On Tue, Aug 07, 2018 at 01:00:17PM +0000, Ondrej Valousek wrote: > My configuration file (sanitized): > [sssd] > services = autofs, nss, pam > config_file_version = 2 > debug_level = 0xFFFF > > domains = default, mydomain2 > [nss] > > [pam] > debug_level = 0xFFFF > > [domain/default] > debug_level = 3 > ldap_id_mapping = False > ad_domain = MYDOMAIN1.COM > id_provider = ad > auth_provider = ad > chpass_provider = ad > autofs_provider = ad > cache_credentials = True > # interval (in seconds) to renew Kerberos TGTs > ldap_user_name = uid > krb5_renew_interval = 3600 > > [domain/mydomain2] > debug_level = 0xFFFF > ldap_id_mapping = False > ad_domain = MYDOMAIN2.COM > id_provider = ad > auth_provider = ad > chpass_provider = ad > autofs_provider = ad > cache_credentials = True > # interval (in seconds) to renew Kerberos TGTs > ldap_user_name = uid > krb5_renew_interval = 3600 > # request renewable Kerberos tickets > krb5_renewable_lifetime = 30d > krb5_validate = False > > The machine is joined to MYDOMAIN1.COM (hence it has only credentials for > this domain in the default krb5.keytab) - but since there is two way trust > with MYDOMAIN2.com, it can use its machine Kerberos principal (granted from > MYDOMAIN1) for searches in both domains. > I tried that, it works well, but only in case I add: > "Ldap_sasl_authid = MYHOST$@MYDOMAIN1.COM" to the [domain/mydomain2] section.
Ah, I see. SSSD tries first to find a principal from the realm of the domain. This fails for MYDOMAIN2.DOM because the principal is from MYDOMAIN1.COM. Then SSSD falls back to allow principals from any realm. But in this fall back there is no special case for the AD provider anymore and SSSD pick the first entry which looks like 'host/anyname@ANYREALM'. Would you mind to open a ticket on pagure to fix this? Currently I cannot think of a good workaround. Instead of setting ldap_sasl_authid you can create a second keytab for mydomain2 which only contains the shortname$@MYDOMAIN1 entries of the original keytab. But it would be hard to keep them in sync when keytab renewal is used. You should not remove the 'host/..' entries from the default /etc/krb5.keytab becasue e.g. sshd depends on them. > > To me, this should not be necessary. > Ondrej > > > -----Original Message----- > From: Sumit Bose [mailto:sb...@redhat.com] > Sent: Tuesday, August 07, 2018 1:13 PM > To: sssd-users@lists.fedorahosted.org > Subject: [SSSD-users] Re: sssd connecting to two AD domains > > On Mon, Aug 06, 2018 at 08:34:04AM +0000, Ondrej Valousek wrote: > > Also, yes, setting ldap_sasl_authid does help, but it's bit awkward as > > right now I am using general sssd.conf for all machines. > > Having to include ldap_sasl_authid parameter means the configuration > > file is different for every machine :-( > > Can you share your sssd.conf? > > Are you using the AD or LDAP provider? Please note there are different > defaults for the principal for the two providers, AD will use > “hostname$@REALM” while LDAP will use “host/hostname@REALM”. > > With two domains I'd always recommend to use two different keytab files and > use krb5_keytab and ldap_krb5_keytab to point at least one domain to the > non-default keytab file. > > HTH > > bye, > Sumit > > > Ondrej > > > > -----Original Message----- > > From: Ondrej Valousek [mailto:ondrej.valou...@s3group.com] > > Sent: Monday, August 06, 2018 9:40 AM > > To: End-user discussions about the System Security Services Daemon > > <sssd-users@lists.fedorahosted.org> > > Subject: [SSSD-users] Re: sssd connecting to two AD domains > > > > Hi, > > No, these are different forests, but a two way trust is established between > > these two. > > Ondrej > > > > -----Original Message----- > > From: Jakub Hrozek [mailto:jhro...@redhat.com] > > Sent: Monday, August 06, 2018 9:36 AM > > To: End-user discussions about the System Security Services Daemon > > <sssd-users@lists.fedorahosted.org> > > Subject: [SSSD-users] Re: sssd connecting to two AD domains > > > > Are mydomain and mydomain2 coming from a different forest? > > > > with id_provider=ad sssd should work fine with domains from the same forest > > and it should pick the right principal. If it doesn’t and setting > > ldap_sasl_authid to shortname$@realm, then there must be a bug in the > > principal selection logic. > > > > > On 30 Jul 2018, at 11:25, Ondrej Valousek <ondrej.valou...@s3group.com> > > > wrote: > > > > > > Ok, I see that it’s probably not supported: > > > https://pagure.io/SSSD/sssd/issue/2078 > > > right? > > > Ondrej > > > > > > From: Ondrej Valousek [mailto:ondrej.valou...@s3group.com] > > > Sent: Monday, July 30, 2018 10:45 AM > > > To: End-user discussions about the System Security Services Daemon > > > <sssd-users@lists.fedorahosted.org> > > > Subject: [SSSD-users] sssd connecting to two AD domains > > > > > > Hi all, > > > > > > I have a machine joined to AD domain “mydomain.com” and there is also > > > domain “mydomain2.com”. The two are connected with full two way trust. > > > > > > SSSD can happily recognize users from “mydomain.com”, but fails with > > > users from “mydomain2.com” - sssd complains that: > > > > > > (Mon Jul 30 08:26:38 2018) [sssd[be[adesto]]] [get_port_status] (0x1000): > > > Port status of port 389 for server 'server.mydomain2.com' is 'not working' > > > (Mon Jul 30 08:26:38 2018) [sssd[be[adesto]]] [get_port_status] (0x0080): > > > SSSD is unable to complete the full connection request, this internal > > > status does not necessarily indicate network port issues. > > > > > > But I can connect to that server with ldapsearch just fine (using a TGT > > > obtained with kinit –k hostname$). > > > > > > Earlier in the logs I spotted that SSSD is trying to obtain TGT with a > > > wrong principal “host/hostname@REALM” instead of “hostname$@REALM”: > > > > > > > > > (Mon Jul 30 08:32:34 2018) [sssd[be[adesto]]] [sdap_get_tgt_recv] > > > (0x0400): Child responded: 14 [Client 'host/hostn...@mydomain.com' > > > not found in Kerberos database], expired on [0] (Mon Jul 30 08:32:34 > > > 2018) [sssd[be[adesto]]] [sdap_kinit_done] (0x0100): Could not get > > > TGT: 14 [Bad address] (Mon Jul 30 08:32:34 2018) [sssd[be[adesto]]] > > > [sdap_cli_kinit_done] (0x0400): Cannot get a TGT: ret > > > [1432158226](Authentication Failed) > > > > > > > > > I am wondering why is SSSD trying now, all of sudden, to obtain a TGT > > > using wrong principal? > > > Using RHEL-7. > > > Thanks, > > > > > > Ondrej > > > ----- > > > > > > The information contained in this e-mail and in any attachments is > > > confidential and is designated solely for the attention of the intended > > > recipient(s). 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