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Red Hat Enterprise Linux Troubleshooting Guide

You're reading from   Red Hat Enterprise Linux Troubleshooting Guide Identify, capture and resolve common issues faced by Red Hat Enterprise Linux administrators using best practices and advanced troubleshooting techniques

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Product type Paperback
Published in Oct 2015
Publisher
ISBN-13 9781785283550
Length 458 pages
Edition 1st Edition
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Author (1):
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Benjamin Cane Benjamin Cane
Author Profile Icon Benjamin Cane
Benjamin Cane
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Table of Contents (14) Chapters Close

Preface 1. Troubleshooting Best Practices 2. Troubleshooting Commands and Sources of Useful Information FREE CHAPTER 3. Troubleshooting a Web Application 4. Troubleshooting Performance Issues 5. Network Troubleshooting 6. Diagnosing and Correcting Firewall Issues 7. Filesystem Errors and Recovery 8. Hardware Troubleshooting 9. Using System Tools to Troubleshoot Applications 10. Understanding Linux User and Kernel Limits 11. Recovering from Common Failures 12. Root Cause Analysis of an Unexpected Reboot Index

Data gathering

If we look back at Chapter 1, Troubleshooting Best Practices, the first step in the troubleshooting process is to understand the problem statement. In this section, we are going to explore how the problem was reported and will try to collect any data that we can to find the root cause of the issue.

For this example, we were notified of the issue via a phone call. This is actually lucky as we have an end user on the phone and can ask questions to get more information from him/her.

Before asking the person reporting the issue for more information, let's first take a look at what was already answered. All of a sudden, our blog is showing an installation page and not our posts!

At first, you may feel that this problem statement is vague; this is because it is vague. However, there is still quite a bit of useful information in this single sentence. If we dissect the reported issue, we can gain a better understanding of the problem.

  • "Our blog is showing an installation page...
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