Airflow Helm deployment with Persistent Volume - Attempt

# Duplicate this file and put your customization here

##
## common settings and setting for the webserver
airflow:
  extraConfigmapMounts: []
  # - name: extra-metadata
  #   mountPath: /opt/metadata
  #   configMap: airflow-metadata
  #   readOnly: true
  #
  # Example of configmap mount with subPath
  # - name: extra-metadata
  #   mountPath: /opt/metadata/file.yaml
  #   configMap: airflow-metadata
  #   readOnly: true
  #   subPath: file.yaml


  ##
  ## Extra environment variables to mount in the web, scheduler, and worker pods:
  extraEnv:
  #  - name: AIRFLOW__CORE__FERNET_KEY
  #    valueFrom:
  #      secretKeyRef:
  #        name: airflow
  #        key: fernet_key
  #  - name: AIRFLOW__LDAP__BIND_PASSWORD
  #    valueFrom:
  #      secretKeyRef:
  #        name: ldap
  #        key: password


  ##
  ## You will need to define your fernet key:
  ## Generate fernetKey with:
  ##    python -c "from cryptography.fernet import Fernet; FERNET_KEY = Fernet.generate_key().decode(); print(FERNET_KEY)"
  ## fernetKey: ABCDABCDABCDABCDABCDABCDABCDABCDABCDABCD
  fernetKey: ""
  service:
    annotations: {}
    type: ClusterIP
    externalPort: 8080
    nodePort:
      http:
  ##
  ## The executor to use.
  ##
  executor: Celery
  ##
  ## set the max number of retries during container initialization
  initRetryLoop:
  ##
  ## base image for webserver/scheduler/workers
  ## Note: If you want to use airflow HEAD (2.0dev), use the following image:
  # image
  #   repository: stibbons31/docker-airflow-dev
  #   tag: 2.0dev
  ## Airflow 2.0 allows changing the value ingress.web.path and ingress.flower.path (see bellow).
  ## In version < 2.0, changing these paths won't have any effect.
  image:
    ##
    ## docker-airflow image
    repository: puckel/docker-airflow
    ##
    ## image tag
    tag: 1.10.4
    ##
    ## Image pull policy
    ## values: Always or IfNotPresent
    pullPolicy: IfNotPresent
    ##
    ## image pull secret for private images
    pullSecret:
  ##
  ## Set schedulerNumRuns to control how the scheduler behaves:
  ##   -1 will let him looping indefinitively but it will never update the DAG
  ##   1 will have the scheduler quit after each refresh, but kubernetes will restart it.
  ##
  ## A long running scheduler process, at least with the CeleryExecutor, ends up not scheduling
  ## some tasks. We still don’t know the exact cause, unfortunately. Airflow has a built-in
  ## workaround in the form of the `num_runs` flag.
  ## Airflow runs with num_runs set to 5.
  ##
  ## If set to a value != -1, you will see your scheduler regularly restart. This is its normal
  ## behavior under these conditions.
  schedulerNumRuns: "-1"
  ##
  ## Set schedulerDoPickle to toggle whether to have the scheduler
  ## attempt to pickle the DAG object to send over to the workers,
  ## instead of letting workers run their version of the code.
  ## See the Airflow documentation for the --do_pickle argument: https://airflow.apache.org/cli.html#scheduler
  schedulerDoPickle: true
  ##
  ## Number of replicas for web server.
  webReplicas: 1
  ##
  ## Custom airflow configuration environment variables
  ## Use this to override any airflow setting settings defining environment variables in the
  ## following form: AIRFLOW__<section>__<key>.
  ## See the Airflow documentation: https://airflow.readthedocs.io/en/stable/howto/set-config.html?highlight=setting-configuration
  ## Example:
  ##   config:
  ##     AIRFLOW__CORE__EXPOSE_CONFIG: "True"
  ##     HTTP_PROXY: "http://proxy.mycompany.com:123"
  config: {}
  ##
  ## Configure pod disruption budget for the scheduler
  podDisruptionBudget:
    maxUnavailable: 1
  ## Add custom connections
  ## Use this to add Airflow connections for operators you use
  ## For each connection - the id and type have to be defined.
  ## All the other parameters are optional
  ## Connections will be created with a script that is stored
  ## in a K8s secret and mounted into the scheduler container
  ## Example:
  ##   connections:
  ##   - id: my_aws
  ##     type: aws
  ##     extra: '{"aws_access_key_id": "**********", "aws_secret_access_key": "***", "region_name":"eu-central-1"}'
  connections: []

  ## Add airflow variables
  ## This should be a json string with your variables in it
  ## Examples:
  ##   variables: '{ "environment": "dev" }'
  variables: {}

  ## Add airflow ppols
  ## This should be a json string with your pools in it
  ## Examples:
  ##   pools: '{ "example": { "description": "This is an example of a pool", "slots": 2 } }'
  pools: {}

  ##
  ## Annotations for the Scheduler, Worker and Web pods
  podAnnotations: {}
    ## Example:
    ## iam.amazonaws.com/role: airflow-Role

  extraInitContainers: []
  ## Additional init containers to run before the Scheduler pods.
  ## for example, be used to run a sidecar that chown Logs storage .
  # - name: volume-mount-hack
  #   image: busybox
  #   command: ["sh", "-c", "chown -R 1000:1000 logs"]
  #   volumeMounts:
  #     - mountPath: /usr/local/airflow/logs
  #       name: logs-data

  extraContainers: []
  ## Additional containers to run alongside the Scheduler, Worker and Web pods
  ## This could, for example, be used to run a sidecar that syncs DAGs from object storage.
  # - name: s3-sync
  #   image: my-user/s3sync:latest
  #   volumeMounts:
  #   - name: synchronised-dags
  #     mountPath: /dags
  extraVolumeMounts: home/*user*/github/airflowDAGs
  ## Additional volumeMounts to the main containers in the Scheduler, Worker and Web pods.
  # - name: synchronised-dags
  #   mountPath: /usr/local/airflow/dags
  extraVolumes: home/*user*/github/airflowDAGs
  ## Additional volumes for the Scheduler, Worker and Web pods.
  # - name: synchronised-dags
  #   emptyDir: {}

  ##
  ## Run initdb when the scheduler starts.
  initdb: true


scheduler:
  resources: {}
    # limits:
    #   cpu: "1000m"
    #   memory: "1Gi"
    # requests:
    #   cpu: "500m"
    #   memory: "512Mi"

  ## Support Node, affinity and tolerations for scheduler pod assignment
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature
  nodeSelector: {}
  affinity: {}
  tolerations: []

flower:
  resources: {}
    # limits:
    #   cpu: "100m"
    #   memory: "128Mi"
    # requests:
    #   cpu: "100m"
    #   memory: "128Mi"
  service:
    annotations: {}
    type: ClusterIP
    externalPort: 5555

  ## Support Node, affinity and tolerations for flower pod assignment
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature
  nodeSelector: {}
  affinity: {}
  tolerations: []

web:
  resources: {}
    # limits:
    #   cpu: "300m"
    #   memory: "1Gi"
    # requests:
    #   cpu: "100m"
    #   memory: "512Mi"
  initialStartupDelay: "60"
  initialDelaySeconds: "360"

  ## Support Node, affinity and tolerations for web pod assignment
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature
  nodeSelector: {}
  affinity: {}
  tolerations: []
  ##
  ## Directory in which to mount secrets on webserver nodes.
  secretsDir: /var/airflow/secrets
  ##
  ## Secrets which will be mounted as a file at `secretsDir/<secret name>`.
  secrets: []

##
## Workers configuration
workers:
  enabled: true
  ##
  ## Number of workers pod to launch
  replicas: 1
  ##
  ## Custom resource configuration
  resources: {}
    # limits:
    #   cpu: "1"
    #   memory: "2G"
    # requests:
    #   cpu: "0.5"
    #   memory: "512Mi"
  ##
  ## Annotations for the Worker pods
  podAnnotations: {}
    ## Example:
    ## iam.amazonaws.com/role: airflow-Role
  ##
  ## Celery worker configuration
  celery:
    ##
    ## number of parallel celery tasks per worker
    instances: 1
  ##
  ## Directory in which to mount secrets on worker nodes.
  secretsDir: /var/airflow/secrets
  ##
  ## Secrets which will be mounted as a file at `secretsDir/<secret name>`.
  secrets: []

  ## Support Node, affinity and tolerations for worker pod assignment
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature
  nodeSelector: {}
  affinity: {}
  tolerations: []

##
## Ingress configuration
ingress:
  ##
  ## enable ingress
  ## Note: If you want to change url prefix for web ui or flower even if you do not use ingress,
  ## you can still change ingress.web.path and ingress.flower.path
  enabled: false
  ##
  ## Configure the webserver endpoint
  web:
    ## NOTE: This requires an airflow version > 1.9.x
    ## For the moment (March 2018) this is **not** available on official package, you will have
    ## to use an image where airflow has been updated to its current HEAD.
    ## You can use the following one:
    ##  stibbons31/docker-airflow-dev:2.0dev
    ##
    ## if path is '/airflow':
    ##  - UI will be accessible at 'http://mycompany.com/airflow/admin'
    ##  - Healthcheck is at 'http://mycompany.com/airflow/health'
    ##  - api is at 'http://mycompany.com/airflow/api'
    ## NOTE: do NOT keep trailing slash. For root configuration, set and empty string
    path: ""
    ##
    ## hostname for the webserver
    host: ""
    ##
    ## Annotations for the webserver
    ## Airflow webserver handles relative path completely, just let your load balancer give the HTTP
    ## header like the requested URL (no special configuration neeed)
    annotations: {}
      ##
      ## Example for Traefik:
      # traefik.frontend.rule.type: PathPrefix
      # kubernetes.io/ingress.class: traefik
    ##
    ## Configure the web liveness path.
    ## Defaults to the templated value `{{ ingress.web.path }}/health`
    livenessPath:
    tls:
      ## Set to "true" to enable TLS termination at the ingress
      enabled: false
      ## If enabled, set "secretName" to the secret containing the TLS private key and certificate
      ## Example:
      ## secretName: example-com-crt
  ##
  ## Configure the flower endpoind
  flower:
    ##
    ## If flower is '/airflow/flower':
    ##  - Flower UI is at 'http://mycompany.com/airflow/flower'
    ## NOTE: you need to have a reverse proxy/load balancer able to do URL rewrite in order to have
    ## flower mounted on other path than root. Flower only does half the job in url prefixing: it
    ## only generates the right URL/relative paths in the **returned HTML files**, but expects the
    ## request to have been be at the root.
    ## That's why we need a reverse proxy/load balancer that is able to strip the path
    ## NOTE: do NOT keep trailing slash. For root configuration, set and empty string
    path: ""
    ##
    ## Configure the liveness path. Keep to "/" for Flower >= jan 2018.
    ## For previous version, enter the same path than in the 'path' key
    ## NOTE: keep the trailing slash.
    livenessPath: /
    ##
    ## hostname for flower
    host: ""
    ##
    ## Annotation for the Flower endpoint
    ##
    ## ==== SKIP THE FOLLOWING BLOCK IF YOU HAVE FLOWER > JANUARY 2018 =============================
    ## Please note their is a small difference between the way Airflow Web server and Flower handles
    ## URL prefixes in HTTP requests:
    ## Flower wants HTTP header to behave like there was no URL prefix, and but still generates
    ## the right URL in html pages thanks to its `--url-prefix` parameter
    ##
    ##    Extracted from the Flower documentation:
    ##    (https://github.com/mher/flower/blob/master/docs/config.rst#url_prefix)
    ##
    ##        To access Flower on http://example.com/flower run it with:
    ##            flower --url-prefix=/flower
    ##
    ##        Use the following nginx configuration:
    ##            server {
    ##              listen 80;
    ##              server_name example.com;
    ##
    ##              location /flower/ {
    ##                rewrite ^/flower/(.*)$ /$1 break;
    ##                proxy_pass http://example.com:5555;
    ##                proxy_set_header Host $host;
    ##              }
    ##            }
    ## ==== IF YOU HAVE FLOWER > JANUARY 2018, NO MORE NEED TO STRIP THE PREFIX ====================
    annotations: {}
      ##
      ## NOTE: it is important here to have your reverse proxy strip the path/rewrite the URL
      ## Example for Traefik:
      # traefik.frontend.rule.type: PathPrefix       ## Flower >= Jan 2018
      # traefik.frontend.rule.type: PathPrefixStrip  ## Flower < Jan 2018
      # kubernetes.io/ingress.class: traefik
    tls:
      ## Set to "true" to enable TLS termination at the ingress
      enabled: false
      ## If enabled, set "secretName" to the secret containing the TLS private key and certificate
      ## Example:
      ## secretName: example-com-crt


##
## Storage configuration for DAGs
persistence:
  ##
  ## enable persistance storage
  enabled: false
  ##
  ## Existing claim to use
  # existingClaim: nil
  ## Existing claim's subPath to use, e.g. "dags" (optional)
  # subPath: ""
  ##
  ## Persistent Volume Storage Class
  ## If defined, storageClassName: <storageClass>
  ## If set to "-", storageClassName: "", which disables dynamic provisioning
  ## If undefined (the default) or set to null, no storageClassName spec is
  ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
  ##   GKE, AWS & OpenStack)
  # storageClass: default
  accessMode: ReadWriteOnce
  ##
  ## Persistant storage size request
  size: 1Gi

##
## Storage configuration for logs
logsPersistence:
  ##
  ## enable persistance storage
  enabled: false
  ##
  ## Existing claim to use
  # existingClaim: nil
  ## Existing claim's subPath to use, e.g. "logs" (optional)
  # subPath: ""
  ##
  ## Persistent Volume Storage Class
  ## If defined, storageClassName: <storageClass>
  ## If set to "-", storageClassName: "", which disables dynamic provisioning
  ## If undefined (the default) or set to null, no storageClassName spec is
  ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
  ##   GKE, AWS & OpenStack)
  ##
  ## A configuration for shared log storage requires a `storageClass` that
  ## supports the `ReadWriteMany` accessMode, such as NFS or AWS EFS.
  # storageClass: default
  accessMode: ReadWriteOnce
  ##
  ## Persistant storage size request
  size: 1Gi

##
## Configure DAGs deployment and update
dags:
  ##
  ## mount path for persistent volume.
  ## Note that this location is referred to in airflow.cfg, so if you change it, you must update airflow.cfg accordingly.
  path: /home/*user*/github/airflowDAGs/dags
  ##
  ## Set to True to prevent pickling DAGs from scheduler to workers
  doNotPickle: false
  ##
  ## Configure Git repository to fetch DAGs
  git:
    ##
    ## url to clone the git repository
    url:
    ##
    ## branch name, tag or sha1 to reset to
    ref: master
    ## pre-created secret with key, key.pub and known_hosts file for private repos
    secret: ""
  initContainer:
    ## Fetch the source code when the pods starts
    enabled: false
    ## Image for the init container (any image with git will do)
    image:
      ## docker-airflow image
      repository: alpine/git
      ## image tag
      tag: 1.0.7
      ## Image pull policy
      ## values: Always or IfNotPresent
      pullPolicy: IfNotPresent
    ## install requirements.txt dependencies automatically
    installRequirements: true

##
## Configure logs
logs:
  path: /home/*user*/github/airflowDAGs/logs

##
##  Enable RBAC
rbac:
  ##
  ## Specifies whether RBAC resources should be created
  create: true

##
## Create or use ServiceAccount
serviceAccount:
  ##
  ## Specifies whether a ServiceAccount should be created
  create: true
  ## The name of the ServiceAccount to use.
  ## If not set and create is true, a name is generated using the fullname template
  name:


##
## Configuration values for the postgresql dependency.
## ref: https://github.com/kubernetes/charts/blob/master/stable/postgresql/README.md
postgresql:
  ##
  ## Use the PostgreSQL chart dependency.
  ## Set to false if bringing your own PostgreSQL.
  enabled: true

  ##
  ## The name of an existing secret that contains the postgres password.
  existingSecret:

  ## Name of the key containing the secret.
  existingSecretKey: postgres-password

  ##
  ## If you are bringing your own PostgreSQL, you should set postgresHost and
  ## also probably service.port, postgresUser, postgresPassword, and postgresDatabase
  ## postgresHost:
  ##
  ## PostgreSQL port
  service:
    port: 5432
  ## PostgreSQL User to create.
  postgresUser: postgres
  ##
  ## PostgreSQL Password for the new user.
  ## If not set, a random 10 characters password will be used.
  postgresPassword: airflow
  ##
  ## PostgreSQL Database to create.
  postgresDatabase: airflow
  ##
  ## Persistent Volume Storage configuration.
  ## ref: https://kubernetes.io/docs/user-guide/persistent-volumes
  persistence:
    ##
    ## Enable PostgreSQL persistence using Persistent Volume Claims.
    enabled: true
    ##
    ## Persistant class
    # storageClass: classname
    ##
    ## Access mode:
    accessMode: ReadWriteOnce


## Configuration values for the Redis dependency.
## ref: https://github.com/kubernetes/charts/blob/master/stable/redis/README.md
redis:
  ##
  ## Use the redis chart dependency.
  ## Set to false if bringing your own redis.
  enabled: true

  ##
  ## The name of an existing secret that contains the redis password.
  existingSecret:

  ## Name of the key containing the secret.
  existingSecretKey: redis-password

  ##
  ## If you are bringing your own redis, you can set the host in redisHost.
  ## redisHost:
  ##
  ## Redis password
  ##
  password: airflow
  ##
  ## Master configuration
  master:
    ##
    ## Image configuration
    # image:
      ##
      ## docker registry secret names (list)
      # pullSecrets: nil
    ##
    ## Configure persistance
    persistence:
      ##
      ## Use a PVC to persist data.
      enabled: false
      ##
      ## Persistant class
      # storageClass: classname
      ##
      ## Access mode:
      accessMode: ReadWriteOnce
  ##
  ## Disable cluster management by default.
  cluster:
    enabled: false

# Enable this if you're using https://github.com/coreos/prometheus-operator
# Don't forget you need to install something like https://github.com/epoch8/airflow-exporter in your airflow docker container
serviceMonitor:
  enabled: false
  interval: "30s"
  path: /admin/metrics
  ## [Kube Prometheus Selector Label](https://github.com/helm/charts/tree/master/stable/prometheus-operator#exporters)
  selector:
    prometheus: kube-prometheus

# Enable this if you're using https://github.com/coreos/prometheus-operator
prometheusRule:
  enabled: false
  ## Namespace in which the prometheus rule is created
  # namespace: monitoring
  ## Define individual alerting rules as required
  ## ref: https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#rulegroup
  ##      https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/
  groups: {}

  ## Used to pass Labels that are used by the Prometheus installed in your cluster to select Prometheus Rules to work with
  ## ref: https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#prometheusspec
  additionalLabels: {}