https://community.cloudera.com/t5/Support-Questions/Found-Error-when-install-the-CDP-Trial-Version/m-p/296713#M218372 <P>Hi&nbsp;<a href="https://community.cloudera.com/t5/user/viewprofilepage/user-id/12296">@Bender</a>&nbsp;</P><P>&nbsp;</P><P>Hi Ferenc,</P><P>&nbsp;</P><P>1. To overcome the&nbsp; Error “message “Null value(s) passed to lookup by non-nullable natural-id”</P><P>&nbsp;</P><P>I add &nbsp;the ip and hostname to these files &nbsp;:</P><P>&nbsp;&nbsp;/etc/hostname</P><P>xxx.xxx.xx.xx&nbsp;&nbsp;&nbsp;&nbsp; test.testing.com</P><P>&nbsp;</P><P>&nbsp;/etc/hosts</P><P>127.0.0.1&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;localhost localhost.localdomain localhost4 localhost4.localdomain4</P><P>xxx.xxx.xx.xx &nbsp;test.testing.com&nbsp;&nbsp;&nbsp;&nbsp; test</P><P>&nbsp;</P><P>&nbsp;/etc/sysconfig/network :</P><P>NETWORKING=yes</P><P>NETWORKING_IPV6=no</P><P>HOSTNAME= test.testing.com</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P><P>2. For "Error 404 command has no file attached" message .</P><P>It occurs when I run Inspect Network Performance,</P><P>&nbsp;</P><P>Does it occur when you change the scope by any chance? No</P><P>&nbsp;</P><P>Do you get the expected results apart from the error message displayed, please?</P><P>It will show the message</P><P>&nbsp;“Insufficient hosts in cluster Cluster 1.Cluster must have at least 2 hosts to run performance inspector.”</P><P>&nbsp;</P><P>Regards,</P><P>BSST</P> Wed, 27 May 2020 12:16:57 GMT BSST 2020-05-27T12:16:57Z