Book Image

Red Hat Enterprise Linux Troubleshooting Guide

By : Benjamin Cane
Book Image

Red Hat Enterprise Linux Troubleshooting Guide

By: Benjamin Cane

Overview of this book

Red Hat Enterprise Linux is an operating system that allows you to modernize your infrastructure, boost efficiency through virtualization, and finally prepare your data center for an open, hybrid cloud IT architecture. It provides the stability to take on today's challenges and the flexibility to adapt to tomorrow's demands. In this book, you begin with simple troubleshooting best practices and get an overview of the Linux commands used for troubleshooting. The book will cover the troubleshooting methods for web applications and services such as Apache and MySQL. Then, you will learn to identify system performance bottlenecks and troubleshoot network issues; all while learning about vital troubleshooting steps such as understanding the problem statement, establishing a hypothesis, and understanding trial, error, and documentation. Next, the book will show you how to capture and analyze network traffic, use advanced system troubleshooting tools such as strace, tcpdump & dmesg, and discover common issues with system defaults. Finally, the book will take you through a detailed root cause analysis of an unexpected reboot where you will learn to recover a downed system.
Table of Contents (19 chapters)
Red Hat Enterprise Linux Troubleshooting Guide
About the Author
About the Reviewers


In this chapter, you learned that log files, configuration files, and the /proc filesystem are key sources of information during troubleshooting. We also covered the basic use of many fundamental troubleshooting commands.

While reading this chapter, you might have noticed that quite a few commands are also used in day-to-day life for non-troubleshooting purposes. If we look back at the troubleshooting process from Chapter 1, Troubleshooting Best Practices, the first step included information gathering.

While these commands might not explain the issue themselves, they can help gather information about the issue, which leads to a more accurate and quick resolution. Familiarity with these fundamental commands is critical to your success during troubleshooting.

In the next few chapters, we will use these fundamental commands to troubleshoot real-world scenarios. The next chapter focuses on troubleshooting issues with a web-based application.