1.安装和配置prometheus

tar zxvf prometheus-2.3.0.linux-amd64.tar.gz -C /usr/local/ln -sv /usr/local/prometheus-2.3.0.linux-amd64/ /usr/local/prometheuscd /usr/local/prometheus[root@do1cloud03 prometheus]# cat prometheus.yml |egrep -v '#'global:alerting:  alertmanagers:  - static_configs:    - targets:rule_files:scrape_configs:  - job_name: linux    static_configs:      - targets: ['192.168.1.46:9100']        labels:          instance: db1  - job_name: node45    static_configs:      - targets: ['192.168.1.45:9100']        labels:          instance: node45

2.安装node-exporter

tar -zxvf node_exporter-0.16.0.linux-arm64.tar.gzmv node_exporter-0.16.0.linux-amd64 /usr/local/node_exporter./node_exporter

3.去官网下载node-exporter-1.6.0对应的dashboard

https://grafana.com/grafana/dashboards

 

 4.去dashboard设置

 5.排错思路：在这里获取到prom sql，去Prometheus的graph查询

　　对于已经存储的历史数据,Prometheus提供了PromQL语言进行查询,并自带了一个简易的UI界面,可以在界面上进行查询、绘图、查看配置、告警等等。

　　需要学习简单的PromQL语言，在grafana里面根据业务自定义dashboard