Ubuntu16搭建NTP时间服务器

服务端配置：
1、安装chrony软件

root@B-OPS-75-1:~# apt install chrony –y

2、修改配置文件

#pool 2.debian.pool.ntp.org offline iburst    #注释此行

server time1.aliyun.com iburst        #并添加时间服务器，此处选择的是阿里的时间服务器
server time2.aliyun.com iburst
server time3.aliyun.com iburst
server time4.aliyun.com iburst
server time5.aliyun.com iburst
server time6.aliyun.com iburst
server time7.aliyun.com iburst
allow 10.2.75.0/16                 #打开允许同步的IP段

3、启动，查看状态，查看同步源

root@B-OPS-75-1:~# systemctl restart chrony
root@B-OPS-75-1:~# systemctl status chrony
● chrony.service - LSB: Controls chronyd NTP time daemon
   Loaded: loaded (/etc/init.d/chrony; bad; vendor preset: enabled)
   Active: active (exited) since Mon 2018-10-08 21:59:18 EDT; 1min 57s ago
     Docs: man:systemd-sysv-generator(8)

Oct 08 21:59:18 B-OPS-75-1 systemd[1]: Starting LSB: Controls chronyd NTP time daemon...
Oct 08 21:59:18 B-OPS-75-1 chrony[5172]: Invalid command at line 20 in file /etc/chrony/chrony.conf
Oct 08 21:59:18 B-OPS-75-1 systemd[1]: Started LSB: Controls chronyd NTP time daemon.
root@B-OPS-75-1:~# chronyc sources
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^* 203.107.6.88                  2   6     7     0  +8787ns[  -53us] +/-   23ms
root@B-OPS-75-1:~# vim /etc/chrony/chrony.conf
root@B-OPS-75-1:~# chronyc sources
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^* 203.107.6.88                  2   6   377    11   -227us[ -730us] +/-   19ms

客户端配置：
1、安装服务

root@B-OPS-75-2:~# apt install chrony –y

2、修改配置文件

root@B-OPS-75-2:~# vim /etc/chrony/chrony.conf

#pool 2.debian.pool.ntp.org offline iburst   #注释此行
server 10.2.75.1 iburst     #添加同步源

3、启动服务并查看同步源

root@B-OPS-75-2:~# service chrony restart
root@B-OPS-75-2:~# chronyc sources
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^* 10.2.75.1                     3   6    37    32   +730ns[ +811us] +/-   27ms