date
- # date --> check current system time.
- Thu Sep 2 05:08:43 NZST 2010
- # date MMDDhhmmYYYY --> define the time manually.
- # date -u --> check time with timezone UTC
- Wed Sep 1 17:09:12 UTC 2010
hwclock
- # hwclock
- --> check bios time.
- # hwclock -w
- --> write the system time into bios.
ntpdate
- # ntpdate time.nist.gov
- --> sync system time with outside time server of time.nist.gov.
- (service NTP should be shutdown before the command using)
NTP client define NTP server where sync. time from.
- # vim /etc/ntp/ntpservers
- # clock.redhat.com
- # clock2.redhat.com
- # 10.11.0.160
NTP server bring up
- # vim /etc/ntp.conf
- --> configuration file
- # service ntpd start
- # chkconfig ntpd on
Timezone change (e.g. NewZealand)
- # cp /usr/share/zoneinfo/Etc/GMT+12 /etc/localtime
or
- # cp /usr/share/zoneinfo/ZN /etc/localtime
or
- # vi /etc/sysconfig/clock
Time server in Taiwan
- tock.stdtime.gov.tw ( 211.22.103.157 )
- tick.stdtime.gov.tw ( 118.163.81.62 )
- time.stdtime.gov.tw ( 118.163.81.61 )
On your Time server, review time sync. status with Time server ( stratum 1 )
- # ntpq -p
Make sure the NTP port 123 not be block by Firewall
- netstat -tlunp | grep ntp
沒有留言:
張貼留言