Kubernetes 声纳浮标DNS测试失败，失败可能'；无法手动复制

我正在K8S集群上运行sonobuoy，DNS测试失败，但我无法复制该问题。 我如何理解他们失败的原因

K8S版本-v1.9.11

Infra-Azure，acs引擎v0.23.1

声纳浮标版本-v0.11.6（最新版本支持K8S v1.9.11）

运行命令-

sonobuoy run --kube-conformance-image "gcr.io/heptio-images/kube-conformance:v1.9"

DNS测试失败：

[sig-network] DNS should provide DNS for services  [Conformance]
[sig-network] DNS should provide DNS for the cluster  [Conformance]

这是K8S配置基准测试工作的一部分，并在投入使用之前对其进行测试

我手动运行的测试（我从日志中提取）：

日志显示了许多：

Jan  8 10:17:47.221: INFO: Unable to read wheezy_tcp@PodARecord from pod dns-test-7dbef827-132e-11e9-bd06-e20b33d4fc6d: the server could not find the requested resource (get pods dns-test-7dbef827-132e-11e9-bd06-e20b33d4fc6d)
Jan  8 10:17:47.346: INFO: Unable to read jessie_tcp@PodARecord from pod dns-test-7dbef827-132e-11e9-bd06-e20b33d4fc6d: the server could not find the requested resource (get pods dns-test-7dbef827-132e-11e9-bd06-e20b33d4fc6d)
Jan  8 10:17:47.356: INFO: Lookups using dns-test-7dbef827-132e-11e9-bd06-e20b33d4fc6d failed for: [wheezy_tcp@PodARecord jessie_tcp@PodARecord]

最后是：

• Failure [619.219 seconds]
[sig-network] DNS
/workspace/anago-v1.9.4-beta.0.53+bee2d1505c4fe8/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/network/framework.go:22
should provide DNS for services  [Conformance] [It]
/workspace/anago-v1.9.4-beta.0.53+bee2d1505c4fe8/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/framework/framework.go:648

Expected error:
    <*errors.errorString | 0xc42026ab20>: {
        s: "timed out waiting for the condition",
    }
    timed out waiting for the condition
not to have occurred

/workspace/anago-v1.9.4-beta.0.53+bee2d1505c4fe8/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/network/dns.go:170

•故障[619.219秒]
[sig网络]DNS
/workspace/anago-v1.9.4-beta.0.53+bee2d1505c4fe8/src/k8s.io/kubernetes/_-output/dockerized/go/src/k8s.io/kubernetes/test/e2e/network/framework.go:22
应为服务[合规性][It]提供DNS
/workspace/anago-v1.9.4-beta.0.53+bee2d1505c4fe8/src/k8s.io/kubernetes/_-output/dockerized/go/src/k8s.io/kubernetes/test/e2e/framework/framework.go:648
预期错误：
: {
s:“等待条件超时”，
}
等待条件时超时
不可能发生
/workspace/anago-v1.9.4-beta.0.53+bee2d1505c4fe8/src/k8s.io/kubernetes/_-output/dockerized/go/src/k8s.io/kubernetes/test/e2e/network/dns.go:170

最终，我希望了解失败的根本原因，并更好地了解如何更好地调试它

在库伯内特斯的回购协议中

• Failure [619.219 seconds]
[sig-network] DNS
/workspace/anago-v1.9.4-beta.0.53+bee2d1505c4fe8/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/network/framework.go:22
should provide DNS for services  [Conformance] [It]
/workspace/anago-v1.9.4-beta.0.53+bee2d1505c4fe8/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/framework/framework.go:648

Expected error:
    <*errors.errorString | 0xc42026ab20>: {
        s: "timed out waiting for the condition",
    }
    timed out waiting for the condition
not to have occurred

/workspace/anago-v1.9.4-beta.0.53+bee2d1505c4fe8/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/network/dns.go:170