[Samba] New samba server

[Serdge V. Pechenko]

<sgmayo at mail.bloomfield.k12.mo.us> писал(а) в своём письме Thu, 30 Jul  
2009 08:46:50 +0700:

>
> sgmayo at mail.bloomfield.k12.mo.us wrote:
>>
>> sgmayo at mail.bloomfield.k12.mo.us wrote:
>>>
>>> sgmayo at mail.bloomfield.k12.mo.us wrote:
>>>>
>>>> sgmayo at mail.bloomfield.k12.mo.us wrote:
>>>>> I did not get this finished last summer, so decided to just wait and
>>>>> do
>>>>> it this summer.  I have setup my new samba server and was trying to
>>>>> get
>>>>> some things tweaked to the way that I want them.  I thought that I  
>>>>> had
>>>>> asked this before and that I could do it, but it seems that it does
>>> not >> work.
>>>>>
>>>>> My new server is running as a domain server just like the old.  It  
>>>>> has
>>>>> the same domain name and I change the the SID using net setlocalsid
>>> to >> the same sid number as my old server.  This new server is in a
>>> test
>>>>> environment right now.
>>>>>
>>>>> I was hoping that my old machines could just log into this server
>>>>> without having to get out of the domain and then rejoin it, but that
>>>>> does not work.  It tells me that the domain is not there until I get
>>> out >> of the old one and then rejoin the new one.  Is that how it has
>>> to
>>>>> work?  I was hoping I would not have to do that if I left the domain
>>>>> name the same and set the SID on the new server.  I just want to make
>>>>> sure I am not missing something before I go around to all 400
>>>>> computers
>>>>> on campus and have them removed and rejoined to the domain.
>>>>
>>>> Mr. Terpstra gave me a bit of help.  I had done nothing to set my
>>>> domainsid, but after doing the following:
>>>>
>>>> net getlocalsid
>>>> net getdomainsid
>>>>
>>>> The values are the same on both the old and the new samba server.   
>>>> This
>>>> new server will take the place of my old one.  Right now it is on a
>>>> network with nothing else on it besides one of my old windows clients.
>>>> If
>>>> I remove one of my old clients from the domain and then re-add it,  
>>>> then
>>>> it
>>>> logs in just fine.  If I take an old client from my current network  
>>>> and
>>>> put it on this new network and try to login to the new samba server
>>>> then
>>>> it gives me the typical:
>>>>
>>>> "Windows cannot connect to the domain either because the domain
>>>> controller
>>>> is down or otherwise unavailable, or because your computer account was
>>>> not
>>>> found. Please try again later. If this message continues to appear
>>>> contact
>>>> your System Administrator for assistance."
>>>>
>>>> The name of the Windows machine is business18 so I did an
>>>> 'smbldap-adduser
>>>> -w business18$' to make sure the machine account was added in to the
>>>> directory, but the error was the same.  I even changed the uid of the
>>>> machine account to match the old one in case that was coming into  
>>>> play.
>>>>
>>>> Here is my samba config in case someone sees something that I don't.
>>>> Which is quite possible since I forget more than I learn it seems. :)
>>>> I'll be reading on the How-To to see if I can pick anything else up.
>>>>
>>>> [global]
>>>> 	workgroup = BES
>>>> 	server string = Samba Server Version %v
>>>> 	netbios name = SCHOOL
>>>>
>>>> 	interfaces = lo eth0
>>>> 	hosts allow = 127. 10.0. 19 2.168.0. localhost
>>>> 	ldap passwd sync = Yes
>>>> 	ldap admin dn = cn=Manager,dc=school,dc=bloomfield.k12.mo.us
>>>> 	ldap suffix = dc=school1,dc=bloomfield.k12.mo.us
>>>> 	ldap group suffix = ou=Groups
>>>> 	ldap user suffix = ou=Users
>>>> 	ldap machine suffix = ou=Computers
>>>> 	ldap idmap suffix = ou=Users
>>>> 	add machine script = /usr/sbin/smbldap-useradd -w "%u"
>>>> 	add user script = /usr/sbin/smbldap-useradd -m "%u"
>>>> 	ldap delete dn = Yes
>>>> 	add group script = /usr/sbin/smbldap-groupadd -p "%g"
>>>> 	add user to group script = /usr/sbin/smbldap-groupmod -m "%u" "%g"
>>>> 	delete user from group script = /usr/sbin/smbldap-groupmod -x "%u"
>>>> "%g"
>>>> 	set primary group script = /usr/sbin/smbldap-usermod -g "%g" "%u"
>>>>
>>>> 	Dos charset = 850
>>>> 	Unix charset = ISO8859-1
>>>>
>>>>
>>>> 	log file = /var/log/samba/log.%m
>>>> 	max log size = 50
>>>>
>>>> 	security = user
>>>> 	passdb backend = ldapsam:ldap://127.0.0.1
>>>>
>>>> 	domain master = yes
>>>> 	domain logons = yes
>>>>
>>>> 	local master = yes
>>>> 	os level = 65
>>>> 	preferred master = yes
>>>>
>>>> 	wins support = yes
>>>> 	dns proxy = no
>>>>
>>>> 	load printers = yes
>>>> 	cups options = raw
>>>>
>>>> [homes]
>>>> 	comment = Home Directories
>>>> 	browseable = no
>>>> 	writable = yes
>>>>
>>>> [printers]
>>>> 	comment = All Printers
>>>> 	path = /var/spool/samba
>>>> 	browseable = no
>>>> 	guest ok = no
>>>> 	writable = no
>>>> 	printable = yes
>>>>
>>>
>>> Well, I am getting ready to take the other server offline and put the
>>> new
>>> one in place.  I am planning on just removing all my machines from the
>>> domain and adding them back in to get everything to work, though I  
>>> would
>>> prefer not to do this.
>>>
>>> I am just not sure where else to look.  Thought I would post one last
>>> time.  I figure that most of this comes from me not knowing a lot about
>>> ldap and how samba interacts with it.  I am still learning.
>>>
>>> The passwords on the new server are different than the old.  Does that
>>> have any affect on it?  Do the passwords have to be the same when it
>>> comes
>>> to the new machine being added in?  I did not think that would matter,
>>> but
>>> maybe it does.  If it does then that would mean taht the XP machines
>>> somehow saved the password that was used when the machine joined the
>>> domain.
>>>
>>> Thanks for any info.  I'll play with this some tonight, but if I don't
>>> figure it out, I'll just do as I planned and remove all mahcines from
>>> the
>>> domain and add them back in.
>>
>> I have messed with this for another 3 hours and have searched everything
>> that I know to search on the net.  Found lots of good hints, but nothing
>> has worked.  I was going to maybe try to slapcat just one computer  
>> account
>> and then slapadd it back in to see if that would work and if it would  
>> then
>> I would do all computer accounts.
>>
>> For some reason there is no '-a' version on my old server even though  
>> the
>> manpage shows slapcat(8C) on both servers.  I did a slap cat and just
>> deleted everything down to and past the computers entry, but then  
>> noticed
>> the creatorsName and the modifiersName.
>>
>> Those are both:
>> cn: Manager, dc=old-server-name,dc=org
>>
>> My new server has a different name, so when I slapadd this back in, is
>> that going to cause problems?
>>
>> I know that is more of an ldap question, but thought someone could
>> enlighten me on it here.  If I could just get this server to accept
>> computers without removing/re-adding to the domain, it would save me a
>> world of time.
>>
>
> Well, I decided to try it so I changed the old-server-name to the
> new-server-name in my ldif file and slapadded it into my directory.  I  
> get
> the same thing that the domain cannot be found or the machine account is
> missing.  I will just add the new server in tomorrow and then go around
> backing up profiles, removing the machine from the domain and then add it
> back in.  I like samba, but it hates me I guess. ;)
>
> Thanks for the help.
>
If you want client machines to be able to log in the old domain, you  
really should copy the user database "one-by-one". Old database contains  
accounts like "MACHINE$", and those entries have own password. Those  
passwords are stored in the registry of a client's system. Of course, if  
you simply backup old database, slapcat it to the file, change the "cn"  
entries in the file and slapadd it, the resulting user database from the  
Samba's point of view will have all the previous accounts and passwords  
just in place. This IS the thing you want, don't you? I've got some  
experience of changing the cn attribute in LDAP, but the network was  
rather much smaller (about 10 computers). I do not remeber exactly, but  
there exists an option to reset Samba password for machine account.

Serdge