ec2-instance-multiple-eni-check

Checks if Amazon Elastic Compute Cloud (Amazon EC2) uses multiple Elastic Network Interfaces (ENIs) or Elastic Fabric Adapters (EFAs). The rule is NON_COMPLIANT an Amazon EC2 instance use multiple network interfaces.

Identifier: EC2_INSTANCE_MULTIPLE_ENI_CHECK

Resource Types: AWS::EC2::Instance

Trigger type: Configuration changes

AWS Region: All supported AWS regions except Asia Pacific (Osaka), AWS GovCloud (US-East), AWS GovCloud (US-West) Region

Parameters:

NetworkInterfaceIds (Optional)

Type: CSV

Comma-separated list of network instance IDs

Proactive Evaluation

For steps on how to run this rule in proactive mode, see Evaluating Your Resources with AWS Config Rules. For this rule to return COMPLIANT in proactive mode, the resource configuration schema for the StartResourceEvaluation API needs to include the following inputs, encoded as a string:

"ResourceConfiguration":
...
{
   "NetworkInterfaces": "[NetworkInterfaceId-1, NetworkInterfaceId-2, NetworkInterfaceId-3, ...]"
} 
...

For more information on proactive evaluation, see Evaluation Mode.

AWS CloudFormation template

To create AWS Config managed rules with AWS CloudFormation templates, see Creating AWS Config Managed Rules With AWS CloudFormation Templates.