SAM Ambari ConnectionException

[#1]

HDF Version = 3.0

Tutorial# tutorial-830

I am following this tutorial (URL - https://hortonworks.com/tutorial/real-time-event-processing-in-nifi-sam-schema-registry-and-superset.... Step#5 of this tutorial requires to configure a Service Pool.

1. After entering Ambari URL = http://sandbox-hdf.hortonworks.com:9080/api/v1/clusters/Sandbox and Username/Password = admin/admin, it gives me javax.ws.rs.ProcessingException on top right corner (See attached ambarierror.png)

Please advise if I am missing anything.

[#2]

David - Thanks for responding. I tried 127.0.0.1 and it doesn't work. BTW, with HDF Sandbox Ambari opens at port 9080.

If I directly try to access this Ambari URL in a separate browser tab, Ambari responds back with JSON data. So it doesn't look like connectivity issue. Maybe it is some internal application (SAM) issue.

[#3]

It works at port 8080 instead of port 9080. So by changing URL to http://sandbox-hdf.hortonworks.com:8080/api/v1/clusters/Sandbox, I was able to add the Service Pool.