centos服务器搭建ntp服务

zhaorong · 发表于 linux教程 2017-3-7 16:24:37


	1、安装前的准备查看系统上面设置的时区 [ root@linux-node1 ~]# cat /etc/sysconfig/clock ZONE="Asia/Shanghai" 思想：怎么修改linux主机上面的解决办法：修改时区 vim /etc/sysconfig/clock ZONE="Asia/Shanghai" UTC=true ARC=false 覆盖系统时间文件 cp -a /usr/share/zoneinfo/Asia/Shanghai /etc/localtime#2、开始安装ntp服务器采用yum/rpm方式安装 yum install ntp -y 查看安装是否成功 [root@linux-node1 ~]# rpm -qa ntp ntp-4.2.6p5-10.el6.centos.1.x86_64 复制代码 3、开始配置ntp服务器 vim /etc/ntp.conf 下面为我修改的/etc/ntp.conf配置文件，下面为大家解释一部分参数的意思： # Permit time synchronization with our time source, but do not # permit the source to query or modify the service on this system. restrict default kod nomodify notrap nopeer noquery 复制代码 #默认是拒绝所有的ntp连线 restrict -6 default kod nomodify notrap nopeer noquery #拒绝IP-V6的ntp连线复制代码 # Permit all access over the loopback interface. This could # be tightened as well, but to do so would effect some of # the administrative functions.[/code [code]restrict 127.0.0.1 #这里也可以允许单个ip进行对时服务 restrict -6 ::1 复制代码 # Hosts on local network are less restricted. restrict 192.168.17.0 mask 255.255.255.0 nomodify notrap #允许哪些网段可以使用这个ntp对时服务 # Use public servers from the pool.ntp.org project. # Please consider joining the pool (http://www.pool.ntp.org/join.html). #server 0.centos.pool.ntp.org iburst #server 1.centos.pool.ntp.org iburst #server 2.centos.pool.ntp.org iburst #server 3.centos.pool.ntp.org iburst [code]server 2.cn.pool.ntp.org #上层ntp服务器 server time.nist.gov prefer server 1.cn.pool.ntp.org 复制代码 [/code] 4、时间同步服务器上面的操作 [ root@linux-node1 ~]# /etc/init.d/ntpd restart Shutting down ntpd: [ OK ] Starting ntpd: [ OK ] [root@linux-node1 ~]# ntpq -p remote refid st t when poll reach delay offset jitter 复制代码 ============================================================================== +panel.gerardope 116.49.102.213 2 u 24 64 1 211.688 -17.119 0.122 time-d.nist.gov .ACTS. 1 u 22 64 1 348.603 3.607 0.122 static-5-103-12 .GPS. 1 u 22 64 1 311.951 -16.711 0.122 复制代码* 解释： *号的意思：表示正在使用的上层NTP +号的意思：表示已经连线成功的，可提供替补的时间同步服务器

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centos服务器搭建ntp服务

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