CentOS 7.0 Installation

We download the ISO from the official CentOS website and start the installation of our server.

In this section, we will proceed by clicking “Install CentOS 7” and then the following screen asking us to select the installation language will appear.

I continue by selecting English to stay true to the original language of the operating system, but you can also install it in Turkish, though we do not recommend it. After selecting the language and continuing, the following unified screen designed to display all installation operations on a single screen will appear.

On this main screen shown above, basic Network settings, Keyboard language selection, Date and Time adjustments, and “Installation Destination” definitions determining which disk the installation will be performed on are made. First, to select the keyboard language as Turkish, let us click on the “Keyboard” tab in the left corner; this will bring up the following screen.

On this screen, we click the “+” icon in the bottom right corner to open the list of supported keyboard languages, find Turkish, and click “Add” to add it. This way, both English and Turkish will be added as keyboard layouts, but since we want to use Turkish as the default, we select Turkish and move it to the top of the list using the up arrow button below.

Then we click “Done” on this screen and return to the main screen. After defining the keyboard language, the next step is to perform network and system name definitions from the “Network & Hostname” tab located at the bottom right of the main screen. We enter the relevant section for this.

The network interfaces on our system are displayed on this screen shown above. One of the changes in version 7 of RHEL and therefore CentOS is that network interface names use a different naming schema from the old familiar ethX format; therefore, the only network interface on my system appears as eno167xxxx. Now we select this interface and click the button in the “Off” position in the upper right corner once to turn it “On” and enable the network interface. At this point, since there is a DHCP server on my network, I can obtain an IP without needing to configure a static IP; however, if you do not have DHCP, you can click the Configure button in the lower left corner of the relevant screen, go to the “IPv4 Settings” section in the top menu of the opened screen, make IP configurations similar to the following, and exit this screen by clicking save.

![cent7]https://kova1.ni.net.tr/warden/bilgi-bankasi/md0S7cDkTTV0AYpKeAL2TnFrNgipEw6ASRRQmzT1.png)

Finally, on the network configuration screen, we also define the hostname in the section located in the lower left corner, complete the operation with the “Done” button at the top, and return to the main installation screen.

Now, what remains to complete the installation is the Date and Time setting and the definitions specifying which disk the installation will be performed on. First, let us enter the “Date & Time” section to configure the time settings.
The definitions on this screen shown above are to select your city/region from the map and to turn the “Network Time” feature in the upper right corner from “Off” to “On”. Let us do these operations and then, as always, click “Done” to return to the previous screen.
Now, finally, we will complete the disk configuration. For this, we enter the “Installation Destination” section;
On this screen, of which you can see an example on the side, the disk or disks in your system will be listed and you will be asked to determine which one you want to install on. Since there is only one disk in my system, I select it by clicking on it once. After selecting the disk, we determine how disk partitioning will be done. You have two options here: you can go with the default “Automatically configure partitioning” option to let CentOS do the disk partitioning automatically, or you can say “I will configure partitioning” to manually determine the disk layout according to your needs. Automatic partitioning will make a default definition in LVM structure using the entire disk and will be quite sufficient if you do not have specific requirements. For this reason, we select automatic configuration and click “Done”.

After this final step, all initial configuration operations required for the installation process are completed and finally we start the installation with the “Begin Installation” button located at the bottom right of the main installation screen;

With the start of the installation, the following screen will appear, showing the installation progress on one hand while listing the configuration sections where you can set your root password and add a user to the system on the other;

At this stage, it is mandatory to set the root password for the installation to be completed. Therefore, we enter the relevant section and define the password for the root user;

After clicking “Done” on the above screen, the “Finish configuration” button will appear on the main screen you return to. We click the Finish configuration button and the final operations related to the installation such as creating initramfs and editing the bootloader are performed.

After the relevant process is completed, we complete the installation by rebooting our system.

Abdullah Altunbaş

Content Writer

Netinternet Bilişim Teknolojileri A.Ş.'de teknik konularda liderlik yapıyorum. 15 yıldır bu alanda çalışıyorum ve özellikle sistem yönetimi, ağ teknolojileri ve yazılım geliştirme konularına odaklanıyorum.