Identity-based policy examples for routing control in Amazon Application Recovery Controller (ARC)

By default, users and roles don't have permission to create or modify ARC resources. They also can't perform tasks by using the AWS Management Console, AWS Command Line Interface (AWS CLI), or AWS API. To grant users permission to perform actions on the resources that they need, an IAM administrator can create IAM policies. The administrator can then add the IAM policies to roles, and users can assume the roles.

To learn how to create an IAM identity-based policy by using these example JSON policy documents, see Create IAM policies (console) in the IAM User Guide.

For details about actions and resource types defined by ARC, including the format of the ARNs for each of the resource types, see Actions, resources, and condition keys for Amazon Application Recovery Controller (ARC) in the Service Authorization Reference.

Policy best practices

Identity-based policies determine whether someone can create, access, or delete ARC resources in your account. These actions can incur costs for your AWS account. When you create or edit identity-based policies, follow these guidelines and recommendations:

• Get started with AWS managed policies and move toward least-privilege permissions – To get started granting permissions to your users and workloads, use the AWS managed policies that grant permissions for many common use cases. They are available in your AWS account. We recommend that you reduce permissions further by defining AWS customer managed policies that are specific to your use cases. For more information, see AWS managed policies or AWS managed policies for job functions in the IAM User Guide.

• Apply least-privilege permissions – When you set permissions with IAM policies, grant only the permissions required to perform a task. You do this by defining the actions that can be taken on specific resources under specific conditions, also known as least-privilege permissions. For more information about using IAM to apply permissions, see Policies and permissions in IAM in the IAM User Guide.

• Use conditions in IAM policies to further restrict access – You can add a condition to your policies to limit access to actions and resources. For example, you can write a policy condition to specify that all requests must be sent using SSL. You can also use conditions to grant access to service actions if they are used through a specific AWS service, such as AWS CloudFormation. For more information, see IAM JSON policy elements: Condition in the IAM User Guide.

• Use IAM Access Analyzer to validate your IAM policies to ensure secure and functional permissions – IAM Access Analyzer validates new and existing policies so that the policies adhere to the IAM policy language (JSON) and IAM best practices. IAM Access Analyzer provides more than 100 policy checks and actionable recommendations to help you author secure and functional policies. For more information, see Validate policies with IAM Access Analyzer in the IAM User Guide.

• Require multi-factor authentication (MFA) – If you have a scenario that requires IAM users or a root user in your AWS account, turn on MFA for additional security. To require MFA when API operations are called, add MFA conditions to your policies. For more information, see Secure API access with MFA in the IAM User Guide.

For more information about best practices in IAM, see Security best practices in IAM in the IAM User Guide.

Example: ARC console access for routing control

To access the Amazon Application Recovery Controller (ARC) console, you must have a minimum set of permissions. These permissions must allow you to list and view details about the ARC resources in your AWS account. If you create an identity-based policy that is more restrictive than the minimum required permissions, the console won't function as intended for entities (users or roles) with that policy.

You don't need to allow minimum console permissions for users that are making calls only to the AWS CLI or the AWS API. Instead, allow access to only the actions that match the API operation that they're trying to perform.

To ensure that users and roles can still use the ARC console when you allow access to only specific API operations, also attach a ReadOnly AWS managed policy for ARC to the entities. For more information, see the ARC ARC managed policies page or Adding permissions to a user in the IAM User Guide.

To give users full access to use ARC routing control features through the console, attach a policy like the following to the user, to give the user full permissions to configure ARC routing control resources and operations:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [		
                   "route53-recovery-cluster:GetRoutingControlState",
                   "route53-recovery-cluster:UpdateRoutingControlState",
                   "route53-recovery-cluster:UpdateRoutingControlStates",
                   "route53-recovery-control-config:CreateCluster",
                   "route53-recovery-control-config:CreateControlPanel",
                   "route53-recovery-control-config:CreateRoutingControl",
                   "route53-recovery-control-config:CreateSafetyRule",
                   "route53-recovery-control-config:DeleteCluster",
                   "route53-recovery-control-config:DeleteControlPanel",
                   "route53-recovery-control-config:DeleteRoutingControl",
                   "route53-recovery-control-config:DeleteSafetyRule",
                   "route53-recovery-control-config:DescribeCluster",
                   "route53-recovery-control-config:DescribeControlPanel",
                   "route53-recovery-control-config:DescribeSafetyRule",
                   "route53-recovery-control-config:DescribeRoutingControl",
                   "route53-recovery-control-config:ListAssociatedRoute53HealthChecks",
                   "route53-recovery-control-config:ListClusters",
                   "route53-recovery-control-config:ListControlPanels",
                   "route53-recovery-control-config:ListRoutingControls",
                   "route53-recovery-control-config:ListSafetyRules",
                   "route53-recovery-control-config:UpdateControlPanel",
                   "route53-recovery-control-config:UpdateRoutingControl",
                   "route53-recovery-control-config:UpdateSafetyRule"
             ],
            "Resource": "*"
        },
                {
            "Effect": "Allow",
            "Action": [
                   "route53:GetHealthCheck",
                   "route53:CreateHealthCheck",
                   "route53:DeleteHealthCheck",
                   "route53:ChangeTagsForResource"
            ],
            "Resource": "*"
        }
    ]
}

Examples: ARC API actions for routing control configuration

To ensure that a user can use ARC API actions to work with ARC routing control configuration, attach a policy that corresponds to the API operations that the user needs to work with, as described below.

To work with API operations for recovery control configuration, attach a policy like the following to the user:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [		
                   "route53-recovery-control-config:CreateCluster",
                   "route53-recovery-control-config:CreateControlPanel",
                   "route53-recovery-control-config:CreateRoutingControl",
                   "route53-recovery-control-config:CreateSafetyRule",
                   "route53-recovery-control-config:DeleteCluster",
                   "route53-recovery-control-config:DeleteControlPanel",
                   "route53-recovery-control-config:DeleteRoutingControl",
                   "route53-recovery-control-config:DeleteSafetyRule",
                   "route53-recovery-control-config:DescribeCluster",
                   "route53-recovery-control-config:DescribeControlPanel",
                   "route53-recovery-control-config:DescribeSafetyRule",
                   "route53-recovery-control-config:DescribeRoutingControl",
                   "route53-recovery-control-config:GetResourcePolicy",
                   "route53-recovery-control-config:ListAssociatedRoute53HealthChecks",
                   "route53-recovery-control-config:ListClusters",
                   "route53-recovery-control-config:ListControlPanels",
                   "route53-recovery-control-config:ListRoutingControls",
                   "route53-recovery-control-config:ListSafetyRules",
                   "route53-recovery-control-config:ListTagsForResource",
                   "route53-recovery-control-config:UpdateControlPanel",
                   "route53-recovery-control-config:UpdateRoutingControl",
                   "route53-recovery-control-config:UpdateSafetyRule",
                   "route53-recovery-control-config:TagResource",
                   "route53-recovery-control-config:UntagResource"
            ],
            "Resource": "*"
        }
    ]
}

To perform tasks in ARC routing control with the recovery cluster data plane API, for example, updating routing control states to fail over during a disaster event, you can attach a ARC IAM policy such as the following to your IAM user.

The AllowSafetyRuleOverride boolean gives permission to override safety rules that you've configured as safeguards for routing controls. This permission might be required in "break glass" scenarios to bypass the safeguards in disasters or other urgent failover scenarios. For example, an operator might need to fail over quickly for disaster recovery, and one or more safety rules might unexpectedly prevent a routing control state update required to reroute traffic. This permission allows the operator to specify safety rules to override when making API calls to update routing control states. For more information, see Overriding safety rules to reroute traffic.

If you want to allow an operator to use the recovery cluster data plane API but prevent overriding safety rules, you can attach a policy such as the following, with AllowSafetyRuleOverrides boolean to false. To allow the operator to override safety rules, set the AllowSafetyRuleOverrides boolean to true.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "route53-recovery-cluster:GetRoutingControlState",
                "route53-recovery-cluster:ListRoutingControls"
            ],
            "Resource": "*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "route53-recovery-cluster:UpdateRoutingControlStates",
                "route53-recovery-cluster:UpdateRoutingControlState"
            ],
            "Resource": "*",
            "Condition": {
                "Bool": {
                    "route53-recovery-cluster:AllowSafetyRulesOverrides": "false"
                }
            }
        }
    ]
}