Hi Jorge

I had the same problem some time ago on a Linux cluster
with dual Gigabit Ethernet networks.
The routing tables were wrong, mixing the traffic
of both networks.
Fixing the (static) routing tables solved the problem.
The output of "route" on the nodes should tell something about it.

Would this be your case?

I hope this helps.
Gus Correa
---------------------------------------------------------------------
Gustavo Correa
Lamont-Doherty Earth Observatory - Columbia University
Palisades, NY, 10964-8000 - USA
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Jorge Medina wrote:
> I am using Ganglia 3.1.2 on Solaris SPARC
>  
> I have the following problem.
>     My cluster has 'n' nodes but Ganglia Web reports my cluster as 
> having '2n' nodes.
>  
>     Basically each node is reported twice, one using its IP address and 
> another user its hostname.
>     Half of them appear as "down". (In other words, either the node with 
> the IP address or the node with the hostname appears as  "down").
>   
>     I checked the directories where RRDtool stores the data. There are 
> only directories using the hostname, no directory has the name of an IP 
> address.
>     Therefore, I think that gmetad is storing the data as expected. I 
> guess the problem  occurs in the PHP layer while generating the pages.
>  
>     What would cause Ganglia Web to report '2n' nodes ?
>  
> -Jorge
>  
> 
> 
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