To be able to create profiling traces for Designate, client should be able to send special HTTP header that contains trace info. Don't worry no security issue here, trace information is signed by HMAC key that is setted in api-paste.ini. So only person that knows HMAC key is able to send proper header. Main patch (in Designate) is: https://review.opendev.org/c/openstack/designate/+/773574 Change-Id: I4b84ac1a5d4f84da3a38e4e0cb0990a54c6044ef