Outage in Cloudflare

AWS S3 SDK compatibility inconsistencies with R2

Minor

January 17, 2025 - Started 4 days ago
Official incident page

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Outage Details

AWS recently updated their SDKs to enable CRC32 checksums on multiple object operations by default. R2 does not currently support CRC32 checksums, and the default configurations will return header related errors such as Header 'x-amz-checksum-algorithm' with value 'CRC32' not implemented. Impacted users can either pin AWS SDKs to a prior version or modify the configuration to restore the prior default behavior of not checking checksums on upload. For more details, see the examples section of the R2 Docs for the relevant SDK: https://developers.cloudflare.com/r2/examples/aws/

Components affected

Cloudflare Sites and Services Cloudflare R2

Latest Updates ( sorted recent to last )

IDENTIFIED 4 days ago - at 01/17/2025 11:23AM

We are continuing to work on a fix for this issue.

IDENTIFIED 4 days ago - at 01/17/2025 03:20AM

AWS recently updated their SDKs to enable CRC32 checksums on multiple object operations by default.
R2 does not currently support CRC32 checksums, and the default configurations will return header related errors such as Header 'x-amz-checksum-algorithm' with value 'CRC32' not implemented.

Impacted users can either pin AWS SDKs to a prior version or modify the configuration to restore the prior default behavior of not checking checksums on upload.

For more details, see the examples section of the R2 Docs for the relevant SDK:
https://developers.cloudflare.com/r2/examples/aws/

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