How to access s3 bucket in ec2 windows instance using CLI

Question

I have been using EC2 windows instance and installed AWS CLI in it, I have created IAM user with CLI access credential and with full s3 access permission and I had install AWS CLI in my personal system. Now the problem is that I can access the s3 bucket using CLI credential in my system but not in EC2 instance CLI.

Here I provide the error I got

An error occurred (AuthorizationHeaderMalformed) when calling the ListBuckets operation: The authorization header is malformed; the authorization header requires three components: Credential, SignedHeaders, and Signature.

That is a very strange error message. One thing to check... is the Date and Time set correctly on the instance? If not, the signature can be invalid. — John Rotenstein

Gergely Szabo Gergely Szabo · Accepted Answer · 2020-01-30T10:49:11

You should grant s3 permissions to your instance's IAM role instead. Then you won't even have to do any profile configuration on the instance.

How to access s3 bucket in ec2 windows instance using CLI

1 Answers