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From GitBox <...@apache.org>
Subject [GitHub] [libcloud] Kami commented on issue #1545: Can't access EC2 zones requiring signature version 4
Date Fri, 22 Jan 2021 10:43:40 GMT

Kami commented on issue #1545:
URL: https://github.com/apache/libcloud/issues/1545#issuecomment-765315563


   Thanks for reporting this.
   
   Quickly glancing at this code, I don't see how it could affect it, but I need to dig in.
   
   Looking at the code it seems like we default to signature version 2. Did we ever default
to version 4?
   
   * https://github.com/apache/libcloud/blob/trunk/libcloud/compute/drivers/ec2.py#L1618
   * https://github.com/apache/libcloud/blob/trunk/libcloud/common/aws.py#L54
   
   It seems like we only force version 4 if token auth is used - https://github.com/apache/libcloud/blob/trunk/libcloud/compute/drivers/ec2.py#L4696.
   
   I wonder if this could actually be related to AWS finally deprecating signature v2 for
some of those regions (https://aws.amazon.com/blogs/aws/amazon-s3-update-sigv2-deprecation-period-extended-modified/)?
   
   If that's the case, it may make sense to default to v4 for everything, but we need to make
sure it don't break anything.


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