Find Ratio Between Two Metrics

Your custom vis should be very simple then. Take two Metric Aggs, and divide them, showing the result. No need for buckets.

I haven't written a custom vis before. I was hoping for something so basic that Kibana provided it. Javascript skills-permitting, I guess I can get my hands dirty. Any tutorials you recommend I read?

There is one tutorial around there, that I have used as a starting point:

Apart from that, take a look at my github (https://github.com/JuanCarniglia) perhaps you can get an example or two from there.

Hi guys,

Something new about this topic?
It's always not possible to make something like this in scripted field ?

(sum of disk usage) / (sum of disk size).

Thanks !
Have a nice day.

This plugin https://github.com/ommsolutions/kibana_ext_metrics_vis allows you to to such things.