I had a similar problem. I think Grafana or Chronograf still has its place, but based on what you've said I'll try replacing some of our dashboards with a Bokeh generated dashboard. The library looks very powerful. What is the best practice of updating the plots (e.g. once a minute)?
There are several strategies for live-updating bokeh plots; tbh I'm not sure which ones are best. The officially supported one is Bokeh Server: https://demo.bokeh.org/surface3d
In any case, for me it's "the robot had a problem sometime in this 30 minute window, please dig through 3GB of logs to figure out what went wrong", and doing a bunch of pandas crunching upfront and dumping out a bunch of time series plots makes that kind of task really straightforward.
