Contents
- 1 Why am I getting an access denied error message when I upload files to my Amazon S3 bucket that has AWS kms default encryption?
- 2 Why am I getting an access denied error when I use a lambda function to upload files to an Amazon S3 bucket in same account?
- 3 How to resolve S3 access denied errors when using an AWS SDK?
- 4 Why do I get an Access Denied error on S3 bucket policy?
Why am I getting an access denied error message when I upload files to my Amazon S3 bucket that has AWS kms default encryption?
This error message indicates that your IAM user or role needs permission for the kms:GenerateDataKey action. This permission is required for buckets that use default encryption with a custom AWS KMS key. From the console, open the IAM user or role that you’re using to upload files to the Amazon S3 bucket.
Why am I getting an access denied error when I use a lambda function to upload files to an Amazon S3 bucket in same account?
You receive an Access Denied error when the permissions between the AWS Lambda function and the Amazon S3 bucket are incomplete or incorrect. In Account A, create an AWS Identity and Access Management (IAM) role (execution role) for the Lambda function that allows the function to upload objects to Amazon S3.
How do I enable Lambda to access S3 bucket?
Resolution
- Follow the steps in Creating an execution role in the IAM console.
- From the list of IAM roles, choose the role that you just created.
- In the Permissions tab, choose Add inline policy.
- Choose the JSON tab.
- Enter a resource-based IAM policy that grants access to your S3 bucket.
- Choose Review policy.
Can Lambda write to S3?
Yes it is absolutely possible! Make sure that you give your Lambda function the required write permissions to the target s3 bucket / key path by selecting or updating the IAM Role your lambda executes under.
How to resolve S3 access denied errors when using an AWS SDK?
1. Verify that the AWS CLI and the AWS SDK that you’re using are configured with the same credentials. 2. Check that the AWS SDK requests to Amazon S3 are allowed by a firewall, HTTP proxy, or Amazon Virtual Private Cloud (Amazon VPC) endpoint.
Why do I get an Access Denied error on S3 bucket policy?
If S3 Block Public Access is enabled, you get an Access Denied error when you try to save a bucket policy that grants public access. If you’re using AWS Organizations, check the service control policies for any statements that explicitly deny Amazon S3 access, specifically for the s3:PutBucketPolicy action.
When to delete the S3 bucket policy in AWS?
If the bucket policy denies everyone access to s3:GetBucketPolicy and s3:PutBucketPolicy, delete the bucket policy. If no IAM identities are able to view or modify the bucket policy, the AWS account root user has permission to delete the existing bucket policy.
What do I need to know about Amazon S3 policy?
In particular, check the service control policies for statements denying the s3:PutBucketPolicy action. For example, the following policy explicitly denies access to all Amazon S3 actions and results in an Access Denied error.