Set up API user
Modify node’s tomcat-users.xml. i.e add n4api user like below:
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
<role rolename="tomcat"/>
<role rolename="role1"/>
<role rolename="n4api"/>
<user username="tomcat" password="tomcat" roles="tomcat"/>
<user username="both" password="tomcat" roles="tomcat,role1"/>
<user username="role1" password="tomcat" roles="role1"/>
<user username="n4api" password="showmeinfo" roles="n4api"/>
</tomcat-users>