Connecting Node Exporter

Node Exporter is provided by Prometheus to collect information about Linux hosts, including the CPU, memory, load, file system, and network. After metrics are reported to AOM using Node Exporter, you can check the metrics on the Metric Management page of the Prometheus instance for ECS.

Prerequisite

The UniAgent has been installed on the host. For details, see Installing a UniAgent.

Precaution

A host supports only one Node Exporter.

Installing Node Exporter

Log in to the AOM 2.0 console.
In the navigation pane, choose Access Center.
On the Prometheus Running Environments panel, click the ECS Node Exporter card.
On the Procedure tab page of the ECS Node Exporter dialog box, perform the installation as prompted.
1. Select a target Prometheus instance for ECS from the drop-down list.
2. Select one or more hosts to install Node Exporter.
Click Install to complete the installation.

Upon installation, Node Exporter can collect metrics. By default, both the collection period and timeout period are 60s.
Figure 1 Installing Node Exporter

Checking a Collection Task

After Node Exporter is installed, perform the operations listed in Table 1 on the Collection Tasks tab page of the ECS Node Exporter dialog box.

**Table 1** Related operations
Operation	Description
Searching for a collection task	You can search for collection tasks by collection task, collection status, host IP address, or host name.
Refreshing a collection task	Click in the upper right corner of the collection task list to obtain the latest information.
Deleting a collection task	Click Delete in the Operation column.
Starting or stopping a collection task	Click the button in the Start/Stop column of a collection task to start or stop it.