Many scientific datasets stored on secure HPC systems and servers are accessible via the Globus file transfer service. Globus uses a proprietary file transfer protocol, making it somewhat challenging to integrate with an open-data system like Pangeo Forge. In general, Globus file transfers require interaction with the Globus APIs, which requires accounts and authentication. Full support for Globus is on our roadmap. In the meantime, we recommend the following workaround.

To ingest files from Globus with Pangeo Forge, you must create a fully public Guest Collection and access the files via HTTPS. The specific steps are as follows:

  • Verify that the Globus endpoint you want to transfer from uses Globus Connect Server V5. This method will not work with earlier Globus versions (e.g. V4).

  • Open the Globus App and use the File Manager to navigate to the directory you want to share.

  • Create a Public Guest Collection. Follow the Globus HOWTO instructions for

  • Your data are now accessible via HTTPS. However, you need to figure out the URL. The easiest way to do this is via the Globus App. Right click on a specific file (not a directory!) within your Guest Collection and click “Get Link”, then choose the option for “download the file directly”. It should show an HTTPS link. Based on this link, you should be able to infer the relevant pattern for all your URLs. (For more details on HTTPS URLs, review the Globus docs on HTTPS Access to Collections.)

From here on, you should be able to point to your Globus files using standard HTTPS URLs. You can proceed to create a File Pattern for your recipe.