[OpenAFS] Tokens and screen under linux

Anders Magnusson ragge@ltu.se
Mon, 06 Jul 2009 18:22:59 +0200

Lars Schimmer wrote:
> Hi!
> One of our users try to run a job longer than usual tokens runtime.
> Keeping a ssh open for that long time is not wanted.
> We use a Win 2003 AD server as a krb5 KDC and krenew just hits
> "krenew: error renewing credentials: KDC can't fulfill requested option=
> And if I login as user, hit a screen command, the screen process has
> ticket/tokens like login user. I can detach and reattach screen like
> usual. But if I detach screen and logoff, ticket/tokens for the running
> screen are lost.
> How can I run a long time job on linux in screen without tokens get los=
I would do something like

% kinit -t /path/to/my/secret/keytab tcsh

This depends on Heimdal kinit, but it will keep your tickets and tokens
up-to-date as long as you are not exiting the started tcsh.  It also give=
you a new credential cache and a new PAG, so it will work even if the
parent PAG or credential cache gets destroyed.

-- Ragge

> Debian amd64 system
> OpenAFS 1.4.10+dfsg1-1~bpo50+1
> libkrb53 1.6.dfsg.4~beta1-5lenny1
> MfG,
> Lars Schimmer
> --
> -------------------------------------------------------------
> TU Graz, Institut f=FCr ComputerGraphik & WissensVisualisierung
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