kubernetes/kops · error

failed validating input specs: %w

Error message

failed validating input specs: %w

What it means

The input InstanceGroup failed kops validation before defaulting is applied. The aggregate error lists the invalid fields (name, role, etc.); population is aborted so no defaults are computed for a broken spec.

Source

Thrown at upup/pkg/fi/cloudup/populate_instancegroup_spec.go:83

// TODO: this hardcoded list can be replaced with DescribeInstanceTypes' DedicatedHostsSupported field
var awsDedicatedInstanceExceptions = map[string]bool{
	"t2.nano":   true,
	"t2.micro":  true,
	"t2.small":  true,
	"t2.medium": true,
	"t2.large":  true,
	"t2.xlarge": true,
}

// PopulateInstanceGroupSpec sets default values in the InstanceGroup
func PopulateInstanceGroupSpec(cluster *kops.Cluster, input *kops.InstanceGroup, cloud fi.Cloud, channel *kops.Channel) (*kops.InstanceGroup, error) {
	klog.V(2).Infof("Populating instance group spec for %q", input.GetName())

	var err error
	// TODO: Pass in `cloud` to shift validation to ValidateInstanceGroup
	err = validation.ValidateInstanceGroup(input, nil, false).ToAggregate()
	if err != nil {
		return nil, fmt.Errorf("failed validating input specs: %w", err)
	}

	ig := &kops.InstanceGroup{}
	reflectutils.JSONMergeStruct(ig, input)

	igSpec := &ig.Spec

	// TODO: Clean up
	if ig.IsControlPlane() {
		if ig.Spec.MachineType == "" {
			ig.Spec.MachineType, err = defaultMachineType(cloud, cluster, ig)
			if err != nil {
				return nil, fmt.Errorf("assigning default machine type for control-plane nodes: %v", err)
			}

		}
		if ig.Spec.MinSize == nil {
			ig.Spec.MinSize = new(int32(1))

View on GitHub (pinned to 4c8573c808)

Solutions

1. Read each error in the aggregate validation result
2. Fix the named fields in the instance group spec
3. Retry the operation

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/populate_instancegroup_spec.go:83 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/da438f6535294278. Report an issue: GitHub.