Unauthorized IAM Role Assignment Error- Navigating ‘is not authorized to perform- iam-passrole on resource’ Issues

by liuqiyue

is not authorized to perform: iam:passrole on resource

In today’s digital age, cloud computing has become an integral part of business operations. Amazon Web Services (AWS) is one of the leading cloud service providers, offering a wide range of services to help organizations scale and innovate. However, one common issue that AWS users may encounter is the “is not authorized to perform: iam:passrole on resource” error. This error message can be frustrating, especially when it prevents users from performing critical actions on their resources. In this article, we will delve into the causes of this error and provide solutions to help you overcome it.

The “is not authorized to perform: iam:passrole on resource” error occurs when a user or role lacks the necessary permissions to assume a different role in AWS. IAM (Identity and Access Management) is a key component of AWS, allowing users to manage access to AWS services and resources securely. IAM roles are used to delegate permissions to users or applications, enabling them to perform actions on resources without sharing credentials.

Several factors can contribute to the “is not authorized to perform: iam:passrole on resource” error. Here are some common causes:

1. Incorrect IAM role configuration: Ensure that the IAM role you are trying to assume has the necessary permissions attached to it. The permissions should include the “PassRole” permission for the target role.

2. Missing “PassRole” permission: Verify that the IAM role you are trying to assume has the “PassRole” permission enabled. Without this permission, you will not be able to assume the role.

3. Role ARN (Amazon Resource Name) issue: Ensure that the ARN of the IAM role you are trying to assume is correct. A typo or incorrect ARN can lead to this error.

4. Role session timeout: If the role session has expired, you will need to assume the role again to obtain a new session token.

To resolve the “is not authorized to perform: iam:passrole on resource” error, follow these steps:

1. Verify IAM role configuration: Check the IAM role’s permissions and ensure that the “PassRole” permission is enabled for the target role.

2. Check the IAM role ARN: Ensure that the ARN of the IAM role you are trying to assume is correct. Double-check for typos or incorrect characters.

3. Review the IAM role policy: Make sure that the IAM role policy allows the necessary permissions for the action you are trying to perform. If the policy is too restrictive, update it to grant the required permissions.

4. Assume the role again: If the role session has expired, you will need to assume the role again to obtain a new session token. Use the AWS CLI or SDK to assume the role and obtain a temporary security token.

By following these steps, you should be able to resolve the “is not authorized to perform: iam:passrole on resource” error and regain access to your AWS resources. Remember to always double-check IAM roles and permissions to ensure the security and integrity of your AWS environment.

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