Hi Branimir,

 apparently Rick pushed you into the right direction already :-) Just a
few comments

Martin

--- Branimir Ackovic <[EMAIL PROTECTED]> wrote:

> 
> Thank You Rick and Martin for quick response!
> 
> I allready tried configuration that Rick suggest, but it doesn't
> work. In that configuration I see only one node per data_source
> (the last one). One week ago,  Michael Chang helped me to solve
> problem with this configuration:
> 
> data_source "AEGIS01-PHY-SCL1" 147.91.83.201
> data_source "AEGIS01-PHY-SCL2" 147.91.83.202
> data_source "AEGIS01-PHY-SCL3" 147.91.83.203
> .......
> 
> If I understand, Martin suggest that I need two machines with
> gmetad (one for each data_source). Now I have gmetad only on
> server with web frontend
> 
> (se.phy.bg.ac.yu). 
>

 that is totally fine. You only need one "gmetad" running. Your problem
was that the nodes *within* your two *clusters* did not communicate
correctly. MCs setup allowed you to query each node individually, but
you lost the cluster concept that way.

> It is true that  the machines in the two groups do not see each
> other. Even in  same group. I tried:
> 
> [EMAIL PROTECTED] root]# telnet localhost 8649 | grep grid
> Connection closed by foreign host.
> [EMAIL PROTECTED] root]#                  
> 
> Both machines ce and grid are in the same data_source with same
> gmond.conf files. As you said, Martin, I found the problem, but
> I don't found solution 
> for them. :(
>

 That was the most important step :-). Your "gmond.conf" files look
like a multicast setup, but apparently sometning went wrong. Possible
causes:

- no route for the multicast IP
- your switch does not like IGMP
- also, both of your clusters were talking on the same port. This can
be a problem with MC.

 So, going unicast is the right way to go in my opinion. Advantages
are:

- your networking infrastructure will not screw you up
- less network traffic. In a working multicast network you will have
N*N messages going around. In a large cluster that can be a lot of
traffic just for Ganglia.

Cheers
Martin


------------------------------------------------------
Martin Knoblauch
email: k n o b i AT knobisoft DOT de
www:   http://www.knobisoft.de

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