如果你的 Linux 系统时区配置不正确，必需要手动调整到正确的当地时区。NTP 对时间的同步处理只计算当地时间与 UTC 时间的偏移量，因此配置一个 NTP 对时间进行同步并不能解决时区不正确的问题。所以大家在用了国外云计算服务商如 Microsoft Azure 或其它 VPS、虚拟机时，需要注意是否与中国大陆的时区一致
[root@localhost yum.repos.d]# date
Sun Mar 25 21:39:46 EDT 2018
[root@localhost yum.repos.d]# ls -l /etc/localtime
lrwxrwxrwx. 1 root root 38 Jan 2 13:22 /etc/localtime -> ../usr/share/zoneinfo/America/New_York
[root@localhost yum.repos.d]# tzselect
Please identify a location so that time zone rules can be set correctly.
Please select a continent or ocean.
1) Africa
2) Americas
3) Antarctica
4) Arctic Ocean
5) Asia
6) Atlantic Ocean
7) Australia
8) Europe
9) Indian Ocean
10) Pacific Ocean
11) none - I want to specify the time zone using the Posix TZ format.
#? 5
Please select a country.
1) Afghanistan 18) Israel 35) Palestine
2) Armenia 19) Japan 36) Philippines
3) Azerbaijan 20) Jordan 37) Qatar
4) Bahrain 21) Kazakhstan 38) Russia
5) Bangladesh 22) Korea (North) 39) Saudi Arabia
6) Bhutan 23) Korea (South) 40) Singapore
7) Brunei 24) Kuwait 41) Sri Lanka
8) Cambodia 25) Kyrgyzstan 42) Syria
9) China 26) Laos 43) Taiwan
10) Cyprus 27) Lebanon 44) Tajikistan
11) East Timor 28) Macau 45) Thailand
12) Georgia 29) Malaysia 46) Turkmenistan
13) Hong Kong 30) Mongolia 47) United Arab Emirates
14) India 31) Myanmar (Burma) 48) Uzbekistan
15) Indonesia 32) Nepal 49) Vietnam
16) Iran 33) Oman 50) Yemen
17) Iraq 34) Pakistan
#? 9
Please select one of the following time zone regions.
1) Beijing Time
2) Xinjiang Time
#? 1
The following information has been given:
China
Beijing Time
Therefore TZ=‘Asia/Shanghai‘ will be used.
Local time is now: Mon Mar 26 09:40:44 CST 2018.
Universal Time is now: Mon Mar 26 01:40:44 UTC 2018.
Is the above information OK?
1) Yes
2) No
#? 1
You can make this change permanent for yourself by appending the line
TZ=‘Asia/Shanghai‘; export TZ
to the file ‘.profile‘ in your home directory; then log out and log in again.
Here is that TZ value again, this time on standard output so that you
can use the /usr/bin/tzselect command in shell scripts:
Asia/Shanghai
[root@localhost yum.repos.d]# timedatectl
Local time: Sun 2018-03-25 21:44:17 EDT
Universal time: Mon 2018-03-26 01:44:17 UTC
RTC time: Mon 2018-03-26 01:44:16
Time zone: America/New_York (EDT, -0400)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: no
DST active: yes
Last DST change: DST began at
Sun 2018-03-11 01:59:59 EST
Sun 2018-03-11 03:00:00 EDT
Next DST change: DST ends (the clock jumps one hour backwards) at
Sun 2018-11-04 01:59:59 EDT
Sun 2018-11-04 01:00:00 EST
[root@localhost yum.repos.d]# timedatectl set-timezone ‘Asia/Shanghai‘
[root@localhost yum.repos.d]# timedatectl
Local time: Mon 2018-03-26 09:45:34 CST
Universal time: Mon 2018-03-26 01:45:34 UTC
RTC time: Mon 2018-03-26 01:45:34
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: no
DST active: n/a
