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Problem: .deb Upgrade Fails File Overwrite

Upgrading the Flow Data collector to the latest version on Debian-based distributions, such as Ubuntu, reports an error when trying to overwrite a file.

You can safely overwrite package files. Other files, that contain user-defined data or parameters, require you to restore your backup files after the upgrade.


In some cases, the /etc/juniper/app/appid.yml file cannot be overwritten.


  1. Backup your /etc/juniper directory.
  2. Use the command --force-overwrite when running the install command.