upgrading-to-3.0.html [plain text]
<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Chapter 35. Upgrading from Samba-2.x to Samba-3.0.23</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.71.0"><link rel="start" href="index.html" title="The Official Samba-3 HOWTO and Reference Guide"><link rel="up" href="migration.html" title="Part IV. Migration and Updating"><link rel="prev" href="migration.html" title="Part IV. Migration and Updating"><link rel="next" href="NT4Migration.html" title="Chapter 36. Migration from NT4 PDC to Samba-3 PDC"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 35. Upgrading from Samba-2.x to Samba-3.0.23</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="migration.html">Prev</a> </td><th width="60%" align="center">Part IV. Migration and Updating</th><td width="20%" align="right"> <a accesskey="n" href="NT4Migration.html">Next</a></td></tr></table><hr></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="upgrading-to-3.0"></a>Chapter 35. Upgrading from Samba-2.x to Samba-3.0.23</h2></div><div><div class="author"><h3 class="author"><span class="firstname">Jelmer</span> <span class="othername">R.</span> <span class="surname">Vernooij</span></h3><div class="affiliation"><span class="orgname">The Samba Team<br></span><div class="address"><p><code class="email"><<a href="mailto:jelmer@samba.org">jelmer@samba.org</a>></code></p></div></div></div></div><div><div class="author"><h3 class="author"><span class="firstname">John</span> <span class="othername">H.</span> <span class="surname">Terpstra</span></h3><div class="affiliation"><span class="orgname">Samba Team<br></span><div class="address"><p><code class="email"><<a href="mailto:jht@samba.org">jht@samba.org</a>></code></p></div></div></div></div><div><div class="author"><h3 class="author"><span class="firstname">Gerald</span> <span class="othername">(Jerry)</span> <span class="surname">Carter</span></h3><div class="affiliation"><span class="orgname">Samba Team<br></span><div class="address"><p><code class="email"><<a href="mailto:jerry@samba.org">jerry@samba.org</a>></code></p></div></div></div></div><div><p class="pubdate">June 30, 2003</p></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="upgrading-to-3.0.html#id432254">Quick Migration Guide</a></span></dt><dt><span class="sect1"><a href="upgrading-to-3.0.html#id432380">New Features in Samba-3</a></span></dt><dt><span class="sect1"><a href="upgrading-to-3.0.html#id432649">Configuration Parameter Changes</a></span></dt><dd><dl><dt><span class="sect2"><a href="upgrading-to-3.0.html#id432688">Removed Parameters</a></span></dt><dt><span class="sect2"><a href="upgrading-to-3.0.html#id432854">New Parameters</a></span></dt><dt><span class="sect2"><a href="upgrading-to-3.0.html#id433402">Modified Parameters (Changes in Behavior)</a></span></dt></dl></dd><dt><span class="sect1"><a href="upgrading-to-3.0.html#id433530">New Functionality</a></span></dt><dd><dl><dt><span class="sect2"><a href="upgrading-to-3.0.html#id433554">TDB Data Files</a></span></dt><dt><span class="sect2"><a href="upgrading-to-3.0.html#id433892">Changes in Behavior</a></span></dt><dt><span class="sect2"><a href="upgrading-to-3.0.html#id433980">Passdb Backends and Authentication</a></span></dt><dt><span class="sect2"><a href="upgrading-to-3.0.html#id434143">LDAP</a></span></dt></dl></dd></dl></div><p>
<a class="indexterm" name="id432231"></a>
<a class="indexterm" name="id432238"></a>
<a class="indexterm" name="id432244"></a>
This chapter deals exclusively with the differences between Samba-3.0.23 and Samba-2.2.8a.
It points out where configuration parameters have changed, and provides a simple guide for
the move from 2.2.x to 3.0.23.
</p><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id432254"></a>Quick Migration Guide</h2></div></div></div><p>
Samba-3.0.23 default behavior should be approximately the same as Samba-2.2.x.
The default behavior when the new parameter <a class="indexterm" name="id432263"></a>passdb backend
is not defined in the <code class="filename">smb.conf</code> file provides the same default behavior as Samba-2.2.x
with <a class="indexterm" name="id432277"></a>encrypt passwords = Yes and
will use the <code class="filename">smbpasswd</code> database.
</p><p>
<a class="indexterm" name="id432293"></a>
<a class="indexterm" name="id432300"></a>
So why say that <span class="emphasis"><em>behavior should be approximately the same as Samba-2.2.x</em></span>? Because
Samba-3.0.23 can negotiate new protocols, such as support for native Unicode, that may result in
differing protocol code paths being taken. The new behavior under such circumstances is not
exactly the same as the old one. The good news is that the domain and machine SIDs will be
preserved across the upgrade.
</p><p>
<a class="indexterm" name="id432317"></a>
<a class="indexterm" name="id432324"></a>
<a class="indexterm" name="id432331"></a>
<a class="indexterm" name="id432337"></a>
If the Samba-2.2.x system is using an LDAP backend, and there is no time to update the LDAP
database, then make sure that <a class="indexterm" name="id432346"></a>passdb backend = ldapsam_compat
is specified in the <code class="filename">smb.conf</code> file. For the rest, behavior should remain more or less the same.
At a later date, when there is time to implement a new Samba-3-compatible LDAP backend, it is possible
to migrate the old LDAP database to the new one through use of the <code class="literal">pdbedit</code>.
See <a href="passdb.html#pdbeditthing" title="The pdbedit Tool">The <span class="emphasis"><em>pdbedit</em></span> Command</a>.
</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id432380"></a>New Features in Samba-3</h2></div></div></div><p>
The major new features are:
</p><div class="orderedlist"><ol type="1"><li><p>
<a class="indexterm" name="id432401"></a>
<a class="indexterm" name="id432408"></a>
Active Directory support. This release is able to join an ADS realm
as a member server and authenticate users using LDAP/Kerberos.
</p></li><li><p>
<a class="indexterm" name="id432420"></a>
<a class="indexterm" name="id432427"></a>
Unicode support. Samba will now negotiate Unicode on the wire, and
internally there is a much better infrastructure for multibyte
and Unicode character sets.
</p></li><li><p>
<a class="indexterm" name="id432439"></a>
New authentication system. The internal authentication system has
been almost completely rewritten. Most of the changes are internal,
but the new authoring system is also very configurable.
</p></li><li><p>
<a class="indexterm" name="id432452"></a>
New filename mangling system. The filename mangling system has been
completely rewritten. An internal database now stores mangling maps
persistently.
</p></li><li><p>
<a class="indexterm" name="id432465"></a>
New “<span class="quote">net</span>” command. A new “<span class="quote">net</span>” command has been added. It is
somewhat similar to the “<span class="quote">net</span>” command in Windows. Eventually, we
plan to replace a bunch of other utilities (such as smbpasswd)
with subcommands in “<span class="quote">net</span>”.
</p></li><li><p>
<a class="indexterm" name="id432491"></a>
Samba now negotiates NT-style status32 codes on the wire. This
considerably improves error handling.
</p></li><li><p>
<a class="indexterm" name="id432503"></a>
Better Windows 200x/XP printing support, including publishing
printer attributes in Active Directory.
</p></li><li><p>
<a class="indexterm" name="id432515"></a>
<a class="indexterm" name="id432522"></a>
<a class="indexterm" name="id432529"></a>
New loadable RPC modules for passdb backends and character sets.
</p></li><li><p>
<a class="indexterm" name="id432541"></a>
New default dual-daemon winbindd support for better performance.
</p></li><li><p>
<a class="indexterm" name="id432552"></a>
<a class="indexterm" name="id432559"></a>
<a class="indexterm" name="id432566"></a>
Support for migrating from a Windows NT 4.0 domain to a Samba
domain and maintaining user, group, and domain SIDs.
</p></li><li><p>
<a class="indexterm" name="id432578"></a>
<a class="indexterm" name="id432585"></a>
Support for establishing trust relationships with Windows NT 4.0
domain controllers.
</p></li><li><p>
<a class="indexterm" name="id432597"></a>
<a class="indexterm" name="id432604"></a>
<a class="indexterm" name="id432610"></a>
Initial support for a distributed Winbind architecture using
an LDAP directory for storing SID to UID/GID mappings.
</p></li><li><p>
Major updates to the Samba documentation tree.
</p></li><li><p>
<a class="indexterm" name="id432627"></a>
<a class="indexterm" name="id432634"></a>
Full support for client and server SMB signing to ensure
compatibility with default Windows 2003 security settings.
</p></li></ol></div><p>
Plus lots of other improvements!
</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id432649"></a>Configuration Parameter Changes</h2></div></div></div><p>
This section contains a brief listing of changes to <code class="filename">smb.conf</code> options since the Samba-2.2.x series up to and
including Samba-3.0.23.
</p><p>
Please refer to the smb.conf(5) man page for complete descriptions of new or modified
parameters.
</p><p>
Whenever a Samba update or upgrade is performed it is highly recommended to read the file called
<span class="emphasis"><em>WHATSNEW.txt</em></span> that is part of the Samba distribution tarball. This file may also
be obtain on-line from the Samba <a href="http://www.samba.org/samba/" target="_top">web site</a>, in
the right column, under Current Stable Release, by clicking on <span class="emphasis"><em>Release Notes</em></span>.
</p><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id432688"></a>Removed Parameters</h3></div></div></div><a class="indexterm" name="id432693"></a><p>
In alphabetical order, these are the parameters eliminated from Samba-2.2.x through 3.0.23.
</p><div class="itemizedlist"><ul type="disc"><li><p>admin log</p></li><li><p>alternate permissions</p></li><li><p>character set</p></li><li><p>client codepage</p></li><li><p>code page directory</p></li><li><p>coding system</p></li><li><p>domain admin group</p></li><li><p>domain guest group</p></li><li><p>enable rid algorithm</p></li><li><p>enable svcctl</p></li><li><p>force unknown acl user</p></li><li><p>hosts equiv</p></li><li><p>ldap filter</p></li><li><p>min password length</p></li><li><p>nt smb support</p></li><li><p>post script</p></li><li><p>printer admin</p></li><li><p>printer driver</p></li><li><p>printer driver file</p></li><li><p>printer driver location</p></li><li><p>read size</p></li><li><p>source environment</p></li><li><p>status </p></li><li><p>strip dot </p></li><li><p>total print jobs</p></li><li><p>unicode</p></li><li><p>use rhosts</p></li><li><p>valid chars</p></li><li><p>vfs options</p></li><li><p>winbind enable local accounts</p></li><li><p>winbind max idle children</p></li><li><p>wins partners</p></li></ul></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id432854"></a>New Parameters</h3></div></div></div><p>The following new parameters have been released up to and including Samba 3.0.23 (grouped by function:)</p><p>Remote Management</p><a class="indexterm" name="id432867"></a><div class="itemizedlist"><ul type="disc"><li><p>abort shutdown script</p></li><li><p>shutdown script</p></li></ul></div><p>User and Group Account Management</p><div class="itemizedlist"><ul type="disc"><li><p>add group script</p></li><li><p>add machine script</p></li><li><p>add user to group script</p></li><li><p>algorithmic rid base</p></li><li><p>delete group script</p></li><li><p>delete user from group script</p></li><li><p>passdb backend</p></li><li><p>rename user script</p></li><li><p>set primary group script</p></li><li><p>username map script</p></li></ul></div><p>Authentication</p><div class="itemizedlist"><ul type="disc"><li><p>auth methods</p></li><li><p>ldap password sync</p></li><li><p>passdb expand explicit</p></li><li><p>realm</p></li></ul></div><p>Protocol Options</p><div class="itemizedlist"><ul type="disc"><li><p>add port command</p></li><li><p>afs token lifetime</p></li><li><p>client lanman auth</p></li><li><p>client NTLMv2 auth</p></li><li><p>client schannel</p></li><li><p>client signing</p></li><li><p>client use spnego</p></li><li><p>defer sharing violations</p></li><li><p>disable netbios</p></li><li><p>dmapi support</p></li><li><p>enable privileges</p></li><li><p>use kerberos keytab</p></li><li><p>log nt token command</p></li><li><p>ntlm auth</p></li><li><p>paranoid server security </p></li><li><p>sendfile</p></li><li><p>server schannel</p></li><li><p>server signing</p></li><li><p>smb ports</p></li><li><p>svcctl list</p></li><li><p>use spnego</p></li></ul></div><p>File Service</p><div class="itemizedlist"><ul type="disc"><li><p>allocation roundup size</p></li><li><p>acl check permissions</p></li><li><p>acl group control</p></li><li><p>acl map full control</p></li><li><p>aio read size</p></li><li><p>aio write size</p></li><li><p>dfree cache time</p></li><li><p>dfree command</p></li><li><p>ea support</p></li><li><p>enable asu support</p></li><li><p>fam change notify</p></li><li><p>force unknown acl user</p></li><li><p>get quota command</p></li><li><p>hide special files</p></li><li><p>hide unwriteable files</p></li><li><p>inherit owner</p></li><li><p>hostname lookups</p></li><li><p>kernel change notify</p></li><li><p>mangle prefix</p></li><li><p>map acl inherit</p></li><li><p>map read only</p></li><li><p>max stat cache size</p></li><li><p>msdfs proxy</p></li><li><p>open files database hash size</p></li><li><p>set quota command</p></li><li><p>store dos attributes</p></li><li><p>use sendfile</p></li><li><p>usershare allow guests</p></li><li><p>usershare max shares</p></li><li><p>usershare owner only</p></li><li><p>usershare path</p></li><li><p>usershare prefix allow list</p></li><li><p>usershare prefix deny list</p></li><li><p>usershare template share</p></li><li><p>vfs objects</p></li></ul></div><p>Printing</p><div class="itemizedlist"><ul type="disc"><li><p>cups options</p></li><li><p>cups server</p></li><li><p>force printername</p></li><li><p>iprint server</p></li><li><p>max reported print jobs</p></li><li><p>printcap cache time</p></li></ul></div><p>Unicode and Character Sets</p><div class="itemizedlist"><ul type="disc"><li><p>display charset</p></li><li><p>dos charset</p></li><li><p>UNIX charset</p></li></ul></div><p>SID to UID/GID Mappings</p><div class="itemizedlist"><ul type="disc"><li><p>idmap backend</p></li><li><p>idmap gid</p></li><li><p>idmap uid</p></li><li><p>username map script</p></li><li><p>winbind nss info</p></li><li><p>winbind offline logon</p></li><li><p>winbind refresh tickets</p></li><li><p>winbind trusted domains only</p></li><li><p>template primary group</p></li></ul></div><p>LDAP</p><div class="itemizedlist"><ul type="disc"><li><p>ldap delete dn</p></li><li><p>ldap group suffix</p></li><li><p>ldap idmap suffix</p></li><li><p>ldap machine suffix</p></li><li><p>ldap passwd sync</p></li><li><p>ldap replication sleep</p></li><li><p>ldap timeout</p></li><li><p>ldap user suffix</p></li></ul></div><p>General Configuration</p><div class="itemizedlist"><ul type="disc"><li><p>eventlog list</p></li><li><p>preload modules</p></li><li><p>reset on zero vc</p></li><li><p>privatedir</p></li></ul></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id433402"></a>Modified Parameters (Changes in Behavior)</h3></div></div></div><div class="itemizedlist"><ul type="disc"><li><p>acl group control (new default is No, deprecated parameter)</p></li><li><p>change notify timeout (scope changed)</p></li><li><p>dos filemode (disabled by default)</p></li><li><p>dos filetimes (enabled by default)</p></li><li><p>enable asu support (disabled by default)</p></li><li><p>enable privileges (enabled by default)</p></li><li><p>encrypt passwords (enabled by default) </p></li><li><p>host msdfs (enabled by default)</p></li><li><p>mangling method (set to hash2 by default) </p></li><li><p>map to guest</p></li><li><p>only user (deprecated)</p></li><li><p>passwd chat</p></li><li><p>passwd program</p></li><li><p>password server</p></li><li><p>restrict anonymous (integer value)</p></li><li><p>security (new ads value)</p></li><li><p>strict locking (auto by default)</p></li><li><p>winbind cache time (increased to 5 minutes)</p></li><li><p>winbind enum groups (disabled by default)</p></li><li><p>winbind enum users (disabled by default)</p></li><li><p>winbind nested groups (enabled by default)</p></li><li><p>winbind uid (deprecated in favor of idmap uid)</p></li><li><p>winbind gid (deprecated in favor of idmap gid)</p></li><li><p>winbindd nss info</p></li><li><p>write cache (deprecated)</p></li></ul></div></div></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id433530"></a>New Functionality</h2></div></div></div><p>
<a class="indexterm" name="id433538"></a>
The major changes in behavior since that Samba-2.2.x series are documented in this section.
Please refer to the <code class="filename">WHATSNEW.txt</code> file that ships with every release of
Samba to obtain detailed information regarding the changes that have been made during the
life of the current Samba release.
</p><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id433554"></a>TDB Data Files</h3></div></div></div><a class="indexterm" name="id433560"></a><p>
Refer to <a href="install.html" title="Chapter 1. How to Install and Test SAMBA">Installation, Chapter 1</a>, <a href="install.html#tdbdocs" title="TDB Database File Information">Chapter 1</a>
for information pertaining to the Samba-3 data files, their location and the information that must be
preserved across server migrations, updates and upgrades.
</p><p>
<a class="indexterm" name="id433588"></a>
Please remember to back up your existing ${lock directory}/*tdb before upgrading to Samba-3. If necessary, Samba will
upgrade databases as they are opened. Downgrading from Samba-3 to 2.2, or reversion to an earlier version
of Samba-3 from a later release, is an unsupported path.
</p><p>
<a class="indexterm" name="id433600"></a>
The old Samba-2.2.x tdb files are described in <a href="upgrading-to-3.0.html#oldtdbfiledesc" title="Table 35.1. Samba-2.2.x TDB File Descriptions">the next table</a>.
</p><div class="table"><a name="oldtdbfiledesc"></a><p class="title"><b>Table 35.1. Samba-2.2.x TDB File Descriptions</b></p><div class="table-contents"><table summary="Samba-2.2.x TDB File Descriptions" border="1"><colgroup><col align="left"><col align="justify"><col align="left"></colgroup><thead><tr><th align="left">Name</th><th align="justify">Description</th><th align="center">Backup?</th></tr></thead><tbody><tr><td align="left">account_policy</td><td align="justify">User policy settings</td><td align="left">yes</td></tr><tr><td align="left">brlock</td><td align="justify">Byte-range file locking information.</td><td align="left">no</td></tr><tr><td align="left">connections</td><td align="justify"><p>Client connection information</p></td><td align="left">no</td></tr><tr><td align="left">locking</td><td align="justify">Temporary file locking data.</td><td align="left">no</td></tr><tr><td align="left">messages</td><td align="justify"><p>Temporary storage of messages being processed by smbd.</p></td><td align="left">no</td></tr><tr><td align="left">ntdrivers</td><td align="justify"><p>Stores per-printer driver information.</p></td><td align="left">yes</td></tr><tr><td align="left">ntforms</td><td align="justify"><p>Stores per-printer forms information.</p></td><td align="left">yes</td></tr><tr><td align="left">ntprinters</td><td align="justify"><p>Stores the per-printer devmode configuration settings.</p></td><td align="left">yes</td></tr><tr><td align="left">printing/*.tdb</td><td align="justify"><p>Cached output from lpq command created on a per-print-service basis.</p></td><td align="left">no</td></tr><tr><td align="left">registry</td><td align="justify"><p>Read-only Samba registry skeleton that provides support for
exporting various database tables via the winreg RPCs.</p></td><td align="left">no</td></tr><tr><td align="left">sessionid</td><td align="justify"><p>Temporary cache for miscellaneous session information.</p></td><td align="left">no</td></tr><tr><td align="left">share_info</td><td align="justify">Share ACL settings.</td><td align="left">yes</td></tr><tr><td align="left">unexpected</td><td align="justify"><p>Packets received for which no process was listening.</p></td><td align="left">no</td></tr><tr><td align="left">winbindd_cache</td><td align="justify"><p>Cache of identity information received from an NT4 or an ADS domain.</p></td><td align="left">yes</td></tr><tr><td align="left">winbindd_idmap</td><td align="justify"><p>New ID map table from SIDS to UNIX UIDs/GIDs.</p></td><td align="left">yes</td></tr></tbody></table></div></div><br class="table-break"></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id433892"></a>Changes in Behavior</h3></div></div></div><p>
The following issues are known changes in behavior between Samba-2.2 and
Samba-3 that may affect certain installations of Samba.
</p><div class="orderedlist"><ol type="1"><li><p>
<a class="indexterm" name="id433911"></a>
<a class="indexterm" name="id433918"></a>
<a class="indexterm" name="id433925"></a>
When operating as a member of a Windows domain, Samba-2.2 would map any users authenticated by the remote DC
to the “<span class="quote">guest account</span>” if a UID could not be obtained via the getpwnam() call. Samba-3 rejects
the connection with the error message “<span class="quote">NT_STATUS_LOGON_FAILURE.</span>” There is no current workaround
to re-establish the Samba-2.2 behavior.
</p></li><li><p>
<a class="indexterm" name="id433946"></a>
<a class="indexterm" name="id433953"></a>
When adding machines to a Samba-2.2 controlled domain, the
“<span class="quote">add user script</span>” was used to create the UNIX identity of the
machine trust account. Samba-3 introduces a new “<span class="quote">add machine
script</span>” that must be specified for this purpose. Samba-3 will
not fall back to using the “<span class="quote">add user script</span>” in the absence of
an “<span class="quote">add machine script</span>”.
</p></li></ol></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id433980"></a>Passdb Backends and Authentication</h3></div></div></div><p>
There have been a few new changes that Samba administrators should be
aware of when moving to Samba-3.
</p><div class="orderedlist"><ol type="1"><li><p>
<a class="indexterm" name="id434000"></a>
Encrypted passwords have been enabled by default in order to
interoperate better with out-of-the-box Windows client
installations. This does mean that either (a) a Samba account
must be created for each user, or (b) “<span class="quote">encrypt passwords = no</span>”
must be explicitly defined in <code class="filename">smb.conf</code>.
</p></li><li><p>
<a class="indexterm" name="id434023"></a>
<a class="indexterm" name="id434029"></a>
<a class="indexterm" name="id434036"></a>
Inclusion of new <a class="indexterm" name="id434043"></a>security = ads option for integration
with an Active Directory domain using the native Windows Kerberos 5 and LDAP protocols.
</p></li></ol></div><p>
<a class="indexterm" name="id434055"></a>
Samba-3 also includes the possibility of setting up chains of authentication methods (<a class="indexterm" name="id434063"></a>auth methods) and account storage backends (<a class="indexterm" name="id434071"></a>passdb backend). Please refer to
the <code class="filename">smb.conf</code> man page and <a href="passdb.html" title="Chapter 11. Account Information Databases">Account Information Databases</a>, for
details. While both parameters assume sane default values, it is likely that you will need to understand what
the values actually mean in order to ensure Samba operates correctly.
</p><p>
<a class="indexterm" name="id434096"></a>
<a class="indexterm" name="id434102"></a>
<a class="indexterm" name="id434109"></a>
Certain functions of the <code class="literal">smbpasswd</code> tool have been split between the
new <code class="literal">smbpasswd</code> utility, the <code class="literal">net</code> tool, and the new <code class="literal">pdbedit</code>
utility. See the respective man pages for details.
</p></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id434143"></a>LDAP</h3></div></div></div><p>
This section outlines the new features effecting Samba/LDAP integration.
</p><div class="sect3" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id434152"></a>New Schema</h4></div></div></div><p>
<a class="indexterm" name="id434160"></a>
<a class="indexterm" name="id434167"></a>
<a class="indexterm" name="id434174"></a>
<a class="indexterm" name="id434180"></a>
A new object class (sambaSamAccount) has been introduced to replace
the old sambaAccount. This change aids in the renaming of attributes
to prevent clashes with attributes from other vendors. There is a
conversion script (examples/LDAP/convertSambaAccount) to modify an LDIF
file to the new schema.
</p><p>
Example:
<a class="indexterm" name="id434193"></a>
</p><pre class="screen">
<code class="prompt">$ </code>ldapsearch .... -LLL -b "ou=people,dc=..." > old.ldif
<code class="prompt">$ </code>convertSambaAccount --sid <DOM SID> --input old.ldif --output new.ldif
</pre><p>
<a class="indexterm" name="id434224"></a>
The <DOM SID> can be obtained by running
</p><pre class="screen">
<code class="prompt">$ </code><strong class="userinput"><code>net getlocalsid <DOMAINNAME></code></strong>
</pre><p>
<a class="indexterm" name="id434249"></a>
on the Samba PDC as root.
</p><p>
Under Samba-2.x the domain SID can be obtained by executing:
<a class="indexterm" name="id434260"></a>
</p><pre class="screen">
<code class="prompt">$ </code><strong class="userinput"><code>smbpasswd -S <DOMAINNAME></code></strong>
</pre><p>
</p><p>
<a class="indexterm" name="id434286"></a>
<a class="indexterm" name="id434292"></a>
<a class="indexterm" name="id434299"></a>
<a class="indexterm" name="id434306"></a>
The old <code class="literal">sambaAccount</code> schema may still be used by specifying the
<em class="parameter"><code>ldapsam_compat</code></em> passdb backend. However, the sambaAccount and
associated attributes have been moved to the historical section of
the schema file and must be uncommented before use if needed.
The Samba-2.2 object class declaration for a <code class="literal">sambaAccount</code> has not changed
in the Samba-3 <code class="filename">samba.schema</code> file.
</p><p>
Other new object classes and their uses include:
</p><div class="itemizedlist"><ul type="disc"><li><p>
<a class="indexterm" name="id434350"></a>
<a class="indexterm" name="id434356"></a>
<a class="indexterm" name="id434363"></a>
<a class="indexterm" name="id434370"></a>
<a class="indexterm" name="id434376"></a>
<a class="indexterm" name="id434383"></a>
<code class="literal">sambaDomain</code> domain information used to allocate RIDs
for users and groups as necessary. The attributes are added
in “<span class="quote">ldap suffix</span>” directory entry automatically if
an idmap UID/GID range has been set and the “<span class="quote">ldapsam</span>”
passdb backend has been selected.
</p></li><li><p>
<a class="indexterm" name="id434412"></a>
<a class="indexterm" name="id434419"></a>
<a class="indexterm" name="id434426"></a>
sambaGroupMapping an object representing the
relationship between a posixGroup and a Windows
group/SID. These entries are stored in the “<span class="quote">ldap
group suffix</span>” and managed by the “<span class="quote">net groupmap</span>” command.
</p></li><li><p>
<a class="indexterm" name="id434448"></a>
<a class="indexterm" name="id434455"></a>
<a class="indexterm" name="id434462"></a>
<a class="indexterm" name="id434468"></a>
<code class="literal">sambaUNIXIdPool</code> created in the “<span class="quote">ldap idmap suffix</span>” entry
automatically and contains the next available “<span class="quote">idmap UID</span>” and
“<span class="quote">idmap GID</span>”.
</p></li><li><p>
<a class="indexterm" name="id434500"></a>
<a class="indexterm" name="id434506"></a>
<code class="literal">sambaIdmapEntry</code> object storing a mapping between a
SID and a UNIX UID/GID. These objects are created by the
idmap_ldap module as needed.
</p></li></ul></div></div><div class="sect3" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id434527"></a>New Suffix for Searching</h4></div></div></div><p>
<a class="indexterm" name="id434534"></a>
<a class="indexterm" name="id434540"></a>
<a class="indexterm" name="id434547"></a>
<a class="indexterm" name="id434554"></a>
<a class="indexterm" name="id434561"></a>
<a class="indexterm" name="id434568"></a>
<a class="indexterm" name="id434574"></a>
The following new <code class="filename">smb.conf</code> parameters have been added to aid in directing
certain LDAP queries when <em class="parameter"><code>passdb backend = ldapsam://...</code></em> has been
specified.
</p><div class="itemizedlist"><ul type="disc"><li><p>ldap suffix used to search for user and computer accounts.</p></li><li><p>ldap user suffix used to store user accounts.</p></li><li><p>ldap machine suffix used to store machine trust accounts.</p></li><li><p>ldap group suffix location of posixGroup/sambaGroupMapping entries.</p></li><li><p>ldap idmap suffix location of sambaIdmapEntry objects.</p></li></ul></div><p>
<a class="indexterm" name="id434638"></a>
<a class="indexterm" name="id434645"></a>
If an <em class="parameter"><code>ldap suffix</code></em> is defined, it will be appended to all of the
remaining subsuffix parameters. In this case, the order of the suffix
listings in <code class="filename">smb.conf</code> is important. Always place the <em class="parameter"><code>ldap suffix</code></em> first
in the list.
</p><p>
Due to a limitation in Samba's <code class="filename">smb.conf</code> parsing, you should not surround
the domain names with quotation marks.
</p></div><div class="sect3" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id434683"></a>IdMap LDAP Support</h4></div></div></div><p>
<a class="indexterm" name="id434691"></a>
Samba-3 supports an LDAP backend for the idmap subsystem. The
following options inform Samba that the idmap table should be
stored on the directory server <span class="emphasis"><em>onterose</em></span> in the ou=Idmap,dc=quenya,dc=org partition.
</p><table class="simplelist" border="0" summary="Simple list"><tr><td> </td></tr><tr><td><em class="parameter"><code>[global]</code></em></td></tr><tr><td>...</td></tr><tr><td><a class="indexterm" name="id434722"></a><em class="parameter"><code>idmap backend = ldap:ldap://onterose/</code></em></td></tr><tr><td><a class="indexterm" name="id434735"></a><em class="parameter"><code>ldap idmap suffix = ou=Idmap</code></em></td></tr><tr><td><a class="indexterm" name="id434747"></a><em class="parameter"><code>idmap uid = 40000-50000</code></em></td></tr><tr><td><a class="indexterm" name="id434760"></a><em class="parameter"><code>idmap gid = 40000-50000</code></em></td></tr></table><p>
<a class="indexterm" name="id434774"></a>
This configuration allows Winbind installations on multiple servers to
share a UID/GID number space, thus avoiding the interoperability problems
with NFS that were present in Samba-2.2.
</p></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="migration.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="migration.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="NT4Migration.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part IV. Migration and Updating </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 36. Migration from NT4 PDC to Samba-3 PDC</td></tr></table></div></body></html>