I've installed Ganglia v3.0.1 and setup the web interface to gmetad. I've setup this up on a small cluster of 5 machines using the default configuration for gmond by using the command 'gmond -t'. I've put this config file no all the nodes.
Then I setup my gmetad.conf file as follows: data_source "a" 192.168.7.10 data_source "b" 192.168.7.11 data_source "c" 192.168.7.12 data_source "d" 192.168.7.13 data_source "e" 192.168.7.14 gridname "foo" When I look at the web interface for Ganglia I notice that the image showing the number of CPUs in the cluster is not accurate. It oscillates up and down over time despite nodes not being added or removed from the cluster. It's reporting anywhere from 8 to 14 CPUs in the cluster when there are really 20 CPUs in the 5 boxes. (The text to the left of this image does indicate there are 20 CPUs in 5 hosts.) Additionally, "Total In-core Memory" shown in the cluster on this interface is lower than the sum of the amount of RAM in all boxes and varies over time. However, if I look at the stats for any one node in the cluster the values are correct and constant over time. Has anyone seen these kinds of problems? How have you addressed them? Thanks, Matt
