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CORS Preflight (OPTIONS) Request Fails on StorageGRID

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Applies to

  • NetApp StorageGRID
  • S3-compatible object storage buckets with CORS enabled
  • Applications using CORS policies for cross-origin requests

Issue

  • CORS-enabled applications accessing objects on StorageGRID experience failures during preflight (OPTIONS) requests, resulting in blocked access or CORS errors in browsers
  • Error message in browser

Access to image at 'https://object-storage/object' from origin 'https://xxxxx' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

  • Error in bycast logs on the grid:

ErrorMsg=InvalidRequest, ErrorType=Client, CustomErrorMessage={Found unsupported HTTP method in CORS configuration. Unsupported method is OPTIONS}, Details={AllowedMethod contains unsupported method.}

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