ubuntu16.02 ntp时钟同步服务设置

发布日期：2022-02-07 06:39:39 浏览次数：7 分类：技术文章

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1. 首先安装ntp服务（ubuntu 16.02）

在linux的root用户下执行以下命令

yum install ntp –y

（如果是ubuntu系统则执行 apt install yum ntp）

2. 修改ntp配置文件（server）

我们需要在linux集群中找到一台作为ntp服务器的server，其他机器则为ntp的client，因此，在server服务器上修改一下配置文件

执行 vim/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

# Specify one or more NTP servers.

# Use servers from the NTP Pool Project. Approved by Ubuntu Technical Board

# on 2011-02-08 (LP: #104525). See http://www.pool.ntp.org/join.html for

# more information.

#linux自带的时间同步，需要注释掉

#pool 0.ubuntu.pool.ntp.org iburst

#pool 1.ubuntu.pool.ntp.org iburst

#pool 2.ubuntu.pool.ntp.org iburst

#pool 3.ubuntu.pool.ntp.org iburst

# Use Ubuntu's ntp server as a fallback.

#pool 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 limited

restrict -6 default kod notrap nomodify nopeer noquery limited

# Local users may interrogate the ntp server more closely.

restrict 127.0.0.1

restrict ::1

#因为是内网，所以用本地时间做为服务器时间，注意这里不是127.0.0.1

server 127.127.1.0

fudge 127.127.1.0 stratum 8

#开放192.168.8.0 整个网段，即在这个网段的所有机器都可以使用 214 作为时间同步服务端

restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap

# Needed for adding pool entries

restrict source notrap nomodify noquery

# 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

#Changes recquired to use pps synchonisation as explained in documentation:

#http://www.ntp.org/ntpfaq/NTP-s-config-adv.htm#AEN3918

#server 127.127.8.1 mode 135 prefer # Meinberg GPS167 with PPS

#fudge 127.127.8.1 time1 0.0042 # relative to PPS for my hardware

#server 127.127.22.1 # ATOM(PPS)

#fudge 127.127.22.1 flag3 1 # enable PPS API

设置完成退出保存，然后重启ntp服务

执行 service ntp restart

3. 修改ntp配置文件（client）

同样的server端已经配置好了，client的配置相对简单

执行 vim /etc/ntp.conf