prometheus-blackbox安装

https://www.cnblogs.com/fsckzy/p/12614176.html

黑盒探测，---类似于银针试毒，这个插件是装在服务器本身
1、启动插件
2、prometheus增加targets

提前创建相应的目录，文件提前创建/data/prometheus/blackbox_exporter/blackbox.yml

 # 官方默认的配置文件
modules:
 http_2xx:
    prober: http
  http_post_2xx:
    prober: http
    http:
      method: POST
  tcp_connect:
    prober: tcp
  pop3s_banner:
    prober: tcp
    tcp:
      query_response:
      - expect: "^+OK"
      tls: true
      tls_config:
        insecure_skip_verify: false
  ssh_banner:
    prober: tcp
    tcp:
      query_response:
      - expect: "^SSH-2.0-"
  irc_banner:
    prober: tcp
    tcp:
      query_response:
      - send: "NICK prober"
      - send: "USER prober prober prober :prober"
      - expect: "PING :([^ ]+)"
        send: "PONG ${1}"
      - expect: "^:[^ ]+ 001"
  icmp:
    prober: icmp

2、docker启动，端口9115

docker run --rm -d -p 9115:9115 --name blackbox_exporter -v /usr/share/zoneinfo/Asia/Shanghai:/etc/localtime:ro -v /data/prometheus/blackbox_exporter/blackbox.yml:/config/blackbox.yml prom/blackbox-exporter:master --config.file=/config/blackbox.yml

3、prometheus增加target，编辑配置文件

#http检测配置
- job_name: 'blackbox'
  scrape_interval: 10s
  metrics_path: /probe
  params:
    module: [http_2xx]
  static_configs:
    - targets:
      - http://baidu.com
      - https://www.baidu.com/
      - http://www.ddriven-tech.com
      - https://misi.gooagoo.com
      - https://passport.gooagoo.com/
      - files.gooagoo.com
      - mis.gooagoo.com
      #- http://abcdef.test.goago.cn
  relabel_configs:
    - source_labels: [__address__]
      target_label: __param_target
    - source_labels: [__param_target]
      target_label: instance
    - target_label: __address__
      replacement: 192.168.2.241:9115 # blackbox安装在哪台机器
#tcp检测配置
  - job_name: blackbox_tcp
    metrics_path: /probe
    params:
      module: [tcp_connect]
    static_configs:
      - targets:
        - 192.168.1.2:280
        - 192.168.1.2:7013

    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: 192.168.1.99:9115 # Blackbox exporter.

4、添加报警规则

###########状态码监控##############
  - alert: 状态码检测
    expr: probe_http_status_code{job="blackbox"} != 200
    for: 5m
    labels:
      severity: "毁灭级"
    annotations:
      summary: "请求URL状态码非200"
      description: "请求{{$.Labels.instance}}状态码非200-可能挂了，请麻溜瞅瞅"

  - alert: 证书过期时间检测
    expr: probe_ssl_earliest_cert_expiry {job="blackbox"} -time() < 86400 * 30
    for: 5m
    labels:
      severity: "毁灭级"
    annotations:
      summary: "证书过期时间不足30天"
      description: "{{$.Labels.instance}}证书还有30天到期，请及时更换"

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参考文档
https://blog.csdn.net/qq_25934401/article/details/84325356