Course Description

Course Objectives

This course will focus in Linux System Administration diagnostics and troubleshooting techniques with the benefits and help you to increase/improve your:

• Troubleshooting techniques
• 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 such as authentication, and firewall
• Making the most of Red Hat support resources

Who Should Attend?

• This course is for Senior system administrators who wish to learn more about Linux diagnostic and troubleshooting.

Course Schedule

Day-1 Being Proactive

• Monitor system and network performance
• Approaches to managing configuration changes and developing a recovery plan
• Monitor log files, hardware, and file systems

Day-2 Basic Troubleshooting Techniques and Procedurs

• Work with advanced GRUB features
• Recovery runlevels and rescue mode
• Preempting hardware failures (looking for the signs)
• Protecting against hardware failures
• Redundant configurations
• Tools to help identify hardware failures and intermittent problems

Day-3n File System and Disk Issues

• Locate unauthorized changes
• Audit software
• File system tuning and repair
• Rescuing LVM volumes
• File recovery

Day-4 Network and Application Issues

• Manual configuration of network cards
• Connectivity issues
• Network diagnostic tools
• Tune kernel parameters
• Monitor packets
• Troubleshoot SAN communication
• Tools and techniques for troubleshooting applications
• Common application problems and how to solve them