InfluxDB+Grafana persistence and graphing

[rlkoshak (Rich Koshak)]

For anyone who comes across this, I’ve posted the new way to render png image charts from Grafana as of version 6.4.x.

Grafana Image Renderer

We have all had issues with Grafana generating static png charts for some time now. The root cause is PhantomJS. According to the docs on Grafana’s website: PhantomJS is deprecated since Grafana v6.4 and will be removed in a future release. Please migrate to Grafana image renderer plugin or remote rendering service. For at least a year now rendering the images on an RPi has been unavailable as PhantomJS would run amok and consume all the resources until openHAB itself was killed by the kerne…