Merge pull request #215 from guangbochen/nfs-2.3

proposed/nfs-provisioner/v0.3.0/.helmignore

+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj

proposed/nfs-provisioner/v0.3.0/Chart.yaml

+apiVersion: v1
+appVersion: 2.2.1-k8s1.12
+description: nfs-server-provisioner is an out-of-tree dynamic provisioner for Kubernetes. You can use it to quickly & easily deploy shared storage that works almost anywhere.
+name: nfs-provisioner
+icon: file://../nfs-logo.png
+version: 0.3.0
+maintainers:
+- name: kiall
+  email: kiall@macinnes.ie
+home: https://github.com/kubernetes/charts/tree/master/stable/nfs-server-provisioner
+sources:
+- https://github.com/kubernetes-incubator/external-storage/tree/master/nfs
+keywords:
+- nfs
+- storage

proposed/nfs-provisioner/v0.3.0/OWNERS

+approvers:
+- kiall
+reviewers:
+- kiall

proposed/nfs-provisioner/v0.3.0/README.md

+# NFS Server Provisioner
+
+[NFS Server Provisioner](https://github.com/kubernetes-incubator/external-storage/tree/master/nfs)
+is an out-of-tree dynamic provisioner for Kubernetes. You can use it to quickly
+& easily deploy shared storage that works almost anywhere.
+
+This chart will deploy the Kubernetes [external-storage projects](https://github.com/kubernetes-incubator/external-storage)
+`nfs` provisioner. This provisioner includes a built in NFS server, and is not intended for connecting to a pre-existing
+NFS server. If you have a pre-existing NFS Server, please consider using the [NFS Client Provisioner](https://github.com/kubernetes-incubator/external-storage/tree/master/nfs-client)
+instead.
+
+## Introduction
+
+This chart bootstraps a [nfs-server-provisioner](https://github.com/kubernetes-incubator/external-storage/tree/master/nfs)
+deployment on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh)
+package manager.
+
+## Configuration
+
+The following table lists the configurable parameters of the kibana chart and
+their default values.
+
+| Parameter                      | Description                                                                                                     | Default                                                  |
+|:-------------------------------|:----------------------------------------------------------------------------------------------------------------|:---------------------------------------------------------|
+| `imagePullSecrets`             | Specify image pull secrets                                                                                      | `nil` (does not add image pull secrets to deployed pods) |
+| `image.repository`             | The image repository to pull from                                                                               | `quay.io/kubernetes_incubator/nfs-provisioner`           |
+| `image.tag`                    | The image tag to pull from                                                                                      | `v1.0.8`                                                 |
+| `image.pullPolicy`             | Image pull policy                                                                                               | `IfNotPresent`                                           |
+| `service.type`                 | service type                                                                                                    | `ClusterIP`                                              |
+| `service.nfsPort`              | TCP port on which the nfs-server-provisioner NFS service is exposed                                                    | `2049`                                                   |
+| `service.mountdPort`           | TCP port on which the nfs-server-provisioner mountd service is exposed                                                 | `20048`                                                  |
+| `service.rpcbindPort`          | TCP port on which the nfs-server-provisioner RPC service is exposed                                                    | `51413`                                                  |
+| `service.nfsNodePort`          | if `service.type` is `NodePort` and this is non-empty, sets the nfs-server-provisioner node port of the NFS service    | `nil`                                                    |
+| `service.mountdNodePort`       | if `service.type` is `NodePort` and this is non-empty, sets the nfs-server-provisioner node port of the mountd service | `nil`                                                    |
+| `service.rpcbindNodePort`      | if `service.type` is `NodePort` and this is non-empty, sets the nfs-server-provisioner node port of the RPC service    | `nil`                                                    |
+| `persistence.enabled`          | Enable config persistence using PVC                                                                             | `false`                                                  |
+| `persistence.storageClass`     | PVC Storage Class for config volume                                                                             | `nil`                                                    |
+| `persistence.accessMode`       | PVC Access Mode for config volume                                                                               | `ReadWriteOnce`                                          |
+| `persistence.size`             | PVC Storage Request for config volume                                                                           | `1Gi`                                                    |
+| `storageClass.create`          | Enable creation of a StorageClass to consume this nfs-server-provisioner instance                                      | `true`                                                   |
+| `storageClass.provisionerName` | The provisioner name for the storageclass                                                                       | `cluster.local/{release-name}-{chart-name}`              |
+| `storageClass.defaultClass`    | Whether to set the created StorageClass as the clusters default StorageClass                                    | `false`                                                  |
+| `storageClass.name`            | The name to assign the created StorageClass                                                                     | `nfs`                                                    |
+| `storageClass.allowVolumeExpansion` | Allow base storage PCV to be dynamically resizeable (set to null to disable )                              | `true                                                    |
+| `storageClass.parameters`      | Parameters for StorageClass                                                                                     | `{}`                                                     |
+| `storageClass.mountOptions`    | Mount options for StorageClass                                                                                  | `[ "vers=4.1", "noatime" ]`                              |
+| `storageClass.reclaimPolicy`   | ReclaimPolicy field of the class, which can be either Delete or Retain                                          | `Delete`                                                    |
+| `resources`                    | Resource limits for nfs-server-provisioner pod                                                                          | `{}`                                                     |
+| `nodeSelector`                 | Map of node labels for pod assignment                                                                           | `{}`                                                     |
+| `tolerations`                  | List of node taints to tolerate                                                                                 | `[]`                                                     |
+| `affinity`                     | Map of node/pod affinities                                                                                      | `{}`                                                     |
+
+```console
+$ helm install stable/nfs-server-provisioner --name my-release \
+  --set=image.tag=v1.0.8,resources.limits.cpu=200m
+```
+
+Alternatively, a YAML file that specifies the values for the above parameters
+can be provided while installing the chart. For example,
+
+```console
+$ helm install stable/nfs-server-provisioner --name my-release -f values.yaml
+```
+
+> **Tip**: You can use the default [values.yaml](values.yaml) as an example
+
+## Persistence
+
+The nfs-server-provisioner image stores it's configuration data, and importantly, **the dynamic volumes it
+manages** `/export` path of the container.
+
+The chart mounts a [Persistent Volume](http://kubernetes.io/docs/user-guide/persistent-volumes/)
+volume at this location. The volume can be created using dynamic volume
+provisioning. However, **it is highly recommended** to explicitly specify
+a storageclass to use rather than accept the clusters default, or pre-create
+a volume for each replica.
+
+If this chart is deployed with more than 1 replica, `storageClass.defaultClass=true`
+and `persistence.storageClass`, then the 2nd+ replica will end up using the 1st
+replica to provision storage - which is likely never a desired outcome.
+
+## Recommended Persistence Configuration Examples
+
+The following is a recommended configuration example when another storage class
+exists to provide persistence:
+
+    persistence:
+      enabled: true
+      storageClass: "standard"
+      size: 200Gi
+
+    storageClass:
+      defaultClass: true
+
+On many clusters, the cloud provider integration will create a "standard" storage
+class which will create a volume (e.g. a Google Compute Engine Persistent Disk or
+Amazon EBS volume) to provide persistence.
+
+---
+
+The following is a recommended configuration example when another storage class
+does not exist to provide persistence:
+
+    persistence:
+      enabled: true
+      storageClass: "-"
+      size: 200Gi
+
+    storageClass:
+      defaultClass: true
+
+In this configuration, a `PersistentVolume` must be created for each replica
+to use. Installing the Helm chart, and then inspecting the `PersistentVolumeClaim`'s
+created will provide the necessary names for your `PersistentVolume`'s to bind to.
+
+An example of the necessary `PersistentVolume`:
+
+    apiVersion: v1
+    kind: PersistentVolume
+    metadata:
+      name: data-nfs-server-provisioner-0
+    spec:
+      capacity:
+        storage: 200Gi
+      accessModes:
+        - ReadWriteOnce
+      gcePersistentDisk:
+        fsType: "ext4"
+        pdName: "data-nfs-server-provisioner-0"
+      claimRef:
+        namespace: kube-system
+        name: data-nfs-server-provisioner-0
+
+---
+
+The following is a recommended configration example for running on bare metal with a hostPath volume:
+
+    persistence:
+      enabled: true
+      storageClass: "-"
+      size: 200Gi
+
+    storageClass:
+      defaultClass: true
+
+    nodeSelector:
+      kubernetes.io/hostname: {node-name}
+
+In this configuration, a `PersistentVolume` must be created for each replica
+to use. Installing the Helm chart, and then inspecting the `PersistentVolumeClaim`'s
+created will provide the necessary names for your `PersistentVolume`'s to bind to.
+
+An example of the necessary `PersistentVolume`:
+
+    apiVersion: v1
+    kind: PersistentVolume
+    metadata:
+      name: data-nfs-server-provisioner-0
+    spec:
+      capacity:
+        storage: 200Gi
+      accessModes:
+        - ReadWriteOnce
+      hostPath:
+        path: /srv/volumes/data-nfs-server-provisioner-0
+      claimRef:
+        namespace: kube-system
+        name: data-nfs-server-provisioner-0
+
+> **Warning**: `hostPath` volumes cannot be migrated between machines by Kubernetes, as such,
+in this example, we have restricted the `nfs-server-provisioner` pod to run on a single node. This
+is unsuitable for production deployments.

proposed/nfs-provisioner/v0.3.0/app-readme.md

+# NFS Server Provisioner
+
+[NFS Server Provisioner](https://github.com/kubernetes-incubator/external-storage/tree/master/nfs) is an out-of-tree dynamic provisioner for Kubernetes. You can use it to quickly & easily deploy shared storage that works almost anywhere.
+
+This chart will deploy the Kubernetes [external-storage projects](https://github.com/kubernetes-incubator/external-storage) `nfs-provisioner`. This provisioner includes a built in NFS server, and is not intended for connecting to a pre-existing NFS server. If you have a pre-existing NFS Server, please consider using the [NFS Client Provisioner](https://github.com/kubernetes-incubator/external-storage/tree/master/nfs-client) instead.
+
+## Tips:
+It's recommended to constrain the nfs-provisoner server to run on a particular Node using nodeSelector, you can add nodeSelector using `Edit as YAML`:
+```
+nodeSelector:
+  nfs-provisioner: server # specify your key:value nodeSelector
+```

proposed/nfs-provisioner/v0.3.0/questions.yml

+categories:
+- storage
+labels:
+  io.rancher.certified: experimental
+  io.rancher.role: cluster
+questions:
+- variable: defaultImage
+  default: true
+  description: "Use default Docker image"
+  label: Use Default Image
+  type: boolean
+  group: "Container Images"
+  show_subquestion_if: false
+  subquestions:
+  - variable: image.repository
+    default: "ranchercharts/kubernetes_incubator-nfs-provisioner"
+    description: "Docker image name"
+    type: string
+    label: NFS Image Name
+  - variable: image.tag
+    default: "v2.2.1-k8s1.12"
+    description: "NFS image tag"
+    type: string
+    label: Image Tag
+- variable: storageClass.create
+  default: true
+  description: "Creating the StorageClass"
+  type: boolean
+  required: true
+  label: Creating the StorageClass
+  group: "StorageClass Setting"
+  show_subquestion_if: true
+  subquestions:
+  - variable: storageClass.name
+    description: "The name to assign the created StorageClass, default to release name if not set."
+    type: string
+    label: StorageClass Name
+  - variable: storageClass.defaultClass
+    default: true
+    description: "Set StorageClass as the default StorageClass"
+    type: boolean
+    label: Set StorageClass as the default StorageClass
+  - variable: storageClass.reclaimPolicy
+    default: "Delete"
+    description: "ReclaimPolicy of the Created StorageClass"
+    required: true
+    type: enum
+    label: ReclaimPolicy of the Created StorageClass
+    options:
+      - "Delete"
+      - "Retain"
+  - variable: storageClass.allowVolumeExpansion
+    default: true
+    description: "AllowVolumeExpansion shows whether the storage class allow volume expand"
+    type: boolean
+    label: Allow VolumeExpansion
+# persistence volName
+- variable: persistence.enabled
+  default: false
+  description: "Enable persistent volume for the nfs-server-provisioner"
+  type: boolean
+  required: true
+  label: Enable Persistent Volume
+  show_subquestion_if: true
+  group: "Persistent Storage"
+  subquestions:
+  - variable: persistence.size
+    default: "20Gi"
+    description: "nfs-server-provisionner Persistent Volume Size"
+    type: string
+    label: nfs-server-provisionner Volume Size
+  - variable: persistence.storageClass
+    default: ""
+    description: "If undefined or null, uses the default StorageClass. Default to null"
+    type: storageclass
+    label: Default StorageClass for nfs-server-provisionner
+- variable: persistence.hostPath
+  default: "/srv"
+  description: "For GKE uses /home/kubernetes/nfs/ instead, custom nfs host path read and write permission are required, default to /srv"
+  type: string
+  label: NFS Host Path
+  required: true
+  show_if: "persistence.enabled=false"
+  group: "Persistent Storage"
+# nfs service type
+- variable: service.type
+  default: "ClusterIP"
+  description: "The service type of the nfs-provisioner"
+  type: enum
+  label: Service Type
+  group: "Service Settings"
+  required: true
+  options:
+  - "ClusterIP"
+  - "NodePort"
+  show_subquestion_if: "NodePort"
+  subquestions:
+  - variable: service.nfsNodePort
+    default: ""
+    description: "Sepcify the nodePort of the NFS service"
+    type: int
+    label: NodePort of the NFS service
+    min: 30000
+    max: 32767
+  - variable: service.mountdNodePort
+    default: ""
+    description: "Sepcify the nodePort of the mountd  service"
+    type: int
+    label: NodePort of the mountd service
+    min: 30000
+    max: 32767
+  - variable: service.rpcbindNodePort
+    default: ""
+    description: "Sepcify the nodePort of the RPC service"
+    type: int
+    label: NodePort of the RCP service
+    min: 30000
+    max: 32767

proposed/nfs-provisioner/v0.3.0/templates/NOTES.txt

+The NFS Provisioner service has now been installed.
+
+{{ if .Values.storageClass.create -}}
+A storage class named '{{ .Values.storageClass.name }}' has now been created
+and is available to provision dynamic volumes.
+
+You can use this storageclass by creating a `PersistentVolumeClaim` with the
+correct storageClassName attribute. For example:
+
+    ---
+    kind: PersistentVolumeClaim
+    apiVersion: v1
+    metadata:
+      name: test-dynamic-volume-claim
+    spec:
+      storageClassName: "{{ .Values.storageClass.name }}"
+      accessModes:
+        - ReadWriteOnce
+      resources:
+        requests:
+          storage: 100Mi
+
+{{ else -}}
+A storage class has NOT been created. You may create a custom `StorageClass`
+resource with a `provisioner` attribute of `{{ template "nfs-provisioner.provisionerName" . }}`.
+{{ end -}}

proposed/nfs-provisioner/v0.3.0/templates/_helpers.tpl

+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "nfs-provisioner.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "nfs-provisioner.fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "nfs-provisioner.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "nfs-provisioner.provisionerName" -}}
+{{- if .Values.storageClass.provisionerName -}}
+{{- printf .Values.storageClass.provisionerName -}}
+{{- else -}}
+cluster.local/{{ template "nfs-provisioner.fullname" . -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "nfs-provisioner.storageClass" -}}
+{{- if .Values.storageClass.name -}}
+{{- printf .Values.storageClass.name -}}
+{{- else -}}
+{{- template "nfs-provisioner.fullname" . -}}
+{{- end -}}
+{{- end -}}

proposed/nfs-provisioner/v0.3.0/templates/clusterrole.yaml

+{{ if .Values.rbac.create -}}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: {{ template "nfs-provisioner.fullname" . }}
+  labels:
+    app: {{ template "nfs-provisioner.name" . }}
+    chart: {{ template "nfs-provisioner.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+rules:
+  - apiGroups: [""]
+    resources: ["persistentvolumes"]
+    verbs: ["get", "list", "watch", "create", "delete"]
+  - apiGroups: [""]
+    resources: ["persistentvolumeclaims"]
+    verbs: ["get", "list", "watch", "update"]
+  - apiGroups: ["storage.k8s.io"]
+    resources: ["storageclasses"]
+    verbs: ["get", "list", "watch"]
+  - apiGroups: [""]
+    resources: ["events"]
+    verbs: ["list", "watch", "create", "update", "patch"]
+  - apiGroups: [""]
+    resources: ["services", "endpoints"]
+    verbs: ["get"]
+  - apiGroups: ["extensions"]
+    resources: ["podsecuritypolicies"]
+    resourceNames: ["nfs-provisioner"]
+    verbs: ["use"]
+  - apiGroups: [""]
+    resources: ["endpoints"]
+    verbs: ["get", "list", "watch", "create", "delete", "update", "patch"]
+{{- end -}}

proposed/nfs-provisioner/v0.3.0/templates/rolebinding.yaml

+{{- if .Values.rbac.create }}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    app: {{ template "nfs-provisioner.name" . }}
+    chart: {{ template "nfs-provisioner.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+  name: {{ template "nfs-provisioner.fullname" . }}
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: {{ template "nfs-provisioner.fullname" . }}
+subjects:
+  - kind: ServiceAccount
+    name: {{ template "nfs-provisioner.fullname" . }}
+    namespace: {{ .Release.Namespace }}
+{{- end -}}

proposed/nfs-provisioner/v0.3.0/templates/service.yaml

+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "nfs-provisioner.fullname" . }}
+  labels:
+    app: {{ template "nfs-provisioner.name" . }}
+    chart: {{ template "nfs-provisioner.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.nfsPort }}
+      targetPort: nfs
+      protocol: TCP
+      name: nfs
+{{- if (and (eq .Values.service.type "NodePort") (not (empty .Values.service.nfsNodePort))) }}
+      nodePort: {{ .Values.service.nfsNodePort }}
+{{- end }}
+    - port: {{ .Values.service.mountdPort }}
+      targetPort: mountd
+      protocol: TCP
+      name: mountd
+{{- if (and (eq .Values.service.type "NodePort") (not (empty .Values.service.mountdNodePort))) }}
+      nodePort: {{ .Values.service.mountdNodePort }}
+{{- end }}
+    - port: {{ .Values.service.rpcbindPort }}
+      targetPort: rpcbind-tcp
+      protocol: TCP
+      name: rpcbind-tcp
+{{- if (and (eq .Values.service.type "NodePort") (not (empty .Values.service.rpcbindNodePort))) }}
+      nodePort: {{ .Values.service.rpcbindNodePort }}
+{{- end }}
+    - port: {{ .Values.service.rpcbindPort }}
+      targetPort: rpcbind-udp
+      protocol: UDP
+      name: rpcbind-udp
+{{- if (and (eq .Values.service.type "NodePort") (not (empty .Values.service.rpcbindNodePort))) }}
+      nodePort: {{ .Values.service.rpcbindNodePort }}
+{{- end }}
+{{- if .Values.service.externalIPs }}
+  externalIPs:
+{{ toYaml .Values.service.externalIPs | indent 4 }}
+{{- end }}
+  selector:
+    app: {{ template "nfs-provisioner.name" . }}
+    release: {{ .Release.Name }}

proposed/nfs-provisioner/v0.3.0/templates/serviceaccount.yaml

+{{- if .Values.rbac.create }}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    app: {{ template "nfs-provisioner.name" . }}
+    chart: {{ template "nfs-provisioner.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+  name: {{ template "nfs-provisioner.fullname" . }}
+{{- end -}}

proposed/nfs-provisioner/v0.3.0/templates/statefulset.yaml

+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: {{ template "nfs-provisioner.fullname" . }}
+  labels:
+    app: {{ template "nfs-provisioner.name" . }}
+    chart: {{ template "nfs-provisioner.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+spec:
+  # TODO: Investigate how/if nfs-provisioner can be scaled out beyond 1 replica
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ template "nfs-provisioner.name" . }}
+      release: {{ .Release.Name }}
+  serviceName: {{ template "nfs-provisioner.fullname" . }}
+  template:
+    metadata:
+      labels:
+        app: {{ template "nfs-provisioner.name" . }}
+        chart: {{ template "nfs-provisioner.chart" . }}
+        heritage: {{ .Release.Service }}
+        release: {{ .Release.Name }}
+    spec:
+      # NOTE: This is 10 seconds longer than the default nfs-provisioner --grace-period value of 90sec
+      terminationGracePeriodSeconds: 100
+      serviceAccountName: {{ if .Values.rbac.create }}{{ template "nfs-provisioner.fullname" . }}{{ else }}{{ .Values.rbac.serviceAccountName | quote }}{{ end }}
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: nfs
+              containerPort: 2049
+              protocol: TCP
+            - name: mountd
+              containerPort: 20048
+              protocol: TCP
+            - name: rpcbind-tcp
+              containerPort: 111
+              protocol: TCP
+            - name: rpcbind-udp
+              containerPort: 111
+              protocol: UDP
+          securityContext:
+            capabilities:
+              add:
+                - DAC_READ_SEARCH
+                - SYS_RESOURCE
+          args:
+            - "-provisioner={{ template "nfs-provisioner.provisionerName" . }}"
+          env:
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+            - name: SERVICE_NAME
+              value: {{ template "nfs-provisioner.fullname" . }}
+            - name: POD_NAMESPACE
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.namespace
+          volumeMounts:
+            - name: data
+              mountPath: /export
+        {{- with .Values.resources }}
+          resources:
+{{ toYaml . | indent 12 }}
+        {{- end }}
+    {{- with .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+
+{{- if not .Values.persistence.enabled }}
+      volumes:
+        - name: data
+          hostPath:
+            path: {{ .Values.persistence.hostPath }}
+{{- end }}
+
+{{- if .Values.persistence.enabled }}
+  volumeClaimTemplates:
+    - metadata:
+        name: data
+      spec:
+        accessModes: [ {{ .Values.persistence.accessMode | quote }} ]
+      {{- if .Values.persistence.storageClass }}
+      {{- if (eq "-" .Values.persistence.storageClass) }}
+        storageClassName: ""
+      {{- else }}
+        storageClassName: {{ .Values.persistence.storageClass | quote }}
+      {{- end }}
+      {{- end }}
+        resources:
+          requests:
+            storage: {{ .Values.persistence.size | quote }}
+{{- end }}

proposed/nfs-provisioner/v0.3.0/templates/storageclass.yaml

+{{ if .Values.storageClass.create -}}
+kind: StorageClass
+apiVersion: storage.k8s.io/v1
+metadata:
+  name: {{ template "nfs-provisioner.storageClass" . }}
+  labels:
+    app: {{ template "nfs-provisioner.name" . }}
+    chart: {{ template "nfs-provisioner.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+{{- if .Values.storageClass.defaultClass }}
+  annotations:
+    storageclass.kubernetes.io/is-default-class: "true"
+{{- end }}
+provisioner: {{ template "nfs-provisioner.provisionerName" . }}
+reclaimPolicy: {{ .Values.storageClass.reclaimPolicy }}
+{{ if .Values.storageClass.allowVolumeExpansion }}
+allowVolumeExpansion: {{ .Values.storageClass.allowVolumeExpansion }}
+{{ end }}
+{{ end -}}
+{{- with .Values.storageClass.parameters }}
+parameters:
+{{ toYaml . | indent 2 }}
+{{- end }}
+{{- with .Values.storageClass.mountOptions }}
+mountOptions:
+{{ toYaml . | indent 2 }}
+{{- end }}

proposed/nfs-provisioner/v0.3.0/values.yaml

+# Default values for nfs-provisioner.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+replicaCount: 1
+
+# imagePullSecrets:
+
+image:
+  # repository: quay.io/kubernetes_incubator/nfs-provisioner
+  repository: ranchercharts/kubernetes_incubator-nfs-provisioner
+  tag: v2.2.1-k8s1.12
+  pullPolicy: IfNotPresent
+
+service:
+  type: ClusterIP
+
+  nfsPort: 2049
+  mountdPort: 20048
+  rpcbindPort: 51413
+  # nfsNodePort:
+  # mountdNodePort:
+  # rpcbindNodePort:
+
+  externalIPs: []
+
+persistence:
+  enabled: false
+
+  ## 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: "-"
+
+  accessMode: ReadWriteOnce
+  size: 1Gi
+  hostPath: /srv
+
+## For creating the StorageClass automatically:
+storageClass:
+  create: true
+
+  ## Set a provisioner name. If unset, a name will be generated.
+  # provisionerName:
+
+  ## Set StorageClass as the default StorageClass
+  ## Ignored if storageClass.create is false
+  defaultClass: false
+
+  ## Set a StorageClass name
+  ## Ignored if storageClass.create is false
+  # name: nfs
+
+  # set to null to prevent expansion
+  allowVolumeExpansion: true
+  ## StorageClass parameters
+  parameters: {}
+
+  mountOptions:
+    - vers=4.1
+    - noatime
+
+  ## ReclaimPolicy field of the class, which can be either Delete or Retain
+  reclaimPolicy: Delete
+
+## For RBAC support:
+rbac:
+  create: true
+
+  ## Ignored if rbac.create is true
+  ##
+  serviceAccountName: default
+
+resources: {}
+  # limits:
+  #  cpu: 100m
+  #  memory: 128Mi
+  # requests:
+  #  cpu: 100m
+  #  memory: 128Mi
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}