public static String getServerId() {
        try {
            return InetAddress.getLocalHost().getHostName();
        } catch (UnknownHostException e) {
            return "unknown";
        }
    }
ID of the server. Can be host name, IP address or any other meaningful identifier

@return canonical host name resolved for the instance, "unknown" if resolution fails
core/src/main/java/com/netflix/conductor/core/utils/Utils.java