Linux Upgrade NTPD server-compile and install NTP-4.2.8P9 and configure NTPD server

1. system and software versions

1.1 System Version

CentOS6.5 x86_64

1.2 NTPD software version

Ntp-4.2.8p9.tar.gz

1.3

official: http://support.ntp.org/bin/view/Main/SoftwareDownloads

Reference Documentation: http://www.linuxfromscratch.org/blfs/view/svn/basicnet/ntp.html

2. Installation Prerequisites

2.1 Install dependent packages

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

2.2 backing up older versions of configuration files

[Email protected] ~]# cp-ar/etc/ntp/etc/ntp.bak[[email protected] ~]# cp/etc/ntp.conf/etc/ntp.conf.bak[[email Protec Ted] ~]# 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 Uninstalling the yum installed ntpd service

[email protected] ~]# Yum erase NTP ntpdate

3. Compile and install ntp-4.2.8p9

3.1 Creating the /var/lib/ntp directory

[Email protected] ~]# install-v-m710-o ntp-g ntp-d/var/lib/ntp

3.2 Compiling and installing 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] ~]# ntpntpd ntpdate ntpdc ntp-keygen ntpq ntptime ntptrace ntp-wait

4. Create a configuration file

[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. Configure ntp.conf

Add the following parameters to the /etc/ntp.conf configuration file

Server 127.127.1.0

Fudge 127.127.1.0 Stratum 10

Start the NTPD service

[[Email protected] ~]# service NTPD start

6. Client Configuration

[Email protected] ~]# DATESAT 8 08:08:13 CST 2015

/etc/ntp.conf Add a server-side IP address

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 u 3 64 1 0. 628 4279381 0.001

Wait a few minutesfor the ntpd client to automatically synchronize the service-side time

[[email protected] ~]# Datesat 8 08:11:10 CST 2015[[email protected] ~]# datethu Dec 15:28:41 CST 2016

Windows Client Configuration

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Linux Upgrade NTPD server-compile and install NTP-4.2.8P9 and configure NTPD server