kotsadm.go

package k8sutil

import (
	"github.com/pkg/errors"
	corev1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/client-go/kubernetes"
	"sigs.k8s.io/controller-runtime/pkg/client/config"
)

func FindKotsadm(namespace string) (string, error) {
	cfg, err := config.GetConfig()
	if err != nil {
		return "", errors.Wrap(err, "failed to get cluster config")
	}

	clientset, err := kubernetes.NewForConfig(cfg)
	if err != nil {
		return "", errors.Wrap(err, "failed to create kubernetes clientset")
	}

	pods, err := clientset.CoreV1().Pods(namespace).List(metav1.ListOptions{LabelSelector: "app=kotsadm-api"})
	if err != nil {
		return "", errors.Wrap(err, "failed to list pods")
	}

	for _, pod := range pods.Items {
		if pod.Status.Phase == corev1.PodRunning {
			return pod.Name, nil
		}
	}

	return "", errors.New("unable to find kotsadm pod")
}