Each node reports its memory, versions and addresses every 5 minutes; nodes heard from in the last 7 days are listed. Newer versions come from the fleet's APT repository (apt.economy1.cloud), checked every 15 minutes. A node whose last report is more than 15 minutes old may be offline. Working on a node? Open it and press Maintenance: everyone who opens this page sees it as unavailable until someone presses Done.