Linux Troubleshooting


Course Number: LNX-118

Duration: 5 days (32.5 hours)

Format: Live, hands-on

Linux Training Overview

This Linux Troubleshooting training course teaches Linux administrators how to tackle both common and uncommon system problems. Attendees learn effective troubleshooting techniques and then practice applying them in a realistic troubleshooting workshop process. This Linux course covers the troubleshooting of topics and technologies that were introduced in the three core classes, Linux Fundamentals, Enterprise Linux System Administration, and Enterprise Linux Network Services.

NOTE: This class can be taught using the Linux distribution of your choice.

Location and Pricing

Accelebrate offers instructor-led enterprise training for groups of 3 or more online or at your site. Most Accelebrate classes can be flexibly scheduled for your group, including delivery in half-day segments across a week or set of weeks. To receive a customized proposal and price quote for private corporate training on-site or online, please contact us.

In addition, some Programming courses are available as live, online classes for individuals.

Objectives

All students will understand Linux troubleshooting methodology and tools.

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.

Prerequisites

This course is designed for intermediate to advanced users. Students should have already taken the Linux Fundamentals, Enterprise Linux Systems Administration, and Enterprise Linux Network Services, or have equivalent knowledge. A short refresher for each topic will be presented, but will not be discussed in depth.

Outline

Expand All | Collapse All

Introduction
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
  • ss/netstat and rpcinfo
  • nmap
  • Netcat
  • tcpdump and wireshark
Rescue Environments
  • Diagnostic/Recovery
  • Rescue Procedures
  • Recovery: mount & chroot
  • Recovery Examples
  • Recovery: Network Utilities
Topic Group 1
  • Linux Boot Process
  • System Boot Method Overview
  • Systemd System and Service Manager
  • Modifying systemd services
  • Using systemd
  • 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
Topic Group 2
  • Networking Tools
  • Linux Network Interfaces
  • Networking Commands Review
  • NetworkManager
  • Networking Troubleshooting
  • Networking Troubleshooting
  • Virtual Interfaces/IP Aliases
  • Network Teaming
  • Xinetd Concepts
  • Xinetd Troubleshooting
  • TCP Wrappers Concepts
  • TCP Wrappers Concepts
  • TCP Wrappers Troubleshooting
  • Netfilter/iptables Concepts
  • Netfilter/iptables Troubleshooting
Topic Group 3
  • X11 Concepts
  • X11 Server Operation
  • X11 Troubleshooting
  • Rsyslog Concepts
  • System Logging
  • Systemd Journal
  • Systemd Journal's journalctl
  • Secure Logging with Journal's Log Sealing
  • Syslog Troubleshooting
  • RPM Concepts
  • RPM Troubleshooting
  • Common Unix Printing System (CUPS)
  • CUPS Troubleshooting
  • CUPS Troubleshooting
  • at & cron
  • at & cron Usage
  • at & cron Troubleshooting
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
Topic 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
  • Multipathing Overview
  • SAN Multipathing
  • Multipath Configuration
  • Multipathing Best Practices
  • LDAP and OpenLDAP
  • Troubleshooting OpenLDAP
  • NIS and NIS+ (YP)
  • NIS Troubleshooting Aids
Topic Group 6
  • DNS Concepts
  • DNS Troubleshooting
  • DNS Troubleshooting
  • Apache Concepts
  • Apache Troubleshooting
  • Apache Troubleshooting
  • FTP Concepts
  • FTP Troubleshooting
  • Squid Concepts
  • Squid Troubleshooting
Topic Group 7
  • Samba Concepts
  • Samba Troubleshooting
  • Postfix Concepts
  • Postfix Troubleshooting
  • Postfix Troubleshooting
  • IMAP & POP Concepts
  • IMAP/POP Troubleshooting
  • MariaDB
  • MariaDB Troubleshooting
Conclusion

Training Materials:

All Linux training attendees receive comprehensive courseware.

Software Requirements:

Attendees will not need to install any software on their computer for this class. The class will be conducted in a remote environment that Accelebrate will provide; students will only need a local computer with a web browser with a stable Internet connection. Any recent version of Microsoft Edge, Mozilla Firefox, or Google Chrome will be fine.



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