Re: ntp questions
Gene Heskett wrote:
> Greetings all;
>
> In an attempt to reduce the load on my time servers and to mitigate the
> jumps in system time that can play heck with timing errors of a running
> LinuxCNc session, I have installed an ntp client on a raspbian buster,
> and I think I have told it to listen to iburst from this machine. All
> my other machine are setup similar and appear to be working ok.
>
> But the pi with an identical config is still not synching.
> 2 working machine symply say ok when asked for status, old wheezy
> installs.
> A gene@shop:~$ sudo /etc/init.d/ntp status
> [ ok ] NTP server is running.
>
> Which is typical when its all synched
>
> but the pi is reporting:
> pi@rpi4:/var/log/ntpstats $ sudo /etc//init.d/ntp status
> ● ntp.service - Network Time Service
> Loaded: loaded (/lib/systemd/system/ntp.service; enabled; vendor
> preset: enabled)
> Active: active (running) since Sat 2020-03-14 20:17:25 EDT; 57min ago
> Docs: man:ntpd(8)
> Process: 16957 ExecStart=/usr/lib/ntp/ntp-systemd-wrapper (code=exited,
> status=0/SUCCESS)
> Main PID: 16963 (ntpd)
> Tasks: 2 (limit: 4033)
> Memory: 936.0K
> CGroup: /system.slice/ntp.service
> └─16963 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 114:122
>
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: leapsecond file
> ('/usr/share/zoneinfo/leap-seconds.list'): loaded,
> expire=2020-06-28T00:00:00Z last=2017-01-01T00:00:00Z ofs=37
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: Listen and drop on 0
> v6wildcard [::]:123
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: Listen and drop on 1
> v4wildcard 0.0.0.0:123
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: Listen normally on 2 lo
> 127.0.0.1:123
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: Listen normally on 3 eth0
> 192.168.71.13:123
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: Listen normally on 4 lo
> [::1]:123
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: Listening on routing socket
> on fd #21 for interface updates
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: Listen for broadcasts to
> 192.168.71.255 on interface #3 eth0
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: kernel reports TIME_ERROR:
> 0x2041: Clock Unsynchronized
> Mar 14 20:17:25 rpi4.coyote.den ntpd[16963]: kernel reports TIME_ERROR:
> 0x2041: Clock Unsynchronized
>
> What is wrong with my /etc/ntp.conf on the pi that is causing this
> apparent failure?
>
> Looking for ntp.conf diffs a grep -v '#' reports for a working machines
> ntp.conf:
> driftfile /var/lib/ntp/ntp.drift
> statsdir /var/log/ntpstats/
> statistics loopstats peerstats clockstats
> filegen loopstats file loopstats type day enable
> filegen peerstats file peerstats type day enable
> filegen clockstats file clockstats type day enable
> server 192.168.71.3 iburst
> restrict -4 default kod notrap nomodify nopeer noquery
> restrict -6 default kod notrap nomodify nopeer noquery
> restrict 127.0.0.1
> restrict ::1
> disable auth
> broadcastclient
>
> while that same inverted grep on the pi reports:
>
> driftfile /var/lib/ntp/ntp.drift
> leapfile /usr/share/zoneinfo/leap-seconds.list
> statsdir /var/log/ntpstats/
> statistics loopstats peerstats clockstats
> filegen loopstats file loopstats type day enable
> filegen peerstats file peerstats type day enable
> filegen clockstats file clockstats type day enable
> server coyote.coyote.den iburst
> restrict -4 default kod notrap nomodify nopeer noquery limited
> restrict -6 default kod notrap nomodify nopeer noquery limited
> restrict 127.0.0.1
> restrict ::1
> restrict source notrap nomodify noquery <-different, # it no change
> broadcast 192.168.71.255
> disable auth
> broadcastclient
>
> Thanks everybody.
>
>
> Cheers, Gene Heskett
I spent 1-2 days last year configuring a set of ntp servers and client and
had also difficulties getting all done.
unfortunately I can not access the notes I did, but I'll post to you
tomorrow
regards
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