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Scenario #390
Storage
Kubernetes v1.26, vSphere CSI

Dynamic Provisioning Failure Due to Quota Exhaustion

PVCs failed to provision silently due to exhausted storage quota.

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What Happened

Storage backend rejected volume create requests.

Diagnosis Steps
  • 1PVC stuck in Pending.
  • 2CSI logs: quota exceeded.
Root Cause

Backend quota exceeded without Kubernetes alerting.

Fix/Workaround
• Increased quota or deleted old volumes.
Lessons Learned

Kubernetes doesn’t surface backend quota status clearly.

How to Avoid
  • 1Integrate storage backend alerts into cluster monitoring.
  • 2Tag and age out unused PVCs periodically.
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