This happens generally if you are not using DNS and the /etc/hosts file is
inconsisent across the machines. Please let us know if that is true.

--Nitin

On Mon, Apr 19, 2010 at 11:26 PM, <[email protected]> wrote:

> Hi everybody,
>
> I write this here searching for your help: I've a problem with my
> hostnames,
> specifically with how ganglia determines the hostnames, and graphs. In my
> cluster view, some machines appears with his hostname, and others with his
> IP
> address; when I execute on the machine called oceano "gstat -ma" it
> returns:
>
> 192.168.202.250:8
> 192.168.202.5:2
> 192.168.202.2:2
> tetis.macc.unican.es:2
> mar.macc.unican.es:1
>
> When I execute "telnet localhost 8649 |grep 192" or "telnet
> oceano.macc.unican.es 8649 |grep 192" or "telnet 192.168.202.250 8649
> |grep
> 192" or "telnet 193.144.202.250 8649 |grep 192"(the IP addresses for the
> machine oceano.macc.unican.es are 192.168.202.250 and 193.144.202.250) it
> returns:
>
> <HOST NAME="192.168.202.250" IP="192.168.202.250" REPORTED="1271696852"
> TN="1"
> TMAX="20" DMAX="0" LOCATION="unspecified" GMOND_STARTED="1271689851">
> <HOST NAME="192.168.202.2" IP="192.168.202.2" REPORTED="1271696846" TN="7"
> TMAX="20" DMAX="0" LOCATION="unspecified" GMOND_STARTED="1271689175">
> <HOST NAME="tetis.macc.unican.es" IP="192.168.202.200"
> REPORTED="1271696850"
> TN="2" TMAX="20" DMAX="0" LOCATION="unspecified"
> GMOND_STARTED="1271689037">
> <HOST NAME="mar.macc.unican.es" IP="192.168.202.111" REPORTED="1271696846"
> TN="7" TMAX="20" DMAX="0" LOCATION="unspecified"
> GMOND_STARTED="1271689145">
> <HOST NAME="192.168.202.5" IP="192.168.202.5" REPORTED="1271696850" TN="3"
> TMAX="20" DMAX="0" LOCATION="unspecified" GMOND_STARTED="1271693064">
> Connection closed by foreign host.
>
> If I execute on the machine called tetis "telnet localhost 8649 | grep
> 192", it
> returns:
>
> <HOST NAME="oceano.macc.unican.es" IP="192.168.202.250"
> REPORTED="1271697392"
> TN="9" TMAX="20" DMAX="0" LOCATION="unspecified"
> GMOND_STARTED="1271689851">
> <HOST NAME="tetis.macc.unican.es" IP="192.168.202.200"
> REPORTED="1271697400"
> TN="0" TMAX="20" DMAX="0" LOCATION="unspecified"
> GMOND_STARTED="1271689037">
> <HOST NAME="192.168.202.2" IP="192.168.202.2" REPORTED="1271697396" TN="5"
> TMAX="20" DMAX="0" LOCATION="unspecified" GMOND_STARTED="1271689175">
> <HOST NAME="mar.macc.unican.es" IP="192.168.202.111" REPORTED="1271697386"
> TN="15" TMAX="20" DMAX="0" LOCATION="unspecified"
> GMOND_STARTED="1271689145">
> <HOST NAME="192.168.202.5" IP="192.168.202.5" REPORTED="1271697394" TN="6"
> TMAX="20" DMAX="0" LOCATION="unspecified" GMOND_STARTED="1271698330">
> Connection closed by foreign host.
>
> And if I execute on the same machine "gstat -ma", it returns:
>
> oceano.macc.unican.es:8
> 192.168.202.2:2
> tetis.macc.unican.es:2
> 192.168.202.5:2
> mar.macc.unican.es:1
>
> Where you can see that the hostname for oceano appears correctly.
>
> Any idea?
>
> Thanks for your time
>
> ICV
>
>
>
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