title: Weblogic NodeManager Start Failure
body: <p>I've setup a weblogic cluster with 2 managed servers.In order to configure node manager on both nodes i've followed the related article : </p>
  
  <p><a href="http://www.oracle.com/webfolder/technetwork/tutorials/obe/fmw/wls/12c/12_2_1/01-12-001-ConfiguringandUsingNodeManager/Configuring_and_Using_NM.html" rel="nofollow noreferrer">http://www.oracle.com/webfolder/technetwork/tutorials/obe/fmw/wls/12c/12_2_1/01-12-001-ConfiguringandUsingNodeManager/Configuring_and_Using_NM.html</a></p>
  
  <p>with the following configuration :</p>
  
  <p>Machine-0 :</p>
  
  <pre><code> DomainsFile=/u01/app/oracle/config/domains/base_domain/Machine-
   0/nodemanager.domains
   LogLimit=0
   PropertiesVersion=12.1.3
   AuthenticationEnabled=true
   NodeManagerHome=/u01/app/oracle/config/domains/base_domain/Machine-0
   JavaHome=/opt/jdk1.8.0_131
   LogLevel=INFO
   DomainsFileEnabled=true
   StartScriptName=startWebLogic.sh
   ListenAddress=localhost
   NativeVersionEnabled=true
   ListenPort=5558
   LogToStderr=true
   SecureListener=false
   LogCount=1
   StopScriptEnabled=false
   QuitEnabled=false
   LogAppend=true
   StateCheckInterval=500
   CrashRecoveryEnabled=false
   StartScriptEnabled=true
   LogFile=/u01/app/oracle/config/domains/base_domain/Machine-
   0/nodemanager.log
   LogFormatter=weblogic.nodemanager.server.LogFormatter
   ListenBacklog=50
  </code></pre>
  
  <p>Machine-1 (the second managed server) has the same configuration with the exceptions of ports (5557) and name.
  Although node manager is successfully started on both machines (startNodeManager.sh on machine-0 and machine-1) from admin console on Machine-0 the following error occurs and node manager doesnt start :</p>
  
  <pre><code>weblogic.nodemanager.NMConnectException 
  </code></pre>
  
  <p>nodemanager.log of Machine-0 has no indications of errors or any helpful stuff.
  Any help would be appreciated.
  thanks in advance</p>