Security Hardening Lab for internal analytics cluster #19

Code Example

groups:
  - name: reliability.rules
    rules:
      - alert: HighErrorRate
        expr: rate(http_requests_total{status=~"5.."}[5m]) > 0.05
        for: 10m
        labels:
          severity: critical
        annotations:
          summary: "High error rate detected"
          description: "Objective: increase infrastructure consistency | Scenario: internal analytics cluster"

Commands & References

• ip a
• git checkout -b feature/ci
• docker run -p 3000:3000 app:dev

Lab Steps

1. Prepare tooling and environment with: ip a
2. Apply infrastructure or deployment change in a safe test environment.
3. Validate rollout/health/metrics and document observations.
4. Propose one reliability or security improvement for production.

Exercises

• Add one guardrail to prevent faulty deployments.
• Implement one observability signal for faster incident debugging.
• Write a rollback checklist for this scenario.