|NO.Z.00332|——————————|^^ 报错 ^^|——|KuberNetes&运维.V50|——|黑盒监控.v05|blackbox.v05|targets获取不到值|

附录一：targets获取不到值

### --- 报错现象：

targets获取不到值

### --- 报错分析：

~~~     黑盒监控是没有热更新的，而Prometheus是有热更新的，
~~~     监控是需要重启一下，才能加载它的配置down是因为IPV6的原因造成的，
~~~     需要更改为IPV4才会获取到数据
~~~     黑盒监控是需要怎么使用呢？每个区域都可以作一个黑盒监控，
~~~     blackbox可以使用二进制文件直接启，

### --- 解决方案：

~~~     解决上面实例targets取不到数据的问题

### --- 配置additional：prometheus-additional.yaml文件

[root@k8s-master01 additional.v1]# cat prometheus-additional.yaml 
- job_name: 'blackbox'
  metrics_path: /probe
  params:
    module: [http_2xx]  # Look for a HTTP 200 response.
  static_configs:
    - targets:
      - https://www.baidu.com/
  relabel_configs:
    - source_labels: [__address__]
      target_label: __param_target
    - source_labels: [__param_target]
      target_label: instance         # 使用instance获取标签数据
    - source_labels: [instance]
      target_label: target
    - target_label: __address__
      replacement: blackbox-exporter:9115  # The blackbox exporter's real hostname:port.

### --- 生成secrets：通过additional文件来生成

[root@k8s-master01 additional.v1]# kubectl create secret generic additional-scrape-configs --from-file=prometheus-additional.yaml --dry-run -oyaml > additional-scrape-configs.yaml

### --- 查看生成的secrets

[root@k8s-master01 additional.v1]#  more additional-scrape-configs.yaml
apiVersion: v1
data:
  prometheus-additional.yaml: LSBqb2JfbmFtZTogJ2JsYWNrYm94JwogIG1ldHJpY3NfcGF0aDogL3Byb2JlCiAgcGFyYW1zOgogICAgbW9kdWxlOiBbaHR0cF8yeHhdICAjIExvb2sgZm9yIGEgSFRUUCAyMDAgcmVzcG9uc2UuCiAgc3RhdGljX2
NvbmZpZ3M6CiAgICAtIHRhcmdldHM6CiAgICAgIC0gaHR0cHM6Ly93d3cuYmFpZHUuY29tLwogIHJlbGFiZWxfY29uZmlnczoKICAgIC0gc291cmNlX2xhYmVsczogW19fYWRkcmVzc19fXQogICAgICB0YXJnZXRfbGFiZWw6IF9fcGFyYW1fdGFyZ2V0Ci
AgICAtIHNvdXJjZV9sYWJlbHM6IFtfX3BhcmFtX3RhcmdldF0KICAgICAgdGFyZ2V0X2xhYmVsOiBpbnN0YW5jZQogICAgLSBzb3VyY2VfbGFiZWxzOiBbaW5zdGFuY2VdCiAgICAgIHRhcmdldF9sYWJlbDogdGFyZ2V0CiAgICAtIHRhcmdldF9sYWJlbD
ogX19hZGRyZXNzX18KICAgICAgcmVwbGFjZW1lbnQ6IGJsYWNrYm94LWV4cG9ydGVyOjkxMTUgICMgVGhlIGJsYWNrYm94IGV4cG9ydGVyJ3MgcmVhbCBob3N0bmFtZTpwb3J0Lgo=
kind: Secret
metadata:
  creationTimestamp: null
  name: additional-scrape-configs

### --- 查看生成的secrets
~~~     创建生成的secrets

[root@k8s-master01 additional.v1]# kubectl replace -f additional-scrape-configs.yaml -n monitoring
secret/additional-scrape-configs replaced

### --- 查看生成的secrets

[root@k8s-master01 additional.v1]# kubectl get secrets -n monitoring
NAME                              TYPE                                  DATA   AGE
additional-scrape-configs         Opaque                                1      94m

### --- 更新configmap
~~~     将configmap更新为IPV4的获取方式

[root@k8s-master01 additional.v1]# vim blackbox-configmap.yaml 
apiVersion: v1
data:
  blackbox.yml: |-
    modules:
      http_2xx:
        prober: http
      http:
        preferred_ip_protocol: "ip4"     # 更改成IPV4的解析地址
      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
kind: ConfigMap
metadata:
  name: blackbox-conf
  namespace: monitoring

### --- 重新触发blackbox-configmap的配置

[root@k8s-master01 additional.v1]# kubectl replace -f blackbox-configmap.yaml -n monitoring
configmap/blackbox-conf replaced

### --- 重新触发Prometheus

[root@k8s-master01 additional.v1]# kubectl delete po prometheus-k8s-0 -n monitoring
pod "prometheus-k8s-0" deleted

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Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart

                                                                                                                                                   ——W.S.Landor

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