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>Cov
(Using ntpdate)
Line 39: Line 39:
  
 
=== Using ntpdate ===
 
=== Using ntpdate ===
Change the contents of <code>/etc/cron.daily/ntpdate<code> to:
+
Change the contents of <code>/etc/cron.daily/ntpdate</code> to:
 
<pre>
 
<pre>
 
ntpdate ntp-1.vt.edu ntp-2.vt.edu ntp-3.vt.edu ntp-4.vt.edu
 
ntpdate ntp-1.vt.edu ntp-2.vt.edu ntp-3.vt.edu ntp-4.vt.edu

Revision as of 18:36, 15 December 2009

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)

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