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# Helm Chart for Apache Airflow

[![Artifact HUB](https://img.shields.io/endpoint?url=https://artifacthub.io/badge/repository/apache-airflow)](https://artifacthub.io/packages/search?repo=apache-airflow)

[Apache Airflow](https://airflow.apache.org/) is a platform to programmatically author, schedule and monitor workflows.

## Introduction

This chart will bootstrap an [Airflow](https://airflow.apache.org) deployment on a [Kubernetes](http://kubernetes.io)
cluster using the [Helm](https://helm.sh) package manager.

## Requirements

- Kubernetes 1.30+ cluster
- Helm 3.0+
- PV provisioner support in the underlying infrastructure (optionally)

## Features

* Supported executors (all Airflow versions): ``LocalExecutor``, ``CeleryExecutor``, ``KubernetesExecutor``
* Supported executors (Airflow version ``2.11.X``): ``LocalKubernetesExecutor``, ``CeleryKubernetesExecutor``
* Supported multiple Executors (``2.11+``)
* Supported AWS executors with AWS provider version ``8.21.0+``:
   * ``airflow.providers.amazon.aws.executors.batch.AwsBatchExecutor``
   * ``airflow.providers.amazon.aws.executors.ecs.AwsEcsExecutor``
* Supported Edge executor with edge3 provider version ``1.0.0+``:
   * ``airflow.providers.edge3.executors.EdgeExecutor``
* Supported Airflow version: ``2.11+``, ``3.0+``
* Supported database backend: ``PostgreSQL``, ``MySQL``
* Autoscaling for ``CeleryExecutor`` provided by KEDA
* ``PostgreSQL`` and ``PgBouncer`` with a battle-tested configuration
* **Security enhancements**:
   * Container-specific Service Account Token Volume configuration implementing Principle of Least Privilege
   * Only scheduler containers receive API access; init and sidecar containers operate without tokens
   * Defense-in-depth security with both ServiceAccount and Pod-level controls
   * Compatibility with security policies like Kyverno and compliance frameworks
* Monitoring:
   * StatsD/Prometheus metrics for Airflow
   * Prometheus metrics for PgBouncer
   * Flower
* Automatic database migration after a new deployment
* Administrator account creation during deployment
* Kerberos secure configuration
* One-command deployment for any type of executor. You don't need to provide other services e.g. Redis/Database to test the Airflow.

## Documentation

Full documentation for Helm Chart (latest **stable** release) lives [on the website](https://airflow.apache.org/docs/helm-chart/).

> Note: If you're looking for documentation for main branch (latest development branch): you can find it on [s.apache.org/airflow-docs/](http://apache-airflow-docs.s3-website.eu-central-1.amazonaws.com/docs/helm-chart/stable/index.html).
> Source code for documentation is in [../docs/helm-chart](https://github.com/apache/airflow/tree/main/docs/helm-chart)
>

## Contributing

Want to help build Apache Airflow? Check out our [contributing documentation](https://github.com/apache/airflow/blob/main/contributing-docs/README.rst).