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| author | Jelmer Vernooij <jelmer@samba.org> | 2003-09-23 21:24:11 +0000 |
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| committer | Jelmer Vernooij <jelmer@samba.org> | 2003-09-23 21:24:11 +0000 |
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diff --git a/docs/htmldocs/upgrading-to-3.0.html b/docs/htmldocs/upgrading-to-3.0.html new file mode 100644 index 0000000000..5106814203 --- /dev/null +++ b/docs/htmldocs/upgrading-to-3.0.html @@ -0,0 +1,200 @@ +<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Chapter 30. Upgrading from Samba-2.x to Samba-3.0.0</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.60.1"><link rel="home" href="index.html" title="SAMBA Project Documentation"><link rel="up" href="migration.html" title="Part IV. Migration and Updating"><link rel="previous" href="migration.html" title="Part IV. Migration and Updating"><link rel="next" href="NT4Migration.html" title="Chapter 31. 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 30. Upgrading from Samba-2.x to Samba-3.0.0</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 30. Upgrading from Samba-2.x to Samba-3.0.0</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><tt class="email"><<a href="mailto:jelmer@samba.org">jelmer@samba.org</a>></tt></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><tt class="email"><<a href="mailto:jht@samba.org">jht@samba.org</a>></tt></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><tt class="email"><<a href="mailto:jerry@samba.org">jerry@samba.org</a>></tt></p></div></div></div></div><div><p class="pubdate">June 30, 2003</p></div></div><div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><a href="upgrading-to-3.0.html#id2964134">Quick Migration Guide</a></dt><dt><a href="upgrading-to-3.0.html#id2964257">New Features in Samba-3</a></dt><dt><a href="upgrading-to-3.0.html#id2964410">Configuration Parameter Changes</a></dt><dd><dl><dt><a href="upgrading-to-3.0.html#id2964433">Removed Parameters</a></dt><dt><a href="upgrading-to-3.0.html#id2964564">New Parameters</a></dt><dt><a href="upgrading-to-3.0.html#id2964983">Modified Parameters (Changes in Behavior):</a></dt></dl></dd><dt><a href="upgrading-to-3.0.html#id2965064">New Functionality</a></dt><dd><dl><dt><a href="upgrading-to-3.0.html#id2965071">Databases</a></dt><dt><a href="upgrading-to-3.0.html#id2965324">Changes in Behavior</a></dt><dt><a href="upgrading-to-3.0.html#id2965395">Charsets</a></dt><dt><a href="upgrading-to-3.0.html#id2965417">Passdb Backends and Authentication</a></dt><dt><a href="upgrading-to-3.0.html#id2965577">LDAP</a></dt></dl></dd></dl></div><p> +This chapter deals exclusively with the differences between Samba-3.0.0 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 3.0.0. +</p><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2964134"></a>Quick Migration Guide</h2></div></div><div></div></div><p> +Samba-3.0.0 default behavior should be approximately the same as Samba-2.2.x. +The default behavior when the new parameter <a class="indexterm" name="id2964147"></a><i class="parameter"><tt>passdb backend</tt></i> +is not defined in the <tt class="filename">smb.conf</tt> file provides the same default behviour as Samba-2.2.x +with <a class="indexterm" name="id2964171"></a><i class="parameter"><tt>encrypt passwords</tt></i> = Yes, and +will use the <tt class="filename">smbpasswd</tt> database. +</p><p> +So why say that <span class="emphasis"><em>behavior should be approximately the same as Samba-2.2.x?</em></span> Because +Samba-3.0.0 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> +If the Samba-2.2.x system was using an LDAP backend, and there is no time to update the LDAP +database, then make sure that <a class="indexterm" name="id2964213"></a><i class="parameter"><tt>passdb backend</tt></i> = ldapsam_compat +is specified in the <tt class="filename">smb.conf</tt> 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 <b class="command">pdbedit</b>. +See <link linkend="pdbeditthing">. +</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2964257"></a>New Features in Samba-3</h2></div></div><div></div></div><p> +The major new features are: +</p><div class="orderedlist"><ol type="1"><li><p> + 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> + Unicode support. Samba will now negotiate unicode on the wire and + internally there is a much better infrastructure for multi-byte + and unicode character sets. + </p></li><li><p> + 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> + New filename mangling system. The filename mangling system has been + completely rewritten. An internal database now stores mangling maps + persistently. + </p></li><li><p> + 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> + Samba now negotiates NT-style status32 codes on the wire. This + considerably improves error handling. + </p></li><li><p> + Better Windows 200x/XP printing support including publishing + printer attributes in Active Directory. + </p></li><li><p> + New loadable RPC modules for passdb backends and character sets. + </p></li><li><p> + New default dual-daemon winbindd support for better performance. + </p></li><li><p> + 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> + Support for establishing trust relationships with Windows NT 4.0 + Domain Controllers. + </p></li><li><p> + 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> + 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="id2964410"></a>Configuration Parameter Changes</h2></div></div><div></div></div><p> +This section contains a brief listing of changes to <tt class="filename">smb.conf</tt> options +in the 3.0.0 release. Please refer to the smb.conf(5) man page for +complete descriptions of new or modified parameters. +</p><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2964433"></a>Removed Parameters</h3></div></div><div></div></div><p>(Ordered Alphabetically):</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>force unknown acl user </p></li><li><p>nt smb support </p></li><li><p>post script </p></li><li><p>printer driver </p></li><li><p>printer driver file </p></li><li><p>printer driver location </p></li><li><p>status </p></li><li><p>stip dot </p></li><li><p>total print jobs </p></li><li><p>use rhosts </p></li><li><p>valid chars </p></li><li><p>vfs options </p></li></ul></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2964564"></a>New Parameters</h3></div></div><div></div></div><p>(New parameters have been grouped by function):</p><p>Remote Management</p><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>set primary group script </p></li></ul></div><p>Authentication:</p><div class="itemizedlist"><ul type="disc"><li><p>auth methods </p></li><li><p>realm </p></li></ul></div><p>Protocol Options:</p><div class="itemizedlist"><ul type="disc"><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>disable netbios </p></li><li><p>ntlm auth </p></li><li><p>paranoid server security </p></li><li><p>server schannel </p></li><li><p>server signing </p></li><li><p>smb ports </p></li><li><p>use spnego </p></li></ul></div><p>File Service:</p><div class="itemizedlist"><ul type="disc"><li><p>get quota command </p></li><li><p>hide special files </p></li><li><p>hide unwriteable files </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>msdfs proxy </p></li><li><p>set quota command </p></li><li><p>use sendfile </p></li><li><p>vfs objects </p></li></ul></div><p>Printing:</p><div class="itemizedlist"><ul type="disc"><li><p>max reported print jobs </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>unicode </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>winbind enable local accounts </p></li><li><p>winbind trusted domains only </p></li><li><p>template primary group </p></li><li><p>enable rid algorithm </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 trust ids </p></li><li><p>ldap user suffix </p></li></ul></div><p>General Configuration:</p><div class="itemizedlist"><ul type="disc"><li><p>preload modules </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="id2964983"></a>Modified Parameters (Changes in Behavior):</h3></div></div><div></div></div><div class="itemizedlist"><ul type="disc"><li><p>encrypt passwords (enabled by default) </p></li><li><p>mangling method (set to hash2 by default) </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 (enabled by default) </p></li><li><p>winbind cache time (increased to 5 minutes) </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></ul></div></div></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2965064"></a>New Functionality</h2></div></div><div></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2965071"></a>Databases</h3></div></div><div></div></div><p> + This section contains brief descriptions of any new databases + introduced in Samba-3. Please remember to backup your existing + ${lock directory}/*tdb before upgrading to Samba-3. Samba will + upgrade databases as they are opened (if necessary), but downgrading + from 3.0 to 2.2 is an unsupported path. + </p><p> + The new tdb files are described in <link linkend="tdbfiledesc">. + </p><div class="table"><a name="tdbfiledesc"></a><p class="title"><b>Table 30.1. TDB File Descriptions</b></p><table summary="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">gencache</td><td align="justify">Generic caching db</td><td align="left">no</td></tr><tr><td align="left">group_mapping</td><td align="justify"><p>Mapping table from Windows groups/SID to UNIX groups</p></td><td align="left">yes</td></tr><tr><td align="left">idmap</td><td align="justify"><p>new ID map table from SIDS to UNIX UIDs/GIDs</p></td><td align="left">yes</td></tr><tr><td align="left">namecache</td><td align="justify">Name resolution cache entries</td><td align="left">no</td></tr><tr><td align="left">netlogon_unigrp</td><td align="justify"><p>Cache of universal group membership obtained when operating + as a member of a Windows domain</p></td><td align="left">no</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 db tables via the winreg RPCs</p></td><td align="left">no</td></tr></tbody></table></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2965324"></a>Changes in Behavior</h3></div></div><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> + 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 as NT_STATUS_LOGON_FAILURE. There is no + current work around to re-establish the Samba-2.2 behavior. + </p></li><li><p> + 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="id2965395"></a>Charsets</h3></div></div><div></div></div><p> + You might experience problems with special characters when communicating with old DOS + clients. Codepage support has changed in Samba-3. Read <link linkend="unicode">, for details. + </p></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2965417"></a>Passdb Backends and Authentication</h3></div></div><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> + 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 <tt class="filename">smb.conf</tt>. + </p></li><li><p> + Inclusion of new <a class="indexterm" name="id2965466"></a><i class="parameter"><tt>security</tt></i> = ads option for integration + with an Active Directory domain using the native Windows Kerberos 5 and LDAP protocols. + </p></li></ol></div><p> + Samba-3 also includes the possibility of setting up chains + of authentication methods + (<a class="indexterm" name="id2965488"></a><i class="parameter"><tt>auth methods</tt></i>) and account + storage backends + (<a class="indexterm" name="id2965503"></a><i class="parameter"><tt>passdb backend</tt></i>). + Please refer to the <tt class="filename">smb.conf</tt> + man page and <link linkend="passdb">, 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="id2965538"></a> + Certain functions of the <b class="command">smbpasswd</b> tool have been split between the + new <b class="command">smbpasswd</b> utility, the <b class="command">net</b> tool and the new <b class="command">pdbedit</b> + 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="id2965577"></a>LDAP</h3></div></div><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="id2965590"></a>New Schema</h4></div></div><div></div></div><p> + A new object class (sambaSamAccount) has been introduced to replace + the old sambaAccount. This change aids us 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: + </p><pre class="screen"> + <tt class="prompt">$ </tt>ldapsearch .... -b "ou=people,dc=..." > old.ldif + <tt class="prompt">$ </tt>convertSambaAccount <DOM SID> old.ldif new.ldif + </pre><p> + The <DOM SID> can be obtained by running +</p><pre class="screen"> +<tt class="prompt">$ </tt><b class="userinput"><tt>net getlocalsid <DOMAINNAME></tt></b> +</pre><p> + on the Samba PDC as root. + </p><p> + The old sambaAccount schema may still be used by specifying the + <i class="parameter"><tt>ldapsam_compat</tt></i> 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 sambaAccount has not changed + in the Samba-3 samba.schema file. + </p><p> + Other new object classes and their uses include: + </p><div class="itemizedlist"><ul type="disc"><li><p> + sambaDomain 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> + 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> + sambaUNIXIdPool 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> + sambaIdmapEntry 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="id2965767"></a>New Suffix for Searching</h4></div></div><div></div></div><p> + The following new smb.conf parameters have been added to aid in directing + certain LDAP queries when <i class="parameter"><tt>passdb backend = ldapsam://...</tt></i> 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> + If an <i class="parameter"><tt>ldap suffix</tt></i> is defined, it will be appended to all of the + remaining sub-suffix parameters. In this case, the order of the suffix + listings in smb.conf is important. Always place the <i class="parameter"><tt>ldap suffix</tt></i> first + in the list. + </p><p> + Due to a limitation in Samba's <tt class="filename">smb.conf</tt> parsing, you should not surround + the DNs with quotation marks. + </p></div><div class="sect3" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id2965876"></a>IdMap LDAP Support</h4></div></div><div></div></div><p> + 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 onterose in the "ou=idmap,dc=quenya,dc=org" partition. + </p><table class="simplelist" border="0" summary="Simple list"><tr><td> </td></tr><tr><td><i class="parameter"><tt>[global]</tt></i></td></tr><tr><td>...</td></tr><tr><td><i class="parameter"><tt>idmap backend = ldap:ldap://onterose/</tt></i></td></tr><tr><td><i class="parameter"><tt>ldap idmap suffix = ou=idmap,dc=quenya,dc=org</tt></i></td></tr><tr><td><i class="parameter"><tt>idmap uid = 40000-50000</tt></i></td></tr><tr><td><i class="parameter"><tt>idmap gid = 40000-50000</tt></i></td></tr></table><p> + 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 31. Migration from NT4 PDC to Samba-3 PDC</td></tr></table></div></body></html> |