Some tome you want to change Timezone in VOS3000 after VOS3000 installation For Example I want to change my Time zone to Asia/Shanghai
easy way to change time zone on centos run the system command
and select your timezone
click OK and reboot the server.
if system-config-date command is not working then install this tool
# yum install system-config-date
manual way to do this is follow the below steps.
Reinstall Timezone database
# yum -y reinstall tzdata
Install NTP Client to accurate time according to time zone
# yum -y install ntp # chkconfig ntpd on # service ntpd restart Remove localtime current file
# rm -f /etc/localtime
Link Timezone file with /etc/localtime you can find your timezone file in /usr/share/zoneinfo/
# ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
Run tzselect command and select your timezone and note your timezone
for example Asia/Shanghai
Edit /etc/sysconfig/clock file and change with your Timezone
# nano /etc/sysconfig/clock
Reboot the server Wait for few minutes check your time has synchronized with NTP server it will show slimier to below
synchronized to NTP server (220.127.116.11) at stratum 2 time correct to within 31 ms polling server every 64 s
check time and timezone
check your hardware clock
Important TIP Editing Timezone on /etc/sysconfig/clock is very important If you will not update this file VOS3000 client will not show your timezone changes in VOS3000 client.