Hi Khrist,
well that makes sense indeed.
All my VM's are running in a private cloud infrastructure so I have no control
over their network characteristics.
But still, for instance, in gmetad I am gathering the data from node1, and
node1's IP is in the same subnet as node2:
- node1 IP= x.x.x.169
- node2 IP= x.x.x.96
but in Ganglia frontend, I only get information from node1!!
Nevertheless, do I have to do any extra configuration to put multicast working?
Because I did nothing in the gmonds. I just installed ganglia and ganglia-gmond
and I left gmond.conf as default. Is this correct?
Cumprimentos / Best regards,
Cristóvão José Domingues Cordeiro
________________________________
From: Khrist Hansen [khrist.han...@gmail.com]
Sent: 20 March 2014 23:07
To: Cristovao Jose Domingues Cordeiro; ganglia-general@lists.sourceforge.net
Subject: RE: [Ganglia-general] multicast not working
I had the same problem due to multicast packets not being routed between
subnets.
Are your nodes on different subnets/VLANs?
There are some tools out there that will test multicast connectivity across
subnets. All that comes to mind for the moment is mping on AIX, but I know
there are more for the various OS platforms.
I had to use unicast in the end, but I am still working on my network
engineering team to enable multicast routing between subnets.
Hope that helps,
Khrist Hansen
From: Cristovao Jose Domingues Cordeiro [mailto:cristovao.corde...@cern.ch]
Sent: Thursday, March 20, 2014 10:42 AM
To: ganglia-general@lists.sourceforge.net
Subject: [Ganglia-general] multicast not working
Hi,
I'm trying to set the simplest of clusters with mcast. Basically I have one
gmetad.conf where I just did:
data_source "unspecified" node1
then, I have in one cloud, node1, node2, node3, node4 and node5.
All of these have default gmond installations with no changes in gmond.conf.
The problem is that in my frontend, I only get node1 and not the others.
Weren't they supposed to talk with each others and have all the metrics about
each others?
Thanks
Cumprimentos / Best regards,
Cristóvão José Domingues Cordeiro
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