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Patch the warning for node exporter port

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Frank Mai
2019-04-25 14:32:48 -07:00
committed by Denise
parent 82f6ae987f
commit c8084fc0ef
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content/rancher/v2.x/en/cluster-admin/tools/monitoring/prometheus/_index.md
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@@ -28,6 +28,8 @@ The [node exporter](https://github.com/prometheus/node_exporter/blob/master/READ
When configuring Prometheus and enabling the node exporter, enter a host port in the **Node Exporter Host Port** that will not produce port conflicts with existing applications. The host port chosen must be open to allow internal traffic between Prometheus and the Node Exporter. When configuring Prometheus and enabling the node exporter, enter a host port in the **Node Exporter Host Port** that will not produce port conflicts with existing applications. The host port chosen must be open to allow internal traffic between Prometheus and the Node Exporter.
>**Warning:** In order for Prometheus to collect the metrics of the node exporter, after enabling cluster monitoring, you must open the **Node Exporter Host Port** in the host firewall rules to allow intranet access. By default, `9796` is used as that host port.
## Persistent Storage ## Persistent Storage
>**Prerequisite:** Configure one or more [storage class]({{< baseurl >}}/rancher/v2.x/en/cluster-admin/volumes-and-storage/#adding-storage-classes) to use as [persistent storage]({{< baseurl >}}/rancher/v2.x/en/cluster-admin/volumes-and-storage/) for your Prometheus or Grafana pod. >**Prerequisite:** Configure one or more [storage class]({{< baseurl >}}/rancher/v2.x/en/cluster-admin/volumes-and-storage/#adding-storage-classes) to use as [persistent storage]({{< baseurl >}}/rancher/v2.x/en/cluster-admin/volumes-and-storage/) for your Prometheus or Grafana pod.