How to access files on hdfs

[IT CTO]

Hi,
I am using zeppelin to access files on hdfs

var myRDD = sc.textFile("hdfs://*nameserive1*:8020/data/myfile.txt")
This method works perfectly on spark-shell, also no problem accessing the
file using hadool CLI
hadoop fs -ls hdfs://*nameserive1*:8020/data/myfile.txt

but on zeppelin return an error:
*UnknownHostException nameservice1*

What is wrong here?
Eran
-- 
Eran | "You don't need eyes to see, you need vision" (Faithless)