如何查看终止的Pod的日志 [英] How to see logs of terminated pods

问题描述

我正在运行硒集线器，并且豆荚经常被终止.我想看一下终止的豆荚的日志.怎么做?

I am running selenium hubs and my pods are getting terminated frequently. I would like to look at the logs of the pods which are terminated. How to do it?

NAME                                               READY     STATUS              RESTARTS   AGE
chrome-75-0-0e5d3b3d-3580-49d1-bc25-3296fdb52666   0/2       Terminating         0          49s
chrome-75-0-29bea6df-1b1a-458c-ad10-701fe44bb478   0/2       Terminating         0          23s
chrome-75-0-8929d8c8-1f7b-4eba-96f2-918f7a0d77f5   0/2       ContainerCreating   0          7s

kubectl logs chrome-75-0-8929d8c8-1f7b-4eba-96f2-918f7a0d77f5
Error from server (NotFound): pods "chrome-75-0-8929d8c8-1f7b-4eba-96f2-918f7a0d77f5" not found
$ kubectl logs chrome-75-0-8929d8c8-1f7b-4eba-96f2-918f7a0d77f5 --previous
Error from server (NotFound): pods "chrome-75-0-8929d8c8-1f7b-4eba-96f2-918f7a0d77f5" not found

推荐答案

运行 kubectl日志-p 将从API级别的现有资源中获取日志.这意味着使用此命令将无法使用终止的Pod的日志.

Running kubectl logs -p will fetch logs from existing resources at API level. This means that terminated pods' logs will be unavailable using this command.

如其他答案所述，最好的方法是通过

As mentioned in other answers, the best way is to have your logs centralized via logging agents or directly pushing these logs into an external service.

或者给定Kubernetes ，您也许可以获取日志直接从托管Pod的节点中的日志轮换文件中获取.但是，此选项可能取决于Kubernetes的实现，因为触发pod逐出时可能会删除日志文件.

Alternatively and given the logging architecture in Kubernetes, you might be able to fetch the logs directly from the log-rotate files in the node hosting the pods. However, this option might depend on the Kubernetes implementation as log files might be deleted when the pod eviction is triggered.

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