由于身份验证，gsutil 无法复制到 s3

问题描述

I need to copy many (1000+) files to s3 from GCS to leverage an AWS lambda function. I have edited ~/.boto.cfg and commented out the 2 aws authentication parameters but a simple gsutil ls s3://mybucket fails from either an GCE or EC2 VM.

Error is The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256..

I use gsutil version: 4.28 and locations of GCS and S3 bucket are respectively US-CENTRAL1 and US East (Ohio) - in case this is relevant.

I am clueless as the AWS key is valid and I enabled http/https. Downloading from GCS and uploading to S3 using my laptop's Cyberduck is impracticable (>230Gb)

解决方案

As per https://issuetracker.google.com/issues/62161892, gsutil v4.28 does support AWS v4 signatures by adding to ~/.boto a new [s3] section like

[s3]
# Note that we specify region as part of the host, as mentioned in the AWS docs:
# http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region
host = s3.eu-east-2.amazonaws.com
use-sigv4 = True

The use of that section is inherited from boto3 but is currently not created by gsutil config so it needs to be added explicitly for the target endpoint.

For s3-to-GCS, I will consider the more server-less Storage Transfer Service API.

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