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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 FREE CHAPTER 2. Troubleshooting Commands and Sources of Useful Information 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 collection

According to the troubleshooting process that we have been following, the next step is to gather as much data as possible around the issue. One of the best sources of information is the person reporting the issue; for this situation, we will ask two basic questions:

  • How can I duplicate the issue and see the error?
  • Has anything changed recently with the WordPress application?

When asked, the developer states that we can see the error simply by going to the blog in the web browser. On the second question, the developer informs us that the database service was recently moved from the webserver to a new dedicated database server. He also mentions that the move happened several days ago and that the application was working until today.

Since the database service was moved several days ago and the application was working up until this morning, it is not likely that this change caused the issue. However, we should not discount this as a possibility.

Duplicating the issue

As discussed...

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