When HyperVM cannot connect to a node, it reports: "Please login and restart hypervm service on this server".
This does not always mean it is down - For example, after some updates, you have to restart the HyperVM service on each dedciated Node (service hypervm restart), but the reason I know this server is down, is because it does not respond to ping requests.
You also get the error "Please login and restart hypervm service on this server" if the server is down totally (Like this one) and it is reported in the main HyperVM node.
This does not always mean it is down - For example, after some updates, you have to restart the HyperVM service on each dedciated Node (service hypervm restart), but the reason I know this server is down, is because it does not respond to ping requests.
You also get the error "Please login and restart hypervm service on this server" if the server is down totally (Like this one) and it is reported in the main HyperVM node.