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Linux Troubleshooting

GL314 | 5 days |

This training is designed to give Linux administrators experience with both common and uncommon system problems.

Overview

This training is designed to give Linux administrators experience with both common and uncommon system problems. The course is based on the idea that the best way to learn troubleshooting is to perform troubleshooting. Approximately 25% of class time is spent on lecture, leaving 75% for intensive lab content. Class starts with a discussion of effective troubleshooting technique. Tools and topics are gradually introduced over the course of the week. Students practice applying these tools and techniques in self-paced labs. Students can choose from over 120 scenarios organized by topic and difficulty. Because each scenario is independent of the others, students can choose scenarios according to their interests and experience. Each scenario is designed to help students develop deeper understanding while exploring the problem. All scenarios include optional hints designed to reflect a realistic troubleshooting process while only gradually revealing the solution.

What you’ll learn

  • Troubleshooting Methodology
  • Troubleshooting Tools
  • Rescue Environments
  • Topic Group 1 – Linux Boot Process, Booting Linux on PCs, Boot Process Troubleshooting, Troubleshooting: Linux and Init, Process Management and Process Management Tools, Troubleshooting Processes: top, Filesystem Concepts and Troubleshooting, Backup Concepts and Troubleshooting
  • Topic Group 2 – Networking Tools, Networking Commands Review, Networking Troubleshooting, Virtual Interfaces/IP Aliases, Xinetd Concepts and Troubleshooting, TCP Wrappers Concepts and Troubleshooting, Netfilter/iptables Concepts and Troubleshooting
  • Topic Group 3 – X11 Concepts, Server Operation, and Troubleshooting, Syslog Concepts and Troubleshooting, Syslog-ng Concepts, RPM Concepts and Troubleshooting, Common Unix Printing System (CUPS), CUPS Troubleshooting, at & cron, at & cron Usage and Troubleshooting
  • Topic Group 4 – Users and Groups, Users and Groups Troubleshooting, PAM Concepts and Troubleshooting, Filesystem Quotas, Quotas Troubleshooting, File Access Control Lists, FACL Troubleshooting, SELinux Concepts and Troubleshooting
  • Topic Group 5 – Kernel Modules, Kernel Modules Troubleshooting, Logical Volume Management, Creating Logical Volumes, LVM Deployment Issues, VG Migration, PV Resizing & Troubleshooting, Software RAID Overview, RAID Troubleshooting, LDAP and OpenLDAP, Troubleshooting OpenLDAP
  • Topic Group 6 – DNS Concepts and Troubleshooting, Apache Concepts and Troubleshooting, FTP Concepts and Troubleshooting, Squid Concepts and Troubleshooting
  • Topic Group 7 – Samba Concepts and Troubleshooting, Postfix Concepts and Troubleshooting, Sendmail Concepts and Troubleshooting, IMAP & POP Concepts and Troubleshooting

Calendar

Frequently Asked Questions

Who should attend?

The course is suitable for advanced Linux system administrators who have at least 3 years of experience, professionals experienced in the support of Linux server and Linux developers.

Are there any prerequisites for the training?

This course is designed for intermediate to advanced users. Students should have already taken GL250 and GL275, or have equivalent knowledge. A short refresher for each topic will be presented, but will not be discussed in depth.

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