[OpenAFS] Re: openafs versus systemd

[Jeffrey E Altman]

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On 6/28/2023 10:18 AM, Jan Henrik Sylvester wrote:
> On 6/28/23 15:02, Jeffrey E Altman wrote:
>> On 6/28/2023 3:54 AM, Jan Henrik Sylvester wrote:
>>> On 6/9/23 13:38, Jan Henrik Sylvester wrote:
>>>> - you cannot use snap packaged with a home directory outside /home: 
>>>> use ppa:mozillateam/ppa for Firefox and Google Chrome instead of 
>>>> Chromium
>>>
>>> Correction: This does not seem to be true anymore.
>>>
>>> snap set system homedirs=/afs/math.uni-hamburg.de/users
>>>
>>> works for Ubuntu 22.04.
>>>
>>> The Firefox snap does start with this setting. We have very limited 
>>> experience with this setting. Kerberos authentication does not work 
>>> in Firefox snap, which is a known problem (independent of AFS).
>>>
>> What credential cache type is in use?
>>
>> The underlying issues are the same as for PAGs.  The assumption is 
>> that a 'uid' represents all of the authorization credentials 
>> associated with the user.   If the Kerberos credential cache is using 
>> a session keyring or something that is not global to the 'uid', then 
>> there will be no Kerberos TGT available to snap.
>
> Maybe I was not clear enough. Accessing the home directories from 
> Firefox is not the issue. Kerberized http is the issue:

You were clear.   I am suggesting that you use a Kerberos credential 
cache that is tied to the uid for example a keyring with user scope 
instead of session scope.

Jeffrey Altman



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