check if ambari is ready

By -
https://ambari.apache.org/1.2.0/installing-hadoop-using-ambari/content/ambari-chap2-3.html\

3. Start the Ambari Server
To start the Ambari Server:

ambari-server start
To check the Ambari Server processes:

ps -ef | grep Ambari
To stop the Ambari Server:

ambari-server stop

https://cwiki.apache.org/confluence/display/AMBARI/Ambari+Shell


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