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main.go
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main.go
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package main
import (
"context"
"fmt"
"os"
"path/filepath"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
)
func checkError(err error) {
if err != nil {
panic(err.Error())
}
}
func main() {
if len(os.Args) != 4 {
fmt.Println("Usage:", os.Args[0], "namespace", "name", "toDir")
return
}
namespace := os.Args[1]
name := os.Args[2]
toDir := os.Args[3]
config, err := rest.InClusterConfig()
checkError(err)
clientset, err := kubernetes.NewForConfig(config)
checkError(err)
configMap, err := clientset.CoreV1().ConfigMaps(namespace).Get(context.TODO(), name, metav1.GetOptions{})
checkError(err)
os.MkdirAll(toDir, 0644)
checkError(err)
for key, value := range configMap.Data {
f, err := os.Create(filepath.Join(toDir, key))
checkError(err)
defer f.Close()
f.WriteString(value)
f.Sync()
}
for key, value := range configMap.BinaryData {
f, err := os.Create(filepath.Join(toDir, key))
checkError(err)
defer f.Close()
f.Write(value)
f.Sync()
}
}