Zabbix is bollocks. so is nagios. Having remote root access to all your stuff is utter shite.

Prometheus as a time series DB is great, I even like its QL. What I don't like is pull. Sure there is agent mode or telegraf/grafana agent. But the idea that I need to hold my state and wait for Prometheus to collect it is utterly stupid. The biggest annoyance is that I need to have a webserver somewhere, with a single god instance(s) that can reach out and touch it.

Great if you have just one network, but a bollock ache if you have any kind of network isolation.

This means that we are using influxdb and its shitty flux QL (I know we could upgrade, but thats hard)