kubernetes/kops · error

waiting for nat gateway deletion completion: %w

Error message

waiting for nat gateway deletion completion: %w

What it means

PollUntilDone failed while waiting for the NAT gateway deletion LRO; the delete was accepted but the operation failed (commonly because subnets still reference the NAT gateway).

Source

Thrown at upup/pkg/fi/cloudup/azure/natgateway.go:81

		if err != nil {
			var respErr *azcore.ResponseError
			if errors.As(err, &respErr) && respErr.ErrorCode == "ResourceGroupNotFound" {
				return nil, nil
			}
			return nil, fmt.Errorf("listing nat gateways: %w", err)
		}
		l = append(l, resp.Value...)
	}
	return l, nil
}

func (c *NatGatewaysClientImpl) Delete(ctx context.Context, resourceGroupName, natGatewayName string) error {
	future, err := c.c.BeginDelete(ctx, resourceGroupName, natGatewayName, nil)
	if err != nil {
		return fmt.Errorf("deleting nat gateway: %w", err)
	}
	if _, err := future.PollUntilDone(ctx, nil); err != nil {
		return fmt.Errorf("waiting for nat gateway deletion completion: %w", err)
	}
	return nil
}

func newNatGatewaysClientImpl(subscriptionID string, cred *azidentity.DefaultAzureCredential) (*NatGatewaysClientImpl, error) {
	c, err := network.NewNatGatewaysClient(subscriptionID, cred, nil)
	if err != nil {
		return nil, fmt.Errorf("creating nat gateways client: %w", err)
	}
	return &NatGatewaysClientImpl{
		c: c,
	}, nil
}

View on GitHub (pinned to 4c8573c808)

Solutions

1. Detach subnets using the NAT gateway and retry deletion
2. Inspect the wrapped error for the failure reason

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/azure/natgateway.go:81 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/f5a2b9a40f81c629. Report an issue: GitHub.