AWS managed policies for MemoryDB for Redis

To add permissions to users, groups, and roles, it is easier to use AWS managed policies than to write policies yourself. It takes time and expertise to create IAM customer managed policies that provide your team with only the permissions they need. To get started quickly, you can use our AWS managed policies. These policies cover common use cases and are available in your AWS account. For more information about AWS managed policies, see AWS managed policies in the IAM User Guide.

AWS services maintain and update AWS managed policies. You can't change the permissions in AWS managed policies. Services occasionally add additional permissions to an AWS managed policy to support new features. This type of update affects all identities (users, groups, and roles) where the policy is attached. Services are most likely to update an AWS managed policy when a new feature is launched or when new operations become available. Services do not remove permissions from an AWS managed policy, so policy updates won't break your existing permissions.

Additionally, AWS supports managed policies for job functions that span multiple services. For example, the ReadOnlyAccess AWS managed policy provides read-only access to all AWS services and resources. When a service launches a new feature, AWS adds read-only permissions for new operations and resources. For a list and descriptions of job function policies, see AWS managed policies for job functions in the IAM User Guide.

AWS managed policy: MemoryDBServiceRolePolicy

You cannot attach the MemoryDBServiceRolePolicy AWS managed policy to identities in your account. This policy is part of the AWS MemoryDB service-linked role. This role allows the service to manage network interfaces and security groups in your account.

MemoryDB uses the permissions in this policy to manage EC2 security groups and network interfaces. This is required to manage MemoryDB clusters.

Permissions details

This policy includes the following permissions.

{
        "Version": "2012-10-17",
        "Statement": [
            {
                "Effect": "Allow",
                "Action": [
                    "ec2:CreateTags"
                ],
                "Resource": "arn:aws:ec2:*:*:network-interface/*",
                "Condition": {
                    "StringEquals": {
                        "ec2:CreateAction": "CreateNetworkInterface"
                    },
                    "ForAllValues:StringEquals": {
                        "aws:TagKeys": [
                            "AmazonMemoryDBManaged"
                        ]
                    }
                }
            },
            {
                "Effect": "Allow",
                "Action": [
                    "ec2:CreateNetworkInterface"
                ],
                "Resource": [
                    "arn:aws:ec2:*:*:network-interface/*",
                    "arn:aws:ec2:*:*:subnet/*",
                    "arn:aws:ec2:*:*:security-group/*"
                ]
            },
            {
                "Effect": "Allow",
                "Action": [
                    "ec2:DeleteNetworkInterface",
                    "ec2:ModifyNetworkInterfaceAttribute"
                ],
                "Resource": "arn:aws:ec2:*:*:network-interface/*",
                "Condition": {
                    "StringEquals": {
                        "ec2:ResourceTag/AmazonMemoryDBManaged": "true"
                    }
                }
            },
            {
                "Effect": "Allow",
                "Action": [
                    "ec2:DeleteNetworkInterface",
                    "ec2:ModifyNetworkInterfaceAttribute"
                ],
                "Resource": "arn:aws:ec2:*:*:security-group/*"
            },
            {
                "Effect": "Allow",
                "Action": [
                    "ec2:DescribeSecurityGroups",
                    "ec2:DescribeNetworkInterfaces",
                    "ec2:DescribeAvailabilityZones",
                    "ec2:DescribeSubnets",
                    "ec2:DescribeVpcs"
                ],
                "Resource": "*"
            },
            {
                "Effect": "Allow",
                "Action": [
                    "cloudwatch:PutMetricData"
                ],
                "Resource": "*",
                "Condition": {
                    "StringEquals": {
                        "cloudwatch:namespace": "AWS/MemoryDB"
                    }
                }
            }
        ]
    }

AWS-managed (predefined) policies for MemoryDB for Redis

AWS addresses many common use cases by providing standalone IAM policies that are created and administered by AWS. Managed policies grant necessary permissions for common use cases so you can avoid having to investigate what permissions are needed. For more information, see AWS Managed Policies in the IAM User Guide.

The following AWS managed policies, which you can attach to users in your account, are specific to MemoryDB:

AmazonMemoryDBReadOnlyAccess

You can attach the AmazonMemoryDBReadOnlyAccess policy to your IAM identities. This policy grants administrative permissions that allow read-only access to all MemoryDB resources.

AmazonMemoryDBReadOnlyAccess - Grants read-only access to MemoryDB for Redis resources.

{
	"Version": "2012-10-17",
	"Statement": [{
		"Effect": "Allow",
		"Action": [
			"memorydb:Describe*",
			"memorydb:List*"
		],
		"Resource": "*"
	}]
}

AmazonMemoryDBFullAccess

You can attach the AmazonMemoryDBFullAccess policy to your IAM identities. This policy grants administrative permissions that allow full access to all MemoryDB resources.

AmazonMemoryDBFullAccess - Grants full access to MemoryDB for Redis resources.

{
	"Version": "2012-10-17",
	"Statement": [{
			"Effect": "Allow",
			"Action": "memorydb:*",
			"Resource": "*"
		},
		{
			"Effect": "Allow",
			"Action": "iam:CreateServiceLinkedRole",
			"Resource": "arn:aws:iam::*:role/aws-service-role/memorydb.amazonaws.com/AWSServiceRoleForMemoryDB",
			"Condition": {
				"StringLike": {
					"iam:AWSServiceName": "memorydb.amazonaws.com"
				}
			}
		}
	]
}

You can also create your own custom IAM policies to allow permissions for MemoryDB for Redis API actions. You can attach these custom policies to the IAM users or groups that require those permissions.

MemoryDB updates to AWS managed policies

View details about updates to AWS managed policies for MemoryDB since this service began tracking these changes. For automatic alerts about changes to this page, subscribe to the RSS feed on the MemoryDB Document history page.

Change	Description	Date
AmazonMemoryDBFullAccess – Adding policy	MemoryDB added new permissions to describe and list supported resources. These permissions are required for MemoryDB to query all of the supported resources in an account.	10/07/2021
AmazonMemoryDBReadOnlyAccess – Adding policy	MemoryDB added new permissions to describe and list supported resources. These permissions are required for MemoryDB to create account-based applications by querying all of the supported resources in an account.	10/07/2021
MemoryDB started tracking changes	Service launch	8/19/2021