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
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 3. Troubleshooting a Web Application

In the first and second chapters of this book, we covered the troubleshooting process, common locations for information, and useful troubleshooting commands. In this chapter, we will run through an example problem that has been created in order to demonstrate multiple troubleshooting and remediation steps. In particular, we will look at the steps required to troubleshoot issues with web-based applications.

Throughout this chapter, I will go through each step of the troubleshooting process and explain the reasoning behind each step. While the problem that this chapter covers may not be an extremely common issue, it is important to look at the process and tools used. The process and tools used in this chapter can be applied to most web application issues.