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Linux Troubleshooting Techniques and Tools

Linux Troubleshooting Techniques and Tools

in Red Hat
(0 Ratings)
Created by QuantaCrest
3/189 Students

About this course

Course Overview

Troubleshooting is both an art and a science. An instinct and a technique. In Linux Troubleshooting Techniques and Tools (RH142), system administrators will learn techniques for troubleshooting a Linux system and how to use the troubleshooting tools available on Red Hat Enterprise Linux. This course is a four-day, heavily lab-oriented class designed to help learn or improve troubleshooting skills. Students will gain troubleshooting experience by debugging live systems.

Target Audience

  • Linux system administrators who understand how to install and configure a Red Hat Enterprise Linux system and who wish to deepen their understanding of troubleshooting on Linux.

Course Objectives

  • Introduction to troubleshooting techniques
  • Troubleshooting boot issues: working with advanced GRUB features, rescue and GRUB CDs, advanced ext2/ ext3 filesystem repair, rescuing RAID and LVM volumes
  • Troubleshooting hardware: listing, testing, and analyzing devices
  • Troubleshooting applications: diagnosing performance problems and investigating application/OS interactions
  • Troubleshooting the network: configuration, testing, and diagnosing problems with basic and advanced configurations
  • Security: working effectively with (and not against) security tools, including SELinux, SSL, and authentication
  • Making the most of Red Hat support resources

Course Content

Unit 1 - Troubleshooting Techniques

An introduction to troubleshooting methods, best practices, and tools.

Unit 2 - Common Troubleshooting Tools

Analysing log files; monitoring file changes; Rebuilding the RPM database.

Unit 3 - Troubleshooting Boot Issues

Working with advanced GRUB features; rescue and GRUB CDs; advanced ext2/ext3 filesystem repair; rescuing RAID and LVM volumes.

Unit 4 - Revision control

An example to track configuration changes with a revision control system.

Unit 5 - Hardware

Preempting hardware failures (looking for the signs); protecting against hardware failures; redundant configurations; tools to help identify hardware failures and intermittent problems.

Unit 6 - Applications

An overview of tools and techniques for troubleshooting applications. Some common application problems and how to solve them.

Unit 7 - Network

Manual configuration of network cards, troubleshooting advanced setups (bonded interfaces, virtual interfaces); connectivity issues; network diagnostic tools.

Unit 8 - Security

Working effectively with (and not against) security tools, including SELinux, SSL, and authentication.

Unit 9 - Red Hat Resources and Reporting Problems

Support options; Knowledgebase; certified training; initiating support calls; TAM support; developer support; bugzillas; support workflow; diagnostic and information-gathering tools

Course Prerequisites

  • Red Hat System Administration I and II or RHCSA Rapid Track Course
  • RHCSA certification holder or equivalent experience
  • System administration knowledge under Red Hat Enterprise Linux.
    This knowledge includes: installation, service management (using service and chkconfig, for example), basic system monitoring (using ps and top, and perhaps meminfo and the /proc filesystem), filesystem management (using fdisk and mkfs), and basic troubleshooting (including managing log files and perhaps the use of hardware probing tools such as ethtool and lspci).

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$2,500
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