Amazon EC2 (Elastic Compute Cloud) is a web service that provides resizable compute capacity in the cloud. It is designed to make web-scale cloud computing easier for developers. EC2 allows you to launch virtual servers, configure security and networking, and manage storage. IAM (Identity and Access Management) instance profiles are used to pass role information to EC2 instances, allowing them to access AWS resources securely.
When working with EC2, you might encounter the error code InvalidIAMInstanceProfileAssociationID.NotFound. This error indicates that the specified IAM instance profile association ID does not exist or is incorrect. This typically happens when attempting to associate or disassociate an IAM role with an EC2 instance.
The error message usually appears as follows:
InvalidIAMInstanceProfileAssociationID.NotFound: The association ID 'iip-assoc-12345678' does not exist.
The error InvalidIAMInstanceProfileAssociationID.NotFound occurs when the IAM instance profile association ID provided in the request is not found. This could be due to a typo in the ID, the association being deleted, or the ID being incorrect.
An IAM instance profile association is a link between an EC2 instance and an IAM role. This association allows the instance to assume the role and access AWS resources as defined by the role's permissions. If the association ID is incorrect or missing, the instance cannot assume the role.
To resolve the InvalidIAMInstanceProfileAssociationID.NotFound error, follow these steps:
Ensure that the IAM instance profile association ID you are using is correct. You can list all associations using the AWS CLI:
aws ec2 describe-iam-instance-profile-associations
Check the output to confirm that the association ID you are using exists.
If the association ID was previously valid, it might have been deleted. Verify if the association was removed by reviewing your AWS CloudTrail logs or checking with team members who have access to modify IAM roles and associations.
If you find that the ID was incorrect, update your scripts or configuration files with the correct association ID. You can find the correct ID by listing the associations as shown in step 1.
If the association was deleted, you might need to recreate it. Use the following command to associate an IAM instance profile with an EC2 instance:
aws ec2 associate-iam-instance-profile --instance-id i-1234567890abcdef0 --iam-instance-profile Name=YourProfileName
Replace YourProfileName with the name of your IAM instance profile.
For more information on IAM instance profiles and associations, refer to the following AWS documentation:
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