Amazon Elastic Compute Cloud (EC2) is a web service that provides resizable compute capacity in the cloud. It is designed to make web-scale cloud computing easier for developers. With EC2, you can launch virtual servers, configure security and networking, and manage storage. EC2 allows you to scale up or down to handle changes in requirements or spikes in popularity, reducing your need to forecast traffic.
When working with EC2, you might encounter the UnauthorizedOperation error. This error typically manifests when you attempt to perform an operation for which you lack the necessary permissions. The error message might look something like this:
{
"__type": "UnauthorizedOperation",
"message": "You are not authorized to perform this operation."
}
The UnauthorizedOperation error occurs when the AWS Identity and Access Management (IAM) policies associated with your user account do not grant the permissions required to execute the requested operation. This is a common issue when IAM policies are not correctly configured or when a user attempts to perform actions outside their granted permissions.
To resolve this issue, follow these steps:
First, check the IAM policies attached to your user or role. Ensure that the policies include the necessary permissions for the operation you are trying to perform. You can do this by navigating to the IAM Console and reviewing the policies.
If the required permissions are missing, you will need to modify the IAM policies. For example, to allow starting and stopping EC2 instances, your policy should include:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"ec2:StartInstances",
"ec2:StopInstances"
],
"Resource": "*"
}
]
}
Make sure to adjust the Resource field to specify particular resources if needed.
After updating the policies, test the permissions by attempting the operation again. If the issue persists, double-check the policy syntax and ensure there are no conflicting policies.
For more information on managing IAM policies, refer to the AWS IAM User Guide. To understand more about EC2 permissions, visit the EC2 IAM Roles Documentation.
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