@bhara Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future. Thanks. ... View more

The message means that the authentication is valid, but the user is not authorized to use the topic. Can you confirm what authorizer are you using and the current oauth configuration?   ... View more

Its ListFile. ... View more

@shamika  NiFi based authorization is case sensitive. 2023-07-12 10:46:40,800 INFO [NiFi Web Server-19] o.a.n.w.a.c.AccessDeniedExceptionMapper identity[myuser], groups[bigG, bigdGer] does not have permission to access the requested resource. No applicable policies could be found. Returning Forbidden response the nifi-user.log is telling you that your successfully authenticated user "myuser" is known by NiFi to belong to groups "bigG" and "bigdGer".  In Ranger you'll need to make sure that yoru user "myuser" or one of these groups "bigG" and/or "bigdGer" has been authorized for "READ" on the "/flow" NiFi resource Identifier.  If Ranger has the group as "bigg" or "BIGG", "bigDGER", etc it will not work because NiFi is case sensitive. You could also share your authorizers.xml if you'd like use to verify your configuration there. If you found that the provided solution(s) assisted you with your query, please take a moment to login and click Accept as Solution below each response that helped. Thank you, Matt ... View more

How did anyone solve this issue? I was currently trying to solve similar issue via nifi api (Postman) ... View more

Thank you Matt sorry for the super delay response but it's very helpful ... View more

Hello Matt, Thank you ! this solved the error (now I'm facing another one, but will figure it out 🙂 ). For further reference I had to configure those 3 lines in nifi.properties : nifi.security.identity.mapping.pattern.dn=^CN=(.*?), OU=(.*?) nifi.security.identity.mapping.transform.dn=NONE nifi.security.identity.mapping.value.dn=$1@$2   Thanks. Vince. ... View more

Can you share a screenshoot of current users listed on NiFI UI? Are the node listed?  Also provide the related failed authorization messages from nifi-user.log please. ... View more