Book Image

Linux for System Administrators

By : Viorel Rudareanu, Daniil Baturin
Book Image

Linux for System Administrators

By: Viorel Rudareanu, Daniil Baturin

Overview of this book

Linux system administration is an essential aspect of maintaining and managing Linux servers within an organization. The role of a Linux system administrator is pivotal in ensuring the smooth functioning and security of these servers, making it a critical job function for any company that relies on Linux infrastructure. This book is a comprehensive guide designed to help you build a solid foundation in Linux system administration. It takes you from the fundamentals of Linux to more advanced topics, encompassing key areas such as Linux system installation, managing user accounts and filesystems, networking fundamentals, and Linux security techniques. Additionally, the book delves into the automation of applications and infrastructure using Chef, enabling you to streamline and optimize your operations. For both newcomers getting started with Linux and professionals looking to enhance their skills, this book is an invaluable hands-on guide with a structured approach and concise explanations that make it an effective resource for quickly acquiring and reinforcing Linux system administration skills. With the help of this Linux book, you’ll be able to navigate the world of Linux administration confidently to meet the demands of your role.
Table of Contents (21 chapters)
1
Part 1: Linux Basics
7
Part 2: Configuring and Modifying Linux Systems
13
Part 3: Linux as a Part of a Larger System

Formatting and partitioning storage devices

A disk must be formatted before it can be used. Finding the device’s given name is necessary to format the right disk. If you read the last section, you know that drives in Linux distributions follow a predetermined naming convention. Consequently, you should be familiar with the new disk’s device name. You can view information about the storage devices connected to your server using the sudo fdisk -l command, as previously mentioned:

sudo fdisk -l
Figure 10.2 – Listing all disks

Figure 10.2 – Listing all disks

The /dev/sdb device is new to my server, as I just installed it (see Figure 10.2). I’m using it for the exercises in this chapter. Currently, it is not partitioned. At this point, it’s quite clear that the storage device referenced by /dev/sdb in the previous example is brand new. To avoid losing data, we must be careful never to format or repartition the wrong device. Since there are no partitions...