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Serverless App Engine:Upload and download files via webshell

Last Updated:Jun 23, 2026

SAE provides a simplified Webshell in the console for viewing and debugging containers. In addition to Alibaba Cloud OSS, you can use the Webshell upload and download feature to transfer log files to and from SAE containers.

Background

SAE previously did not support downloading logs from within containers. As an alternative, you can configure the OSS command-line tool through SAE to upload and download logs. For more information, see Diagnose applications by using routine checks.

The webshell's built-in file upload and download feature is simpler and more efficient than using OSS.

Limitations

  • The webshell file upload and download feature is intended for temporary debugging only.

  • The maximum file size for uploads and downloads is 10 MB.

If you need persistent storage or your file is larger than 10 MB, we recommend that you use NAS or OSS. For more information, see Configure NAS storage and Configure OSS storage.

Procedure

  1. On the SAE Application List page, select a region and namespace at the top, and click the ID of the target application to open the application details page.

  2. On the Basic Information page, click the Instances tab.

  3. On the Instances tab, in the Default Group section, find your instance and click Webshell in the Actions column.

  4. In the upper-right corner of the Webshell dialog box, hover over the bt_download_and_upload_via_webshell icon and select Upload or Download.

    • Upload File

      1. In the Upload File dialog box, select the file and enter the Destination Path.

      2. Click Upload.

    • Download File

      1. In the Download File dialog box, enter the Destination Path.

      2. Click Download.