Pod 不断重启并处于 CrashLoopBackOff 状态

Question

我们的其中一个 Pod 无法启动，并且会不断重启并且处于 CrashLoopBackOff 状态：

姓名准备状态重新开始年龄

quasar-api-staging-14c385ccaff2519688add0c2cb0144b2-3r7v4   0/1      
CrashLoopBackOff   72         5h

描述 pod 看起来像这样（只是事件）：

来自 SubobjectPath 原因消息的 FirstSeen LastSeen 计数

  57m       57m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 7515ced7f49c
  57m       57m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 7515ced7f49c
  52m       52m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 2efe8885ad49
  52m       52m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 2efe8885ad49
  46m       46m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id a4361ebc3c06
  46m       46m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id a4361ebc3c06
  41m       41m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 99bc3a8b01ad
  41m       41m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 99bc3a8b01ad
  36m       36m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 3e873c664cde
  36m       36m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 3e873c664cde
  31m       31m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 97680dac2e12
  31m       31m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 97680dac2e12
  26m       26m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 42ef4b0eea73
  26m       26m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 42ef4b0eea73
  21m       21m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 7dbd65668733
  21m       21m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 7dbd65668733
  15m       15m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id d372cb279fff
  15m       15m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id d372cb279fff
  10m       10m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id bc7f5a0fe5d4
  10m       10m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id bc7f5a0fe5d4
  5m        5m      1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id b545a71af1d2
  5m        5m      1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id b545a71af1d2
  3h        25s     43  {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Pulled  Container image "us.gcr.io/skywatch-app/quasar-api-staging:15.0" already present on machine
  25s       25s     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 3e4087281881
  25s       25s     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 3e4087281881
  3h        5s      1143    {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Backoff Back-off restarting failed docker container

pod 的日志也没有显示太多：

Pod "quasar-api-staging-14c385ccaff2519688add0c2cb0144b2-3r7v4" in namespace "default": container "quasar-api-staging" is in waiting state.

我已经能够在本地运行 pod，它似乎可以工作。我不知道还有什么要检查或尝试的。任何帮助或故障排除步骤将不胜感激！

Answer 1

您可以尝试运行kubectl logs <podid> --previous以查看来自容器的前一个实例的日志。