Red Hat Linux Troubleshooting Virtual (RH242VT) outline

Techniques for troubleshooting a Linux system

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.