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[Samba] Problems with Winbind Idmap and Active Directory 2..

 
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Matthew Choppen
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Since: Mar 04, 2011
Posts: 1



PostPosted: Fri Mar 04, 2011 9:10 am    Post subject: [Samba] Problems with Winbind Idmap and Active Directory 2008 r2
Archived from groups: linux>samba (more info?)

For our Linux Machines (SLES 10) we are using kerberos and LDAP to
authenticate against Active Directory (works perfectly)

Please note that the same configuration works with Windows 2003 Server, the
problem is with with Windows 2008 Server

However we are experiencing problems with winbind for the file share, I see
in the "log.winbind-idmap" logfile the following errors

[2011/03/03 15:09:08.643286, 1]
winbindd/idmap_ad.c:143(ad_idmap_cached_connection_internal)
ad_idmap_init: failed to connect to AD
[2011/03/03 15:09:08.643323, 1]
winbindd/idmap_ad.c:326(idmap_ad_unixids_to_sids)
ADS uninitialized: No logon servers
The user from windows clients experiences extremely poor performance (I
guess timeouts from winbind, and I would also guess that winbind then
assigns some kind of default ID and not the real uid/gid from AD)

The Unix Services for windows is applied and the users have the correct UNIX
settings (else LDAP / kerberos auth would not work)

I have also tried backend = ldap:ldap://OurADServer which also does not
work!!!


Here is our current configuration:

samba3-3.5.2-43.suse101.x86_64.rpm
samba3-cifsmount-3.5.2-43.suse101.x86_64.rpm
samba3-client-3.5.2-43.suse101.x86_64.rpm
samba3-debuginfo-3.5.2-43.suse101.x86_64.rpm
samba3-doc-3.5.2-43.suse101.x86_64.rpm
samba3-utils-3.5.2-43.suse101.x86_64.rpm
samba3-winbind-32bit-3.5.2-43.suse101.i586.rpm
samba3-winbind-3.5.2-43.suse101.x86_64.rpm
Samba Config

[global]
workgroup = MYDOMAIN
password server = OurADServer
domain master = no
realm = MYDOMAIN.COM
server string = ClearCase Server
netbios name = OURNAME
security = ADS
encrypt passwords = yes
winbind use default domain = Yes
winbind nested groups = Yes
client use spnego = Yes
winbind enum users = Yes
winbind enum groups = Yes
template shell = /bin/bash
template homedir = /home/%u
log level = 2
log file = /var/log/samba/%m
max log size = 50
winbind separator = +
#idmap uid = 40000-50000
#idmap gid = 40000-50000
winbind offline logon = true
winbind cache time = 5
winbind refresh tickets = true
map to guest = Bad User
username map = /etc/samba/users.map
max open files = 11000
add machine script = /usr/sbin/useradd -c Machine -d /var/lib/nobody -s
/bin/false %m$
ldap ssl = No
socket options = TCP_NODELAY SO_RCVBUF=16384 SO_SNDBUF=16384
idmap backend = ad
ldap idmap suffix = dc=mydomain,dc=com
ldap admin dn = CN=bindUserFromAD,OU=Siteroles,OU=HAM,DC=mydomain,dc=com
ldap suffix = dc=mydomain,dc=com
usershare allow guests = Yes
directory security mask = 0775
kernel oplocks = No
create mask = 0775
directory mask = 0775
map archive = No
oplocks = No
level2 oplocks = No
[vobs]
comment = Vob storage directory
path = /vobs
valid users = @"MYDOMAIN+ccusers"
writeable = Yes
create mask = 0775
force directory mode = 0775
[vobstore]
comment = Vob storage directory
path = /vobstore
valid users = @"MYDOMAIN+ccusers"
writeable = Yes
create mask = 0775
force directory mode = 0775
[ccviews]
comment = View storage directory
path = /ccviews
valid users = @"MYDOMAIN+ccusers"
writeable = Yes
create mask = 0775
force directory mode = 0775
Thanks for any assistance Smile

Matt
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