gsutil rsync with s3 buckets gives InvalidAccessKeyId error - amazon-web-services

Question

I am trying to copy all the data from an AWS S3 bucket to a GCS bucket. Acc. to this answer rsync command should have been able to do that. But I am receiving the following error when trying to do that
Caught non-retryable exception while listing s3://my-s3-source/: AccessDeniedException: 403 InvalidAccessKeyId
<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>InvalidAccessKeyId</Code><Message>The AWS Access Key Id you provided does not exist in our records.</Message><AWSAccessKeyId>{REDACTED}</AWSAccessKeyId><RequestId>{REDACTED}</RequestId><HostId>{REDACTED}</HostId></Error>
CommandException: Caught non-retryable exception - aborting rsync
This is the command I am trying to run
gsutil -m rsync -r s3://my-s3-source gs://my-gcs-destination
I have the AWS CLI installed which is working fine with the same AccessKeyId and listing buckets as well as objects in the bucket.
Any idea what am I doing wrong here?

Answer 1

gsutil can work with both Google Storage and S3.
gsutil rsync -d -r s3://my-aws-bucket gs://example-bucket
You just need to configure it with both - Google and your AWS S3 credentials. For GCP you need to add the Amazon S3 credentials to ~/.aws/credentials or you can also store your AWS credentials in the .boto configuration file for gsutil. However, when you're accessing an Amazon S3 bucket with gsutil, the Boto library uses your ~/.aws/credentials file to override other credentials, such as any that are stored in ~/.boto.
=== 1st update ===
Also make sure you have to make sure you have the correct IAM permissions on the GCP side and the correct AWS IAM credentials. Also depending if you have a prior version of Migrate for Compute Engine (formerly Velostrata) use this documentation and make sure you set up the VPN, IAM credentials and AWS network. If you are using the current version (5.0), use the following documentation to check everything is configured correctly.