Setting up a connection

Procedure

Create a keytab for the user "kuser1". You can use the kadmin.local command line interface to add principals and create keytab files, as shown shown below.
Retrieve the keytab file into the client machine. Use Talend tSCPGet component or retrieve it manually with the UNIX cp command.
In this example, cp command is used to move the keytab file to the UNIX home directory of the "kuser1" user where it has the read access to the keytab file.
```
[root@quickstart cloudera]# cp /tmp/kuser1.keytab /home/kuser1
```
In the Integration perspective of the Talend Studio, create an empty Job.
Drop tHDFSConnection into the workspace, which will be used to connect Talend Studio to the Hadoop cluster.
Double-click tHDFSConnection to open its Component view.
In the Version area, select the distribution to be connected to.

In this scenario, it is Cloudera from the Distribution list and Cloudera CDH5.4 from the Hadoop version list.
In the NameNode URI field, enter the location of the NameNode. If you are using WebHDFS, the location should be webhdfs://masternode:portnumber; WebHDFS with SSL is not supported yet.

In this example, it is hdfs://quickstart.cloudera:8020.
Select Use Kerberos authentication and enter nn/_HOST@EXAMPLE.COM in the NameNode principal field.

Information noteTip: You can find the NameNode principal value in the hdfs-site.xml file of the cluster you are using.
Select the Use a keytab to authenticate check box.
In the Principal field, enter the principal name of the keytab file.
It is kuser1 in this example.
In the Keytab field, enter the path of, or browse to the keytab file retrieved in the previous section.

Did this page help you?

If you find any issues with this page or its content – a typo, a missing step, or a technical error – let us know how we can improve!

Leave your feedback here