Even i faced the same problem while upgrading the HDP version. I just logged into Ranger UI as admin user, and in the user section i reset the same password for "admin" and "amb_ranger_admin" users and restarted ranger service. This worked for me. ... View more

Bump. Any recommendations to this above question? We are also looking for such a solution. ... View more

So how do i create a policy in Ranger for a specific user and see the policy implemented in e.g. HDFS or Hive? Just create the user in both Ambari console and Ranger with the same username? The passwords have different formats though. ... View more

@Prakash Punj If you are using MySQL then you definitely followed the below steps! The password in my case was "rangerdba" on the UI if you key in the password you used during the setup all should be fine ,otherwise you strictly need to do the initail MySQL setup corrcetly ... View more

Thanks @Neeraj Sabharwal and @Saurabh Kumar. I think it would be helpful to identify users and their jobs running. May be in future release of Ambari.. ... View more

@Prakash Punj Looking forward to hear your feedback on Ranger ...Personally, I love Ranger 🙂 ... View more

@Prakash Punj Did you copy the file locally instead hdfs as I mentioned in my reply? ... View more

@Prakash Punj This happens when keystore where certificates were imported is GKR type instead of JKS. Recreate the keystore, import certificates (do not use self signed certificates in production environment) and run security setup for ambari again ... View more

@Prakash Punj Help me to close this thread by accepting one of the best answers. ... View more

a. ambari-metrics-monitor status b. ambari-metrics-monitor stop (if it is running) c. Check the ambari-metrics-collector/hbase-tmp directroy path in Ambari AMS config d. Move the hbase zk temp directory to somewhere mv /hadoop/journalnode/var/lib/ambari-metrics-collector/hbase-tmp/zookeeper/* /tmp/ams-zookeeper-backup/ e. Restart AMS from the Ambari That should resolve the issue Cheers, Pravat Sutar ... View more