On Wed, Aug 24, 2016 at 09:52:17AM +0200, Jakub Hrozek wrote:
On Wed, Aug 24, 2016 at 07:39:54AM +0000, Joakim Tjernlund wrote:
On Wed, 2016-08-24 at 09:14 +0200, Petr Spacek wrote:
On 24.8.2016 09:03, Joakim Tjernlund wrote:
Getting to the of our AD domain migration but there is one step I haven't solved. Our users has UID/GID in the new domain while the already present users in the new domain does not. Assigning UID/GID to all users does not sit well with upstream IT so I amĀ looking at what to do with these when they visit/access our site.
What comes to mind is partial id_mapping, if a user had UID/GID in the AD use that, otherwise do id_mapping for that user(preferably the same way samba does it since we already have a samba based interim solution).
I haven't found a way to do that in sssd, is there? Maybe I am just full of it and this is really a bad idea?
Are you using FreeIPA? FreeIPA got support for "ID Views" which can be used for this purpose. (I'm not very sure about pure-SSSD case.)
It is also possible in the pure-SSSD case, see man sss_override for details.
I wish, but this is a Windows AD :(
Petr had IPA-AD trusts in mind, I guess.
Partial ID mapping is not possible, sorry.
yes, SSSD cannot do this automatically because we can never be sure that a UID/GID attribute will be added in future to a user who currently does not have them set.
But sss_override might help you. Depending on whether new users created in AD will have UID/GID set or not you can create overrides for the existing users with or without them and then use ldap_id_mapping 'true' or 'false' respectively.
Since this is not a centrally managed solution you have to do this on every host running SSSD and you have to load the overrides again each time you remove the cache, see user-import and user-export in man sss_override for details. Depending on the number of clients it might make sense to introduce FreeIPA to have a centrally manages solution for this.
bye, Sumit
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