ubuntu/centos更改时区并同步系统时间
分享点小经验、之所以写这个文档是因为在做jenkins自动化发布代码的时候、svn不能获取到最新的源码、原因在于svn获取源码有两种方式：1、通过系统时间生成版本号；2、通过HEAD 默认就是时间、所以需要同步jenkins和svn的系统时间、又因为我用的svn是在ubuntu的系统上、ubuntu默认应该是南非的时区、所以同步的时间肯定和centOS的不一样、又牵扯到了修改系统的时区
此操作适用Ubuntu CentOS
1、查看时区：
[root@test1 ~]# date -R
Tue, 17 Dec 2013 18:23:01 +0800
2、修改时区
#1>选择区域：亚洲
[root@test1 ~]# sudo tzselect
[sudo] password for swfsadmin:
Sorry, try again.
[sudo] password for swfsadmin:
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
#2>选择国家：中国
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
#3>选择时区：北京时间
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
#4>确认验证：
The following information has been given:
China
east China - Beijing, Guangdong, Shanghai, etc.
Therefore TZ='Asia/Shanghai' will be used.
Local time is now: Tue Dec 17 18:22:10 CST 2013.
Universal Time is now: Tue Dec 17 10:22:10 UTC 2013.
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
3、复制文件到/etc目录下
sudo cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
#系统同步时间有2中方式：1、同步网站的 2、同步ntpd服务的 本次试验为了方便直接同步网站的 如果有ntpd服务那么直接 [root@test1 ~] ntdate 服务器IP 这样也可以
4、安装ntpdate
sudo apt-get install -y ntpdate //ubuntu
sudo yum install -y ntpdate
5、更新时间
sudo ntpdate time.windows.com
错误总结：
错误提示：
[root@test1 ~]# sudo ntpdate time.windows.com
8 Jan 11:03:59 ntpdate[1343]: the NTP socket is in use, exiting
错误原因：系统开启了ntpd服务
错误解决：停掉ntpd服务 service ntpd stop