title: ambari + API syntax in order to change the parameters of the ambari services
body: <p>In Ambari cluster GUI  ( <strong>Version 2.5.0.3</strong> ) , each service has the Config button </p>
  
  <p>And when we click on Config button we can see the list of all relevant parameters and their values</p>
  
  <p>For example YARN service have the parameter - Minimum Container Size (Memory) in MB</p>
  
  <p>Of course we can change from the ambari GUI the values of the parameters …</p>
  
  <p>But we want to automate the changing of the values by API commands under bash script</p>
  
  <p>I searched in google to find some info about the API that change the values under parameters , but without success</p>
  
  <p>I’ll appreciate to get answers about this,</p>