Airflow Docker - Webserver not starting

Apache Airflow version: 2.0.2

Environment:

• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release): Ubuntu 20.04.2 LTS

Hi there,

I’m running Airflow via Docker using the official docker-compose image, and whilst everything seems to work fine, the webserver gets stuck in an endless loop of:

Whilst the image suggests port 8080 is taken, it is not. Nonetheless, I have tried forcing a different external port:

airflow-webserver:
    <<: *airflow-common
    command: webserver
    ports:
      - 5050:8080

And the problem persists.

After a bit more investigation, I found out that apparently, both the scheduler and webserver are using the same port (see image below), unless I’m misinterpreting the log. Is this supposed to happen?

[potiuk]

Exit 137 is almost always Out-of-memory. Here you can find the documentation about the right Docker settings for development: https://github.com/apache/airflow/blob/master/BREEZE.rst#docker-community-edition

[potiuk]

I think it misses the Memory setting thoughj, but I would recommend at least 4GB RAM /8GB comfortable allocated for Docker if you want to run containerised Airflow.