Metrics forwarder

[tgross]

ContainerMonitor supports the Prometheus API but its clear, particularly given the poor story around long-term persistence (ref #12), that we want to have a blueprint for metrics forwarding using the Prometheus API. This metrics forwarder would scrape Prometheus endpoints and then forward to an end-user's existing metrics collectors (ex. graphite, ES, nagios, etc.).

Open questions for this issue:

• what metrics collector(s) should we support?
• what existing tooling is there for scraping Prometheus and forwarding the metrics? telegraf seems promising.
• should this be a separate blueprint or keep it in this repo as an alternative option?

Edit see also https://github.com/misterbisson/telegraf/tree/wip

[misterbisson]

https://github.com/influxdata/telegraf is designed specifically for this purpose. It supports a number of inputs, including prometheus and generic json, as well as a number of outputs.

I created https://github.com/misterbisson/telegraf/tree/wip to start work on this, please watch tickets in that repo to define it.

[misterbisson]

Closing this in favor of autopilotpattern/telegraf#1 and autopilotpattern/telegraf#2