HDF5 on S3 is supported by GDAL vsis3/ interface. Thus, Hyrax doesn't have to be used. Read and convert directly from S3.
- Put HDF5/netCDF-4 on a S3 bucket. This can be done by CUMULUS.
- Set GDAL AWS parameters.
- If EC2 instance is used and EC2 instance has S3 bucket access IAM role, you can skip this step.
- Trigger GDAL-python lambda function that can perform transformation.