[Samba] AIX 5.3 Active Directory Synchronisation using Winbind
Craig Green
I have followed various tech articles and installation notes that I have found on the web. They are all basically the same in that they suggest to either compile the required components from scratch or to use the precompiled packages from the pware.hvcc.edu site.
I originally tried compiling from scratch/source which I have always done in the past when using samba as a NT4 domain member. This is the first time I have tried integrating into MS AD.
My latest attempt is with using the pre compiled packages from the hvcc site.
I run into the same issues with both types of setup (i.e.: compiling samba from scratch or using the pware53 packages).
When I have samba installed and joined to the AD the following commands work as expected.
wbinfo -u
wbinfo -g
wbinfo -a username
However if I try and telnet to the AIX server or connect to a share the AD is not using for authenticating the password. When trying a telnet login I get back “3004-007 You entered an invalid login name or password.”
Following is a list of what I have installed etc.
AIX: 5.3 ML-11-03-1013
pware53.base.rte 5.3.0.0 COMMITTED pWare base for 5.3
pware53.bdb.rte 4.6.21.4 COMMITTED Berkeley DB 4.6.21
pware53.cyrus-sasl.rte 2.1.22.2 COMMITTED cyrus-sasl 2.1.22
pware53.gettext.rte 0.17.0.0 COMMITTED GNU gettext 0.17
pware53.krb5.rte 1.7.1.0 COMMITTED MIT Kerberos 1.7.1
pware53.libiconv.rte 1.13.1.0 COMMITTED GNU libiconv 1.13.1
pware53.ncurses.rte 5.7.0.1 COMMITTED ncurses 5.7.0.1
pware53.openldap.rte 2.4.19.0 COMMITTED OpenLDAP 2.4.19
pware53.openssl.rte 0.9.8.13 COMMITTED OpenSSL 0.9.8m
pware53.popt.rte 1.10.4.0 COMMITTED popt 1.10.4
pware53.readline.rte 6.1.0.0 COMMITTED GNU readline 6.1
pware53.samba.rte 3.5.0.0 COMMITTED Samba 3.5.0
pware53.zlib.rte 1.2.3.0 COMMITTED zlib 1.2.3
The kerberos krb5.conf. Below is the one I'm using in my environment
--- krb5.conf - start ---
[libdefaults]
default_realm = TESTREALM.COM.AU
dns_lookup_realm = false
dns_lookup_kdc = false
ticket_lifetime = 24h
forwardable = yes
[realms]
TESTREALM.COM.AU = {
kdc = ad01.testrealm.com.au:88
default_domain = testrealm.com.au
admin_server = ad01.testrealm.com.au:749
}
[domain_realm]
.kerberos.server = TESTREALM.COM.AU
.domain.com = TESTREALM.COM.AU
domain.com = TESTREALM.COM.AU
.testrealm.com.au = TESTREALM.COM.AU
testrealm.com.au = TESTREALM.COM.AU
[logging]
default = FILE:/var/log/krb5/krb5libs.log
kdc = FILE:/var/log/krb5/krb5kdc.log
admin_server = FILE:/var/log/krb5/kadmind.log
[appdefaults]
pam = {
debug = false
ticket_lifetime = 36000
renew_lifetime = 36000
forwardable = true
krb4_convert = false
}
--- krb5.conf - ends ---
I can execute $> kinit [AD username] and this asks me for a password, I fill that in and if everything goes well.
Here is the global section of my smb.conf file.
--- smb.conf [global] section - start ---
comment = AIX Internal Services - Samba %v
workgroup = TESTREALM
netbios name = %h
security = ADS
realm = TESTREALM.COM.AU
encrypt passwords = Yes
password server = ab01
username map = /etc/samba/lib/smbusers.map
log file = /etc/samba/var/%m.log
log level = 2
interfaces = en0 lo0
bind interfaces only = yes
name resolve order = host wins bcast
keepalive = 30
printcap name = /etc/qconfig
os level = 0
lm announce = False
preferred master = False
local master = No
domain master = False
wins server = 172.16.xxx.yyy ← I have obfuscated the last two octets.
guest account = guest
admin users = sh, root, cgr
read only = No
create mask = 0770
directory mask = 0770
map archive = No
follow symlinks = No
dont descend = /dev,/proc,/root,/stand
load printers = no
passdb backend = tdbsam
smb passwd file = /etc/samba/private/tdbsam
unix extensions = no
winbind use default domain = yes
idmap uid = 10000-200000
idmap gid = 10000-200000
auth methods = winbind
winbind enum users = yes
winbind enum groups = yes
--- smb.conf [globa] section - end ---
I can join the AIX server to the AD domain using
$> net ads join -U[AD username]
Enter [AD username]'s password:
Using short domain name -- TESTREAM
Joined 'AIXSERVER' to realm 'testrealm.com.au'
$>
I can then start nmbd, smbd and winbindd as daemons.
I can then do a query to the Ad server like this $> wbinfo -u or $> wbinfo -g and I get back a complete list of the users and groups in the domain. I can also use wbinfo -a username I get prompted for the password and when I enter the relevant AD password and it says it can authenticate.
So at this point, it appears that the server is authenticating with AD, so to make it available when logging into the box I have changed the default user stanza and the login methods. That is I edited the /etc/security/user file and changed the SYSTEM and registry variables to:
SYSTEM = "WINBIND or compat"
registry = WINBIND
I also edited the /usr/lib/security/methods.cfg and added at the end:
WINBIND:
program = /usr/lib/security/WINBIND
options = authonly
Hopefully I am telling AIX, that from now on it should use winbind as the authentication method for users (default users). Users that are already defined on the system and are not on AD will be able to log in. I also left the compat method on the default stanza so if winbind fails it will check locally.
At this point I have tried telnet from another AIX server and also from a PC to see if I can log in using the AD account and password. I understand that I should be able to log in. I have manually created the relevant home directory that samba expects to find.
I hope the above will help someone understand what I have done and hopefully what I need to do to resolve my issue(s).
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John Welch
> Date: Thu, 1 Apr 2010 16:28:11 +1100
> From: Craig Green <cgr...@ultradata.com.au>
> To: "'sa...@lists.samba.org'" <sa...@lists.samba.org>
> Subject: [Samba] AIX 5.3 Active Directory Synchronisation using
> Winbind
> Message-ID:
>
> <D53959C7005777449E60...@grey.ultradata.com.au>
> Content-Type: text/plain; charset="iso-2022-jp"
>
> I have been trying to get AIX 5.3 ML-11 integrated with MS AD (MS-2003
> with SP2 and SFU 3.5). It has given me a few y hairs. I have not been
> able to get it to function correctly.
>
> I have followed various tech articles and installation notes that I
> have found on the web. They are all basically the same in that they
> suggest to either compile the required components from scratch or to
> use the precompiled packages from the pware.hvcc.edu site.
>
> I originally tried compiling from scratch/source which I have always
> done in the past when using samba as a NT4 domain member. This is the
> first time I have tried integrating into MS AD.
>
> My latest attempt is with using the pre compiled packages from the
> hvcc site.
>
> I run into the same issues with both types of setup (i.e.: compiling
> samba from scratch or using the pware53 packages).
>
> When I have samba installed and joined to the AD the following
> commands work as expected.
> wbinfo -u
> wbinfo -g
> wbinfo -a username
>
> However if I try and telnet to the AIX server or connect to a share
> the AD is not using for authenticating the password. When trying a
> password.?
Hi Craig,
Not sure how much I'll be able to help, but we are using Samba/Winbind on an AIX machine in an Active Directory 2003 environment, so I figured I would at least pass along our setup and maybe it will trigger something that will help you solve your problem.
A couple of differences in our environment... We are running AIX 6.1.2 and Samba 3.4.5, which was the latest available from the hvcc.edu site when I upgraded a few months back. We are only using Samba/Winbind for files sharing with Windows clients; not for user log-in authentication. We also use DOMAIN level security mode in smb.conf, as opposed to ADS mode.
I guess my first question is do you really need ADS security mode? We have integrated both Linux and AIX servers into our Active Directory environment for several years now (upgrading from NT environment) and have always stuck with DOMAIN mode. I tried ADS mode a few times and ran into some issues. I think this might be easier now, but have not had the time nor inclination to mess with a something that has been working fine.
I know one issue I ran into when I recently upgraded Samba on the AIX box was that the WINBIND file in /usr/lib/security was a symbolic link that was not linked to the correct version of Samba. Have you looked at this file and verified that it is correct?
Hope this helps a little.
John
William Jojo
---- Original message ----
>Date: Fri, 2 Apr 2010 08:15:38 -0400 (EDT)
>From: John Welch <jwe...@brosco.com>
>Subject: Re: [Samba] AIX 5.3 Active Directory Synchronisation using Winbind
>To: cgr...@ultradata.com.au
>Cc: sa...@lists.samba.org
>I know one issue I ran into when I recently upgraded Samba on the AIX box was that the WINBIND file in /usr/lib/security was a symbolic link that was not linked to the correct version of Samba. Have you looked at this file and verified that it is correct?
>
John,
Can you provide a little more on the problem you had? I'm not able to find the broken link in my development servers (32 or 64 bit), and I *really* want to improve our quality control.
Glad to hear the project is working out for you otherwise. :-)
Cheers,
Bill
John Welch
----- "William Jojo" <w.j...@hvcc.edu> wrote:
> ---- Original message ----
> >Date: Fri, 2 Apr 2010 08:15:38 -0400 (EDT)
> >From: John Welch <jwe...@brosco.com>
> >Subject: Re: [Samba] AIX 5.3 Active Directory Synchronisation using
> Winbind
> >To: cgr...@ultradata.com.au
> >Cc: sa...@lists.samba.org
>
> >I know one issue I ran into when I recently upgraded Samba on the AIX
> box was that the WINBIND file in /usr/lib/security was a symbolic link
> that was not linked to the correct version of Samba. Have you looked
> at this file and verified that it is correct?
> >
>
> John,
>
> Can you provide a little more on the problem you had? I'm not able to
> find the broken link in my development servers (32 or 64 bit), and I
> *really* want to improve our quality control.
>
> Glad to hear the project is working out for you otherwise. :-)
>
>
> Cheers,
> Bill
Hi Bill,
Prior to the recent upgrade to 3.4.5 we had been using an "old" 3.0 version (3.0.28) from your pware project. At that level of Samba at least the directory structure was "/opt/pware/samba/<version>". I did the upgrade a few months ago, so I'm trying to recall from memory the exact issue, but I believe after upgrading the WINBIND symbolic link was still pointing to the 3.0.28 binary. Not sure if the upgrade should have fixed this automatically or not. Really a minor thing, but something I overlooked initially.
Your project is awesome... Keep up the good work!
Thanks,
John