Prometheus客户端节点监控node_exporter

分手后的思念是犯贱 2022-09-12 04:47 282阅读 0赞

linux下的节点监控可以用官方的node\_exporter，默认端口是9100

windows的用[GitHub - prometheus-community/windows\_exporter: Prometheus exporter for Windows machines][GitHub - prometheus-community_windows_exporter_ Prometheus exporter for Windows machines]

windows的这个不是官方的，默认端口是9182

下面讲正题

1.下载安装node\_exporter

下载和解压

wget https://github.com/prometheus/node_exporter/releases/download/v1.2.2/node_exporter-1.2.2.linux-amd64.tar.gz
    tar -C /usr/local -zxvf  node_exporter-1.2.2.linux-amd64.tar.gz

建立软链接

ln -sv /usr/local/node_exporter-1.2.2.linux-amd64/ /usr/local/node_exporter

开机自启

vi /etc/systemd/system/node_exporter.service

添加下面内容

[Unit]
    Description=node_exporter
    After=network.target
    
    [Service]
    Type=simple
    Restart=on-failure
    ExecStart=/usr/local/node_exporter/node_exporter
    ExecReload=/bin/kill -HUP $MAINPID
    
    [Install]
    WantedBy=multi-user.target

重载service配置

systemctl daemon-reload

启动和开机自启

systemctl start node_exporter & systemctl enable node_exporter

默认端口9100添加到防火墙

firewall-cmd --zone=public  --add-port=9100/tcp  --permanent
    firewall-cmd --reload

验证

[http://10.24.11.202:9100/metrics][http_10.24.11.202_9100_metrics]

ip需要换成你自己的ip

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16][]

这样客户端就安装完成，下面服务端需要做一系列配置才能监控到

2.服务端prometheus.yml添加节点信息

编辑

vi /usr/local/prometheus/prometheus.yml

添加

- job_name: "202node"
        static_configs:
          - targets: ["10.24.11.202:9100"]
    #注意targets里面是双引号不是单引号

名称自己起，targets需要配置客户端的ip端口号

重启服务端

systemctl restart prometheus

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16 1][]

另一种方法是配置到目录里，节点多的时候可以考虑这种配置。

在prometheus 主配置文件配置定义子配置文件路径  
服务端子文件配置

- job_name: 'node'
        static_configs:
        file_sd_configs:
        - files:
          - metrics/node_exporter*.yaml
          refresh_interval: 2m

在prometheus安装目录下的targets目录下(在主配置文件定义metrics目录不存在则手动创建)创建文件 node\_exporter65.yaml

- targets: ['192.168.111.65:9100']    # 如果有多个node_exporter，配置到[]中,隔开添加不需要重启服务，服务自动发现node_exporter客户端
      labels:
       app: node-exporter
       job: node

3.Grafana添加仪表

然后导入仪表盘插件，先从官网复制id 8919  
官网：[Grafana Dashboards - discover and share dashboards for Grafana. | Grafana Labs][Grafana Dashboards - discover and share dashboards for Grafana. _ Grafana Labs]  
 找Node Exporter 点进去点击copy id to clipboard

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16 2][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16 3][]  
然后点击Grafana 加号+ --> import 粘贴id

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_12_color_FFFFFF_t_70_g_se_x_16][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16 4][]  
点击load  
然后在VictoriaMetrics选择刚配置的数据源Prometheus

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16 5][]  
点击import

默认会显示当前导入的仪表盘

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16 6][]

至此配置成功，后面的告警单独讲。下一章讲docker监控。

[GitHub - prometheus-community_windows_exporter_ Prometheus exporter for Windows machines]: https://github.com/prometheus-community/windows_exporter
[http_10.24.11.202_9100_metrics]: http://10.24.11.202:9100/metrics
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16]: /images/20220828/3dd620c1e3994123a23468db41073a4a.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16 1]: /images/20220828/224a9066946a44df842b0a1cb72fec60.png
[Grafana Dashboards - discover and share dashboards for Grafana. _ Grafana Labs]: https://grafana.com/grafana/dashboards
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16 2]: /images/20220828/bb142e49c2f248b5bbf0c420483ded4d.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_20_color_FFFFFF_t_70_g_se_x_16 3]: /images/20220828/623e9666b906489e9f979af79b091233.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAZ3NsczIwMDgwOA_size_12_color_FFFFFF_t_70_g_se_x_16]: /images/20220828/52bfa531c5dc424480c9ebe6cb9fa90c.png
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