On 10/22/2010 2:24 PM, Florin Andrei wrote:
I've 3 machines that would not synchronize to NTP servers no matter
what. They always end up stratum 10. They are regular Dell servers,
kernel 2.6.18-128.7.1.0.1.el5, ntp 4.2.2p1-7.el5
I tried to sync up to local NTP servers, I tried the US pool, I cleaned
up the drift file, nothing works, even though the initial offset is
really small (ntpdate seems to work).
Config file:
server 10.10.16.65 iburst
server 10.10.16.64 iburst
You need to configure at least one more server here, two more would be
better.
server 127.127.1.0 # local clock
fudge 127.127.1.0 stratum 10
driftfile /etc/ntp/drift
restrict 127.0.0.0 mask 255.0.0.0
restrict 192.168.3.0 mask 255.255.255.0 nomodify notrap
restrict default ignore
Lose the restrict statements. Getting it working first!
You may have to ask your networking people to allow NTP traffic to get
through the firewall. Port 123 should be allowed.
Command line:
ntpd -d -s /var/lib/ntp/stats -x -u ntp:ntp -p /var/run/ntpd.pid
This is the state they end up in:
# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
ut12 .INIT. 16 u - 64 0 0.000 0.000 0.000
ut11 .INIT. 16 u - 64 0 0.000 0.000 0.000
*LOCAL(0) .LOCL. 10 l 2 64 77 0.000 0.000 0.001
I don't see where you configured ut12 and ut11!!!!
You need to wait a few minutes after startup before ntpq can tell you
anything useful! I'd wait at least five minutes before issuing ntpq -p.
This is the status of one of the servers they are querying:
remote refid st t when poll reach delay offset jitter
==============================================================================
+ns1.tic.com 128.9.176.30 2 u 74 1024 377 54.117 -3.711 42.480
+you.dontlike.us 128.4.40.12 3 u 30 1024 377 76.102 -1.723 0.183
*clock.team-cymr 172.16.65.22 2 u 100 1024 377 67.046 3.628 0.130
LOCAL(0) .LOCL. 10 l 31 64 377 0.000 0.000 0.001
<snip>
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