+<%=
+case scope.lookupvar('::cluster')
+ when "ganeti2.debian.org" then 'MIRROR="http://mirror-ubc.debian.org/debian"'
+ when "ganeti-osuosl.debian.org" then 'MIRROR="http://debian.osuosl.org/debian"'
+ else 'MIRROR="http://http.debian.net/debian"'
+%>