Add Helm chart for NFS driver

Signed-off-by: Mayank Shah <mayankshah1614@gmail.com>

charts/csi-driver-nfs/.helmignore

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+# 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
+.vscode/

charts/csi-driver-nfs/Chart.yaml

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+apiVersion: v1
+appVersion: "1.0"
+description: A Helm chart for Kubernetes
+name: csi-driver-nfs
+version: 0.1.0

charts/csi-driver-nfs/templates/NOTES.txt

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+ The CSI NFS Driver is getting deployed to your cluster.
+
+To check CSI NFS Driver pods status, please run:
+
+  kubectl --namespace={{ .Release.Namespace }} get pods --selector="release={{ .Release.Name }}" --watch

charts/csi-driver-nfs/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+
+{{/* labels for helm resources */}}
+{{- define "nfs.labels" -}}
+labels:
+  heritage: "{{ .Release.Service }}"
+  release: "{{ .Release.Name }}"
+  revision: "{{ .Release.Revision }}"
+  chart: "{{ .Chart.Name }}"
+  chartVersion: "{{ .Chart.Version }}"
+{{- end -}}

charts/csi-driver-nfs/templates/csi-nfs-controller.yaml

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+---
+kind: Deployment
+apiVersion: apps/v1
+metadata:
+  name: csi-nfs-controller
+  namespace: {{ .Release.Namespace }}
+{{ include "nfs.labels" . | indent 2 }}
+spec:
+  replicas: {{ .Values.controller.replicas }}
+  selector:
+    matchLabels:
+      app: csi-nfs-controller
+  template:
+    metadata:
+{{ include "nfs.labels" . | indent 6 }}
+        app: csi-nfs-controller
+    spec:
+      serviceAccountName: csi-nfs-controller-sa
+      nodeSelector:
+        kubernetes.io/os: linux
+      priorityClassName: system-cluster-critical
+      tolerations:
+        - key: "node-role.kubernetes.io/master"
+          operator: "Equal"
+          value: "true"
+          effect: "NoSchedule"
+      containers:
+        - name: csi-provisioner
+          image: "{{ .Values.image.csiProvisioner.repository }}:{{ .Values.image.csiProvisioner.tag }}"
+          args:
+            - "-v=5"
+            - "--csi-address=$(ADDRESS)"
+            - "--enable-leader-election"
+            - "--leader-election-type=leases"
+          env:
+            - name: ADDRESS
+              value: /csi/csi.sock
+          imagePullPolicy: {{ .Values.image.csiProvisioner.pullPolicy }}
+          volumeMounts:
+            - mountPath: /csi
+              name: socket-dir
+          resources:
+            limits:
+              cpu: 100m
+              memory: 100Mi
+            requests:
+              cpu: 10m
+              memory: 20Mi
+        - name: liveness-probe
+          image: "{{ .Values.image.livenessProbe.repository }}:{{ .Values.image.livenessProbe.tag }}"
+          args:
+            - --csi-address=/csi/csi.sock
+            - --connection-timeout=3s
+            - --health-port=29642
+            - --v=5
+          imagePullPolicy: {{ .Values.image.livenessProbe.pullPolicy }}
+          volumeMounts:
+            - name: socket-dir
+              mountPath: /csi
+          resources:
+            limits:
+              cpu: 100m
+              memory: 100Mi
+            requests:
+              cpu: 10m
+              memory: 20Mi
+        - name: nfs
+          image: "{{ .Values.image.nfs.repository }}:{{ .Values.image.nfs.tag }}"
+          securityContext:
+            privileged: true
+            capabilities:
+              add: ["SYS_ADMIN"]
+            allowPrivilegeEscalation: true
+          imagePullPolicy: {{ .Values.image.nfs.pullPolicy }}
+          args:
+            - "-v=5"
+            - "--nodeid=$(NODE_ID)"
+            - "--endpoint=$(CSI_ENDPOINT)"
+          env:
+            - name: NODE_ID
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
+            - name: CSI_ENDPOINT
+              value: unix:///csi/csi.sock
+          volumeMounts:
+            - name: plugin-dir
+              mountPath: /plugin
+            - name: pods-mount-dir
+              mountPath: /var/lib/kubelet/pods
+              mountPropagation: "Bidirectional"
+            - mountPath: /csi
+              name: socket-dir
+          resources:
+            limits:
+              cpu: 200m
+              memory: 200Mi
+            requests:
+              cpu: 10m
+              memory: 20Mi
+      volumes:
+        - name: plugin-dir
+          hostPath:
+            path: /var/lib/kubelet/plugins/csi-nfsplugin
+            type: DirectoryOrCreate
+        - name: pods-mount-dir
+          hostPath:
+            path: /var/lib/kubelet/pods
+            type: Directory
+        - name: socket-dir
+          emptyDir: {}

charts/csi-driver-nfs/templates/csi-nfs-driverinfo.yaml

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+apiVersion: storage.k8s.io/v1beta1
+kind: CSIDriver
+metadata:
+  name: nfs.csi.k8s.io
+spec:
+  attachRequired: false
+  volumeLifecycleModes:
+  - Persistent
+  podInfoOnMount: true

charts/csi-driver-nfs/templates/csi-nfs-node.yaml

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+# This YAML file contains driver-registrar & csi driver nodeplugin API objects
+# that are necessary to run CSI nodeplugin for nfs
+kind: DaemonSet
+apiVersion: apps/v1
+metadata:
+  name: csi-nfs-node
+  namespace: {{ .Release.Namespace }}
+{{ include "nfs.labels" . | indent 2 }}
+spec:
+  selector:
+    matchLabels:
+      app: csi-nfs-node
+  template:
+    metadata:
+{{ include "nfs.labels" . | indent 6 }}
+        app: csi-nfs-node
+    spec:
+      hostNetwork: true # original nfs connection would be broken without hostNetwork setting
+      dnsPolicy: ClusterFirstWithHostNet
+      containers:
+        - name: node-driver-registrar
+          image: "{{ .Values.image.nodeDriverRegistrar.repository }}:{{ .Values.image.nodeDriverRegistrar.tag }}"
+          lifecycle:
+            preStop:
+              exec:
+                command: ["/bin/sh", "-c", "rm -rf /registration/csi-nfsplugin /registration/csi-nfsplugin-reg.sock"]
+          args:
+            - --v=5
+            - --csi-address=/plugin/csi.sock
+            - --kubelet-registration-path=/var/lib/kubelet/plugins/csi-nfsplugin/csi.sock
+          env:
+            - name: KUBE_NODE_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
+          imagePullPolicy: {{ .Values.image.nodeDriverRegistrar.pullPolicy }}
+          volumeMounts:
+            - name: plugin-dir
+              mountPath: /plugin
+            - name: registration-dir
+              mountPath: /registration
+        - name: nfs
+          securityContext:
+            privileged: true
+            capabilities:
+              add: ["SYS_ADMIN"]
+            allowPrivilegeEscalation: true
+          image: "{{ .Values.image.nfs.repository }}:{{ .Values.image.nfs.tag }}"
+          args :
+            - "-v=5"
+            - "--nodeid=$(NODE_ID)"
+            - "--endpoint=$(CSI_ENDPOINT)"
+          env:
+            - name: NODE_ID
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
+            - name: CSI_ENDPOINT
+              value: unix://plugin/csi.sock
+          imagePullPolicy: "IfNotPresent"
+          volumeMounts:
+            - name: plugin-dir
+              mountPath: /plugin
+            - name: pods-mount-dir
+              mountPath: /var/lib/kubelet/pods
+              mountPropagation: "Bidirectional"
+      volumes:
+        - name: plugin-dir
+          hostPath:
+            path: /var/lib/kubelet/plugins/csi-nfsplugin
+            type: DirectoryOrCreate
+        - name: pods-mount-dir
+          hostPath:
+            path: /var/lib/kubelet/pods
+            type: Directory
+        - hostPath:
+            path: /var/lib/kubelet/plugins_registry
+            type: Directory
+          name: registration-dir

charts/csi-driver-nfs/templates/rbac-csi-nfs-controller.yaml

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+{{- if .Values.serviceAccount.create -}}
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: csi-nfs-controller-sa
+  namespace: {{ .Release.Namespace }}
+{{ include "nfs.labels" . | indent 2 }}
+---
+{{- end -}}
+
+{{- if .Values.rbac.create -}}
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: nfs-external-provisioner-role
+{{ include "nfs.labels" . | indent 2 }}
+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: ["get", "list", "watch", "create", "update", "patch"]
+  - apiGroups: ["storage.k8s.io"]
+    resources: ["csinodes"]
+    verbs: ["get", "list", "watch"]
+  - apiGroups: [""]
+    resources: ["nodes"]
+    verbs: ["get", "list", "watch"]
+  - apiGroups: ["coordination.k8s.io"]
+    resources: ["leases"]
+    verbs: ["get", "list", "watch", "create", "update", "patch"]
+---
+kind: ClusterRoleBinding
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: nfs-csi-provisioner-binding
+{{ include "nfs.labels" . | indent 2 }}
+subjects:
+  - kind: ServiceAccount
+    name: csi-nfs-controller-sa
+    namespace: {{ .Release.Namespace }}
+roleRef:
+  kind: ClusterRole
+  name: nfs-external-provisioner-role
+  apiGroup: rbac.authorization.k8s.io
+{{- end -}}

charts/csi-driver-nfs/values.yaml

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+image:
+    nfs:
+        repository: quay.io/k8scsi/nfsplugin
+        tag: v2.0.0
+        pullPolicy: ifNotPresent
+    csiProvisioner:
+        repository: mcr.microsoft.com/oss/kubernetes-csi/csi-provisioner
+        tag: v1.4.0
+        pullPolicy: ifNotPresent
+    livenessProbe:
+        repository: mcr.microsoft.com/oss/kubernetes-csi/livenessprobe
+        tag: v1.1.0
+        pullPolicy: ifNotPresent
+    nodeDriverRegistrar:
+        repository: mcr.microsoft.com/oss/kubernetes-csi/csi-node-driver-registrar
+        tag: v1.2.0
+        pullPolicy: IfNotPresent
+
+serviceAccount:
+  create: true
+
+rbac:
+  create: true
+
+controller:
+  replicas: 2