Cis AWS Compute 3.11

Ensure Amazon ECS clusters are tagged

Description

Ensure all Amazon ECS clusters have resource tags to facilitate asset management, tracking, and compliance.

Rationale

Consistent tagging supports compliance and helps identify unauthorized or misconfigured resources.

Impact

There is minimal administrative overhead associated with implementing and maintaining resource tags.

Audit Procedure

Using AWS Console

1. Login to the ECS console using https://console.aws.amazon.com/ecs/.
2. In the left panel, click Clusters.
3. Click the name of a cluster.
4. Click Tags.
5. Ensure at least one tag is listed that does not begin with aws:. Tags prefixed with aws: are AWS-managed.
6. Repeat steps 1-5 for each ECS cluster.

Using AWS CLI

Run the following command to list clusters:

aws ecs list-clusters

Run the following command to view the tags for a cluster:

aws ecs list-tags-for-resource --resource-arn <service-arn>

Ensure that tags are returned that do not begin with aws:. Tags prefixed with aws: are AWS-managed. Repeat for each cluster.

Expected Result

All ECS clusters should have at least one user-defined tag (not prefixed with aws:).

Remediation

Using AWS Console

1. Login to the ECS console using https://console.aws.amazon.com/ecs/.
2. In the left panel, click Clusters.
3. Click the name of a cluster.
4. Click Tags.
5. Click Manage tags.
6. Click Add tag.
7. Provide a Key and optional Value for the tag.
8. Click Save.
9. Repeat steps 1-8 for each ECS cluster requiring remediation.

Using AWS CLI

Use the aws ecs tag-resource command to add tags to a cluster:

aws ecs tag-resource --resource-arn <cluster-arn> --tags key=<TagKey>,value=<TagValue>

Default Value

By default, Amazon ECS clusters have only AWS-managed tags.

References

1. https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-using-tags.html
2. https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ecs/list-clusters.html
3. https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ecs/list-tags-for-resource.html

CIS Controls

Profile

Level 1 | Automated