[Samba] netlogon sometimes works (corrected with smb.conf
attached)
jason.walton at nomadsoft.com
jason.walton at nomadsoft.com
Thu Jan 30 12:09:09 GMT 2003
John,
I have no success with packet sniffing, the netlogon share either works or
it doesn't.
Our boxes are not overly loaded, but I took your advice and tinkered with
the loading.
Over the passed week, it gets the netlogon share executed more times than
not (at the moment) but it still isn't perfect (100% record is what I'd
expect from a PDC).
I suspect it is a problem within samba in terms of how fast it looks at
certainincoming network packets, as the password logon works fine every
single time, but connecting to the PDC and executing the NETLOGON share
are problematic..
Anyway, thanks for your help. Hopefully, a bit more load balancing will
get it working 100% of the time.
Jason Walton
Nomad Software Ltd
186 Regent Street
London W1B 5TN
Tel. +44 (20) 7292 2459
Fax. +44 (20) 7292 2401
www.nomadsoft.com
John H Terpstra <jht at samba.org>
25/01/2003 05:05
To: jason.walton at nomadsoft.com
cc: samba at lists.samba.org
Subject: Re: [Samba] netlogon sometimes works (corrected with smb.conf attached)
Jason,
Apologies for the dealy, I was at LinuxWorld Expo New York all week and
just got home.
You should use a network sniffer (like Ethereal) to capture a trace of a
logon that works correctly and one that does not. Then examine the
differences to find what went wrong. It should tell you where things broke
down. If timing is the issue t hen your authentication server may be
problematic. In this case you would need to either isolate the problem, or
move the authentication (netlogon) service to another machine that is more
responsive.
- John T.
On Wed, 22 Jan 2003 jason.walton at nomadsoft.com wrote:
> John,
> thanks for your help thus far.
> I switched switches that the PDC is plugged into and it almost had me
> believing that it worked, I managed to log in three times in quick
> succession and each time it executed the netlogon script.
> Alas, inconsistency reared its ugly head once more and now I either get
a
> successful logon (netlogon script runs) or a plain logon (validates my
> password, creates my profile share (z drive), but fails to run the
> netlogon share).
> Which brings me to ask the question, is the netlogon share affected by
> network acvtivity? The PDC server is running fileservices, domino, and
> other items. Password validation isn't a problem, but getting samba to
> process the netlogon, is a pain.
> Everything that did run on the NT server has been migrated to the
solaris
> machine and works better and faster than before. The PDC is the last
item
> left, I'm wondering if Samba needs a more dedicated host to invoke
> netlogon? Domino can be quite intensive on network activity when
> replicating between sites, so would this network deluge put samba off
from
> the 'less critical' execution of the netlogon share?
>
> FYI our NT server is an old Pentium, 64Mb RAM, 10M network card.
> our solaris PDC server is a dual PIII, 1Gb RAM, 100M network card.
>
>
> Jason Walton
> Nomad Software Ltd
> 186 Regent Street
> London W1B 5TN
> Tel. +44 (20) 7292 2459
> Fax. +44 (20) 7292 2401
> www.nomadsoft.com
>
>
>
>
> John H Terpstra <jht at samba.org>
> 21/01/2003 03:46
>
>
> To: jason.walton at nomadsoft.com
> cc: samba at lists.samba.org
> Subject: Re: [Samba] netlogon sometimes works (corrected
with smb.conf attached)
>
>
> Jason,
>
> We have gone over a few things already. You are using WINS, that means
> your MS Windows clients should not have any trouble finding your samba
> server and the services that run on it.
>
> The only time I have seen similar behaviour, given that everything is
> correctly configured from a Samba and MS Windows networking perspective,
> has been where there has been a jabbering network card or a defective
HUB.
>
> Have you tried replacing the NICs in a client and the server? Have you
> tried a cross-over cable between the two to validate that you the
network
> login process correctly completes EVERY time. If with known working NICs
> and a cross-over cable you can reproduce the failure to execute the
> network logon process correctly, then it might be time to turn back to
> blaming the Samba or MS Windows configuration.
>
> - John T.
>
> On Mon, 20 Jan 2003 jason.walton at nomadsoft.com wrote:
>
> > Could anybody please help? I have tried all sorts and nothing will fix
> the
> > problem permamently.
> > I have a samba PDC which on occasion happily logs a user on and
> processes
> > the NETLOGON share. However, it doesn't always run this service.
> > I have placed preexec commands in both the profiles and netlogon
shares,
> > only the profiles preexec is executed.
> > Reboots don't make any difference, only determed logout / logins will
> > eventually get the netlogon share executed.
> > I have included the full smb.conf file, samba is now running 2.2.7a,
> each
> > upgrade results in the same problem.
> >
> > We have two domains, one controlled by an old NT PDC (this is to be
> > retired) and one by a new samba PDC (to be the main PDC for all
> machines,
> > once they are migrated). I have noticed that trying to join the samba
> > domain over a VPN is impossible, whereas joining the NT domain, works
> > first time. I don't know if this last bit is relevant to the problem
or
> > not.
> >
> >
> > # This is the main Samba configuration file. You should read the
> > # smb.conf(5) manual page in order to understand the options listed
> > # here. Samba has a huge number of configurable options (perhaps too
> > # many!) most of which are not shown in this example
> > #
> > # Any line which starts with a ; (semi-colon) or a # (hash)
> > # is a comment and is ignored. In this example we will use a #
> > # for commentry and a ; for parts of the config file that you
> > # may wish to enable
> > #
> > # NOTE: Whenever you modify this file you should run the command
> > "testparm"
> > # to check that you have not many any basic syntactic errors.
> > #
> > #======================= Global Settings
> > =====================================
> > [global]
> >
> > ##
> > ## Basic Server Settings
> > ##
> > netbios name = PDC
> > netbios aliases = FILESERVER
> > # netbios name = PDCM
> >
> > # workgroup = NT-Domain-Name or Workgroup-Name, eg: REDHAT4
> > workgroup = NOMAD
> > # workgroup = PDC1
> >
> > # server string is the equivalent of the NT Description field
> > server string = Nomad PDC (Samba %v)
> > #JOW server string = Samba Server 2.2.6
> >
> > # This option is important for security. It allows you to
> restrict
> > # connections to machines which are on your local network. The
> > # following example restricts access to two C class networks
and
> > # the "loopback" interface. For more examples of the syntax
see
> > # the smb.conf man page
> > hosts allow = 192.168.2. 192.168.1. 127.0.0.1
> >
> > # Uncomment this if you want a guest account, you must add
this
> to
> > /etc/passwd
> > # otherwise the user "nobody" is used
> > ; guest account = pcguest
> >
> > # this tells Samba to use a separate log file for each machine
> > # that connects
> > log file = /var/log/samba/log.%m
> >
> > # How much information do you want to see in the logs?
> > # default is only to log critical messages
> > log level = 1
> >
> > # Put a capping on the size of the log files (in Kb).
> > max log size = 10250
> >
> > # Security mode. Most people will want user level security.
See
> > # security_level.txt for details.
> > security = user
> > # JOW domain admin group = root @wheel
> > domain admin group = root administrator @sysadm
> >
> > # Using the following line enables you to customise your
> > configuration
> > # on a per machine basis. The %m gets replaced with the
netbios
> > name
> > # of the machine that is connecting.
> > # Note: Consider carefully the location in the configuration
> file
> > of
> > # this line. The included file is read at that point.
> > ; include = /usr/local/samba/lib/smb.conf.%m
> >
> > # Most people will find that this option gives better
> performance.
> > # See speed.txt and the manual pages for details
> > # You may want to add the following on a Linux system:
> > # SO_RCVBUF=8192 SO_SNDBUF=8192
> > ; socket options = TCP_NODELAY
> >
> > # Configure Samba to use multiple interfaces
> > # If you have multiple network interfaces and want to limit
smbd
> > will
> > # use, list the ones desired here. Otherwise smbd & nmbd will
> > bind to all
> > # active interfaces on the system. See the man page for
> details.
> > ; interfaces = 192.168.12.2/24 192.168.13.2/24
> >
> > # Should smbd report that it has MS-DFS Capabilities? Only
> > available
> > # if --with-msdfs was passed to ./configure
> > ; host msdfs = yes
> >
> > ##
> > ## Network Browsing
> > ##
> > # set local master to no if you don't want Samba to become a
> > master
> > # browser on your network. Otherwise the normal election rules
> > apply
> > local master = yes
> >
> > # OS Level determines the precedence of this server in master
> > browser
> > # elections. The default value (20) should be reasonable
> > os level = 99
> >
> > # Domain Master specifies Samba to be the Domain Master
Browser.
> > This
> > # allows Samba to collate browse lists between subnets. Don't
> use
> > this
> > # if you already have a Windows NT domain controller doing
this
> > job
> > domain master = yes
> >
> > # Preferred Master causes Samba to force a local browser
> election
> > on startup
> > # and gives it a slightly higher chance of winning the
election
> > preferred master = yes
> >
> > # added by JOW 2002/11/19 to enable us to see riga network
> > remote browse sync = 192.168.1.3
> > #JOW remote browse sync = 192.168.2.255 192.168.1.3
> >
> > ##
> > ## WINS & Name Resolution
> > ##
> > # Windows Internet Name Serving Support Section:
> > # WINS Support - Tells the NMBD component of Samba to enable
> it's
> > WINS Server
> > wins support = yes
> >
> > # WINS Server - Tells the NMBD components of Samba to be a
WINS
> > Client
> > # Note: Samba can be either a WINS Server, or a WINS
> Client,
> > but NOT both
> > ; wins server = w.x.y.z
> >
> > # WINS Proxy - Tells Samba to answer name resolution queries
on
> > # behalf of a non WINS capable client, for this to work there
> must
> > be
> > # at least one WINS Server on the network. The default is NO.
> > ; wins proxy = yes
> >
> > # DNS Proxy - tells Samba whether or not to try to resolve
> NetBIOS
> > names
> > # via DNS nslookups.
> > dns proxy = no
> >
> >
> > ##
> > ## Passwords & Authentication
> > ##
> > add user script = /usr/sbin/useradd -d /dev/null -g 400 -s
> > /bin/false %u
> > # Use password server option only with security = server
> > # The argument list may include:
> > # password server = My_PDC_Name [My_BDC_Name]
> [My_Next_BDC_Name]
> > # or to auto-locate the domain controller/s
> > ; password server = *
> > ; password server = <NT-Server-Name>
> >
> > # You may wish to use password encryption. Please read
> > # ENCRYPTION.txt, Win95.txt and WinNT.txt in the Samba
> > documentation.
> > # Do not enable this option unless you have read those
documents
> > encrypt passwords = yes
> >
> > # Should smbd obey the session and account lines in
> > /etc/pam.d/samba ?
> > # only available if --with-pam was used at compile time
> > ; obey pam restrictions = yes
> >
> > # When using encrypted passwords, Samba can synchronize the
> local
> > # UNIX password as well. You will also need the "passwd chat"
> > parameters
> > unix password sync = yes
> >
> > # how should smbd talk to the local system when changing a
UNIX
> > # password? See smb.conf(5) for details
> > passwd program = /usr/bin/passwd -r nis %u
> > #JOW passwd program = /usr/bin/passwd %u
> >
> > # define this as a standard, as it bloody moves around!
> > smb passwd file = /opt/private/smbpasswd
> > # define how the password is mapped via NIS
> > # JOW NIS stuff, but doesn't work according to samba bods passwd
> > chat = Enter*login(NIS)*password:* %n\n \nNew*password:* %n\n
> > \n*Re-enter*new*password:* %n\n \n*NIS*passwd/attributes*changed*on**
> > # now define the NIS MASTER method
> > passwd chat = New*password:* %n\n \n*Re-enter*new*password:*
> %n\n
> > \n*NIS*passwd/attributes*changed*on**
> >
> > # passwd chat = New*password:* %n\n \n*Re-enter*new*password:*
> %n\n
> > \n*passwd*(SYSTEM):*passwd*successfully*changed*for*%u*
> > # end of define the NIS MASTER method
> > passwd chat debug = no
> >
> > # This is only available if you compiled Samba to include
> > --with-pam
> > # Use PAM for changing the password
> > ; pam password change = yes
> >
> > ##
> > ## Domain Control
> > ##
> > # JOW added for PDC
> > admin users = root
> >
> > # Enable this if you want Samba act as a domain controller.
> > # make sure you have read the Samba-PDC-HOWTO included in the
> > documentation
> > # before enabling this parameter
> > domain logons = yes
> >
> > # if you enable domain logons then you may want a per-machine
or
> > # per user logon script
> > # run a specific logon batch file per workstation (machine)
> > ; logon script = client.bat
> > #JOW make this based on the group the person is in, most are
in
> > staff or cortex
> > logon script = %G.bat
> > # run a specific logon batch file per username
> > ; logon script = %U.bat
> >
> > # Where to store roving profiles (only for Win95 and WinNT)
> > # %L substitutes for this servers netbios name, %U is
> > username
> > # You must uncomment the [Profiles] share below
> > logon path = \\%L\Profiles\%U
> >
> > # UNC path specifying the network location of the user's home
> > directory
> > # only used when acting as a DC for WinNT/2k/XP. Ignored by
> Win9x
> > clients
> > #JOW put back in when staff.bat is global logon home =
> > \\%L\%U\windows
> >
> > # What drive should the "logon home" be mounted at upon login
?
> > # only used when acting as a DC for WinNT/2k/XP. Ignored by
> Win9x
> > clients
> > #JOW comment out till every one in staff logon drive = U:
> >
> > ##
> > ## Printing
> > ##
> >
> > # If you want to automatically load your printer list rather
> > # than setting them up individually then you'll need this
> > load printers = yes
> >
> > # you may wish to override the location of the printcap file
> > ; printcap name = /etc/printcap
> >
> > # on SystemV system setting printcap name to lpstat should
allow
> > # you to automatically obtain a printer list from the SystemV
> > spool
> > # system
> > ; printcap name = lpstat
> >
> > # It should not be necessary to specify the print system type
> > unless
> > # it is non-standard. Currently supported print systems
include:
> > # bsd, sysv, plp, lprng, aix, hpux, qnx
> > ; printing = bsd
> >
> > # Enable this to make Samba 2.2 behavior just like Samba 2.0
> > # not recommended nuless you are sure of what you are doing
> > ; disable spoolss = yes
> >
> > # list of users and groups which should be able to remotely
> manage
> > # printer drivers installed on the server
> > ; printer admin = root, +ntadmin
> >
> >
> > ##
> > ## Winbind
> > ##
> >
> > # specify the uid range which can be used by winbindd
> > # to allocate uids for Windows users as necessary
> > ; winbind uid = 10000-65000
> >
> > # specify the uid range which can be used by winbindd
> > # to allocate uids for Windows users as necessary
> > ; winbind gid = 10000-65000
> >
> > # Define a home directory to be given to passwd(5) style
entries
> > # generated by libnss_winbind.so. You can use variables here
> > ; winbind template homedir = /home/%D/%U
> >
> > # Specify a shell for all winbind user entries return by the
> > # libnss_winbind.so library.
> > ; winbind template shell = /bin/sh
> >
> > # What character should be used to separate the DOMAIN and
> > Username
> > # for a Windows user. The default is DOMAIN\user, but many
> people
> > # prefer DOMAIN+user
> > ; winbind separator = +
> >
> > # preload = NETLOGON
> >
> > #============================ Share Definitions
> > ==============================
> > [peter]
> > browseable = no
> > valid users = peter, lhmphrey
> > path = /share/homes/peter
> >
> > [homes]
> > create mode = 0600
> > directory mode = 0700
> > comment = Home Directories
> > browseable = no
> > writable = yes
> > ;JOW20021113 valid users = %S
> > path = /share/homes/%U
> > ; path = %H
> >
> > # Un-comment the following and create the netlogon directory for
Domain
> > Logons
> > #[netlogon]
> > [NETLOGON]
> > path = /profiles/netlogon
> > comment = Network Logon Service
> > guest ok = yes
> > writeable = yes
> > #JOW2003/01/15 writable = no
> > share modes = yes
> > # share modes = no
> > write list = administrator, @sysadm
> > preexec = echo %u %H %U %G >> /tmp/logon.netlogon
> >
> >
> > # Un-comment the following to provide a specific roving profile share
> > # the default is to use the user's home directory
> > #[profiles]
> > [Profiles]
> > path = /profiles
> > writeable = yes
> > read only = No
> > browseable = yes
> > guest ok = yes
> > profile acls = yes
> > preexec = echo %u %H %U %G >> /tmp/logon.profiles
> >
> > [images]
> > comment = system images that are not to be made visible
> > path = /share/images
> > valid users = sahmed, jwalton, root, administrator
> > read only = No
> >
> > [helpdesk]
> > comment = helpdesk - see Peter Brent
> > read only = No
> > path = /share/homes/preserve/helpdesk
> >
> > [NMR_DEBUG]
> > comment = NMR_DEBUG - see Peter Brent
> > read only = No
> > path = /share/homes/preserve/NMR_DEBUG
> >
> > [codereview]
> > comment = codereview - see dave bunbury
> > path = /share/homes/preserve/codereview
> > read only = No
> >
> > [publicimages]
> > comment = system images that are freely available
> > path = /share/images/public
> > read only = No
> >
> > [archived]
> > comment = user view of archived files that will be deleted
after
> > 30 days
> > path = /share/archived/share/homes/%U
> > read only = No
> > [archived_all]
> > comment = global view of archived files that will be deleted
> after
> > 30 days
> > path = /share/archived
> > read only = No
> >
> > # NOTE: If you have a BSD-style print system there is no need to
> > # specifically define each individual printer
> > [printers]
> > # Set public = yes to allow user 'guest account' to print
> > comment = printers in london
> > path = /var/spool/samba
> > guest ok = Yes
> > printable = Yes
> > browseable = No
> >
> > [5thfloortmp]
> > path = /var/spool/samba
> > read only = No
> > guest ok = Yes
> > printable = Yes
> > printing = nt
> > printer name = 5thfloor
> > use client driver = Yes
> > oplocks = No
> >
> > [2ndfloor]
> > path = /var/spool/samba
> > read only = No
> > guest ok = Yes
> > printable = Yes
> > printing = nt
> > printer name = 2ndfloor
> > use client driver = Yes
> > oplocks = No
> >
> > [print$]
> > path = /opt/samba/printers
> > write list = @administrator,root
> >
> >
>
>
--
John H Terpstra
Email: jht at samba.org
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