How to use kubernetes go-client on amazon eks service? - go

Question

I've been looking for documentation for a long time and still couldn't find any clear connection procedure.
I came up with this code sample :
package aws
import (
"fmt"
"net/http"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/eks"
"github.com/joho/godotenv"
)
func Connect() {
godotenv.Load(".env")
session := session.Must(session.NewSession())
svc := eks.New(session)
clusters, err := svc.ListClusters(&eks.ListClustersInput{})
if err != nil {
fmt.Println(err.Error())
}
fmt.Println(clusters)
}
i mean, this still returns a 403 forbidden error because of env variable mess, but the code is valid i guess. My question is, having this connection established : how to convert this svc variable into the *kubernetes.Clientset one from the go driver ?

Answer 1

Have you had a look at the client-go example on how to authenticate in-cluster?
Code that authenticate to the Kubernetes API typically start like this:
// creates the in-cluster config
config, err := rest.InClusterConfig()
if err != nil {
panic(err.Error())
}
// creates the clientset
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
panic(err.Error())
}

Answer 2

I use the following code to automatically detect where its running from local machine or any kubernetes cluster.
var config *rest.Config
if _, err := os.Stat("/var/run/secrets/kubernetes.io/serviceaccount/token"); err == nil {
config, err = rest.InClusterConfig()
if err != nil {
log.Fatal(err)
}
} else if os.IsNotExist(err) {
config, err = clientcmd.BuildConfigFromFlags("", *kubeConfig)
if err != nil {
log.Fatal("No serviceaccount mounted or -kubeconfig flag passed or .kube/config file \n " ,err)
}
}
// Create an rest client not targeting specific API version
clientSet, err := kubernetes.NewForConfig(config)
if err != nil {
log.Fatal(err)
}