How long will cPanel & WHM support my chosen operating system?
Operating System cPanel End of Life Date
CentOS 3.x, RedHat Enterprise Linux 3.x April 30, 2011
CentOS 4.x, RedHat Enterprise Linux 4.x August 31, 2012
CentOS 5.x, RedHat Enterprise Linux 5.x, CloudLinux 5.x September 30, 2014
CentOS 6.x, RedHat Enterprise Linux 6.x April 30, 2018
FreeBSD 7.3 September 30, 2012
FreeBSD 7.4 August 31, 2013
FreeBSD 8.0 May 31, 2011
FreeBSD 8.1 January 31, 2013
FreeBSD 8.2 August 31, 2012
Cpanel supported virtual environments and supported operating systems
Supported Virtual Environments1, 2
KVM
Linux-VServer
Microsoft Server® 2008 Hyper-V3
OpenVZ (stable releases only)
Oracle VM VirtualBox, VirtualBox OSE
Virtuozzo™
VMware® Server, VMware® ESX Server
Xen, XenEnterprise™, XenExpress™, XenServer™
Supported Operating Systems
(i386 and x86-64 ONLY)
CentOS versions 4.x, 5.x
Red Hat® Enterprise Linux® versions 4.x, 5.x
FreeBSD®-RELEASE versions 7.3, 8.0, 8.1
cPanel does not support VPS licenses for the FreeBSD operating system.
cPanel does not support 32-bit Virtual Environments that run on a 64-bit host kernel.
cPanel supports the drivers and configurations provided by Microsoft.
Reference: http://cpanel.net/
Finding MySQL server operating parameters
If you have a MySQL server listening on a given port number, you can use the following command to find out what operating parameters it is using for several important configurable variables, including the base directory and Unix socket file name:
# mysqladmin –host=host_name –port=port_number variables
With the information displayed by that command, you can tell what option values not to use when configuring an additional server.
Kinds of device files in Linux operating systems
There are two general kinds of device files in Unix-like operating systems, known as character special files and block special files. The difference between them lies in how data written to them and read from them is processed by the operating system and hardware.
These together can be called device special files in contrast to named pipes, which are not connected to a device but are not ordinary files either.
Symbol Meaning
- Regular file
d Directory
l Link
c Special file
s Socket
p Named pipe
b Block device
Webmin behaves differently depending on the operating system or Linux distribution that you have installed, and the particular version that you are running.
The correct OS is always automatically detected at installation time or provided by the installer, but it is quite possible that your system may be upgraded during the lifetime of the system.
If this happens, Webmin will not automatically detect the upgrade - you must tell it by following these steps :
- Click on the Operating System and Environment icon on the module’s main page.
- Select your Unix vendor and version from the New operating system list.
- Hit the Save button to have Webmin start using it.
The operating system and version detected at installation time determines the default values for module configurations, as each flavor of Unix uses different locations and formats for the various config files that Webmin manages.
However, changing your OS by following the steps above will not adjust any of these configuration settings. Instead, it will just determine which ones are used for modules installed in future. Usually this is not a problem, as most OS upgrades will not change the locations of files and programs.
However, some modules may need to be manually configured after an upgrade - for example, you may need to change the print system used by the Printer Administration module if the old OS version used LPRng and the new version uses CUPS.
