Blackbox_exporter 监控实现

https://prometheus.io/download/#blackbox_exporter

HTTP/HTTPS : URL/API 可用性检测

TCP ：端口监听检测

ICMP ：主机存活检测

DNS ：域名解析

部署 blackbox exporter

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

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

ln -sv /apps/blackbox_exporter-0.19.0.linux-amd64 /apps/blackbox_exporter

创建 blackbox exporter 启动文件

vim /etc/systemd/system/blackbox-exporter.service 

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[Unit]
Description=Prometheus Blackbox Exporter
After=network.target

[Service]
Type=simple
User=root
Group=root
ExecStart=/apps/blackbox_exporter/blackbox_exporter \
  --config.file=/apps/blackbox_exporter/blackbox.yml \
  --web.listen-address=:9115
Restart=on-failure

[Install]
WantedBy=multi-user.target

启动并设置开机自启动

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systemctl restart blackbox-exporter.service && systemctl enable blackbox-exporter.service

blackbox exporter 实现URL监控

prometheus 调用 blackbox exporter 实现对 URL/ICMP 的监控

Prometheus URL 监控配置

vim /apps/prometheus/prometheus.yml

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#网站监控
 - job_name: 'http_status'
   metrics_path: /probe
   params:
     module: [http_2xx]
   static_configs:
     - targets: ['http://www.baidu.com', 'https://yuanshisen.com']
       labels:
         instance: http_status
         group: web
   relabel_configs:
     - source_labels: [__address__]  #relabel 通过_address_(当前目标地址)写入_param_target标签来创建一个label。
       target_label: __param_target  #监控目标 www.xiaomi.com,作_address_value
     - source_labels: [__param_target]  #监控目标
       target_label: url  #将监控目标与url 创建-个 label
     - target_label: __address__
       replacement: 192.168.15.110:9115

配置生效

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/apps/prometheus/promtool check config /apps/prometheus/prometheus.yml
Checking /apps/prometheus/prometheus.yml
  SUCCESS: 0 rule file found
  
# 重启服务
systemctl restart prometheus.service

# 访问浏览器
192.168.15.110:9115

blackbox exporter 实现 ICMP 监控

Prometheus ICMP 监控配置

vim /apps/prometheus/prometheus.yml

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#icmp 检测
 - job_name: 'ping_status'
   metrics_path: /probe
   params:
     module: [icmp]
   static_configs:
     - targets: ['192.168.3.15', "223.6.6.6"]
       labels:
         instance: 'ping_status'
         group: 'icmp'
   relabel_configs:
     - source_labels: [__address__]
       target_label: param_target
     - source_labels: [__param_target]
       target_label: ip  #ip 与_param_target 创建- label
     - target_label: __address__
       replacement: 192.168.15.110:9115

配置生效

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/apps/prometheus/promtool check config /apps/prometheus/prometheus.yml
Checking /apps/prometheus/prometheus.yml
  SUCCESS: 0 rule file found
  
# 重启服务
systemctl restart prometheus.service

# 访问浏览器
192.168.15.110:9115

blackbox exporter 实现端口监控

端口监控配置

vim /apps/prometheus/prometheus.yml

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#端口监控
 - job_name: 'port_status'
   metrics_path: /probe
   params:
     module: [tcp_connect]
   static_configs:
     - targets: ['192.168.15.100:9100', '192.168.15.100:80','192.168.15.100:22']
       labels:
         instance: 'port_status'
         group: 'port'
   relabel_configs:
     - source_labels: [__address__]
       target_label: param_target
     - source_labels: [__param_target]
       target_label: ip
     - target_label: __address__
       replacement: 192.168.15.110:9115

配置生效

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/apps/prometheus/promtool check config /apps/prometheus/prometheus.yml
Checking /apps/prometheus/prometheus.yml
  SUCCESS: 0 rule file found
  
# 重启服务
systemctl restart prometheus.service

# 访问浏览器
192.168.15.110:9115

grafana 导入模版