NTP server time configuration

Introduction

The ntp server is a synchronized time server.

open ntpd

1. Check the status (you can see that the status is: inactive, that is, the ntp service is not started)

[root@localhost]$ systemctl status ntpd
● ntpd.service - Network Time Service
   Loaded: loaded (/usr/lib/systemd/system/ntpd.service; disabled; vendor preset: disabled)
   Active: inactive (dead)

2. start

[root@localhost]# systemctl start ntpd

3. Set the boot to start

[root@node1 ~]# systemctl enable ntpd

View ntpd information

# ntptime
#ntpd -pn

test method

test address

test code

./client ip
./client -s
./client -c

forecast result

	Both are the same machine	two different machines
Both have ntp	Difference Tightens 0	linear
Both have no ntp
One with ntp, one without
Both have ntp, but synchronized to different ntp
Both have ntp, the first as the second both have ntp