> >From: Ramon Bastiaans <ramon.bastia...@sara.nl> >To: Cameron Spitzer <cspit...@nvidia.com> >Cc: "ganglia-general@lists.sourceforge.net" ><ganglia-general@lists.sourceforge.net> >Sent: Fri, February 26, 2010 9:14:58 AM >Subject: Re: [Ganglia-general] replaced a host, new host not seen > >> > > > > >On 02/26/2010 02:46 AM, Cameron Spitzer wrote: > >>> >> >>Bernard Li wrote: >> >>Same hostname too I presume? On gmetad, your hosts show up with >>>hostnames, correct? >>> >>Yes, same hostname. >> >>Is it perhaps showing up in the gmetad/web by it's IP address in stead >of it's hostname? That might indicate a DNS/hostname issue. > >>Also make sure the newly replaced gmond host is not set to "mute" in >the gmond.conf > > > >>>Telnet from the master to the new host gives an XML document, same as >>>>the old one. >>>> >>>What I would test is telnet (or nc) from master to _another_ host and >>>make sure that it has metrics from the "new" host. >>> >>I don't understand that at all. Host A is running gmetad. >>>>Host B (gmond) is not getting graphed, even though it sends XML. >>>>Hosts C through W are working fine. >> >>>>How would telnet from A to C tell me what's wrong with B? >> >>When using multicast, all other gmond's contain the information of the >other gmond's. Since you are using unicast that is not the case here. > > >Why >>would host C know anything about host B? >>>>Should any gmond host have information about all the other gmond hosts? >>>>In any case, the telnet output is the same from B and from C. >>>>There is no reference to any hosts in it. >> >> >>Are you using multicast (default) or unicast?\ >>> >>Unicast. >> >>Is the route from gmond host B to gmetad host A set correctly? Perhaps >the gmond traffic is getting sent over the wrong interface. > >>When in doubt I tend to use tcpdump myself to verify the traffic is >getting sent. >
Also, just to better understand the situation, what is the exact setup? Is one of the "gmond"s designated as a collector? Or do all "gmond"s carry all metrics from all hosts? Which "gmond" is queried by "gmetad" (snippet from config file)? You should telnet/nc to that "gmond" and check whether it has current metrics from "B". Cheers Martin ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Ganglia-general mailing list Ganglia-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-general
