Kubernetes Architecture· Oct 5, 2023· 1 min read

Guaranteeing Database Persistence on Kubernetes with StatefulSets & PVCs

Shafikul Islam
Shafikul Islam

Backend Infrastructure & Cloud Performance Consultant

Guaranteeing Database Persistence on Kubernetes with StatefulSets & PVCs

The Architecture Pattern

Running stateful databases inside Kubernetes requires careful volume binding to prevent data corruption during pod rescheduling. Deploying databases as simple Deployments leads to volume lock conflicts and data loss during node evictions.

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    StatefulSets with VolumeClaimTemplates: Ensures each database replica receives a unique, stable network identity and dedicated PersistentVolumeClaim (PVC).
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    StorageClass Dynamic Provisioning: Binding local high-performance NVMe storage or cloud block storage with automated snapshots.
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    Disaster Recovery Simulation: Testing control-plane failures and node terminations to verify state survival and automated master-replica failover within 60 seconds.
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