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RH242 - Red Hat Linux Troubleshooting

Overview

Duration: 4 days

Red Hat Linux Troubleshooting - is both an art and a science. An instinct and a technique. In Red Hat® Linux® Troubleshooting (RH242), 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 4-day, heavily lab-oriented class designed to help the student learn or improve troubleshooting skills. Students will gain troubleshooting experience by debugging live, virtualized systems.

Objectives

  • Introduction to troubleshooting techniques, including being prepared
  • Troubleshooting hardware, including listing, testing, and analyzing devices
  • Troubleshooting applications, including diagnosing performance problems and investigating application and OS interactions
  • Troubleshooting disks and file systems, including LVM, LUKS, ext3/4, and unauthorized changes
  • Troubleshooting the network, including configuring, testing, and diagnosing problems with basic and advanced configurations
  • Security, including working effectively with (and not against) security tools like SELinux, authentication, and firewall
  • Making the most of Red Hat support resources

Content

1. Troubleshooting Techniques
  • Troubleshooting methods
  • Best practices
  • Tools
2. Troubleshooting Boot Issues
  • Working with advanced GRUB features
  • Rescue and GRUB CDs
  • Advanced ext2/ext3 filesystem repair
  • Rescuing RAID and LVM volumes
3. Local Configuration
  • Tools to identify configuration problems
4. Hardware
  • Preempting hardware failures (looking for the signs)
  • Protecting against hardware failures
  • Redundant configurations
  • Tools to help identify hardware failures and intermittent problems
5. Applications
  • Tools and techniques for troubleshooting applications
  • Common application problems and how to solve them
6. Network
  • Manual configuration of network cards
  • Troubleshooting advanced setups (bonded interfaces, virtual interfaces)
  • Connectivity issues
  • Network diagnostic tools
7. Security
  • Working effectively with (and not against) security tools, including SELinux, SSL, and authentication
8. 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

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

Prerequisites

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

Certification

This course is not associated with any Certification.

Schedule

Show Schedule for: