This is the fourth beta release of poller v2 (a couple got deleted). The bugs have been worked out. It should be good to go now. Feedback requested!
The config file format has changed in v2, and so have the environment variables (typically used in Docker). The new config file format is in this repo's master branch. You can find the wiki updates (including new env variables) in the wiki! The v2 checklist is here.
Finally, this release includes new dashboards. Get them from grafana.com.
Once a final v2 release comes out, the wiki and dashboard updates (linked above) will be merged into their official locations (this repo's wiki, and grafana.com, respectively).