一、Prometheus和Grafana搭建

一、服务端Prometheus二进制安装

https://prometheus.io/

下载过慢可使用迅雷下载

tar -zxvf prometheus-2.53.0.linux-amd64.tar.gz

启动

./prometheus --config.file=prometheus.yml

将其配置为系统服务：

vim /usr/lib/systemd/system/prometheus.service

[Unit]
Description=https://prometheus.io

[Service]
Restart=on-failure
ExecStart=/prometheus/prometheus-2.53.0/prometheus --config.file=/prometheus/prometheus-2.53.0/prometheus.yml --storage.tsdb.path=/prometheus/data --storage.tsdb.retention.time=60d --web.enable-lifecycle
[Install]
WantedBy=multi-user.target

web.enable-lifecycle是让prometheus热重启，开启以后请求reload

curl -XPOST http://ip:9090/-/reload或者浏览器直接请求

启动Prometheus:

systemctl start prometheus

查看Prometheus状态:

systemctl status prometheus

访问地址：http://127.0.0.1:9090

二、Grafana安装

https://grafana.com/grafana/download

tar -zxvf grafana-enterprise-11.1.0.linux-amd64.tar.gz

将其配置为系统服务：

vim /usr/lib/systemd/system/grafana.service

[Unit]
Description=https://docs.grafana.org

[Service]
Restart=on-failure
ExecStart=/prometheus/grafana/bin/grafana-server --config=/prometheus/grafana/conf/defaults.ini --homepath=/prometheus/grafana/
[Install]
WantedBy=multi-user.target

修改defaults.ini:

default_language = zh-Hans

启动grafana:

systemctl start grafana

查看grafana状态:

systemctl status grafana

访问地址：http://127.0.0.1:3000 默认账号密码都是admin

三、客户端node_exporter安装

https://prometheus.io/download/

tar -zxvf attachment\;\ filename\=node_exporter-1.8.1.linux-amd64.tar.gz

将其配置为系统服务：

vim /usr/lib/systemd/system/node_exporter.service

[Unit]
Description=node_exporter
Documentation=https://prometheus.io
[Service]
Restart=on-failure
ExecStart=/prometheus/node_exporter/node_exporter 
[Install]
WantedBy=multi-user.target

启动node_exporter:

systemctl start node_exporter

查看node_exporter状态:

systemctl status node_exporter

访问地址：http://127.0.0.1:9100/metrics

四、将node_exporter加到Prometheus中

修改prometheus.yml，在scrape_configs下添加

  - job_name: "node_exporter"
    static_configs:
      - targets: ["192.168.0.1:9100","192.168.0.2:9100"]
# targets处可添加多个节点

重新加载配置文件

curl -XPOST http://127.0.0.1:9090/-/reload

之后在Prometheus的status下的targets下可以看到node_exporter

五、Grafana添加仪表盘

1.添加prometheus

连接-》数据源-》添加新数据源-》选择prometheus-》在connection处添加prometheus地址-》save & test

2.添加仪表板

仪表板-》新建仪表板-》导入仪表板-》在https://grafana.com/grafana/dashboards选择仪表板并copy id to clipboard-》在导入仪表板的界面粘贴ID并加载

模板下载样例：https://grafana.com/grafana/dashboards/16098-node-exporter-dashboard-20240520-job/ ，内网环境使用JSON导入