Thanks a lot for the quick and clear answer!
I'm in a weird constrained setup with a NSF mount for /opt/clearml where I can't change the permissions easily but thanks for your answer. I'll contact people on my side to change the permissions instead of recompiling. This one still is quite confusing to me. I did what you suggested. I also created the credential in localhost:8080/settings/workspace-configuration and set it properly in /opt/clearml.conf . I tested with permission root:root and 1000:1000 on that file and the logs of the agent service always say the same thing as before: {"meta":{"id":"10d64337cada42949b0bb40f1ce765fa","trx":"10d64337cada42949b0bb40f1ce765fa","endpoint":{"name":"debug.ping","requested_version":"2.20","actual_version":"1.0"},"result_code":200,"result_subcode":0,"result_msg":"OK","error_stack":"","error_data":{}},"data":{"msg":"ClearML server"}}CLEARML_API_ACCESS_KEY was not provided, service will not be started Got it!