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eschabell merged 1 commit into from
Mar 24, 2026
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aws-credentials: add AWS Greengrass endpoint details #2323

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5 changes: 5 additions & 0 deletions administration/aws-credentials.md
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Expand Up @@ -7,6 +7,7 @@ Plugins that interact with AWS services fetch credentials from the following pro
- [EKS Web Identity Token (OIDC)](#eks-web-identity-token-oidc)
- [ECS HTTP credentials endpoint](#ecs-http-credentials-endpoint)
- [EC2 Instance Profile Credentials (IMDS)](#ec2-instance-profile-credentials-imds)
- [`AWS Greengrass` credentials](#aws-greengrass-credentials)

All AWS plugins additionally support a `role_arn` (or `AWS_ROLE_ARN`, for [Elasticsearch](../pipeline/outputs/elasticsearch.md)) configuration parameter. If specified, the fetched credentials are used to assume the given role.

Expand Down Expand Up @@ -42,3 +43,7 @@ Credentials are fetched using a pod identity endpoint. See [Learn how EKS Pod I
## EC2 instance profile credentials (IMDS)

Fetches credentials for the EC2 instance profile's role. See [IAM roles for Amazon EC2](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/iam-roles-for-amazon-ec2.html). As of Fluent Bit version 1.8.8, IMDSv2 is used by default and IMDSv1 might be disabled. Prior versions of Fluent Bit require enabling IMDSv1 on EC2.

## `AWS Greengrass` credentials

Fluent Bit fetches credentials from a localhost endpoint provided by the AWS IoT `Greengrass` token exchange service. The token exchange service runs as a local server on `Greengrass` core devices and provides AWS credentials through the `AWS_CONTAINER_CREDENTIALS_FULL_URI` and `AWS_CONTAINER_AUTHORIZATION_TOKEN` environment variables. For more information, see the AWS documentation about [Token exchange service](https://docs.aws.amazon.com/greengrass/v2/developerguide/token-exchange-service-component.html).
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