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Production MySQL on Kubernetes with StatefulSets

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A new GitHub repository provides a production-ready MySQL deployment using Kubernetes StatefulSets. The setup includes a primary database with replicas, headless service for stable DNS, and ClusterIP services for read/write splitting.

The configuration uses init containers to assign roles based on pod ordinals, ensuring each replica gets unique server IDs. Separate ConfigMaps handle primary and replica settings, while a sidecar container auto-configures replication from the primary node.

Security is addressed through Kubernetes Secrets for credentials and NetworkPolicies to restrict traffic. A PodDisruptionBudget prevents quorum loss during maintenance. This approach offers better high availability than basic deployments but lacks automated failover mechanisms.

Operators still need backup strategies, proper storage configuration, and resource tuning for production workloads. The included verification script helps teams validate DNS resolution and service routing quickly after deployment.