Can I Access an RDS for MariaDB Instance over an Intranet Connection Across Regions?
By default, RDS DB instances cannot be accessed over an intranet across regions. Cloud services in different regions cannot communicate with each other over an intranet. You can use EIP, Cloud Connect (CC), or Virtual Private Network (VPN) to connect to RDS instances across regions.
- You can access RDS instances across regions using EIP. For details, see Using MySQL CLI to Connect to an Instance Through a Public Network.
- Cloud Connect allows you to connect two VPCs in the same account or in different accounts even if they are in different regions. For details, see Using a Cloud Connection to Connect VPCs in the Same Account But Different Regions.
- VPN uses an encrypted tunnel to connect VPCs in different regions and sends traffic over the Internet. It is inexpensive, easy to configure, and easy to use. However, the quality of VPN connections depends on the quality of your Internet connection. For details, see Connecting an On-Premises Data Center to a VPC Through a VPN.
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