Re: Simple ntp setup, but I must be doing something wrong (SOLVED)
- From: jboyce@xxxxxxxxxxxxxxx (Jeff Boyce)
- Date: Wed, 30 Aug 2006 16:54:21 GMT
First of all I would like to thank everyone that offered advise. Most everyone indicated that I had a local network configuration issue and not a problem with my ntp configuration. My solution was to use the Port Forwarding feature in the dsl modem that serves as the gateway for my network. I suspect that a better solution would be to re-align how all my hardware is cabled together, but that would require me hiring some outside expertise. Everything seems to be working properly now, as shown in the ntp query results listed below, first tested with a single local server then reset to use the pools.
[root@Bison root]# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*rainforest.neor tick.usnogps.na 2 u 30 64 377 52.211 657.458 3.054
LOCAL(0) LOCAL(0) 10 l 39 64 377 0.000 0.000 0.008
[root@Bison root]# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
LOCAL(0) LOCAL(0) 10 l 51 64 377 0.000 0.000 0.004
+mainframe.cynac time-wsm.missou 3 u 58 64 377 116.462 340.911 2.481
+wsip-68-226-79- wsip-68-227-90- 3 u 44 64 377 130.220 346.355 4.255
*gandalf.llorien 46.186.157.31 2 u 1 64 377 69.325 331.969 0.106
Jeff
----- Original Message ----- From: "Jeff Boyce" <jboyce@xxxxxxxxxxxxxxx>
To: <questions@xxxxxxxxxxxxxxxxx>
Sent: Friday, August 25, 2006 12:58 PM
Subject: Simple ntp setup, but I must be doing something wrong
Greetings -
Over the last several weeks I have been trying to get the NTP service running properly on my company linux file server, but am not having much success. My objective is to synchronize my linux server with a secondary time server or one of the ntp pools, then synchronize a handfull of desktop windows systems with the file server. My reason for doing this is that the timekeeping on the PCs are all over the place, and the server seems to lose anywhere from 1-2 minutes per month. I don't need anything super accurate, just something that is reasonably close and stays consistent. I have read everything I can find on setting this up (the link between the PC's and the file server is working properly) and have been following discussions on this list for about a month, but haven't been able to solve it yet. Below is my config file, the output of ntpq -p and ntpq -pn, and the log messages from the last restart of ntp that matches the configuration file shown below.
[root@Bison root]# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
rainforest.neor 0.0.0.0 16 u - 1024 0 0.000 0.000 4000.00
*LOCAL(0) LOCAL(0) 10 l 21 64 377 0.000 0.000 0.008
[root@Bison root]# ntpq -pn
remote refid st t when poll reach delay offset jitter
==============================================================================
216.176.180.82 0.0.0.0 16 u - 1024 0 0.000 0.000 4000.00
*127.127.1.0 127.127.1.0 10 l 53 64 377 0.000 0.000 0.008
[root@Bison root]# grep --invert-match ^\# /etc/ntp.conf
restrict 127.0.0.1
server 216.176.180.82
server 127.127.1.0 # local clock
fudge 127.127.1.0 stratum 10
driftfile /var/lib/ntp/drift
broadcastdelay 0.008
/var/log/messages
Aug 24 08:26:31 bison ntpd[26341]: ntpd exiting on signal 15
Aug 24 08:26:31 bison ntpd: ntpd shutdown succeeded
Aug 24 08:26:56 bison ntpdate[27483]: no server suitable for synchronization found
Aug 24 08:26:56 bison ntpd: failed
Aug 24 08:26:56 bison ntpd[27487]: ntpd 4.1.2@xxxxx Tue Feb 24 06:32:25 EST 2004 (1)
Aug 24 08:26:56 bison ntpd: ntpd startup succeeded
Aug 24 08:26:56 bison ntpd[27487]: precision = 9 usec
Aug 24 08:26:56 bison ntpd[27487]: kernel time discipline status 0040
Aug 24 08:26:56 bison ntpd[27487]: frequency initialized 0.000 from /var/lib/ntp/drift
Aug 24 08:28:28 bison sshd(pam_unix)[27593]: session opened for user root by (uid=0)
Aug 24 08:28:51 bison sshd(pam_unix)[27593]: session closed for user root
Aug 24 08:30:10 bison ntpd[27487]: kernel time discipline status change 41
Aug 24 08:31:15 bison ntpd[27487]: kernel time discipline status change 1
I previously thought the problem was firewall related. I have since turned off the firewall of my linux box, and the firewall application on my DSL router/gateway is set to allow both incoming and outgoing ntp communication. My linux box is a Dell PE 2600 with RHEL 3 fully up to date (U8). Therefore my current version of NTP is 4.1.2-4.EL3.1. The secondary time server listed in my config is from the stratum two time server list on ntp.org. This time server is located in the Seattle area (near my location) and is listed as having an open access policy. It is interesting to note that in my ntpq query this time server provides a listing of stratum 16, which I assume is why ntp is falling back to the local time clock. When I have substituted the ntp pool servers into my config file, then my ntp query shows that nothing is connecting (i.e., no astrix listed before any of the server names). Have I made a simple mistake somewhere in my config file? I thought I had it stripped down to the minimum. Can someone give me another diagnostic avenue to go down, I am running out of ideas here? Thanks.
Jeff Boyce
www.meridianenv.com
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