CentOS/RHEL 8

How to Enable Debug Mode for Chronyd Service in CentOS/RHEL 8
What is Chronyd Service In CentOS/RHEL 7 and 8, the operating system's time is set on every boot based on the hardware clock, which is a small-battery...
How to Change the default kernel (boot from old kernel) in CentOS/RHEL 8
In case you have multiple kernels installed in the system, you can boot from a specific kernel in case of a downgrade or any other requirement. Let's ...
How to list or install only security updates with dnf in CentOS/RHEL 8
Question: Is it possible to limit dnf so that it lists or installs only security updates? How to patch the system only with security errata? This post...
How to Disable user list on GNOME login screen in CentOS/RHEL 8
Question: How to disable the user list being shown when logging into a CentOS/RHEL 8 system? There are 2 ways to disable the user list being shown on...
How to Reset Root Password in CentOS/RHEL 8
Starting from CentOS/RHEL 7, resetting of root password has slightly changed than its earlier versions. Let see in this post how we can recover a lost...
Failed to Download Metadata for Repo 'repo_name'
The Problem All the dnf commands fail with the following error: # dnf repolist Oracle Linux 8 BaseOS Latest (x86_64) 0.0 B/s | 0 B 00:00 Failed to do...
How to change the interface name in CentOS/RHEL 8 using prefixdevname
This post will help to change the network interface name using prefixdevname utility in CentOS/RHEL 8 systems. Installation and configuration 1. Insta...
How To Create/Remove and Mount a Stratis Filesystem in CentOS/RHEL 8
“stratis” is the new volume manager introduced in the CentOS/RHEL 8 release. This post outlines steps to create or remove a new stratis filesystem in ...
How to Configure Early-kdump Support Feature in CentOS/RHEL 8
What is early kdump support? In previous versions of CentOS/RHEL (5/6/7), the kdump service would start very late in the boot sequence. So early crash...