Sometimes, it becomes little tricky to configure a nodemanager in a machine although it is quite simple. Follow the below steps:
DomainsFile=<DOMAIN_HOME>/nodemanager/nodemanager.domains
LogLimit=0
PropertiesVersion=12.2.1.3.0
AuthenticationEnabled=true
NodeManagerHome=/<Middleware_Home>/<Oracle_Home>/oracle_common/common/nodemanager
JavaHome=<JDK_HOME>
LogLevel=INFO
DomainsFileEnabled=true
ListenAddress=10.207.76.227
NativeVersionEnabled=true
ListenPort=5556
LogToStderr=true
weblogic.StartScriptName=startWebLogic.sh
SecureListener=true
LogCount=1
QuitEnabled=false
LogAppend=true
weblogic.StopScriptEnabled=false
StateCheckInterval=500
CrashRecoveryEnabled=false
weblogic.StartScriptEnabled=true
LogFile=<DOMAIN_HOME>/nodemanager/nodemanager.log
LogFormatter=weblogic.nodemanager.server.LogFormatter
ListenBacklog=50
KeyStores=CustomIdentityAndCustomTrust
CustomIdentityKeyStoreFileName=<CustomKeystorePath.jks>
CustomIdentityAlias=mwexpert.com
CustomIdentityKeyStorePassPhrase=<custompassword>
CustomIdentityKeyStoreType=JKS
CustomIdentityPrivateKeyPassPhrase=<custompassword>
Start the nodemanager using startNodeManager.sh