tailscale/tailscale · error

failed to generate egress policy binding: %w

Error message

failed to generate egress policy binding: %w

What it means

The ProxyGroupPolicy reconciler builds an egress network policy and then a binding object that attaches that policy to the proxy pods. This error wraps a failure in generatePolicyBinding for the egress policy (typically a Kubernetes API error on create/update), aborting the reconcile.

Source

Thrown at k8s-operator/reconciler/proxygrouppolicy/proxygrouppolicy.go:151

	ingress, err := r.generateIngressPolicy(ctx, namespace, ingressNames)
	if err != nil {
		return reconcile.Result{}, fmt.Errorf("failed to generate ingress policy: %w", err)
	}

	ingressBinding, err := r.generatePolicyBinding(ctx, namespace, ingress)
	if err != nil {
		return reconcile.Result{}, fmt.Errorf("failed to generate ingress policy binding: %w", err)
	}

	egress, err := r.generateEgressPolicy(ctx, namespace, egressNames)
	if err != nil {
		return reconcile.Result{}, fmt.Errorf("failed to generate egress policy: %w", err)
	}

	egressBinding, err := r.generatePolicyBinding(ctx, namespace, egress)
	if err != nil {
		return reconcile.Result{}, fmt.Errorf("failed to generate egress policy binding: %w", err)
	}

	objects := []client.Object{
		ingress,
		ingressBinding,
		egress,
		egressBinding,
	}

	for _, obj := range objects {
		// Attempt to perform an update first as we'll only create these once and continually update them, so it's
		// more likely that an update is needed instead of creation. If the resource does not exist, we'll
		// create it.
		err = r.Update(ctx, obj)
		switch {
		case apierrors.IsNotFound(err):
			if err = r.Create(ctx, obj); err != nil {
				return reconcile.Result{}, fmt.Errorf("failed to create %s %q: %w", obj.GetObjectKind().GroupVersionKind().Kind, obj.GetName(), err)

View on GitHub (pinned to 0fd2f14deb)

Solutions

1. Verify the ValidatingAdmissionPolicy referenced by the egress policy binding exists and is valid.
2. Fix the malformed parameters in the ProxyGroup spec that produce an invalid egress policy binding.
3. Check the wrapped error for the specific field that failed to render and correct it in the ProxyGroup resource.

When it happens

Trigger: Thrown at k8s-operator/reconciler/proxygrouppolicy/proxygrouppolicy.go:151 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of tailscale/tailscale@0fd2f14deb (2026-08-18). Data as JSON: /api/errors/91c1a120d120dcb8. Report an issue: GitHub.