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add prometheus node exporter chart (#4260)
* add prometheus node exporter chart * Add owners file * Addedd home tag * Review README table, remove rbac from values
This commit is contained in:
Giancarlo Rubio
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k8s-ci-robot
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# Patterns to ignore when building packages.
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# This supports shell glob matching, relative path matching, and
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# negation (prefixed with !). Only one pattern per line.
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.DS_Store
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# Common VCS dirs
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.git/
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.gitignore
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.bzr/
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.bzrignore
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.hg/
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.hgignore
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.svn/
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# Common backup files
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*.swp
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*.bak
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*.tmp
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*~
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# Various IDEs
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.project
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.idea/
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*.tmproj
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apiVersion: v1
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appVersion: "0.15.2"
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description: A Helm chart for prometheus node-exporter
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name: prometheus-node-exporter
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version: 0.1.0
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home: https://github.com/prometheus/node_exporter/
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sources:
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- https://github.com/prometheus/node_exporter/
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keywords:
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- node-exporter
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- prometheus
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- exporter
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maintainers:
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- email: gianrubio@gmail.com
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name: gianrubio
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approvers:
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- gianrubio
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reviewers:
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- gianrubio
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# Prometheus Node Exporter
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* Installs prometheus [node exporter](https://github.com/prometheus/node_exporter)
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## TL;DR;
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```console
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$ helm install stable/prometheus-node-exporter
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```
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## Introduction
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This chart bootstraps a prometheus [node exporter](http://github.com/prometheus/node_exporter) deployment on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.
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## Installing the Chart
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To install the chart with the release name `my-release`:
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```console
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$ helm install --name my-release stable/prometheus-node-exporter
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```
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The command deploys node exporter on the Kubernetes cluster in the default configuration. The [configuration](#configuration) section lists the parameters that can be configured during installation.
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## Uninstalling the Chart
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To uninstall/delete the `my-release` deployment:
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```console
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$ helm delete my-release
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```
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The command removes all the Kubernetes components associated with the chart and deletes the release.
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## Configuration
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The following tables lists the configurable parameters of the Node Exporter chart and their default values.
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| Parameter | Description | Default |
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| ----------------------- | ----------------------------------------------------------------------------------------------------------------------------- | --------------------------------------- |
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| `image.repository` | Image repository | `quay.io/prometheus/node-exporter` |
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| `image.tag` | Image tag | `v0.15.2` |
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| `image.pullPolicy` | Image pull policy | `IfNotPresent` |
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| `resources` | CPU/Memory resource requests/limits | `{}` |
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| `service.type` | Service type | `ClusterIP` |
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| `service.port` | The service port | `9100` |
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| `service.targetPort` | The target port of the container | `9100` |
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| `serviceAccount.create` | Specifies whether a service account should be created. | `true` |
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| `serviceAccount.name` | Service account to be used. If not set and `serviceAccount.create` is `true`, a name is generated using the fullname template | |
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| `tolerations` | List of node taints to tolerate | `- effect: NoSchedule operator: Exists` |
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Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
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```console
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$ helm install --name my-release \
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--set serviceAccount.name=node-exporter \
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stable/prometheus-node-exporter
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```
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Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,
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```console
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$ helm install --name my-release -f values.yaml stable/prometheus-node-exporter
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```
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1. Get the application URL by running these commands:
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{{- if contains "NodePort" .Values.service.type }}
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export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ template "prometheus-node-exporter.fullname" . }})
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export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
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echo http://$NODE_IP:$NODE_PORT
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{{- else if contains "LoadBalancer" .Values.service.type }}
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NOTE: It may take a few minutes for the LoadBalancer IP to be available.
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You can watch the status of by running 'kubectl get svc -w {{ template "prometheus-node-exporter.fullname" . }}'
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export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ template "prometheus-node-exporter.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
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echo http://$SERVICE_IP:{{ .Values.service.port }}
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{{- else if contains "ClusterIP" .Values.service.type }}
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export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app={{ template "prometheus-node-exporter.name" . }},release={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
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echo "Visit http://127.0.0.1:8080 to use your application"
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kubectl port-forward $POD_NAME 8080:80
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{{- end }}
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{{/* vim: set filetype=mustache: */}}
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{{/*
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Expand the name of the chart.
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*/}}
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{{- define "prometheus-node-exporter.name" -}}
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{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
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{{- end -}}
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{{/*
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Create a default fully qualified app name.
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We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
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If release name contains chart name it will be used as a full name.
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*/}}
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{{- define "prometheus-node-exporter.fullname" -}}
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{{- if .Values.fullnameOverride -}}
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{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
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{{- else -}}
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{{- $name := default .Chart.Name .Values.nameOverride -}}
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{{- if contains $name .Release.Name -}}
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{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
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{{- else -}}
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{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{/*
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Create chart name and version as used by the chart label.
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*/}}
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{{- define "prometheus-node-exporter.chart" -}}
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{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
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{{- end -}}
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{{/*
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Create the name of the service account to use
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*/}}
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{{- define "prometheus-node-exporter.serviceAccountName" -}}
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{{- if .Values.serviceAccount.create -}}
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{{ default (include "prometheus-node-exporter.fullname" .) .Values.serviceAccount.name }}
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{{- else -}}
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{{ default "default" .Values.serviceAccount.name }}
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{{- end -}}
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{{- end -}}
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apiVersion: extensions/v1beta1
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kind: DaemonSet
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metadata:
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name: {{ template "prometheus-node-exporter.fullname" . }}
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labels:
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app: {{ template "prometheus-node-exporter.name" . }}
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chart: {{ template "prometheus-node-exporter.chart" . }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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selector:
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matchLabels:
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app: {{ template "prometheus-node-exporter.name" . }}
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release: {{ .Release.Name }}
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template:
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metadata:
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labels:
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app: {{ template "prometheus-node-exporter.name" . }}
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release: {{ .Release.Name }}
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spec:
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serviceAccountName: {{ template "prometheus-node-exporter.serviceAccountName" . }}
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securityContext:
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runAsNonRoot: true
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runAsUser: 65534
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containers:
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- name: node-exporter
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image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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args:
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- --path.procfs=/host/proc
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- --path.sysfs=/host/sys
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- --web.listen-address=0.0.0.0:{{ .Values.service.port }}
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ports:
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- name: metrics
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containerPort: {{ .Values.service.targetPort }}
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protocol: TCP
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livenessProbe:
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httpGet:
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path: /
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port: http
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readinessProbe:
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httpGet:
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path: /
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port: http
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resources:
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{{ toYaml .Values.resources | indent 12 }}
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volumeMounts:
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- name: proc
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mountPath: /host/proc
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readOnly: true
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- name: sys
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mountPath: /host/sys
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readOnly: true
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hostNetwork: true
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hostPID: true
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{{- with .Values.tolerations }}
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tolerations:
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{{ toYaml . | indent 8 }}
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{{- end }}
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volumes:
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- name: proc
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hostPath:
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path: /proc
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- name: sys
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hostPath:
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path: /sys
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apiVersion: v1
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kind: Service
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metadata:
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name: {{ template "prometheus-node-exporter.fullname" . }}
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labels:
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app: {{ template "prometheus-node-exporter.name" . }}
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chart: {{ template "prometheus-node-exporter.chart" . }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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type: {{ .Values.service.type }}
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ports:
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- port: {{ .Values.service.port }}
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targetPort: {{ .Values.service.targetPort }}
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protocol: TCP
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name: metrics
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selector:
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app: {{ template "prometheus-node-exporter.name" . }}
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release: {{ .Release.Name }}
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{{- if .Values.serviceAccount.create -}}
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: {{ template "prometheus-node-exporter.serviceAccountName" . }}
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labels:
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app: {{ template "prometheus-node-exporter.name" . }}
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chart: {{ template "prometheus-node-exporter.chart" . }}
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release: "{{ .Release.Name }}"
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heritage: "{{ .Release.Service }}"
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{{- end -}}
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# Default values for prometheus-node-exporter.
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# This is a YAML-formatted file.
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# Declare variables to be passed into your templates.
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image:
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repository: quay.io/prometheus/node-exporter
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tag: v0.15.2
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pullPolicy: IfNotPresent
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service:
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type: ClusterIP
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port: 9100
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targetPort: 9100
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resources: {}
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# We usually recommend not to specify default resources and to leave this as a conscious
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# choice for the user. This also increases chances charts run on environments with little
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# resources, such as Minikube. If you do want to specify resources, uncomment the following
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# lines, adjust them as necessary, and remove the curly braces after 'resources:'.
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# limits:
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# cpu: 200m
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# memory: 50Mi
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# requests:
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# cpu: 100m
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# memory: 30Mi
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serviceAccount:
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# Specifies whether a ServiceAccount should be created
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create: true
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# The name of the ServiceAccount to use.
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# If not set and create is true, a name is generated using the fullname template
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name:
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tolerations:
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- effect: NoSchedule
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operator: Exists
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