k8s容器时间修改

如何处理 K8S 启动的POD，默认时区不准的问题。

# 示例

这里进入pod查看时间是不对的

[root@master bin]# kubectl get pod
NAME                            READY   STATUS    RESTARTS   AGE
elasticsearch-b4489c797-cc28f   1/1     Running   0          152m
eureka-0                        1/1     Running   0          4d2h
mysql-ddd86f8fb-7shp9           1/1     Running   0          8h
nginx-0                         1/1     Running   0          4d1h
redis-0                         1/1     Running   0          8d
zuul-0                          1/1     Running   0          4s
[root@elasticsearch-b4489c797-cc28f elasticsearch]# date
Tue Jan 12 09:58:27 UTC 2021
[root@elasticsearch-b4489c797-cc28f elasticsearch]# exit
exit

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# 使用 podpreset

k8s默认没有开启这个功能

[root@master bin]# kubectl get podpreset
error: the server doesn't have a resource type "podpreset"

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开启 podpreset 功能

添加一行配置- --runtime-config=settings.k8s.io/v1alpha1=true，enable-admission-plugins后面增加PodPreset。

[root@master bin]# vim /etc/kubernetes/manifests/kube-apiserver.yaml
[root@master bin]# kubectl get podpreset
No resources found in default namespace.

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# 创建PodPreset

[root@master bin]# vim preset.yml
[root@master bin]# cat preset.yml 
apiVersion: settings.k8s.io/v1alpha1
kind: PodPreset
metadata:
  name: allow-tz-env
  namespace: default
spec:
  selector:
    matchLabels:
  env:
    - name: TZ
      value: Asia/Shanghai
[root@master bin]# kubectl create -f preset.yml
podpreset.settings.k8s.io/allow-tz-env created
[root@master bin]# kubectl get podpresets
NAME           CREATED AT
allow-tz-env   2021-01-12T09:46:00Z

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# 删除pod验证

[root@master bin]# kubectl delete pod elasticsearch-b4489c797-cc28f
pod "elasticsearch-b4489c797-cc28f" deleted
[root@master bin]# kubectl get pod
NAME                            READY   STATUS    RESTARTS   AGE
elasticsearch-b4489c797-f2pw7   1/1     Running   0          8s
eureka-0                        1/1     Running   0          4d2h
mysql-ddd86f8fb-7shp9           1/1     Running   0          8h
nginx-0                         1/1     Running   0          4d1h
redis-0                         1/1     Running   0          8d
zuul-0                          1/1     Running   0          10m
[root@master bin]# kubectl exec -it elasticsearch-b4489c797-f2pw7 /bin/bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl kubectl exec [POD] -- [COMMAND] instead.
[root@elasticsearch-b4489c797-f2pw7 elasticsearch]# date
Tue Jan 12 17:59:08 CST 2021

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#K8s

上次更新: 4/2/2021, 4:16:20 PM

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