Librenms migration from Pi to Docker

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I’m trying to migrate historic data from Raspberry pi to a new docker container. I tried to copying rrd file to the new location with permissions but so far no luck, any idea how to migrate?

Many thanks

Copying the rrd files should be ok, as long as the rrdtool can access them and the names are the same. I have copied the files from localhost to a remote rrd server and it worked fine.