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Connecting to PlanetScale privately on AWS

When your compliance mandates that your connections do not route through the public Internet, PlanetScale provides private connection endpoints to AWS regions via AWS PrivateLink. AWS PrivateLink is a form of VPC peering that does not send your traffic over the public internet. Private connections are included on Scaler Pro plans. There is no additional charge on PlanetScale's end, but this may impact your AWS bill.

Below is a list of instructions to set up your Virtual Private Cloud (VPC) to utilize a VPC endpoint when communicating with PlanetScale databases.

Establishing a VPC endpoint

  1. Identify the AWS region that your VPC lives in, which we will refer to as <aws-region> for the rest of this document.

  2. Navigate to the "Endpoints" section on the VPC page and select "Create Endpoint."

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  1. Select "Other endpoint services" and fill the Service Name text box according to which region you want to establish AWS PrivateLink for:

find_service

AWS Region NameAWS RegionVPC Endpoint Service Name
US East (Ohio)us-east-2com.amazonaws.vpce.us-east-2.vpce-svc-069f88c102c1a7fba
US East (N. Virginia)us-east-1com.amazonaws.vpce.us-east-1.vpce-svc-02fef31be60d3fd35
US West (Oregon)us-west-2com.amazonaws.vpce.us-west-2.vpce-svc-0f63a383cb2d41919
Asia Pacific (Mumbai)ap-south-1com.amazonaws.vpce.ap-south-1.vpce-svc-06556ed2371c5fdd2
Asia Pacific (Singapore)ap-southeast-1com.amazonaws.vpce.ap-southeast-1.vpce-svc-046d8feae38660302
Asia Pacific (Sydney)ap-southeast-2com.amazonaws.vpce.ap-southeast-2.vpce-svc-03e5578eeaf446c90
Asia Pacific (Tokyo)ap-northeast-1com.amazonaws.vpce.ap-northeast-1.vpce-svc-099c246fa320e54d1
Europe (Frankfurt)eu-central-1com.amazonaws.vpce.eu-central-1.vpce-svc-091260498e58d4dc3
Europe (Ireland)eu-west-1com.amazonaws.vpce.eu-west-1.vpce-svc-049577caa775e8648
Europe (London)eu-west-2com.amazonaws.vpce.eu-west-2.vpce-svc-0f69e183c9a555f03
South America (São Paulo)sa-east-1com.amazonaws.vpce.sa-east-1.vpce-svc-09b11604d399b5c58
  1. Once you have filled in the Service Name text box, click "Verify service".

find_service

  1. Choose the VPC and subnets that should be peered with the PlanetScale service endpoint.

  2. Click the "Additional settings" dropdown arrow to reveal the "DNS name" configuration, and select the "Enable DNS name" checkbox.

  3. Choose the security group of your choice to control what can send traffic to the PlanetScale service endpoint.

  4. Click "Create endpoint" and verify that the VPC endpoint's status reports "Available" after a few minutes.

Verifying the connectivity of your VPC endpoint

  1. In the AWS UI, confirm that the endpoint has successfully been created by verifying that the Status section of the endpoint reads "Available".

Warning

Some PlanetScale regions are named differently than AWS Provider regions. We will refer to the PlanetScale region as <planetscale-region> for the rest of this document.

  1. Confirm that the Private DNS Names reads: <planetscale-region>.private-connect.psdb.cloud.

  2. Log into any EC2 instance in the configured VPC and run dig +short <planetscale-region>.private-connect.psdb.cloud to confirm that DNS resolution is producing IP Addresses in the range of your VPC's CIDR.

dig +short us-east.private-connect.psdb.cloud
172.31.16.197
172.31.13.7
  1. Run curl https://<planetscale-region>.private-connect.psdb.cloud to verify your connectivity. A successful response will yield Welcome to PlanetScale.
curl https://us-east.private-connect.psdb.cloud
Welcome to PlanetScale.

Modifying your Connection Strings to utilize your VPC endpoint.

By default, PlanetScale provides users with a connection string that reads <planetscale-region>.connect.psdb.cloud.

To utilize your newly configured VPC endpoint, prepend private- to the connect subdomain as shown above, yielding a connection string that reads <planetscale-region>.private-connect.psdb.cloud.

With this configured, you can leverage VPC peering to communicate between your AWS account and PlanetScale.

Need help?

Get help from the PlanetScale Support team, or join our GitHub discussion board to see how others are using PlanetScale.