sudo dpkg-reconfigure tzdata -> /etc/timezone <- Europe/Vienna
sudo nano /etc/ntp.conf

server 0.at.pool.ntp.org
server 1.at.pool.ntp.org
server 2.at.pool.ntp.org
server 3.at.pool.ntp.org

sudo service ntp restart

sudo service ntp restart 

• Firewallport: 123 TCP und UDP
• /etc/ntp.conf

##
## Undisciplined Local Clock. This is a fake driver intended for backup
## and when no outside source of synchronized time is available.
##
#servers pool.ntp.org

server ptbtime1.ptb.de
#server 0.de.pool.ntp.org
server 127.127.1.0              # local clock (LCL)
fudge  127.127.1.0 stratum 10   # LCL is unsynchronized

##
## Add external Servers using
## # rcntp addserver <yourserver>
## 

##
## Miscellaneous stuff
##

driftfile /var/lib/ntp/drift/ntp.drift # path for drift file

logfile   /var/log/ntp          # alternate log file
# logconfig =syncstatus + sysevents
# logconfig =all

# statsdir /tmp/                # directory for statistics files
# filegen peerstats  file peerstats  type day enable
# filegen loopstats  file loopstats  type day enable
# filegen clockstats file clockstats type day enable

#
# Authentication stuff
#
keys /etc/ntp.keys              # path for keys file
trustedkey 1                    # define trusted keys
requestkey 1                    # key (7) for accessing server variables
# controlkey 15                 # key (6) for accessing server variables

rcntp start

rcntp status

• NTP-Client deaktivieren

yast timezone

• [x] Rechnerzeit ist auf UTC eingestellt
• [Ändern]
  • (x) Manuell

• /etc/init.d/zeit

#!/bin/sh
case "$1" in
start)
    echo "Sync Time ..."
    /usr/sbin/sntp -P no -r 10.67.0.2
#    hwclock -w // nicht bei virtuellen XEN Maschinen
    ;;
*)
    echo "Usage: 'zeit' {start}" >&2
    exit 64
    ;;
esac
exit 0

chmod + /etc/init.d/zeit

cd /etc/init.d/rc3.d

ln -sf ../zeit S15zeit

/etc/init.d/zeit start