Hello, I wonder if we could try and produce a more understandable, or, at least, definitive howto about the node names. So far, it remains a bit of a trial-and-error thing, bit for configs and the daemon startup sequence. I suppose it can be better understood if I poked long enough around the source code, but perhaps there are people here who already grok that code well enough to spell it out?
Let's take an example. I have a 3-cluster grid (the clusters are actually groups of machines pertaining to separate web app deployments). One machine is a web frontend with gmetad, which also runs a gmond on itself, representing a Utility cluster, and two other clusters are groups of 5 machines, all with gmond, one collector gmond per group. gmetad at the web frontend then polls the collector hosts. Everything works nicely (especially after the latest send_metadata value "discovery"). However, not all of the machines get represented by their symbolic names. Some do, and some seem to get stuck with IPs, which is inconvenient and confuses support personnel. This is what I have done to try t remedy the situation: - the web-frontend host has all monitored nodes IPs mapped to symbolic names in its /etc/hosts file, both FQDN and short name values per line - all FQDN actually resolve via DNS - every monitored node has its hostname set via normal OS means (FQDN in /etc/hostname, hostname -F /etc/hostname, FQDN and hostname in own /etc/hosts) - a complete ganglia restart has been done, with gmetad first up and all gmond instances up after that, starting with collector ones however, it resulted, as said above, in only partial symbolic representation the only thing that is missing from a completely nice setup here is that the reverse DNS zones are not in order; can that be the culprit? I would appreciate comments on this, also, perhaps someone from the developers could just concisely explain the actual mechanism of initial host identification to the grid/gmetad and how it could be reset? Best regards, -- Michael Bravo ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Ganglia-general mailing list Ganglia-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-general
