Linux build local NTP time server

Linux Build local time server

Pre-Experiment Description:

Lab Machine: VMware 10

Experimental system: CentOS6.6

Experimental purpose: To make all CentOS systems on VMware the same time, convenient to do cluster experiment;

#

1, compile and install NTP (on the machine you want to do time server) I this machine IP: 172.16.249.135

# Install the GCC compiler

Yum Install Gcc-y

# Download Packages

wget http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-4.2.6p4.tar.gz

# Unzip Package

Tar XF ntp-4.2.6p4.tar.gz

# Enter the extracted directory to prepare the installation

CD NTP-4.2.6P4

# Detect compiled installation environment

./configure--PREFIX=/USR/LOCAL/NTP--enable-all-clocks--enable-parse-clocks

# installation

Make && make install

2. Configure the NTP server

# Modify the NFP configuration file

Vim/etc/ntp.conf

Comment on the line,

# Restrict default Kod nomodify notrap nopeer noquery

Restrict default nomodify

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3. Start the NTP service;

#/usr/local/ntp/bin/ntpd-c/etc/ntp.conf-p/tmp/ntpd.pid

And then...

And then you wait, like, 15 minutes or so,

Use commands on other virtual machines after a period of time

# ntpdate 172.16.249.135 can synchronize time;

1, where the IP is the IP as the time server

2, recommended more than 20 minutes in sync, otherwise it will prompt "No server suitable for synchronization found" this error;

#####################

In some cases, you may wait 15 minutes after the update, or will prompt the above error;

At this point, you add the following two lines to the/etc/ntp.conf file, casually find a place to add in, waiting for 5 minutes; OK;

Server 127.127.1.0

Fudge 127.127.1.0 Stratum 8

Linux build local NTP time server