return hostname, nil
	}
	truncated := hostname[:hostnameMaxLen]
	klog.ErrorS(nil, "Hostname for pod was too long, truncated it", "podName", podName, "hostnameMaxLen", hostnameMaxLen, "truncatedHostname", truncated)
	// hostname should not end with '-' or '.'
	truncated = strings.TrimRight(truncated, "-.")
	if len(truncated) == 0 {
		// This should never happen.