How to change Timezone in VOS3000 after VOS3000 installation ?

Please note that this document is for reference only we do not take any responsible for any data lost.

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 

# system-config-date

and select your timezone

CentOS Vos3000

click OK   and reboot the server.

if  system-config-date  command is not working then install this tool 

# yum install system-config-date

Manualy to do this, follow these steps.

Reinstall Timezone database
# yum reinstall tzdata

If tadata not installed then
# yum install 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/Manila /etc/localtime

Run tzselect command and select your timezone and note your timezone
for example Asia/Manila
# tzselect

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
# ntpstat

synchronized to NTP server ( at stratum 2 time correct to within 31 ms polling server every 64 s

check time and timezone
# date

check your hardware clock
# hwclock

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.

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