Pyspark Zeppelin – Fail to open PythonInterpreter – Debian

I am new to Zeppelin and Pyspark.

I have tried in vain to get Zeppelin to run with Pyspark.

My setup:

• 4 x Raspberry 4(8GB)
• Ubuntu Server 64bit 20.04
• Hadoop: 3.2.2
• Yarn
• Spark 3.1.1 & Hadoop integrated
• Zeppelin 0.9

Pi01 as Master Pi02-04 as Worker. Spark installed on all Pi.

Hadoop & Yarn are running without any problems.
Pyspark shell runs and I can execute commands.

But same command in zeppelin fails..

java.io.IOException: Cannot run program "python": error=2, No such file or directory

However, with Zeppelin %Pyspark as well as %python does not work. I have now searched for many hours but have not found a solution (switching from Debian to Ubuntu and back again).

I also tried to access the Spark Master from my Win10 PC with Jupyter Notebook but I don’t know how to do that and finally gave up.

Any Ideas?

I appreciate your help.