This article will provide you with an information on how to install kernel source on CentOS/RHEL Linux system. Alternatively it will guide you through a simple troubleshootng process in case you have already installed kernel sources/headers and yest still receiving the bellow error message:
ERROR: Unable to find the kernel source tree for the currently running kernel. Please make sure you have installed the kernel
source files for your kernel and that they are properly configured; on Red Hat Linux systems, for example, be sure you have
the 'kernel-source' or 'kernel-devel' RPM installed. If you know the correct kernel source files are installed, you may
specify the kernel source path with the '--kernel-source-path' command line option.
Disk partitions are the basis of storing our data on disks. To be able to handle partitions, in this part of RHCSA exam preparation tutorial we will add an empty disk to our test RHEL 8 system, and create, list, and delete a new partition on it. First we will use the classic MBR (Master Boot Record) setup, then we'll do the same on GPT (GUID Partitioning Table) setup. GPT is a more advanced partitioning technique that allows large partitions, whereas MBR is limited to 2 TB disk space per partition. So if that doesn't seem like a very limiting size at the moment, think of the trend of disk usage, which may be not that much from the end user perspective, but certainly it is from the Linux system administration job perspective.
The objective is to install the GIMP on CentOS 8 / RHEL 8 Linux. GIMP is a raster graphics editor used for image editing, free-form drawing, converting between different image formats and more.
The objective is to install the VLC media player by using both, EPEL and RPM fusion repositories on CentOS 8 / RHEL 8 Linux. VLC media player is a portable cross-platform media player software and streaming media server developed by the VideoLAN project.
Telegram is a cloud-based instant messaging and voice over IP service. In the following tutorial we will perform installation of Telegram messenger on CentOS 8 Linux Desktop
Skype is a telecommunications application to provide video, chat and voice communication between computers, tablets, mobile devices over the Internet connection. In the following tutorial we will perform installation of Skype on CentOS 8 Linux Desktop
VirtualBox is a free and open-source hosted hypervisor for x86 virtualization, developed by Oracle Corporation. This article will discuss the installation procedure of VirtualBox on CentOS 8.
The NVIDIA Driver is a program needed for your NVIDIA Graphics GPU to function with better performance. It communicates between your Linux operating system, in this case CentOS 8, and your hardware, the NVIDIA Graphics GPU. The NVIDIA drivers can be installed by using the bash command after stopping the GUI and disabling the nouveau driver by modifying the GRUB boot menu.
To install Nvidia driver on other Linux distributions, follow our Nvidia Linux Driver guide.
Network interface bonding consists in the aggregation of two or more physical network interfaces, called slaves, under one logical interface called master or bond interface. Depending on the bonding mode, such setup can be useful to achieve fault tolerance and/or load balancing. In this tutorial we will learn what the available bonding modes are and how to create a network bonding on RHEL 8 / CentOS 8.
In this tutorial you will learn:
What is network interface bonding
How to configure network interface bonding on RHEL 8 / CentOS 8
In this tutorial we will discuss an installation of Redis server and client on RHEL 8 / CentOS 8. This tutorial also includes optional steps on how to allow remote connections to Redis sever running on RHEL 8.
In this tutorial you will learn:
How to install Redis server
How to install Redis client
How to enable Redis server to start after system boot
How to allow remote connections to Redis server
How to open firewall ports to allow incoming connections to Redis server
This article covers an installation of WordPress, free and open-source content management system, on RHEL 8 Linux Server. In this instance the installation is based on the well-know LAMP stack comprising the RHEL 8, MariaDB, PHP and Apache webserver.
The mod_ssl module provides SSL v3 and TLS v1.x support for the Apache HTTP Server. This article provides you with a basic step by step mod_ssl configuration on RHEL 8 / CentOS 8 Linux server with httpd Apache webserver.
In this tutorial you will learn:
How to install mod_ssl
How to enable mod_ssl
How to create a self-signed certificate
How to include existing SSL certificate into httpd configuration
The nmap command is an invaluable tool for any system or network administrator. This command is not available on RHEL 8 / CentOS 8 default installation. However, it can be installed with a single dnf command.
In this tutorial you will learn:
How to install Nmap command on RHEL 8 / CentOS 8.
How to to check Nmap version on RHEL 8 / CentOS 8.
