At a glance
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Course number U8531S
Length 5 days
Delivery method Virtual Instructor-Led Training (VILT)
Instructor-led training (ILT)
Onsite dedicated training (OST)
Price USD $3,000
CAD $3,300
*Courses are supported in the delivery formats above, but are not necessarily scheduled in every delivery format listed. Please click the schedule links at the top of the page to see which delivery formats are currently scheduled.

Course overview

This 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.

Prerequisites

This course is designed for intermediate to advanced users. Students should have already taken U8583S, H7091S and H7092S, or have equivalent knowledge. A short refresher for each topic will be presented, but will not be discussed in depth.

Supported Distributions

  • Red Hat Enterprise Linux 7, SUSE Linux Enterprise 12

Audience

  • Linux system administrators wanting to increase their skills in troubleshooting

Ways to save

Benefits to you

This course addresses a wide range of interesting topics to experienced Linux system administrators that are responsible for troubleshooting Linux. The course focuses on teaching the student practical Linux troubleshooting methodologies as well as introducing students to a wide variety of administration tools and techniques to assist in troubleshooting with plenty of real-world hands-on laboratory exercises to enhance skill development during the course.

Course outline

Chapter 1 - Troubleshooting Methodology

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

Chapter 2 - 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
  • ss/netstat and rpcinfo
  • map
  • Netcat
  • tcpdump and wireshark

Lab Tasks

  • Determining the System's Configuration
  • Troubleshooting with rpm
  • Process Related Tools
  • Network Tools

Chapter 3 - Rescue Environments

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

Lab Tasks

  • Recovery Runlevels
  • Recovering Damaged MBR
  • Recover from Deleted Critical Files

Chapter 4 - Topic Group 1

  • Linux Boot Process
  • Booting Linux on PCs
  • Troubleshooting With GRUB 2
  • 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

Lab Tasks

  • Troubleshooting Problems: Topic Group 1

Chapter 5 - Topic 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

Lab Tasks

  • Troubleshooting Problems: Topic Group 2

Chapter 6 - Topic Group 3

  • X11 Concepts
  • X11 Server Operation
  • X11 Troubleshooting
  • Syslog Concepts
  • Syslog Troubleshooting
  • PM Concepts
  • RPM Troubleshooting
  • Common Unix Printing System (CUPS)
  • CUPS Troubleshooting
  • CUPS Troubleshooting
  • at & cron
  • at & cron Usage
  • at & cron Troubleshooting

Lab Tasks

  • Troubleshooting Problems: Topic Group 3

Chapter 7 - Topic 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

Lab Tasks

  • Troubleshooting Problems: Topic Group 4

Chapter 8 - 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
  • NIS and NIS+ (YP)
  • NIS Troubleshooting Aids

Lab Tasks

  • Troubleshooting Problems: Topic Group 5

Chapter 9 - Topic Group 6

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

Lab Tasks

  • Troubleshooting Problems: Topic Group 6

Chapter 10 - Topic Group 7

  • Samba Concepts
  • Samba Troubleshooting
  • Postfix Concepts
  • Postfix Troubleshooting
  • Postfix Troubleshooting
  • IMAP & POP Concepts
  • IMAP/POP Troubleshooting
  • MariaDB
  • MariaDB Troubleshooting

Lab Tasks

  • Troubleshooting Problems: Topic Group 7

U8531S - H.00