssassin update script (
Select the Send my settings to all configuration cluster servers checkbox to send your Update Preferences settings to all of the servers that currently exist in your configuration cluster.
The interface only displays the Send my settings to all configuration cluster servers checkbox if you have already added additional servers to the configuration cluster with the Configuration Cluster interface (WHM >> Home >> Clusters >> Configuration Cluster).
If you selected this option, the interface may require several seconds to load when you click Save, and will then display a confirmation message:
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