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

Troubleshooting commands

This section will cover frequently used troubleshooting commands that can be used to gather information from the system or a running service. While it is not feasible to cover every possible command, the commands used do cover fundamental troubleshooting steps for Linux systems.

Command-line basics

The troubleshooting steps used within this book are primarily command-line based. While it is possible to perform many of these things from a graphical desktop environment, the more advanced items are command-line specific. As such, this book assumes that the reader has at least a basic understanding of Linux. To be more specific, this book assumes that the reader has logged into a server via SSH and is familiar with basic commands such as cd, cp, mv, rm, and ls.

For those who might not have much familiarity, I wanted to quickly cover some basic command-line usage that will be required knowledge for this book.

Command flags

Many readers are probably familiar with the following...