compliance.tf
Terraform Modules for AWSDatabases, Caching & Analytics

Terraform AWS OpenSearch

OpenSearch domains with VPC placement, encryption at rest, node to node encryption, fine grained access control, audit logs, TLS enforcement, and snapshot configuration.

Controls enforced

These compliance controls are checked at terraform plan time.

Quick start

module "opensearch" {
  source  = "awswellarchitected.compliance.tf/terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"

  # ... your arguments here
}
module "opensearch" {
  source  = "iso27001.compliance.tf/terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"

  # ... your arguments here
}
module "opensearch" {
  source  = "pcidss.compliance.tf/terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"

  # ... your arguments here
}
module "opensearch" {
  source  = "cfrpart11.compliance.tf/terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"

  # ... your arguments here
}
module "opensearch" {
  source  = "nydfs23.compliance.tf/terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"

  # ... your arguments here
}
module "opensearch" {
  source  = "rbicybersecurity.compliance.tf/terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"

  # ... your arguments here
}
module "opensearch" {
  source  = "hipaa.compliance.tf/terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"

  # ... your arguments here
}
module "opensearch" {
  source  = "nistcsf.compliance.tf/terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"

  # ... your arguments here
}

View this module on the compliance.tf registry — versions, inputs, and outputs →

See the Get Started guide and Registry Endpoints for details on how to customize the module for your requirements.

Migration from upstream

Already using terraform-aws-modules? Change only the source URL:

module "opensearch" {
  source  = "terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"
}
module "opensearch" {
  source  = "soc2.compliance.tf/terraform-aws-modules/opensearch/aws"
  version = ">= 2.0.0, < 3.0.0"
}

Same arguments. Same outputs. Controls are checked at terraform plan. See the Migration Guide for step-by-step instructions.

Reversibility

No lock-in. Switch back by reverting the source URL:

module "opensearch" {
  source  = "terraform-aws-modules/opensearch/aws"
}

Run terraform init -upgrade. Terraform state is unchanged — same resource addresses, same provider, no compliance.tf-specific resources. Controls you already applied remain in AWS.

Mapped compliance frameworks

A.8.14 Redundancy of information processing facilities

A.8.3 Information access restriction

1.2.5: Network security controls (NSCs) are configured and maintained.

10.5.1: Retain audit log history for at least 12 months, with at least the most recent three months immediately available for analysis

10.6.3: Time-synchronization mechanisms support consistent time settings across all systems.

2.2.5: System components cannot be compromised by exploiting insecure services, protocols, or daemons

2.2.7: System components are configured and managed securely.

3.5.1: Primary account number (PAN) is secured wherever it is stored.

4.2.1.1: An inventory of the entity's trusted keys and certificates used to protect PAN during transmission is maintained

4.2.1: PAN is protected with strong cryptography during transmission.

5.3.4: Anti-malware mechanisms and processes are active, maintained, and monitored.

7.2.1: Access to system components and data is appropriately defined and assigned.

7.2.2: Access to system components and data is appropriately defined and assigned.

7.2.5: Access to system components and data is appropriately defined and assigned.

7.2.6: Access to system components and data is appropriately defined and assigned.

7.3.1: Access to system components and data is managed via an access control system(s).

7.3.2: Access to system components and data is managed via an access control system(s).

7.3.3: Access to system components and data is managed via an access control system(s).

8.2.7: User identification and related accounts for users and administrators are strictly managed throughout an accounts lifecycle.

8.2.8: If a user session has been idle for more than 15 minutes, the user is required to re-authenticate to re-activate the terminal or session

8.3.2: Strong cryptography is used to render all authentication factors unreadable during transmission and storage on all system components

8.3.4: Strong authentication for users and administrators is established and managed.

11.10(e) Use of secure, computer-generated, time-stamped audit trails to independently record the date and time of operator entries and actions that create, modify, or delete electronic records

11.10(g) Use of authority checks to ensure that only authorized individuals can use the system, electronically sign a record, access the operation or computer system input or output device, alter a record, or perform the operation at hand

500.07 Access Privileges and Management

164.312(a)(1) Access control

164.312(a)(2)(iv) Encryption and decryption

164.314(b)(2)(iv): Organizational Requirements

Framework coverage

Which controls from this module are active under each framework endpoint.

ControlPCI DSS v4.0HIPAA Omnibus Rule 2013
Elasticsearch domain error logging to CloudWatch Logs should be enabled○○
OpenSearch domains should have audit logging enabled●○
OpenSearch domains should have Cognito authentication enabled for Kibana○○
OpenSearch domains should have at least three data nodes○○
OpenSearch domains should have encryption at rest enabled●●
OpenSearch domains should have fine-grained access control enabled●○
OpenSearch domains should use HTTPS○●
OpenSearch domains should be in a VPC○●
OpenSearch domains internal user database should be disabled○○
OpenSearch domains should have logging to CloudWatch Logs enabled●○
OpenSearch domains node-to-node encryption should be enabled●●

● enforced by default · ○ not activated by this endpoint

ElastiCache

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