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plugin_agent_svidstore_aws_secretsmanager.md

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Agent plugin: SVIDStore "aws_secretsmanager"

The aws_secretsmanager plugin stores in AWS Secrets Manager the resulting X509-SVIDs of the entries that the agent is entitled to.

Secret format

The format that is used to store in a secret the issued identity is the following:

{
    "spiffeId": "spiffe://example.org",
    "x509Svid": "X509_CERT_CHAIN_PEM",
    "x509SvidKey": "PRIVATE_KEY_PEM",
    "bundle": "X509_BUNDLE_PEM",
    "federatedBundles": {
        "spiffe://federated.org": "X509_FEDERATED_BUNDLE_PEM"
    }
}

Required AWS IAM permissions

This plugin requires the following IAM permissions in order to function:

secretsmanager:DescribeSecret
secretsmanager:CreateSecret
secretsmanager:RestoreSecret
secretsmanager:PutSecretValue
secretsmanager:TagResource
secretsmanager:DeleteSecret
kms:Encrypt

Please note that this plugin does not read secrets it has stored and therefore does not require read permissions.

Configuration

When the SVIDs are updated, the plugin takes care of updating them in AWS Secrets Manager.

Configuration Description
access_key_id AWS access key id. Default: value of AWS_ACCESS_KEY_ID environment variable.
secret_access_key AWS secret access key. Default: value of AWS_SECRET_ACCESSKEY environment variable.
region AWS region to store the secrets.

A sample configuration:

    SVIDStore "aws_secretsmanager" {
       plugin_data {
           access_key_id = "ACCESS_KEY_ID"
           secret_access_key = "SECRET_ACCESS_KEY"
           region = "us-east-1"
       }
    }

Selectors

The selectors of the type aws_secretsmanager are used to describe metadata that is needed by the plugin in order to store secret values in AWS Secrets Manager.

Selector Example Description
aws_secretsmanager:secretname aws_secretsmanager:secretname:some-name Friendly name of the secret where the SVID is stored. If not specified aws_secretsmanager:arn must be defined
aws_secretsmanager:arn aws_secretsmanager:arn:some-arn The Amazon Resource Name (ARN) of the secret where the SVID is stored. If not specified, aws_secretsmanager:secretname must be defined
aws_secretsmanager:kmskeyid aws_secretmanager:kmskeyid Specifies the ARN, Key ID, or alias of the AWS KMS customer master key (CMK) to be used to encrypt the secrets. Any of the supported ways to identify a AWS KMS key ID can be used. If a CMK in a different account needs to be referenced, only the key ARN or the alias ARN can be used. If not specified, the AWS account's default CMK is used