Professional Level
19 Hands-on labs

Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting Exam Prep (RH342 )

By Michael Christian

Let's learn to diagnose and troubleshoot issues in Red Hat.

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34 hours
  • 54 Lessons
  • 19 Hands-On Labs

About the course

This course will prepare you for the Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting exam (EX342). You will learn to troubleshoot, diagnose, and resolve (or provide evidence of) issues that cause degradation and loss of performance. In addition to preparation for the exam, this course is suited to those that wish to develop their skills in RHEL troubleshooting.

This course is not approved or sponsored by Red Hat.

Lab Highlights

Troubleshooting network issues Troubleshooting SELinux Issues Recover a Corrupted Filesystem Identify and Fix iSCSI Issues Troubleshooting Authentication Issues Troubleshooting Application Issues Using the Troubleshooting Tools within the RHEL Environment Manage kernel modules and their parameters Troubleshooting File System Issues Recover Data from Encrypted File Systems Troubleshoot Service Errors on Start Identify and Fix LDAP and Kerberos Identity Management Issues RH342 Practice Exam Configuring Remote Logging on Linux Recover Mis-Configured or Broken LVM Configurations Troubleshooting kernel issues Troubleshooting RPM Issues Monitor Systems for Vital Characteristics Identify and Fix Pluggable Authentication (PAM) Issues
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  • Chapter 1 4 Lessons Introduction 12:15

    An Important Note About A Cloud Guru and Linux Academy Courses

    1:19

    About the Author

    0:17

    About this Course

    1:48

    The Exam

    8:51
  • Chapter 2 8 Lessons Understand and employ general methods for troubleshooting 5:02:11

    Get into a troubleshooting mindset

    8:17

    Collect system information to aid in troubleshooting

    19:04

    Consult documentation resources to aid in troubleshooting

    13:16

    Monitor systems for vital characteristics

    13:52

    Configure systems to send log messages to a centralized host

    7:42

    Using the troubleshooting tools available within the RHEL environment

    1:30:00 Hands-On Lab

    Monitor systems for vital characteristics

    1:30:00 Hands-On Lab

    Configure remote logging

    1:00:00 Hands-On Lab
  • Chapter 3 7 Lessons Diagnose and troubleshoot system start up issues 3:29:15

    Identify and resolve service failures affecting boot

    9:50

    Regain root control of a system

    8:30

    Troubleshoot boot issues

    12:57

    Identify hardware and hardware problems

    9:22

    Manage kernel modules and their parameters

    18:36

    Troubleshoot service errors on start

    1:30:00 Hands-On Lab

    Manage kernel modules and their parameters

    1:00:00 Hands-On Lab
  • Chapter 4 9 Lessons Diagnose and troubleshoot file system issues 9:22:29

    Recover corrupted file systems

    14:26

    Recover mis-configured or broken LVM configurations

    10:22

    Recover data from encrypted file systems

    14:23

    Identify and fix iSCSI issues

    13:18

    Recover a corrupted filesystem

    1:00:00 Hands-On Lab

    Recover mis-configured or broken LVM configurations

    1:00:00 Hands-On Lab

    Recover data from encrypted file systems

    1:00:00 Hands-On Lab

    Identify and fix iSCSI issues

    1:30:00 Hands-On Lab

    Troubleshooting file system issues

    4:00:00 Hands-On Lab
  • Chapter 5 4 Lessons Resolve package management issues 1:17:12

    Resolve package management dependency issues

    6:03

    Recover a corrupted RPM database

    5:06

    Identify and restore changed files

    6:03

    Troubleshooting RPM issues

    1:00:00 Hands-On Lab
  • Chapter 6 4 Lessons Troubleshoot and fix network connectivity issues 1:58:52

    Use standard tools to verify network connectivity

    9:27

    Identify and fix network connectivity issues

    12:10

    Inspect network traffic to aid troubleshooting

    7:15

    Troubleshooting network issues

    1:30:00 Hands-On Lab
  • Chapter 7 6 Lessons Diagnose application issues 3:01:06

    Identify library dependencies for third-party software

    5:32

    Identify if an application suffers from memory leaks

    4:28

    Use standard tools to debug an application

    5:42

    Identify and fix issues related to SELinux

    15:24

    Troubleshooting application issues

    1:30:00 Hands-On Lab

    Troubleshooting SELinux issues

    1:00:00 Hands-On Lab
  • Chapter 8 5 Lessons Identify and fix authentication issues 4:49:45

    Identify and fix pluggable authentication module (PAM) issues

    11:17

    Identify and fix LDAP and Kerberos identity management issues

    8:28

    Identify and fix pluggable authentication (PAM) issues

    1:00:00 Hands-On Lab

    Identify and fix LDAP and Kerberos identity management issues

    1:30:00 Hands-On Lab

    Troubleshooting authentication issues

    2:00:00 Hands-On Lab
  • Chapter 9 4 Lessons Gather information to aid third party investigation of issues 1:42:32

    Create kernel crashdumps

    2:37

    Compile and execute SystemTap modules

    6:05

    Sosreports

    3:50

    Troubleshooting kernel issues

    1:30:00 Hands-On Lab
  • Chapter 10 1 Lesson Practice Exam 4:00:00

    RH342 Practice Exam

    4:00:00 Hands-On Lab
  • Chapter 11 2 Lessons Next Steps 2:51

    Conclusion and Review

    1:29

    What's Next

    1:22

What you will need

  • This is a Red Hat Certified Architect level course. The prospective student should hold the following certifications or possess the requisite experience: Red Hat Certified System Administrator (RHCSA) Red Hat Certified Engineer (RHCE)Many of the objectives and tasks require knowledge above and beyond that which is provided by the RHCSA and RHCE certification programs. This course focuses on providing that knowledge.

What are Hands-on Labs

What's the difference between theoretical knowledge and real skills? Practical real-world experience. That's where Hands-on Labs come in! Hands-on Labs are guided, interactive experiences that help you learn and practice real-world scenarios in real cloud environments. Hands-on Labs are seamlessly integrated in courses, so you can learn by doing.

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