aws_elb Resource

Use the aws_elb InSpec audit resource to test properties of a single AWS Elastic Load Balancer (ELB).

For additional information, including details on parameters and properties, see the AWS documentation on Elastic Load Balancing.

Installation

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

See the Chef InSpec documentation on cloud platforms for information on configuring your AWS environment for InSpec and creating an InSpec profile that uses the InSpec AWS resource pack.

Syntax

An aws_elb resource block declares the tests for a single AWS ELB by ELB name. AWS ELB Names are unique per region.

describe aws_elb('my-elb') do
  it { should exist }
end

describe aws_elb(load_balancer_name: 'my-elb') do
  it { should exist }
end

Parameters

load_balancer_name (required): This resource accepts a single parameter, the ELB Name which uniquely identifies the ELB. This can be passed either as a string or as a load_balancer_name: 'value' key-value entry in a hash.

Properties

load_balancer_name: The name of the load balancer.
dns_name: The DNS name of the load balancer.
availability_zones: The Availability Zones for the load balancer.
instance_ids: An array containing all instance ids associated with the ELB.
external_ports: An array of the external ports exposed on the ELB.
internal_ports: An array of the internal ports exposed on the ELB.
security_group_ids: The security groups for the load balancer. Valid only for load balancers in a VPC.
vpc_id: The ID of the VPC for the load balancer.
subnet_ids: The IDs of the subnets for the load balancer.
listeners: A collection of the listeners for the load balancer.
ssl_policies: A collection of the SSL Policies configured in-use for the load balancer (and their policy attributes).
protocols: A list of the protocols configured for the listeners of the load balancer.
cross_zone_load_balancing_enabled?: The cross-zone load balancing status for ELB.
access_log_enabled?: The access log status for ELB.
certificate_id: A list of SSL certificate IDs configured for the listeners of the load balancer.

Examples

Test that cross-zone load balancing for ELB is enabled.

describe aws_elb('prod_web_app_elb') do
  it { should be_cross_zone_load_balancing_enabled }
end

Test that access logs for ELB are enabled.

describe aws_elb('prod_web_app_elb') do
  it { should be_access_log_enabled }
end

Test that an ELB has its availability zones configured correctly.

describe aws_elb('prod_web_app_elb') do
  its('availability_zones.count') { should be > 1 }
  its('availability_zones')       { should include 'us-east-2a' }
  its('availability_zones')       { should include 'us-east-2b' }
end

Ensure an ELB has the correct number of EC2 Instances associated with it.

describe aws_elb('prod_web_app_elb') do
  its('instance_ids.count') { should cmp 3 }
end

Ensure the correct DNS is set .

describe aws_elb('prod_web_app_elb') do
  its('dns_name') { should cmp 'your-fqdn.com' }
end

Ensure we only expose port 80, both to the public and internal.

describe aws_elb('prod_web_app_elb') do
  its('external_ports.count') { should cmp 1 }
  its('external_ports')       { should include 80 }
  its('internal_ports.count') { should cmp 1 }
  its('internal_ports')       { should include 80 }
end

Ensure the correct EC2 Instances are associated.

describe aws_elb('prod_web_app_elb') do
  its('instance_ids') { should include 'i-12345678' }
end

Matchers

This InSpec audit resource has no special matchers. For a full list of available matchers, please visit our Universal Matchers page.

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_elb('AnExistingELB') do
  it { should exist }
end

describe aws_elb('ANonExistentELB') do
  it { should_not exist }
end

AWS Permissions

Your Principal will need the ElasticLoadBalancing:Client:DescribeAccessPointsOutput action with Effect set to Allow.

You can find detailed documentation at Authentication and Access Control for Your Load Balancers