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Migrating from Bitnami Charts and Images

Opik’s Helm chart has migrated from Bitnami charts and images to official Docker images and alternative Helm charts. This migration provides better compatibility, security, and maintainability.

Why Migrate from Bitnami?

Bitnami changed its distribution model in 2025:

Free old public images deprecated: Versioned images were moved to a “legacy” unmaintained repository with no security updates
Hardened images now subscription-based: Access to maintained, secure images requires a paid subscription
Bitnami charts tightly depend on Bitnami images: Bitnami charts cannot switch to official images, creating a dependency on the subscription model

By migrating to official Docker images and alternative Helm charts, we ensure:

Continued Free Access: Official images from upstream projects (e.g., mysql, redis, zookeeper, minio) remain freely available with full version support
Security Updates: Direct access to security patches and updates from the official maintainers
Production Stability: Ability to pin specific versions for production deployments
Long-term Sustainability: Reduced dependency on third-party commercial services
Community Standards: Official images follow industry best practices and are widely adopted, making it easier to find documentation and community support

Upgrade Instructions

If you’re upgrading the Opik Helm chart from version 1.9.39 or older, you need to enable the chart migration:

1 chartMigration:
2   enabled: true

Important: Set chartMigration.enabled: true only for the first upgrade that includes the migration from Bitnami. After the migration completes successfully, set it back to false for subsequent upgrades.

How the Migration Works

The migration is seamless and data-preserving:

Automatic Resource Recreation: The migration job automatically deletes and recreates StatefulSets and Deployments that are relevant for your installation
Data Preservation: All PersistentVolumeClaims (PVCs) are preserved, ensuring no data loss
Zero Downtime: The migration happens as a pre-upgrade hook, and new resources are created immediately after

Data Directory Configuration

MySQL, MinIO, and Zookeeper are configured to use Bitnami data paths by default to ensure seamless migration:

MySQL: Uses /bitnami/mysql/data data directory
MinIO: Uses Bitnami-compatible paths
Zookeeper: Uses /bitnami/zookeeper/data data directory

If you originally overrode the default Bitnami data paths in your configuration, make sure your values.yaml matches those custom paths to ensure the migration can access your existing data.

What Changed

The following components have been migrated to use official Docker images:

Zookeeper: Migrated from bitnami/zookeeper to official zookeeper:3.9.4 image using the CloudPirates Zookeeper chart
MySQL: Migrated from Bitnami MySQL chart to comet-mysql-helm chart using the official mysql:8.4.2 image
Redis: Migrated from Bitnami Redis chart to CloudPirates Redis chart using the official redis/redis-stack-server:7.2.0-v10 image
MinIO: Migrated from Bitnami MinIO chart to CloudPirates MinIO chart using the official minio/minio image

Benefits of Migration

Official Images: Using official Docker images provides better security updates and community support
Simplified Configuration: Reduced complexity in chart dependencies
Better Compatibility: Improved compatibility with modern Kubernetes versions
Maintained Charts: Active maintenance and updates from the community

Need Help?

If you encounter issues during migration, please check the troubleshooting guide or reach out for support.