I started the Cloudera VM normally, But when I am doing a list on the files in HDFS, I am getting a Connection Exception as follows:

[cloudera@quickstart ~]$ hadoop fs -ls /user/
ls: Call From quickstart.cloudera/127.0.0.1 to quickstart.cloudera:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

I guess it is because of the Hadoop services not running but can somebody please suggest, when i am starting the CLoudera VM as required why getting this error?