RH342: Red Hat Enterprise Linux Diagnostics and Troubleshooting

RH342: Red Hat Enterprise Linux Diagnostics and Troubleshooting develops practical capability in systematic RHEL diagnostics for boot, hardware, storage, software, networking, services, security, kernel, performance, evidence collection, and root-cause analysis.

Learners progress through Diagnostic Methodology, Evidence Collection, Support Tools, and Boot Analysis; Hardware, Storage, Filesystems, LVM, RPM, and Software Troubleshooting; Networking, Services, Applications, SELinux, Authentication, and Logs; Kernel, Memory, CPU, Performance, Root Cause, and Prevention. Each stage connects Red Hat technology with implementation decisions, operational controls, troubleshooting, and reviewable evidence.

The learning journey follows a senior Linux support team resolving recurring production incidents with a consistent diagnostic methodology and produces a practical RHEL diagnostic workflow, incident evidence pack, root-cause report, and preventive action register for implementation and operational use.

What You Will Learn

• Compare structured diagnostic methodology and evidence preservation alternatives and explain operational and technical trade-offs.
• Document boot, service, and dependency failure analysis using repeatable commands, evidence, ownership, and handover notes.
• Improve hardware, storage, filesystem, and LVM diagnosis through monitoring, exception handling, automation, and review cycles.
• Map RPM integrity and software configuration checks across architecture, roles, dependencies, controls, and evidence.
• Configure network, application, authentication, and SELinux troubleshooting with reproducible settings and validated prerequisites.
• Execute kernel, memory, CPU, and I/O performance analysis and interpret outputs, events, logs, and system behavior.
• Diagnose root-cause validation through reproducible testing through targeted checks, traces, and corrective testing.
• Validate preventive actions, knowledge capture, and support handover against security, reliability, governance, and acceptance criteria.

SkillDynamo Training Approach

Training combines course-specific demonstrations, hands-on Red Hat exercises, scenario analysis, validation checklists, structured troubleshooting, and a final improvement plan for RH342: Red Hat Enterprise Linux Diagnostics and Troubleshooting.