kubernetes/kops · error

error creating InstanceGroupManager: %v

Error message

error creating InstanceGroupManager: %v

What it means

Wrapped error from InstanceGroupManager.RenderGCE when the synchronous InstanceGroupManagers.Insert call fails for a new IGM (a == nil). GCE rejected the create — common causes are an invalid instance template reference, missing target pools, or quota.

Source

Thrown at upup/pkg/fi/cloudup/gcetasks/instancegroupmanager.go:130

	if policy := e.UpdatePolicy; policy != nil {
		i.UpdatePolicy = &compute.InstanceGroupManagerUpdatePolicy{
			MinimalAction: policy.MinimalAction,
			Type:          policy.Type,
		}
	}

	for _, targetPool := range e.TargetPools {
		i.TargetPools = append(i.TargetPools, targetPool.URL(t.Cloud))
	}

	if a == nil {
		if i.TargetSize == 0 {
			// TargetSize 0 will normally be omitted by the marshaling code; we need to force it
			i.ForceSendFields = append(i.ForceSendFields, "TargetSize")
		}
		op, err := t.Cloud.Compute().InstanceGroupManagers().Insert(t.Cloud.Project(), *e.Zone, i)
		if err != nil {
			return fmt.Errorf("error creating InstanceGroupManager: %v", err)
		}

		if err := t.Cloud.WaitForOp(op); err != nil {
			return fmt.Errorf("error creating InstanceGroupManager: %v", err)
		}
	} else {
		if changes.TargetPools != nil {
			op, err := t.Cloud.Compute().InstanceGroupManagers().SetTargetPools(t.Cloud.Project(), *e.Zone, i.Name, i.TargetPools)
			if err != nil {
				return fmt.Errorf("error updating TargetPools for InstanceGroupManager: %v", err)
			}

			if err := t.Cloud.WaitForOp(op); err != nil {
				return fmt.Errorf("error updating TargetPools for InstanceGroupManager: %v", err)
			}

			changes.TargetPools = nil
		}

View on GitHub (pinned to 4c8573c808)

Solutions

1. Inspect the wrapped error for the rejected field
2. Verify the instance template and target pools referenced by the IGM exist
3. Clear quota issues and re-run the apply

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/gcetasks/instancegroupmanager.go:130 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/bf3d79c58e7e904d. Report an issue: GitHub.