[speedtest-prometheus] - adding speedtest-prometheus chart (#214)

* adding speedtest-prometheus chart

Signed-off-by: Jeff Billimek <jeff@billimek.com>

* fixup readme

* use charts apiVersion v1

* chart now needs to be v2

* use charts apiVersion v1

* chart now needs to be v2

charts/speedtest-prometheus/.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
+# OWNERS file for Kubernetes
+OWNERS

charts/speedtest-prometheus/Chart.yaml

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+apiVersion: v2
+name: speedtest-prometheus
+description: Prometheus Exporter for the official Speedtest CLI
+type: application
+version: 1.0.0
+appVersion: 1.1.0
+keywords:
+- speedtest
+- influxdb
+- grafana
+home: https://github.com/billimek/billimek-charts/tree/master/charts/speedtest-prometheus
+icon: https://img.favpng.com/12/7/24/speedtest-net-logo-internet-access-png-favpng-yVPchiKuhWWAXA41Vpak0NUvx.jpg
+sources:
+- https://github.com/billimek/prometheus-speedtest-exporter
+maintainers:
+- name: billimek
+  email: jeff@billimek.com

charts/speedtest-prometheus/OWNERS

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+approvers:
+- billimek
+reviewers:
+- billimek

charts/speedtest-prometheus/README.md

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+# Prometheus Exporter using the Speedtest CLI
+
+This is a helm chart provising a prometheus exporter (with optional ServiceMontor) to conduct speedtests using the official speedtest CLI.  Based on the [prometheus-speedtest-exporter](https://github.com/billimek/prometheus-speedtest-exporter) multi-arch container image.
+
+## TL;DR;
+
+```console
+helm repo add billimek https://billimek.com/billimek-charts/
+helm install billimek/speedtest-prometheus
+```
+
+## Installing the Chart
+
+To install the chart with the release name `speedtest-prometheus`:
+
+```console
+helm install --name speedtest-prometheus billimek/speedtest-prometheus
+```
+
+## Uninstalling the Chart
+
+To uninstall/delete the `speedtest-prometheus` deployment:
+
+```console
+helm delete speedtest-prometheus
+```
+
+The command removes all the Kubernetes components associated with the chart and deletes the release.
+
+## Configuration
+
+Read through the [values.yaml](https://github.com/billimek/billimek-charts/blob/master/charts/speedtest-prometheus/values.yaml) file. It has several commented out suggested values.
+
+Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
+
+```console
+helm install --name speedtest-prometheus \
+   --set serviceMonitor.enabled=true \
+    billimek/speedtest-prometheus
+```
+
+Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,
+
+```console
+helm install --name speedtest-prometheus -f values.yaml billimek/speedtest-prometheus
+```

charts/speedtest-prometheus/templates/NOTES.txt

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+1. Get the application URL by running these commands:
+{{- if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "speedtest-prometheus.fullname" . }})
+  export NODE_IP=$(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 "speedtest-prometheus.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "speedtest-prometheus.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$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 "speedtest-prometheus.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:80
+{{- end }}

charts/speedtest-prometheus/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "speedtest-prometheus.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 "speedtest-prometheus.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 "speedtest-prometheus.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Common labels
+*/}}
+{{- define "speedtest-prometheus.labels" -}}
+helm.sh/chart: {{ include "speedtest-prometheus.chart" . }}
+{{ include "speedtest-prometheus.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}
+
+{{/*
+Selector labels
+*/}}
+{{- define "speedtest-prometheus.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "speedtest-prometheus.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}

charts/speedtest-prometheus/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "speedtest-prometheus.fullname" . }}
+  labels:
+    {{- include "speedtest-prometheus.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "speedtest-prometheus.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "speedtest-prometheus.selectorLabels" . | nindent 8 }}
+    spec:
+    {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 9469
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /metrics
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /metrics
+              port: http
+          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 }}

charts/speedtest-prometheus/templates/service.yaml

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

charts/speedtest-prometheus/templates/servicemonitor.yaml

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+{{- if .Values.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ include "speedtest-prometheus.fullname" . }}
+  labels:
+    {{- include "speedtest-prometheus.labels" . | nindent 4 }}
+  {{- with .Values.serviceMonitor.additionalLabels }}
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "speedtest-prometheus.selectorLabels" . | nindent 6 }}
+  endpoints:
+  - port: http
+    interval: {{ .Values.serviceMonitor.interval }}
+    path: /probe
+    params:
+      script:
+        - speedtest
+    scrapeTimeout: {{ .Values.serviceMonitor.scrapeTimeout }}
+{{- end }}

charts/speedtest-prometheus/values.yaml

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+# Default values for speedtest-prometheus.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+replicaCount: 1
+
+image:
+  repository: billimek/prometheus-speedtest-exporter
+  tag: 1.1.0
+  pullPolicy: IfNotPresent
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+podSecurityContext: {}
+  # fsGroup: 2000
+
+securityContext: {}
+  # capabilities:
+  #   drop:
+  #   - ALL
+  # readOnlyRootFilesystem: true
+  # runAsNonRoot: true
+  # runAsUser: 1000
+
+service:
+  type: ClusterIP
+  port: 9469
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}
+
+serviceMonitor:
+  enabled: false
+  interval: "60m"
+  scrapeTimeout: 90s
+  # namespace: default
+  additionalLabels: {}