1、前提
由于公司有在印尼的项目，所以购买了阿里云在新加坡机房的服务器（在印尼还没有），印尼当地使用的是东七区的时间，所以领导要求修改阿里云ECS系统的时区。
2、动手
修改阿里云ECS服务器系统的时区有两种方法：
1、通过tzselect修改：
[root@iZt4nbfbkurxm1k2bmdsqvZ /]# 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
#? 15
Please select one of the following time zone regions.
1) Java, Sumatra
2) Borneo (west, central)
3) Borneo (east, south); Sulawesi/Celebes, Bali, Nusa Tengarra; Timor (west)
4) New Guinea (West Papua / Irian Jaya); Malukus/Moluccas
#? 1The following information has been given: Indonesia
Java, SumatraTherefore TZ='Asia/Jakarta' will be used.
Local time is now: Wed Sep 27 12:58:33 WIB 2017.
Universal Time is now: Wed Sep 27 05:58:33 UTC 2017.
Is the above information OK?
1) Yes
2) No
#? 1You can make this change permanent for yourself by appending the line
TZ='Asia/Jakarta'; 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/Jakarta
[root@iZt4nbfbkurxm1k2bmdsqvZ /]#
2、通过修改配置文件：
1.vi /etc/sysconfig/clock
2.ZONE=Asia/Jakarta（查/usr/share/zoneinfo下面的文件）
3.rm /etc/localtime
4.ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
然后停止ntp服务，过一段时间之后启动ntp服务即可。
[root@iZt4nbfbkurxm1k2bmdsqvZ /]# date
Wed Sep 27 13:00:57 WIB 2017
[root@iZt4nbfbkurxm1k2bmdsqvZ /]# date -R
Wed, 27 Sep 2017 13:01:06 +0700
[root@iZt4nbfbkurxm1k2bmdsqvZ /]#
东八区时间为：
修改成功！
