Bernard Li wrote:
>> I am trying to write a script that pulls the info from netcat >> and averages out some numbers but I believe that there is a >> easier way. Does ganglia store data in such a way that I >> could pull this type of information? This appears so useful >> to me that I am sure that there are others that have tried >> this, are there any ideas and suggestions? >> > > Sorry for hijacking your thread Chris but your question leads me to > think that there are some interesting data stored in the RRD database, > perhaps we could write a script to mine this data and provide some > interesting historical reports? > Actually, my patch for "custom graphs" accomplishes exactly what you're talking about. It allows you to create a template and then load it for whatever view (meta, cluster, host) you desire. Couple this with gmetrics and you can pretty much generate a graph for anything (read - visually represent any aspect of your data). It also supports rrdtool's CDEFs, so you can do data transformations as well. Oh, and the rendering backend may be called from within an <IMG SRC=...> which allows creating "customized dashboards". I've started working on one where customers can view different utilizations graphs based on the cluster specialty (batch, interactive, infrastructure), NFS statistics, parallel job utilization (how much does process named X consume across multiple hosts), etc. What I'm really missing is a method to "generate" aggregate data on the fly. Something like "take these 3 hosts, all from different clusters, and show me their aggregate CPU consumption". Cheers, Alex
