Difference between revisions of "Network Time Protocol"

From the Linux and Unix Users Group at Virginia Teck Wiki
Jump to: navigation, search
imported>Cov
imported>Mutantmonkey
Line 6: Line 6:
 
* '''ntp-3.vt.edu''' (198.82.1.203)
 
* '''ntp-3.vt.edu''' (198.82.1.203)
 
* '''ntp-4.vt.edu''' (198.82.1.204)
 
* '''ntp-4.vt.edu''' (198.82.1.204)
 +
 +
ntp-1.vt.edu is also available over [[IPv6]] as '''ntp.vt.edu'''.
  
 
=== Using Gnome ===
 
=== Using Gnome ===

Revision as of 04:33, 29 May 2011

Syncing your clock to Virginia Tech's time servers

Virginia Tech hosts four Network Time Protocol (NTP) servers:

  • ntp-1.vt.edu (198.82.1.201)
  • ntp-2.vt.edu (198.82.1.202)
  • ntp-3.vt.edu (198.82.1.203)
  • ntp-4.vt.edu (198.82.1.204)

ntp-1.vt.edu is also available over IPv6 as ntp.vt.edu.

Using Gnome

  1. Right click on the clock in the top right hand corner of your desktop and select Adjust Date & Time.
  2. You may have to enter your password to continue.
  3. From the Configuration drop-down list, select Keep synchronized with Internet servers.
  4. You may need to click Install NTP support.
  5. Click Select Servers.
  6. Type ntp-1.vt.edu
  7. Click the Add button.
  8. Type ntp-2.vt.edu
  9. Click the Add button.
  10. Type ntp-3.vt.edu
  11. Click the Add button.
  12. Type ntp-4.vt.edu
  13. Click the Add button.
  14. Click the Close button.
  15. Click the Close button again.

Using ntpd

Backup your /etc/ntp.conf:

# cp /etc/ntp.conf /etc/ntp.conf.bak

Add the following lines to /etc/ntp.conf:

server ntp-1.vt.edu
server ntp-2.vt.edu
server ntp-3.vt.edu
server ntp-4.vt.edu

Using ntpdate

Change the contents of /etc/cron.daily/ntpdate to:

ntpdate ntp-1.vt.edu ntp-2.vt.edu ntp-3.vt.edu ntp-4.vt.edu