From f5b17b7519006bff137f09cb3e18aaae71031c6c Mon Sep 17 00:00:00 2001 From: Gerald Carter Date: Wed, 28 Feb 2001 14:44:31 +0000 Subject: some updates and reorganization (This used to be commit a6d65d79642d0e2dfc7137d62eb0578c1cec15fb) --- docs/docbook/faq/samba-pdc-faq.sgml | 962 ++++++++++++++++++++++++++++++++++++ 1 file changed, 962 insertions(+) create mode 100644 docs/docbook/faq/samba-pdc-faq.sgml (limited to 'docs/docbook/faq') diff --git a/docs/docbook/faq/samba-pdc-faq.sgml b/docs/docbook/faq/samba-pdc-faq.sgml new file mode 100644 index 0000000000..4034987480 --- /dev/null +++ b/docs/docbook/faq/samba-pdc-faq.sgml @@ -0,0 +1,962 @@ + + + +The Samba 2.2 PDC FAQ + + + + DavidBannon + La Trobe University + +
dbannon@samba.org
+ November 2000 + + + +</> + + <para>Comments, corrections and additions to <email>D.Bannon@latrobe.edu.au</email></para> + + <para>This is the FAQ for Samba 2.2 as an NTDomain controller. + This document is derived from the origional FAQ that was built and + maintained by Gerald Carter + from the early days of Samba NTDomain development up until recently. + It is now being updated as significent changes are made to 2.2.0.</para> + + <para>Please note it does not apply to Samba2.2alpha0, Samba2.2alpha1, Samba 2.0.7, TNG nor HEAD branch. + </para> + <para>I'll repeat, it does not apply to the current snapshot [ftp mirror]:/pub/samba/alpha/samba-2.2.0-alpha1.tar.gz, only to the to the current cvs.</para> + +<para> + Also available is a Samba 2.2 PDC <ulink url="samba-pdc-howto.html">HowTo</> that takes you, step + by step, over the process of setting up a very basic Samba 2.2 Primary Domain Controller + </para> + + <note><para>Please read the Introduction for the current <link linkend=stateofplay> state of play</>.</para></> +</dedication> + +<toc></toc> + +<!-- ================ I N T R O D U C T I O N ==================== --> + + +<chapter><title>Introduction</> + +<sect1><title id=stateofplay>State of Play + It should be noted that 2.2.0 in its pre-release form still has a few problems, + I'll try and keep this section current while things are still dynamic. + At the time of this update (December 15, 2000) the current state of play is : + + Comments here about W2K joining the domain apply only to Samba 2.2 from the CVS after November 27th. The + 'snapshot' release Samba2.2alpha1 does not work !!! See below on how to get a CVS tree. + + Known Bug !W2K machines will not successfully join a domain with a name that + is made up from an even number of characters. Yep, thats right ! BIOTEST is OK as is MYDOMAI + but MYDOMAIN will not work until this bug is fixed. Hmm.., we believe + that this bug is fixed, but see below. + + Known Bug !After some bugs were fixed just before + Christmas, W2K SP1 machines cannot join the domain. Expected to be + fixed early in the new year. Whats that ? yeah, samba developers + have a Christmas break too ! + + + Know Bug !NTs (and possibly W2K ?) are not told the logged on user is a domain + admin if the parameter "domain admin users = user" is used. The alternative, "domain admin group" + does work. See the HowTo. + + Client Side creation of Machine accounts does work but is not complete. + Firstly, the add user script runs as the user who's + name was entered, not as root. Secondly, the machine name passed to the script (%U) + has an underscore at the end, not a '$'. One alternative is to use %m and add the $. + This method is documented in the HowTo. + And thirdly, it does not work with NT4ws. + + + A W2K machine can join the domain. See the HowTo + which explains the process. The methods + described are 'work arounds' and should be regarded as temporary. Although I (drb) + have tested these procedures a number of people have had difficulty so there + may be other issues at work. JFM is aware of these + problems and will attend to them when he can. + + A Domain Admin account is required and at present it appears that only root + is a suitable candidate. + + Much of the related code does work. For example, if an NT is removed from the + domain and then rejoins, the Create a Computer Account in the Domain dialog + will let you reset the smbpasswd. That is you don't need to do it from + the unix box. However, at the present, you do need to have root as an + administrator and use the root user name and password. + + Actually I'm + not sure that last paragraph is correct .... + + Policies do work on a W2K machine. MS says that recent builds of + W2K dont observe an NT policy but it appears it does in 'legacy' mode. + + +Introduction</> + <para>This FAQ was origionally compiled by Jerry Carter (gc) chiefly dealing with the 'old head' + version of Samba and its NTDomain facilities. It is being rewritten by David Bannon (drb) + so that it addresses more accurately the Samba 2.2 planned for release late 2000. </para> + + <para>This document probably still contains some material that does not apply to + Samba 2.2 but most (all?) of the really misleading stuff has been removed. Some + issues are not dealt with or are dealt with badly. Please send corrections and additions to + David Bannon at D.Bannon@latrobe.edu.au</para> + + <para>Hopefully, as we all become familiar with the Samba 2.2 as a PDC this document will + become much more usefull.</para> + + +</sect1> +</chapter> + +<!-- ============== G E N E R A L I N F O R M A T I O N ============== --> + +<chapter><title>General Information</> + + +<sect1><title>What can we do ? + +What can Samba Primary Domain Controller (PDC) do ?</> + + <para>If you wish to have Samba act as a PDC for Windows NT 3.51.and 4.0 or W2000 client, then you + will need to obtain the 2.2.0 version, currently in pre-release. Release of a stable, + full featured Samba PDC is currently slated for version 3.0. </para> + + <para>The following is a list of included features currently in Samba 2.2:</para> +<itemizedlist> + <listitem><para>The ability to act as a limited PDC for Windows NT and W2000 clients. + This includes adding NT and W2K machines to the domain and authenticating users logging + into the domain.</para></listitem> + <listitem><para>Domain account can be viewed using the User Manager for + Domains ????</para></listitem> + <listitem><para>Viewing resources on the Samba PDC via the Server Manager for Domains + from the NT client. ??</para></listitem> + <listitem><para>Windows 95 clients will allow user level security to be set + but will not currently allow browsing of accounts.</para></listitem> + <listitem><para>Machine account password updates.</para></listitem> + <listitem><para>Changing of user passwords from an NT client.</para></listitem> + <listitem><para>Partial support for Windows NT group and username mapping.</para></listitem> + <listitem><para>Support for a LDAP password database backend.</para></listitem> + <listitem><para>Printing.</para></listitem> +</itemizedlist> + + +<itemizedlist><title>These things are note expected to work in the forseeable future + Trust relationships + PDC and BDC integration + Windows NT ACLs (on the Samba shares) + Offer a list of domain users to User Manager for Domains + (or the Security Tab etc). + + + +Can I have a Windows 2000 client logon to a Samba controlled domain?</> + + <para>The 2.2 release branch of Samba supports Windows 2000 domain + clients in legacy mode, ie as if the PDC is a NTServer, not a + W2K server.</para> +</sect2> + +<sect2><title>What's the status of print spool (spoolss) support in the NTDOM code? </> + + <para>The implementation of support for SPOOLSS pipe is complete and it will be available + in the 2.2.0 release. This means that Samba will support the automatic downloading of printer + drivers for Windows NT clients just as it currently does for Windows 9x clients.</para> +</sect2> +</sect1> + +<sect1><title>CVS + CVS is a programme (publically available) that the Samba developers use to + maintain the central source code. Non developers can get access to the source in + a read only capacity. Many flavours of unix now arrive with cvs installed. + +What are the different Samba branches available in CVS ?</> + + <para>You can find out more about obtaining Samba's via + anonymous CVS from + <ulink url="http://pserver.samba.org/samba/cvs.html"> + http://pserver.samba.org/samba/cvs.html"</>. </para> + +<variablelist><title>There are basically four branches to watch at the moment :</> + <varlistentry> + <term>HEAD</> + <listitem><para>Samba 3.0 ? This code boasts all the main development + work in Samba. Two things that most people are not aware of + which live in the HEAD branch code are winbind NSS module and + Tim Potter's VFS implementation. Due to its developmental + nature, its not really suitable for production work. + </para></listitem></varlistentry> + <varlistentry> + <term>SAMBA_2_0</term> + <listitem><para>This branch contains the current stable release release. + At the moment it contains 2.0.7, a version that will do some + limited PDC stuff. If you are really going to do PDC things then + I (drb) suggest that you consider 2.2 instead. + </para></listitem></varlistentry> + <varlistentry> + <term>SAMBA_2_2</> + <listitem><para>The next stable release, currently in a 'alpha' form. + It provides the Samba developers, testers and interested + people with an approximation of what is to come. This document + addresses only SAMBA_2_2. + </para></listitem></varlistentry> + <varlistentry> + <term>SAMBA_TNG</> + <listitem><para>This branch is no longer maintained from the Samba sites. + Please see <ulink url="http://www.samba-tng.org/"> + http://www.samba-tng.org/</ulink>. It has been requested + that questions about TNG are not posted to the regular Samba mailing + lists including samba-ntdom and samba-technical. + </para></listitem></varlistentry> +</variablelist> +</sect2> + +<sect2><title>What are the CVS commands ?</> + + <para>See <ulink url="http://pserver.samba.org/samba/cvs.html"> + http://pserver.samba.org/samba/cvs.html</></para> + + + <itemizedlist><title>To get the Samba 2.2 version, tag SAMBA_2_2 you would do :</> + <listitem><para> For example : <command>cd /usr/local/src/</></></> + <listitem><para> <command>cvs -d :pserver:cvs@pserver.samba.org:/cvsroot + login</></></> + <listitem><para> When prompted enter a password of <command>cvs</></></> + <listitem><para> <command>cvs -d :pserver:cvs@pserver.samba.org:/cvsroot + co -r SAMBA_2_2 samba</></></> + </itemizedlist> + + <itemizedlist><title>Then to update that directory at some later time,</> + <listitem><para> <command>cd /usr/local/src/samba</></></> + <listitem><para> <command>cvs -d :pserver:cvs@pserver.samba.org:/cvsroot login</></></> + <listitem><para> When prompted enter a password of 'cvs'.</></> + <listitem><para> <command>cvs update -d -P</></></> + </itemizedlist> +</sect2> +</sect1> +</chapter> + +<chapter><title>Establishing Connections</> +<sect1><title> + +How do I get my NT4 or W2000 Workstation to login to the Samba controlled Domain?</> + + <para>There is a comprehensive Samba PDC <ulink url="samba-pdc-howto.html">HowTo</> + accessable from the samba web site + under 'Documentation'. Its currently located at <ulink url="http://bioserve.latrobe.edu.au/samba"> + http://bioserve.latrobe.edu.au/samba</>. Read it.</para> +</sect2> + +<sect2><title>What is a 'machine account' ? + Every NT, W2K or Samba machine that joins a Samba controlled domain must be known to + the Samba PDC. There are two entries required, one in (typically) /etc/passwd + and the other in (typically) /usr/local/samba/private/smbpasswd. Under + some circumstances these entries are made manually, the + HowTo discusses ways of creating them automatically. + + + +"The machine account for this computer either does not exist or is not accessable."</> + + <para>When I try to join the domain I get the message "The machine account for this computer + either does not exist or is not accessable". Whats wrong ?</para> + + <para>This problem is caused by the PDC not having a suitable machine account. + If you are using the <command>add user script =</> method to create accounts + then this would indicate that it has not worked. Ensure the domain admin user + system is working.</para> + + <para>Alternatively if you are creating account entries manually then they have not been created + correctly. Make sure that you have the entry correct for the machine account in smbpasswd + file on the Samba PDC. If you added the account using an editor rather than using the smbpasswd utility, + make sure that the account name is the machine netbios name with a '$' appended to it + ( ie. computer_name$ ). There must be an entry in both /etc/passwd and + the smbpasswd file. Some people have reported that + inconsistent subnet masks between the Samba server and the NT client have caused this problem. + Make sure that these are consistent for both client and server.</para> +</sect2> + +<sect2><title id=machineaccounts>How do I create machine accounts manually ? + + This was the only option until recently, now in version 2.2 better means are available. + You might still need to do it manually for a couple of reasons. A machine account + consists of two entries (assuming a standard install and /etc/passwd use), + one in /etc/passwd and the other in /usr/local/samba/private/smbpasswd. The /etc/passwd + entry will list the machine name with a $ appended, won't have a passwd, will have a null + shell and no home directory. For example a machine called 'doppy' would have an /etc/passwd + entry like this : + + doppy$:x:505:501:NTMachine:/dev/null:/bin/false + + On a linux system for example, you would typically add it like this : + + adduser -g machines -c NTMachine -d /dev/null -s /bin/false -n + doppy$ + + Then you need to add that entry to smbpasswd, assuming you have a suitable + path to the smbpasswd programme, do this : + + smbpasswd -a -m doppy$ + + The entry will be created with a well known password, so any machine that + says its doppy could join the domain as long as it gets in first. So don't create + the accounts any earlier than you need them. + + +I cannot include a '$' in a machine name. + + A 'machine name' in (typically) /etc/passwd consists + of the machine name with a '$' appended. FreeBSD (and other BSD systems ?) + won't create a user with a '$' in their name. + + The problem is only in the program used to make the entry, once made, it works + perfectly. So create a user without the '$' and use vipw to edit + the entry, adding the '$'. Or create the whole entry with vipw if you like, + make sure you use a unique uid ! + + +I get told "You already have a connection to the Domain...." when creating a + machine account.</> + + <para>This happens if you try to create a machine account from the machine itself + and use a user name that does not work (for whatever reason) and then try + another (possibly valid) user name. + Exit out of the network applet to close the initial connection and try again.</para> + + <para>Further, if the machine is a already a 'member of a workgroup' that is the + same name as the domain you are joining (bad idea) you will get this message. + Change the workgroup name to something else, it does not matter what, reboot, + and try again.</para> +</sect2> + +<sect2><title>I get told "Cannot join domain, the credentials supplied conflict + with an existing set.."</> + <para>This is the same basic problem as mentioned above, <link linkend=alreadyhaveconnection> + "You already have a connection..."</link></para> +</sect2> + +<sect2><title>"The system can not log you on (C000019B)...."</> + <para>I joined the domain successfully but after upgrading to a newer version of the + Samba code I get the message, "The system can not log you on (C000019B), Please try a + gain or consult your system administrator" when attempting to logon.</para> + + <para>This occurs when the domain SID stored in private/WORKGROUP.SID is changed. + For example, you remove the file and smbd automatically creates a new one. + Or you are swapping back and forth between versions 2.0.7, TNG and the HEAD branch + code (not recommended). The only way to correct the problem is to restore the + original domain SID or remove the domain client from the domain and rejoin.</para> +</sect2> +</sect1> + +</chapter> + + +<!-- ============ U S E R A C C O U N T M A N A G M E N T ============= --> + +<chapter><title>User Account Management +Domain Admins +How do I configure an account as a domain administrator? + + See the NTDom HowTo. + + + +Profiles +Why is it bad to set "logon path = \\%N\%U\profile" in smb.conf? ?</> + + <para>Sometimes Windows clients will maintain a connection to the \\homes\ ( or [%U] ) share + even after the user has logged out. Consider the following scenario.</para> +<itemizedlist> + <listitem><para> user1 logs into the Windows NT machine. Therefore the + [homes] share is set to \\server\user1.</para></listitem> + <listitem><para> user1 works for a while and then logs out. </para></listitem> + <listitem><para> user2 logs into the same Windows NT machine.</para></listitem> +</itemizedlist> + + <para>However, since the NT box has maintained a connection to [homes] which was + previously set to \\server\user1, when the operating system attempts to + get the profile and if it can read users1's profile, will get it otherwise it + will return an error. You get the picture.</para> + + <para>A better solution is to use a separate [profiles] share and set the + "logon path = \\%N\profiles\%U" </para> + + + <note><para>Is this still a problem ????</para></note> +</sect2> + + +<sect2><title>Why are all the users listed in the "domain admin users" using the same profile?</> + + <para>You are using a very very old development version of Samba. Upgrade.</para> +</sect2> + + + + + +<sect2><title>The roaming profiles do not seem to be updating on the server. + + There can be several reasons for this. + + Make sure that the time on the client and the PDC are synchronized. You can accomplish + this by executing a net time \\server /set /yes replacing server with the + name of your PDC (or another synchronized SMB server). See + about Setting Time + + Make sure that the + logon path is writeable by the user and make sure that the connection to the logon + path location is by the current user. Sometimes Windows client do not drop the + connection immediately upon logoff. + + Some people have reported that the logon path location should also be browseable. + I (GC) have yet to emperically verify this, but you can try. + + + +Policies + +What are 'Policies' ?. + When a user logs onto the domain via a client machine, the PDC sends + the client machine a list of things contained in the 'policy' (if it exists). + This list may do things like suppress a splach screen, format the dates the way you + like them or perhaps remove locally stored profiles. + + On a samba PDC this list is obtained from a file called ntconfig.pol + and located in the [netlogon]share. The file is created with a policy editor + and must be readable by anyone and writeable by only root. See + below for how to get a suitable editor. + + +I can't get system policies to work. + + There are two possible reasons for system policies not functioning correctly. + Make sure that you have the following parameters set in smb.conf + + + [netlogon] + .... + locking = no + public = no + browseable = yes + .... + + + A policy file must be in the [netlogon] share and must be + readable by everyone and writeable by only root. The file must be created + by an NTServer Policy Editor. + + Last time I (drb) looked in the source, it was + looking for ntconfig.pol first then several other combinations of upper + and lower case. People have reported success using NTconfig.pol, + NTconfig.POL and ntconfig.pol. These are the case + settings that I (GC) use with the + filename ntconfig.pol + + + case sensitive = no + case preserve = yes + default case = yes + + + + +What about Windows NT Policy Editor ? + + To create or edit ntconfig.pol you must use the NT Server + Policy Editor, poledit.exe which is included with NT Server + but not NT Workstation. There is a Policy Editor on a NTws + but it is not suitable for creating Domain Policies. + Further, although the Windows 95 + Policy Editor can be installed on an NT Workstation/Server, it will not + work with NT policies because the registry key that are set by the policy templates. + However, the files from the NT Server will run happily enough on an NTws. + You need poledit.exe, common.adm and winnt.adm. It is convenient + to put the two *.adm files in c:\winnt\inf which is where + the binary will look for them unless told otherwise. Note also that that + directory is 'hidden'. + + The Windows NT policy editor is also included with the + Service Pack 3 (and later) for Windows NT 4.0. Extract the files using + servicepackname /x, ie thats Nt4sp6ai.exe /x + for service pack 6a. + The policy editor, poledt.exe and the associated template files (*.adm) should + be extracted as well. It is also possible to downloaded the policy template + files for Office97 and get a copy of the policy editor. Another possible + location is with the Zero Administration Kit available for download from Microsoft. + + + + +Can Win95 do Policies ? + + Install the group policy handler for Win9x to pick up group policies. + Look on the Win98 CD in + \tools\reskit\netadmin\poledit. Install group policies on a Win9x client by double-clicking + grouppol.inf. Log off and on again a couple of times and see if + Win98 picks up group policies. + Unfortunately this needs to be done on every Win9x machine that uses group policies.... + + If group policies don't work one reports suggests getting the updated (read: working) + grouppol.dll for Windows 9x. The group list is grabbed from /etc/group. + + + + + +Passwords + +What is password sync and should I use it ? + + NTws users can change their domain password by pressing Ctrl-Alt-Del and + choosing 'Change Password'. By default however, this does not change the unix password + (typically in /etc/passwd or /etc/shadow). In lots of situations + thats OK, for example : + + The server is only accessible to the user via samba. + Pam_smb or similar is installed so other applications + still refer to the samba password. + + But sometimes you really do need to maintain two seperate password databases and + there are good reasons to keep then in sync. Trying to explain to users + that they need to change their passwords in two seperate places or use + two seperate passwords is not fun. + + However do understand that setting up password sync is not without problems either. + The chief difficulty is the interface between Samba and the passwd command, + it can be a fiddle to set up and if the password the user has entered fails, + the resulting errors are ambiguously reported + and the user is confused. Further, you need to take steps to ensure that users + only ever change their passwords via samba (or use smbpasswd), + otherwise they will only be changing the unix password. + + + + +How do I get remote password (unix and SMB) changing working ?</> + + <para>Have a practice changing a user's password (as root) to see what + discussion takes place and change the text in the 'passwd chat' line below as necessary. The + line as shown works for recent RH Linux but most other systems seem to like to do something + different. The '*' is a wild card and will match anything (or nothing). + </para> + + <para>Add these lines to smb.conf under [Global]</para> + + <programlisting> + + unix password sync = true + passwd program = /usr/bin/passwd %u + passwd chat = *password* %n\n *password* %n\n *successful* + </programlisting> + + <para>As mentioned above, the change to the unix password + happens as root, not as the user, as is indicated in ~/smbd/chgpasswd.c If + you are using NIS, the Samba server must be running on the NIS master machine.</para> +</sect2> + +</sect1> + +</chapter> + +<!-- =================== M I S C E L L A N E O U S ================= --> + +<chapter><title>Miscellaneous + +What editor can I use in DOS/Windows that won't mess with my unix EOF + There are a number of Windows or DOS based editors that will understand, and + leave intact, the unix eof (as opposed to a DOS CL/LF). List members suggested : + + + UltraEdit at www.ultraedit.com + VI for windows at + home.snafu.de/ramo/WinViEn.htm + The author prefers PFE at + www.lancs.ac.uk/people/cpaap/pfe/ but its no longer being developed... + + + + + + +How do I get 'User Manager' and 'Server Manager' + + Since I don't need to buy an NT Server CD now, how do I get the 'User Manager for + Domains', the 'Server Manager' ? + +Microsoft distributes a version of these tools called nexus + for installation on Windows 95 systems. The tools set includes + Server Manager + User Manager for Domains + Event Viewer + + + Click here to download the archived file + + ftp://ftp.microsoft.com/Softlib/MSLFILES/NEXUS.EXE + + The Windows NT 4.0 version of the 'User Manager for Domains' + and 'Server Manager' are available from Microsoft via ftp from + + ftp://ftp.microsoft.com/Softlib/MSLFILES/SRVTOOLS.EXE + + + +The time setting from a Samba server does not work. + If it works OK when you log on as Domain Admin then the problem is that ordinary users + don't have permission to change the time. (The system is running with their permission + at logon time.) This is not a Samba problem, you will have the same problem where ever + you connect. You can give 'everyone' permission to change the time from the User Manager. + + + Anyone know what the registry settings are so this could be done with a Policy ? + + +"trust account xxx should be in DOMAIN_GROUP_RID_USERS"</> + <para>I keep getting the message "trust account xxx should be in DOMAIN_GROUP_RID_USERS." + in the logs. What do I need to do?</para> + + <para>You are using one of the old development versions. Upgrade. + (The message is unimportant, was a reminder to a developer)</para> + +</sect2> + +<sect2><title>How do I get my samba server to become a member ( not PDC ) of an NT domain? + + + In a domain that has a number of servers you only need one password database. + The machines that don't have their own ask the PDC to check for them. + This will work fine for a domain controlled by either a Samba or NT machine. + The following lines in smb.conf are typical, 'password server' points to the + samba machine (or an NT) that has the password list : + + + + [global] + ... + security = domain + workgroup = { Put your domain name here } + password server = { Put the ip of the PDC here } + encrypt passwords = yes + ... + + + The samba server in question will have to 'join the domain', that requires + the domain controller to have a machine account for it. This is no different + to the machine account requirements to allow a NTws to join the domain. For + example, if we want a unix box called sleepy to ask the PDC called grumpy + to do its authentication then grumpy will need an entry in its smbpasswd + (assuming it's also samba) that starts with sleepy$. It would have to be + created manually. + + If the domain is controlled by an NTServer then the "Server Manager for Domains" + tool must be used to add 'sleepy' to the domain list. + + In either case we then join the domain. If the domain is called forest + then on sleepy we would join the domain by typing : + + smbpasswd -j forest + + Note that the directory where the smbpasswd file would be + located should exist as this is where smbd will generate the MACHINE.SID file. This + might be /usr/local/samba/private/FOREST.SLEEPY.SID and + it contains the trust account password for the domain member. The permissions are + (and should remain) "rw------- + + + Note the Samba Servers without the password list will most likely still need an account + for each user, this means a line in its /etc/passwd. Because authentication + is being handled at the domain level the + /etc/passwd line does not need a password. + If the shares being offered are not user specific, ie a common (read only ?) + area or perhaps just printing then the user's + /etc/passwd does not need a home directory. A typical + line in /etc/passwd for a server that allows domain users to + connect to the samba shares but does not offer a home share ('cos that's on the PDC) + and does not allow logon to the unix prompt would be like this : + + jblow:x:542:100:Joe Blow:/dev/null:/bin/false + + Notes :</> + <itemizedlist> + <listitem><para>When removing those 'dummy' users, watch the 'remove user' scripts, + some OS think they should remove a users directory even when its not owned by the user ! + </para></listitem> + + <listitem><para>The <filename>username map = </> parameter might help you to avoid having + all those accounts created.</para></listitem> + + <listitem> + <para>You should investigate the smb.conf parameter + <filename>'add user script'</filename>, it will be used to create accounts on + secondary servers when that account already exists on the PDC. Very nice. + Something like :</para> + + <programlisting> + [Global] + .... + add user script = /usr/sbin/adduser -n -g users -c User -d /dev/null -s /bin/false %U + .... + </programlisting> + </listitem> + </itemizedlist> + </note> + +</sect2> +</sect1> +</chapter> + + +<!-- ======== T R O U B L E S H O O T I N G and B U G R E P O R T I N G ======== --> + + + +<chapter><title>Troubleshooting and Bug Reporting + +Diagnostic tools + +What are some diagnostics tools I can use to debug the domain logon process and where can I + find them? + + One of the best diagnostic tools for debugging problems is Samba itself. You can use the -d + option for both smbd and nmbd to specifiy what 'debug level' at which to run. See the man + pages on smbd, nmbd and smb.conf for more information on debugging options. The debug + level can range from 1 (the default) to around 100 but a debug level of about 20 will + normally help you find any errors that samba is encountering. Another helpful method + of debugging is to compile samba using the gcc -g flag. This will include debug + information in the binaries and allow you to attch gdb to the running smbd / nmbd + process. In order to attach gdb to an smbd process for an NT workstation, first + get the workstation to make the connection. Pressing ctrl-alt-delete and going down + to the domain box is sufficient (at least, on the first time you join the domain) to + generate a 'LsaEnumTrustedDomains'. Thereafter, the workstation maintains an open + connection, and therefore there will be an smbd process running (assuming that you + haven't set a really short smbd idle timeout) So, in between pressing ctrl alt + delete, and actually typing in your password, you can gdb attach and continue. + + Some usefull samba commands worth investigating:</> + <listitem><para>testparam | more</></> + <listitem><para>smbclient -L //{netbios name of server}</></> + </itemizedlist> + + <para>An SMB enabled version of tcpdump is available from + <ulink url="ftp://samba.org/pub/samba/tcpdump-smb/">ftp://samba.org/pub/samba/tcpdump-smb/ + </ulink></para> + + <para>Capconvert is a small C program for translating output from tcpdump-smb to CAP format + that can be read by netmon. You will need to use the raw output from tcp dump + ( ie. <command>tcpdump -w output.dump</> ). Good news! Now you can convert + Solaris' snoop output as well. The C source code for snoop2cap is available for download. + </para> + + <para>For tracing things on the Microsoft Windows NT, Network Monitor (aka. netmon) is available + on the Microsoft Developer Network CD's, the Windows NT Server install CD and the SMS CD's. + The version of netmon that ships with SMS allows for dumping packets between any two + computers (ie. placing the network interface in promiscuous mode). The version + on the NT Server install CD will only allow monitoring of network traffic directed to the + local NT box and broadcasts on the local subnet.</para> + +</sect2> + +<sect2><title>How do I install 'Network Monitor' on an NT Workstation or a Windows 9x box? + + Installing netmon on an NT workstation requires a couple of steps. The following + are for installing Netmon V4.00.349, which comes with Microsoft Windows NT Server + 4.0, on Microsoft Windows NT Workstation 4.0. The process should be similar + for other version of Windows NT / Netmon. You will need both the Microsoft Windows + NT Server 4.0 Install CD and the Workstation 4.0 Install CD. + + + Initially you will need to install 'Network Monitor Tools and Agent' on the + NT Server. To do this + + + Goto Start - Settings - Control Panel - Network - Services - Add + Select the 'Network Monitor Tools and Agent' and click on 'OK'. + Click 'OK' on the Network Control Panel. + Insert the Windows NT Server 4.0 install CD when prompted. + + + At this point the Netmon files should exist in %SYSTEMROOT%\System32\netmon\*.*. + Two subdirectories exist as well, parsers\ which contains the necessary DLL's + for parsing the netmon packet dump, and captures\. + + In order to install the Netmon tools on an NT Workstation, you will first need to + install the 'Network Monitor Agent' from the Workstation install CD. + + Goto Start - Settings - Control Panel - Network - Services - Add + Select the 'Network Monitor Agent' and click on 'OK'. + Click 'OK' on the Network Control Panel. + Insert the Windows NT Workstation 4.0 install CD when prompted. + + + + Now copy the files from the NT Server in %SYSTEMROOT%\System32\netmon\*.* to + %SYSTEMROOT%\System32\netmon\*.* on the Workstation and set permissions as + you deem appropriate for your site. You will need administrative rights on the + NT box to run netmon. + + To install Netmon on a Windows 9x box install the network monitor agent from + the Windows 9x CD (\admin\nettools\netmon). + There is a readme file located with the netmon driver files on the CD if you need + information on how to do this. Copy the files from a working Netmon installation. + + + + + +What other help can I get ? + + There are many sources of information available in the form of mailing lists, RFC's + and documentation. The docs that come with the samba distribution contain very + good explanations of general SMB topics such as browsing. + +URLs and similar + + + + + Home of Samba site + http://samba.org. We have a mirror near you ! + + The Development document + on the Samba mirrors might mention your problem. If so, + it might mean that the developers are working on it. + + Ignacio Coupeau has a very comprehesive look at LDAP with Samba at + + http://www.unav.es/cti/ldap-smb-howto.html + Be a little carefull however, I suspect that it does not specificly + address samba 2.2.x. The HEAD pre-2.1 may possibly be the best + stream to look at. + + Lars Kneschke's site covers + Samba-TNG at + + http://www.kneschke.de/projekte/samba_tng, but again, a + lot of it does not apply to the main stream Samba. + + See how Scott Merrill simulates a BDC behaviour at + + http://www.skippy.net/linux/smb-howto.html. + + Although 2.0.7 has almost had its day as a PDC, I (drb) will + keep the 2.0.7 PDC pages at + http://bioserve.latrobe.edu.au/samba going for a while yet. + + Misc links to CIFS information + http://samba.org/cifs/ + + NT Domains for Unix + http://mailhost.cb1.com/~lkcl/ntdom/ + + FTP site for older SMB specs: + + ftp://ftp.microsoft.com/developr/drg/CIFS/ + + + + +There are a number of documents that no longer appear to live at their + origional home. Any one know where the following may be found ? + + CIFS/E Browser Protocol draft-leach-cifs-browser-spec-00.txt + CIFS Remote Administration Protocol draft-leach-cifs-rap-spec-00.txt + CIFS Logon and Pass Through Authentication draft-leach-cifs-logon-spec-00.txt + A Common Internet File System (CIFS/1.0) Protocol draft-leach-cifs-v1-spec-01.txt + CIFS Printing Specification draft-leach-cifs-print-spec-00.txt + RFC1001 (March '87) Protocol standard for a NetBIOS service on a TCP/UDP transport: Concepts and methods. + http://ds.internic.net/rfc/rfc1001.txt + RFC1002 (March '87) Protocol standard for a NetBIOS service on a TCP/UDP transport: Detailed specifications. + http://ds.internic.net/rfc/rfc1002.txt + Microsoft's main CIFS page: http://www.microsoft.com/workshop/networking/cifs/ + + + + + +How do I get help from the mailing lists ? + + There are a number of Samba related mailing lists. Go to http://samba.org, click on your nearest mirror + and then click on Support and then click on + Samba related mailing lists. + + For questions relating to Samba TNG go to + http://www.samba-tng.org/ + It has been requested that you don't post questions about Samba-TNG to the + main stream Samba lists. + +If you post a message to one of the lists please + observe the following guide lines : + + Always remember that the developers are volunteers, they are + not paid and they never guarantee to produce a particular feature at + a particular time. Any time lines are 'best guess' and nothing more. + + + Always mention what version of samba you are using and what + operating system its running under. You should probably list the + relevant sections of your smb.conf file, at least the options + in [global] that affect PDC support. + + In addition to the version, if you obtained Samba via + CVS mention the date when you last checked it out. + + Try and make your question clear and brief, lots of long, + convoluted questions get deleted before they are completely read ! + Don't post html encoded messages (if you can select colour or font + size its html). + + If you run one of those niffy 'I'm on holidays' things when + you are away, make sure its configured to not answer mailing lists. + + + Don't cross post. Work out which is the best list to post to + and see what happens, ie don't post to both samba-ntdom and samba-technical. + Many people active on the lists subscribe to more + than one list and get annoyed to see the same message two or more times. + Often someone will see a message and thinking it would be better dealt + with on another, will forward it on for you. + + You might include partial + log files written at a debug level set to as much as 20. + Please don't send the entire log but enough to give the context of the + error messages. + + (Possibly) If you have a complete netmon trace ( from the opening of + the pipe to the error ) you can send the *.CAP file as well. + + Please think carefully before attaching a document to an email. + Consider pasting the relevant parts into the body of the message. The samba + mailing lists go to a huge number of people, do they all need a copy of your + smb.conf in their attach directory ? + + + + + +How do I get off the mailing lists ? + To have your name removed from a samba mailing list, go to the + same place you went to to get on it. Go to http://samba.org, click on your nearest mirror + and then click on Support and then click on + Samba related mailing lists. Or perhaps see + here + + Please don't post messages to the list asking to be removed, you will just + be refered to the above address (unless that process failed in some way...) + + + + + + + + + + + -- cgit