System Administration

 

Articles marked as System Administration are usually geared towards Linux security, networking, server configuration, virtualization, and similar topics.

 

At Linux Nightly, we’re always auditing our Linux servers and desktops, and looking for ways to improve performance and security. In these guides, we share some of the helpful things we’ve learned.

How to Install VirtualBox Guest Additions on CentOS

VirtualBox Guest Additions will help you get the most out of your CentOS virtual machine. It gives you automatic resolution scaling, a shared clipboard between the host and VM, and drag and drop ability. The step by step instructions below will explain how to install VirtualBox Guest Additions on CentOS Linux. 1. First, we’ll use …

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How to Disable (or Enable) SELinux in AlmaLinux

Just like RHEL and the rest of its derivatives, AlmaLinux comes with SELinux (Security Enhanced Linux) installed and enabled by default. In this guide, we’ll see how to disable SELinux temporarily or permanently. You’ll also learn how to re-enable it later in case you need to turn it back on. It’s not usually recommended to …

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How to Install VirtualBox Guest Additions on openSUSE

VirtualBox Guest Additions will help you get the most out of your openSUSE virtual machine. It gives you automatic resolution scaling, a shared clipboard between the host and VM, and drag and drop ability. The step by step instructions below will explain how to install VirtualBox Guest Additions on openSUSE Linux. 1. First, we’ll use …

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Install WordPress With Apache, MySQL, and SSL on Ubuntu 20.04

This guide shows the step by step instructions to install WordPress on Ubuntu 20.04 with Apache HTTP server, MySQL database, and an SSL certificate from Let’s Encrypt. 1. Get started by installing all of the required packages on your Ubuntu 20.04 system. This will include Apache, PHP, MySQL, Let’s Encrypt certification bot, and all of …

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How to Install VirtualBox Guest Additions on AlmaLinux

After you’ve installed AlmaLinux, VirtualBox Guest Additions will help you get the most out of your AlmaLinux virtual machine. It gives you automatic resolution scaling, a shared clipboard between the host and VM, and drag and drop ability. The step by step instructions below will explain how to install VirtualBox Guest Additions on AlmaLinux. 1. …

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[Solved] ERROR 1698 (28000) Access denied for user ‘root’@’localhost’

Are you getting the following error when trying to login to the MySQL root on an Ubuntu system or other Linux distribution? We’ll show you how to clear it up in a matter of seconds. ERROR 1698 (28000): Access denied for user ‘root’@’localhost’ This error is caused by the auth_socket plugin. The simplest solution is …

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