Update your kubeconfig with all EKS clusters

eks-kubeconfig.go

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"os/exec"
)

type EKSClusters struct {
	Clusters []string
}

func main() {
	cmd := exec.Command("aws", "eks", "list-clusters")
	stdout, err := cmd.CombinedOutput()
	if err != nil {
		fmt.Println(string(stdout))
		log.Fatal(err)
	}
	var clusterlist EKSClusters
	json.Unmarshal(stdout, &clusterlist)
	for _, clustername := range clusterlist.Clusters {
		cmd := exec.Command("aws", "eks", "update-kubeconfig", "--name", clustername)
		stdout, err := cmd.CombinedOutput()
		if err != nil {
			fmt.Println(string(stdout))
			log.Fatal(err)
		}
		fmt.Println(string(stdout))
	}
}

/* When you build the executable, try to make it as small as possible, you don't need ~3mb executable:

go build -ldflags="-s -w" eks-kubeconfig.go

upx --brute eks-kubeconfig
*/