k8s cluster token generator for kubeadm

k8s-cluster-token-generator.go

package main

import (
	"fmt"
	"math/rand"
)

const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"

func RandStringBytes(n int) string {
	b := make([]byte, n)
	for i := range b {
		b[i] = letterBytes[rand.Intn(len(letterBytes))]
	}
	return string(b)
}

func main() {
	fmt.Printf("%s.%s", RandStringBytes(6), RandStringBytes(16))
}