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This article is about how to use node_exporter. The editor thought it was very practical, so I shared it with you to learn. The following information is about node_exporter.

Run node exporter

Download the software package:

1. Download and install node_export

Mkdir-p / usr/local/prometheus/exporter/node cd / usr/local/prometheus/exporter/nodecurl-s-OL https://github.com/prometheus/node_exporter/releases/download/v0.18.0/node_exporter-$Version.linux-amd64.tar.gztar xf node_exporter-0.18.0.linux-amd64.tar.gzcp-a node_exporter-0.18.0.linux-amd64/node_exporter / usr/local/bin/

two。 Register for system services

Cat > / usr/lib/systemd/system/node-exporter.service 85 for: 1m labels: level: disaster annotations: summary: "instance {{$labels.instance}} memory utilization is too high" description: "{{$labels.instance}} memory utilization greater than 85% (current value: {{$value}})"-alert: hostLoad expr: sum (node_load15) > = sum (count (node_cpu) _ seconds_total {mode='system'}) by (cpu) and node_load1 > node_load5 and node_load5 > node_load15 for: 1m labels: level: disaster annotations: summary: "the instance {{$labels.instance}} 15 minutes is overloaded" description: "{{$labels.instance}} 15 minutes load is greater than its cpu cores (current value: {{$value}})"-alert: hostUp Expr: up {job= "node"} = 0 for: 1m labels: level: disaster annotations: summary: "instance {{$labels.instance}} unreachable" description: "{{$labels.instance}} instance unreachable Please solve the "install and configure alermanager" as soon as possible

1. Download and install alertmanager

Wget https://github.com/prometheus/alertmanager/releases/download/v0.21.0/alertmanager-0.21.0.linux-amd64.tar.gztar-xf alertmanager-0.21.0.linux-amd64.tar.gz mv alertmanager-0.21.0.linux-amd64 / usr/local/alertmanager

two。 Register for system services

Cat > / usr/lib/systemd/system/alertmanager.service

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