[ntp:questions] No synchronization !

Folkert van Heusden folkert at vanheusden.com
Thu Nov 4 14:35:59 UTC 2004


check that your firewall allows port 123 (UDP) in both directions

> i've got two machines in the system -
>
> one being the classic server/firewall (named sammy.k106, Linux
> kernel-2.4.18 (133MHz, 16MB RAM), 2 eth adapters, ntpd-2.4.0, apache,
> smtp, pop, dhcp, dns, ntp, ftp, ssh, ..., firewall)
>
> and another being the workstation behind the firewall (Linux
> kernel-2.6.7, ntpd-2.4.0)
>
>
> server ntp.conf:
>
> server 127.127.1.0              # local clock (LCL)
> fudge  127.127.1.0 stratum 10   # LCL is unsynchronized
>
> driftfile /etc/ntp.drift        # path for drift file
> logfile   /var/log/ntp          # alternate log file
>
> server si.pool.ntp.org
> server 0.pool.ntp.org
> server 1.pool.ntp.org
> server 2.pool.ntp.org
> server europe.pool.ntp.org
>
> workstation ntp.conf:
>
> server 127.127.1.0  # local clock (LCL)
> fudge 127.127.1.0  stratum 10 # LCL is unsynchronized
>
> driftfile /var/lib/ntp/drift/ntp.drift # path for drift file
> logfile /var/log/ntp            # alternate log file
>
> server sammy.k106
>
>
> Now, while workstation synchronizes within e.g. 10 minutes, the server
> never does:
>
> Server:
>
> ntpq -p:
>
>       remote           refid      st t when poll reach   delay   offset
>   jitter
> ==============================================================================
> *LOCAL(0)        LOCAL(0)        10 l   39   64  377    0.000    0.000
>   0.015
>   thr.cmm.ki.si   .INIT.          16 u    - 1024    0    0.000    0.000
> 4000.00
>   zepan.org       .INIT.          16 u    - 1024    0    0.000    0.000
> 4000.00
>   turnstile.ispl. .INIT.          16 u    - 1024    0    0.000    0.000
> 4000.00
>   gobio2.net      .INIT.          16 u    - 1024    0    0.000    0.000
> 4000.00
>   dungeon.mctavis .INIT.          16 u    - 1024    0    0.000    0.000
> 4000.00
>
> cat /var/log/ntp:
>
>   1 Nov 19:51:00 ntpd[4876]: synchronized to LOCAL(0), stratum=10
>   1 Nov 19:51:00 ntpd[4876]: kernel time sync disabled 0041
>   1 Nov 19:52:03 ntpd[4876]: kernel time sync enabled 0001
>
> cat /var/log/messages:
>
> Nov  1 19:47:44 sammy ntpdate[4873]: adjust time server 193.2.10.117
> offset -0.021003 sec
> Nov  1 19:47:45 sammy ntpd[4876]: ntpd 4.2.0 at 1.1161-r Mon Nov  1
> 18:05:42 CET 2004 (1)
> (* the next line seems suspicious to me *)
> Nov  1 19:47:45 sammy ntpd[4876]: signal_no_reset: signal 13 had flags
> 4000000
> Nov  1 19:47:45 sammy ntpd[4876]: precision = 17.000 usec
> Nov  1 19:47:45 sammy ntpd[4876]: kernel time sync status 0040
> Nov  1 19:47:45 sammy ntpd[4876]: frequency initialized 0.000 PPM from
> /etc/ntp.drift
>
>
>
>
>
> Workstation
>
> ntp -q:
>
>       remote           refid      st t when poll reach   delay   offset
>   jitter
> ==============================================================================
>   LOCAL(0)        LOCAL(0)        10 l   43   64  377    0.000    0.000
>    0.001
> *sammy.k106      LOCAL(0)        11 u  249 1024  377    1.975    0.150
>   0.821
>
> /var/log/ntp
>
>   4 Nov 08:12:11 ntpd[3850]: synchronized to LOCAL(0), stratum 10
>   4 Nov 08:12:11 ntpd[3850]: kernel time sync disabled 0041
>   4 Nov 08:13:17 ntpd[3850]: synchronized to 192.168.1.1, stratum 11 4
> Nov 08:16:28 ntpd[3850]: kernel time sync enabled 0001
>
> /var/log/messages
>
> Nov  4 08:08:57 kobal1 ntpdate[3478]: step time server 192.168.1.1
> offset -3.132535 sec
> Nov  4 08:08:57 kobal1 ntpd[3850]: ntpd 4.2.0a at 1.1213-r Tue Apr  6
> 01:34:28 UTC 2004 (1)
> Nov  4 08:08:57 kobal1 ntpd[3850]: precision = 1.000 usec
> Nov  4 08:08:57 kobal1 ntpd[3850]: Listening on interface wildcard,
> 0.0.0.0#123
> Nov  4 08:08:57 kobal1 ntpd[3850]: Listening on interface wildcard,
> ::#123 Nov  4 08:08:57 kobal1 ntpd[3850]: Listening on interface lo,
> 127.0.0.1#123 Nov  4 08:08:57 kobal1 ntpd[3850]: Listening on interface
> eth0,
> 192.168.1.11#123
> Nov  4 08:08:57 kobal1 ntpd[3850]: Listening on interface vmnet8,
> 192.168.245.1#123
> Nov  4 08:08:57 kobal1 ntpd[3850]: kernel time sync status 0040
> Nov  4 08:08:58 kobal1 ntpd[3850]: frequency initialized -137.297 PPM
> from /var/lib/ntp/drift/ntp.drift
>
>
>
> What is the problem here ?
>
> Izo
> _______________________________________________
> questions mailing list
> questions at lists.ntp.isc.org
> https://lists.ntp.isc.org/mailman/listinfo/questions


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