Red Hat Enterprise Linux Diagnostics and Troubleshooting
Abstract
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Review tasks from Red Hat Enterprise Linux Diagnostics and Troubleshooting. |
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Objectives
After completing this section, you should have reviewed and refreshed the knowledge and skills that you learned in Red Hat Enterprise Linux Diagnostics and Troubleshooting.
Reviewing Red Hat Enterprise Linux Diagnostics and Troubleshooting
Before beginning the comprehensive review for this course, you should be comfortable with the topics covered in each chapter. Do not hesitate to ask the instructor for extra guidance or clarification on these topics.
Chapter 1, Introducing Troubleshooting Strategy
Describe effective troubleshooting methods and data collection strategies.
Use a systematic approach to troubleshooting with the scientific method.
Collect system information to support troubleshooting.
Use Red Hat resources to support troubleshooting.
Chapter 2, Configuring Baseline Data
Configure baseline data collection with monitoring, logging, and change tracking.
Monitor systems to gather information.
Configure systems for remote logging to a central log host.
Describe configuration management with Red Hat Satellite and Red Hat Ansible Automation Platform.
Implement change tracking to monitor system modifications.
Chapter 3, Troubleshooting Boot Issues
Identify and resolve issues that can affect a system's ability to boot.
Repair boot issues on BIOS systems.
Repair boot issues on UEFI systems.
Identify and resolve service failures that affect the boot process.
Reset the root password.
Chapter 4, Identifying Hardware Issues
Identify hardware issues that can affect a system's ability to operate normally.
Identify system hardware devices and hardware issues.
Manage kernel modules and parameters.
Identify and resolve virtualization issues.
Chapter 5, Troubleshooting Storage Issues
Identify and resolve issues related to storage.
Describe the Linux storage layers and their function, and identify tools to examine activity at different layers.
Detect and recover from file system corruption.
Revert an LVM storage misconfiguration.
Recover data from an encrypted device.
Identify and repair iSCSI issues.
Chapter 6, Troubleshooting RPM Issues
Identify and resolve issues with the package management subsystem.
Identify and resolve package dependency issues.
Identify and rebuild a corrupted RPM database.
Identify and restore changed files with package management tools.
Register a system with Red Hat and manage Red Hat subscriptions.
Chapter 7, Troubleshooting Network Issues
Identify and resolve network connectivity issues.
Verify network connectivity with standard RHEL tools.
Identify and repair network connectivity issues.
Inspect network traffic to assist troubleshooting.
Chapter 8, Troubleshooting Application Issues
Identify and resolve application issues with debugging tools.
Identify library dependencies for installed software.
Identify applications that have memory leaks.
Debug an application with standard RHEL tools.
Troubleshoot a containerized application or service.
Chapter 9, Troubleshooting Security Issues
Identify and resolve issues related to security subsystems.
Identify and repair SELinux issues.
Identify and repair user authentication and authorization issues.
Identify and repair LDAP, Kerberos, and SSSD identity management issues.
Chapter 10, Troubleshooting Kernel Issues
Identify kernel issues and assist Red Hat Support in resolving kernel issues.
Configure systems to enable kernel crash dumps.
Compile SystemTap scripts into kernel modules for deployment on remote systems.
