I want use ganglia's data to analyze our cluster, But I don't know where is the ganglia's database.
Anyone had do this before?
shawmzhu
It is rrd files that stores metrics data on gmetad. usually the default path is /var/lib/ganglia/rrds/<cluster-name>/<node-name>/
where each metric is stored in a single rrd file like bytes_in.rrd
Please refer to command rrdfetch or this question to see how to fetch data from rrd file (this is pure rrdtool question which is out of ganglia technology)
krzysiek.ste
To get data from ganglia .rrd files and save it in .xml file, you can use rddtool.
rrdtool dump filename.rrd [filename.xml] [--header|-h {none,xsd,dtd}] [--no-header] [--daemon address] > filename.xml
example:
sudo rrdtool dump bytes_out.rrd > data.xml
来源:https://stackoverflow.com/questions/15760128/how-to-get-data-from-ganglias-database