FreeBSD: Disaster-tolerant fallover(?) Server switching software for FreeBSD / Linux?

L. Cranswick lzc at
Tue Oct 16 18:13:44 BST 2001

This is not specifically a FreeBSD query but it would most
likely be involving FreeBSD systems somewhere in the chain
of things.  (and am not sure of the correct terminology here)

For getting a server system (Web, FTP and Rsync) going where there 
is a physically separate redundant "fallover" server - 

  Is there software available that will detect if the primary 
  server has gone down (or failing) and auto-switch the
  secondary server to take over transparently.

  I guess this would also involve software on the DNS server as well
  to redefine IP addresses and aliases?


Any clues or links to intelligent ways of doing this with FreeBSD/Linux.
(network group here is primarily composed of Linux fans at the moment)



Lachlan M. D. Cranswick
Collaborative Computational Project No 14 (CCP14)
    for Single Crystal and Powder Diffraction
  Birkbeck University of London and Daresbury Laboratory 
Postal Address: CCP14 - School of Crystallography,
                Birkbeck College,
                Malet Street, Bloomsbury,
                WC1E 7HX, London,  UK
Tel: (+44) 020 7631 6849   Fax: (+44) 020 7631 6803
E-mail: l.m.d.cranswick at

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