[OpenAFS] About the upgrading from kaserver to Kerberos 5

[Jeffrey Altman]

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The original poster's text has been modified to replace "Kerberos 4"
with "kaserver".  "kaserver" is not the same as MIT Kerberos 4 and it is
very important to distinguish between the two.

On 5/15/2018 4:52 AM, huangql wrote:
> Hi all,
>=20
>=20
> We are working on the upgrading of Openafs kaserver to KDC 5. We
> checked some documents to know we have to use afs2k5db tool to convert
> users in kaserver to KDC 5. But it's really a pain to compile it with
> Openafs-1.4.14-1 and=C2=A0krb5-server-1.10.3-65.el6.x86-64 due to the
> incompatibility of the higher version of krb5 and AFS.
>=20
> I tried to modify the afs2k5db source code to eliminate the compile
> error to generate the tool afs2k5db. However, we failed to convert
> users with the following error.
>=20
> [root@afs01=C2=A0src]#=C2=A0./afs2k5db=C2=A0/usr/afs/db/kaserver.DB0=C2=
=A0>=C2=A0anafsuser.out
> Read=C2=A0of=C2=A0KA=C2=A0database=C2=A0header=C2=A0failed:=C2=A0only=C2=
=A0got=C2=A037888=C2=A0of=C2=A065632=C2=A0bytes
>=20
> Could you help to figure out the issue? And is there other quick way to=

> migrate the users in kaserver to KAS=20

The afs-krb5 source code worked by compiling against private functions
within both OpenAFS 1.2.x and MIT Kerberos 1.2.x.  The kaserver database
format has not changed since that time and although the MIT Kerberos
1.2.x database format has changed it is still possible to dump the
MIT Kerberos database from 1.2.x and import it into current data MIT.

Current versions of Kerberos have removed all support for Kerberos v4
and have significantly reduced if not removed entirely support for the
DES encryption types.

It will be easier to build a working version of afs2k5db by building the
tool against OpenAFS 1.2 and MIT Kerberos 1.2.  Building each of those
might require using an old 32-bit version of Linux and the gcc
toolchain.  Current versions of gcc and clang are unlikely to compile
old source code trees and there is the possibility that there are 64-bit
compatibility issues with those old releases as well.

Good luck.

Jeffrey Altman


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fn:Jeffrey Altman
n:Altman;Jeffrey
org:AuriStor, Inc.
adr:Suite 6B;;255 West 94Th Street;New York;New York;10025-6985;United St=
ates
email;internet:jaltman@auristor.com
title:Founder and CEO
tel;work:+1-212-769-9018
note;quoted-printable:LinkedIn: https://www.linkedin.com/in/jeffreyaltman=
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	Skype: jeffrey.e.altman=3D0D=3D0A=3D
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