The graphite plugin seems to be fine, but we need more infos's.
here is an example of our plugin:
LoadPlugin write_graphite
Host "hostname-relay"
Port "xxxxx"
StoreRates false
AlwaysAppendDS false
EscapeCharacter "."
SeparateInstances true
Did you try to get some data into your indexer?
At your splunk server you have to configure data inputs for your specific collectd port. ( TCP)
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