> On 3 Aug 2017, at 10:22, Tristan Bouillon 
> <tristan.bouil...@cheetahdigital.com> wrote:
> 
> Thanks for your time guys.
> 
> Looking through sssd stuff I almost forgot y main goal was to ssh to a server.
> I did a little test with ssh, server and user in the same domain.
> 
> If I do:
> $ ssh server -l tbouillon  # It works
> but:
> $ ssh server -l 'tbouil...@example.com' # Permission denied.
> 
> From early debug it seems like ssh sees my user like
> tbouil...@example.com@example.com on the second line.
> So i should find a way to make ssh understand this is a domain
> extension OR for child.example.com configure the default domain when
> login as example.com
> 

I’ve never seen this issue. I don’t think the quotes are needed, and in my 
environment, this works fine:
ssh localhost -l administra...@win.trust.test
administra...@win.trust.test@localhost's password:
Last login: Mon Aug  7 17:24:19 2017 from ::1
Could not chdir to home directory /home/administra...@win.trust.test: 
Permission denied
-bash: /home/administra...@win.trust.test/.bash_profile: Permission denied
-bash-4.3$ id
uid=1156200500(administrator) gid=1156200513(domain users) 
groups=1156200513(domain users),1156200512(domain admins),1156200518(schema 
admins),1156200519(enterprise admins),1156200520(group policy creator 
owners),1156200572(denied rodc password replication group) 
context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
-bash-4.3$

What is the output of “id tbouil...@example.com <mailto:tbouil...@example.com>” 
?

> On 2 August 2017 at 19:40, Michal Židek <mzi...@redhat.com> wrote:
>> On 08/02/2017 06:01 PM, Tristan Bouillon wrote:
>>> 
>>> OK, tried to be clear but looks like I'm not :)
>>> No big deal let's try again
>>> 
>>> Use case
>>> I'm connected to a linux jumpbox (let's say jb.example.com) which is
>>> in domain example.com.
>>> I do: "$ kinit tbouillon" and get a working ticket. I can connect with
>>> user tbouillon via ssh to all servers in example.com domain via SSSD.
>>> Now I have this server which is in child.example.com, and I want to
>>> connect from jb.example.com to server1.child.example.com
>>> 
>>> I do tbouil...@jb.example.com $ ssh server1.child.example.com -l
>>> 'tbouil...@example.com'
>>> I get this result: Permission denied
>>> (publickey,gssapi-keyex,gssapi-with-mic).
>> 
>> 
>> I am not completely sure, but this looks like wrong sshd configuration on
>> the server1.child.example.com. Did you do something with the sshd
>> configuration there? SSH tried to authenticate you using your public
>> key but failed to do so.
>> 
>> Sorry, I can not help you with OpenSSH much, but it does not look like
>> you are facing an SSSD issue.
>> 
>> 
>>> Obvisouly I expected a shell like: tbouil...@server1.child.example.com
>>> 
>>> So the ssh command doesn't work well also when on
>>> server1.child.examplel.com I get
>>> kinit tbouil...@example.com
>>> Password for tbouil...@example.com:
>>> kinit: KDC reply did not match expectations while getting initial
>>> credentials
>>> 
>>> Here is the sssd.conf, sshd.log from server1, sssd.log
>>> 
>>> On 2 August 2017 at 16:41, Michal Židek <mzi...@redhat.com> wrote:
>>>> 
>>>> Hi Tristan,
>>>> 
>>>> I understand your topology from what you wrote, but I still
>>>> do not know what is your problem. See question inline.
>>>> 
>>>> 
>>>> On 08/02/2017 03:48 PM, Tristan Bouillon wrote:
>>>>> 
>>>>> 
>>>>> Hi Michal
>>>>> Thanks for answering
>>>>> 
>>>>> For the missing part :
>>>>> OS : Centos 7.3 with latest updates
>>>>> SSSD: 1.14.0 release 43
>>>>> 
>>>>> So, I removed all traces of server1 (which is indeed a linux host)
>>>>> from AD and tried to re join with the realm command.
>>>>> 
>>>>> Good points:
>>>>> The sssd.conf provided by the realm command was not far from the one I
>>>>> had. I guess my understanding of how sssd and kerberos work together
>>>>> wasn't that bad.
>>>>> it added:
>>>>>    realmd_tags = manages-system joined-with-samba
>>>>>    ldap_id_mapping = True
>>>>> 
>>>>> Now I have the same error basicly. Reminder, I want my server in
>>>>> child.example.com but users are in parent domain example.com
>>>>> My server1 has successfully joined domain child.example.com and has a
>>>>> keytab
>>>>> when trying to connect sssd succesffuly find the multiple AD servers
>>>>> and SSSD ad backend is seen as online.
>>>>> 
>>>>> [ad_get_client_site_done] (0x0400): Found forest: example.com
>>>>> [ad_srv_plugin_site_done] (0x0400): About to discover primary and backup
>>>>> servers
>>>>> [fo_add_server_to_list] (0x0400): Inserted primary server
>>>>> 'ff1pdc01.child.example.com:3268' to service 'AD_GC' # Domain
>>>>> controller for child.example.com
>>>>> [fo_add_server_to_list] (0x0400): Inserted primary server
>>>>> 'ff1gdc01.example.com:3268' to service 'AD_GC'       # Domain
>>>>> controller for example.com
>>>>> 
>>>>> After that I have some sucessful ldap connection to different AD
>>>>> servers and then it searches for my user. But it looks like the search
>>>>> never goes to domain child.example.com
>>>>> and after that it fails because the user doesn't exists in
>>>>> child.example.com
>>>> 
>>>> 
>>>> 
>>>> For what purpose is something searching for your user? Again... please
>>>> tell me what is not working for you. Below you say that 'id' lookup is
>>>> successful, that means SSSD's NSS responder is working. What command is
>>>> not working for you (su, ssh, getent, id, etc.)?
>>>> 
>>>> Sorry, I am simple person :)
>>>> 
>>>> Please answer in format:
>>>> I am doing this command: (for example) getent passwd us...@example.com
>>>>                          (or) ssh localhost -l us...@example.com
>>>> I get this result: ...
>>>> I expected this result: ...
>>>> Here is my sssd.conf:
>>>> Logs from /var/log/sssd/ are in attachment.
>>>> 
>>>> 
>>>>> 
>>>>> [sdap_save_user] (0x1000): Mapping user [tbouil...@example.com]
>>>>> objectSID [S-1-5-21-481120694-805105173-3562786754-5671] to unix ID
>>>>> [sdap_save_user] (0x0400): Original memberOf is not available for
>>>>> [tbouil...@example.com].
>>>>> [sdap_save_user] (0x0400): Adding user principal [tbouil...@ccmp.intl]
>>>>> to attributes of [tbouil...@example.com].
>>>>> [sdap_save_user] (0x0400): Storing info for user tbouil...@example.com
>>>>> [sysdb_search_by_name] (0x0400): No such entry
>>>>> [sysdb_store_user] (0x1000): User tbouil...@example.com does not exist.
>>>>> 
>>>>> On a classical shell if I do: "$ id user1.example.com" I have a correct
>>>>> answer.
>>>>> 
>>>>> On 2 August 2017 at 13:19, Michal Židek <mzi...@redhat.com> wrote:
>>>>>> 
>>>>>> 
>>>>>> Hi,
>>>>>> 
>>>>>> You did not mention what SSSD version and what OS you are using.
>>>>>> I have few questions, see inline.
>>>>>> 
>>>>>> On 08/02/2017 10:59 AM, Tristan Bouillon wrote:
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> Hi
>>>>>>> 
>>>>>>> I have this case I'm working on and it's driving me crazy. I try to
>>>>>>> setup something like this:
>>>>>>> 
>>>>>>> AD setup is like this with be-directional approbation:
>>>>>>> - example.com
>>>>>>> \-- chlld.example.com >
>>>>>>> Have users registered in example.com => us...@example.com
>>>>>>> computers are registered in child.eample.com =>
>>>>>>> serv...@child.example.com
>>>>>>> 
>>>>>>> I want to connect with  user1 to server1 with ssh and sssd.
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> So, server1 is a Linux host, right? You can add it to the
>>>>>> child.example.com domain using 'realm join CHILD.EXAMPLE.COM'. It
>>>>>> will automatically add server1 to the child.example.com
>>>>>> domain (so it did not have to be there before).
>>>>>> 
>>>>>>> Before any debug process I want to make sure this is possible because
>>>>>>> i'm running in circle.
>>>>>>> 
>>>>>>> When setting up sssd et krb5 confs with child.example.com:
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> IF you set up SSSD manually there is a lot of room for errors,
>>>>>> I recommend using realm join and then just tweak the sssd.conf
>>>>>> in case something does not work the way you want.
>>>>>> 
>>>>>>> -- sssd nss says: example.com is created as a subdomain of
>>>>>>> child.example.com
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> This is OK. The 'subdomain' may be a little bit confusing, because this
>>>>>> refers to an internal C code structure that represents a trusted
>>>>>> domain,
>>>>>> not an actual subdomain in the DNS sense. IIRC we changed the message
>>>>>> recently to be less confusing.
>>>>>> 
>>>>>>> -- but AD backend is online for child.example.com and i can query it
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> You mean SSSD AD backend is running on the Linux host server1, right?
>>>>>> 
>>>>>>> -- the query for us...@example.com works great but the AD server in
>>>>>>> child.example.com does not know the user and can't query his master AD
>>>>>>> server.
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> I do not understand what you mean here. So, on the Linux host
>>>>>> (server1),
>>>>>> if you query the us...@example.com, user info is returned. So what
>>>>>> operation on the Linux host is not working? (getent, su, ssh ... copy
>>>>>> paste the problematic commands and see our troubleshooting page).
>>>>>> 
>>>>>>> 
>>>>>>> When setting up sssd et krb5 confs with example.com
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> Again, realm join should set up everything for you. If you join the
>>>>>> EXAMPLE.COM realm then the server1 host will be added to the
>>>>>> example.com
>>>>>> domain (you said you wanted them in the child.example.com, so I am
>>>>>> not sure if this what you want to do, but you can try it if it works
>>>>>> for you).
>>>>>> 
>>>>>>> -- it attempts kinit with   host/server1.child.example.com and fails
>>>>>>> to get a tgt. AD is set to offline and it cannot query it.
>>>>>>> 
>>>>>>> When trying to mix up theses solutions I find something similar to the
>>>>>>> cases above.
>>>>>>> If it is possible can someone point me towards the configuration I'm
>>>>>>> suppose to make.
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> Try using the realm join command from the Linux host to avoid hand
>>>>>> crafting the configuration. Note that the AD domain controller for
>>>>>> the domain you are joining to must be DNS resolvable from the Linux
>>>>>> host.
>>>>>> 
>>>>>>> 
>>>>>>> Don't know if it's the place but GG for the debugging options provides
>>>>>>> with SSSD, it is clear and powerful.
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>>>>>>> 
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>>>>> 
>>>>> 
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>>>>> 
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