@Christian van den Heever Can you copy the whole error log including the part of the error before "org.apache.ambari.server.view.IllegalClusterException:Failed to get cluster information associated with this view instance" ... View more

@Ritesh jain What is the entry of your hosts file like? Can you share it ! ... View more

@Bhavin Tandel The below link should resolve your problem Root Cause of the Exception: java.security.cert.CertificateException: No name matching host found ... View more

@mqureshi But nevertheless its good practice to have password less connection between the nodes.Incase you use pdsh or other cluster management tools it makes life easier !!! ... View more

@Sunile Manjee Just tried on my cluster $ kdestroy [root@host ~]# sudo su - smanjee [smanjee@host ~]$ kinit Password for smanjee@HORTONWORKS: [smanjee@host ~]$ klist Ticket cache: FILE:/tmp/krb5cc_49393 Default principal: smanjee@HORTONWORKS Valid starting Expires Service principal 11/28/16 17:06:44 11/29/16 03:06:44 krbtgt/ HORTONWORKS@HORTONWORKS Tell me whether it worked out for you ... View more

@Junaid mukhtar The base memory requirement for sandbox 2.5 is 8 GB ! but all the same at least it should fire up but perform badly. Can you attach a screenshot. What is the sandbox setup like ? You will net to tweak the network check the attached screenshot from my 2.5 Sandbox Hope that helps ... View more

@Raf Mohammed Here is an example visualiszation of tweets with Solr and Zepplin dashboard of tweets ... View more

@Marco Chou If you are using the sandbox 2.5 I think the default username password is root/hadoop You can then change the root password # passwd Then thereafter you can #su - hdfs ... View more

@Bibhas Burman You seem to have run out of disk space ! CAn you run this command and check the output assuming you are root # su - hdfs $ hdfs dfsadmin -report or hdfs dfs -du -h / ... View more