[Samba] Can't join to Domain
rpenny at samba.org
Fri Aug 4 10:59:59 UTC 2023
On 04/08/2023 11:50, basti via samba wrote:
> On 04.08.23 12:37, Rowland Penny via samba wrote:
>> On 04/08/2023 11:21, basti via samba wrote:
>>> yesterday I setup a AD DC.
>>> Today I try to add a Fileserver to the AD.
>>> security = ADS
>>> workgroup = NET
>>> realm = NET.EXAMPLE.COM
>>> log file = /var/log/samba/%m.log
>>> log level = 1
>>> # Default ID mapping configuration for local BUILTIN accounts
>>> # and groups on a domain member. The default (*) domain:
>>> # - must not overlap with any domain ID mapping configuration!
>>> # - must use a read-write-enabled back end, such as tdb.
>>> idmap config * : backend = tdb
>>> idmap config * : range = 3000-7999
>>> # - You must set a DOMAIN backend configuration
>>> # idmap config for the NET domain
>>> idmap config NET:backend = ad
>>> idmap config NET:schema_mode = rfc2307
>>> idmap config NET:range = 10000-999999
>>> idmap config NET:unix_nss_info = yes
>>> vfs objects = acl_xattr
>>> map acl inherit = yes
>>> store dos attributes = yes
>>> comment = Home Directories
>>> browseable = no
>>> root at fs:/var/lib/samba# cat /etc/krb5.conf
>>> default_realm = NET.EXAMPLE.COM
>>> dns_lookup_realm = false
>>> dns_lookup_kdc = true
>>> root at fs:/var/lib/samba#
>>> root at fs:/var/lib/samba# net ads join -U Administrator
>>> Password for [NET\Administrator]:
>>> Failed to join domain: failed to lookup DC info for domain
>>> 'NET.EXAMPLE:COM' over rpc: Indicates the SID structure is not valid.
>>> DNS also works as expected.
>>> All tests done on
>>> are OK
>> I take it this is 4.17.9 on bookworm (as your DC was).
>> Have you added any rfc2307 attributes to AD ?
>> If you temporarily change to the 'rid' idmap backend, does the join
>> then work ?
> Yes is is bookworm, sorry.
> I setup DC with --use-rfc2307
> temporarily change to the 'rid' idmap backend did not help, the error is
> the same.
> Somethink seems wrong here:
> root at dc1:~# net rpc info -U Administrator
> Password for [NET\Administrator]:
> Could not connect to server DC1
> Connection failed: NT_STATUS_INVALID_SID
> root at dc1:~#
I cannot remember ever having that problem.
Is Samba running at this point ? if it is, stop it and try the join again.
Check that you can ping the DC.
Check that /etc/resolv.conf is using the DC as its first nameserver
Check that /etc/hosts is set up correctly
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