Shulou(Shulou.com)06/03 Report--

Install ntpd

yum install ntpdate

timedatetl View time Various states:

[root@localhost network-scripts]# timedatectl

Local time: Sun 2019-12-29 23:45:49 EST

Universal time: Mon 2019-12-30 04:45:49 UTC

RTC time: Mon 2019-12-30 13:49:38

Time zone: America/New_York (EST, -0500)

NTP enabled: no

NTP synchronized: no

RTC in local TZ: no

DST active: no

Last DST change: DST ended at

Sun 2019-11-03 01:59:59 EDT

Sun 2019-11-03 01:00:00 EST

Next DST change: DST begins (the clock jumps one hour forward) at

Sun 2020-03-08 01:59:59 EST

Sun 2020-03-08 03:00:00 EDT

[root@localhost network-scripts]#

The state after clock synchronization is enabled is as follows:

[root@localhost ~]# timedatectl

Local time: һ 2019-12-30 13:39:32 CST

Universal time: һ 2019-12-30 05:39:32 UTC

RTC time: һ 2019-12-30 05:39:33

Time zone: Asia/Shanghai (CST, +0800)

NTP enabled: yes

NTP synchronized: yes

RTC in local TZ: no

DST active: n/a

[root@localhost ~]#

timedatetl list-timezones: List all time zones

timedatetl set-local-rtc 1 adjusts the hardware clock to coincide with the local clock, 0 is set to UTC time

timedatetl set-timezone Asia/Shanghai Set the system timezone to Shanghai

calibration time

yum -y install ntp

#Calibrate time through Alibaba Cloud Time Server

Change comments to original server:

Add the following two lines:

server 192.168.32.221

restrict 192.168.32.221 nomodify notrap noquery

View synchronization status:

[root@localhost ~]# ntpq -p

remote refid st t when poll reach delay offset jitter

------------------------------

*192.168.32.221 120.25.115.20 3 u 83 128 377 0.109 26.318 28.265

[root@localhost ~]#

[root@localhost ~]#

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