kubernetes/kops · error

error listing InstanceGroupManagers: %v

Error message

error listing InstanceGroupManagers: %v

What it means

Fires in listInstanceGroupManagersAndInstances when listing GCP InstanceGroupManagers fails for a zone during cluster resource discovery — an API, credentials, or network failure enumerating MIGs, not their absence.

Source

Thrown at pkg/resources/gce/gce.go:216

	var resourceTrackers []*resources.Resource

	instanceTemplates := make(map[string]*compute.InstanceTemplate)
	{
		templates, err := d.findInstanceTemplates()
		if err != nil {
			return nil, err
		}
		for _, t := range templates {
			instanceTemplates[t.SelfLink] = t
		}
	}

	ctx := context.Background()

	for _, zoneName := range d.zones {
		is, err := c.Compute().InstanceGroupManagers().List(ctx, project, zoneName)
		if err != nil {
			return nil, fmt.Errorf("error listing InstanceGroupManagers: %v", err)
		}
		for i := range is {
			mig := is[i] // avoid closure-in-loop go-tcha
			instanceTemplate := instanceTemplates[mig.InstanceTemplate]
			if instanceTemplate == nil {
				klog.V(2).Infof("Ignoring MIG with unmanaged InstanceTemplate: %s", mig.InstanceTemplate)
				continue
			}

			resourceTracker := &resources.Resource{
				Name:    mig.Name,
				ID:      zoneName + "/" + mig.Name,
				Type:    typeInstanceGroupManager,
				Deleter: func(cloud fi.Cloud, r *resources.Resource) error { return gce.DeleteInstanceGroupManager(c, mig) },
				Obj:     mig,
			}

			resourceTracker.Blocks = append(resourceTracker.Blocks, typeInstanceTemplate+":"+instanceTemplate.Name)

View on GitHub (pinned to 4c8573c808)

Solutions

1. Check GCP credentials and compute.instanceGroupManagers.list permission
2. Retry after transient API errors
3. Verify the zones in the cluster spec are correct and enabled in the project

When it happens

Trigger: Thrown at pkg/resources/gce/gce.go:216 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/f3b54a03e390bdd7. Report an issue: GitHub.