Linux下NTP服务器配置详细过程

目录

• 一、环境配置
• 1.NTP服务器
• 2.业务服务器
• 二、NTP服务器配置
• 1.查看chrony服务状态
• 2.启动chrony服务
• 3.关闭防火墙和selinux
• 4.配置NTP服务文件
• 5.重启服务
• 三、业务服务器配置
• 1.开启chrony服务
• 2.配置chrony服务文件
• 3.重启服务
• 四、测试业务服务器时间状态
• 1.查看时间同步状态
• 2.立即时间同步

一、环境配置

1.NTP服务器

NTP服务器版本：Red Hat Enterprise Linux release 8.0 (Ootpa)
NTP服务器IP：192.168.8.11/24
NTP服务器hostname:node1

2.业务服务器

NTP服务器版本：Red Hat Enterprise Linux release 8.0 (Ootpa)
NTP服务器IP：192.168.8.12/24
NTP服务器hostname:node2

二、NTP服务器配置

1.查看chrony服务状态

[root@node1 ~]# systemctl status chronyd
● chronyd.service - NTP client/server
   Loaded: loaded (/usr/lib/systemd/system/chronyd.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:chronyd(8)
           man:chrony.conf(5)
[root@node1 ~]# 

2.启动chrony服务

[root@node1 ~]# systemctl enable --now chronyd
Created symlink /etc/systemd/system/multi-user.target.wants/chronyd.service → /usr/lib/systemd/system/chronyd.service.

3.关闭防火墙和selinux

[root@node1 ~]# systemctl status firewalld.service 
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)
[root@node1 ~]# sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
[root@node1 ~]# setenforce 0
setenforce: SELinux is disabled
[root@node1 ~]# getenforce 
Disabled
[root@node1 ~]# 

4.配置NTP服务文件

[root@node1 ~]# vim /etc/chrony.conf 
[root@node1 ~]# cat /etc/chrony.conf |grep -Ei '(allow|local)'
# Allow the system clock to be stepped in the first three updates
# Allow NTP client access from local network.
#allow 192.168.0.0/16
allow 192.168.8.0/24
local stratum 10
[root@node1 ~]# 

5.重启服务

[root@node1 ~]# systemctl restart chronyd
[root@node1 ~]# 

三、业务服务器配置

1.开启chrony服务

[root@node2 ~]# systemctl enable --now chronyd
Created symlink /etc/systemd/system/multi-user.target.wants/chronyd.service → /usr/lib/systemd/system/chronyd.service.
[root@node2 ~]# 

2.配置chrony服务文件

[root@node2 ~]# vim /etc/chrony.conf 
[root@node2 ~]# cat /etc/chrony.conf |grep pool
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (Http://www.pool.ntp.org/join.html).
pool 192.168.8.11 iburst
[root@node2 ~]# 

3.重启服务

[root@node2 ~]# systemctl restart chronyd
[root@node2 ~]# 

四、测试业务服务器时间状态

1.查看时间同步状态

[root@node2 ~]# chronyc sources
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^? 192.168.8.12                  0   7     0     -     +0ns[   +0ns] +/-    0ns
[root@node2 ~]# 

2.立即时间同步

[root@node2 ~]# chronyc sources
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* 192.168.8.11                 10   6    17     2   +249ns[ +141us] +/-  100us
[root@node2 ~]# 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,
||    GiIGCKg  Log2(Polling interval) --.      |          |  yyyy = measured offset,
||                                \     |          |  zzzz = estimated error.
||                                 |    |           \
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* 192.168.8.11                 10   6    17     8   +249ns[ +141us] +/- 1103us
[root@node2 ~]# 

到此这篇关于Linux下NTP服务器配置详细过程的文章就介绍到这了,更多相关Linux NTP服务器配置内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们！