During database migration, the destination Cloud SQL database needs to connect
to the source 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.
There are three types of connectivity methods that you can configure:
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.
[[["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 2025-04-03 UTC."],[[["Database Migration Service requires the destination Cloud SQL database to connect to the source database."],["The chosen connectivity method depends on the source database's type and location (on-premises, Google Cloud, or another cloud provider)."],["Connectivity options include IP allowlists for public access, reverse SSH tunnels for secure access without a VPC, and VPC peering for private access with a VPC."],["VPC peering is recommended when a VPN or Cloud Interconnect connection is already established in Google Cloud."]]],[]]
