Hi @therealsrikanth  I understand you want to enable Kerberos authentication in an open-source Hadoop cluster. Please refer to the following document to configure Kerberos authentication. https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/SecureMode.html ... View more

Hi @Scharan, I have not backed up the ambari DB, does it back up automatically? And if it does where can I find that back up? ... View more

Can you check database logs to see if there are any connection blocked messages? If possible, try restarting database service. ... View more

-rw-r--r-- 1 root root 1891110 Dec 6 2018 guava-13.0.1.jar there's jar file above in /usr/hdp/current/phoenix-server/lib path. ... View more

It looks similar to the KB Please follow the instructions in the KB.  ... View more

@vec  From the shared stack trace I can see python 2 is not installed + /opt/cloudera/cm-agent/service/../bin/python /opt/cloudera/parcels/CDH-7.1.7-1.cdh7.1.7.p0.15945976/lib/ranger-admin/db_setup.py /opt/cloudera/cm-agent/service/../bin/python: line 25: /usr/bin/python2: No such file or directory + '[' 127 == 0 ']' Can you install python2 and retry ranger installation ... View more

Hi @cloude, I changed 'ranger.usersync.ldap.referral' from 'ignore' to 'follow'. But it still doesn't work.. Thanks. ... View more

@Hadoop16 Can you share the stack trace of the error from knox gateway logs ... View more

I have MSQL and before the servers were turned off Beeline was working, but now it sends me this error message when I connect Beeline version 3.1.3 by Apache Hive beeline> !connect jdbc:hive2://10.32.14.86:10000/Default; the message is still Could not open connection to the HS2 server. Please check the server URI and if the URI is correct, then ask the administrator to check the server status. Error: Could not open client transport with JDBC Uri: jdbc:hive2://10.32.14.86:10000/Default;: java.net.ConnectException: Connection refused (state=08S01,code=0). I have already verified in detail all the hive-site.xlm communication files and all the others according to the manuals and they are correct, I have hiveserver & running and with hive I can connect to my databases. ... View more