用Blackbox Exporter to Monitor web和端口 - wxlinux 文档 不错

1.安装exporter

1.wget https://github.com/prometheus/blackbox_exporter/releases/download/v0.12.0/blackbox_exporter-0.12.0.linux-amd64.tar.gz
2.tar -zxf blackbox_exporter-0.12.0.linux-amd64.tar.gz
3.mv blackbox_exporter-0.14.0.linux-amd64 /usr/local/blackbox_exporter
4../blackbox_exporter --version

2.vim /lib/systemd/system/blackbox_exporter.service   --  变成系统服务 netstat -anptu|grep 9115

[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

3.监控web和端口状态

  - job_name: web_status
    metrics_path: /probe
    params:
      module: [http_2xx]
    static_configs:
      - targets: ['http://192.168.1.49:8080/']
        labels:
          instance: web_status
          group: web
      - targets: ['https://www.baidu.com/']
        labels:
          instance: baidu_status
          group: baidu
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - target_label: __address__
        replacement: 127.0.0.1:9115
  - job_name: 'port_status'
    metrics_path: /probe
    params:
      module: [tcp_connect]
    static_configs:
      - targets: ['192.168.1.49:8080']
        labels:
          instance: 'port_status'
          group: 'tcp'
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target

      - target_label: __address__
        replacement: 127.0.0.1:9115

4.dashboard  -- 9665 和 7587

5.参考：https://blog.csdn.net/qq_43190337/article/details/100577728

6.监控端口和服务状态

  - alert: NodePortavaibility
    expr: probe_http_duration_seconds{} <  0.0000001
    for: 2m
    labels:
      severity: warning
    annotations:
      summary: "{{$labels.instance}}: port-不可以-使用"
      description: "{{$labels.instance}}: 端口响应时间大于 0.5us (当前值: {{ $value }})"

  - alert: Portisup
    expr: probe_success{} != 1
    for: 2m
    labels:
      severity: warning
    annotations:
      summary: "{{$labels.instance}}: port-不可以-不等于1"
      description: "{{$labels.instance}}: 端口结果不等于1 (当前值: {{ $value }})"