linux - Kubernetes Pod 终止 - 退出代码 137

Question

我需要一些关于 k8s 1.14 和在其上运行 gitlab 管道的问题的建议。许多作业都抛出退出代码 137 错误，我发现这意味着容器突然终止。

集群信息:

Kubernetes 版本:1.14
正在使用的云:AWS EKS
节点:C5.4xLarge

深入挖掘后，我发现了以下日志:

**kubelet: I0114 03:37:08.639450**  4721 image_gc_manager.go:300] [imageGCManager]: Disk usage on image filesystem is at 95% which is over the high threshold (85%). Trying to free 3022784921 bytes down to the low threshold (80%).

**kubelet: E0114 03:37:08.653132**  4721 kubelet.go:1282] Image garbage collection failed once. Stats initialization may not have completed yet: failed to garbage collect required amount of images. Wanted to free 3022784921 bytes, but freed 0 bytes

**kubelet: W0114 03:37:23.240990**  4721 eviction_manager.go:397] eviction manager: timed out waiting for pods runner-u4zrz1by-project-12123209-concurrent-4zz892_gitlab-managed-apps(d9331870-367e-11ea-b638-0673fa95f662) to be cleaned up

**kubelet: W0114 00:15:51.106881**   4781 eviction_manager.go:333] eviction manager: attempting to reclaim ephemeral-storage

**kubelet: I0114 00:15:51.106907**   4781 container_gc.go:85] attempting to delete unused containers

**kubelet: I0114 00:15:51.116286**   4781 image_gc_manager.go:317] attempting to delete unused images

**kubelet: I0114 00:15:51.130499**   4781 eviction_manager.go:344] eviction manager: must evict pod(s) to reclaim ephemeral-storage 

**kubelet: I0114 00:15:51.130648**   4781 eviction_manager.go:362] eviction manager: pods ranked for eviction:

 1. runner-u4zrz1by-project-10310692-concurrent-1mqrmt_gitlab-managed-apps(d16238f0-3661-11ea-b638-0673fa95f662)
 2. runner-u4zrz1by-project-10310692-concurrent-0hnnlm_gitlab-managed-apps(d1017c51-3661-11ea-b638-0673fa95f662)

 3. runner-u4zrz1by-project-13074486-concurrent-0dlcxb_gitlab-managed-apps(63d78af9-3662-11ea-b638-0673fa95f662)

 4. prometheus-deployment-66885d86f-6j9vt_prometheus(da2788bb-3651-11ea-b638-0673fa95f662)

 5. nginx-ingress-controller-7dcc95dfbf-ld67q_ingress-nginx(6bf8d8e0-35ca-11ea-b638-0673fa95f662)

然后 pod 被终止，导致退出代码 137s。

任何人都可以帮助我理解原因和克服这个问题的可能解决方案吗？

谢谢 :)

Answer 1

退出代码 137 并不一定意味着 OOMKilled。它表示容器收到 SIGKILL 失败(一些中断或“oom-killer”[OUT-OF-MEMORY])

如果 pod 被 OOMKilled，当你描述 pod 时你会看到下面的一行

      State:        Terminated
      Reason:       OOMKilled

我见过类似的错误，但无法找出根本原因，对我们来说原因提到:Error