1. 系统与软件版本

1.1 系统版本

CentOS6.5 x86_64

1.2 ntpd软件版本

ntp-4.2.8p9.tar.gz

1.3 下载地址

官方下载地址：http://support.ntp.org/bin/view/Main/SoftwareDownloads

参考文档：http://www.linuxfromscratch.org/blfs/view/svn/basicnet/ntp.html

2.安装前提

2.1 安装依赖包

[[email protected] ~]# yum install gcc gcc-c++ openssl-devel libstdc++* libcap*

2.2 备份旧版本的配置文件[[email protected] ~]# cp -ar /etc/ntp /etc/ntp.bak

[[email protected] ~]# cp /etc/ntp.conf /etc/ntp.conf.bak

[[email protected] ~]# cp /etc/init.d/ntpd /etc/init.d/ntpd.bak

[[email protected] ~]# cp /etc/sysconfig/ntpd /etc/sysconfig/ntpd.bak

[[email protected] ~]# cp /etc/sysconfig/ntpdate /etc/sysconfig/ntpdate.bak

2.3 卸载yum安装的ntpd服务[[email protected] ~]# yum erase ntp ntpdate

3. 编译安装ntp-4.2.8p9

3.1 创建/var/lib/ntp目录[[email protected] ~]# install -v -m710 -o ntp -g ntp -d /var/lib/ntp

3.2 编译安装ntpd[[email protected] ntp-4.2.8p9]# ./configure --prefix=/usr --bindir=/usr/sbin --sysconfdir=/etc --enable-linuxcaps --with-lineeditlibs=readline --docdir=/usr/share/doc/ntp-4.2.8p9 --enable-all-clocks --enable-parse-clocks --enable-clockctl

make && make install

[[email protected] ~]# ntp

ntpd        ntpdate     ntpdc       ntp-keygen  ntpq        ntptime     ntptrace    ntp-wait

4.创建配置文件[[email protected] ~]# cp /etc/init.d/ntpd.bak /etc/init.d/ntpd

[[email protected] ~]# cp /etc/sysconfig/ntpd.bak /etc/sysconfig/ntpd

[[email protected] ~]# cp /etc/sysconfig/ntpdate.bak /etc/sysconfig/ntpdate

[[email protected] ~]# mv /etc/ntp.bak /etc/ntp

[[email protected] ~]# cp /etc/ntp.conf.bak /etc/ntp.conf

5.配置ntp.conf

在/etc/ntp.conf配置文件添加以下参数

server 127.127.1.0

fudge 127.127.1.0 stratum 10

启动ntpd服务

[[email protected] ~]# service ntpd start

6. 客户端配置[[email protected] ~]# date

Sat Aug  8 08:08:13 CST 2015

/etc/ntp.conf添加服务端IP地址

server 10.17.83.106

[[email protected] ~]# ntpq -p

remote           refid      st t when poll reach   delay   offset  jitter

==============================================================================

10.17.83.106    10.17.82.25     12 u    3   64    1    0.628  4279381   0.001

等待几分钟，ntpd客户端自动去同步服务端的时间[[email protected] ~]# date

Sat Aug  8 08:11:10 CST 2015

[[email protected] ~]# date

Thu Dec 15 15:28:41 CST 2016

Windows客户端配置

原文：http://7424593.blog.51cto.com/7414593/1883058