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aws_rds_instances Resource

Use the aws_rds_instances InSpec audit resource to test properties of a collection of AWS RDS instances.

RDS gives you access to the capabilities of a MySQL, MariaDB, PostgreSQL, Microsoft SQL Server, Oracle, or Amazon Aurora database server.

RDS instances are compute instances used by the RDS service.

Install

This resource is available in the Chef InSpec AWS resource pack.

For information on configuring your AWS environment for Chef InSpec and creating an InSpec profile that uses the InSpec AWS resource pack, see the Chef InSpec documentation on the AWS cloud platform.

Syntax

Ensure you have exactly 3 instances

describe aws_rds_instances do
  its('db_instance_identifiers.count') { should cmp 3 }
end

Parameters

This resource does not require any parameters.

Properties

db_instance_identifiers
The unique IDs of the RDS Instances returned.
db_instance_classes
The list of the name of the compute and memory capacity class of the DB instances.
db_security_groups
A list of DB security group elements containing DBSecurityGroup.Name and DBSecurityGroup.Status subelements.
vpc_security_groups
Provides a list of VPC security group elements that the DB instance belongs to.
entries
Provides access to the raw results of the query, which can be treated as an array of hashes.

See the AWS RDS DBInstance API documentation for more information.

Examples

Ensure a specific instance exists.

describe aws_rds_instances do
  its('db_instance_identifiers') { should include 'rds-12345678' }
end

Use the InSpec resource to request the IDs of all RDS instances, then test in-depth using aws_rds_instance to ensure all instances are encrypted and have a sensible size.

aws_rds_instances.db_instance_identifiers.each do |db_instance_identifier|
  describe aws_rds_instance(db_instance_identifier) do
    it { should be_encrypted }
  end
end

Matchers

For a full list of available matchers, see our Universal Matchers page.

This resource has the following special matchers.

exist

The control will pass if the describe returns at least one result.

Use should_not to test the entity should not exist.

describe aws_rds_instances do
  it { should exist }
end
describe aws_rds_instances do
  it { should_not exist }
end

AWS Permissions

Your Principal will need the RDS:Client:DBInstanceMessage action with Effect set to Allow.

You can find detailed documentation at Actions, Resources, and Condition Keys for Amazon EC2, and Actions, Resources, and Condition Keys for Identity And Access Management.

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