Prerequisites

• A Couchbase cluster with TLS enabled. Capella clusters are secured with TLS 1.2 out of the box.
• A Node.js Project using Couchbase (see our other Node.js-based tutorials to get started!)
• Code Editor
• A root certificate for your cluster. For Capella clusters, this can be found at the bottom of the ‘Connect’ tab for a given cluster.

Different Authentication Methods

We can authenticate a Couchbase connection in a variety of different ways.

Basic Username/Password Authentication

This authentication method commonly used for locally hosted development clusters. It’s the easiest method for getting started quickly, but its also not very secure. The benefit of using basic authentication is that there is no additional TLS configuration required when setting up your local Couchbase cluster.

var cluster = await couchbase.connect('couchbase://localhost', {
  username: 'Administrator',
  password: 'password',
})

Note that this connection string begins with couchbase://, denoting a non-TLS connection (think http://).

TLS Authentication without certificate checking

In certain situations, such as when using Capella, TLS is required. To circumvent the need to download a certificate, the parameter ?tls_verify=none can be passed with the connection string to ignore mismatched certificates.

const cluster = await couchbase.connect('couchbases://'+ endpoint +'?tls_verify=none', {
  username: 'Administrator',
  password: 'password'
});

Note that this connection string begins with couchbases://, with the ‘s’ denoting a TLS-secured connection (think https://). This is a great way of connecting for development purposes, but it’s important to understand that this method is not recommended for use in production.

TLS Authentication with proper certificate checking

To properly secure our connection, we’ll remove the ?tls_verify=none parameter and instead add a Sicherheit object that contains a trustStorePath string that locates the root certificate file.

const cluster = await couchbase.connect('couchbases://'+ endpoint, {
  username: 'Administrator',
  password: 'password',
  security: {
    trustStorePath: "/path/to/root/certificate.pem"
  }
});

Note that we’re still using couchbases:// here. You’ll have to download the root certificate file(s). In Capella, this is located at the bottom of the ‘Connect’ tab for a given cluster.

Schlussfolgerung

Hopefully this brief tutorial has shed some light on the various authentication methods you can use with Couchbase. You can always read more in the documentation.

The purpose of this tutorial is to help developers switch from basic authentication and/or ignoring TLS certificates for development to a properly encrypted connection for use in production. This is a really important step to ensuring your application is safe from bad actors!