[SSSD] Design document - Do not always override home directory with subdomain_homedir value in server mode

Sumit Bose sbose at redhat.com
Thu May 28 09:50:15 UTC 2015


On Thu, May 28, 2015 at 11:30:34AM +0200, Jakub Hrozek wrote:
> On Thu, May 28, 2015 at 11:23:23AM +0200, Pavel Reichl wrote:
> > 
> > 
> > On 05/28/2015 10:34 AM, Jakub Hrozek wrote:
> > >On Wed, May 27, 2015 at 08:00:44PM +0200, Pavel Reichl wrote:
> > >>Hello,
> > >>
> > >>please see design page for simple - RFE: Do not always override home
> > >>directory with subdomain_homedir value in server mode.
> > >>
> > >>https://fedorahosted.org/sssd/wiki/DesignDocs/use_AD_homedir
> > >>
> > >>**************************************************************************
> > >>**************************************************************************
> > >>**************************************************************************
> > >>
> > >>= Do not always override home directory with subdomain_homedir value in
> > >>server mode =
> > >>
> > >>Related ticket(s):
> > >>  * https://fedorahosted.org/sssd/ticket/2583
> > >>
> > >>=== Problem statement ===
> > >>Prior to sssd 1.12, we didn't have the ability to read home directory values
> > >>from AD in AD-IPA trust setups at all. Instead, we always used the
> > >>`subdomain_homedir` value. We can read custom LDAP values now, but in order
> > >>to stay backwards-compatible, we kept using the `subdomain_homedir` value.
> > >>
> > >>=== Use cases ===
> > >>Users from AD with POSIX attributes want to use individually set value for
> > >>home directory.
> > >>
> > >>=== Overview of the solution ===
> > >>`subdomain_homedir` for SSSD in server mode should support '%o' template
> > >>expansion (The original home directory retrieved from the identity
> > >>provider). In case when `subdomain_homedir` would be expanded to an empty
> > >>string ('subdomain_homedir=%o' and AD user without POSIX attributes) SSSD
> > >>should not error out but `fallback_homedir` should be utilized instead.
> > >Are you proposing to change the default of subdomain_homedir from /home/%d/%u
> > >to /home/%o as well? I think we can do that in a major release if we
> > >properly document the change, but I think then fallback_homedir in IPA
> > >server mode should be changed to /home/%d/%u at the same time.
> > No I'm not proposing such change. But I like it and I can add it do design
> > page and implement it.
> 
> Let's discuss it on the meeting today (and then circle back to the list
> so everything is recorded)

As long as this only relates to SSSD in ipa-server-mode we can use the
type of the idranges to switch the default of subdomain_homedir?

bye,
Sumit

> 
> > I would do that in a separate patch so we can delay
> > release of this change for a major release as you proposed. Does this work
> > for you?
> 
> By major release I mean 1.13 :-) But yes, this should be a separate
> change.
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