Resolve "Setup installation Scripts in order to simplify deployment in new environments"

apiVersion: v1

kind: Pod

metadata:

  name: "{{ include "grafana.fullname" . }}-test-connection"

  labels:

    {{- include "grafana.labels" . | nindent 4 }}

  annotations:

    "helm.sh/hook": test

spec:

  containers:

    - name: wget

      image: busybox

      command: ['wget']

      args: ['{{ include "grafana.fullname" . }}:{{ .Values.service.port }}']

  restartPolicy: Never

1. Get the application URL by running these commands:

{{- if .Values.ingress.enabled }}

{{- range $host := .Values.ingress.hosts }}

  {{- range .paths }}

  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}

  {{- end }}

{{- end }}

{{- else if contains "NodePort" .Values.service.type }}

  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "grafana.fullname" . }})

  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")

  echo http://$NODE_IP:$NODE_PORT

{{- else if contains "LoadBalancer" .Values.service.type }}

     NOTE: It may take a few minutes for the LoadBalancer IP to be available.

           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "grafana.fullname" . }}'

  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "grafana.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")

  echo http://$SERVICE_IP:{{ .Values.service.port }}

{{- else if contains "ClusterIP" .Values.service.type }}

  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "grafana.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")

  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")

  echo "Visit http://127.0.0.1:8080 to use your application"

  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT

{{- end }}

{{/*

Expand the name of the chart.

*/}}

{{- define "grafana.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 "grafana.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 "grafana.chart" -}}

{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}

{{- end }}

{{/*

Common labels

*/}}

{{- define "grafana.labels" -}}

helm.sh/chart: {{ include "grafana.chart" . }}

{{ include "grafana.selectorLabels" . }}

{{- if .Chart.AppVersion }}

app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}

{{- end }}

app.kubernetes.io/managed-by: {{ .Release.Service }}

{{- end }}

{{/*

Selector labels

*/}}

{{- define "grafana.selectorLabels" -}}

app.kubernetes.io/name: {{ include "grafana.name" . }}

app.kubernetes.io/instance: {{ .Release.Name }}

{{- end }}

{{/*

Create the name of the service account to use

*/}}

{{- define "grafana.serviceAccountName" -}}

{{- if .Values.serviceAccount.create }}

{{- default (include "grafana.fullname" .) .Values.serviceAccount.name }}

{{- else }}

{{- default "default" .Values.serviceAccount.name }}

{{- end }}

{{- end }}

apiVersion: v1

kind: ConfigMap

metadata:

  name: datasources

data:

  datasources.yaml: |

    apiVersion: 1 

    datasources:

      - name: Prometheus

        type: prometheus

        typeName: Prometheus

        typeLogoUrl: public/app/plugins/datasource/prometheus/img/prometheus_logo.svg

        access: proxy

        url: {{ .Values.env.prometheusUrl }}

        uid: af6b44aa-0703-4979-825c-c1afba946534

        user: ''

        database: ''

        basicAuth: false

        isDefault: false

        jsonData:

          httpMethod: POST

          prometheusType: Prometheus

          prometheusVersion: 2.40.1

        readOnly: false 

---

apiVersion: v1

kind: ConfigMap

metadata:

  name: default

data:

  default.yaml: |

    apiVersion: 1

    providers:

      - name: Default # A uniquely identifiable name for the provider

        orgId: 1

        folder: "" # The folder where to place the dashboards

        folderUid: ""

        type: file

        disableDeletion: false

        allowUiUpdates: true

        options:

          path: /var/lib/grafana/dashboards

---

apiVersion: v1

kind: ConfigMap

metadata:

  name: kubernetes-dashboard

data:

  kubernetes-dashboard.json: |

{{ .Files.Get "kubernetes-dashboard.json" | indent 4 }}

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apiVersion: apps/v1

kind: Deployment

metadata:

  name: {{ include "grafana.fullname" . }}

  labels:

    {{- include "grafana.labels" . | nindent 4 }}

spec:

  {{- if not .Values.autoscaling.enabled }}

  replicas: {{ .Values.replicaCount }}

  strategy:

    type: Recreate

  {{- end }}

  selector:

    matchLabels:

      {{- include "grafana.selectorLabels" . | nindent 6 }}

  template:

    metadata:

      annotations:

        checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}

      labels:

        {{- include "grafana.selectorLabels" . | nindent 8 }}

    spec:

      {{- with .Values.imagePullSecrets }}

      imagePullSecrets:

        {{- toYaml . | nindent 8 }}

      {{- end }}

      serviceAccountName: {{ include "grafana.serviceAccountName" . }}

      securityContext:

        {{- toYaml .Values.podSecurityContext | nindent 8 }}

      containers:

        - env:

            - name: GF_AUTH_ANONYMOUS_ENABLED

              value: {{ quote .Values.env.gfAuthAnonymousEnable }}

            - name: GF_SECURITY_ALLOW_EMBEDDING

              value: {{ quote .Values.env.gfSecurityAllowEmbedding }}

            - name: GF_PATHS_PROVISIONING

              value: /etc/grafana/provisioning

          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"

          imagePullPolicy: {{ .Values.image.pullPolicy }}

          name: {{ .Chart.Name }}

          envFrom:

            - secretRef:

                name: grafana-secrets

          ports:

            - name: http

              containerPort: 3000

              protocol: TCP

#          livenessProbe:

#            tcpSocket:

#              port: {{ .Values.service.port }}

          resources:

            {{- toYaml .Values.resources | nindent 12 }}

          volumeMounts:

            - name: grafana-datasources

              mountPath: /etc/grafana/provisioning/datasources/datasources.yaml

              subPath: datasources.yaml

            - name: grafana-default

              mountPath: /etc/grafana/provisioning/dashboards/default.yaml

              subPath: default.yaml

            - name: kubernetes-dashboard

              mountPath: /var/lib/grafana/dashboards/kubernetes-dashboard.json

              subPath: kubernetes-dashboard.json

            {{- if .Values.persistence.enable | default false }}

            - name: grafana-claim0

              mountPath: /var/lib/grafana

            {{- end }}

      volumes:

      - name: grafana-datasources

        configMap:

          name: datasources

          items:

          - key: "datasources.yaml"

            path: "datasources.yaml"

      - name: grafana-default

        configMap:

          name: default

          items:

          - key: "default.yaml"

            path: "default.yaml"

      - name: kubernetes-dashboard

        configMap:

          name: kubernetes-dashboard

          items:

          - key: "kubernetes-dashboard.json"

            path: "kubernetes-dashboard.json"

      {{- if .Values.persistence.enable | default false }}

      - name: grafana-claim0

        persistentVolumeClaim:

          claimName: grafana-claim0

      {{- end }}

      {{- with .Values.nodeSelector }}

      nodeSelector:

        {{- toYaml . | nindent 8 }}

      {{- end }}

      {{- with .Values.affinity }}

      affinity:

        {{- toYaml . | nindent 8 }}

      {{- end }}

      {{- with .Values.tolerations }}

      tolerations:

        {{- toYaml . | nindent 8 }}

      {{- end }}

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