Question

我有一个复制控制器，可以继续启动一个pod，但它永远不会启动。我如何访问复制控制器日志，以便我可以调试它？ $ kubectl describe rc：

Name:       jenkins-leader-restored
Namespace:  default
Image(s):   gcr.io/cloud-solutions-images/jenkins-gcp-leader:master-5ca73a6
Selector:   name=jenkins,role=leader
Labels:     name=jenkins,role=leader
Replicas:   0 current / 1 desired
Pods Status:    0 Running / 0 Waiting / 0 Succeeded / 0 Failed
No volumes.
Events:
  FirstSeen LastSeen    Count   From                SubobjectPath   Reason          Message
  ───────── ────────    ─────   ────                ─────────────   ──────          ───────
  15m       15m     1   {replication-controller }           SuccessfulCreate    Created pod: jenkins-leader-restored-xxr93
  12m       12m     1   {replication-controller }           SuccessfulCreate    Created pod: jenkins-leader-restored-1e44w
  11m       11m     1   {replication-controller }           SuccessfulCreate    Created pod: jenkins-leader-restored-y3llu
  8m        8m      1   {replication-controller }           SuccessfulCreate    Created pod: jenkins-leader-restored-wfd70
  8m        8m      1   {replication-controller }           SuccessfulCreate    Created pod: jenkins-leader-restored-8ji09
  5m        5m      1   {replication-controller }           SuccessfulCreate    Created pod: jenkins-leader-restored-p4wbc
  4m        4m      1   {replication-controller }           SuccessfulCreate    Created pod: jenkins-leader-restored-tvreo
  1m        1m      1   {replication-controller }           SuccessfulCreate    Created pod: jenkins-leader-restored-l6rpy
  56s       56s     1   {replication-controller }           SuccessfulCreate    Created pod: jenkins-leader-restored-4asg5

将自动图像构建与Jenkins，Packer和Kubernetes repo一起使用，实践恢复备份＆＃39;部分。

Answer 1

Prashanth B.确定了我的问题的根本原因，即有两个复制控制器使用相同的选择器，同时运行不同的副本值。

Google Compute Instance上的kubelet（运行pod）的日志位置为/var/log/kubelet.log。看这里会有助于指出吊舱立即被移除。

我的故障排除可能是这样的：

确定该pod未按预期运行： kubectl get pods
检查复制控制器： kubectl describe rc

搜索已创建的pod的日志，如上一个命令所示： grep xxr93 /var/log/kubelet.log

user@gke-stuff-d9adf8e28-node-13cl:~$ grep xxr93 /var/log/kubelet.log 
I1203 16:59:09.337110    3366 kubelet.go:2005] SyncLoop (ADD): "jenkins-leader-restored-xxr93_default"
I1203 16:59:09.345356    3366 kubelet.go:2008] SyncLoop (UPDATE): "jenkins-leader-restored-xxr93_default"
I1203 16:59:09.345423    3366 kubelet.go:2011] SyncLoop (REMOVE): "jenkins-leader-restored-xxr93_default"
I1203 16:59:09.345503    3366 kubelet.go:2101] Failed to delete pod "jenkins-leader-restored-xxr93_default", err: pod not found
I1203 16:59:09.483104    3366 manager.go:1707] Need to restart pod infra container for "jenkins-leader-restored-xxr93_default" because it is not found
I1203 16:59:13.695134    3366 kubelet.go:1823] Killing unwanted pod "jenkins-leader-restored-xxr93"
E1203 17:00:47.026865    3366 manager.go:1920] Error running pod "jenkins-leader-restored-xxr93_default" container "jenkins": impossible: cannot find the mounted volumes for pod "jenkins-leader-restored-xxr93_default"

复制控制器未启动Pod

1 个答案: