Migrate MinIO bucket: Tenant-scoped object prefixes

Move object storage from MinIO bucket to Ample, one component at a time. Destination verified on Ample: every tenant's objects stored under tenants// in a private bucket with an ownership row per object, reads refused for keys outside the caller's prefix or not owned (cross=forbidden), and a prefix-bound listing returning only that tenant's objects (own=1). Source procedure: Inventory the bucket with mc du or rclone size. Not migrated automatically: MinIO bucket policies, versioning, replication, ILM rules and notifications are not migrated. Cutover: Switch the app's S3_* environment to the Ample bucket with a redeploy, verify reads and writes, keep MinIO read-only until confirmed. Rollback: keep the source untouched until you confirm; nothing at the source is changed or deleted by this guide.

Representative Queries

• Migrate MinIO bucket: Tenant-scoped object prefixes
• Where can I host Tenant-scoped object prefixes?
• I need a component-scoped export/import or reconfiguration procedure for Tenant-scoped object prefixes, with compatibility checks, verification and rollback.

Resource Requirements

• S3-compatible object storage

Workflow Steps

1. Inventory the source
   List what MinIO bucket provides beyond the component you are moving. Out of scope here: MinIO bucket policies, versioning, replication, ILM rules and notifications are not migrated.
2. Source step 1
   Inventory the bucket with mc du or rclone size.
3. Source step 2
   Copy objects with mc mirror or rclone sync from MinIO to the Ample bucket endpoint using the issued credentials (path-style).
4. Source step 3
   Verify a sample of objects by size and checksum after the copy.
5. Create the destination bucket and copy
   Create the bucket, copy with rclone or the S3 CLI in path-style mode using the issued credentials, then pass the credentials to the app as encrypted S3_* variables.
   Command: ample bucket create --name .
6. Validate before cutover
   Run the app's own checks and, for data, compare counts and checksums; the example checks are the pattern self-tests (/p/tenant-scoped-object-prefixes).
7. Cut over
   Switch the app's S3_* environment to the Ample bucket with a redeploy, verify reads and writes, keep MinIO read-only until confirmed.
8. Rollback
   Point DNS or configuration back to the source. The source was never modified; deletion is a separate, user-executed step after validation.

Examples

• Express pattern fixture (destination)
  Verified destination basis: tenant-scoped object prefixes.

Success Checks

• Destination app responds on its public URL.
• Tenant-scoped-object-prefixes check from the destination example.
• Data or object counts and checksums match the source.

Limitations

• Documentation only: nothing is executed automatically and no execution binding is offered.
• No full source-product parity is claimed: MinIO bucket policies, versioning, replication, ILM rules and notifications are not migrated.

Cost Estimate

• Currency: USD
• Monthly Amount: $5.00

Evidence Summary

• Destination side verified: The Express pattern fixture deployed on Ample and its checks passed (every tenant's objects stored under tenants// in a private bucket).

Last Verified At

• 2026-09-21T02:34:39Z

Next Actions

• Browse the catalog index.
• Search published recipes by intent, stack and constraints.
• Prepare a side-effect-free deployment plan for an authorized project.