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Kubernetes Intermediate About 30 min +220 XP

Gateway Pods Run but Receive No Traffic

Both gateway pods have been Running for ten minutes and neither has ever become Ready, so no gateway replica is eligible for traffic.

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Briefing

gateway 2.3.0 went out ten minutes ago with a refactored manifest.

Both pods started straight away and neither has restarted once, yet neither has ever reported Ready, and the rollout has now blown through its progress deadline.

This is the gateway's first deploy to this cluster, so there is no older ReplicaSet to fall back on, and partner API calls are failing.

Sam thinks 2.3.0 is hanging on a new startup dependency and wants to roll back to 2.2.

The fix is yours to find: hints, the recovery checks and the debrief unlock inside the incident.

How it plays

  1. 01

    Get paged

    The alert fires and the clock starts. Read the page and the briefing.

  2. 02

    Investigate

    Work in a simulated shell with realistic output: logs, configs, services.

  3. 03

    Fix it

    Change the system the way you would in production. Hints are there if you get stuck.

  4. 04

    Prove it

    Automated checks verify the recovery, then the debrief explains what happened.

All 61 incidents
Kubernetes Intermediate

API Pods Restart Across the Rollout

Every api replica is in CrashLoopBackOff and the Deployment has shown 0 of 3 available for ten minutes.

+220 XP35 minStage 4/4

Kubernetes Intermediate

Webapp Pods Never Become Available

The migrated webapp has shown 0 of 1 available replicas from the moment it was applied to the new cluster four minutes ago.

+190 XP30 min

Kubernetes Beginner

Order Scoring Pods Keep Restarting

Both order-scoring worker pods die within seconds of every start, and the orders.score backlog keeps climbing.

+160 XP20 minStage 3/5

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