Helm chart for creating smb-flexvols

flexvolume/smb/helm/smb-flexvol/.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/

flexvolume/smb/helm/smb-flexvol/Chart.yaml

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+apiVersion: v1
+appVersion: "1.0"
+description: A Helm chart for adding a smb-flexvol to a Kubernetes cluster
+name: smb-flexvol
+version: 0.1.0

flexvolume/smb/helm/smb-flexvol/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "smb-flexvol.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 "smb-flexvol.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 "smb-flexvol.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Common labels
+*/}}
+{{- define "smb-flexvol.labels" -}}
+app.kubernetes.io/name: {{ include "smb-flexvol.name" . }}
+helm.sh/chart: {{ include "smb-flexvol.chart" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "smb-flexvol.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create -}}
+    {{ default (include "smb-flexvol.fullname" .) .Values.serviceAccount.name }}
+{{- else -}}
+    {{ default "default" .Values.serviceAccount.name }}
+{{- end -}}
+{{- end -}}

flexvolume/smb/helm/smb-flexvol/templates/pv-smb-flexvol.yaml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: {{ include "smb-flexvol.fullname" . }}
+  labels:
+{{ include "smb-flexvol.labels" . | indent 4 }}
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "smb-flexvol.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  capacity:
+    storage: {{ .Values.smb.storageCapacity }}
+  accessModes:
+    - ReadWriteMany
+  persistentVolumeReclaimPolicy: Retain
+  flexVolume:
+    driver: "microsoft.com/smb"
+    secretRef:
+      name: {{ .Values.smb.credsSecretName }}
+    options:
+      source: //{{ .Values.smb.server }}/{{ .Values.smb.share }}
+      mountoptions: {{ .Values.smb.mountOptions }}

flexvolume/smb/helm/smb-flexvol/templates/pvc-smb-flexvol.yaml

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+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: {{ include "smb-flexvol.fullname" . }}
+  labels:
+{{ include "smb-flexvol.labels" . | indent 4 }}
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "smb-flexvol.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  accessModes:
+  - ReadWriteMany
+  resources:
+    requests:
+      storage: {{ .Values.storageRequest }}
+  volumeName: {{ include "smb-flexvol.fullname" . }}
+  storageClassName: ""

flexvolume/smb/helm/smb-flexvol/templates/smb-flexvol-installer.yaml

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+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: {{ include "smb-flexvol.fullname" . }}-smb-flexvol-installer
+  labels:
+    k8s-app: smb
+    {{ include "smb-flexvol.labels" . | indent 4 }}
+  namespace: kube-system
+spec:
+  selector:
+    matchLabels:
+      name: smb
+      app.kubernetes.io/name: {{ include "smb-flexvol.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        name: smb
+        app.kubernetes.io/name: {{ include "smb-flexvol.name" . }}
+        app.kubernetes.io/instance: {{ .Release.Name }}
+    spec:
+      containers:
+      - name: smb-flexvol-installer
+        image: mcr.microsoft.com/k8s/flexvolume/smb-flexvolume
+        imagePullPolicy: Always
+        volumeMounts:
+        - name: volplugins
+          mountPath: /etc/kubernetes/volumeplugins/
+        - name: varlog
+          mountPath: /var/log/      
+      volumes:
+      - name: varlog
+        hostPath:
+          path: /var/log/              
+      - name: volplugins
+        hostPath:
+          path: {{ .Values.flexVolumePluginPath }}
+          type: DirectoryOrCreate
+      nodeSelector:
+        beta.kubernetes.io/os: linux

flexvolume/smb/helm/smb-flexvol/values.yaml

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+smb:
+  server: "STORAGE-ACCOUNT.file.core.windows.net"
+  share: "SHARE-NAME"
+  credsSecretName: # name of k8s secrets to ref
+  storageCapacity: 100Gi
+  # more mount options: https://linux.die.net/man/8/mount.cifs:
+  mountOptions: "vers=3.0,dir_mode=0777,file_mode=0777"  
+
+storageRequest: 10Gi
+
+# You MUST configure the path your k8s platform searches for flex volume plugins
+# See https://rook.io/docs/rook/master/flexvolume.html for helpful per-platform tips
+
+# "Default" location:
+# flexVolumePluginPath: /usr/libexec/kubernetes/kubelet-plugins/volume/exec/
+
+# Azure AKS:
+flexVolumePluginPath: /etc/kubernetes/volumeplugins
+
+# Google GKE:
+# flexVolumePluginPath: /etc/kubernetes/volumeplugins/
+
+labels: {}