We found we got leap seconds added on some systems over the weekend. There were no leap seconds planned ( http://www.usno.navy.mil/USNO/earth-orientation/leap-second-announcement), however some of our systems got one. We run our own s2/s3/s4 system, with only the s2s going to the Internet. We have about 20 servers defined there, but looking through the logs, I can't figure out which one(s) may have been advertising the leap second. I went through all our systems on Friday and Saturday to check for the leap bit, but had nothing, so it must have come out on Sunday. Anyone else run in to this, or have any further intel about servers that advertised the leap second? Cheers, Todd.
On Tue, Jul 2, 2013 at 7:23 AM, Todd S <todd@borked.ca> wrote:
We found we got leap seconds added on some systems over the weekend. There were no leap seconds planned ( http://www.usno.navy.mil/USNO/earth-orientation/leap-second-announcement), however some of our systems got one.
We run our own s2/s3/s4 system, with only the s2s going to the Internet. We have about 20 servers defined there, but looking through the logs, I can't figure out which one(s) may have been advertising the leap second. I went through all our systems on Friday and Saturday to check for the leap bit, but had nothing, so it must have come out on Sunday.
Anyone else run in to this, or have any further intel about servers that advertised the leap second?
Had a leap happen here on the 30th. My stratum 1 source is a CDMA timekeeper, I'll ping the operator of it and see if he knows anything or if it logged anything. It's probably not isolated at all since all my S2 machines have some diversity in alternate time sources but still took the leap second.
Cheers,
Todd.
-- "Genius might be described as a supreme capacity for getting its possessors into trouble of all kinds." -- Samuel Butler
On Tue, Jul 2, 2013 at 7:35 AM, Michael Loftis <mloftis@wgops.com> wrote:
Had a leap happen here on the 30th. My stratum 1 source is a CDMA timekeeper, I'll ping the operator of it and see if he knows anything or if it logged anything. It's probably not isolated at all since all my S2 machines have some diversity in alternate time sources but still took the leap second.
OK he's checked, nothing unusual in logs....data on the box matches NOAA site (16 leaps, 16 future) - and pool.ntp.org/scores thinks that it's all OK/well within norms. -- "Genius might be described as a supreme capacity for getting its possessors into trouble of all kinds." -- Samuel Butler
I had a quick look at the data, and only 5 of the servers that I was monitoring advertised a leap on June 30th - three in the US, one in Argentina and one in New Zealand. If Todd or Michael want, we can compare notes and see if they are peering with one of the servers that I spotted. David.
This might sound like an easy question, but how do you verify if a Red Hat box took a leap second? -Grant On Wed, Jul 3, 2013 at 3:25 AM, David Malone <David.Malone@nuim.ie> wrote:
I had a quick look at the data, and only 5 of the servers that I was monitoring advertised a leap on June 30th - three in the US, one in Argentina and one in New Zealand. If Todd or Michael want, we can compare notes and see if they are peering with one of the servers that I spotted.
David.
As far i can remember the ntp logs have that info... greap for leap pr leap second El jul 3, 2013 2:05 PM, "Grant Ridder" <shortdudey123@gmail.com> escribió:
This might sound like an easy question, but how do you verify if a Red Hat box took a leap second?
-Grant
On Wed, Jul 3, 2013 at 3:25 AM, David Malone <David.Malone@nuim.ie> wrote:
I had a quick look at the data, and only 5 of the servers that I was monitoring advertised a leap on June 30th - three in the US, one in Argentina and one in New Zealand. If Todd or Michael want, we can compare notes and see if they are peering with one of the servers that I spotted.
David.
Hi Grant, My Linux boxes have usually logged a message like: Jul 1 00:59:59 aturing kernel: [3812251.350269] Clock: inserting leap second 23:59:60 UTC This message is logged by the kernel, so you can see it in the output of dmesg - otherwise check in /var/log as it should have been logged to some one of the files there. David.
I saw alerts from Symmetricom about it for their NTP hardware, and got notified from Infoblox also. Relevant links: http://www.symmetricom.com/media/files/downloads/leap-second/S200_S250_SyncS... http://www.symmetricom.com/media/files/downloads/leap-second/S300_S350_SyncS... Regards, --dmr On Tue, Jul 2, 2013 at 10:23 AM, Todd S <todd@borked.ca> wrote:
We found we got leap seconds added on some systems over the weekend. There were no leap seconds planned ( http://www.usno.navy.mil/USNO/earth-orientation/leap-second-announcement), however some of our systems got one.
We run our own s2/s3/s4 system, with only the s2s going to the Internet. We have about 20 servers defined there, but looking through the logs, I can't figure out which one(s) may have been advertising the leap second. I went through all our systems on Friday and Saturday to check for the leap bit, but had nothing, so it must have come out on Sunday.
Anyone else run in to this, or have any further intel about servers that advertised the leap second?
Cheers,
Todd.
Subject: Leap Second Date: Tue, Jul 02, 2013 at 10:23:58AM -0400 Quoting Todd S (todd@borked.ca):
We found we got leap seconds added on some systems over the weekend. There were no leap seconds planned ( http://www.usno.navy.mil/USNO/earth-orientation/leap-second-announcement), however some of our systems got one.
We run our own s2/s3/s4 system, with only the s2s going to the Internet. We have about 20 servers defined there, but looking through the logs, I can't figure out which one(s) may have been advertising the leap second. I went through all our systems on Friday and Saturday to check for the leap bit, but had nothing, so it must have come out on Sunday.
Anyone else run in to this, or have any further intel about servers that advertised the leap second?
We did get an advisory from Infoblox about a bug in "NTP servers based on open source NTP" that would do just that. For Infoblox NIOS there was a hotfix, and Symmetricom also has a patch out. -- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 I think my career is ruined!
My S2s are Symmetricoms, so we may have a winner here. Cheers! On Tue, Jul 2, 2013 at 10:39 AM, Måns Nilsson <mansaxel@besserwisser.org>wrote:
Subject: Leap Second Date: Tue, Jul 02, 2013 at 10:23:58AM -0400 Quoting Todd S (todd@borked.ca):
We found we got leap seconds added on some systems over the weekend. There were no leap seconds planned ( http://www.usno.navy.mil/USNO/earth-orientation/leap-second-announcement ), however some of our systems got one.
We run our own s2/s3/s4 system, with only the s2s going to the Internet. We have about 20 servers defined there, but looking through the logs, I can't figure out which one(s) may have been advertising the leap second. I went through all our systems on Friday and Saturday to check for the leap bit, but had nothing, so it must have come out on Sunday.
Anyone else run in to this, or have any further intel about servers that advertised the leap second?
We did get an advisory from Infoblox about a bug in "NTP servers based on open source NTP" that would do just that. For Infoblox NIOS there was a hotfix, and Symmetricom also has a patch out.
-- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 I think my career is ruined!
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On Tue 2013-07-02T10:23:58 -0400, Todd S hath writ:
Anyone else run in to this, or have any further intel about servers that advertised the leap second?
David Malone has been monitoring the NTP pool for years. See his plots http://www.maths.tcd.ie/~dwmalone/time/leaps/ This time pool was much better than it has been. -- Steve Allen <sla@ucolick.org> WGS-84 (GPS) UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855 1156 High Street Voice: +1 831 459 3046 Lng -122.06015 Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m
participants (8)
-
David Malone -
David Ramsey -
Grant Ridder -
Michael Loftis -
Måns Nilsson -
QliX=D! [aka EHB] -
Steve Allen -
Todd S