https://community.cloudera.com/t5/Support-Questions/Got-500-Error-when-trying-to-view-status-of-a-running/m-p/29703#M40437 <P>It doesn't look like we have any restrictions on our NodeManager instances. &nbsp;We only have one outbound security rule in all our groups with the following permissions.</P><P>&nbsp;</P><P>Ports: ALL</P><P>Protocols: ALL</P><P>Source: 10.0.0.0/8</P> Thu, 16 Jul 2015 23:25:46 GMT Dustin 2015-07-16T23:25:46Z