buun-stack/airflow/airflow-values.gomplate.yaml

useStandardNaming: true

webserverSecretKey: {{ .Env.AIRFLOW_WEBSERVER_SECRET_KEY }}

{{- if eq (.Env.AIRFLOW_ENV_SECRETS_EXIST | default "false") "true" }}
# Extra envFrom for all Airflow containers
extraEnvFrom: |
  - secretRef:
      name: airflow-env-secret
{{- end }}

executor: CeleryExecutor

# Custom Airflow configuration
config:
  logging:
    # Enable debug logging for troubleshooting
    # logging_level: DEBUG
  scheduler:
    # Process DAG files more frequently (30 seconds instead of default 30)
    min_file_process_interval: 30
    # Number of processes to parse DAGs in parallel
    parsing_processes: 2
    # Scan for new DAG files every 10 seconds instead of 300
    dag_dir_list_interval: 10

apiServer:
  replicas: 1
  apiServerConfigConfigMapName: airflow-api-server-config
  env:
    - name: AIRFLOW_OAUTH_CLIENT_ID
      valueFrom:
        secretKeyRef:
          name: airflow-oauth-secret
          key: client_id
    - name: AIRFLOW_OAUTH_CLIENT_SECRET
      valueFrom:
        secretKeyRef:
          name: airflow-oauth-secret
          key: client_secret
    - name: KEYCLOAK_HOST
      value: "{{ .Env.KEYCLOAK_HOST }}"
    - name: KEYCLOAK_REALM
      value: "{{ .Env.KEYCLOAK_REALM }}"

webserver:
  enabled: true
  replicas: 1

createUserJob:
  useHelmHooks: false
  applyCustomEnv: false

migrateDatabaseJob:
  useHelmHooks: false
  applyCustomEnv: false

images:
  migrationsWaitTimeout: 180

# Install additional packages using init containers
workers:
  extraInitContainers:
    - name: install-packages
      image: apache/airflow:3.0.2
      command:
        - /bin/bash
        - -c
        - |
          pip install --target /opt/airflow/site-packages {{ .Env.AIRFLOW_EXTRA_PACKAGES }}
      volumeMounts:
        - name: extra-packages
          mountPath: /opt/airflow/site-packages
      securityContext:
        allowPrivilegeEscalation: false
        runAsNonRoot: true
        runAsUser: 1000
        runAsGroup: 0
        seccompProfile:
          type: RuntimeDefault
        capabilities:
          drop:
            - ALL
  extraVolumes:
    - name: extra-packages
      emptyDir: {}
  extraVolumeMounts:
    - name: extra-packages
      mountPath: /opt/airflow/site-packages
  env:
    - name: PYTHONPATH
      value: "/opt/airflow/site-packages:$PYTHONPATH"
  # Override args to fix Celery worker hostname issue
  # The HOSTNAME will be set automatically by Kubernetes for StatefulSet pods
  args:
    - bash
    - -c
    - |
      exec airflow celery worker --celery-hostname=${HOSTNAME}

scheduler:
  extraInitContainers:
    - name: install-packages
      image: apache/airflow:3.0.2
      command:
        - /bin/bash
        - -c
        - |
          pip install --target /opt/airflow/site-packages {{ .Env.AIRFLOW_EXTRA_PACKAGES }}
      volumeMounts:
        - name: extra-packages
          mountPath: /opt/airflow/site-packages
      securityContext:
        allowPrivilegeEscalation: false
        runAsNonRoot: true
        runAsUser: 1000
        runAsGroup: 0
        seccompProfile:
          type: RuntimeDefault
        capabilities:
          drop:
            - ALL
  extraVolumes:
    - name: extra-packages
      emptyDir: {}
  extraVolumeMounts:
    - name: extra-packages
      mountPath: /opt/airflow/site-packages
  env:
    - name: PYTHONPATH
      value: "/opt/airflow/site-packages:$PYTHONPATH"

dagProcessor:
  extraInitContainers:
    - name: install-packages
      image: apache/airflow:3.0.2
      command:
        - /bin/bash
        - -c
        - |
          pip install --target /opt/airflow/site-packages {{ .Env.AIRFLOW_EXTRA_PACKAGES }}
      volumeMounts:
        - name: extra-packages
          mountPath: /opt/airflow/site-packages
      securityContext:
        allowPrivilegeEscalation: false
        runAsNonRoot: true
        runAsUser: 1000
        runAsGroup: 0
        seccompProfile:
          type: RuntimeDefault
        capabilities:
          drop:
            - ALL
  extraVolumes:
    - name: extra-packages
      emptyDir: {}
  extraVolumeMounts:
    - name: extra-packages
      mountPath: /opt/airflow/site-packages
  env:
    - name: PYTHONPATH
      value: "/opt/airflow/site-packages:$PYTHONPATH"

flower:
  enabled: false

# StatsD configuration with Prometheus exporter
statsd:
  enabled: true
  securityContexts:
    pod:
      runAsNonRoot: true
      runAsUser: 65534
      runAsGroup: 65534
      fsGroup: 65534
      seccompProfile:
        type: RuntimeDefault
    container:
      allowPrivilegeEscalation: false
      runAsNonRoot: true
      runAsUser: 65534
      runAsGroup: 65534
      seccompProfile:
        type: RuntimeDefault
      capabilities:
        drop:
          - ALL

{{- if .Env.MONITORING_ENABLED }}
# Prometheus metrics configuration
metrics:
  enabled: true
  serviceMonitor:
    enabled: true
    interval: 30s
    selector:
      release: kube-prometheus-stack
{{- end }}

# Redis security context for restricted Pod Security Standard
redis:
  securityContexts:
    pod:
      runAsNonRoot: true
      runAsUser: 999
      runAsGroup: 999
      fsGroup: 999
      seccompProfile:
        type: RuntimeDefault
    container:
      allowPrivilegeEscalation: false
      runAsNonRoot: true
      runAsUser: 999
      runAsGroup: 999
      seccompProfile:
        type: RuntimeDefault
      capabilities:
        drop:
          - ALL

postgresql:
  enabled: false

data:
  metadataSecretName: airflow-metadata-connection

# DAG persistence configuration
dags:
  persistence:
    enabled: {{ .Env.AIRFLOW_DAGS_PERSISTENCE_ENABLED | default "true" }}
    {{- if eq (.Env.AIRFLOW_DAGS_STORAGE_TYPE | default "default") "nfs" }}
    existingClaim: airflow-dags-nfs-pvc
    {{- else }}
    existingClaim: airflow-dags-pvc
    {{- end }}

ingress:
  apiServer:
    enabled: true
    annotations:
      kubernetes.io/ingress.class: traefik
      traefik.ingress.kubernetes.io/router.entrypoints: websecure
    ingressClassName: traefik
    hosts:
      - name: {{ .Env.AIRFLOW_HOST }}
        tls:
          enabled: true

# Security contexts for restricted Pod Security Standard
# Also compatible with shared file system access (JupyterHub)
securityContexts:
  pod:
    runAsNonRoot: true
    runAsUser: 1000
    runAsGroup: 0
    fsGroup: 101
    seccompProfile:
      type: RuntimeDefault
  container:
    allowPrivilegeEscalation: false
    runAsNonRoot: true
    runAsUser: 1000
    runAsGroup: 0
    seccompProfile:
      type: RuntimeDefault
    capabilities:
      drop:
        - ALL