kubernetes/kops · error

error finding launch template or configuration for autoscali

Error message

error finding launch template or configuration for autoscaling group: %s

What it means

findAutoscalingGroupLaunchConfiguration found neither a LaunchConfigurationName nor a usable LaunchTemplateSpecification (direct or via MixedInstancesPolicy) on the ASG. This is a guard error: the ASG named by %s has no launch configuration or launch template attached, which is an invalid/foreign ASG state.

Source

Thrown at upup/pkg/fi/cloudup/awsup/aws_cloud.go:935

	}
	return true
}

// findAutoscalingGroupLaunchConfiguration is responsible for finding the launch - which could be a launchconfiguration, a template or a mixed instance policy template
func findAutoscalingGroupLaunchConfiguration(ctx context.Context, c AWSCloud, g *autoscalingtypes.AutoScalingGroup) (string, error) {
	name := aws.ToString(g.LaunchConfigurationName)
	if name != "" {
		return name, nil
	}

	// @check the launch template then
	var launchTemplate *autoscalingtypes.LaunchTemplateSpecification
	if g.LaunchTemplate != nil {
		launchTemplate = g.LaunchTemplate
	} else if g.MixedInstancesPolicy != nil && g.MixedInstancesPolicy.LaunchTemplate != nil && g.MixedInstancesPolicy.LaunchTemplate.LaunchTemplateSpecification != nil {
		launchTemplate = g.MixedInstancesPolicy.LaunchTemplate.LaunchTemplateSpecification
	} else {
		return "", fmt.Errorf("error finding launch template or configuration for autoscaling group: %s", aws.ToString(g.AutoScalingGroupName))
	}

	id := aws.ToString(launchTemplate.LaunchTemplateId)
	if id == "" {
		return "", fmt.Errorf("error finding launch template ID for autoscaling group: %s", aws.ToString(g.AutoScalingGroupName))
	}

	version := aws.ToString(launchTemplate.Version)
	// Correctly Handle Default and Latest Versions
	klog.V(4).Infof("Launch Template Version Specified By ASG: %v", version)
	if version == "" || version == "$Default" || version == "$Latest" {
		input := &ec2.DescribeLaunchTemplatesInput{
			LaunchTemplateIds: []string{id},
		}
		output, err := c.EC2().DescribeLaunchTemplates(ctx, input)
		if err != nil {
			return "", fmt.Errorf("error describing launch templates: %q", err)
		}

View on GitHub (pinned to 4c8573c808)

Solutions

1. Inspect the named ASG in the AWS console and attach a valid launch template or launch configuration
2. If the ASG was created outside kops or is leftover, delete it or tag it so kops no longer matches it to the cluster
3. Recreate the ASG through kops (rolling-update) so it is provisioned with a proper launch template

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/awsup/aws_cloud.go:935 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/281d1305829683e2. Report an issue: GitHub.