Rrd4j to txt


Is there any simple way to convert rrd4j persistence files into txt (csv, xml, plain text …)


You can get everything as JSON through the REST API. Go to Developer Tools → API Explorer → Persistence and you will find where you can query the database for a given Item. Put in a start time far enough in the past to catch all the data.

Beyond that you can use HowTo Change values in an rrd4j database as a template to write something in Java to do this for you.