Enable low-level OPC-UA logging

this page is only relevant for opc ua collector versions older than 2 1 0 if the opc ua collector version is 2 1 0 or higher, you can simply set the loglevel to 'trace' linux edit the collector’s environment file /etc/systemd/system/environments/factry collector \<uuid> add opc debug=debug restart the collector view logs sudo journalctl u factry collector \<uuid> service f windows stop the collector service get the api token from the registry ( regedit ) at hkey local machine\system\currentcontrolset\services\factry collector \<uuid> in environment open a command window and set environment variables set opc debug=debug set api token=\<api token> run the collector binary manually (no flags) watch the logs in the command window restart the collector service when done