prometheus+grafana 使用blackbox_exporte监控站点url

1.1 下载blackbox_exporte插件

在https://github.com/prometheus/blackbox_exporter  上下载blackbox_exporte对应版本安装包，并上传到prometheus 服务器 /usr/local  目录

1.2 安装blackbox_exporte

[root@rancher local]#tar xvf blackbox_exporter-0.25.0.linux-amd64.tar.gz

[root@rancher local]#mv blackbox_exporter-0.25.0.linux-amd64 blackbox_exporter

[root@rancher local]#vim /usr/lib/systemd/system/blackbox_exporter.service

[Unit]
Description=blackbox_exporter
After=network.target

[Service]
User=root
Type=simple
ExecStart=/usr/local/blackbox_exporter/blackbox_exporter --config.file=/usr/local/blackbox_exporter/blackbox.yml
Restart=on-failure

[Install]
WantedBy=multi-user.target

[root@rancher local]#systemctl enable blackbox_exporter.service

[root@rancher local]#systemctl start blackbox_exporter.service

浏览器访问http://10.12.121.198:9115/

1.2 配置prometheus

[root@rancher prometheus]# vim /data/prometheus/prometheus.yml   ###在最后2行添加


##### blackbox站点监控
  - job_name: 'blackbox'
    scrape_interval: 1m
    metrics_path: /probe
    params:
      module: [http_2xx]
    static_configs:
      - targets:
        - 'https://www.baidu.com'       ##监控站点
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: 10.12.121.198:9115  

  - job_name: 'port_status'
    metrics_path: /probe
    params:
      module: [tcp_connect]
    static_configs:
      - targets: ['10.12.121.198:3306','10.12.121.198:80']  ####监控端口
        labels:
          instance: 'port_status'
          group: 'tcp'
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: 10.12.121.198:9115

1.3 配置prometheus 告警规则

[root@rancher rules]#vim /data/prometheus/rules/prot_ruler.yml   ##配置告警规则
groups:
- name: blackbox_network_stats
  rules:
  - alert: '服务探测失败'
    expr: probe_success == 0
    for: 60s
    labels:
      severity: high
      alertinfo: push_blackbox_alert
    annotations:
      summary: "{{ $labels.instance }}探测失败"
      description: "服务探测失败，请检查业务是否正常!!!"

[root@rancher rules]# systemctl reload prometheus.service   ##重新加载配置

1.4 配置granfan看板

仪表盘——新建——导入

模版ID     9965