Database Connection

1. From your Supabase Dashboard, select Connect in the top navigation bar:

• In the Direct connection section, copy the complete connection string (including the [YOUR-PASSWORD] placeholder)

• Paste the connection string into the PowerSync instance URI field. PowerSync will automatically parse this URI to populate the connection details.

• For the Password field, enter your database’s postgres user password (this is your database/project password, not your Supabase account password). Need help? Check Supabase’s guide on managing database passwords.

• Note: PowerSync includes Supabase’s CA certificate by default, so you can use verify-full SSL mode without additional configuration.

Your connection settings should look similar to this:

2. Verify your setup by clicking Test Connection and resolve any errors.

3. Click Next.

4. PowerSync will detect the Supabase connection and prompt you to enable Supabase auth. To enable it, copy your JWT Secret from the Supabase Dashboard’s API settings and paste it into the form:

5. Click Enable Supabase auth to finalize your connections settings.

PowerSync will now create an isolated cloud environment for your instance. This process typically takes a few minutes.

Troubleshooting

Supabase is configured with a maximum of 4 logical replication slots, with one often used for Supabase Realtime.

It is therefore easy to run out of replication slots, resulting in an error such as “All replication slots are in use” when deploying. To resolve this, delete inactive replication slots by running this query:

select slot_name, pg_drop_replication_slot(slot_name) from pg_replication_slots where active = false;

1. Locate the connection details from RDS:
   • Copy the “Endpoint” value.
   • Paste the endpoint into the “Host” field.
   • Complete the remaining fields: “Name”, “Host”, “Port”, “Database name”, “Username”, “Password” and “SSL Mode” are required. You can paste a connection string into the “URI” field to simplify this.
   • “Name” can be any name for the connection.
   • “Port” is 5432 for Postgres databases.
   • “Username” and “Password” maps to the powersync_role created in Source Database Setup.
   • PowerSync has the AWS RDS CA certificate pre-configured — verify-full SSL mode can be used directly, without any additional configuration required.
   • If you want to query your source database via the PowerSync dashboard, enable “Allow querying data from the dashboard?”.
2. Click “Test Connection” and fix any errors.
3. Click “Save”.

PowerSync deploys and configures an isolated cloud environment for you, which can take a few minutes to complete.

Troubleshooting

If you get an error such as “IPs in this range are not supported”, the instance is likely not configured to be publicly accessible. A DNS lookup on the host should give a public IP, and not for example 10.x.x.x or 172.31.x.x.

1. Fill in your connection details from Azure.
   1. “Name”, “Host”, “Port”, “Database name”, “Username”, “Password” and “SSL Mode” are required. You can also paste a connection string into the “URI” field to simplify data entry.
   2. “Name” can be any name for the connection.
   3. “Port” is 5432 for Postgres databases.
   4. “Username” and “Password” maps to the powersync_role created in Source Database Setup.
   5. PowerSync has the Azure CA certificate pre-configured — verify-full SSL mode can be used directly, without any additional configuration required.
   6. If you want to query your source database via the PowerSync dashboard, enable “Allow querying data from the dashboard?”.
2. Click “Test Connection” and fix any errors.
   • If you encounter the error "must be superuser or replication role to start walsender", ensure that you’ve followed all the steps for enabling logical replication documented here.
3. Click “Save”.

PowerSync deploys and configures an isolated cloud environment for you, which can take a few minutes to complete.

1. Fill in your connection details from Google Cloud SQL.
   • “Name”, “Host”, “Port”, “Database name”, “Username”, “Password” and “SSL Mode” are required. You can paste a connection string into the “URI” field to simplify data entry.
   • “Name” can be any name for the connection.
   • “Port” is 5432 for Postgres databases.
   • “Username” and “Password” maps to the powersync_role created in Source Database Setup.
   • The server certificate can be downloaded from Google Cloud SQL.
   • If SSL is enforced, a client certificate and key must also be created on Google Cloud SQL, and configured on the PowerSync instance.
   • If you want to query your source database via the PowerSync dashboard, enable “Allow querying data from the dashboard?”.
2. Click “Test Connection” and fix any errors.
3. Click “Save”.

PowerSync deploys and configures an isolated cloud environment for you, which can take a few minutes to complete.

1. Fill in your connection details from Neon.
   1. “Name”, “Host”, “Port”, “Database name”, “Username”, “Password” and “SSL Mode” are required. You can paste a connection string into the “URI” field to simplify data entry.
   2. “Name” can be any name for the connection.
   3. “Port” is 5432 for Postgres databases.
   4. “Username” and “Password” maps to the powersync_role created in Source Database Setup.
   5. Note that if you’re using a self-signed SSL certificate for your database server, click the “Download Certificate” button to dynamically fetch the recommended certificate directly from your server.
   6. Also note if you get any error such as server certificate not trusted: SELF_SIGNED_CERT_IN_CHAIN, click “Download Certificate” to attempt automatic resolution.
   7. If you want to query your source database via the PowerSync dashboard, enable “Allow querying data from the dashboard?”.
2. Click “Test Connection” and fix any errors.
3. Click “Save”.

PowerSync deploys and configures an isolated cloud environment for you, which can take a few minutes to complete.

1. Fill in your connection details from Fly Postgres.
   1. “Name”, “Host”, “Port”, “Database name”, “Username”, “Password” and “SSL Mode” are required. You can paste a connection string into the “URI” field to simplify data entry.
   2. “Name” can be any name for the connection.
   3. “Port” is 5432 for Postgres databases.
   4. “Username” and “Password” maps to the powersync_role created in Source Database Setup.
   5. Note that if you’re using a self-signed SSL certificate for your database server, click the “Download Certificate” button to dynamically fetch the recommended certificate directly from your server.
   6. Also note if you get any error such as server certificate not trusted: SELF_SIGNED_CERT_IN_CHAIN, click “Download Certificate” to attempt automatic resolution.
   7. If you want to query your source database via the PowerSync dashboard, enable “Allow querying data from the dashboard?”.
2. Click “Test Connection” and fix any errors.
3. Click “Save”.

PowerSync deploys and configures an isolated cloud environment for you, which can take a few minutes to complete.