嵌入式ntp服务器的移植

一.交叉编译

1.官网下载http://www.ntp.org/点击download选项页

我的版本是ntp-4.2.6p5.tar.gz

2.解压

tar -zxvf ntp-4.2.6p5.tar.gz

3.进入解压目录配置

./configure --host=arm-linux CC=arm-none-linux-gnueabi-gcc

或者指定安装路径

./configure --host=arm-linux CC=arm-none-linux-gnueabi-gcc --prefix=/home/m/3rd/tmp

4.make和[make install]

5.生成

/bin(ntpd,ntpdate,ntpdc,ntp-keygen,ntpd,ntptime,sntp,tickadj...)

/lib

/sbin

/share (man)

目录拷贝到目标文件系统

二.配置测试ntp服务器

拷贝host系统/etc目录下的ntp.conf文件到目标系统/etc下,没有的话就先安装ntp服务就会有了(ubuntu 下sudo apt-get install ntp)

或者拷贝我的文件内容

# /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





# You do need to talk to an NTP server or two (or three).

server ntp.ubuntu.com





# Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for

# details.  The web page <http://support.ntp.org/bin/view/Support/AccessRestrictions>

# might also be helpful.

#

# Note that "restrict" applies to both servers and clients, so a configuration

# that might be intended to block requests from certain clients could also end

# up blocking replies from your own upstream servers.



# By default, exchange time with everybody, but don't allow configuration.

restrict -4 default kod notrap nomodify nopeer noquery

restrict -6 default kod notrap nomodify nopeer noquery



# Local users may interrogate the ntp server more closely.

restrict 127.0.0.1

restrict ::1



# Clients from this (example!) subnet have unlimited access, but only if

# cryptographically authenticated.

#restrict 192.168.123.0 mask 255.255.255.0 notrust





# If you want to provide time to your local subnet, change the next line.

# (Again, the address is an example only.)

#broadcast 192.168.123.255



# If you want to listen to time broadcasts on your local subnet, de-comment the

# next lines.  Please do this only if you trust everybody on the network!

#disable auth

#broadcastclient

测试

date 命令查看时间日期,

date 11111111修改时间

Mon Nov 11 11:11:00 UTC 2013

运行ntpdate 64.4.10.33更新时间 ip是ntp服务器的地址

11 Sep 05:13:21 ntpdate[1851]: adjust time server 64.4.10.33 offset -0.037363 sec

再次运行date

Wed Sep 11 04:49:01 UTC 2013

ntp时间服务器可以查看windows的时间设置

ping 一下ping time.windows.com

正在 Ping time.microsoft.akadns.net [64.4.10.33] 具有 32 字节的数据:

试了一下 直接ntpdate time.windows.com也行的

(外网要能连通 设置DNS

vi /etc/resolv.conf添加

nameserver 【dns地址】

)