No, the IPA and AD domains are separate, but do have a cross-trust.

We are running IPA 4.4.  This all works fine on Fedora 25 systems.

On Mon, Aug 14, 2017 at 12:14 PM, Alexander Bokovoy <aboko...@redhat.com>
wrote:

> On ma, 14 elo 2017, Steve Weeks via FreeIPA-users wrote:
>
>> I'm having trouble logging in via the gui console to an Ubuntu 16 Desktop
>> host that is affiliated with a FreeIPA server, which in turn is affiliated
>> with an Active Directory server.
>>
>> When I try to log in with debugging turned up on the SSSD I see an
>> underlying error in the krb5_child log file: Cannot find KDC for realm "
>> EXAMPLE.COM" while getting credentials for host/
>> myhost.example....@example.com
>>
>> Following an example from the freeipa-users mailing list, I am just
>> working
>> with kinit and kvno to identify the underlying problem. I get the same
>> error, which I suppose is good. But I don't know how to resolve it from
>> here. The transcript is below. On the first try at kvno, I get the same
>> error. On the second try, it works. Any idea why? I suspect the failure on
>> the first try is the real problem with authentication from the console.
>>
>> Any hints what to try next?
>>
> Do you really have AD as a subdomain of IPA?
>
> I suspect you hit https://bugzilla.redhat.com/show_bug.cgi?id=1421869
> There is no currently resolution for this. If you'd use different
> domain trees (example.com v example.org) it would work. It would work
> also for AD owning example.com and IPA being in ipa.example.com.
>
>
>> Thanks
>>
>> ----- /etc/krb5.conf -----
>> #File modified by ipa-client-install
>>
>> includedir */var/lib/sss/pubconf/krb5.include.d/*
>>
>>
>> [libdefaults]
>>  default_realm = EXAMPLE.COM
>>  dns_lookup_realm = true
>>  dns_lookup_kdc = true
>>  rdns = false
>>  ticket_lifetime = 24h
>>  forwardable = true
>>  udp_preference_limit = 0
>>  default_ccache_name = KEYRING:persistent:%{uid}
>>
>>
>> [realms]
>>  EXAMPLE.COM = {
>>    pkinit_anchors = FILE:/etc/ipa/ca.crt
>>
>>  }
>>
>>
>> [domain_realm]
>>  .example.com = EXAMPLE.COM
>>  example.com = EXAMPLE.COM
>>
>>
>>
>> ----- Transcript -----
>>
>>
>> $ kdestroy -A
>>
>>
>> $ kinit adu...@ad.example.com
>> Password for adu...@ad.example.com:
>>
>>
>> $ klist
>> Ticket cache: KEYRING:persistent:1000:1000
>> Default principal: adu...@ad.example.com
>>
>> Valid starting       Expires              Service principal
>> 08/14/2017 09:59:22  08/14/2017 19:59:22  krbtgt/AD.EXAMPLE.COM@AD.EXAMP
>> LE.COM
>>         renew until 08/15/2017 09:59:17
>>
>>
>> $ KRB5_TRACE=/dev/stdout kvno host/myhost.example....@example.com
>> [1994] 1502719211.714019: Getting credentials adu...@ad.example.com ->
>> host/myhost.example....@example.com using ccache
>> KEYRING:persistent:1000:1000
>> [1994] 1502719211.714237: Retrieving adu...@ad.example.com ->
>> host/myhost.example....@example.com from KEYRING:persistent:1000:1000
>> with result: -1765328243/Matching credential not found
>> [1994] 1502719211.714318: Retrieving adu...@ad.example.com ->
>> krbtgt/example....@example.com from KEYRING:persistent:1000:1000 with
>> result: -1765328243/Matching credential not found
>> [1994] 1502719211.714376: Retrieving adu...@ad.example.com ->
>> krbtgt/ad.example....@ad.example.com from KEYRING:persistent:1000:1000
>> with result: 0/Success
>> [1994] 1502719211.714395: Starting with TGT for client realm:
>> adu...@ad.example.com -> krbtgt/ad.example....@ad.example.com
>> [1994] 1502719211.714439: Retrieving adu...@ad.example.com ->
>> krbtgt/example....@example.com from KEYRING:persistent:1000:1000 with
>> result: -1765328243/Matching credential not found
>> [1994] 1502719211.714456: Requesting TGT
>> krbtgt/example....@ad.example.com using TGT
>> krbtgt/ad.example....@ad.example.com
>> [1994] 1502719211.714486: Generated subkey for TGS request:
>> aes256-cts/020C
>> [1994] 1502719211.714525: etypes requested in TGS request: aes256-cts,
>> aes128-cts, des3-cbc-sha1, rc4-hmac, camellia128-cts, camellia256-cts
>> [1994] 1502719211.714605: Encoding request body and padata into FAST
>> request
>> [1994] 1502719211.714662: Sending request (1686 bytes) to AD.EXAMPLE.COM
>> [1994] 1502719211.717532: Resolving hostname ad-host.ad.example.com.
>> [1994] 1502719211.719053: Sending initial UDP request to dgram
>> 192.168.1.2:88
>> [1994] 1502719211.742171: Received answer (309 bytes) from dgram
>> 192.168.1.2:88
>> [1994] 1502719211.743066: Response was not from master KDC
>> [1994] 1502719211.743082: Decoding FAST response
>> [1994] 1502719211.743109: Request or response is too big for UDP;
>> retrying with TCP
>> [1994] 1502719211.743113: Sending request (1686 bytes) to
>> AD.EXAMPLE.COM (tcp only)
>> [1994] 1502719211.743971: Resolving hostname ad-host.ad.example.com.
>> [1994] 1502719211.744908: Initiating TCP connection to stream
>> 192.168.1.2:88
>> [1994] 1502719211.764062: Sending TCP request to stream 192.168.1.2:88
>> [1994] 1502719211.805666: Received answer (1643 bytes) from stream
>> 192.168.1.2:88
>> [1994] 1502719211.805678: Terminating TCP connection to stream
>> 192.168.1.2:88
>> [1994] 1502719211.806709: Response was not from master KDC
>> [1994] 1502719211.806735: Decoding FAST response
>> [1994] 1502719211.806789: FAST reply key: aes256-cts/820C
>> [1994] 1502719211.806808: TGS reply is for adu...@ad.example.com ->
>> krbtgt/example....@ad.example.com with session key aes256-cts/B56C
>> [1994] 1502719211.806822: TGS request result: 0/Success
>> [1994] 1502719211.806826: Storing adu...@ad.example.com ->
>> krbtgt/example....@ad.example.com in KEYRING:persistent:1000:1000
>> [1994] 1502719211.806912: Received TGT for service realm:
>> krbtgt/example....@ad.example.com
>> [1994] 1502719211.806915: Requesting tickets for
>> host/myhost.example....@example.com, referrals on
>> [1994] 1502719211.806924: Generated subkey for TGS request:
>> aes256-cts/D365
>> [1994] 1502719211.806940: etypes requested in TGS request: aes256-cts,
>> aes128-cts, des3-cbc-sha1, rc4-hmac, camellia128-cts, camellia256-cts
>> [1994] 1502719211.806968: Encoding request body and padata into FAST
>> request
>> [1994] 1502719211.806994: Sending request (1676 bytes) to EXAMPLE.COM
>> (tcp only)
>> kvno: Cannot find KDC for realm "EXAMPLE.COM" while getting
>> credentials for host/myhost.example....@example.com
>>
>>
>> $ KRB5_TRACE=/dev/stdout kvno host/myhost.example....@example.com
>> [1995] 1502719219.601419: Getting credentials adu...@ad.example.com ->
>> host/myhost.example....@example.com using ccache
>> KEYRING:persistent:1000:1000
>> [1995] 1502719219.601516: Retrieving adu...@ad.example.com ->
>> host/myhost.example....@example.com from KEYRING:persistent:1000:1000
>> with result: -1765328243/Matching credential not found
>> [1995] 1502719219.601556: Retrieving adu...@ad.example.com ->
>> krbtgt/example....@example.com from KEYRING:persistent:1000:1000 with
>> result: 0/Success
>> [1995] 1502719219.601559: Found cached TGT for service realm:
>> adu...@ad.example.com -> krbtgt/example....@ad.example.com
>> [1995] 1502719219.601561: Requesting tickets for
>> host/myhost.example....@example.com, referrals on
>> [1995] 1502719219.601573: Generated subkey for TGS request:
>> aes256-cts/5EC1
>> [1995] 1502719219.601592: etypes requested in TGS request: aes256-cts,
>> aes128-cts, des3-cbc-sha1, rc4-hmac, camellia128-cts, camellia256-cts
>> [1995] 1502719219.601639: Encoding request body and padata into FAST
>> request
>> [1995] 1502719219.601666: Sending request (1676 bytes) to EXAMPLE.COM
>> [1995] 1502719219.603587: Resolving hostname idsg-test16.example.com.
>> [1995] 1502719219.604856: Sending initial UDP request to dgram
>> 192.168.1.1:88
>> [1995] 1502719219.621855: Received answer (1680 bytes) from dgram
>> 192.168.1.1:88
>> [1995] 1502719219.622767: Response was not from master KDC
>> [1995] 1502719219.622783: Decoding FAST response
>> [1995] 1502719219.622834: FAST reply key: aes256-cts/14A3
>> [1995] 1502719219.622852: TGS reply is for adu...@ad.example.com ->
>> host/myhost.example....@example.com with session key aes256-cts/B41C
>> [1995] 1502719219.622866: TGS request result: 0/Success
>> [1995] 1502719219.622868: Received creds for desired service
>> host/myhost.example....@example.com
>> [1995] 1502719219.622871: Storing adu...@ad.example.com ->
>> host/myhost.example....@example.com in
>> KEYRING:persistent:1000:1000host/myhost.example....@example.com: kvno
>> = 7
>>
>
> _______________________________________________
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>>
>
>
> --
> / Alexander Bokovoy
>
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