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20030418: UFRJ as a primary IDD redistribution point for Brazil (cont.)
- Subject: 20030418: UFRJ as a primary IDD redistribution point for Brazil (cont.)
- Date: Mon, 21 Apr 2003 17:43:17 -0600
>From: Tom Yoksas <address@hidden>
>Organization: UCAR/Unidata
>>Keywords: 200210011729.g91HTQ111931 LDM-6 IDD-Brazil
Hi David,
>I just did what you asked below, and please feel free to do the
>modifications you need.
Wonderful. As soon as I saw your message this morning, I logged onto
brisa and made the modifications. You are now up and running LDM-6.0.10
and reporting real time statistics. To take a look at the real time
statistics, you can look at:
http://www.unidata.ucar.edu/staff/chiz/rtstats
Click on the 'Statistics by Host' link and then on the
'brisa.meteoro.ufrj.br [ 6.0.10 ]' link. In the second page, you will
find entries for each type of data feed you are receiving.
The real time statistics have demonstrated that there is a problem with
the clock on your system: it is over an hour in the future. I verified
this by logging on to brisa and running 'date -u' while simultaneously
doing the same thing on a machine here in our office:
brisa.meteoro.ufrj.br:
[ldm@brisa ldm]$ date -u
Tue Apr 22 00:34:51 UTC 2003
thelma.ucar.edu:
/local/ldm% date -u
Mon Apr 21 23:33:42 GMT 2003
Would it be possible for you to reset the clock on brisa? I found that
running ntpdate from 'root's cron once-per-hour is usually sufficient
for keeping a system's clock set correctly. I know that RPN operates
at least one time server for each state in Brazil:
http://www.rnp.br/lang/cais_en/ntp/
so you do best to use the one in Rio:
ntp.pop-rj.rnp.br (200.159.254.173)
As per the RNP web page, you should send an email to notify them that
you are using this time server:
location:
PoP-RJ/Brazilian Research Network (RNP)
synchronization:
NTP V4 Secondary (stratum 2), IBM-RS6000/AIX
service area:
Brazil
access policy:
Open access to stratum 2 and stratum 3 NTP servers. Please, send an
e-mail to notify.
contact:
address@hidden
The ntpdate invocation I would setup if I had 'root' access on brisa is:
0 * * * * /usr/sbin/ntpdate ntp.pop-rj.rnp.br > /dev/null
>Glad to help.
I really appreciate your help in getting this setup and working properly!
Cheers,
Tom Yoksas
>From address@hidden Mon Apr 21 19:45:39 2003
Tom,
The clock skew was due some strange bug on ntpd service running on
brisa when it was last restarted (April the 16th). I had solved the issue
like you said, back when you did first ldm setup, only pointing to a local
ntp server (ntp.ufrj.br) instead of the one you mentioned.
The clock is adjusted now. Let me know if anything else is needed.
Best Regards,
David Garrana