Mam system, na którym nie jest uruchomiony program ntpd, na którym próbuję zaktualizować zegar za pomocą narzędzia ntpdate. System jest urządzeniem, które wydaje się być oparte na CentOS 6.
Kiedy biegnę ntpdate 0.pool.ntp.org
, dostaję:
8 Sep 17:52:05 ntpdate[7445]: no server suitable for synchronization found
Jednak kiedy to robię ntpdate -d 0.pool.ntp.org
, otrzymuję:
8 Sep 17:55:14 ntpdate[9499]: ntpdate 4.2.2p1@1.1570-o Fri Nov 18 13:21:21 UTC 2011 (1)
Looking for host 0.pool.ntp.org and service ntp
host found : 4.53.160.75
transmit(4.53.160.75)
receive(4.53.160.75)
transmit(4.53.160.75)
receive(4.53.160.75)
transmit(4.53.160.75)
receive(4.53.160.75)
transmit(4.53.160.75)
receive(4.53.160.75)
transmit(4.53.160.75)
transmit(64.16.214.60)
receive(64.16.214.60)
transmit(64.16.214.60)
receive(64.16.214.60)
transmit(64.16.214.60)
receive(64.16.214.60)
transmit(64.16.214.60)
receive(64.16.214.60)
transmit(64.16.214.60)
transmit(54.236.224.171)
receive(54.236.224.171)
transmit(54.236.224.171)
receive(54.236.224.171)
transmit(54.236.224.171)
receive(54.236.224.171)
transmit(54.236.224.171)
receive(54.236.224.171)
transmit(54.236.224.171)
transmit(50.22.155.163)
receive(50.22.155.163)
transmit(50.22.155.163)
receive(50.22.155.163)
transmit(50.22.155.163)
receive(50.22.155.163)
transmit(50.22.155.163)
receive(50.22.155.163)
transmit(50.22.155.163)
server 4.53.160.75, port 123
stratum 2, precision -23, leap 00, trust 000
refid [4.53.160.75], delay 0.03160, dispersion 0.00005
transmitted 4, in filter 4
reference time: d7b867d0.f9841075 Mon, Sep 8 2014 17:37:20.974
originate timestamp: d7b86c03.b6a49dae Mon, Sep 8 2014 17:55:15.713
transmit timestamp: d7b86c02.7e12a51e Mon, Sep 8 2014 17:55:14.492
filter delay: 0.03189 0.03188 0.03172 0.03160
0.00000 0.00000 0.00000 0.00000
filter offset: 1.218061 1.217856 1.218023 1.217968
0.000000 0.000000 0.000000 0.000000
delay 0.03160, dispersion 0.00005
offset 1.217968
server 64.16.214.60, port 123
stratum 2, precision -23, leap 00, trust 000
refid [64.16.214.60], delay 0.04886, dispersion 0.00006
transmitted 4, in filter 4
reference time: d7b86425.55948a73 Mon, Sep 8 2014 17:21:41.334
originate timestamp: d7b86c03.f7d91219 Mon, Sep 8 2014 17:55:15.968
transmit timestamp: d7b86c02.bed42c3c Mon, Sep 8 2014 17:55:14.745
filter delay: 0.04919 0.04892 0.04912 0.04886
0.00000 0.00000 0.00000 0.00000
filter offset: 1.210967 1.210879 1.210967 1.210836
0.000000 0.000000 0.000000 0.000000
delay 0.04886, dispersion 0.00006
offset 1.210836
server 54.236.224.171, port 123
stratum 3, precision -20, leap 00, trust 000
refid [54.236.224.171], delay 0.04878, dispersion 0.00011
transmitted 4, in filter 4
reference time: d7b864eb.b06fee7d Mon, Sep 8 2014 17:24:59.689
originate timestamp: d7b86c04.2b9d2547 Mon, Sep 8 2014 17:55:16.170
transmit timestamp: d7b86c02.f1e80bed Mon, Sep 8 2014 17:55:14.944
filter delay: 0.04977 0.04950 0.04878 0.04887
0.00000 0.00000 0.00000 0.00000
filter offset: 1.214091 1.214069 1.213755 1.213750
0.000000 0.000000 0.000000 0.000000
delay 0.04878, dispersion 0.00011
offset 1.213755
server 50.22.155.163, port 123
stratum 2, precision -23, leap 00, trust 000
refid [50.22.155.163], delay 0.07384, dispersion 0.00005
transmitted 4, in filter 4
reference time: d7b869c9.2b3f3d0b Mon, Sep 8 2014 17:45:45.168
originate timestamp: d7b86c04.75472e97 Mon, Sep 8 2014 17:55:16.458
transmit timestamp: d7b86c03.384a83b1 Mon, Sep 8 2014 17:55:15.219
filter delay: 0.07408 0.07414 0.07384 0.07387
0.00000 0.00000 0.00000 0.00000
filter offset: 1.214115 1.214122 1.214012 1.214069
0.000000 0.000000 0.000000 0.000000
delay 0.07384, dispersion 0.00005
offset 1.214012
8 Sep 17:55:15 ntpdate[9499]: step time server 4.53.160.75 offset 1.217968 sec
Na podstawie moich poprzednich wyszukiwań wynik ten (z różnymi liniami receive () i przesunięciem) sugeruje, że komunikuje się on poprawnie ze zdalnymi serwerami NTP (nie blokowanymi przez zaporę ogniową). Dlaczego więc nie aktualizuje mojego zegara po uruchomieniu?