kubernetes/kops · error

error waiting for NLB %q: %w

Error message

error waiting for NLB %q: %w

What it means

The LoadBalancerAvailable waiter did not observe the NLB become active within 15 minutes; creation is unusually slow or stalled (service-linked roles, capacity, misconfigured listeners), and the waiter error is wrapped with %w.

Source

Thrown at upup/pkg/fi/cloudup/awstasks/network_load_balancer.go:549

			lb := response.LoadBalancers[0]
			e.DNSName = lb.DNSName
			e.HostedZoneId = lb.CanonicalHostedZoneId
			e.VPC = &VPC{ID: lb.VpcId}
			loadBalancerArn = aws.ToString(lb.LoadBalancerArn)
			e.loadBalancerArn = loadBalancerArn
			e.revision = revision
		}

		if e.waitForLoadBalancerReady {
			klog.Infof("Waiting for load balancer %q to be created...", loadBalancerName)
			request := &elbv2.DescribeLoadBalancersInput{
				Names: []string{loadBalancerName},
			}

			err := elbv2.NewLoadBalancerAvailableWaiter(t.Cloud.ELBV2()).Wait(ctx, request, 15*time.Minute)
			if err != nil {
				return fmt.Errorf("error waiting for NLB %q: %w", loadBalancerName, err)
			}
		}

	} else {
		loadBalancerArn = a.loadBalancerArn

		if len(changes.IpAddressType) > 0 {
			request := &elbv2.SetIpAddressTypeInput{
				IpAddressType:   e.IpAddressType,
				LoadBalancerArn: &loadBalancerArn,
			}
			if _, err := t.Cloud.ELBV2().SetIpAddressType(ctx, request); err != nil {
				return fmt.Errorf("error setting the IP addresses type: %v", err)
			}
		}

		if changes.SubnetMappings != nil {
			actualSubnets := make(map[string]*string)

View on GitHub (pinned to 4c8573c808)

Solutions

1. Check the NLB's provisioning state and events in the AWS console
2. Re-run `kops update`/apply once the LB is active or after removing the blocker

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/awstasks/network_load_balancer.go:549 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/12066373500518a6. Report an issue: GitHub.