Chrony时间服务器

淩亂°似流年 2022-01-13 00:19 235阅读 0赞

# 简介 #

chrony是网络时间协议（NTP）的通用实现,chrony中包含两个程序，chronyd是一个可以在启动时启动的守护程序，chronyc是一个命令行界面程序。

**配置文件：chrony.conf**  
server：时间服务器地址；  
allow ：允许客户端；  
deny ：拒绝客户端；；  
local stratum 10：即使自己未能同步网络时间，也允许授时给其它客户端；

# 环境 #

CentOS Linux release 7.6  
server： 10.120.123.8  
client ： 10.120.123.9

# 安装Chrony #

yum install -y chrony

# server端(10.120.123.8) #

**配置文件**

vim/etc/chrony.conf
    allow 10.120.123.0/24

**启动服务**

systemctl start chronyd.service
    systemctl enable chronyd.service

**查看端口**

netstat -nlup | grep chronyd 
    udp        0      0 0.0.0.0:123             0.0.0.0:*                           9091/chronyd        
    udp        0      0 127.0.0.1:323         0.0.0.0:*                           9091/chronyd        
    udp6      0      0 ::1:323                     :::*                                   9091/chronyd

# client端(10.120.123.9) #

**配置文件**

vim/etc/chrony.conf
    server 10.120.123.8 iburst
    #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

**启动服务**

systemctl start chronyd.service
    systemctl enable chronyd.service

# 查看同步状态 #

1,chronyc sourcestats

210 Number of sources = 1
    Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
    ==============================================================================
    10.120.123.8                0   0     0     +0.000   2000.000     +0ns  4000ms

2.chronyc sources -v

210 Number of sources = 1
    
      .-- Source mode  '^' = server, '=' = peer, '#' = local clock.
     / .- Source state '*' = current synced, '+' = combined , '-' = not combined,
    | /   '?' = unreachable, 'x' = time may be in error, '~' = time too variable.
    ||                                                 .- xxxx [ yyyy ] +/- zzzz
    ||      Reachability register (octal) -.           |  xxxx = adjusted offset,
    ||      Log2(Polling interval) --.      |          |  yyyy = measured offset,
    ||                                \     |          |  zzzz = estimated error.
    ||                                 |    |           \
    MS Name/IP address         Stratum Poll Reach LastRx Last sample               
    ===============================================================================

转载于:https://blog.51cto.com/14074807/2389699