https://github.com/groupon/monsoon
This is a really awesome Metrics framework, and I think the first big piece of software to be developed and open sourced from Groupon Dublin.
Please feel free to check it out and open some PRs.
It has been about a year in development, and as a metrics frameworks is pretty self contained and extendable. We have some common collectors:
1. collectd Metrics 1. JMX local and remote. 2. URL HTTP (think a simple pingdom) 3. Scrape a JSON endpoint over HTTP, I.E Hadoop metricz endpoint. 4. A history module that will write time series to disk. 5. It as metrics API endpoint for graphing ( work in progress). 6. It also has a prometheus exporter.
Please feel free to check it out.