Kubernetes · PDB · Advanced
The disruption budget blocks maintenance
Node drain stalls because healthy Pods cannot be evicted.
INITIAL ALERT
Node drain stalls because healthy Pods cannot be evicted.
You are primary on-call. Establish the failure domain, protect healthy capacity, and choose the safest next action.
The workload is serving and replacement nodes are Ready.
The decisive evidence and solution remain locked inside the simulation.WHAT THIS TESTS
Production judgment across Kubernetes · PDB.
Kubernetes status names the stage where work stopped. Reading scheduler events, controller state, and object relationships beats debugging an application that never started.
- 01Use Kubernetes state to choose the next check
- 02Trace workload, Service, and storage relationships
- 03Recover safely under rollout constraints
SIMULATION STRUCTURE
Four evidence layers. No answer shown here.
The full exercise unlocks each layer as you commit to decisions.
Alert
Confirm the reported symptom and customer impact.
Baseline
Compare the failing path with a known-good condition.
Finding
Identify the evidence that separates plausible causes.
Change
Choose a controlled recovery and a durable prevention step.
Can you make the call without seeing the solution?
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