Can you more elaborate on "Hostname tied to the actual IP address?" and "Use "ifconfig -a" to see a listing of your network interfaces and choose one that has an actual IP address."   How do I know which hostname and ip address to use. Because while installing single node cluster of cloudera how would you know which hosts to specify?   Thank you! ... View more

Very well explained, thanks for the post~ ... View more

try add allow port on firewalld on host, this solved my prob $ firewall-cmd --zone=public --add-port=9000/tcp (Centos7) or $ service firewalld disable Hope this may help ... View more

in /etc/hosts for all nodes: put ip_adress   FQDN   DN  10.10.1.230 name.domain.com name   the FQDN must be before the name ... View more

Thank you so much. ... View more

yes, thank you, all working. I missed ';' at end of update statement. thanks again. ... View more

Hi, Can u reset the ambari-agent in all servers and try to register. amabri-agent reset <Ambari_host_name> ... View more

@Robin Dong You can check the "/etc/ambari-server/conf/ambari.properties" file to know exactly which DataBase your ambari is using and then accordingly you can login to the DB host and run/check the requested commands or the DB admin can assist with the queries. Example: (In my Case it is Postgres) # grep 'jdbc' /etc/ambari-server/conf/ambari.properties custom.postgres.jdbc.name=postgresql-9.3-1101-jdbc4.jar previous.custom.postgres.jdbc.name=postgresql-9.3-1101-jdbc4.jar server.jdbc.connection-pool=internal server.jdbc.database=postgres server.jdbc.database_name=ambari server.jdbc.postgres.schema=ambari server.jdbc.user.name=ambari server.jdbc.user.passwd=/etc/ambari-server/conf/password.dat . ... View more

I know this is an old post, but maybe it can still be usefull to someone. To start the standalone you need to pass both the worker config (connect-standalone.properties) and the connectors configurations (mongo_connector_config.properties in Robin's case). For someone with the same problem, bare in mind that for starting the standalone connector you need to pass ".properties" files. To update or add new connectors you would need to pass ".json" files. You can see in the confluent documentation page here. bin/connect-standalone worker.properties connector1.properties [connector2.properties connector3.properties ...] Vicente ... View more

thank you so much. even I need more time to digest it, I can tell this is what I need to know. thank you for spending time to help. Robin ... View more