DO400 – Red Hat DevOps Pipelines and Processes: CI/CD with Jenkins, Git, and Test Driven Development — Lesson 4: OpenShift Deployment, Pipeline Security, Monitoring, Troubleshooting, and Recovery

Learning Objectives

• Operate, diagnose, document, recover, and improve OpenShift deployment, pipeline security, and performance monitoring.
• Apply failure diagnosis and release recovery while preserving reviewable technical evidence.
• Recognize and correct the condition where the technical result is restored but monitoring, rollback, evidence, ownership, or handover remains incomplete.

Detailed Topics

• OpenShift deployment: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• pipeline security: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• performance monitoring: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• failure diagnosis: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• release recovery: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.

Instructor Demonstration

The instructor demonstrates openshift deployment, pipeline security, monitoring, troubleshooting, and recovery by tracing architecture, commands, configuration, system messages, and evidence. The walkthrough tests how the technical result is restored but monitoring, rollback, evidence, ownership, or handover remains incomplete and explains how to isolate the cause without masking related issues.

Hands-On Exercise

Conduct an operational acceptance review for OpenShift Deployment, Pipeline Security, Monitoring, Troubleshooting, and Recovery and add the verified result to the Git-based application repository, automated test suite, Jenkins pipeline, deployment evidence, and support guide.

1. Confirm scope, versions, access, dependencies, assumptions, and acceptance criteria.
2. Perform the workflow while recording commands, configuration, output, events, and decisions.
3. Test the normal path and one course-specific exception or boundary condition.
4. Retest the correction and document rollback, ownership, and follow-up actions.

Scenario Analysis

• Identify which dependency most strongly influences OpenShift deployment in the stated scenario.
• Compare two approaches for failure diagnosis and explain the security, reliability, performance, and support trade-offs.
• Decide what evidence must be retained in the Git-based application repository, automated test suite, Jenkins pipeline, deployment evidence, and support guide before operational acceptance.

Troubleshooting Guidance

Begin with the first observable difference from the expected result. Check monitoring, troubleshooting, rollback, ownership, evidence, and handover separately, then correlate logs, events, commands, metrics, and configuration history. Treat the assumption that the technical result is restored but monitoring, rollback, evidence, ownership, or handover remains incomplete as a hypothesis until a reproducible retest confirms the cause.

Validation Checklist

• The required monitoring, troubleshooting, rollback, ownership, evidence, and handover were checked and recorded.
• The normal path and a course-specific exception were tested.
• The Git-based application repository, automated test suite, Jenkins pipeline, deployment evidence, and support guide links conclusions to commands, configuration, logs, metrics, or other objective evidence.
• Corrective actions, rollback, ownership, and handover notes are complete.

Lesson Outcome

Learners can apply OpenShift Deployment, Pipeline Security, Monitoring, Troubleshooting, and Recovery, explain the observed platform behavior, and support the result with a reviewable Git-based application repository, automated test suite, Jenkins pipeline, deployment evidence, and support guide.