Overview

• Isolake is an isolated Databricks environment with scoped-down policies, no non-Databricks or non-AWS outbound connectivity, enterprise security Databricks features (e.g. PrivateLink, CMK, audit logs etc.),and optionally only accessible through an AWS AppStream instance.

---

Disclaimer

This Terraform code is provided as a sample for reference and testing purposes only. Please review and modify the code according to your needs before using it in your test environment.

NOTE: The practice of passing credentials through Terraform input variables is intended solely for rapid testing purposes.

• It should NOT be implemented in production ennvironment or any other higher-level environments.
• For enhanced security, it is recommended to use more secure methods like AWS Secret Manager or environment-specific secrets for storing credentials.

---

Architecture

---

Version Requirements

Name	Version
databricks	1.27.0

Inputs - Main "Isolake" Module

Name	Description	Type	Default	Required
aws_account_id	AWS account ID for integration	string	n/a	yes
client_id	Databricks client ID for OAuth	string	n/a	yes
client_secret	Databricks client secret for OAuth	string	n/a	yes
databricks_account_id	Databricks account ID	string	n/a	yes
region	AWS region for resource deployment	string	n/a	yes
resource_owner	Owner of the resources for tracking and management	string	n/a	yes
resource_prefix	Prefix for naming created resources	string	n/a	yes

Sub Modules

Name	Source	Version
audit	./audit	n/a
databricks_cluster	./cluster	n/a
databricks_mws_workspace	./workspace	n/a
lockdown_access	./lockdown/access	n/a
lockdown_data_bucket	./lockdown/data_bucket	n/a
lockdown_dbfs	./lockdown/dbfs	n/a
lockdown_nacls	./lockdown/nacls	n/a
uc_data	./uc_data	n/a
uc_init	./uc_init	n/a
uc_assignment	./uc_assignment	n/a
vpc	terraform-aws-modules/vpc/aws	5.1.1
vpc_endpoints	terraform-aws-modules/vpc/aws//modules/vpc-endpoints	3.11.0

Inputs - Sub Modules

Name	Description	Type	Default	Required
aws_account_id	AWS account ID for integration	string	n/a	yes
client_id	Databricks client ID for OAuth	string	n/a	yes
client_secret	Databricks client secret for OAuth	string	n/a	yes
control_plane_ip	IP for Databricks control plane	string	n/a	yes
data_access	Name of the user or entity that will be given read access to the data in UC	string	n/a	yes
data_bucket	Name of the existing data bucket	string	n/a	yes
databricks_account_id	Databricks account ID	string	n/a	yes
dbfsname	S3 bucket name for the workspace root storage	string	n/a	yes
enable_cluster_example	Flag to enable example cluster with Derby Metastore	bool	n/a	yes
enable_dbfs_lockdown	Lockdown on workspace root bucket	bool	n/a	yes
enable_front_end_lockdown	Flag to enable frontend lockdown	bool	n/a	yes
enable_nacl_lockdown	Lockdown on private subnet NACLs	bool	n/a	yes
enable_read_only_data_bucket_lockdown	Read-only lockdown on data bucket	bool	n/a	yes
full_region_name	Full name of the region for restrictive DBFS bucket policies	string	n/a	yes
private_subnets_cidr	CIDR blocks for private subnets	list(string)	n/a	yes
region	AWS region for resource deployment	string	n/a	yes
region_name	Short name of the region	string	n/a	yes
relay_vpce_service	VPCE service for relay	string	n/a	yes
resource_owner	Owner of the resources for tracking and management	string	n/a	yes
resource_prefix	Prefix for naming created resources	string	n/a	yes
restricted_uc_bucket_policy	Restrictive policy on Unity Catalog bucket	bool	n/a	yes
sg_egress_protocol	Allowed protocols for within security group egress	list(string)	n/a	yes
sg_ingress_protocol	Allowed protocols for within security group ingress	list(string)	n/a	yes
system_arn	System ARN for bucket policies	string	n/a	yes
system_ip	System IP for administrative access and bucket policies	string	n/a	yes
ucname	S3 bucket name for the Unity Catalog (UC) metastore	string	n/a	yes
vpc_cidr_range	CIDR range for the VPC	string	n/a	yes
workspace_vpce_service	VPCE service for workspace	string	n/a	yes
ws_ld_availability_zones	Availability zone for AppStream	list(string)	n/a	yes
ws_ld_private_subnets_cidr	CIDR for AppStream private subnets	list(string)	n/a	yes
ws_ld_vpc_cidr_range	CIDR range for AppStream VPC	string	n/a	yes

---

Bug Fixes or Feature Requests

• Please raise a GitHub Issue with bug fixes or proposed feature requests for the Isolake deployment design.