# AWSGreengrassResourceAccessRolePolicy
<a name="AWSGreengrassResourceAccessRolePolicy"></a>

**Description**: Policy for AWS Greengrass service role which allows access to related services including AWS Lambda and AWS IoT thing shadows.

`AWSGreengrassResourceAccessRolePolicy` is an [AWS managed policy](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_managed-vs-inline.html#aws-managed-policies).

## Using this policy
<a name="AWSGreengrassResourceAccessRolePolicy-how-to-use"></a>

You can attach `AWSGreengrassResourceAccessRolePolicy` to your users, groups, and roles.

## Policy details
<a name="AWSGreengrassResourceAccessRolePolicy-details"></a>
+ **Type**: Service role policy 
+ **Creation time**: February 14, 2017, 21:17 UTC 
+ **Edited time:** November 14, 2018, 00:35 UTC
+ **ARN**: `arn:aws:iam::aws:policy/service-role/AWSGreengrassResourceAccessRolePolicy`

## Policy version
<a name="AWSGreengrassResourceAccessRolePolicy-version"></a>

**Policy version:** v5 (default)

The policy's default version is the version that defines the permissions for the policy. When a user or role with the policy makes a request to access an AWS resource, AWS checks the default version of the policy to determine whether to allow the request. 

## JSON policy document
<a name="AWSGreengrassResourceAccessRolePolicy-json"></a>

```
{
  "Version" : "2012-10-17",
  "Statement" : [
    {
      "Sid" : "AllowGreengrassAccessToShadows",
      "Action" : [
        "iot:DeleteThingShadow",
        "iot:GetThingShadow",
        "iot:UpdateThingShadow"
      ],
      "Effect" : "Allow",
      "Resource" : [
        "arn:aws:iot:*:*:thing/GG_*",
        "arn:aws:iot:*:*:thing/*-gcm",
        "arn:aws:iot:*:*:thing/*-gda",
        "arn:aws:iot:*:*:thing/*-gci"
      ]
    },
    {
      "Sid" : "AllowGreengrassToDescribeThings",
      "Action" : [
        "iot:DescribeThing"
      ],
      "Effect" : "Allow",
      "Resource" : "arn:aws:iot:*:*:thing/*"
    },
    {
      "Sid" : "AllowGreengrassToDescribeCertificates",
      "Action" : [
        "iot:DescribeCertificate"
      ],
      "Effect" : "Allow",
      "Resource" : "arn:aws:iot:*:*:cert/*"
    },
    {
      "Sid" : "AllowGreengrassToCallGreengrassServices",
      "Action" : [
        "greengrass:*"
      ],
      "Effect" : "Allow",
      "Resource" : "*"
    },
    {
      "Sid" : "AllowGreengrassToGetLambdaFunctions",
      "Action" : [
        "lambda:GetFunction",
        "lambda:GetFunctionConfiguration"
      ],
      "Effect" : "Allow",
      "Resource" : "*"
    },
    {
      "Sid" : "AllowGreengrassToGetGreengrassSecrets",
      "Action" : [
        "secretsmanager:GetSecretValue"
      ],
      "Effect" : "Allow",
      "Resource" : "arn:aws:secretsmanager:*:*:secret:greengrass-*"
    },
    {
      "Sid" : "AllowGreengrassAccessToS3Objects",
      "Action" : [
        "s3:GetObject"
      ],
      "Effect" : "Allow",
      "Resource" : [
        "arn:aws:s3:::*Greengrass*",
        "arn:aws:s3:::*GreenGrass*",
        "arn:aws:s3:::*greengrass*",
        "arn:aws:s3:::*Sagemaker*",
        "arn:aws:s3:::*SageMaker*",
        "arn:aws:s3:::*sagemaker*"
      ]
    },
    {
      "Sid" : "AllowGreengrassAccessToS3BucketLocation",
      "Action" : [
        "s3:GetBucketLocation"
      ],
      "Effect" : "Allow",
      "Resource" : "*"
    },
    {
      "Sid" : "AllowGreengrassAccessToSageMakerTrainingJobs",
      "Action" : [
        "sagemaker:DescribeTrainingJob"
      ],
      "Effect" : "Allow",
      "Resource" : [
        "arn:aws:sagemaker:*:*:training-job/*"
      ]
    }
  ]
}
```

## Learn more
<a name="AWSGreengrassResourceAccessRolePolicy-learn-more"></a>
+ [Create a permission set using AWS managed policies in IAM Identity Center](https://docs.aws.amazon.com/singlesignon/latest/userguide/howtocreatepermissionset.html) 
+ [Adding and removing IAM identity permissions](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_manage-attach-detach.html) 
+ [Understand versioning for IAM policies](https://docs.aws.amazon.com//IAM/latest/UserGuide/access_policies_managed-versioning.html)
+ [Get started with AWS managed policies and move toward least-privilege permissions](https://docs.aws.amazon.com//IAM/latest/UserGuide/best-practices.html#bp-use-aws-defined-policies)