On Sun, Jul 01, 2018 at 03:25:26PM -0500, Spike White wrote:
> sssd subject matter experts,
> 
> Why is my sssd deployment not doing cross-subdomain AD authentication?
> 
> 
> 
> *Background:*
> 
> I have a parent AD domain DELL.COM with trusted subdomains AMER.DELL.COM,
> APAC.DELL.COM, EMEA.DELL.COM and JAPN.DELL.COM  Each subdomain has a
> transitive trust with DELL.COM.
> 
> So all subdomains trust each other.
> 
> I set up a first test VM deployment using sssd.  I set up the cross
> subdomain auth as in:
> 
> https://lists.fedorahosted.org/pipermail/sssd-users/2015-February/002648.html
> 
>  It worked great – allowed cross subdomain authentication.  The only thing
> it would not do was use tokengroups.  That is, the VM was fully functional,
> but I had to add ‘ldap_use_tokengroups = false’  to the sssd.conf file.
> 
> My AD experts have advised me that ‘tokengroups’ are an important AD
> optimization and I should use them, if at all possible.
> 
> Using ldapsearch, I was able to verify that machine account didn’t have the
> necessary privileges to query a user’s tokengroups.  Thus, the fault was
> mine – that this first sssd deployment couldn’t use tokengroups.
> 
> So I did another sssd deployment, using another test VM.  Apparently, I did
> the realm join command correct this time, as it’s able to use tokengroups.
> 
> BUT!  This second test VM is not allowing cross subdomain authentication
> and login.    How do I fix this so that I have use of both tokengroups and
> cross subdomain authentication?
> 

...

> 
> If I do the same query on the bad VM (spikerealmd02):
> 
> 
> 
> [root@spikerealmd02 sssd]# id admjesse_chan
> 
> id: admjesse_chan: no such user

How do you know that tokengroups are working if the request fails and
the lookup is not recorded in the logs?

> 
> 
> 
> and I see nothing in the sssd_apac.dell.com.log file:
> 
> 
> 
> [root@spikerealmd02 sssd]# grep -i admjesse_chan sssd_apac.dell.com.log
> 
> [root@spikerealmd02 sssd]#

Do you see the user name in sssd_nss.log? If not, is 'sss' listed in the
passwd line of /etc/nsswitch.conf?

bye,
Sumit

> 
> 
> 
> Please help,
> 
> Spike

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