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Installing cPanel/WHM

Article ID: 1 Created on: 20/12/2008 12:00 am Modified on: 21/01/2010 11:58 pm

cPanel and WHM can only be installed on a blank server with a fresh operating system install. No data should be on the server that you wish to keep. This includes, but is not limited to, web pages, configuration files, user accounts and scripts. The installer will make many changes to your system including the downloading and configuring of needed packages for you. Because of the considerable amount of changes that cPanel will make to the system, the suggested method of uninstalling the cPanel and WHM software is to reformat the server.

A fresh install with minimal installation options is recommended. Development tool libraries (gcc, C, etc) and wget are required.

cPanel and WHM will install Apache, MySQL, exim, PHP, etc. You will not need to install any of these services beforehand.
You should ensure your package management (or ports) system is properly configured (yum, apt-get, up2date, ports).
You will need to make sure that /etc/resolv.conf contains valid name-servers that allow you to resolve domains properly.

Example > If you would like to test this, try: dig domain.com @serverip

SYNTAX: Replace "domain.com" with the name of a well known domain and replace "serverip" with the IP address of a name-server in "/etc/resolv.conf"

The hostname of this server should be a fully qualified domain name that will not be used elsewhere on the server. You should never set your hostname to a name that is already used (www, ftp, mail, etc) or to the name of an account on the server (www.domain.com). This means that your hostname should never be a domain name and especially not the name of your domain!!

The Following Partitioning Scheme Is Recommended
Item	Setting
/boot	100 MB (Megabytes)
/usr	8192+ MB (8192MB if you have a 80GB drive, 10240MB for a 100GB drive, 32768MB for 320GB drive, etc.)
/var	10240+ MB
/tmp	1024 MB
/	5120 MB
swap	2x memory size
/home	Grow to fill disk

The "/tmp" directory is a special directory that is required to be writeable by all users and processes on the system. In general, directories that are writable by all users and processes are a cause for security concern, however this directory is a special case. To minimize any security impact as a result of having an unsecured directory will verify and potentially remount the partition with the "no exec" option. Additionally, the installer will ensure that the sticky bit is set on the directory and that the other permissions are correct. If "/tmp" is not mounted on a separate partition, the installer will create a file system disk image of 512 MB and mount "/tmp" on the newly created disk image with the "no exec" directive. Under most circumstances, 512 MB is sufficient for the "/tmp" partition; however, your system may require additional space. It is therefore recommended that you include a separate partition for the "/tmp" mount point (sized according to your size specification) prior to installing cPanel.

To Install cPanel and WHM

Make sure you are logged in as root and perform the following commands:

# cd /home
# wget http://layer1.cpanel.net/latest
# sh latest

The installer has now started, and can take between 30 and 60 minutes depending on your machine. If you are asked any questions press the Enterq if there is no default. After the installation has completed, you will need to setup WebHost Manager. key or

Author: cPanel

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Installing cPanel/WHM

To Install cPanel and WHM

Author: cPanel

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