Terraform iam policy attachment Import In Terraform v1. Managing IAM Users, Roles and Policies are always crucial from a security perspective. Argument Reference This resource supports the following arguments: user (Required) - The user the policy should be applied to policy_arn (Required) - The ARN of the policy you want to apply Attribute Reference This resource exports no additional attributes. But I cannot find another resource in the terraform registry for aws resources that is meant for customer-managed policies. To prevent persistent drift, ensure any aws_iam_role_policy resources managed alongside this resource are included in the policy_names argument. Jul 10, 2017 · I want to attach one of the pre-existing AWS managed roles to a policy, here's my current code: resource "aws_iam_role_policy_attachment" "sto-readonly-role-policy-attach" { role = "${ May 16, 2020 · I want to attach a managed IAM Policy ARN (like AmazomS3FullAccess) and an inline/custom IAM policy (written in JSON in terraform file) to a single IAM Role. These arguments are incompatible with other ways of managing a role's policies, such as aws_iam_policy_attachment, aws_iam_role_policy_attachment, and aws_iam Intro Learn Docs Extend Community Status Privacy Security Terms Press Kit Dec 27, 2023 · Remove the aws_iam_role_policy_attachment resource, and instead pass the ARN of the policy created with Terraform into the managed_policy_arns array. The usage of this resource conflicts with the aws_iam_policy_attachment resource and will permanently show a difference if both are defined. Am I correct or is there a subtle difference which I'm RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application Terraform supports creating IAM roles via the aws_iam_role resource, where you define the trust policy (assume role policy) and attach policies either inline or via aws_iam_role_policy_attachment. The aws_iam_policy_attachment resource creates exclusive attachments of IAM policies. 72. 7 AWS Provider Version 5. Learn how to attach AWS IAM managed or custom policies to roles in Terraform using aws_iam_role_policy_attachment. Actual Behavior │ Error: deleting IAM Policy RegistryPlease enable Javascript to use this application If you use this resource's managed_policy_arns argument or inline_policy configuration blocks, this resource will take over exclusive management of the role's respective policy types (e. Oct 6, 2024 · Learn how to efficiently attach multiple IAM policies to your IAM roles in AWS using Terraform with this comprehensive guide. For a given role, this resource is incompatible with using the aws_iam_role resource inline_policy argument. The below is the existing code i used to create the policies. . managed_policy_arns in favor of a new aws_iam_role_policy_attachments_exclusive resource is going to have a non negligible and unwanted impact on my Te Mar 21, 2022 · I have trying to attach one Iam policy to with multiple existing Iam Role , role already is there so used data , and inside the variable mention all existing Iam role names using with list (string), RegistryPlease enable Javascript to use this application Aug 19, 2021 · I need to create a new IAM role via Terraform. 9. These arguments are incompatible with other ways of managing a role's policies, such as aws_iam_policy_attachment, aws_iam_role_policy_attachment, and aws_iam We suggest using jsonencode() or aws_iam_policy_document when assigning a value to policy. Oct 21, 2024 · Terraform Core Version 1. logs Target apply the new attachment target apply -target aws_iam_role_policy_attachment. This request is for the ability to import policy attachments. In this blog post, we We suggest using jsonencode() or aws_iam_policy_document when assigning a value to policy. Either case is less than desirable. 0 and later, use an import block to import IAM role policy attachments using the role name The aws_iam_policy_attachment resource creates exclusive attachments of IAM policies. 0 and later, use an import block to import IAM group policy attachments using the group name and policy arn Dec 21, 2019 · Description Currently aws_iam_policy_attachment resources don't support import. If you remove the aws_iam_policy resource from your configuration and run a plan after importing the policy you should see that Terraform wants to destroy the policy because it is in the state file but not in the configuration. 5. To ensure Terraform correctly manages dependencies during updates, use a reference to the IAM resource when defining the policy_arn for aws_iam_policy_attachment, rather than constructing the ARN directly. These arguments are incompatible with other ways of managing a role's policies, such as aws_iam_policy_attachment, aws_iam_role_policy_attachment, and aws_iam RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application Feb 25, 2018 · Our main goal is to move some resources to a different terraform state fle. Inline policies hinder reusuability and cumbersome to read. To view Terraform (HCL) documentation or another CDK language, use the language dropdown on RegistryPlease enable Javascript to use this application AWS IAM Policy Documents with Terraform AWS leverages a standard JSON Identity and Access Management (IAM) policy document format across many services to control authorization to resources and API actions. This can be slightly mitigated by encapsulating our custom inline policy inside jsonencode(). We will cover Sep 18, 2024 · Description Manage customer managed IAM policies attached to a role. Typically, I would create a policy with aws_iam_role and attach it to the role with aws_iam_role_policy_attachment. A second run results in success. We'll cover finding the correct policy ARN, using the aws_iam_role_policy_attachment resource, and provide a complete example to get you started. RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application Oct 17, 2012 · Learn to create and attach IAM policies using Terraform, following the principle of least privilege for AWS users. For example: RegistryPlease enable Javascript to use this application The aws_iam_policy_attachment resource creates exclusive attachments of IAM policies. In Terraform v1. policy_arn (String) ARN of the IAM policy. However, I've seen some documentation which uses aws_iam_role_policy which, to my eyes, appears to do the same thing. Nov 16, 2021 · Step 5: Attach the instance profile to the EC2 instance Finally, the IAM instance profile that carries the IAM role is attached to the Amazon EC2 instance. In this example we have a list of AWS Principals that we want to allow access to our bucket named dev-to-multi-account-bucket. 0 and later, use an import block to import IAM role policy attachments using the role name and policy arn separated by /. This guide demonstrates how to efficiently attach multiple IAM policies to a single IAM role using Terraform's aws_iam_role_policy_attachment resource in conjunction with a for_each loop. Use Terraform to apply policy permissions to IAM user and S3 bucket resources. 0 and later, use an import block to import IAM group policy attachments using the group name and policy arn Argument Reference The following arguments are supported: role (Required) - The name of the IAM role to which the policy should be applied policy_arn (Required) - The ARN of the policy you want to apply Attributes Reference No additional attributes are exported. When using that argument and this resource, both will attempt to manage the role's inline policies and Terraform will show a permanent difference. Oct 17, 2024 · Description Hi, As a pretty extensive user of AWS IAM roles, deprecating aws_iam_role. Then i will walk you through the different steps to create an IAM Role for an EC2 service having CloudWatch and SNS full access policy . This approach simplifies policy management and ensures your IAM roles have the Resource: aws_iam_role_policy_attachments_exclusive Terraform resource for maintaining exclusive management of managed IAM policies assigned to an AWS IAM (Identity & Access Management) role. This means that even any users/roles/groups Sep 10, 2021 · Can anyone see why? I did note from the docs that this resource (aws_iam_role_policy_attachment) is meant for attaching "a Managed IAM Policy to an IAM role". Using this data source to generate policy documents is optional. hashicorp. The former option is (in my opinion) more readable and better represents the underlying AWS APIs. The Amazon EC2 instance then inherits the permission policy associated with the IAM role (step 3), which the IAM role inherited from the attached IAM policy (step 1). If you use this resource's managed_policy_arns argument or inline_policy configuration blocks, this resource will take over exclusive management of the role's respective policy types (e. Here in this guide i will first discuss what is terraform . It worked well! Terraform - creating multiple buckets The aws_iam_policy looks lik RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application We suggest using jsonencode() or aws_iam_policy_document when assigning a value to policy. We suggest using jsonencode() or aws_iam_policy_document when assigning a value to policy. This time I also connect the policy to the role using aws_iam_role_policy_attachment. This means that even any users/roles/groups that have the attached policy via any other mechanism (including other Terraform resources) will have The aws_iam_policy_attachment resource creates exclusive attachments of IAM policies. 0 and later, use an import block to import IAM role policy attachments using the role name Argument Reference This resource supports the following arguments: role (Required) - The name of the IAM role to which the policy should be applied policyArn (Required) - The ARN of the policy you want to apply Attribute Reference This resource exports no additional attributes. In this tutorial, we will create an IAM policy and user using Terraform on AWS. This means that even any users/roles/groups that have the attached policy via any other mechanism (including other Terraform resources) will have RegistryPlease enable Javascript to use this application Mar 29, 2022 · 概要 Terraform の “aws_iam_policy_attachment" を使用した失敗談を記事にします。 先ず、 “aws_iam_policy_attachment" は、IAMポリシーをIAM のuser (s), role (s), group (s) にアタッチするためのリソースです。この “aws_iam_policy_attachment" は、使用方法を理解しないと、想定外の結果を引き起こします。本記事の内容 Data Source: aws_iam_policy_document Generates an IAM policy document in JSON format for use with resources that expect policy documents such as aws_iam_policy. RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application See what IAM Policies are, numerous ways to create and manage IAM Policy using Terraform, and how to use them in practice. Jun 12, 2023 · Create an IAM Role In Terraform a role can be created using aws_iam_role block and policy if custom made is defined as inline-policy. Jul 4, 2024 · Get started with IAM by using Terraform to create users, groups, and policies. 0 and later, use an import block to import IAM role policy attachments using the role name Argument Reference This resource supports the following arguments: role (Required) - The name of the IAM role to which the policy should be applied policy_arn (Required) - The ARN of the policy you want to apply Attribute Reference This resource exports no additional attributes. Aug 3, 2017 · I want to attach multiple IAM Policy ARNs to a single IAM Role. Oct 14, 2024 · To correctly attach AWS managed policies to an IAM role using Terraform, you can follow these approaches. These arguments are incompatible with other ways of managing a role's policies, such as aws_iam_policy_attachment, aws_iam_role_policy_attachment, and aws_iam RegistryPlease enable Javascript to use this application The aws_iam_policy_attachment resource creates exclusive attachments of IAM policies. My suggestion is to create a variable of a list of objects type, where you define different attributes that are needed for the resources required. Optional account_id (String) AWS Account where this resource is managed. They seamlessly translate Terraform language into JSON, enabling you to maintain consistency within your configuration without the need for context switches. logs Sanity check terraform plan Remove the inline policy from the first step Feb 18, 2021 · In other words if you add a aws_iam_user_policy_attachment a policy will now be attached, if you remove a aws_iam_user_policy_attachment the previously attached policy will now be detached. 0 and later, use an import block to import IAM user policy attachments using the user name and policy arn Aug 5, 2024 · Day-10 Attaching IAM Policy to IAM Role Using Terraform: A Step-by-Step Guide Managing IAM roles in AWS can be complex, but with Terraform, you can streamline this process. Thanks much We suggest using jsonencode() or aws_iam_policy_document when assigning a value to policy. This tutorial will show you how to generate multiple IAM policy statements using this dynamic block. RegistryPlease enable Javascript to use this application Sep 6, 2023 · This blog will tell you how to create AWS IAM resources and policies using terraform in different ways. Aug 3, 2017 · You still need to provide the required fields in the Terraform configuration for the plan to work. The best workaround for this issue is to create individual policies for each role attachment that you're wanting to attach. Why the Change? Apr 1, 2016 · Note that I only seem to get this when attaching amazon "managed" policies to a role. I am trying to import a policy attachment of a resource ,however seems like it does not support importing of policy attac The Role Policy Attachment in IAM can be configured in Terraform with the resource name aws_iam_role_policy_attachment. Mar 6, 2021 · I have a aws_iam_role which I want to add a policy to. It does not make sense to explicitly declare a detachment. AWS IAM Policy Attachment This page shows how to write Terraform and CloudFormation for IAM Policy Attachment and write them securely. variable "usernames& Sep 21, 2021 · Hello. Argument Reference This resource supports the following arguments: role (Required) - The name of the IAM role to which the policy should be applied policy_arn (Required) - The ARN of the policy you want to apply Attribute Reference This resource exports no additional attributes. Identity Schema Required role (String) Name of the IAM role. Glue GuardDuty IAM (Identity & Access Management) IAM Access Analyzer IVS (Interactive Video) IVS (Interactive Video) Chat Inspector RegistryPlease enable Javascript to use this application Argument Reference This resource supports the following arguments: user (Required) - The user the policy should be applied to policy_arn (Required) - The ARN of the policy you want to apply Attribute Reference This resource exports no additional attributes. Dec 27, 2023 · Remove the aws_iam_role_policy_attachment resource, and instead pass the ARN of the policy created with Terraform into the managed_policy_arns array. This means that even any users/roles/groups that have the attached policy via any other mechanism (including other Terraform resources) will have If you use this resource's managed_policy_arns argument or inline_policy configuration blocks, this resource will take over exclusive management of the role's respective policy types (e. Terraform is a popular open-source deployment automation RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application Data Source: aws_iam_policy_document Generates an IAM policy document in JSON format for use with resources that expect policy documents such as aws_iam_policy. These arguments are incompatible with other ways of managing a role's policies, such as aws_iam_policy_attachment, aws_iam_role_policy_attachment, and aws_iam Argument Reference This resource supports the following arguments: role (Required) - The name of the IAM role to which the policy should be applied policy_arn (Required) - The ARN of the policy you want to apply Attribute Reference This resource exports no additional attributes. Also, as a note, the above code is in a module, and I call that module multiple times (despite the warning in the documentation about only using "aws_iam_policy_attachment" once per policy. Example: The usage of this resource conflicts with the aws_iam_policy_attachment resource and will permanently show a difference if both are defined. Jun 1, 2022 · I wanted to attach a couple of policies to a role, but noticed that the role can have only 10 policies attached. Then i will discuss what is IAM Role and in which scenarios we should use IAM Role . See full list on developer. One method is to create a new policy with privileges of all the policies (multiple policies). Also, you can sidestep potential complications arising from formatting discrepancies, whitespace inconsistencies, and other nuances inherent to JSON. , both policy types if both arguments are used). RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application aws_iam_policy_attachment Attaches a Managed IAM Policy to user (s), role (s), and/or group (s) ~> NOTE: The aws_iam_policy_attachment resource is only meant to be used once for each managed policy. 1 Affected Resource (s) aws_iam_policy aws_iam_role_policy_attachments_exclusive Expected Behavior Created resources should have deleted. g. But in AWS, we have some predefined IAM Oct 9, 2024 · This guide explains how to attach an AWS managed policy to an existing IAM role using Terraform. For more information about building IAM policy documents with Terraform, see the AWS IAM Policy Document Guide role - (Required) The name of the IAM role to attach to the policy. Related resources: aws_iam_role aws_iam_policy aws_iam_role_policy_attachment Deprecate aws_iam_role. RegistryPlease enable Javascript to use this application If you use this resource's managed_policy_arns argument or inline_policy configuration blocks, this resource will take over exclusive management of the role's respective policy types (e. This includes removal of inline policies which are not explicitly configured. This means that even any users/roles/groups that have the attached policy via any other mechanism (including other Terraform resources) will have RegistryPlease enable Javascript to use this application The aws_iam_policy_attachment resource creates exclusive attachments of IAM policies. managed_policy_arns. Requested Resource (s) and/or Data Source (s) aw RegistryPlease enable Javascript to use this application Aug 11, 2025 · The managed_policy_arns attribute was a convenient way to attach multiple managed IAM policies directly to an aws_iam_role. com May 16, 2020 · To gain full voting privileges, How do I attach a managed IAM policy and an inline/custom IAM policy to IAM roles? I want to attach a managed IAM Policy ARN (like AmazomS3FullAccess) and an inline/custom IAM policy (written in JSON in terraform file) to a single IAM Role. However, to improve flexibility and reduce confusion in resource handling, the Terraform AWS provider recommends explicitly attaching policies using the aws_iam_role_policy_attachment resource. Across the entire AWS account, all of the users/roles/groups to which a single policy is attached must be declared by a single aws_iam_policy_attachment resource. Feb 10, 2017 · The aws_iam_policy_attachment resource can only be used once PER policy resource, as the resource manages all of the role attachments for that IAM Policy. Remove the bad resource from the state May not be necessary since it was removed in the previous step terraform state rm aws_iam_policy_attachment. Refactor your policy with the IAM policy document data source to automatically format your JSON policies for reuse. Import IAM role policy attachments can be imported using the role name and policy arn separated by /. 0 and later, use an import block to import IAM role policy attachments using the role name Dec 7, 2021 · the way to get the above to work is to either: hardcode “policy_attachement” for each arn create policy on the first run of the code, and add the policy to toset () (so it will be automatically attached) on the second run of terraform apply. Creating an IAM Role in Terraform is done in the same way as in the previous two ways. The following sections describe 3 examples of how to use the resource and its parameters. This means that even any users/roles/groups that have the attached policy via any other mechanism (including other Terraform resources) will have Feb 8, 2023 · There's a direct relationship between the following resources: aws_iam_policy , the data source for aws_iam_policy_document, the aws_iam_group_policy_attachment and the aws_iam_group resource. Dec 13, 2018 · I created an earlier post to resolve an issue for creating multiple s3 buckets without trying to duplicate code. In this article, we will look at what an IAM (Identity and Access Management) role in AWS (Amazon Web Services) is, and show a step-by-step example of how to create one using Terraform. RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application Oct 6, 2024 · Introduction In AWS, you can streamline the process of granting permissions to IAM roles by attaching multiple IAM policies. The role should have a policy that is predefined in AWS (AmazonSSMFullAccess), but I cannot find anywhere how should I add a policy that is already cr Mar 26, 2020 · If you have an aws_iam_role_policy_attachment resource with a count based on a list of policy arns and you re apply terraform with the list order changed (ie adding a new policy to the front of the list) terraform returns the error Jul 23, 2025 · Terraform is an IAAC tool which is used provision infrastructure . aws_iam_policy_attachment Attaches a Managed IAM Policy to user(s), role(s), and/or group(s) WARNING: The aws_iam_policy_attachment resource creates exclusive attachments of IAM policies. 0 and later, use an import block to import IAM user policy attachments using the user name and policy arn Argument Reference This resource supports the following arguments: group (Required) - The group the policy should be applied to policy_arn (Required) - The ARN of the policy you want to apply Attribute Reference This resource exports no additional attributes. You’re viewing the translated Python version of this documentation page. by using aws_iam_role_policy_attachmen The Policy Attachment in IAM can be configured in Terraform with the resource name aws_iam_policy_attachment. Proper management of the IAM User, IAM Roles and IAM Policies can really improve the operational burden as well as the security of the AWS environment. This means that even any users/roles/groups that have the attached policy via any other mechanism (including other Terraform resources) will have The usage of this resource conflicts with the aws_iam_policy_attachment resource and will permanently show a difference if both are defined. We'll also highlight important considerations to keep in mind when managing IAM policies with Terraform. This blog post is going to be a comprehensive guide on managing the AWS IAM User, IAM Roles and IAM Policies using Terraform. There are two main ways to attach policies to a role. All of the users/roles/groups that a single policy is being attached to should be declared by a single aws_iam_policy_attachment resource. In this blog post, we are going RegistryPlease enable Javascript to use this application WARNING: The aws_iam_policy_attachment resource creates exclusive attachments of IAM policies. This means that even any users/roles/groups that have the attached policy via any other mechanism (including other Terraform resources) will have Argument Reference This resource supports the following arguments: role (Required) - The name of the IAM role to which the policy should be applied policyArn (Required) - The ARN of the policy you want to apply Attribute Reference This resource exports no additional attributes. These arguments are incompatible with other ways of managing a role's policies, such as aws_iam_policy_attachment, aws_iam_role_policy_attachment, and aws_iam RegistryPlease enable Javascript to use this application Dec 10, 2024 · Learn how to manage AWS IAM policies with AWS Organizations and Terraform for secure and scalable infrastructure WARNING: The aws_iam_policy_attachment resource creates exclusive attachments of IAM policies. New or Affected Resource (s) aws_iam_policy_attachment Potential Terraform Configuration Standard configuration for aws_iam_policy_attachment RegistryPlease enable Javascript to use this application RegistryPlease enable Javascript to use this application Jan 27, 2022 · Terraform has a cool resource block called the 'dynamic' block that allows generating multiple nested blocks for a resource. It is also valid to use literal JSON strings in your configuration or to use the file interpolation function to read a raw JSON policy document from a file. New or Affected Resource (s) aws_iam_policy_attachment Potential Terraform Configuration Standard configuration for aws_iam_policy_attachment RegistryPlease enable Javascript to use this application Argument Reference This resource supports the following arguments: group (Required) - The group the policy should be applied to policy_arn (Required) - The ARN of the policy you want to apply Attribute Reference This resource exports no additional attributes. 0 and later, use an import block to import IAM role policy attachments using the role name This resource takes exclusive ownership over inline policies assigned to a role. RegistryPlease enable Javascript to use this application Dec 21, 2019 · Description Currently aws_iam_policy_attachment resources don't support import. Our policy is not a managed one. Simply setup your aws_iam_policy resource to match the imported Dec 5, 2022 · If you have IAM policies defined in JSON format, you can add the contents of such a policy without any changes in the aws_iam_policy resource.