指标服务器在部署期间没有已知的 pod 错误指标 [英] metrics-server no metrics known for pod error during deployment

问题描述

我有一个新创建的 AWS EKS 1.18 集群，应用程序部署在上面，一切正常，测试和负载测试成功，即我的 HPA 和指标服务器工作正常.

I have a newly created AWS EKS 1.18 Cluster, applications are deployed on it, everything is fine, test and load test are successful, namely, my HPA and metrics-server is working fine.

但是当我对服务进行部署时，metrics-server 正在提供无法获取 pod xxx 的 pod 指标:对于新部署的 pod，没有已知的 pod 指标，然后问题正在解决，一切又正常了.

But when I make a deployment to a service, metrics-server is giving unable to fetch pod metrics for pod xxx: no metrics known for pod for the newly deployed pod, then problem is being resolved and everything is fine again.

我的问题是，这是指标服务器的预期行为吗?还是我应该再次检查我的配置?

My question is, is this an expected behaviour for metrics-server? Or should I check my configs again?

非常感谢.

推荐答案

有一个 评论 在 github 上:

There is a comment about that on github:

Metrics Server 预计报告没有已知的 pod 指标"；直到缓存将被填充.新部署的指标服务器上的缓存可能为空，也可能会丢失新部署的 pod 的值.

Metrics Server is expected to report "no metrics known for pod" until cache will be populated. Cache can be empty on freshly deployed metrics-server or can miss values for newly deployed pods.

因此，如果我理解正确，它会按预期工作.我认为这个问题在 60 年代后通过 默认 指标每 60 秒抓取一次.

So if I understand correctly it's working as expected. I assume this problem is being solved after 60s as by default metrics are scraped every 60s.

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