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# Prometheus Node Exporter
* Installs prometheus [node exporter](https://github.com/prometheus/node_exporter)
## TL;DR;
```console
$ helm install stable/prometheus-node-exporter
```
## Introduction
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.
## Installing the Chart
To install the chart with the release name `my-release`:
```console
$ helm install --name my-release stable/prometheus-node-exporter
```
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.
## Uninstalling the Chart
To uninstall/delete the `my-release` deployment:
```console
$ helm delete my-release
```
The command removes all the Kubernetes components associated with the chart and deletes the release.
## Configuration
The following table lists the configurable parameters of the Node Exporter chart and their default values.
| Parameter | Description | Default | |
| --------------------------------- | ----------------------------------------------------------------------------------------------------------------------------- | --------------------------------------- | --- |
| `image.repository` | Image repository | `quay.io/prometheus/node-exporter` | |
| `image.tag` | Image tag | `v0.16.0` | |
| `image.pullPolicy` | Image pull policy | `IfNotPresent` | |
| `extraArgs` | Additional container arguments | `[]` | |
| `extraHostVolumeMounts` | Additional host volume mounts | {} | |
| `podLabels` | Additional labels to be added to pods | {} | |
| `rbac.create` | If true, create & use RBAC resources | `true` | |
| `rbac.pspEnabled` | Specifies whether a PodSecurityPolicy should be created. | `true` | |
| `resources` | CPU/Memory resource requests/limits | `{}` | |
| `service.type` | Service type | `ClusterIP` | |
| `service.port` | The service port | `9100` | |
| `service.targetPort` | The target port of the container | `9100` | |
| `service.nodePort` | The node port of the service | | |
| `service.annotations` | Kubernetes service annotations | `{prometheus.io/scrape: "true"}` | |
| `serviceAccount.create` | Specifies whether a service account should be created. | `true` | |
| `serviceAccount.name` | Service account to be used. If not set and `serviceAccount.create` is `true`, a name is generated using the fullname template | | |
| `serviceAccount.imagePullSecrets` | Specify image pull secrets | `[]` | |
| `securityContext` | SecurityContext | `{"runAsNonRoot": true, "runAsUser": 65534}` | |
| `affinity` | A group of affinity scheduling rules for pod assignment | `{}` | |
| `nodeSelector` | Node labels for pod assignment | `{}` | |
| `tolerations` | List of node taints to tolerate | `- effect: NoSchedule operator: Exists` | |
| `priorityClassName` | Name of Priority Class to assign pods | `nil` | |
| `endpoints` | list of addresses that have node exporter deployed outside of the cluster | `[]` | |
| `prometheus.monitor.enabled` | Set this to `true` to create ServiceMonitor for Prometheus operator | `false` | |
| `prometheus.monitor.additionalLabels` | Additional labels that can be used so ServiceMonitor will be discovered by Prometheus | `{}` | |
| `prometheus.monitor.namespace` | namespace where servicemonitor resource should be created | `the same namespace as prometheus node exporter` | |
Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
```console
$ helm install --name my-release \
--set serviceAccount.name=node-exporter \
stable/prometheus-node-exporter
```
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 my-release -f values.yaml stable/prometheus-node-exporter
```
|
