How do I authenticate to clusters from Go code?

Authenticating to clusters in Go can be accomplished through various methods depending on the type of cluster you are connecting to. Below is an example of how to authenticate to a Kubernetes cluster using a kubeconfig file.

package main import ( "context" "fmt" "os" "k8s.io/client-go/kubernetes" "k8s.io/client-go/tools/clientcmd" ) func main() { // Load kubeconfig file kubeconfig := os.Getenv("KUBECONFIG") if kubeconfig == "" { kubeconfig = filepath.Join(homeDir(), ".kube", "config") } config, err := clientcmd.BuildConfigFromFlags("", kubeconfig) if err != nil { fmt.Printf("Error building kubeconfig: %s\n", err.Error()) return } // Create clientset clientset, err := kubernetes.NewForConfig(config) if err != nil { fmt.Printf("Error creating Kubernetes client: %s\n", err.Error()) return } // Use clientset to interact with the cluster fmt.Println("Authentication successful!") } func homeDir() string { if h := os.Getenv("HOME"); h != "" { return h } return os.Getenv("USERPROFILE") // Windows }

Go Kubernetes Authentication Client-go

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