<div dir="ltr">...and sorry, I have forgot to include printout from ntptrace, so:<br><br>localhost.localdomain: stratum 2, offset 0.000029, synch distance 0.949418<br><a href="http://tak.cesnet.cz">tak.cesnet.cz</a>: stratum 1, offset 0.000000, synch distance 0.002272, refid 'GPS'<br>
<br><div class="gmail_quote">2008/9/8 happymaster23 <span dir="ltr"><<a href="mailto:happymaster23@gmail.com">happymaster23@gmail.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div dir="ltr">Thank you very much,<br><br>all is working perfectly. I am using <a href="http://ntp.nic.cz" target="_blank">ntp.nic.cz</a> (CZ NIC is cz TLD registry), <a href="http://tak.cesnet.cz" target="_blank">tak.cesnet.cz</a> (CESNET is czech academic network) and <a href="http://1.cz.pool.ntp.org" target="_blank">1.cz.pool.ntp.org</a>. I think, that this servers are good? Am I right? Or is better to use more NTP servers?<br>
<br>Thanks<br><br><div class="gmail_quote">2008/9/6 John R Pierce <span dir="ltr"><<a href="mailto:pierce@hogranch.com" target="_blank">pierce@hogranch.com</a>></span><div><div></div><div class="Wj3C7c"><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>happymaster23 wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hello everyone,<br>
<br>
I have problem with time delaying on my CentOS powered server. I have tried to set time in BIOS and in OS (with saving time to BIOS), but time still delaying, so after month is about five minutes delayed. In past I was using this box with Windows and there wasnīt this time problem, but I cant warrant, that there are no hardware issues. So I was decided, that easiest way to fix this problem will be setting up the NTP. I have found many howtos, but I donīt believe them. So my question is: How to clearly set NTP in CentOS 5?<br>
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<br>
<br></div>
# yum install ntp<br>
<br>
then, edit /etc/ntp.conf, and at a minimum specify some ntp servers and restrict access to localhost...<br>
<br>
restrict <a href="http://127.0.0.1" target="_blank">127.0.0.1</a><br>
restrict -6 ::1<br>
<br>
# Use public servers from the <a href="http://pool.ntp.org" target="_blank">pool.ntp.org</a> project.<br>
# Please consider joining the pool (<a href="http://www.pool.ntp.org/join.html" target="_blank">http://www.pool.ntp.org/join.html</a>).<br>
server <a href="http://ntp1.sf-bay.org" target="_blank">ntp1.sf-bay.org</a><br>
server <a href="http://ntp2.sf-bay.org" target="_blank">ntp2.sf-bay.org</a><br>
server <a href="http://reloj.kjsl.com" target="_blank">reloj.kjsl.com</a><br>
server <a href="http://ntp1.mainecoon.com" target="_blank">ntp1.mainecoon.com</a><br>
server <a href="http://ntp2.mainecoon.com" target="_blank">ntp2.mainecoon.com</a><br>
server <a href="http://time.berkeley.netdot.net" target="_blank">time.berkeley.netdot.net</a><br>
<br>
<br>
<br>
(note, those are the LOCAL TO ME ntp servers that *I* am using, you should undoubtedly use others as appropriate, or use the pool servers... see <a href="http://ntp.isc.org/bin/view/Servers/WebHome" target="_blank">http://ntp.isc.org/bin/view/Servers/WebHome</a> for guidelines)...<br>
<br>
finally...<br>
<br>
# chkconfig ntpd on<br>
# service ntpd start<br>
<br>
and wait about 20 mins for it to sync up, and verify functionality with ntptrace...<br>
<br>
# ntptrace<br>
localhost.localdomain: stratum 3, offset 0.004351, synch distance 0.088396<br>
<a href="http://zorro.sf-bay.org" target="_blank">zorro.sf-bay.org</a>: stratum 2, offset 0.000543, synch distance 0.044773<br>
<a href="http://clock.via.net" target="_blank">clock.via.net</a>: stratum 1, offset 0.000027, synch distance 0.000446, refid 'GPS'<br>
<br>
if your systems clock is particularlly funky, it may be a good idea to edit, /etc/sysconfig/ntpd and set SYNC_HWCLOCK=yes rather than no.<br>
(this tells it to set your HW CMOS clock when it sets the system clock during the initial synchronization)<br>
<br>
<br>
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