CS229 Deploying Production AWS ROSA Clusters: Creation, Configuration, and Application Integration — Lesson 1: ROSA Architecture, AWS Accounts, IAM, Networking, DNS, and Prerequisites

Learning Objectives

• Interpret the architecture, dependencies, and expected behavior of ROSA architecture, AWS accounts, and IAM roles.
• Apply VPC networking and DNS and prerequisites while preserving reviewable technical evidence.
• Recognize and correct the risk where a hidden prerequisite causes the first configuration step to produce an incomplete result.

Detailed Topics

• ROSA architecture: apply the concept to a cloud platform team deploying a production ROSA cluster and onboarding a business application, record the relevant settings or decisions, and explain the operational consequence.
• AWS accounts: apply the concept to a cloud platform team deploying a production ROSA cluster and onboarding a business application, record the relevant settings or decisions, and explain the operational consequence.
• IAM roles: apply the concept to a cloud platform team deploying a production ROSA cluster and onboarding a business application, record the relevant settings or decisions, and explain the operational consequence.
• VPC networking: apply the concept to a cloud platform team deploying a production ROSA cluster and onboarding a business application, record the relevant settings or decisions, and explain the operational consequence.
• DNS and prerequisites: apply the concept to a cloud platform team deploying a production ROSA cluster and onboarding a business application, record the relevant settings or decisions, and explain the operational consequence.

Instructor Demonstration

The instructor demonstrates rosa architecture, aws accounts, iam, networking, dns, and prerequisites by tracing the relevant architecture, commands, configuration, messages, and evidence. The walkthrough highlights how a hidden prerequisite causes the first configuration step to produce an incomplete result and shows how to isolate the cause without masking dependent issues.

Hands-On Exercise

Build a baseline and capture the initial state for ROSA Architecture, AWS Accounts, IAM, Networking, DNS, and Prerequisites. Add verified outcomes to the ROSA production design, cluster deployment evidence, application integration record, and operations runbook.

1. Confirm the scope, versions, access, dependencies, and success criteria.
2. Perform the workflow while recording commands, settings, output, and platform events.
3. Test one expected case and one controlled exception specific to this lesson.
4. Retest the correction and document ownership, rollback, and follow-up actions.

Scenario Analysis

• Identify which dependency most strongly influences ROSA architecture in the stated scenario.
• Compare two approaches for VPC networking and explain the security, reliability, and support trade-offs.
• Decide what evidence must be retained in the ROSA production design, cluster deployment evidence, application integration record, and operations runbook before operational acceptance.

Troubleshooting Guidance

Begin with the first observable difference from the expected result. Check architecture, access, dependencies, and starting conditions separately, then correlate logs, events, commands, and configuration history. Do not accept the initial assumption that a hidden prerequisite causes the first configuration step to produce an incomplete result; confirm the cause with a reproducible retest.

Validation Checklist

• The required architecture, access, dependencies, and starting conditions were checked and recorded.
• The normal path and a course-specific exception were tested.
• The ROSA production design, cluster deployment evidence, application integration record, and operations runbook links conclusions to commands, configuration, logs, or other objective evidence.
• Corrective actions, rollback steps, ownership, and handover notes are complete.

Lesson Outcome

Learners can apply ROSA Architecture, AWS Accounts, IAM, Networking, DNS, and Prerequisites, explain the observed Red Hat platform behavior, and support the result with a reviewable ROSA production design, cluster deployment evidence, application integration record, and operations runbook.