Step 2: Configuring Networking and Google Cloud SQL PostgreSQL Permissions
This guide considers that you already have a Google Cloud SQL PostgreSQL instance setup. If not you can read how to setup a Google Cloud SQL PostgreSQL data warehouse.
Permissioning Blendo: In order to ensure Blendo will have access to your PostgreSQL please make sure to whitelist and allow connection from the following IP addresses: 52.18.126.160/32, and 52.213.36.20/32
For more instructions please continue below.
1. Find your instance in the CloudSQL Instances page and click on it.
2. Click on Authorization tab.

3. Click Add Network.
4. Give a name and add one by one these IP addresses: 52.18.126.160/32, and 52.213.36.20/32

3. Click Save.
If you encounter an error, ensure that your current IP address is in the Allowed IP List and try again.