Red Hat Linux Troubleshooting Training (RH242)

Red Hat Linux Troubleshooting Training

Course Delivery

This Course is available in the following format:

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Course Overview:

Red Hat Linux Troubleshooting Training (RH242) – Hands-on

In Red Hat Linux Troubleshooting Training (RH242) course, system administrators will learn techniques for troubleshooting a Linux system and how to use the troubleshooting tools available on Red Hat Enterprise Linux 6.

This Red Hat Linux Troubleshooting Training (RH242) course relates to Red Hat Enterprise Linux 6. It is a heavily lab-oriented class designed to help the student learn or improve troubleshooting skills. Students will gain troubleshooting experience by debugging live, virtualized systems.

Audience / Target Group:

The target audience for this Red Hat Linux Troubleshooting Training course:

● Experienced Linux system administrators who have responsibilities that include troubleshooting their enterprise Linux environment.

Class Prerequisites:

The knowledge and skills that a learner must have before attending this Red Hat Linux Troubleshooting Training course are:

● Red Hat System Administration I and II or Red Hat Certified System Administrator (RHCSA) Rapid Track Course
● RHCSA certification holder or equivalent experience
● Have system administration knowledge under Red Hat Enterprise Linux, including:
—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)

What You Will Learn:

Upon completing this Red Hat Linux Troubleshooting Training course, learners will be able to meet these 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

Course Outline:

Module 1: Being Proactive, Part 1

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

Module 2: Being Proactive, Part 2

Several approaches to managing configuration changes and developing a recovery plan

Module 3: Basic Troubleshooting Techniques and Procedures

An introduction to troubleshooting methods, best practices, and tools

Module 4: Booting Issues

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

Module 5: Hardware Issues

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

Module 6: File System Issues

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

Module 7: Disk Issues

Rescuing LVM volumes; maintenance of LUKS-encrypted volumes

Module 8: Networking Issues

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

Module 9: Application Issues

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

Module 10: Security Issues

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

Module 11: Red Hat Resources

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

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