Grafana + InfluxDB are the simplest to get up and running. Literally two binaries that you download and run, that's it. Can't beat the simplicity of this set up

Grafana + InfluxDB are the simplest to get up and running. Literally two binaries that you download and run, that's it. Can't beat the simplicity of this set up and you can get a lot done with it, if you are just starting your metrics infrastructure I can recommend it.