Not able to connect to an S3 bucket using a gateway VPC endpoint-CodePudding

I’m using a gateway endpoint to connect to a S3 bucket from an EC2 instance in the default VPC. However, the connection isn't working.

I have checked the following configurations:

VPC DNS resolution to yes.
VPC route table table has access to Amazon S3 using the gateway VPC endpoint.
Security group outbound rules for EC2 permits all traffic on all ports.
VPC network ACL is permitting all traffic.
Bucket policy allows public access.
EC2 instance is attached to IAM role which is attached to S3FullAccess Policy.
Both bucket and EC2 are in us-east-2.

Error Details:

[ec2-user@ip-172-31-37-114 ~]$ aws s3 ls

Connect timeout on endpoint URL: "https://s3.amazonaws.com/"
[ec2-user@ip-172-31-37-114 ~]$

CodePudding user response：

Can you please explain why it is not working without it --region us-east-2?

It was working because you were using s3.amazonaws.com endpoint which is for us-east-1 region. Gateway VPC endpoints are regional, and your endpoint was created for us-east-2. So you had to explicitly tell aws s3 to use us-east-2, rather then default us-east-1.