[ntp:questions] systems won't synchronize no matter what

unruh unruh at wormhole.physics.ubc.ca
Sun Oct 24 18:23:33 UTC 2010


On 2010-10-22, Florin Andrei <florin at andrei.myip.org> 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
> 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

get rid of the restric lines. GEt rid of the local clock line, and then
try again.
Get rid of the fudge line

>
>
> 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
>
>
> 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
>
>
> This is syslog:
>
> Oct 22 11:06:41 db23 ntpdate[30868]: step time server 10.10.16.64 offset 
> 0.056358 sec
> Oct 22 11:06:41 db23 ntpd[30870]: ntpd 4.2.2p1 at 1.1570-o Tue Aug 21 
> 17:51:27 UTC 2007 (1)
> Oct 22 11:06:41 db23 ntpd[30870]: precision = 1.000 usec
> Oct 22 11:06:41 db23 ntpd[30870]: Listening on interface wildcard, 
> 0.0.0.0#123 Disabled
> Oct 22 11:06:41 db23 ntpd[30870]: Listening on interface wildcard, 
>::#123 Disabled
> Oct 22 11:06:41 db23 ntpd[30870]: Listening on interface lo, ::1#123 Enabled
> Oct 22 11:06:41 db23 ntpd[30870]: Listening on interface bond1, 
> fe80::21e:c9ff:feb0:d128#123 Enabled
> Oct 22 11:06:41 db23 ntpd[30870]: Listening on interface bond0, 
> fe80::215:17ff:fe7d:2a90#123 Enabled
> Oct 22 11:06:41 db23 ntpd[30870]: Listening on interface lo, 
> 127.0.0.1#123 Enabled
> Oct 22 11:06:41 db23 ntpd[30870]: Listening on interface bond0, 
> 10.10.16.101#123 Enabled
> Oct 22 11:06:41 db23 ntpd[30870]: Listening on interface bond1, 
> 10.10.20.101#123 Enabled
> Oct 22 11:06:41 db23 ntpd[30870]: kernel time sync status 0040
> Oct 22 11:06:41 db23 ntpd[30870]: frequency initialized 0.000 PPM from 
> /etc/ntp/drift
> Oct 22 11:09:59 db23 ntpd[30870]: synchronized to LOCAL(0), stratum 10
> Oct 22 11:09:59 db23 ntpd[30870]: kernel time sync enabled 0001
>
>
> These are debug messages:
>
> Starting ntpd: ntpd 4.2.2p1 at 1.1570-o Tue Aug 21 17:51:27 UTC 2007 (1)
> addto_syslog: precision = 1.000 usec
> create_sockets(123)
> addto_syslog: ntp_io: estimated max descriptors: 1024, initial socket 
> boundary: 16
> bind() fd 16, family 2, port 123, addr 0.0.0.0, flags=9
> Added addr 0.0.0.0 to list of addresses
> addto_syslog: Listening on interface wildcard, 0.0.0.0#123 Disabled
> bind() fd 17, family 10, port 123, addr ::, flags=1
> Added addr :: to list of addresses
> addto_syslog: Listening on interface wildcard, ::#123 Disabled
> bind() fd 18, family 10, port 123, addr ::1, flags=1
> Added addr ::1 to list of addresses
> addto_syslog: Listening on interface lo, ::1#123 Enabled
> bind() fd 19, family 10, port 123, addr fe80::21e:c9ff:feb0:d128, flags=1
> Added addr fe80::21e:c9ff:feb0:d128 to list of addresses
> addto_syslog: Listening on interface bond1, fe80::21e:c9ff:feb0:d128#123 
> Enabled
> bind() fd 20, family 10, port 123, addr fe80::215:17ff:fe7d:2a90, flags=1
> Added addr fe80::215:17ff:fe7d:2a90 to list of addresses
> addto_syslog: Listening on interface bond0, fe80::215:17ff:fe7d:2a90#123 
> Enabled
> bind() fd 21, family 2, port 123, addr 127.0.0.1, flags=5
> Added addr 127.0.0.1 to list of addresses
> addto_syslog: Listening on interface lo, 127.0.0.1#123 Enabled
> bind() fd 22, family 2, port 123, addr 10.10.16.101, flags=25
> Added addr 10.10.16.101 to list of addresses
> addto_syslog: Listening on interface bond0, 10.10.16.101#123 Enabled
> bind() fd 23, family 2, port 123, addr 10.10.20.101, flags=25
> Added addr 10.10.20.101 to list of addresses
> addto_syslog: Listening on interface bond1, 10.10.20.101#123 Enabled
> init_io: maxactivefd 23
> local_clock: time 0 base 0.000000 offset 0.000000 freq 0.000 state 0
> key_expire: at 0
> peer_clear: at 0 next 1 assoc ID 5730 refid INIT
> newpeer: 10.10.16.101->10.10.16.65 mode 3 vers 4 poll 6 10 flags 0x201 
> 0x1 ttl 0 key 00000000
> key_expire: at 0
> peer_clear: at 0 next 2 assoc ID 5731 refid INIT
> newpeer: 10.10.16.101->10.10.16.64 mode 3 vers 4 poll 6 10 flags 0x201 
> 0x1 ttl 0 key 00000000
> key_expire: at 0
> peer_clear: at 0 next 3 assoc ID 5732 refid INIT
> newpeer: 127.0.0.1->127.127.1.0 mode 3 vers 4 poll 6 10 flags 0x1021 0x1 
> ttl 0 key 00000000
> addto_syslog: frequency initialized 0.000 PPM from /etc/ntp/drift
> local_clock: time 0 base 0.000000 offset 0.000000 freq 0.000 state 1
> report_event: system event 'event_restart' (0x01) status 'sync_alarm, 
> sync_unspec, 1 event, event_unspec' (0xc010)
> transmit: at 1 10.10.16.101->10.10.16.65 mode 3
> auth_agekeys: at 1 keys 1 expired 0
> timer: refresh ts 0
> transmit: at 2 10.10.16.101->10.10.16.64 mode 3
> refclock_transmit: at 3 127.127.1.0
> refclock_receive: at 3 127.127.1.0
> peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, 
> event_reach' (0x8014)
> refclock_sample: n 1 offset 0.000000 disp 0.010000 jitter 0.000001
> clock_filter: n 1 off 0.000000 del 0.000000 dsp 7.937500 jit 0.000001, age 0
> transmit: at 3 10.10.16.101->10.10.16.65 mode 3
> transmit: at 4 10.10.16.101->10.10.16.64 mode 3
> transmit: at 5 10.10.16.101->10.10.16.65 mode 3
> transmit: at 6 10.10.16.101->10.10.16.64 mode 3
> transmit: at 7 10.10.16.101->10.10.16.65 mode 3
> transmit: at 8 10.10.16.101->10.10.16.64 mode 3
> transmit: at 9 10.10.16.101->10.10.16.65 mode 3
> transmit: at 10 10.10.16.101->10.10.16.64 mode 3
> transmit: at 11 10.10.16.101->10.10.16.65 mode 3
> transmit: at 12 10.10.16.101->10.10.16.64 mode 3
> transmit: at 13 10.10.16.101->10.10.16.65 mode 3
> transmit: at 14 10.10.16.101->10.10.16.64 mode 3
> transmit: at 15 10.10.16.101->10.10.16.65 mode 3
> transmit: at 16 10.10.16.101->10.10.16.64 mode 3
> transmit: at 17 10.10.16.101->10.10.16.65 mode 3
> transmit: at 18 10.10.16.101->10.10.16.64 mode 3
> auth_agekeys: at 60 keys 1 expired 0
> transmit: at 65 10.10.16.101->10.10.16.64 mode 3
> transmit: at 67 10.10.16.101->10.10.16.65 mode 3
> refclock_transmit: at 68 127.127.1.0
> refclock_receive: at 68 127.127.1.0
> refclock_sample: n 1 offset 0.000000 disp 0.010000 jitter 0.000001
> clock_filter: n 2 off 0.000000 del 0.000000 dsp 3.937744 jit 0.000001, age 0
> auth_agekeys: at 120 keys 1 expired 0
> transmit: at 131 10.10.16.101->10.10.16.64 mode 3
> refclock_transmit: at 133 127.127.1.0
> refclock_receive: at 133 127.127.1.0
> refclock_sample: n 1 offset 0.000000 disp 0.010000 jitter 0.000001
> clock_filter: n 3 off 0.000000 del 0.000000 dsp 1.937988 jit 0.000001, age 0
> transmit: at 133 10.10.16.101->10.10.16.65 mode 3
> auth_agekeys: at 180 keys 1 expired 0
> transmit: at 195 10.10.16.101->10.10.16.64 mode 3
> transmit: at 197 10.10.16.101->10.10.16.65 mode 3
> refclock_transmit: at 198 127.127.1.0
> refclock_receive: at 198 127.127.1.0
> refclock_sample: n 1 offset 0.000000 disp 0.010000 jitter 0.000001
> clock_filter: n 4 off 0.000000 del 0.000000 dsp 0.938171 jit 0.000001, age 0
> report_event: system event 'event_peer/strat_chg' (0x04) status 
> 'sync_alarm, sync_local_proto, 2 events, event_restart' (0xc521)
> addto_syslog: synchronized to LOCAL(0), stratum 10
> clock_update: at 198 assoc 3
> local_clock: assocID 5732 offset 0.000000000 freq 0.000 state 1
> local_clock: time 198 base 0.000000 offset 0.000000 freq 0.000 state 4
> addto_syslog: kernel time sync enabled 0001
> local_clock: mu 198 jitr 0.000001 freq 0.000 stab 0.000000 poll 6 count 6
> report_event: system event 'event_sync_chg' (0x03) status 'leap_none, 
> sync_local_proto, 3 events, event_peer/strat_chg' (0x534)
> crypto_update: update ts 3496759799
> report_event: system event 'event_peer/strat_chg' (0x04) status 
> 'leap_none, sync_local_proto, 4 events, event_sync_chg' (0x543)
> auth_agekeys: at 240 keys 1 expired 0
> transmit: at 258 10.10.16.101->10.10.16.64 mode 3
> refclock_transmit: at 261 127.127.1.0
> refclock_receive: at 261 127.127.1.0
> refclock_sample: n 1 offset 0.000000 disp 0.010000 jitter 0.000001
> clock_filter: n 5 off 0.000000 del 0.000000 dsp 0.438279 jit 0.000001, age 0
> clock_update: at 261 assoc 3
> local_clock: assocID 5732 offset 0.000000000 freq 0.000 state 4
> local_clock: time 261 base 0.000000 offset 0.000000 freq 0.000 state 4
> local_clock: mu 63 jitr 0.000001 freq 0.000 stab 0.000000 poll 6 count 12
> transmit: at 262 10.10.16.101->10.10.16.65 mode 3
> auth_agekeys: at 300 keys 1 expired 0
> transmit: at 323 10.10.16.101->10.10.16.64 mode 3
> refclock_transmit: at 326 127.127.1.0
> refclock_receive: at 326 127.127.1.0
> refclock_sample: n 1 offset 0.000000 disp 0.010000 jitter 0.000001
> clock_filter: n 6 off 0.000000 del 0.000000 dsp 0.188362 jit 0.000001, age 0
> clock_update: at 326 assoc 3
> local_clock: assocID 5732 offset 0.000000000 freq 0.000 state 4
> local_clock: time 326 base 0.000000 offset 0.000000 freq 0.000 state 4
> local_clock: mu 65 jitr 0.000001 freq 0.000 stab 0.000000 poll 6 count 18
> transmit: at 327 10.10.16.101->10.10.16.65 mode 3
>
>




More information about the questions mailing list