Credentials Cache File Problem Running with 'cron'

Dennis Putnam Dennis.Putnam at
Fri Dec 5 11:37:10 EST 2008

Thanks for the reply. That was suggested also but it appeared that the  
OS X implementation did not use that variable. However, your format is  
different then what was suggested. Specifically, the 'FILE:'. While  
that variable does not exist I assumed when I created it and got the  
same error it was because this implementation ignored it. Perhaps it  
was because of my incorrect format. I'll give it a try when I can and  
get back to you.

On Dec 5, 2008, at 8:53 AM, Alexandra Ellwood wrote:

> By default Kerberos on Mac OS X uses the API credentials cache  
> format to store credentials.  This credentials cache is only  
> available from user sessions, not from daemon sessions like the one  
> used by cron.  I recommend using the environment variable KRB5CCNAME  
> to specify a FILE credentials cache format and storing your tickets  
> in that (eg: KRB5CCNAME=FILE:/tmp/tickets).  Using the same FILE  
> ccache from your perl script should work.
> --lxs
> Alexandra Ellwood <lxs at>
> MIT Information Services & Technology
> <>

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