[OpenAFS] Changing the hostname of AFS server
Thu, 4 Dec 2008 13:13:17 -0500
On 12/3/08, dave first <email@example.com> wrote:
> I am new to AFS. I have inherited an old, crusty, but functional
> Transarc AFS cluster of three servers running on Solaris 5.8.
> Unfortunately, the hardware has become unstable. I have installed
> OpenAFS server on Linux which communicates with the old AFS service.
Congratulations! It's a cell!
> My goal is to migrate all the AFS services to the new Linux OpenAFS
> server which would then become the primary server. I have a few
> hurdles to overcome before I can do that. One hurdle is that my
> knowledge of AFS is minuscule, but growing. I've barely scratched the
Don't worry. I've been doing this for 20 yrs and I'm still learning. :-P
> My question for today is: How integrated into OpenAFS is the server's
> hostname? Our Linux server name needs to be changed - easy enough to
> do on Linux, but what needs to be updated in AFS? My assumption is
> that as long as I touch all the correct config files, and restart the
> service, all will be happy. Is that correct?
The server hostname is used in keeping track of where volumes live.
The identification in the VLDB - the Volume Location DataBase -
includes the name of the server (and partition) of each volume.
The easiest way to change the name of a server that's already serving
AFS volumes is:
- get a full listing of all the volume names on the servers
- shut down the AFS server processes
- rename the machine
- restart the AFS server processes
- run "vos changeloc" on every volume on the server
This will tell the VLDB, "Hey, those volumes you have listed as being
on machine FOO? they're now on machine BAR."
> Since this server also talks with the old AFS server, I would need to
> update the configuration on that as well.
Nope, you don't have to change a thing on the old server. All
information is maintained in the VLDB -- so you don't have to change
information on each server.
The only exception is when you're changing names/ip addresses for
"database servers" -- the machines that run the VLservers and the
PTservers. (If you're still running a KAserver, I
stronglystronglySTRONGLY urge you to move to a Kerberos5
implementation asap.) In that case, you will need to change the
CellServDB file(s) on all servers, and restart the server processes.