Author: admin

  • A Brief History of Rocky Linux

    Rocky Linux is one of several variants (also referred to as distributions) of the Linux operating system. It is based on the source code of the Red Hat Enterprise Linux distribution (RHEL), developed by a U.S. company named Red Hat, Inc. Based in Raleigh, North Carolina, the company was founded in the mid-1990s through the…

  • Rocky Linux 9 Essentials – Introduction

    Rocky Linux 9 Essentials is designed to provide detailed information on the installation, use, and administration of the Rocky Linux 9 distribution. For beginners, the book covers topics such as operating system installation, the basics of the GNOME desktop environment, configuring email and web servers, and installing packages and system updates. Additional installation topics, such…

  • Rocky Linux 9 Essentials

  • Mobile Test

    Before the release of iOS 10, the only way to share CloudKit records between users was to store those records in a public database. With the introduction of CloudKit sharing, individual app users can now share private database records with other users. This chapter aims to provide an overview of CloudKit sharing and the classes…

  • RHEL 9 System and Process Monitoring

    An essential part of running and administering an RHEL 9 system involves monitoring the overall system health regarding memory, swap, storage, and processor usage. This includes knowing how to inspect and manage the system and user processes running in the background. This chapter will outline some tools and utilities that can be used to monitor…

  • Adding and Managing RHEL 9 Swap Space

    An essential part of maintaining the performance of a RHEL 9 system involves ensuring that adequate swap space is available comparable to the memory demands placed on the system. Therefore, this chapter provides an overview of swap management on RHEL 9. What is Swap Space? Computer systems have a finite amount of physical memory available…

  • Adding a New Disk to a RHEL 9 Volume Group and Logical Volume

    In the previous chapter, we looked at adding a new disk drive to a RHEL 9 system, creating a partition and file system, and then mounting that file system to access the disk. An alternative to creating fixed partitions and file systems is to use Logical Volume Management (LVM) to create logical disks comprising space…

  • Adding a New Disk Drive to a RHEL 9 System

    One of the first problems users and system administrators encounter is that systems need more disk space to store data. Fortunately, disk space is now one of the cheapest IT commodities. In this and the next chapter, we will look at the steps necessary to configure RHEL 9 to use the space provided by installing…

  • Setting up a RHEL 9 Postfix Email Server

    Along with acting as a web server, email is one of the primary uses of a RHEL 9 system, particularly in business environments. Given the importance and popularity of email, it is surprising to some people to find out how complex the email structure is on a Linux system. This complexity can often be overwhelming…

  • Setting Up a RHEL 9 Web Server

    The Apache web server is among the many packages that make up the RHEL 9 operating system. The scalability and resilience of RHEL 9 make it an ideal platform for hosting even the most heavily trafficked websites. This chapter will explain how to configure a RHEL 9 system using Apache to act as a web…