kubernetes/kops · error

building corev1 client: %w

Error message

building corev1 client: %w

What it means

NewGCEIPAMReconciler builds a typed corev1 client from the controller-runtime manager's REST config; this wraps that construction failing. The manager config itself was already established, so this is essentially an internal client-go setup error (e.g. invalid auth fields).

Source

Thrown at cmd/kops-controller/controllers/gceipam.go:46

	apierrors "k8s.io/apimachinery/pkg/api/errors"
	corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
	"k8s.io/klog/v2"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/manager"
)

// NewGCEIPAMReconciler is the constructor for a GCEIPAMReconciler
func NewGCEIPAMReconciler(mgr manager.Manager) (*GCEIPAMReconciler, error) {
	klog.Info("starting gce ipam controller")
	r := &GCEIPAMReconciler{
		client: mgr.GetClient(),
		log:    ctrl.Log.WithName("controllers").WithName("gce-ipam"),
	}

	coreClient, err := corev1client.NewForConfig(mgr.GetConfig())
	if err != nil {
		return nil, fmt.Errorf("building corev1 client: %w", err)
	}
	r.coreV1Client = coreClient

	gceClient, err := compute.NewService(context.Background())
	if err != nil {
		return nil, fmt.Errorf("building compute API client: %w", err)
	}
	r.gceClient = gceClient

	return r, nil
}

// GCEIPAMReconciler observes Node objects, assigning their `PodCIDRs` from the instance's `ExternalIpv6`.
type GCEIPAMReconciler struct {
	// client is the controller-runtime client
	client client.Client

	// log is a logr

View on GitHub (pinned to 4c8573c808)

Solutions

1. Inspect the wrapped client-go error for the invalid config field
2. Verify the controller manager's REST config/credentials are valid
3. Restart kops-controller after fixing credential or kubeconfig issues

When it happens

Trigger: Thrown at cmd/kops-controller/controllers/gceipam.go:46 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of kubernetes/kops@4c8573c808 (2026-09-05). Data as JSON: /api/errors/59c0b5d3227d3465. Report an issue: GitHub.