centOS时钟同步
安装NTP
[root@callcenterbak ~]# yum install ntp
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* addons: centos.mirror.cdnetworks.com
* base: centos.ustc.edu.cn
* extras: centos.mirror.cdnetworks.com
* updates: centos.mirror.cdnetworks.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package ntp.x86_64 0:4.2.2p1-9.el5.centos.2.1 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================
Package Arch Version Repository Size
=============================================================================================================================
Updating:
ntp x86_64 4.2.2p1-9.el5.centos.2.1 base 1.3 M
Transaction Summary
=============================================================================================================================
Install 0 Package(s)
Update 1 Package(s)
Remove 0 Package(s)
Total download size: 1.3 M
Is this ok [y/N]: y
Downloading Packages:
ntp-4.2.2p1-9.el5.centos.2.1.x86_64.rpm | 1.3 MB 00:00
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID e8562897
base/gpgkey | 1.5 kB 00:00
Importing GPG key 0xE8562897 "CentOS-5 Key (CentOS 5 Official Signing Key) <[email protected]>" from /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Updating : ntp 1/2
Cleanup : ntp 2/2
Updated:
ntp.x86_64 0:4.2.2p1-9.el5.centos.2.1
Complete!
然后cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
[root@callcenterbak ~]# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
cp：是否覆盖“/etc/localtime”? y
这一句是把当前时区调整为上海就是+8区,想改其他时区也可以去看看/usr/share/zoneinfo目录;
最后同步时间：
[root@callcenterbak ~]# ntpdate us.pool.ntp.org
17 Nov 17:18:42 ntpdate[9562]: step time server 66.172.42.32 offset -28366.880328 sec
[root@localhost u01]# clock -w
最后 reboot 系统