Lab 13CI/CD & Release Reasoning20m

DevOps Pipeline Diagnosis Lab

beginner

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Root CauseMissing production config setting crashes boot

Revealed RunAll Green

History Step0

1. Pipeline Stage Order & Run

1. Lint & Static Analysispassed

2. Unit Test Suitepending

3. Integration Testspending

4. Canary 10% Rolloutpending

5. Config Validationpending

Pipeline Run

Stage 1/5

Searchable Build Logs (cite evidence)

[Lint & Static Analysis] ESLint passed: 0 warnings, 0 errors[Unit Test Suite] Jest: 142 tests passed in 14.2s[Integration Tests] FATAL: DATABASE_POOL_SIZE is not set. Service failed health check at boot.[Integration Tests] FATAL: FEATURE_FLAG_SERVICE_URL is not set. Falling back failed — no default configured.[Canary 10% Rollout] Awaiting upstream stages.

Read-Only Config Diff

The deploy environment was missing two required settings, so the service crashed on boot during integration tests.

DATABASE_POOL_SIZE=<unset>
FEATURE_FLAG_SERVICE_URL=<unset>

DATABASE_POOL_SIZE=20
FEATURE_FLAG_SERVICE_URL=https://flags.internal.example/v1

2. Select Root-Cause Fix

Before/After Pipeline-Stage Timing

Release Checklist

Static analysis clean

Required settings validated

Unit tests green

Integration tests green

Release Note & Post-Incident Reflection

1. Validity

Inputs Supported

All configuration parameters are valid.

2. Correctness

Objective: Demonstrated

Ready for verification run

3. Constraints

Within Limits

Budget, SLA, and capacity limits respected.

4. Trade-offs

Analysis

Inspect scenario parameters to evaluate trade-offs.