- Navigate to the /etc directory and find the sample NTP configuration file, ntp.conf. The sample configuration file is similar to:
## server 127.127.8.0 mode 5 prefer ## ## Undisciplined Local Clock. This is a fake driver intended for backup ## and when no outside source of synchronized time is available. ## #server 127.127.1.0 # local clock (LCL) #fudge 127.127.1.0 stratum 10 # LCL is unsynchronized ## ## Outside source of synchronized time ## # server xx.xx.xx.xx #IP address of server ## ## 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 2 3 4 5 6 14 15 # define trusted keys # requestkey 15 # key (7) for accessing server variables # controlkey 15 # key (6) for accessing server variables
- Copy the sample NTP configuration and uncomment the lines that contain server xx.xx.xx.xx, driftfile, and logfile.
- On the server line, substitute the IP address for the KDC to which you want to synchronize the Teradata Vantage or Unity server, and add additional server lines for any other domain controllers that act as additional KDCs.
You can use the following example to configure your file:
Make sure to enter data that is valid for your system in all uncommented lines.## server 127.127.8.0 mode 5 prefer ## ## Undisciplined Local Clock. This is a fake driver intended for backup ## and when no outside source of synchronized time is available. ## #server 127.127.1.0 # local clock (LCL) #fudge 127.127.1.0 stratum 10 # LCL is unsynchronized ## ## Outside source of synchronized time ## server 141.206.3.8 # IP address of server ## ## 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 2 3 4 5 6 14 15 # define trusted keys # requestkey 15 # key (7) for accessing server variables # controlkey 15 # key (6) for accessing server variables
- Save the NTP configuration file in /etc/ntp.conf.
- To initiate the synchronization, enter the following:
node_name:/# /etc/init.d/ntp start - The synchronization process takes a few minutes to complete. To view the sequence as it takes place, enter:
ntpq -p
The system outputs something similar to:
ntpq -p remote refid st t when poll reach delay offset jitter ===================================================================== *tusday700.td.te .GPS. 1 u 896 1024 377 77.267 5.317 0.193 LOCAL(0) LOCAL(0) 10 l 38 64 377 0.000 0.000 0.001
- Check the log file to verify that all the identified directory servers are synchronized. The log file looks similar to:
Oct 16 12:42:55 node_name ntpd[12387]: ntpd 4.2.0a@1.1213-r Tue Nov 8 17:39:08 UTC 2005 (1) Oct 16 12:42:55 node_name ntpd[12387]: precision = 1.000 usec Oct 16 12:42:55 node_name ntpd[12387]: Listening on interface wildcard, 0.0.0.0#123 Oct 16 12:42:55 node_name ntpd[12387]: Listening on interface wildcard, ::#123 Oct 16 12:42:55 node_name ntpd[12387]: Listening on interface lo, 127.0.0.1#123 Oct 16 12:42:55 node_name ntpd[12387]: Listening on interface eth0, 141.206.28.199#123 Oct 16 12:42:55 node_name ntpd[12387]: kernel time sync status 0040
An entry appears for each synchronized directory server (KDC) and time server, identified by its IP address), as shown in the last line of log file.