Red Hat Linux Troubleshooting (RH242) - Techniques for troubleshooting a Linux system

מק"ט: #8875 | משך קורס: 32 שעות אק'

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.

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מטרות הקורס

  • 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

קהל היעד

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

תנאי קדם

  • 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)

תנאי קדם

Being Proactive, Part 1

Proactively monitor log files, hardware, file systems, and system and network performance


Being Proactive, Part 2

Several approaches to managing configuration changes and developing a recovery plan


Basic Troubleshooting Techniques and Procedures

An introduction to troubleshooting methods, best practices, and tools


Booting Issues

Use recovery runlevels and rescue mode; work with advanced GRUB features


Hardware Issues

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


File System Issues

Locate unauthorized changes; audit software; file system tuning and repair; file recovery


Disk Issues

Rescuing LVM volumes; maintenance of LUKS-encrypted volumes


Networking Issues

Manual configuration of network cards; connectivity issues; network diagnostic tools; monitor packets; tune kernel parameters; troubleshoot SAN communication


Application Issues

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


Security Issues

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


Red Hat Resources

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


Note:Course outline is subject to change with technology advances and as the nature of the underlying job evolves. For questions or confirmation on a specific objective or topic, please contact a training specialist.

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