anlytics


2011/11/27 18:00

CentOS 시간대(time zone) 변경 및 시간 설정 Tip & Tech

CentOS 시간대 변경

# cp /etc/localtime /etc/localtime.ori <-- 원래 시간 정보를 복사해놓고...필요는 없는데...습관
# cp /usr/share/zoneinfo/Asia/Tokyo /etc/localtime  <-- 원하는 시간대의 정보를 복사해온다. 한국은 Seoul 이죠 (링크가능)
cp: overwrite `/etc/localtime'? Y
# date
Mon Nov 10 10:35:50 JST 2011   <--- 바꼇다

이제 시간대가 바꼇습니다.

이제 시간 동기화

# ntpdate
-bash: ntpdate: command not found

안깔렸네요...

# yum install ntpdate
Loaded plugins: fastestmirror, priorities
Loading mirror speeds from cached hostfile
 * base: mirror.its.sfu.ca
 * epel: mirrors.cat.pdx.edu
 * extras: mirror.its.sfu.ca
 * updates: mirror.its.sfu.ca
53 packages excluded due to repository priority protections
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package ntpdate.x86_64 0:4.2.4p8-2.el6 set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================================
 Package                  Arch                    Version                        Repository             Size
=============================================================================================================
Installing:
 ntpdate                  x86_64                  4.2.4p8-2.el6                  base                   58 k

Transaction Summary
=============================================================================================================
Install       1 Package(s)
Upgrade       0 Package(s)

Total download size: 58 k
Installed size: 74 k
Is this ok [y/N]: y
Downloading Packages:
ntpdate-4.2.4p8-2.el6.x86_64.rpm                                                      |  58 kB     00:00     
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing     : ntpdate-4.2.4p8-2.el6.x86_64                                                          1/1 

Installed:
  ntpdate.x86_64 0:4.2.4p8-2.el6                                                                             

Complete!

설치가 됐고

# ntpdate -b time.kriss.re.kr
10 Nov 17:36:37 ntpdate[23926]: step time server 210.98.16.100 offset -0.067600 sec

# clock -w
cmos로 시간을 넣습니다.

# clock
Sun 10 Nov 2011 05:38:25 PM JST  -0.688055 seconds

크론 등록
# vim /etc/crontab
00 05 * * * root ntpdate -b -s time.kriss.re.kr && clock -w

# /etc/init.d/crond restart
Stopping crond:                                            [  OK  ]
Starting crond:                                              [  OK  ]




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