·NTP伺服器配置搭建詳情，ntp伺服器配置搭建

·NTP伺服器配置搭建詳情，ntp伺服器配置搭建
一·NTP伺服器搭建

1)安裝NTP服務

[root@localhost ~]# yum -y install ntp[root@localhost ~]# vim /etc/ntp.conf 

restrict 172.25.0.0 mask 255.255.255.0 nomodify notrap          //添加接受的位址範圍# Use public servers from the pool.ntp.org project.# Please consider joining the pool (https://www.pool.ntp.org/join.html).#server 0.rhel.pool.ntp.org iburst#server 1.rhel.pool.ntp.org iburst#server 2.rhel.pool.ntp.org iburst#server 3.rhel.pool.ntp.org iburstserver s1a.time.edu.cn iburst                                   //中國郵電大學NTP伺服器

[root@localhost ~]# systemctl start ntpd[root@localhost ~]# systemctl enable ntpd

2）防火牆開啟連接埠，NTP預設連接埠號碼UDP123

[root@localhost ~]# firewall-cmd --add-service=ntp --permanent         //永久生效允許存取ntp服務[root@localhost ~]# firewall-cmd --reload                      //重讀防火牆

3）查看同步

[root@localhost ~]# ntpq -p     remote           refid      st t when poll reach   delay   offset  jitter==============================================================================*10.112.202.in-a 202.118.1.46     2 u    9   64    1   93.632    9.389   5.115

4）配置ntp用戶端

[root@localhost ~]# yum -y install ntpdate                     //安裝用戶端軟體[root@localhost ~]# ntpdate s1a.time.edu.cn                        //指定伺服器網域名稱[root@localhost ~]# systemctl restart ntpdate                      //重啟服務