Hi all.

 

I’m running sssd on RHEL6 and seem to have a problem seeing secondary/auxiliary groups for logged in users.

 

I’m using SASL/Kerberos/LDAP authentication to an AD backend.  I’m using this config:

 

[domain/KRB5DOMAIN]

enumerate = true

cache_credentials = True

id_provider = ldap

auth_provider = krb5

chpass_provider = krb5

 

ldap_schema = rfc2307bis

ldap_user_object_class = user

ldap_group_object_class = group

ldap_user_member_of = msSFU30PosixMemberOf

ldap_group_member = msSFU30PosixMember

 

ldap_uri = ldap://xxx.xxx.xxx/

ldap_search_base = dc=xxx,dc=xxx,dc=xxx

ldap_group_search_base = ou=Groups,dc=xxx,dc=xxx,dc=xxx

ldap_sasl_mech = gssapi

ldap_sasl_authid = host/hostname.xxx.xxx.xxx@xxx.xxx.xxx

ldap_krb5_keytab = /etc/krb5.keytab

ldap_krb5_init_creds = true

krb5_realm = xxx.xxx.xxx

 

Logging in works fine, and I can specify an “ldap_access_filter” to limit the people who can log into the machine by the AD groups they are in and it works a treat.

 

The problem I have is:  when I log in I can not see the secondary groups that my userid is in.  When I run “id” or “groups”, I only see my primary group:

 

[tim@rhel6 ~]$ groups

sysadm

 

If I run the “groups” command on a RHEL5 system (using ldap/krb5/pam_ldap), you see many groups:

 

[tim@rhel5 ~]$ groups

sysadm unixdef edc0002 midrange midora cifrs cifru yyyyy cdirt pdiru jbsrt cdir cdird edcrt cdiri voiru voirs estrt pc4rt middlemr pc4ru insrd insrt insrs fess dplrt dplru sdsdev sdsrd gwrrt mmsrt cbsrt hudru jirru sybau aimru aimrs svnr fshru oggat rmbat aairu aairs pdirs ecors ecoru frirt esvru nexru xyzrt xxxrt kkrt dumrt tabrs tabrt

 

I’ve been through the red hat bugzilla and sssd trac and I don’t see a solution.  I have set my schema to “rfc2307bis” and I have enumerate = true.

 

I’m wondering if sssd only grabs the first 1000 users and 1000 groups and then stops:

 

[root@rhel6 /]# grep 1000 /var/log/sssd/sssd_KRB5DOMAIN.log
(Tue Dec 21 14:50:11 2010) [sssd[be[KRB5DOMAIN]]] [sdap_get_users_process] (6): Search for users, returned 1000 results.
(Tue Dec 21 14:50:17 2010) [sssd[be[KRB5DOMAIN]]] [sdap_get_users_done] (9): Saving 1000 Users - Done
(Tue Dec 21 14:50:21 2010) [sssd[be[KRB5DOMAIN]]] [sdap_get_groups_process] (6): Search for groups, returned 1000 results.
(Tue Dec 21 14:50:36 2010) [sssd[be[KRB5DOMAIN]]] [sdap_get_groups_done] (9): Saving 1000 Groups - Done
[root@rhel6 ~]# getent group | wc -l
1049
[root@rhel6 ~]# wc -l /etc/group
49 /etc/group

 

Could it be because our AD has many more than 1000 users and 1000 groups?  If so, if there any way to increase this limit?

 

Alternatively, if we there was a group search filter option that would also reduce the number of groups to enumerate, but I see this feature has already been requested.

 

I’m not convinced this 1000 record limit exists or is even the root cause of my problem though.  If there’s anything you guys can suggest I’d be most appreciative.

 

Many thanks,

 

Tim.

 



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