Linux Troubleshooting Workshop

Course: LNXFIX

Duration: 5 Days

Level: III

Course Summary

The Linux Troubleshooting course 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 includes optional hints designed to reflect a realistic troubleshooting process while only gradually revealing the solution. Students find the flexibility and challenge of this course very rewarding.

« Hide The Details

Topics Covered In This Course

Troubleshooting Methodology

The Troubleshooting Mindset
Evaluating Possible Solutions
Identifying and Implementing Change
Define and Follow Policies
Working with Others
Finding Documentation
Finding Help Online

Troubleshooting Tools

Common Troubleshooting Tools
RPM Queries
RPM Verification
SRPM and spec Files
Hardware Discovery Tools
Configuring New Hardware with hwinfo
strace and ltrace
lsof and fuser
ipcs and ipcrm
iostat, mpstat, and vmstat
Using hdparm to Measure
Troubleshooting with the ip command
Name Resolution
netstat and rpcinfo
nmap
Netcat
tcpdump and wireshark

Rescue Environments

Diagnostic/Recovery Runlevels
Rescue Procedures
Recovery: mount & chroot
Recovery Examples
Recovery: Network Utilities

Troubleshooting Group 1

Linux Boot Process
Booting Linux on PCs
Troubleshooting With GRUB
Boot Process Troubleshooting
Troubleshooting: Linux and Init
Process Management
Process Management Tools
Troubleshooting Processes: top
Filesystem Concepts
Filesystem Troubleshooting
Backup Concepts
Backup Troubleshooting
Backup Troubleshooting

Troubleshooting Group 2

Networking Tools
Networking Commands Review
Networking Troubleshooting
Networking Troubleshooting
Virtual Interfaces/IP Aliases
Xinetd Concepts
Xinetd Troubleshooting
TCP Wrappers Concepts
TCP Wrappers Concepts
TCP Wrappers Troubleshooting
Netfilter/iptables Concepts
Netfilter/iptables Troubleshooting

Troubleshooting Group 3

X11 Concepts
X11 Server Operation
X11 Troubleshooting
Syslog Concepts
syslog-ng Concepts
Syslog Troubleshooting
RPM Concepts
RPM Troubleshooting
Common Unix Printing System (CUPS)
CUPS Troubleshooting
CUPS Troubleshooting
at & cron
at & cron Usage
at & cron Troubleshooting

Troubleshooting Group 4

Users and Groups
Users and Groups Troubleshooting
PAM Concepts
PAM Troubleshooting
Filesystem Quotas
Quotas Troubleshooting
File Access Control Lists
FACL Troubleshooting
SELinux Concepts
SELinux Troubleshooting
SELinux Troubleshooting Continued

Troubleshooting Group 5

Kernel Modules
Kernel Modules Troubleshooting
Logical Volume Management
Creating Logical Volumes
LVM Deployment Issues
VG Migration, PV Resizing & Troubeshooting
Software RAID Overview
RAID Troubleshooting
LDAP and OpenLDAP
Troubleshooting OpenLDAP

Troubleshooting Group 6

DNS Concepts
DNS Troubleshooting
DNS Troubleshooting
Apache Concepts
Apache Troubleshooting
Apache Troubleshooting
FTP Concepts
FTP Troubleshooting
Squid Concepts
Squid Troubleshooting

Troubleshooting Group 7

Samba Concepts
Samba Troubleshooting
Postfix Concepts
Postfix Troubleshooting
Postfix Troubleshooting
Sendmail Concepts
Sendmail Troubleshooting
IMAP & POP Concepts
IMAP/POP Troubleshooting

Recommended Prerequisites

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

Training Style

Short lectures sessions combined with extensive hands-on practice (75%).

« Hide The Details

Related Courses

Code	Course Title	Duration	Level
LNXADM	Enterprise Linux System Administration	5 Days	I	Details
LNXNET	Enterprise Linux Networking Services	5 Days	II	Details
LNXA4UA	Linux System Administration for UNIX Administrators	5 Days	III	Details

Every student attending a Verhoef Training class will receive a certificate good for $100 toward their next public class taken within a year.

You can also buy "Verhoef Vouchers" to get a discounted rate for a single student in any of our public or web-based classes. Contact your account manager or our sales office for details.

Schedule For This Course
There are currently no public sessions scheduled for this course. We can schedule a private class for your organization just a couple of weeks from now. Or we can let you know the next time we do schedule a public session.

Notify me the next time this course is confirmed!

Can't find the course you want?
Call us at 800.533.3893, or
email us at [email protected]