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I am trying to do some stuff with Airflow.I have installed it with pip(latter in a virtual) but problem is when I want to start webserver.

airflow webserver -p 8080
[2017-07-29 12:20:45,913] [4585] {models.py:167} INFO - Filling up the DagBag from /home/milenko/airflow/dags
Running the Gunicorn Server with:
Workers: 4 sync
Host: 0.0.0.0:8080
Timeout: 120
Logfiles: - -
=================================================================            
[2017-07-29 12:20:46,950] {__init__.py:57} INFO - Using executor SequentialExecutor
[2017-07-29 12:20:47 +0200] [4590] [INFO] Starting gunicorn 19.3.0
[2017-07-29 12:20:47 +0200] [4590] [ERROR] Connection in use: ('0.0.0.0', 8080)
[2017-07-29 12:20:47 +0200] [4590] [ERROR] Retrying in 1 second.
[2017-07-29 12:20:48 +0200] [4590] [ERROR] Connection in use: ('0.0.0.0', 8080)
[2017-07-29 12:20:48 +0200] [4590] [ERROR] Retrying in 1 second.
[2017-07-29 12:20:49 +0200] [4590] [ERROR] Connection in use: ('0.0.0.0', 8080)
[2017-07-29 12:20:49 +0200] [4590] [ERROR] Retrying in 1 second.
[2017-07-29 12:20:50 +0200] [4590] [ERROR] Connection in use: ('0.0.0.0', 8080)
[2017-07-29 12:20:50 +0200] [4590] [ERROR] Retrying in 1 second.
[2017-07-29 12:20:51 +0200] [4590] [ERROR] Connection in use: ('0.0.0.0', 8080)
[2017-07-29 12:20:51 +0200] [4590] [ERROR] Retrying in 1 second.
[2017-07-29 12:20:52 +0200] [4590] [ERROR] Can't connect to ('0.0.0.0', 8080)

With netstat I got this output

tcp6       0      0 :::8080                 :::*                    LISTEN      1637/java

How to solve this?I have read somewhere that Gunicorn Server is not suited for 8080 port but all Airflow tutorials point it that way.

Michael Hampton
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MishaVacic
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1 Answers1

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Either stop the Java application that uses port 8080 already or change the port for Airflow.

Not suitable for port 8080 is pretty vague and it shouldn't matter at all, but you might have to change the connection settings on the client side too.

Thomas
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  • Change to which port? – MishaVacic Jul 30 '17 at 14:01
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    Just pick a free one. I don't know which ports are already in use on your machine. But you can get an overview as `root` with `netstat` or test it directly with `lsof -i:8081` e.g. – Thomas Jul 30 '17 at 14:02