TLS

Hydra is secured with end-to-end encryption with publicly-trusted certificates.

Hydra has publicly-trusted certificates from Let's Encrypt allowing you to connect safety to your data warehouse from anywhere on the Internet. To validate the certificate, you must use sslmode=verify-full when connecting and configure your Postgres connection to read your public certificate bundle.

If you are unable to configure your Postgres connection, we recommend using sslmode=require.

psql

Locate your root certificate bundle

To configure psql, you will need to know the location of your root certificate bundle. On most systems, this file is located at /etc/ssl/cert.pem.

If the file is not located in /etc/ssl, you can use curl -v to a secure URL and look for the CAfile line:

$ curl -v https://hydras.io/ 2>&1 | grep -i CAfile
*  CAfile: /etc/ssl/cert.pem

Add sslrootcert to the connection string

The simplest option is to add the file to the end of the connection string using the parameter sslrootcert, as follows:

psql "postgres://.../d123456?sslmode=verify-full&sslrootcert=/etc/ssl/cert.pem"

Add Hydra to the service file

You can manage and save your Hydra connection by creating an entry in your service file, located at ~/.pg_service.conf.

[hydra]
user=u123456
password=UdW3zJT9FLfIpJrli47HMmL1
host=1ed22fba-b20a-6680-afd9-91fc7c62485e.us-east-1.aws.hydradb.io
port=5432
dbname=d123456
sslmode=verify-full
sslrootcert=/etc/ssl/cert.pem

Once you have added this entry, connect to your data warehouse using the name you specified at the top of block:

psql service=hydra

Any additional parameters will override your service entry. For example, you can use psql service=hydra dbname=postgres to connect to the postgres database.

Always validate certificates

⚠️ If you choose this path, psql will try to validate certificates when connecting to any Postgres database. This will cause connections to some other Postgres databases to return an error, even if you set sslmode.

You can instruct psql to always read your public certificate bundle my symlinking ~/.postgresql/root.crt to your public root cert bundle:

mkdir -p ~/.postgresql
ln -s /etc/ssl/cert.pem ~/.postgres/root.crt

From Your Application

You should refer to your application's Postgres library, but many libraries use libpq behind the scenes. You can configure libpq to read your cert bundle using the PGSSLROOTCERT environment variable. For example, add this environment variable to your application's environment:

PGSSLROOTCERT=/etc/ssl/cert.pem

Please double check the location of your CA cert bundle in your production environment.