For cPanel & WHM version 68
Overview
When you upgrade to a newer version of cPanel & WHM or install cPanel & WHM on a new server, cPanel & WHM checks your system for compatibility with the version of cPanel & WHM that you wish to install.
Important:
Before you begin a new installation, read our Installation Guide and System Requirements documentation.
Note:
The cPanel & WHM installation and upgrade processes require at least 3 GB of additional disk space for staging purposes.
What is a blocker?
Blockers are conditions that do not allow the cPanel & WHM update process (upcp
) to install a particular version.
Upgrades that include multiple major versions
If you run an update that includes multiple major version upgrades of cPanel & WHM, the cPanel & WHM update process (upcp
) will upgrade your server to each intermediate version. The update process performs compatibility checks for each intermediate version prior to the upgrade to that version.
For example, after a system administrator runs an update on a server that runs cPanel & WHM version 11.50, and the target version is cPanel & WHM version 56, the cPanel & WHM update process (upcp
) performs the following actions:
- The update process detects that the system must first upgrade to cPanel & WHM version 11.52.
- The update process performs compatibility checks for the upgrade to cPanel & WHM version 11.52.
- If the system is compatible, the update process upgrades cPanel & WHM to version 11.52.
- If the system is not compatible, the update process sends a list of the compatibility issues to the system administrator, and the server remains on cPanel & WHM version 11.50.
- After the upgrade to version 11.52 is complete, the update process performs compatibility checks for the upgrade to cPanel & WHM version 54.
- If the system is compatible, the update process upgrades cPanel & WHM to version 54.
- If the system is not compatible, the update process sends a list of the compatibility issues to the system administrator, and the server remains on cPanel & WHM version 11.52.
- After the upgrade to version 54 is complete, the update process performs compatibility checks for the upgrade to cPanel & WHM version 56.
- If the system is compatible, the update process upgrades cPanel & WHM to version 56.
- If the system is not compatible, the update process sends a list of the compatibility issues to the system administrator, and the server remains on cPanel & WHM version 54.
System and software checks
The cPanel & WHM update and installation process performs two types of checks:
- Standard — Standard checks apply to all installations and upgrades.
- Version-specific — Version-specific checks are requirements that are specific to the version of cPanel & WHM to which you begin an installation or upgrade.
If cPanel & WHM encounters a compatibility issue that blocks the installation or upgrade process, the following events happen:
- If you started an upgrade, the system remains at the last known compatible version. If you started a new installation of cPanel & WHM, the system remains in its pre-installation status.
- cPanel & WHM sends a list of the blockers to the system administrator.
- The installation or upgrade process exits.
Warning:
As of cPanel & WHM version 11.34, after you upgrade to a new major version of cPanel & WHM, you cannot downgrade to a previous major version.
Note:
Before you upgrade the version of cPanel & WHM on a server, we strongly recommend that you restore cPanel & WHM's management of all FTP targets on your server. If the FTP RPM's target is set to unmanaged
on a server that you wish to upgrade, you may encounter problems in the cPanel user interface.
For more information on how to restore cPanel & WHM management of all FTP targets on your server, read our How to Set or Unset RPM Management documentation.
Standard checks for all upgrades
When you run an upgrade of cPanel & WHM to any version, the update process performs the following standard checks:
License files
You cannot upgrade cPanel & WHM if any of the following conditions are true:
- The cPanel & WHM update process cannot find a valid cPanel & WHM license file. Without the license file, cPanel & WHM cannot function properly and will block all updates. You must purchase a valid license in order to upgrade, downgrade, or use cPanel & WHM.
- The cPanel & WHM update process cannot read your cPanel & WHM license file. To fix this issue, run the
/usr/local/cpanel/cpkeyclt
script. If the problem persists, contact our support staff. Your server's license is no longer eligible for updates.
If you experience difficulties with your license, contact our customer service department.
Read-only file systems
To ensure that the system can write files to critical directories, the cPanel & WHM update process will fail if the following directories file systems exist in a read-only state:
/etc /var /var/lib/rpm /var/cpanel /usr/local /usr/local/cpanel /usr/local/bin /usr/bin /tmp /var/tmp
RPM database integrity
As of cPanel & WHM version 11.36, the update process verifies the integrity of the RPM database. To verify the integrity of the RPM database, the update process installs and uninstalls a test RPM. The update process attempts to repair the problem, but if it cannot repair the RPM database, the upgrade attempt fails.
cPanel & WHM version-specific installation requirements and upgrade blockers
The following table includes the installation requirements and upgrade blockers for each version of cPanel & WHM:
Important:
If a blocker for the version of cPanel & WHM to which you wish to upgrade is present on your system when you start the cPanel & WHM update process, the update process will fail.
cPanel & WHM version | Upgrade requirements | Upgrade blockers
|
11.30 | None | None |
11.32 |
|
|
11.34 |
|
|
11.36 |
Note: When you upgrade to cPanel & WHM version 11.36, the cPanel & WHM update process may rebuild your Exim configuration. We recommend that you check your Exim configuration after you upgrade to cPanel & WHM version 11.36. |
|
11.38 | None | Interchange is enabled. |
11.40 | None | None |
11.42 | None | None |
11.44 | None | None |
11.46 | None |
|
11.48 | None | None |
11.50 | New installations on CentOS 7 servers require at least 1 GB of RAM, and are only available for 64-bit systems. | None |
11.52 |
| None |
54 | None | None |
56 | None | None |
58 | Only available for 64-bit systems. |
|
60 | SNI support. | Apache (httpd) 2.2.11 or older |
62 | MySQL® version 5.5 and later. | MySQL version 5.1 and earlier. |
64 | None | None. |
66 | None Note: After the upgrade to cPanel & WHM version 66 finishes, WHM users in an active session must refresh their browser windows. Until they do, they may see additional frames within the WHM interface on each page load. | None |
68 |
|
|
Additional blocker information
cPanel & WHM version 11.32
sysinfo.config
cPanel & WHM automatically attempts to run the/usr/local/cpanel/scripts/gensysinfo
script to generate this file during the upgrade procedure. If you encounter this error, perform the following steps:
- Run the
/usr/local/cpanel/scripts/gensysinfo
script. - Examine the
/var/cpanel/sysinfo.config
file. Correct any file permission problems or similar issues that prevent the
root
user's write privileges.Note:
$body
- Run the
cPanel & WHM version 11.36
Disk space on all cPanel version changes and new installs
As of cPanel & WHM version 11.36, to ensure that a partial upgrade does not break your current installation, the cPanel & WHM update process downloads new files to a staging directory inside the /usr/local/cpanel/
directory.
To ensure that there is enough disk space available for the new files, the cPanel update process checks for a minimum of 1.6GB of available disk space in the /usr/local/cpanel/
directory before an upgrade, update, or new installation can begin. After the cPanel & WHM update process downloads the files and completes the compatibility checks, the update process replaces the prior version of each file with the new version.
Note:
cPanel & WHM checks for the amount of available disk space in the /usr/local/cpanel/
directory, but some legacy RPMs (for example, Exim or MySQL) install outside that space. We do not check for sufficient disk space in the /usr/
directory if it is in a different partition from the /usr/local/cpanel/
directory.
cPanel package updates set to Automatic or Inherit
To update to cPanel & WHM version 11.36, the following cPanel package updates must be set to Automatic or Inherit:
- MySQL
- Courier
- Dovecot
- FTP
- NSD
- MYDNS
Exim
- bandmin
- Python™
Notes:
- To set the cPanel package update options to Automatic or Inherit, use WHM's Update Preferences interface (Home >> Server Configuration >> Update Preferences).
- For information on how to modify cPanel & WHM's update configuration file, read our The cPanel & WHM Update Configuration File - /etc/cpupdate.conf documentation.
Exim configuration
You cannot upgrade to cPanel & WHM version 11.36 if you set the EXIMUP
key's value to never
in the /etc/cpupdate.conf
file.
To upgrade from cPanel & WHM version 11.34 and earlier, perform the following steps:
- Run the
touch
/var/cpanel/exim.unmanaged
command. - Run the cPanel & WHM update process.
To upgrade from a cPanel & WHM version 11.36 release prior to 11.36.07, perform the following steps:
Run the following command:
/usr/local/cpanel/scripts/update_local_rpm_versions --edit target_settings.exim unmanaged
- Run the cPanel & WHM update process.
If you set the EXIMUP
key's value to inherit
in the /etc/cpupdate.conf
file, you may receive an error that informs you that the EXIMUP
key's value is set to never
. To resolve this issue, perform the following steps:
- Set the
CPANEL
key's value to11.36
in the/etc/cpupdate.conf
file. - Run the cPanel & WHM update process.
Set the
CPANEL
key's value to your desired support tier (for example,RELEASE
) in the/etc/cpupdate.conf
file.Note:
For more information about support tiers, read our Product Versions and the Release Process documentation.
- Run the cPanel & WHM update process again.
cPanel & WHM version 11.44
Nobody must own the transfer database
If a user owns the whmxfer
database, you must delete the database.
cPanel & WHM version 11.46
Microsoft FrontPage Extensions
You must remove the Microsoft FrontPage Extensions RPM entirely from your system. In cPanel & WHM version 11.44, you can remove FrontPage in WHM's Uninstall FrontPage Extensions interface (Home >> Front Page >> Uninstall FrontPage Extensions).
The cpanel-php53 RPM target
If you have set the cpanel-php53
RPM target to installed
in the rpm.versions system, the system will block an upgrade to cPanel & WHM version 11.46.
To uninstall the cpanel-php53
target, run the following commands:
/scripts/update_local_rpm_versions --del target_settings.cpanel-php53 uninstalled /scripts/check_cpanel_rpms --fix
Note:
For more information, read our How to Set or Unset RPM Management documentation.
cPanel & WHM version 11.50
New installations on CentOS 7 servers
New installations on CentOS 7 servers require a minimum of 1 GB of RAM, and are only available for 64-bit systems.
cPanel & WHM version 11.52
New installations on CloudLinux and RHEL 7, and Amazon Linux servers
- New installations on CloudLinux and RHEL 7 servers require a minimum of 1 GB of RAM, and are only available for 64-bit systems.
- New installations on Amazon Linux are only available for 64-bit systems.
cPanel & WHM version 58
64-bit systems only
cPanel & WHM version 58 is only available for 64-bit systems. You cannot install or upgrade to cPanel & WHM version 58 on a 32-bit system.
CentOS, RHEL, and CloudLinux systems require version 6 or later
If your server runs the CentOS, RHEL, or CloudLinux operating systems, it must run version 6 or later. You cannot install or upgrade to cPanel & WHM version 58 on a server that runs CentOS 5, RHEL 5, or CloudLinux version 5.
The perl514
RPM target is set to installed
or unmanaged
If the perl514
RPM target's state is installed
or unmanaged
in any .versions
file in the /var/cpanel/rpm.versions.d/
directory, the upgrade to cPanel & WHM version 58 will fail.
- To fix this issue in the
/var/cpanel/rpm.versions.d/local.versions
file, use the/scripts/update_local_rpm_versions
script. - To fix this issue in a third-party provided
*.versions
file, update the file in your preferred text editor, and then run the/usr/local/cpanel/scripts/check_cpanel_rpms
script.
cPanel & WHM version 60
SNI Required
cPanel & WHM version 62
MySQL upgrade required
cPanel & WHM version 62 requires that your server runs MySQL version 5.1 or earlier. You must upgrade to at least MySQL version 5.5 before you can upgrade your cPanel & WHM server. You can upgrade your MySQL version in WHM's MySQL or MariaDB Upgrade interface (Home >> Software >> MariaDB/MySQL Upgrade).
cPanel & WHM version 66
After the upgrade to cPanel & WHM version 66 finishes, WHM users in an active session must refresh their browser windows. Until they do, they may see additional frames within the WHM interface on each page load.
cPanel & WHM version 68
LiteSpeed
If LiteSpeed exists on your server, you must upgrade to LiteSpeed version 5.2.1 build 2 or later before you upgrade to cPanel & WHM version 68. Otherwise, websites will not provide the entire certificate chain and browsers may display an SSL error. For more information about how to upgrade LiteSpeed, read LiteSpeed's cPanel Plugin documentation. View the /usr/local/lsws/autoupdate/build
file to verify your LiteSpeed version information.
Note:
If your server does not contain the /usr/local/lsws/
directory, LiteSpeed likely does not exist on your server.
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