Hi there, I just installed Clic Linux on a number of computers here and I'm having trouble with the Ganglia package. The installation instructions say that I should just be able to point my web browser at the master node and I will see stats about my cluster. Instead I get this error: There was an error collecting gmetad data: XML error: no element found at 1
I've been trying to figure out what's wrong and it seems like gmetad's child process is crashing when it tries to start up. Running the ps command shows these processes: root 13869 95.8 0.4 6136 4240 ? R 13:57 3:10 /usr/bin/perl -Tw /usr/sbin/gmetad root 13870 0.0 0.0 0 0 ? Z 13:57 0:00 [gmetad <defunct>] And top shows gmetad using 99.9% of one of my processors. Perhaps that's just normal though? Looking inside /var/log/ganglia/gmetad/gmetad.log I see this: no element found at line 1, column 0, byte 0 at /usr/lib/perl5/vendor_perl/5.8.0/i386-linux-thread-multi/XML/Parser.pm line 185 Looking at the gmetad script and adding a few print statements I've found that the child process is crashing inside the collect_data function, line 269: $p->parse($xml_data); The function looks like it is supposed to collect data for each source but I believe I only have one source as my /etc/gmetad_sources only contains this line: CLIC 10.0.0.199 8649 which is the internal ip address of my master node. Running lsof shows that several instances of gmond are up and running and listening on port 8649 and the perl script doesn't ever fail to connect, it just never gets past the parse part. A thing that strikes me as really odd though is that lsof also shows multiple connections from gmond on my master node to the ip 239.2.11.71 on port 8649. I'm kinda worried I've got some sort of trojan. So anyway, if anyone can shed some light on my problems it will be greatly appreciated. Oh, and this might help, here are the relevant rpms that are installed on my master node: ganglia-monitor-gmetad-0.1.1-8mdk ganglia-monitor-core-2.4.1-10mdk ganglia-monitor-script-2.4.1-10mdk libganglia-monitor1-2.4.1-10mdk ganglia-monitor-gmetad-web-frontend-0.1.1-2mdk Thanks for your time, Glen Kaukola CE-CERT UC Riverside
