Chainguard Container for airflow-bitnami

Apache Airflow is a platform to programmatically author, schedule, and monitor workflows as directed acyclic graphs (DAGs).

Chainguard Containers are regularly-updated, secure-by-default container images.

Download this Container Image

For those with access, this container image is available on cgr.dev:

docker pull cgr.dev/ORGANIZATION/airflow-bitnami:latest

Be sure to replace the ORGANIZATION placeholder with the name used for your organization's private repository within the Chainguard Registry.

Compatibility Notes

The Chainguard airflow-bitnami image provides compatibility with the Bitnami helm chart. It is a minimal image and contains only the minimum set of tools and dependencies needed to function.

Getting Started

We will use the upstream bitnami helm chart to deploy and test our image. The sample values.yaml:

global:
  security:
    allowInsecureImages: true
image:
  registry: cgr.dev
  repository: <ORG-NAME>
  tag: latest
# dags:
#   enabled: true
#   existingConfigmap: "my-dags-configmap"

It is possible to provide predefined DAGs for the instance of Airflow, as a Kubernetes ConfigMap. When using it, please uncomment the entire dags: section in values.yaml files above.

Sample ConfigMap:

# my-dags-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: my-dags-configmap
data:
  example_dag.py: |
    from airflow import DAG
    from airflow.operators.dummy_operator import DummyOperator
    from datetime import datetime

    default_args = {
        'owner': 'airflow',
        'start_date': datetime(2023, 1, 1),
        'retries': 1,
    }

    dag = DAG('example_dag', default_args=default_args, schedule_interval='@daily')

    start = DummyOperator(task_id='start', dag=dag)
    end = DummyOperator(task_id='end', dag=dag)

    start >> end

Helm install:

helm install airflow oci://registry-1.docker.io/bitnamicharts/airflow -f values.yaml

Any DAGs predefined in the ConfigMap will be configured for Airflow, but may need to be unpaused using the UI, API or CLI.

The Airflow UI can be made accessible by configuring the Ingress resource to expose the application at a specified URL.

Please see the Ingress documentation for the Helm chart for more details.

It is also possible to access the UI by port forwarding the web UI service from Kubernetes - such as:

kubectl port-forward svc/airflow-web 8080:8080

It will then be possible to access the UI from URL http://localhost:8080.

Documentation and Resources

• Airflow bitnami charts
• Apache Airflow official documentation

What are Chainguard Containers?

Chainguard Containers are minimal container images that are secure by default.

In many cases, the Chainguard Containers tagged as :latest contain only an open-source application and its runtime dependencies. These minimal container images typically do not contain a shell or package manager. Chainguard Containers are built with Wolfi, our Linux undistro designed to produce container images that meet the requirements of a more secure software supply chain.

The main features of Chainguard Containers include:

• Minimal design, without unnecessary software bloat
• Daily builds to ensure container images are up-to-date with available security patches
• High quality build-time SBOMs attesting to the provenance of all artifacts within the image
• Verifiable signatures provided by Sigstore
• Reproducible builds with Cosign and apko (read more about reproducibility)

For cases where you need container images with shells and package managers to build or debug, most Chainguard Containers come paired with a -dev variant.

Although the -dev container image variants have similar security features as their more minimal versions, they feature additional software that is typically not necessary in production environments. We recommend using multi-stage builds to leverage the -dev variants, copying application artifacts into a final minimal container that offers a reduced attack surface that won’t allow package installations or logins.

Learn More

To better understand how to work with Chainguard Containers, please visit Chainguard Academy and Chainguard Courses.

In addition to Containers, Chainguard offers VMs and Libraries. Contact Chainguard to access additional products.

Trademarks

This software listing is packaged by Chainguard. The trademarks set forth in this offering are owned by their respective companies, and use of them does not imply any affiliation, sponsorship, or endorsement by such companies.