How to get data from ganglia's database

假如想象 提交于 2019-12-22 04:37:10

问题


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?


回答1:


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)




回答2:


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

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