CentOS 7 installation guide step by step

7 CentOS

Clearly CentOS is the operating system that usually occupies most of the web serversBecause it is a fairly robust and highly configurable system. This from my part I have verified since in almost all the providers of dedicated servers I have found CentOS as the default system.

That is why I made the decision before purchasing a dedicated server, to know a little more about the CentOS system as well as some tools and functions that have attracted attention.

CentOS 7 Installation Guide

To begin with the system installation, the first step is to download the system, for this we must go to the official website and download system image, in my case I got the minimum version, since I require it for web server.

Now it is essential to know the system requirements, since in my case I only occupy the minimum version I require:

  • 1 ghz processor
  • 64MB RAM
  • 1GB disk space
  • Internet connectivity

Otherwise, if you are going to have to use the system with a graphical environment, the requirements increase even more, so with a dual core processor, 2 GB of RAM and at least 15 GB in disk are on the other side.

Prepare the installation media

Windows: We can burn it ISO with Imgburn, UltraISO, Nero or any other program even without them in Windows 7 and later it gives us the option to right click on the ISO.

Linux: You can use any CD image management tool, especially the one that comes with graphical environments, among them are, Brasero, k3b, and Xfburn.

Linux Bootable USB Pendrive
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If you are going to occupy a USB device you can occupy the following:

Windows: You can use Universal USB Installer or LinuxLive USB Creator, both are easy to use.

Linux: We can also search for imagewriter, which is the same utility as the Windows one, and we create our usb boatable or we can also use the dd command from the terminal.

dd bs = 4M if = / path / to / centos.iso of = / path / to / tu / usb sync

CentOS 7 installation step by step

The first thing will be to boot the system on our computer and In the first screen of the boot we will select the option "Install"

At the end of the system loading, the “Anaconda” installation help wizard will appear. The first step is to define our language, as well as the keyboard layout of our team.

Installation of Centos 7

We click on continue and here Anaconda installer shows us a series of options with which we will configure our installation.

Installation of Centos 7

We pass to define our time zone, in the option of "Date and Time".

Here we have the possibility to also adjust the time and date in case it does not take the data from the network well.

Installation of Centos 7

We give click on the top left and this returns us to the main menu.

Now let's select where CentOS 7 will be installed on your computerIn my case I am running it on a virtual machine so it will occupy the entire disk.

If you want a custom installation you can select the option "Go to configure the partitions".

Installation of Centos 7

Followed in "Network and Computer Name" we are going to activate the network connection and in configuring, we will select in the sale that was opened in the "General" tab the "Connect automatically" box.

genymotion-player-3.0
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We also write the name of our host in the form host.domain.

Installation of Centos 7

Back on the menu under "Software selection" in this option we will find several predefined groups of packages, in my case as I only require the minimum version I leave it as it is, but You can see what each one offers you and select the one that you like the most.

Finally, in Security Policy there are several security profiles, each one implements certain rules to the server, I recommend using the default one the "Standard"

Installation of Centos 7

Once the entire configuration process is finished, we click on the install button, which will finally ask us configure the root password as well as a user for the system.

Installation of Centos 7

Installation of Centos 7

Now we just have to wait for everything selected to be installed and at the end of the installer it will indicate that we must restart the computer to start using CentOS 7.


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  1.   Ricardo said

    Hi, how are you? I'm also dabbling in dedicated servers.
    but I did not have the "delicacy" to learn first,
    I am in a web project,

    For one thing or another, the client decided that he had enough money to rent a dedicated one.
    the real issue, what brings me here is, how do I configure my dedicated server ..

    I know that for cpanel I must use CentOs that I already installed .. now I do not know how to access my server to finish configuring

    I tried with PuTTY and nothing that recognizes the key ..
    So I need help if you can guide me pleasee