Securing database access on Google Cloud Platform for Databricks is not about toggling a few settings. It’s about building a layered access control model that is tight, auditable, and ready to block the wrong request before it touches your data.
The first step is understanding identity paths. Every service account, user account, and workload identity in GCP must be mapped to the least privilege needed for the Databricks cluster or job. Strip out primitive roles. Rely on granular IAM permissions targeted at database resources.
The second step is controlling the network surface. Use VPC Service Controls, private endpoints, and firewall rules to ensure Databricks clusters can only connect to your database through approved routes. This makes man-in-the-middle attacks far harder and stops accidental exposure to public IP ranges.
Third, enforce strong authentication between Databricks and your database. Integrate Databricks secrets with GCP Secret Manager so credentials never appear in plain text. Rotate these secrets regularly and automate the process to avoid downtime.