4

我正在尝试使用带有 prometheus 的 blackbox_exporter ping 一个目标列表,但我似乎只能探测 blackbox_exporters 而不是我想要检查的实际目标。

我在黑盒中找不到任何关于在哪里列出目标的文档,所以我做了一个奇怪的假设,即它使用了普罗米修斯配置中提供的目标,但据我所知,这只是让普罗米修斯相信有很多黑盒探测。

这是我的 blackbox_exporter 配置

 modules:
  icmp:
    prober: icmp
    timeout: 5s
    icmp:
      preferred_ip_protocol: ip4

但是,当我访问 blackbox 的 web GUI 时,配置包含一堆我没有指定的参数。

modules:
  icmp:
    prober: icmp
    timeout: 5s
    http:
      ip_protocol_fallback: true
    tcp:
      ip_protocol_fallback: true
    icmp:
      preferred_ip_protocol: ip4
      ip_protocol_fallback: true
    dns:
      ip_protocol_fallback: true

这是我的普罗米修斯配置

global:
  scrape_interval:     15s
  evaluation_interval: 15s

  - job_name: 'blackbox'
    metrics_path: /probe
    params:
      module: [icmp]
    static_configs:
      - targets:
        - icmp-target1 # supposed to be a switch, router, pc or anything that responds to ping
        - icmp-target2

预期结果:在旅途中的某个地方,我预计我的目标会被 blackbox 和 prometheus 收集结果。

实际结果:Prometheus 通过 HTTP 为其目标列表中列出的每个目标发送探测请求。

4

1 回答 1

9

虽然有点令人困惑,但 blackbox_exporter README 确实解释了如何配置它,请参阅Prometheus 配置部分。

您的黑盒配置是正确的。

对于您的 Prometheus 配置,您需要以下内容。我假设黑盒导出器和 Prometheus 位于同一位置(因此是localhost),否则适应。

# this is to scrape blackbox itself (this is optional)
- job_name: blackbox
  static_configs:
  - targets: ['localhost:9115']


- job_name: blackbox-ping
  metrics_path: /probe
  params:
    module: [icmp]
  static_configs:
    - targets:
      - 192.168.1.1   # <== Put here your targets
  relabel_configs:    # <== This comes from the blackbox exporter README
    - source_labels: [__address__]
      target_label: __param_target
    - source_labels: [__param_target]
      target_label: instance
    - target_label: __address__
      replacement: localhost:9115 # Blackbox exporter.

另一个令人困惑的部分是回答这个问题:“我如何将黑盒导出器用于多种协议,比如 ICMP 和 HTTP?” 在这种情况下,有多种选择,但更明确的一种是每个协议有一个部分。这就是我称之为 ICMP 探测的原因blackbox-ping。假设我们还想要 HTTP 探测,我们将添加另一个部分:

- job_name: blackbox-http
  metrics_path: /probe
  params:
    module: [http_2xx]
  static_configs:
    - targets:
      - https://www.google.com  # <== your targets here
  relabel_configs:              # <== This comes from the blackbox exporter README
    - source_labels: [__address__]
      target_label: __param_target
    - source_labels: [__param_target]
      target_label: instance
    - target_label: __address__
      replacement: localhost:9115 # Blackbox exporter.

您还需要相应的黑盒配置:

modules:
  http_2xx:        # <== This is the new section for HTTP
    prober: http
    timeout: 10s   # <== This depends on what you want to do
    http:
      valid_status_codes: []  # Defaults to 2xx
      method: HEAD              # <== This depends on what you want to do
      no_follow_redirects: true # <== this depends on what you want to do
  icmp:                         # <== this is the one you already have
    prober: icmp
    timeout: 10s                # <== This depends on what you want to do
    icmp:
      preferred_ip_protocol: ip4
于 2019-04-06T08:54:59.170 回答