I am guessing that web sockets don’t run on a separate port anymore.  I took 
out nginx and now directly connecting to zeppelin which is running fine on port 
8001.  I see this error in the chrome browser -

WebSocket connection to 'ws://ec2-197.compute-1.amazonaws.com:8001/ws' failed: 
Error during WebSocket handshake: Unexpected response code: 403

Any clues anyone?

Best,
Jitender

> On Aug 19, 2015, at 1:16 PM, Jitender Aswani <jiten...@sparklinedata.com> 
> wrote:
> 
> Hello guys,  need some help from you. 
> 
> Did a new build (0.5 branch) this afternoon and started zeppelin on port 8001 
> using export ZEPPELIN_PORT=8001 in zeppelin-env.sh file. 
> Web-socket server should have started on 8002 but it didn't.  Chrome browser 
> is displaying following error in console. 
> 
> WebSocket connection to 'ws://ec2-52-4-253-197.compute-1.amazonaws.com/ws' 
> <ws://ec2-52-4-253-197.compute-1.amazonaws.com/ws'> failed: Error during 
> WebSocket handshake: Unexpected response code: 403
> 
> Checked for ports using netstat:
> 
> tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   
> LISTEN      
> tcp        0      0 :::8080                     :::*                        
> LISTEN      
> tcp        0      0 :::8081                     :::*                        
> LISTEN      
> tcp        0      0 :::8082                     :::*                        
> LISTEN      
> tcp        0      0 :::8083                     :::*                        
> LISTEN      
> tcp        0      0 :::8001                     :::*                        
> LISTEN      
> 
> I don’t see port 8002 here. No help from the logs.
> 
> No issues with the previous version of zeppelin. Port 8002 was active and 
> listening. 
> tcp        0      0 :::8080                     :::*                        
> LISTEN      
> tcp        0      0 :::8081                     :::*                        
> LISTEN      
> tcp        0      0 :::8082                     :::*                        
> LISTEN      
> tcp        0      0 :::8083                     :::*                        
> LISTEN      
> tcp        0      0 :::8001                     :::*                        
> LISTEN      
> tcp        0      0 :::8002                     :::*                        
> LISTEN      
> 

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