RHEL/CentOS 7 (Red Hat Enterprise Linux) Installation steps
This article will explain you about the Installation of RHEL/CentOS 7. and It is mainly designed for modern data centers and cloud platforms and Big data.
RHEL/CentOS 7 Feature and Capabilities
1. Supports only x86_64 architectures and supports Maximum 288 Logical CPUs
2. Intel VT-x or AMD-V* and above
3. Maximum Memory limit up to 12TB
4. XFS Maximum File system size is 500TB
5. Kernel version is 3.10
6. Desktop GUI version is Gnome 3.8
7. Graphics supporting X.org 7.7
Note: These are the specifications provided by Red Hat. For more info visit: https://access.redhat.com/articles/rhel-limits
Before beginning the installation process, you must have to be download any of the RHEL/CentOS 7 DVD Binary ISO Image for installation
Following URL link for Download the CentOS 7 DVD ISO image file:
After the download of the latest version of Red Hat or CentOS DVD Binary ISO Image, burn the process in DVD or USB media.
I’ll recommend you to use the open source tool to burn the DVD/USB. Click Here to download the tool – Rufus
After powering on the system, enter into BIOS settings and set DVD/USB drive as a first boot device, then make sure VT-x (Virtual Technology) is enabled then save the changes and restart the system to boot from DVD then select RHEL/CentOS 7 prompt and Install then Red Hat Enterprise Linux 7.x/CentOS 7.x
After the installation process clicks on Date and Time, choose your system location and click on done.
Highlight date& time image below
In this step, we have so many options to change the Languages are language system support and Keyboard language. If you want to use both Languages click on both or you can add other languages but the server recommended language is English.
Other than DVD/Media sources If we want to use another one click on installation source and add your additional repositories or specify the network location using HTTP, HTTPS, FTP or any protocols then click on done. If there is no other sources then use by default option Auto detected Installation Media.
Highlight installation source image below
After installation, source clicks on software selection and choose the base installation environment from the given n drop-down list. In this, you can install only the packages that we need after the installation. Then choose the Server -Desktop or Minimal Install with Compatibility Add-ons, then click on Done to apply the changes.
Here the important step is to divide the partitions on your system. Click on Installation Destination and select the LVM as partition scheme for an (Optional) – better management, then Click the here option to create them automatically.
Highlight Installation Destination image below
After the default system partition, you can edit in many ways that suits to the system. In base scheme for a server you should use dedicated partitions such as:
/boot – 500 MB – non-LVM
/ – min 20 GB – LVM
/home – LVM
/var – min 20 GB – LVM
After editing those partitions click on Update Setting button, then click on Done and then accept the changes that indicate you to apply for new configurations.
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