andkret / astronomer

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Overview

Welcome to Astronomer! This project was generated after you ran 'astro dev init' using the Astronomer CLI. This readme describes the contents of the project, as well as how to run Apache Airflow on your local machine.

Project Contents

Your Astro project contains the following files and folders:

  • dags: This folder contains the Python files for your Airflow DAGs. By default, this directory includes two example DAGs:
    • example_dag_basic: This DAG shows a simple ETL data pipeline example with three TaskFlow API tasks that run daily.
    • example_dag_advanced: This advanced DAG showcases a variety of Airflow features like branching, Jinja templates, task groups and several Airflow operators.
  • Dockerfile: This file contains a versioned Astro Runtime Docker image that provides a differentiated Airflow experience. If you want to execute other commands or overrides at runtime, specify them here.
  • include: This folder contains any additional files that you want to include as part of your project. It is empty by default.
  • packages.txt: Install OS-level packages needed for your project by adding them to this file. It is empty by default.
  • requirements.txt: Install Python packages needed for your project by adding them to this file. It is empty by default.
  • plugins: Add custom or community plugins for your project to this file. It is empty by default.
  • airflow_settings.yaml: Use this local-only file to specify Airflow Connections, Variables, and Pools instead of entering them in the Airflow UI as you develop DAGs in this project.

Deploy Your Project Locally

  1. Start Airflow on your local machine by running 'astro dev start'.

This command will spin up 4 Docker containers on your machine, each for a different Airflow component:

  • Postgres: Airflow's Metadata Database
  • Webserver: The Airflow component responsible for rendering the Airflow UI
  • Scheduler: The Airflow component responsible for monitoring and triggering tasks
  • Triggerer: The Airflow component responsible for triggering deferred tasks
  1. Verify that all 4 Docker containers were created by running 'docker ps'.

Note: Running 'astro dev start' will start your project with the Airflow Webserver exposed at port 8080 and Postgres exposed at port 5432. If you already have either of those ports allocated, you can either stop your existing Docker containers or change the port.

  1. Access the Airflow UI for your local Airflow project. To do so, go to http://localhost:8080/ and log in with 'admin' for both your Username and Password.

You should also be able to access your Postgres Database at 'localhost:5432/postgres'.

Deploy Your Project to Astronomer

If you have an Astronomer account, pushing code to a Deployment on Astronomer is simple. For deploying instructions, refer to Astronomer documentation: https://docs.astronomer.io/cloud/deploy-code/

Contact

The Astronomer CLI is maintained with love by the Astronomer team. To report a bug or suggest a change, reach out to our support.

Steps to setup this project:

  • create Astro account
  • create deployment
  • setup Astro cli
  • create Github repo and clone it
  • go to repo folder and initialize the Astro project
  • start the dev environment
  • open dev environment localhost:8080
  • look at the code and then do a manual astro deploy
  • or set dad deployment true with astro deployment update --dag-deploy enable and then use astro deploy --dags to just deploy the dags
  • go to the deployment and click top right to open airflow in the cloud. Toggle enable to let the flow run.
  • go back to astro cloud Look at the stats and start a manual run there.
  • create a Access token for the workspace
  • create a GitHub Action with this template deploy-astro. Add the deployment ID and the access token
  • GitHub add secrets & variables the access token variable name: ASTRO_API_TOKEN
  • make code changes and create pull request
  • check status of the github action and see the changed results in the cloud Airflow code.

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