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quickshiftin
Asked: 2018-04-25 10:47:01 +0800 CST

GCP负载均衡器非常高的健康检查频率

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我在 GCP 上使用 HTTP 负载均衡器，通过 Kubernetes Ingress配置。

看起来健康检查请求的数量非常频繁：

10.0.4.1 - - [24/Apr/2018:17:53:25 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.5 - - [24/Apr/2018:17:53:25 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.7 - - [24/Apr/2018:17:53:25 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.5 - - [24/Apr/2018:17:53:25 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.7 - - [24/Apr/2018:17:53:25 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.0.4.1 - - [24/Apr/2018:17:53:25 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.5 - - [24/Apr/2018:17:53:26 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.0.4.1 - - [24/Apr/2018:17:53:26 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.7 - - [24/Apr/2018:17:53:26 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.5 - - [24/Apr/2018:17:53:26 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.5 - - [24/Apr/2018:17:53:26 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.7 - - [24/Apr/2018:17:53:27 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"
10.128.0.5 - - [24/Apr/2018:17:53:27 +0000] "GET / HTTP/1.1" 200 695 "-" "GoogleHC/1.0"

这是正常/预期的吗？正如你所看到的，我用200s 回应。我还检查了配置，轮询间隔应该是 60 秒：

nathan@test-k8s-201417:~$ gcloud compute health-checks describe health-check-id
checkIntervalSec: 60

我的期望是每 60 秒进行一次健康检查，而我看到的是每秒 100 秒！

load-balancing

1 个回答

  1. Best Answer

    这实际上是一种预期行为，因为 Google 探测器实际上发送的请求比您的健康检查间隔要多。

    但是您的后端健康检查将被标记为健康或不健康，具体取决于您设置的时间间隔以及是否收到“200”条消息。这是一些解释此行为的官方文档。

    • 2

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