Hi, if you encounter authentication error the reason might be due to your application not able to see your kerberos files.

Can you add -Dsun.security.krb5.debug=true to env.java.opts to add more debugging?

Can you also check from Flink application logs if it sees your jaas config file? And the keytab inside the jaas config file?

Have you added the path of jaas file as part of yarnship too?