Oracle Linux 8: System Administration I — Lesson 4: DNF, Repositories, Ksplice Awareness, Processes, Logs, and Support

Learning Objectives

• Explain the architecture, workflow, or business purpose behind RPM and DNF packages, modules, repositories, and dependency handling.
• Apply updates, kernel management, Ksplice awareness, and reboot coordination and processes, signals, jobs, memory, CPU, disks, and system logs in a controlled scenario.
• Validate outcomes and troubleshoot risks involving scheduled tasks, backups, troubleshooting workflow, runbooks, and handoff.

Detailed Topics

• RPM and DNF packages, modules, repositories, and dependency handling
• updates, kernel management, Ksplice awareness, and reboot coordination
• processes, signals, jobs, memory, CPU, disks, and system logs
• scheduled tasks, backups, troubleshooting workflow, runbooks, and handoff

Instructor Demonstration

Demonstrate RPM and DNF packages, modules, repositories, and dependency handling within a new Oracle Linux application host prepared, secured, validated, and handed to production support, then capture the exact configuration, command, transaction, report, model, query, code, or process evidence that proves the result for lesson 4.

Hands-On Exercise

Implement a controlled exercise covering updates, kernel management, Ksplice awareness, and reboot coordination and processes, signals, jobs, memory, CPU, disks, and system logs, then introduce and resolve an exception involving scheduled tasks, backups, troubleshooting workflow, runbooks, and handoff while preserving before-and-after evidence.

1. Confirm the environment, identities, inputs, dependencies, risks, and expected outcome.
2. Complete the course-specific configuration, development, analysis, or process workflow.
3. Capture settings, commands, data, outputs, logs, reports, screenshots, calculations, or test results.
4. Compare the observed result with acceptance criteria and document corrective action.

Scenario Analysis

• Identify the technical or business decision that must be made.
• Compare valid approaches and their security, performance, reliability, cost, compliance, and support trade-offs.
• Define rollback, recovery, ownership, communication, and evidence requirements.

Troubleshooting Guidance

Diagnose issues across RPM and DNF packages, modules, repositories, and dependency handling, updates, kernel management, Ksplice awareness, and reboot coordination, processes, signals, jobs, memory, CPU, disks, and system logs, scheduled tasks, backups, troubleshooting workflow, runbooks, and handoff without making an unverified production change. Separate symptoms from causes, gather evidence, test the smallest reversible correction, rerun validation, and record preventive action.

Validation Checklist

• The requirement, scope, inputs, dependencies, and expected result are documented.
• The result is reproducible and supported by course-specific evidence.
• Normal, boundary, failure, security, performance, and operational conditions are reviewed.
• Exceptions, rollback, ownership, and the next improvement priority are recorded.

Lesson Outcome

Learners can apply DNF, Repositories, Ksplice Awareness, Processes, Logs, and Support in a realistic Oracle Linux 8: System Administration I scenario and validate the result with documented evidence.