I know this is super off-topic so please move or remove if not appropriate
I want to monitor my servers, cameras, printers and other devices (DB, media, Synology, Node-RED, ...) and I'm looking into nagios for that.
That would actually be my first question: Is nagios still the goto tool or are there others, especially if mainly I will ping servers to see if they are alive. I prefer a good web interface and the nagios one, at least the nice one, is not free.
Secondly, if the server who monitors the servers and/or the network and/or the internet link fails, I want something to push a message to my cell phone, assuming that will be alive through the mobile phone network.
I'm thinking of a raspberry with a small UPS, a modem and a SIM card to do that, next to some kind of keep-alive.
Or, since my Node-RED is running on a Raspberry, would it make sense to install a small UPS and a modem to that same Raspberry and have node-red do all that???
Can I create some kind of ping mechanism which monitors my devices through node-red and also run the alternative internet connection via the mode if the mail network link fails??
Has anyone used node-red as a monitoring device?
Maybe not so off topic after all..
Thanks for opinions!