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Network Time Protocol

243 bytes removed, 18:36, 15 December 2009
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== Syncing your clock to Virginia Tech's time servers ==
Virginia Tech hosts four [http[w://en.wikipedia.org/wiki/Network_Time_Protocol Network Time Protocol|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 ===# Right click on the clock in the top right hand corner of your desktop and select '''Adjust Date &amp; Time'''.# You may have to enter your password to continue.# From the '''Configuration''' drop-down list, select '''Keep synchronized with Internet servers'''.# You may need to click '''Install NTP support'''.# Click '''Select Servers'''.# Type <code>ntp-1.vt.edu</code># Click the '''Add''' button.# Type <code>ntp-2.vt.edu</code># Click the '''Add''' button.# Type <code>ntp-3.vt.edu</code># Click the '''Add''' button.# Type <code>ntp-4.vt.edu</code># Click the '''Add''' button.# Click the '''Close''' button.# Click the '''Close''' button again.
<ul><li> '''ntp-1.vt.edu''' (198.82.1.201)
</li><li> '''ntp-2.vt.edu''' (198.82.1.202)
</li><li> '''ntp-3.vt.edu''' (198.82.1.203)
</li><li> '''ntp-4.vt.edu''' (198.82.1.204)
</li></ul>
=== Using GNOME ===
<ol><li> Right click on the clock in the top right hand corner of your desktop and select '''Adjust Date &amp; Time'''.
</li><li> You may have to enter your password to continue.
</li><li> From the '''Configuration''' drop-down list, select '''Keep synchronized with Internet servers'''.
</li><li> You may need to click '''Install NTP support'''.
</li><li> Click '''Select Servers'''.
</li><li> Type <code>ntp-1.vt.edu</code>
</li><li> Click the '''Add''' button.
</li><li> Type <code>ntp-2.vt.edu</code>
</li><li> Click the '''Add''' button.
</li><li> Type <code>ntp-3.vt.edu</code>
</li><li> Click the '''Add''' button.
</li><li> Type <code>ntp-4.vt.edu</code>
</li><li> Click the '''Add''' button.
</li><li> Click the '''Close''' button.
</li><li> Click the '''Close''' button again.
</li></ol>
=== Using ntpd ===
Backup your <olcode><li> Backup your /etc/ntp.conf <code></code>:<pre># cp /etc/ntp.conf /etc/ntp.conf.bak</pre></li><li> Add the following lines to <code>/etc/ntp.conf</code>: </li></olpre><code></code><pre>server ntp-1.vt.edu
server ntp-2.vt.edu
server ntp-3.vt.edu
server ntp-4.vt.edu</pre> 
=== Using ntpdate ===
<ol><li> Change the contents of <code>/etc/cron.daily/ntpdate to: <code></code>to:<pre>ntpdate ntp-1.vt.edu ntp-2.vt.edu ntp-3.vt.edu ntp-4.vt.edu</pre></li></ol>
[[Category:Howtos]]
[[Category:Campus computing resources]]
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