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For what it's worth, it appears to me that the machine conduit.ncep.noaa.gov is not running one of the services used to keep the time accurate (either ntp or chrony depending on the installation) or perhaps one of these services is running, but can't reach a server to sync with because of firewall rules. Here are a few articles that might help you determine if ntp or chrony is running, and how to get one or the other set up and running if it's not. https://www.tecmint.com/install-chrony-in-centos-ubuntu-linux/ https://www.cyberciti.biz/faq/linux-unix-bsd-is-ntp-client-working/ https://www.techbrown.com/sync-time-timezone-centos-7/ Thanks for looking into the issue, and good luck! Pete <http://www.weather.com/tv/shows/wx-geeks/video/the-incredible-shrinking-cold-pool>----- Pete Pokrandt - Systems Programmer UW-Madison Dept of Atmospheric and Oceanic Sciences 608-262-3086 - poker@xxxxxxxxxxxx ________________________________ From: Anne Myckow - NOAA Federal <anne.myckow@xxxxxxxx> Sent: Monday, June 22, 2020 7:31 AM To: Pete Pokrandt <poker@xxxxxxxxxxxx> Cc: Dustin Sheffler - NOAA Federal <dustin.sheffler@xxxxxxxx>; Carissa Klemmer - NOAA Federal <carissa.l.klemmer@xxxxxxxx>; _NCEP.List.pmb-dataflow <ncep.list.pmb-dataflow@xxxxxxxx>; support-conduit@xxxxxxxxxxxxxxxx <conduit@xxxxxxxxxxxxxxxx>; Unidata CONDUIT Support <support-conduit@xxxxxxxxxxxxxxxx> Subject: Re: [Ncep.list.pmb-dataflow] [conduit] NCEP CONDUIT Outage planned Thanks Pete. We will look into it. On Fri, Jun 19, 2020 at 3:40 PM Pete Pokrandt <poker@xxxxxxxxxxxx<mailto:poker@xxxxxxxxxxxx>> wrote: Just an FYI the CONDUIT latency times continue to slowly increase. Unidata is seeing the same slowly increasing lags, so that suggests to me it is an issue with the source. I don't think we're actually getting data that much later, I think the clock has a slow drift on conduit.ncep.noaa.gov<http://conduit.ncep.noaa.gov>. We are not experiencing any real problems with this right now, but if the lag grows larger than 3600 seconds, I am concerned we will begin losing data, since (as I understand it) the ldm doesn't ask for data more than an hour old. Can you please have someone look into this at some point? Thanks, Pete [cid:172dc02655bcb971f162] <http://www.weather.com/tv/shows/wx-geeks/video/the-incredible-shrinking-cold-pool>----- Pete Pokrandt - Systems Programmer UW-Madison Dept of Atmospheric and Oceanic Sciences 608-262-3086 - poker@xxxxxxxxxxxx<mailto:poker@xxxxxxxxxxxx> ________________________________ From: Dustin Sheffler - NOAA Federal <dustin.sheffler@xxxxxxxx<mailto:dustin.sheffler@xxxxxxxx>> Sent: Friday, June 5, 2020 1:50 PM To: Pete Pokrandt <poker@xxxxxxxxxxxx<mailto:poker@xxxxxxxxxxxx>> Cc: Carissa Klemmer - NOAA Federal <carissa.l.klemmer@xxxxxxxx<mailto:carissa.l.klemmer@xxxxxxxx>>; Anne Myckow - NOAA Federal <anne.myckow@xxxxxxxx<mailto:anne.myckow@xxxxxxxx>>; _NCEP.List.pmb-dataflow <ncep.list.pmb-dataflow@xxxxxxxx<mailto:ncep.list.pmb-dataflow@xxxxxxxx>> Subject: Re: [Ncep.list.pmb-dataflow] [conduit] NCEP CONDUIT Outage planned Hi Pete, Thank you for passing along the information about the increasing lag times your seeing for CONDUIT ingest. That is a very interesting and telling graph for a slowly worsening issue. We will investigate and let you know what we find. -Dustin On Tue, Jun 2, 2020 at 5:15 PM 'Pete Pokrandt' via _NCEP list.pmb-dataflow <ncep.list.pmb-dataflow@xxxxxxxx<mailto:ncep.list.pmb-dataflow@xxxxxxxx>> wrote: Carissa, Anne, Thanks so much for keeping us updated on these outages. FYI I think there is a slow clock drift on the CONDUIT source machine conduit.ncep.noaa.gov<http://conduit.ncep.noaa.gov>. I'm seeing the lags slowly increasing at my ingest site, and I see the same slow increase on conduit.unidata.ucar.edu<http://conduit.unidata.ucar.edu>. I don't see the same drift on data feeds from other sources. Maybe the conduit.ncep.noaa.gov<http://conduit.ncep.noaa.gov> isn't running ntpd to keep the time accurate? https://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?CONDUIT+idd-agg.aos.wisc.edu https://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_nc?CONDUIT+conduit.unidata.ucar.edu [cid:172dc02655bcb971f161] Thanks, Pete <http://www.weather.com/tv/shows/wx-geeks/video/the-incredible-shrinking-cold-pool>----- Pete Pokrandt - Systems Programmer UW-Madison Dept of Atmospheric and Oceanic Sciences 608-262-3086 - poker@xxxxxxxxxxxx<mailto:poker@xxxxxxxxxxxx> ________________________________ From: conduit <conduit-bounces@xxxxxxxxxxxxxxxx<mailto:conduit-bounces@xxxxxxxxxxxxxxxx>> on behalf of Anne Myckow - NOAA Federal via conduit <conduit@xxxxxxxxxxxxxxxx<mailto:conduit@xxxxxxxxxxxxxxxx>> Sent: Monday, June 1, 2020 1:00 PM To: Carissa Klemmer - NOAA Federal <carissa.l.klemmer@xxxxxxxx<mailto:carissa.l.klemmer@xxxxxxxx>> Cc: support-conduit@xxxxxxxxxxxxxxxx<mailto:support-conduit@xxxxxxxxxxxxxxxx> <conduit@xxxxxxxxxxxxxxxx<mailto:conduit@xxxxxxxxxxxxxxxx>>; _NCEP.List.pmb-dataflow <ncep.list.pmb-dataflow@xxxxxxxx<mailto:ncep.list.pmb-dataflow@xxxxxxxx>> Subject: Re: [conduit] [Ncep.list.pmb-dataflow] NCEP CONDUIT Outage planned Hello, Wanted to let you know that the 6/3 outage has been moved to 6/8, same time . Please let us know if you have any questions, thanks. Anne On Thu, May 28, 2020 at 8:23 PM Carissa Klemmer - NOAA Federal <carissa.l.klemmer@xxxxxxxx<mailto:carissa.l.klemmer@xxxxxxxx>> wrote: Hello - We have 2 dates of maintenance that I'd like to make you aware of, both of which may impact your ability to pull conduit data. 6/1 between 13-15Z 6/3 between 13-15Z Expect that the outage will last the entire 2 hours. Data will be queued up to backfill anything that was missed during the outage. If you have any questions please ask the dataflow team. Thanks, Carissa Klemmer NCEP Central Operations IDSB Branch Chief 301-683-3835 _______________________________________________ Ncep.list.pmb-dataflow mailing list Ncep.list.pmb-dataflow@xxxxxxxxxxxxxxxxxxxx<mailto:Ncep.list.pmb-dataflow@xxxxxxxxxxxxxxxxxxxx> https://www.lstsrv.ncep.noaa.gov/mailman/listinfo/ncep.list.pmb-dataflow -- Anne Myckow Dataflow Team Lead NWS/NCEP/NCO 301-683-3825 _______________________________________________ Ncep.list.pmb-dataflow mailing list Ncep.list.pmb-dataflow@xxxxxxxxxxxxxxxxxxxx<mailto:Ncep.list.pmb-dataflow@xxxxxxxxxxxxxxxxxxxx> https://www.lstsrv.ncep.noaa.gov/mailman/listinfo/ncep.list.pmb-dataflow -- Dustin Sheffler NCEP Central Operations - Dataflow <tel:%28301%29%20683-1400>5830 University Research Court, Rm 1030 College Park, Maryland 20740 Office: (301) 683-3827<tel:%28301%29%20683-1400> <tel:%28301%29%20683-1400> -- Anne Myckow Dataflow Team Lead NWS/NCEP/NCO 301-683-3825
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