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)

Centralizing logging

You don't want to log on to each and every box in your estate to check logs, you just don't. In this age of the cloud and automatically provisioned infrastructure, it's a lot more faff than it's worth, and it's a great case for centralizing your logs in one (redundant) location.

Being data, our logs can be manipulated and moved relatively easily. Both rsyslog and journald have the capability to do this, and, in this section, we're going to be streaming our logs around the place, showcasing how useful this can be.

Everything we cover here will be natively possible in the respective programs; this is different to some of the centralized logging solutions that are provided by software such as the Elastic Stack.

For the purpose of these examples, we're not utilizing TLS, meaning logs will be streamed in a plain format. I would...