简介： BlackBox Exporter 顾名思义就是在应用程序的外部对其进行探测， 支持 HTTP、HTTPS、DNS、TCP、ICMP等方式对目标进行检测。

官方下载链接  

https://github.com/prometheus/blackbox_exporter/releases/download/v0.21.1/blackbox_exporter-0.21.1.linux-amd64.tar.gz

各版本下载网址https://github.com/prometheus/blackbox_exporter/releases

black_exporter 安装

下载

wget https://github.com/prometheus/blackbox_exporter/releases/download/v0.19.0/blackbox_exporter-0.19.0.linux-amd64.tar.gz

解压

tar xvf blackbox_exporter-0.19.0.linux-amd64.tar.gz

mv blackbox_exporter-0.19.0.linux-amd64 /usr/local/blackbox_exporter

使用systemd管理blackbox_exporter服务

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

systemctl daemon-reload

systemctl start blackbox_exporter

看眼启动状态

systemctl enable blackbox_exporter

配置好blackbox_exporter 后来到prometheus配置

vim prometheus.yml

#监控端口存活

  - job_name: 'port_status'

    metrics_path: /probe

    params:

      module: [tcp_connect]

    static_configs:

      - targets:

        - 192.168.11.141:9090

        - 192.168.11.143:3306    #可以写多个ip+端口

    relabel_configs:

      - source_labels: [__address__]

        target_label: __param_target

      - source_labels: [__param_target]

        target_label: instance

      - target_label: __address__

        replacement: 192.168.11.143:9115

#监控主机存活

   - job_name: 'ping_status'

    metrics_path: /probe

    params:

      module: [icmp]

    static_configs:

      - targets:

        - 192.168.11.141

        - 192.168.11.143 #可以写多个ip

    relabel_configs:

      - source_labels: [__address__]

        target_label: __param_target

      - source_labels: [__param_target]

        target_label: instance

      - target_label: __address__

        replacement: 192.168.11.143:9115

配置完检测一下语法

 ./promtool check config prometheus.yml

                                                   

然后重启一下prometheus

 systemctl restart prometheus

来到web端看下

192.168.11.141:9090/targets

看到我们新配置的端口和主机UP即可

然后来到Grafana配置监控页面

Dashboards | Grafana LabsBrowse a library of official and community-built dashboards.https://grafana.com/grafana/dashboards/?search=blackbox_exporter    直接搜索模板库按需下载

具体grafana配置请看