As a favor to a friend, I'm trying to setup a mirror of his server, where I can basically be a 'hotswap' for him. So far, the main problem that I'm running into is that everything is ip-based. For instance, it's dead-simple to be a secondary dns server for him, but if his box (which hosts dns, web, and mail) goes down, then I'm simply pointing people into dead-space, right? Well, email is the one standout, where the MX records would get them to my machine, but I'm having a hard time figuring out how to make web and dns do the same thing.
To explain what I mean, say he's box a, ip 10.0.0.1, i'm b, ip 192.168.0.1. We are on completely different networks, with different providers. So his machine/connection goes down, and I, using mon or bb, detect it. Now what? bind happily tells people to go to 10.0.0.1 for foo.org. My carefully mirrored httpd.conf contains a bunch of lines talking about <VirtualHost 10.0.0.1:80>. Without manually editing all those, what's the solution? And, just to make things doubly difficult, it would be really, really nice if it worked as both a 'normal' secondary, and a mirror, at the same time. :-P But if I had to choose, it'd definetly be to be a mirror. Pointers to the FM to R would be appreciated, google just got me a bunch of links about mirroring with hot-swappable computers on the same network, or setting up secondary dns servers, neither of which as particularly helpful :-) Thanks! D.A.Bishop P.S. The most helpful thing is that we are running matching version of debian, so software installing/version matching is no problem at all...
