Device status?

Question

Monitoring

I have about 20 monitors with nettops . Ubuntu is installed
on them and a web page is opened in the browser according to the script, which displays information for clients. So I need to somehow monitor the status of devices for the fact of opening this page. Usually ping will not help, since the device may work, but the page itself is closed or hung, and you need to quickly find out about it. All devices within the same subnet.

Answer 1

Put the script on the page, let the server ping.

Answer 2

make an autorefresh of this page and monitor the log on the server. as soon as someone did not pull the page during the refresh, it seems that he died and it's time to go poke with a wand.