执行tzselect命令-->选择Asia-->选择China-->选择east China - Beijing, Guangdong, Shanghai, etc-->然后输入1

选择（5）Asia时区

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

选择国家（9）China

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

 

选择（1）Shanghai当前时区

Please select one of the following time zone regions.

1) east China - Beijing, Guangdong, Shanghai, etc.

2) Heilongjiang (except Mohe), Jilin

3) central China - Sichuan, Yunnan, Guangxi, Shaanxi, Guizhou, etc.

4) most of Tibet & Xinjiang

5) west Tibet & Xinjiang

#? 1

 

保存（1）Yes 时区

The following information has been given:

 

China

east China - Beijing, Guangdong, Shanghai, etc.

 

Therefore TZ='Asia/Shanghai' will be used.

Local time is now: Wed May 4 14:29:25 CST 2016.

Universal Time is now: Wed May 4 06:29:25 UTC 2016.

Is the above information OK?

1) Yes

2) No

#? 1

执行完tzselect命令选择时区后，时区并没有更改，只是在命令最后提示你可以执行

TZ='Asia/Shanghai'; export TZ

修改时区配置文件

vi /etc/sysconfig/clock

ZONE="Asia/Shanghai"

 

链接到上海时区

rm -rf /etc/localtime

ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

 

查看时区已经更改

cat /etc/sysconfig/clock

The time zone of the system is defined by the contents of /etc/localtime.

This file is only for evaluation by system-config-date, do not rely on its

contents elsewhere.

ZONE="Asia/Shanghai"

 

ntp服务器联网同步

美国时间同步服务器 ntpdate time.nist.gov

中国国家授时中心 ntpdate 210.72.145.44

服务器(上海) ntpdate ntp.api.bz

复旦 ntpdate nt

p.fudan.edu.cn

微软公司授时主机(美国) ntpdate time.windows.com

 台警大授时中心(台湾) ntpdate asia.pool.ntp.org

 如果提示报错no server suitable for synchronization found

解决方法添加-u参数可以越过防火墙与主机同步

 比如 ntpdate -u 210.72.145.44

 date 时间查看

 重启服务器测试更改结果

reboot 或者 init6

另：由于这台服务器上搭建的是cactiez 服务器时间改过来了可程序时间不对

cacti是由php解析的 那么我们需要更改一下php.ini里的时间 也就是要更改date.timezone（；是注释作用）

且php如果是编译安装的，date.timezone这条是注释掉的，而且等号后面没有内容，需要手动打开，填上