page:migrate:amazon rds for postgresql:multi tenant relational data

Migrate Amazon RDS for PostgreSQL: Multi-tenant relational data

Move PostgreSQL data from Amazon RDS for PostgreSQL to Ample, one component at a time. Destination verified on Ample: a tenant column on every row and query, with a cross-tenant read returning nothing (tenant_isolation=ok). Source procedure: Take a logical backup with pg_dump -Fc from a network location that can reach the instance. Not migrated automatically: Multi-AZ failover, read replicas, IAM authentication, PITR and Performance Insights have no equivalent on the managed database. Cutover: Freeze writes at the source with the user's go-ahead, take the final dump, restore, validate, redeploy with the managed DATABASE_URL, keep RDS until confirmed. Rollback: keep the source untouched until you confirm; nothing at the source is changed or deleted by this guide.

Representative Queries

• Migrate Amazon RDS for PostgreSQL: Multi-tenant relational data
• Where can I host Multi-tenant relational data?
• I need a component-scoped export/import or reconfiguration procedure for Multi-tenant relational data, with compatibility checks, verification and rollback.

Resource Requirements

• Primitive: postgres

Infrastructure Requirements

• Postgres: Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.

Migration Source

• Amazon RDS for PostgreSQL

Prerequisites

1. Authorized access to the Amazon RDS for PostgreSQL source and its export tooling
2. An inventory of every component in scope and out of scope
3. A validated backup or copy before any cutover
4. An Ample account token with servers:write, databases:read

Workflow Steps

1. Inventory the source: List what Amazon RDS for PostgreSQL provides beyond the component you are moving. Out of scope here: Multi-AZ failover, read replicas, IAM authentication, PITR and Performance Insights have no equivalent on the managed database.
2. Source step 1: Take a logical backup with pg_dump -Fc from a network location that can reach the instance.
3. Source step 2: Check the engine major version, extensions and parameter-group settings the app depends on.
4. Source step 3: Restore into a scratch managed database first and compare row counts.
5. Provision and restore: Deploy the app once so a managed PostgreSQL 16 database exists (or create one with ample database create --engine postgres), then restore the dump with pg_restore using its connection string; keep migrations idempotent.
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/multi-tenant-relational-data).
7. Cut over: Freeze writes at the source with the user's go-ahead, take the final dump, restore, validate, redeploy with the managed DATABASE_URL, keep RDS 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: multi-tenant relational data.

Success Checks

• Destination app responds on its public URL (HTTP GET /).
• Multi-tenant-relational-data check from the destination example (HTTP GET /p/multi-tenant-relational-data).
• Data or object counts and checksums match the source (manual check).

Limitations

• Documentation only: nothing is executed automatically and no execution binding is offered.
• The source-side procedure is documented from Amazon RDS for PostgreSQL'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: Multi-AZ failover, read replicas, IAM authentication, PITR and Performance Insights have no equivalent on the managed database.
• Verified on the node-22 template at s-1vcpu-1gb; region, compliance and request-duration limits are unknown.

Cost Estimate

• Currency: USD
• Monthly Amount: 10.0
• Components:
  • App server (s-1vcpu-1gb): 1.0 ($5.00)
  • Managed PostgreSQL database (s-1vcpu-1gb): 1.0 ($5.00)
• Note: Destination always-on monthly price of the tested sizes; apps auto-pause when idle. Source costs are unknown to Ample.

Evidence Summary

• Kind: canary_run
• Summary: Destination side verified: the Express pattern fixture deployed on Ample and its checks passed (a tenant column on every row and query, with a cross-tenant read returning nothing). The source-side export from Amazon RDS for PostgreSQL is documented from the vendor's standard tooling and was not executed by this catalog's evidence.

Next Actions

• Browse the catalog index: GET /v1/catalog
• Search published recipes by intent, stack and constraints: POST /v1/catalog/search
• Prepare a side-effect-free deployment plan for an authorized project: POST /v1/catalog/plan
• Read the existing agent authentication setup: GET /mcp/setup
• Browse Amazon RDS for PostgreSQL: GET /v1/catalog/nodes/migration%3Aamazon-rds-for-postgresql
• Browse Multi-tenant relational data: GET /v1/catalog/nodes/pattern%3Amulti-tenant-relational-data
• Browse Migrate Postgres: GET /v1/catalog/nodes/intent%3Amigrate-postgres

Last Verified At

• 2026-09-21T02:34:39Z