Is there a way to display a website offline/maintenance message to users who try and visit a website where the physical server is offline.
The scenario: We have multiple client websites running at their site on their server. Sometimes they need to restart their physical server.
Would it be possible for our server here at the office to display the offline/maintenance message to users who try to visit their website if it's unreachable?
All servers will be running Windows Server 2012, Ruby on Rails and MySQL.
Edit: Preferably would be looking for an automatic solution for unplanned downtime.