Book Image

Linux Administration Cookbook

By : Adam K. Dean
Book Image

Linux Administration Cookbook

By: Adam K. Dean

Overview of this book

Linux is one of the most widely used operating systems among system administrators,and even modern application and server development is heavily reliant on the Linux platform. The Linux Administration Cookbook is your go-to guide to get started on your Linux journey. It will help you understand what that strange little server is doing in the corner of your office, what the mysterious virtual machine languishing in Azure is crunching through, what that circuit-board-like thing is doing under your office TV, and why the LEDs on it are blinking rapidly. This book will get you started with administering Linux, giving you the knowledge and tools you need to troubleshoot day-to-day problems, ranging from a Raspberry Pi to a server in Azure, while giving you a good understanding of the fundamentals of how GNU/Linux works. Through the course of the book, you’ll install and configure a system, while the author regales you with errors and anecdotes from his vast experience as a data center hardware engineer, systems administrator, and DevOps consultant. By the end of the book, you will have gained practical knowledge of Linux, which will serve as a bedrock for learning Linux administration and aid you in your Linux journey.
Table of Contents (15 chapters)

Adding and configuring network interfaces

In this section, we're going to look at how multiple network interfaces may be configured in a system, and we will discuss how this might be utilized in the real world (such as for backup traffic).

Getting ready

We're going to use our second network, which is new to this chapter. If you're using the Vagrantfile from before, you're already set up with this network. If you're running your own system, add another NIC to each of your virtual machines on the same network.

Use Vagrant to connect to centos1.

$ vagrant ssh centos1

Check that the eth2 interface is available to you. It should look similar to the following:

$ ip link show eth2
4: eth2: <BROADCAST,MULTICAST...