为什么kubernetes coredns错误提示不通过就绪探测刷新

My CoreDNS pod获得红色状态并显示此错误：

Readiness probe failed: Get http://172.30.224.3:8080/health: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

现在，我将url复制到k8s主机的请求：

[root@ops001 work]# curl http://172.30.224.3:8080/health
OK

这是我的探测器配置：

           "readinessProbe": {
              "httpGet": {
                "path": "/health",
                "port": 8080,
                "scheme": "HTTP"
              },
              "timeoutSeconds": 1,
              "periodSeconds": 10,
              "successThreshold": 1,
              "failureThreshold": 3
            }

问题是：为什么服务器返回成功和kubernetes仪表板给出错误提示而不刷新

这是命令输出：

$ kubectl get pods -n kube-system
NAME                                  READY   STATUS    RESTARTS   AGE
coredns-df554df8-76lrw                1/1     Running   1          29h
kubernetes-dashboard-6466b68b-z6z78   1/1     Running   0          16d
traefik-ingress-controller-hx4xd      1/1     Running   0          29d

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kubectl获取吊舱的输出-n kube系统请发布

kubectl描述吊舱的输出coredns-df554df8-76lrw-n kube系统