README.md

docker-airflow-spark

Docker with Airflow + Postgres + Spark cluster + JDK (spark-submit support) + Jupyter Notebooks

📦 The Containers

• airflow-webserver: Airflow webserver and scheduler, with spark-submit support.

  • image: docker-airflow2:latest (custom, Airflow version 2.2.4)
    • Based on python:3.7-stretch, puckel/docker-airflow and cordon-thiago/airflow-spark
  • port: 8080

• postgres: Postgres database, used by Airflow.

  • image: postgres:13.6
  • port: 5432

• spark-master: Spark Master.

  • image: bitnami/spark:3.2.1
  • port: 8081

• spark-worker[-N]: Spark workers (default number: 1). Modify docker-compose.yml file to add more.

  • image: bitnami/spark:3.2.1

• jupyter-spark: Jupyter notebook with pyspark support.

  • image: jupyter/pyspark-notebook:spark-3.2.1
  • port: 8888

🛠 Setup

Clone project

$ git clone https://github.com/pyjaime/docker-airflow-spark

Build airflow Docker

$ cd docker-airflow-spark/airflow/
$ docker build --rm -t docker-airflow2:latest .

Setup the sandbox

The sandbox will contain the folders where data will be persisted from the containers, and some test files. We will create the folder easily:

$ cd docker-airflow-spark/
$ cp -R sandbox-test/. ../sandbox/

Launch containers

$ cd docker-airflow-spark/
$ docker-compose -f docker-compose.yml up -d

Check accesses

• Airflow: http://localhost:8080
• Spark Master: http://localhost:8081
• Jupyter Notebook: http://localhost:8888 (follow the instructions to get a token)

👣 Additional steps

Create a test user for Airflow

$ docker-compose run airflow-webserver airflow users create --role Admin --username admin \
  --email admin --firstname admin --lastname admin --password admin

Edit connection from Airflow to Spark

• Go to Airflow UI > Admin > Edit connections
• Edit spark_default entry:
  • Connection Type: Spark
  • Host: spark://spark
  • Port: 7077

Test spark-submit from Airflow

Go to the Airflow UI and run the test_spark_submit_operator DAG :)

🎉 A big thank you

THANK YOU Thiago Cordon