Is there a currently a way to configure an alert for Foglight to notify if a system has been rebooted for VMs and Physical hosts?
I can see that Foglight polls the VM system uptime from the vcenter, but I couldn't find any registry variable for an "uptime."
No rule exists for either physical or virtual hosts.
Reference the following KB articles:
KB 195866 Can Foglight display the uptime of a server?
KB 122125 Does the Foglight for VMware cartridge report the 'uptime' of an ESX host?
Status: Yes as of FVE 8.0.
KB 189893 ESX Host Uptime Report in Foglight
Referencing KB 189893 for the data path to 'uptime', one would have to create their own specific rules to trigger on VM hosts, then another for Physical hosts.
This is customization which our Professional Services team can be contacted if you desire.