Adding below configs at advanced-topology(ambari ui --> knox --> configs ) will work. <service> <role>AMBARIUI</role> <url>http://bakumar-bkumar-dlm.openstacklocal:8080</url> </service> <service> <role>AMBARI</role> <url>http://bakumar-bkumar-dlm.openstacklocal:8080/</url> </service> And then restart the knox service from UI. Then access the Knox gateway to access ambari ui through gateway. Ex: https://hdp21.openstacklocal:8443/gateway/default/ambari ... View more