Migrate Amazon S3 bucket: Bulk import staging | Ample

INFRASTRUCTURE

S3-compatible object storage: verified (Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified.)

Inventory the source
List what Amazon S3 bucket provides beyond the component you are moving. Out of scope here: Bucket policies, IAM conditions, lifecycle rules, versioning, replication and event notifications are not migrated; only PutObject and GetObject are verified on Ample.
Source step 1
Inventory the bucket (object count, total size, prefixes, largest objects) with aws s3 ls --recursive --summarize
Source step 2
Copy objects with rclone sync or aws s3 sync from the S3 bucket to the Ample bucket endpoint using the issued credentials (path-style)
Source step 3
Verify a sample of objects by size and checksum after the copy
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.
```
ample bucket create --name <bucket-name>  
```
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/bulk-import-staging).
Cut over
Switch the app's S3_* environment to the Ample bucket with a redeploy, verify reads and writes, keep the source bucket read-only until confirmed.
Rollback
Point DNS or configuration back to the source. The source was never modified; deletion is a separate, user-executed step after validation.

Express pattern fixture (destination) (tests/deploy-canaries/express-patterns): Verified destination basis: bulk import staging.

destination app responds on its public URL (/ on the live URL, expect ample canary express patterns)
bulk-import-staging check from the destination example (/p/bulk-import-staging on the live URL, expect see the pattern fixture checks)
data or object counts and checksums match the source

Documentation only: nothing is executed automatically and no execution binding is offered.
The source-side procedure is documented from Amazon S3 bucket's standard tooling and was not executed in this catalog's evidence; the destination side was verified with the pattern fixture.
No full source-product parity is claimed: Bucket policies, IAM conditions, lifecycle rules, versioning, replication and event notifications are not migrated; only PutObject and GetObject are verified on Ample.
Verified on the node-22 template at s-1vcpu-1gb; region, compliance and request-duration limits are unknown.
PutObject and GetObject with path-style addressing are verified; bulk copy tooling and other S3 operations are not.

Estimated 5.00 USD per month (size prices from pricing.toml at build revision a1b8c38919e59cd035ebabaced73cf84ece24371).

Destination always-on monthly price of the tested sizes; apps auto-pause when idle. Source costs are unknown to Ample.

canary_run on 2026-09-21T02:34:39Z at revision 1d28ae0-dirty (CLI 0.1.21): Destination side verified: the Express pattern fixture deployed on Ample (npm install, npm run build --if-present, npm run start on the node-22 template) and its checks passed (a CSV staged as an object, row-level validation with per-row errors recorded, and a restart-safe import keyed by import id (imported=2 rejected=1 restart=ok)). The source-side export from Amazon S3 bucket is documented from the vendor's standard tooling and was not executed by this catalog's evidence. (expires 2027-03-20T02:34:39Z)

No execution binding. This recipe is documentation only; nothing is executed automatically.