During database migration, the destination AlloyDB for PostgreSQL database needs to connect to the source PostgreSQL database. Database Migration Service provides several ways to configure
this connectivity. The connectivity method you choose depends on the type of
source database, and whether it resides on-premises, in Google Cloud, or in another
cloud provider.
You can configure the following types of connectivity methods:
IP allowlists: Choose this method if you want to use public connectivity.
Reverse SSH tunnel using a cloud-hosted VM: Choose this method if you want to use secure connectivity, and when you don't have a Virtual Private Cloud (VPC) network in Google Cloud from which you can reach the source database.
VPC peering: Choose this method if you want to use private connectivity, and when you have a VPC network in Google Cloud from which you can reach the source database. Use VPC peering if you have a VPN or Cloud Interconnect connection set up in Google Cloud.
TCP Proxy via cloud-hosted VM: Choose this method when migrating from a Cloud SQL for PostgreSQL instance which is using the old producer network architecture.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-01 UTC."],[[["Database Migration Service requires the destination AlloyDB for PostgreSQL to connect to the source PostgreSQL database."],["The choice of connectivity method depends on the source database type and its location (on-premises, Google Cloud, or another cloud provider)."],["Connectivity options include public connectivity via IP allowlists, secure connectivity via a reverse SSH tunnel using a cloud-hosted VM, and private connectivity via VPC peering."],["TCP Proxy via a cloud-hosted VM is a connectivity option for migrating from a Cloud SQL for PostgreSQL instance with the old producer network architecture."]]],[]]
