https://community.cloudera.com/t5/Support-Questions/Username-and-Password-for-Resource-Manager-WebUI/m-p/321504#M228428 <P><a href="https://community.cloudera.com/t5/user/viewprofilepage/user-id/70598">@USMAN_HAIDER</a>&nbsp;<BR />There is this step below did you perform that?</P><P><SPAN>Kerberos must be specified as the security mechanism for Hadoop infrastructure, starting with the HDFS service. Enable Cloudera Manager Server security for the cluster on an HDFS service. After you do so, the Cloudera Manager Server automatically enables Hadoop security on the MapReduce and YARN services associated with that HDFS service.</SPAN></P><LI-CODE lang="markup">In the Cloudera Manager Admin Console: Select Clusters &gt; HDFS-n. 1.Click the Configuration tab. 2.Select HDFS-n for the Scope filter. 3.Select Security for the Category filter. 4.Scroll (or search) to find the Hadoop Secure Authentication property. 5.Click the Kerberos button to select Kerberos:</LI-CODE><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Shelton_0-1627245224689.png" style="width: 400px;"><img src="https://community.cloudera.com/t5/image/serverpage/image-id/31962i00EC30588952205E/image-size/medium?v=v2&amp;px=400" role="button" title="Shelton_0-1627245224689.png" alt="Shelton_0-1627245224689.png" /></span></P><P>Please revert</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P> Sun, 25 Jul 2021 20:34:01 GMT Shelton 2021-07-25T20:34:01Z