kubernetes/kops · error

failed to build cloud group for instance group %q: %w

Error message

failed to build cloud group for instance group %q: %w

What it means

Returned by GetCloudGroups when buildCloudGroup fails while converting a Scaleway server group into a kops CloudInstanceGroup — typically a failure creating a cloud instance entry or resolving a server IP for one of the servers in the group. The instance group name identifies which group's conversion aborted; the whole operation returns nil so partial results are discarded.

Source

Thrown at upup/pkg/fi/cloudup/scaleway/cloud.go:365

	nodeMap := cloudinstances.GetNodeMap(nodes, cluster)

	serverGroups, err := findServerGroups(s, cluster.Name)
	if err != nil {
		return nil, fmt.Errorf("failed to find server groups: %w", err)
	}

	for _, ig := range instancegroups {
		serverGroup, ok := serverGroups[ig.Name]
		if !ok {
			if warnUnmatched {
				klog.Warningf("Server group %q has no corresponding instance group", ig.Name)
			}
			continue
		}

		groups[ig.Name], err = buildCloudGroup(s, ig, serverGroup, nodeMap)
		if err != nil {
			return nil, fmt.Errorf("failed to build cloud group for instance group %q: %w", ig.Name, err)
		}
	}

	return groups, nil
}

func findServerGroups(s *scwCloudImplementation, clusterName string) (map[string][]*instance.Server, error) {
	servers, err := s.GetClusterServers(clusterName, nil)
	if err != nil {
		return nil, err
	}

	serverGroups := make(map[string][]*instance.Server)
	for _, server := range servers {
		igName := InstanceGroupNameFromTags(server.Tags)
		serverGroups[igName] = append(serverGroups[igName], server)
	}

View on GitHub (pinned to 4c8573c808)

Solutions

1. Check the wrapped error for the specific server that failed (ID or IP lookup)
2. Verify the servers in the named instance group are in a healthy state
3. Re-run the operation once the failing server is fixed or removed

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/scaleway/cloud.go:365 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/f73e9d0f6ef2d0bd. Report an issue: GitHub.