kubernetes timezone in POD with command and argument

Question

I want to change timezone with command. I know applying hostpath.

Could you know how to apply command ?

ln -snf /user/share/zoneinfor/$TZ /etc/localtime

it works well within container. But I don't know applying with command and arguments in yaml file.

Answer 1

You can change the timezone of your pod by using specific timezone config and hostPath volume to set specific timezone. You're yaml file will look something like:

apiVersion: v1
kind: Pod
metadata:
  name: busybox-sleep
spec:
  containers:
  - name: busybox
    image: busybox
    args:
    - sleep
    - "1000000"
    volumeMounts:
    - name: tz-config
      mountPath: /etc/localtime
  volumes:
    - name: tz-config
      hostPath:
        path: /usr/share/zoneinfo/Europe/Prague
        type: File

If you want it across all pod, deployment you need to add volume and volumeMounts to all your deployment file and change the path value in hostPath section to the timezone you want to set.

Answer 2

Setting TZ environment variable as below works fine for me on GCP Kubernetes.

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo
spec:
  replicas: 1
  selector:
    matchLabels:
        app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: demo
        image: gcr.io/project/image:master
        imagePullPolicy: Always
        env:
            - name: TZ
              value: Europe/Warsaw
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      terminationGracePeriodSeconds: 0