Re: [ntp:questions] NTPQ -P shows both IP and DNS name (parsing problem)
вторник, 20 июня 2017 г., 19:38:53 UTC+3 пользователь David Woolley написал: > I think you are expected to use the relevant management request > directly, rather than parse output intended for humans. That would > avoid process startup, filtering, and DNS costs. What does it mean to “use the relevant management request directly”? I’m new to NTP and Linux and this phrase is not clear to me. If it makes any difference, my program is written on Python and running under Raspbian OS. ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
[ntp:questions] NTPQ -P shows both IP and DNS name (parsing problem)
Hello everyone, The software developed by me uses ntpq -p to periodically (every 10 seconds) check ntpd time syncing status. ntpq output is parsed and fields “peer”, “refid” and “offset” are extracted by index. This works fine until some strange peer appears in the list for which both IP and DNS name are returned: remote refid st t when poll reach delay offset jitter == 0.debian.pool.n .POOL. 16 p-800.0000.000 0.002 1.debian.pool.n .POOL. 16 p-800.0000.000 0.002 2.debian.pool.n .POOL. 16 p-800.0000.000 0.002 3.debian.pool.n .POOL. 16 p-800.0000.000 0.002 LOCAL(0).LOCL. 10 l 328 100.0000.000 0.002 *193.11.114.43 ( 75.17.28.47 2 u887 29.118 -0.185 2.276 5.20.0.20 193.219.61.110 2 u787 82.7140.315 0.717 -Time100.Stupi.S .PPS.1 u887 29.916 -2.316 2.894 +ntp2.ivlan.net 194.190.168.12 u8875.426 -0.772 2.666 +ntp1.ivlan.net 194.190.168.12 u8878.8400.888 1.217 bagnikita.com 89.109.251.242 u1877.504 -1.115 1.227 78.140.251.2194.190.168.12 u187 14.4410.937 1.559 mx2.volgaship.c 131.188.3.2232 u 1083 13.515 -0.317 0.939 See the line starting with “*193.11.114.43 (“ If I run “ntpq -pw”, then the output is the following: remote refid st t when poll reach delay offset jitter == 0.debian.pool.ntp.org .POOL. 16 p-800.0000.000 0.002 1.debian.pool.ntp.org .POOL. 16 p-800.0000.000 0.002 2.debian.pool.ntp.org .POOL. 16 p-800.0000.000 0.002 3.debian.pool.ntp.org .POOL. 16 p-800.0000.000 0.002 LOCAL(0).LOCL. 10 l 588 2000.0000.000 0.002 -193.11.114.43 (tor1.mdfnet.se) 75.17.28.47 2 u48 77 32.7371.864 0.675 -5.20.0.20 193.219.61.110 2 u38 77 84.743 -0.631 0.543 *Time100.Stupi.SE .PPS.1 u48 77 30.9451.135 1.137 +ntp2.ivlan.net 194.190.168.12 u48 779.2371.225 0.860 +ntp1.ivlan.net 194.190.168.12 u48 779.0851.165 1.026 -bagnikita.com 89.109.251.242 u78 377.879 -0.385 0.591 +78.140.251.2194.190.168.12 u78 37 14.3240.418 1.500 -mx2.volgaship.com 131.188.3.2232 u68 37 13.515 -0.317 1.479 See the line starting with “-193.11.114.43 (tor1.mdfnet.se)” This strange peer breaks extracting fields by index. For the above example it extracts “(“ as “refid” value instead of “75.17.28.47” and “29.118” as “offset” value instead of “-0.185”. ntpq version is 4.2.8p10@1.3728-o Mon May 8 10:30:41 UTC 2017 (1) Is this behaviour a bug or a feature? Kind regards, Roman Mescheryakov ___ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
