Hello @divyank  Below error shows PAM authentication is configured  ERROR org.apache.zeppelin.rest.LoginRestApi: Exception in login: org.apache.shiro.authc.AuthenticationException: Authentication failed for PAM.   Can you please make sure zeppelin user has read permission on /etc/shadow file on zeppelin host and also create user if does not exist at OS level using below commands # useradd <username> (to create user) # passwd <username> (to set the password)  Ex: # useradd test       # passwd test After creating user try login to zeppelin ui with above created credentials ... View more

Hello @vec  If you found  the suggestions/solutions provided helped you with solving your issue  please take a moment to login and click "Accept as Solution" on one or more of them that helped. Thank you, ... View more

@vec  file:/ represents the local file system. Caused by: java.io.IOException: mkdir of file:/user/history/done failed     ... View more

Hello @vec It seems like it is trying to use a local file system instead of HDFS. Can you check what the value is set for hdfs_service in CM -> YARN -> Configuration > hdfs_service ? Make sure it is set to use "hdfs"  ... View more

Hello @snm1523  To clear the old topologies follow below steps Go to knox host and delete the old topologies from  /var/lib/knox/gateway/conf/descriptors and /var/lib/knox/gateway/conf/topologies and Restart knox service ... View more