I have a data coming from logstash that shows how much space is used on a table in a database and maximum allocated capacity for a table. I want to create in Kibana gauges for every table that show how much space is currently occupied.
The problem is that maximum available space sometimes changes so the limit for a gauge has to be set as a variable and I can't figure out how to do this. I also don't know how to show only data from current day on a dashboard for a time range. Data coming from logstash looks like that: