omarse/windowstimezoner

Changing Timezone for Kubernetes Windows-Based Nodes (镜像: omarse/windowstimezoner)

镜像概述

This Docker image helps configure the timezone of Windows-based nodes in Kubernetes clusters (e.g., Azure AKS, Amazon EKS). It leverages a DaemonSet to deploy pods on every Windows node, which remotely adjusts the node's timezone via SSH.

核心功能

• DaemonSet Deployment: Ensures a pod runs on all existing/new Windows nodes in the cluster.
• Remote Configuration: Uses plink.exe to SSH into nodes and execute timezone change scripts.
• Env Var Customization: Adjust timezone, node credentials, and target node IP through environment variables.

使用场景

• Kubernetes clusters with Windows nodes needing consistent timezone settings.
• Cross-region clusters where default node timezones require adjustment.
• Enterprises running legacy Windows apps in Kubernetes that need timezone alignment.

配置说明

1. Build the Image

Prerequisites: Docker Desktop (Windows engine enabled).
Steps:

1. Create a folder (e.g., TimeZoneImage) and add:
   • plink.exe (64-bit from Putty官网).
   • script.bat: Timezone change script (replace #TimeZone# with env var).
   • start.ps1: Entrypoint to handle env vars and run plink.
   • Dockerfile: Base image mcr.microsoft.com/windows/servercore:ltsc2019.

Dockerfile:

dockerfile
FROM mcr.microsoft.com/windows/servercore:ltsc2019
COPY plink.exe /
COPY script.bat /
COPY start.ps1 /
SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; Set-ExecutionPolicy Unrestricted -Force;"]
ENTRYPOINT ["powershell.exe", "c:\\start.ps1"]

Build Commands:

powershell
docker build . -t omarse/windowstimezoner
# Push to registry (e.g., Azure ACR)
docker tag omarse/windowstimezoner <your-acr>.azurecr.io/windowstimezoner
docker push <your-acr>.azurecr.io/windowstimezoner

2. Deploy DaemonSet

YAML Example:

yaml
apiVersion: apps/v1
kind: DaemonSet
metadata:
  namespace: kube-system
  name: wintimezonedaemon-ds
spec:
  selector:
    matchLabels:
      name: wintimezonedaemon-ds
  template:
    metadata:
      labels:
        name: wintimezonedaemon-ds
    spec:
      nodeSelector:
        "beta.kubernetes.io/os": windows
      containers:
      - name: wintimezonedaemon
        env:
          - name: nodeIP
            valueFrom:
              fieldRef:
                fieldPath: status.hostIP
          - name: timezone
            value: "Eastern Standard Time" # Replace with your timezone
          - name: user
            value: "admin" # Replace with node username
          - name: pwd
            value: "your-password" # Replace with node password
        image: <your-acr>.azurecr.io/windowstimezoner:latest
        resources:
          limits:
            cpu: 300m
            memory: 400M
          requests:
            cpu: 150m
            memory: 200M

Deploy Command:

bash
kubectl create -f daemonset.yaml

参考链接

• https://github.com/mohaom/TimeZoneImage
• 详细文章