[OpenAFS] Swapping AFS DB servers on the same IP names/numbers

[Steve Roseman]

Bill Hays wrote:
> We have three older afs db servers running on suns and are migrating to
> three new servers running redhat linux. What we'd like to know is whether
> we can take down the old servers, and renumber and rename the new servers
> to match the three old servers so that we do not have to touch the
> CellServDB entries in all of the clients.

	I recently did that, replacing 3 AIX Transarc AFS systems with 3 Linux 
1.2.11 systems, one at a time (maybe a week or more apart.)  The trick 
was to make sure all of the volumes were moved off each server before 
shutting down AFS.  I then switched IP addresses, and brought up the AFS 
services on the "new" system.

	It's not quite that trivial, but not too difficult. It just takes care.

	You do need to make sure your "upserver" and "upclient" configs are 
right so you don't accidentally update binaries with the wrong 
architecture...  (Gee, AIX doesn't run Linux binaries!)

Steve

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Stephen G. Roseman
Lehigh University
sgr0@lehigh.edu