carbon-tagger does not translate received metrics to Grapthite

Question

I have configured monitoring system as bunch of next stuff:

my_app -> pystatsd -> statsdaemon -> carbon-tagger -> graphite (via carbon-cache) -> graph-explorer

But it looks like carbon-tagger does only dumping metrics to ElasticSearch but not to Graphite. In the same time carbon-tagger successfully send his internal metrics to carbon-cache and they appear in Graph Explorer well. I have look at the source code of the carbon-tagger and could not find place where it send any received from statsdaemon metrics to graphite. So now I'm confused! How should I configure my monitoring system to dump metrics both to the ElasticSearch and to the Graphite?

Answer 1

In a nutshell, correct configuration of described system should looks likes this:

That is, statsd/statsdaemon should pass in data to the carbon-relay (or carbon-relay-ng), not to the carbon-cache directly. And carbon-relay will broadcast data to the carbon-tagger and carbon-cache. Also, don't forget that carbon-tagger doesn't work with pickle format, while original carbon-relay produces data only through pickle protocol.