ERROR On Federating Process (ADMU0038E: The Deployment Manager's IP address resolves as 127.0.0.1)

The below Error is ocured whenever Federating the AppServer to Dmgr in different Linux Boxes 

ADMU0038E: The Deployment Manager's IP address resolves as 127.0.0.1, but the Deployment Manager is not on the local machine.  The Deployment Manager's host name configuration or DNS is configured incorrectly

Log File : [7/13/16 12:58:43:331 IST] 00000000 NodeFederatio E   ADMU0010E: Error obtaining repository client com.ibm.websphere.management.exception.AdminException: ADMU0038E: The Deployment Manager's IP address resolves as 127.0.0.1, but the Deployment Manager is not on the local machine.  The Deployment Manager's host name configuration or DNS is configured incorrectly.

at com.ibm.ws.management.tools.NodeFederationUtility.testLocalhost(NodeFederationUtility.java:2115)
at com.ibm.ws.management.tools.NodeFederationUtility.getFileTransferConfig(NodeFederationUtility.java:2084)
at com.ibm.ws.management.tools.NodeFederationUtility.getRepositoryClient(NodeFederationUtility.java:2124)
at com.ibm.ws.management.tools.NodeFederationUtility.doPreConfigUpdateProcessing(NodeFederationUtility.java:1147)
at com.ibm.ws.management.tools.NodeFederationUtility.doAddNode(NodeFederationUtility.java:745)
at com.ibm.ws.management.tools.NodeFederationUtility.runTool(NodeFederationUtility.java:546)
at com.ibm.ws.management.tools.AdminTool.executeUtility(AdminTool.java:272)
at com.ibm.ws.management.tools.NodeFederationUtility.main(NodeFederationUtility.java:302)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:600)
at com.ibm.wsspi.bootstrap.WSLauncher.launchMain(WSLauncher.java:213)


Problem Occurred : while creating Dmgr Profile given host name is localhost instead of host name (Ex. sample.test.com). So that Dmgr serverindex.xml file is created with host name as localhost

Solution : Replace the host name "localhost" to "sample.test.com" (sample.test.com is the host name of Dmgr IP)
Process : File path /opt/IBM/WebSphere/AppServer/profiles/PStagDmgr/config/cells/PStagDmgrCell01/nodes/WC_pprdstag_node/serverindex.xml, Open and change the host name from "localhost" to correct host name of the Dmgr installed Linux Box.

Reference  Link ;