RPM Package Manager: Originally Redhat Package Manager, abbreviated RPM is a useful package manager using which you can install, query, verify, update and remove/erase software packages installed on your dedicated server. RPM packages come in two varieties: Binary packages and Source packages.

Binary package is used to encapsulate software to be installed where as Source packages contains the source code and other necessary data required to produce binary packages.

RPM was intended primarily for Linux distributions such as Redhat, Suse, CentOS, Fedora and many other Linux distributions.

Following are most common commands used with RPM :

rpm -ivh {rpm-file}
:-  Install the package.

rpm -Uvh {rpm-file}
:-  Upgrade package.

rpm -ev {package}
:-  Erase/remove/ an installed package.

rpm -ev –nodeps {package}
:-   Erase/remove/ an installed package without checking for dependencies.

rpm –qa
: –  Display list all installed packages.

rpm -qi {package}
:-  Display installed information along with package version and short description.

rpm -qf {/path/to/file}
:- Find out what package a file belongs to i.e. find what package owns the file.

rpm -qc {pacakge-name}
:-  Display list of configuration file(s) for a package.

rpm -qcf {/path/to/file}
:-  Display list of configuration files for a command.

rpm -qa –last
:-  Display list of all recently installed RPMs.

rpm -qR {package}
:-  Find out what dependencies a rpm file have.

The Cloud Hosting is one of the developing technology that is now starting to take its first steps in the international market. This technology basically consists of the sharing of multiple servers to allocate your web space, ie conducting safety management, load distribution and resources, your website will have access to processing power of multiple servers that will be distributed in real time .

This new type of web hosting that brings new benefits to its users. Scalability and cost reduction are the major advantages. As the technology is highly scalable, the expansion of  website can be made without being limited to the resources of a server. Just think of the transfer process from a shared server to dedicated servers, or a busy server that pour down your server. With cloud hosting or accommodation in cloud, it is easy to prevent these disorders.

Accommodation in cloud charge their customers for the amount of processing used, as we pay the electricity or water. We pay for what we use. Times were when they already had to pay for high for hardware resources to avoid the “crash” the server at peak use. Now with the “cloud hosting pay for what you use“.

The Advantages of cloud hosting are, You can :

• Access your data at any point of time – not just while you are in the office.
• A physical storage center is not at all required.
• Lots of them have a pay for the structure, with cloud website hosting you only need to pay when the service is used.
• Simply scalable so companies can make changes in storage base as per their needs.

The following are commonly used port numbers in cPanel, to login to your cPanel. You’ll have to use those ports in the form of http://www.domain.com:2082/

Port 2082 -> cPanel default port
Port 2083 -> cPanel over SSL
Port2086 -> cPanel Webhost Manager (default)
Port 2087 -> cPanel  Webhost Manager (with https)
Port 2095 -> cPanel Webmail
Port 2096 -> cPanel secure webmail over SSL

if you are using a firewall, make sure you unblock those ports in TCP. You can also add the following Ports;

Port 80 > Apache HTTP web server
Port 21 > FTP
Port 22 > SSH (you will get lot of ssh attacks if you leave it open. change the port to something else)
Port 25 > SMTP (outgoing email)
Port 110 > POP3 (incoming email)
Port 53 > DNS server (if you run DNS server)