List 3rd party software exporting prometheus metrics or supporting prometheus in other ways about docs

[fabxc]

The Django integration is interesting as well: https://github.com/korfuri/django-prometheus

[juliusv]

@brian-brazil @discordianfish

[beorn7]

https://github.com/google/mtail
https://github.com/Baughn/PrometheusIntegration

[oliver006]

https://github.com/oliver006/rethinkdb_exporter
https://github.com/oliver006/redis_exporter

[tgulacsi]

https://github.com/tgulacsi/prometheus_scollector

[fabxc]

https://github.com/dcu/mongodb_exporter

[juliusv]

This is awesome. I'm preparing a PR to put them under a "third party" section under http://prometheus.io/docs/instrumenting/exporters/. Some of them are clearly exporters in the sense that they extract metrics from an existing system and translate them into Prometheus metrics. Others are directly instrumenting the thing-to-be-measured, like Etcd. Others are kind of in-between, like cadvisor. It might be hard to draw clear limits here. How aobut just calling the section "Third-party integrations and exporters" (or similar) and mention them all in one go?

[juliusv]

I did end up splitting them up into exporters/directly-instrumented in the end.

Suggestion PR here: #71

[oliver006]

👍

[beorn7]

This has been fixed long ago.