Support for boolean and null in thresholds

[kbiernat]

Hello, We have a case where we'd like to monitor boolean value from influx. Ideally, we'd like to have for example green status for boolean true, warning for boolean false, and probably critical for data missing. Currently Warning and Critical boxes don't support anything except [0-9,.+-]

[tomer-amir-vonage]

Hello @kbiernat, We are considering to add string thresholds which will change the color of the panel by string matching. Will that do?

We just added support recently for turning the panel gray when there is no data. will that also work for you?

[melroy89]

@TomerAmirV @YehonatanVonage No string matching won't work in this case. Since a boolean is NOT a string (makes sense, it's not the same type). I tried to use your Status Panel Plugin, but I can't get it working :cry: ...

Here you can see my Influx query (on Telegraf S.M.A.R.T. disk healthy data). To go not in too much into details; you can see this query returns a boolean (false in this case). I would expect I can use a true/false value to switch between "OK" (=true) or "Critical" (=false):

Again, in this case my query returns 'false'. Still The Status Panel plugin shows green background (OK), despite my string matching... :sos: (I guess, since again a boolean is not a string):

What now? Also the built-in Grafana plugin (like Singlestat) can't handle booleans.. https://github.com/grafana/grafana/issues/8152

NOTE: It's even dangerous, since people could configure this setup without any user interface warning, thinking they configure it correctly. Where as the system can go bad (ico healthy flag becomes false --> DISK FAILURE), your plugin will report green/ok.

[araisch]

+1 With raising use of Grafana in IoT this will be more and more important. All the PLC send tons of booleans as status variables.