<p>What's the best/easier way to connect an AWS RDS instance to my kubernetes cluster running on gcloud?</p>

<p>Likely the only way there is, is using their <code>public availability</code> option upon creating the instance. That really is just fine. You will get a DNS hostname that also powers their loadbalancing feature.</p>

<p>Note, their are similar question for connection within AWS, which report DNS problems, that do not apply in your case Ref: <a href="https://stackoverflow.com/questions/40277075/accessing-postgres-rds-from-kubernetes-cluster-in-aws">Accessing Postgres RDS from Kubernetes cluster in AWS</a></p>
