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[TIGGE #LGY-600646]: Re: Missing fields from CMA

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  • Subject: [TIGGE #LGY-600646]: Re: Missing fields from CMA
  • Date: Mon, 07 May 2007 11:17:31 -0600
YangXin,

We made time-series plots of the load average on
tigge-ldm.cma.gov.cn and the number of LDM connections.
The plots are attached.

The spikes in the number of connections correlate with LDM
log file messages about problems resolving hostnames into
IP addresses (DNS problems).  Because the LDM makes great
use of name resolution, it is important that the resolution
be fast.  We suggest that you add the following entries to
the file "/etc/hosts" so that the resolution will be fast
and not depend on your name server (which appears to be
unavailable sometimes):

150.163.141.243    mopora.cptec.inpe.br
193.61.196.74      tigge-ldm.ecmwf.int
128.117.64.209     ultrazone.ucar.edu
128.117.149.64     rtstats.unidata.ucar.edu

Alternatively, you could install a caching name-server
on tigge-ldm.cma.gov.cn.

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: LGY-600646
Department: Support IDD TIGGE
Priority: Normal
Status: Closed

Attachment: connections.png
Description: PNG image

Attachment: load.png
Description: PNG image