User-friendly error pages from Varnish

Question

We are using Varnish at the front of Plone. In the case Plone goes down or serves an internal error we\'d like to show a user-friendly static HTML page which some CSS styling +

Answer 1

You can customize the synthetic page being served on a vlc_error. The default.vcl configuration file already shows how to do this, by serving the famous "Guru Meditation" error page (ahh, those wonderful Amiga days).

An example customization:

    sub vcl_error {
        set obj.http.Content-Type = "text/html; charset=utf-8";
        synthetic {"
    
    
    
      
        
        
      
      
        
The server is being updated
        
Please check back later. Meanwhile, here's a picture of a rabbit with a pancake on its head:
        
      
    
    "};
    return (deliver);
}