diff --git a/Auto-Builder-Server.md b/Auto-Builder-Server.md
index 6de51e2..7561ac2 100644
--- a/Auto-Builder-Server.md
+++ b/Auto-Builder-Server.md
@@ -502,3 +502,90 @@ Auto-builder@Auto-builder:/$ sudo  -u Auto-builder mail   -s "test1" sxxu@linx-i
 ## 5 测试调试
 
 基本配置如上所述。之后可进行git库更新测试调试。
+
+## 6 后期使用添加补充
+
+### 6.1 添加nbd模块加载
+
+经测试调试，发现安装虚拟机会出错。原因是未加载nbd设备。导致配置已经初始化的kvm_install.img失败。
+
+修改250服务器的rc.local，添加开机启动加载nbd设备，如下：
+
+```
+root@Auto-builder:~# cat /etc/modules 
+# /etc/modules: kernel modules to load at boot time.
+#
+# This file contains the names of kernel modules that should be loaded
+# at boot time, one per line. Lines beginning with "#" are ignored.
+# Parameters can be specified after the module name.
+
+loop
+linx_sec
+linx_sysinfo
+
+nbd max_part=8
+
+```
+
+### 6.2 出盘发布时间变化
+
+多次出盘时间定在09:00左右。查看发现，编译虚拟机的时间不对。配置编译虚拟机的对时任务，配置250服务器的ntp对时服务。
+
+虚拟机对时任务配置：（添加对时脚本，配置定时任务）
+
+```
+localhost:/var/log # ls /usr/sbin/update_time.sh  -l
+-rwxr-xr-x 1 sysadmin sysadmin 181  1月 29 11:53 /usr/sbin/update_time.sh
+localhost:/var/log # cat /usr/sbin/update_time.sh 
+#!/bin/bash
+NTPSERVER_A='172.16.0.250'
+NTPSERVER_B=''
+NTPDATE='/usr/sbin/ntpdate'
+${NTPDATE} ${NTPSERVER_A}
+#${NTPDATE} ${NTPSERVER_A} || ${NTPDATE} ${NTPSERVER_B}
+/sbin/hwclock -w
+localhost:/var/log # cat /etc/crontab
+#
+# Vixie cron /etc/crontab
+#
+
+# globals
+SHELL=/bin/bash
+PATH=/bin:/sbin:/usr/bin:/usr/sbin
+MAILTO=""
+
+0 20 * * * 	sysadmin /usr/sbin/runjobs /etc/cron/daily
+5 20 * * mon  	sysadmin /usr/sbin/runjobs /etc/cron/weekly
+10 20 1 * * 	sysadmin /usr/sbin/runjobs /etc/cron/monthly
+
+*/1  * * * *   sysadmin    /usr/sbin/update_time.sh
+
+```
+
+服务器ntp对时服务配置：（ntp服务默认是开机启动）
+
+```
+root@Auto-builder:~# cat /etc/ntp.conf 
+# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help
+
+driftfile /var/lib/ntp/ntp.drift
+
+
+# Enable this if you want statistics to be logged.
+#statsdir /var/log/ntpstats/
+
+statistics loopstats peerstats clockstats
+filegen loopstats file loopstats type day enable
+filegen peerstats file peerstats type day enable
+filegen clockstats file clockstats type day enable
+
+server 172.31.255.8     iburst
+server 172.31.255.9     iburst
+server 172.17.0.240     iburst noselect
+server 172.17.0.239     iburst noselect
+server 172.17.0.235     iburst noselect
+
+```
+
+
+