Problem with NTP.

Andrew.Bridgeman at corusgroup.com Andrew.Bridgeman at corusgroup.com
Tue Apr 21 09:13:29 UTC 2009




Thanks for the reply Simon. Here is the ntpq and ntp.conf info.

     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
 Server1              Server2    4 u    9   64   77   18.104  -1193.4
3.107
  Server2                               Server 3         3  u         5
64      77      19.688      -1188.2      1.623


restrict default noquery nomodify
restrict 127.0.0.1
restrict Server1 mask 255.255.255.255 nomodify notrap noquery
restrict Server2 mask 255.255.255.0 nomodify notrap
server Server1 minpoll 4 maxpoll 6
server Server2 minpoll 4 maxpoll 6
driftfile /var/lib/ntp/drift
logfile /var/log/ntp.log

Remember I use this config for numerous other machines, it is just this one
I
have an issue with. Any thoughts on possible solutions would be much
appreciated.

FYI

When I run ntpq -p on all of our other Linux machines it shows as below.

     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
 +Server1              Server2    4 u    2   64   377   18.104  -12.428
8.107
  *server2                               Server 3         3  u         58
64      377      19.688      -0.482       10.623

Regards

Andrew Bridgeman




                                                                           
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Well the root cause of this issue could be located on various places.
             What I can suggest to try is run # ntpq -p <ntp source server>
             <ntp source server> means the server which you are trying to
synchronize with

             If the connection is refused than you know that you have a
permissions problem somewhere.

             An other option is to show the output of ntpq -p and
/etc/ntp.conf
                         Please make servernames and IP addresses
anonymous.

Cheers,
Simon

>-----Original Message-----
>From: redhat-list-bounces at redhat.com
>[mailto:redhat-list-bounces at redhat.com] On Behalf Of
>Andrew.Bridgeman at corusgroup.com
>Sent: Tuesday, April 21, 2009 10:44 AM
>To: redhat-list at redhat.com
>Subject: Problem with NTP.
>
>
>I have a new Redhat version 4 server that was built last week. I have
>edited the /etc/ntp.conf and made sure all the entries in the folder
>/etc/ntp are the same as all the other Linux machines we have
>onsite. It
>seems to find time sources as when I use ntpq -p it comes up
>with the name
>and IP Addresses but I just cannot get it too sync i.e. has a
>* or + next
>to server IP Addresses. I have pretty much been through the
>config on the
>machine and the only two things I can see that are different
>is that it is
>using itself for NIS as it is the NIS master and also in the
>/etc/hosts.equiv file it has individual entries not + at trusted
>like all the
>other machines. I do not think these differences are having an
>impact on
>NTP not synchronising but just thought I would mention them anyway.
>
>Does anyone know what I can try to solve this issue as the time on the
>server needs to be the same as all the other machines.
>
>Any help would be much appreciated.
>
>Regards
>
>Andrew Bridgeman
>
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**********************************************************************
This transmission is confidential and must not be used or disclosed by
anyone other than the intended recipient. Neither Tata Steel Europe Limited
nor
any of its subsidiaries can accept any responsibility for any use or
misuse of the transmission by anyone.

For address and company registration details of certain entities
within the Corus group of companies, please visit
http://www.corusgroup.com/entities

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