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5 changes: 5 additions & 0 deletions administration/aws-credentials.md
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- [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)

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[vale] reported by reviewdog 🐶 [FluentBit.Spelling] Spelling check: 'Greengrass'? Raw Output: {"message": "[FluentBit.Spelling] Spelling check: 'Greengrass'?", "location": {"path": "administration/aws-credentials.md", "range": {"start": {"line": 10, "column": 8}}}, "severity": "INFO"}

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.

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## 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

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[vale] reported by reviewdog 🐶 [FluentBit.Headings] 'AWS Greengrass credentials' should use sentence-style capitalization. Raw Output: {"message": "[FluentBit.Headings] 'AWS Greengrass credentials' should use sentence-style capitalization.", "location": {"path": "administration/aws-credentials.md", "range": {"start": {"line": 47, "column": 4}}}, "severity": "INFO"}

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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[vale] reported by reviewdog 🐶 [FluentBit.Spelling] Spelling check: 'Greengrass'? Raw Output: {"message": "[FluentBit.Spelling] Spelling check: 'Greengrass'?", "location": {"path": "administration/aws-credentials.md", "range": {"start": {"line": 49, "column": 170}}}, "severity": "INFO"}

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[vale] reported by reviewdog 🐶 [FluentBit.Spelling] Spelling check: 'Greengrass'? Raw Output: {"message": "[FluentBit.Spelling] Spelling check: 'Greengrass'?", "location": {"path": "administration/aws-credentials.md", "range": {"start": {"line": 49, "column": 82}}}, "severity": "INFO"}
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