kubernetes/kops · error

rendering server group: adding update tag to server %q (%s):

Error message

rendering server group: adding update tag to server %q (%s): %w

What it means

In RenderScw, UpdateServer failed while appending the 'kops.k8s.io/needs-update' tag to a server listed in actual.NeedsUpdate. The server was fetched fine but could not be modified — concurrent modification, permission, or API error; the server name and ID identify the machine.

Source

Thrown at upup/pkg/fi/cloudup/scalewaytasks/instance.go:204

	newInstanceCount := expected.Count
	if actual != nil {

		// Add "kops.k8s.io/needs-update" label to servers needing update
		for _, serverID := range actual.NeedsUpdate {
			server, err := instanceService.GetServer(&instance.GetServerRequest{
				Zone:     zone,
				ServerID: serverID,
			})
			if err != nil {
				return fmt.Errorf("rendering server group: listing existing servers: %w", err)
			}
			_, err = instanceService.UpdateServer(&instance.UpdateServerRequest{
				Zone:     zone,
				ServerID: serverID,
				Tags:     scw.StringsPtr(append(server.Server.Tags, scaleway.TagNeedsUpdate)),
			})
			if err != nil {
				return fmt.Errorf("rendering server group: adding update tag to server %q (%s): %w", server.Server.Name, serverID, err)
			}
		}

		if expected.Count == actual.Count {
			return nil
		}
		newInstanceCount = expected.Count - actual.Count

	}

	// If newInstanceCount > 0, we need to create new instances for this group
	for i := 0; i < newInstanceCount; i++ {
		// We create a unique name for each server
		uniqueName, err := uniqueName(t.Cloud, scaleway.ClusterNameFromTags(expected.Tags), fi.ValueOf(expected.Name))
		if err != nil {
			return fmt.Errorf("error rendering server group %s: computing unique name for server: %w", fi.ValueOf(expected.Name), err)
		}

View on GitHub (pinned to 4c8573c808)

Solutions

1. Check the wrapped error for the update failure reason
2. Avoid concurrent kOps/Scaleway operations mutating the same server
3. Re-run the apply to retry tagging

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/scalewaytasks/instance.go:204 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/b150600c0f956b4e. Report an issue: GitHub.