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CentOS7搭建时间服务器-chrony

CentOS7搭建时间服务器-chrony

作者: 橡皮24 | 来源:发表于2018-04-23 14:13 被阅读89次
    环境介绍:

    系统:centos7
    防火墙:关闭防火墙和selinux
    软件:chrony

    centos6我们一直用的ntp时间服务器,虽然到CentOS7上也可以装ntp。但是各种问题。所以建议centos7使用chrony同步工具。

    服务端配置:

    1.安装chrony软件
    [root@server ~]# yum install chrony -y
    
    2.修改配置文件
    [root@server ~]# vim /etc/chrony.conf
    
    server 0.centos.pool.ntp.org iburst     #可以修改ntp的服务器。最好用国内的。
    server 1.centos.pool.ntp.org iburst
    server 2.centos.pool.ntp.org iburst
    server 3.centos.pool.ntp.org iburst
    
    allow 172.19.150.0/24                   #打开允许同步的IP
    

    阿里ntp的服务器列表

    time1.aliyun.com
    time2.aliyun.com
    time3.aliyun.com
    time4.aliyun.com
    time5.aliyun.com
    time6.aliyun.com
    time7.aliyun.com

    3.启动、开机自启动、查看状态、查看同步源
    [root@server ~]# systemctl start chronyd
    
    [root@server ~]# systemctl enable chronyd
    
    [root@server ~]# systemctl status chronyd
    ● chronyd.service - NTP client/server
       Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; vendor preset: enabled)
       Active: active (running) since 一 2018-04-23 11:25:38 CST; 6min ago
    
    [root@server ~]# chronyc sources
    210 Number of sources = 1
    MS Name/IP address         Stratum Poll Reach LastRx Last sample               
    ===============================================================================
    ^* time4.aliyun.com              2   6    17    41    +87us[+1374us] +/-   28ms
    

    客户端配置:

    1. 安装chrony
    [root@client ~]# yum install chrony -y
    
    2. 修改配置文件
    [root@client ~]# vim /etc/chrony.conf 
    
    # 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            #注释此处
    #server 1.centos.pool.ntp.org iburst
    #server 2.centos.pool.ntp.org iburst
    #server 3.centos.pool.ntp.org iburst
    server 172.19.150.105 iburst                        #添加server
    
    3.启动、开机自启动、查看状态、查看同步源
    [root@client ~]# date
    Sat Sep  9 00:00:02 CST 2017
    
    [root@client ~]#  systemctl start chronyd
    
    [root@client ~]#  systemctl enable chronyd
    
    [root@client ~]#  systemctl status chronyd
    ● chronyd.service - NTP client/server
       Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; vendor preset: enabled)
       Active: active (running) since Sat 2017-09-09 00:00:11 CST; 7 months 13 days ago
         Docs: man:chronyd(8)
    
    [root@client ~]# date
    Sat Sep  9 00:00:13 CST 2017
    
    [root@client ~]# chronyc sources
    210 Number of sources = 1
    MS Name/IP address         Stratum Poll Reach LastRx Last sample               
    ===============================================================================
    ^* 172.19.150.105                3   6    17     3    +52us[ +107us] +/-   32ms
    ###最后一条有*号表示同步成功
    

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