Hi @luobo2019 , Are you still facing the same issue after following the step 1 ? Can you please share the Ambari server logs when you see the message in the UI. Also please try to check the inspect element of the browser while replicating the issue.  ... View more

HI @rajilion , Thanks for reaching out to Cloudera community. Can you please test the Update and overwrite mentioned in the below article and let us know how it goes -    https://hadoop.apache.org/docs/stable/hadoop-distcp/DistCp.html ... View more

Hi @luobo2019 , Can you please try the below 2 things and let me know how it goes -  Resolution 1 -  Step 1: cat /etc/ambari-server/conf/ambari.properties | grep ambari-server.user. Know the user from above command.   Step 2: change user /var/run/ambari-server chown -R <output of above command> /var/run/ambari-server Resolution 2 - Take Ambari DB backup  1. Query the ambari.alert_current and ambari.alert_history tables, look at the 'definition_id' and 'alert_definition' columns in these tables. 2. Look at the alert_definitions table select definition_id from ambari.alert_definition; and check the definition IDs. 3. Look for any definition IDs referenced in the alert_current and alert_history tables that are not present in alert_definition. 4. In ambari.alert_current, remove any row that references a definition ID that is not present in alert_definition 5. In ambari.alert_history, remove any row that references a definition ID that is not present in alert_definition ... View more

Hi @bananaman , Can you please refer the below docs and enable the user search first and see if it helps.  https://docs.cloudera.com/cdp-private-cloud-base/7.1.3/security-ranger-authentication-unix-ldap-ad/topics/security-ranger-authentication-ad-integration-usersync.html   Also please try to run ldapsearch to see if it is able to list all the users.  ... View more

Hi @Kamal_Securonix , Can you please help us with the screenshot of the error and do you see anything in the CM server logs during the issue time ? ... View more