Just released Cacti Mirage plugin dumps poller data to file for easy ingestion into any downstream system, like Splunk. Plus, a Cacti app coming soon to Splunk.
Check it out:
http://blogs.splunk.com/2016/01/29/splunk-and-cacti/
http://docs.cacti.net/userplugin:mirage
http://n00blab.com/splunk-snmp-data-with-cacti-mirage/
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