feat(zfs-exporter): added zfs-exporter helm chart

charts/zfs-exporter/.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
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/zfs-exporter/Chart.yaml

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+apiVersion: v2
+name: zfs-exporter
+description: A Helm chart of https://github.com/pdf/zfs_exporter for Kubernetes
+type: application
+version: "1.1.0"
+appVersion: "v2.3.4"

charts/zfs-exporter/templates/NOTES.txt

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+Zfs-exporter deployed.

charts/zfs-exporter/templates/_helpers.tpl

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

charts/zfs-exporter/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  labels:
+    {{- include "zfs-exporter.labels" . | nindent 4 }}
+  name: zfspv-bin
+data:
+  zfs: |
+    #!/bin/sh
+    if [ -x /host/sbin/zfs ]; then
+      chroot /host /sbin/zfs "$@"
+    elif [ -x /host/usr/sbin/zfs ]; then
+      chroot /host /usr/sbin/zfs "$@"
+    else
+      chroot /host "zfs" "$@"
+    fi
+  zpool: |
+    #!/bin/sh
+    if [ -x /host/sbin/zpool ]; then
+      chroot /host /sbin/zpool "$@"
+    elif [ -x /host/usr/sbin/zpool ]; then
+      chroot /host /usr/sbin/zpool "$@"
+    else
+      chroot /host "zpool" "$@"
+    fi

charts/zfs-exporter/templates/daemonset.yaml

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+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: {{ include "zfs-exporter.fullname" . }}
+  labels:
+    {{- include "zfs-exporter.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "zfs-exporter.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "zfs-exporter.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "zfs-exporter.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      {{- with .Values.priorityClassName }}
+      priorityClassName: {{ . | quote }}
+      {{- end }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 9134
+              hostPort: 9134
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          volumeMounts:
+            - name: device-dir
+              mountPath: /dev
+            - name: chroot-zfs
+              mountPath: /sbin/zfs
+              subPath: zfs
+            - name: chroot-zfs
+              mountPath: /sbin/zpool
+              subPath: zpool
+            - name: host-root
+              mountPath: /host
+              mountPropagation: "HostToContainer"
+              readOnly: true
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      volumes:
+      - hostPath:
+          path: /dev
+          type: Directory
+        name: device-dir
+      - configMap:
+          defaultMode: 365
+          name: zfspv-bin
+        name: chroot-zfs
+      - hostPath:
+          path: /
+          type: Directory
+        name: host-root

charts/zfs-exporter/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "zfs-exporter.fullname" . }}
+  labels:
+    {{- include "zfs-exporter.labels" . | nindent 4 }}
+spec:
+  type: ClusterIP
+  port: 9134
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "zfs-exporter.selectorLabels" . | nindent 4 }}

charts/zfs-exporter/templates/serviceaccount.yaml

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+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "zfs-exporter.serviceAccountName" . }}
+  labels:
+    {{- include "zfs-exporter.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}

charts/zfs-exporter/templates/servicemonitor.yaml

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+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  labels:
+    {{- include "zfs-exporter.labels" . | nindent 4 }}
+    {{- with .Values.serviceMonitor.additionalLabels }}
+      {{- toYaml . | nindent 4 }}
+    {{- end }}
+  name: {{ include "zfs-exporter.fullname" . }}
+spec:
+  endpoints:
+  - port: http
+    scheme: http
+  selector:
+    matchLabels:
+      {{- include "zfs-exporter.selectorLabels" . | nindent 6 }}

charts/zfs-exporter/values.yaml

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+image:
+  repository: enix/zfs-exporter
+  pullPolicy: IfNotPresent
+  tag: "v2.3.4"
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+serviceAccount:
+  # Specifies whether a service account should be created
+  create: true
+  # Annotations to add to the service account
+  annotations: {}
+  # The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name: ""
+
+podAnnotations: {}
+
+podSecurityContext: {}
+
+securityContext:
+  privileged: true
+  allowPrivilegeEscalation: true
+
+service:
+  type: ClusterIP
+  port: 9134
+
+resources:
+  limits:
+    cpu: 100m
+    memory: 64Mi
+  requests:
+    cpu: 30m
+    memory: 64Mi
+
+priorityClassName: ""
+
+nodeSelector: {}
+
+tolerations: {}
+
+affinity: {}
+
+serviceMonitor:
+  additionalLabels: {}