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diff --git a/docs/docbook/projdoc/upgrading-to-3.0.xml b/docs/docbook/projdoc/upgrading-to-3.0.xml index b4c0732a654..74af0cbb9e3 100644 --- a/docs/docbook/projdoc/upgrading-to-3.0.xml +++ b/docs/docbook/projdoc/upgrading-to-3.0.xml @@ -1,63 +1,571 @@ <chapter id="upgrading-to-3.0"> <chapterinfo> &author.jelmer; - <pubdate>25 October 2002</pubdate> + &author.jht; + &author.jerry; + <pubdate>June 30, 2003</pubdate> </chapterinfo> <title>Upgrading from Samba-2.x to Samba-3.0.0</title> + <sect1> -<title>Charsets</title> +<title>New Features in Samba-3</title> -<para>You might experience problems with special characters -when communicating with old DOS clients. Codepage -support has changed in samba 3.0. Read the chapter -<link linkend="unicode">Unicode support</link> for details. +<para> +Major new features: </para> -</sect1> +<orderedlist> + <listitem><para> + Active Directory support. This release is able to join a ADS realm + as a member server and authenticate users using LDAP/kerberos. + </para></listitem> -<sect1> -<title>Obsolete configuration options</title> + <listitem><para> + Unicode support. Samba will now negotiate UNICODE on the wire and + internally there is now a much better infrastructure for multi-byte + and UNICODE character sets. + </para></listitem> + + <listitem><para> + New authentication system. The internal authentication system has + been almost completely rewritten. Most of the changes are internal, + but the new auth system is also very configurable. + </para></listitem> + + <listitem><para> + New filename mangling system. The filename mangling system has been + completely rewritten. An internal database now stores mangling maps + persistently. This needs lots of testing. + </para></listitem> + + <listitem><para> + New "net" command. A new "net" command has been added. It is + somewhat similar to the "net" command in windows. Eventually we + plan to replace a bunch of other utilities (such as smbpasswd) + with subcommands in "net", at the moment only a few things are + implemented. + </para></listitem> + + <listitem><para> + Samba now negotiates NT-style status32 codes on the wire. This + improves error handling a lot. + </para></listitem> + + <listitem><para> + Better Windows 2000/XP/2003 printing support including publishing + printer attributes in active directory + </para></listitem> + + <listitem><para> + New loadable RPC modules + </para></listitem> + + <listitem><para> + New dual-daemon winbindd support (-B) for better performance + </para></listitem> + + <listitem><para> + Support for migrating from a Windows NT 4.0 domain to a Samba + domain and maintaining user, group and domain SIDs + </para></listitem> + + <listitem><para> + Support for establishing trust relationships with Windows NT 4.0 + domain controllers + </para></listitem> + <listitem><para> + Initial support for a distributed Winbind architecture using + an LDAP directory for storing SID to uid/gid mappings + </para></listitem> + + <listitem><para> + Major updates to the Samba documentation tree. + </para></listitem> +</orderedlist> <para> -In 3.0, the following configuration options have been removed. +Plus lots of other improvements! </para> -<simplelist> -<member>printer driver (replaced by new driver procedures) </member> -<member>printer driver file (replaced by new driver procedures)</member> -<member>printer driver location (replaced by new driver procedures)</member> -<member>use rhosts</member> -<member>postscript</member> -<member>client code page (replaced by dos charset)</member> -<member>vfs path</member> -<member>vfs options</member> -</simplelist> </sect1> <sect1> -<title>Password Backend</title> +<title>Configuration Parameter Changes</title> <para> -Effective with the release of samba-3 it is now imperative that the password backend -be correctly defined in smb.conf. +This section contains a brief listing of changes to smb.conf options +in the 3.0.0 release. Please refer to the smb.conf(5) man page for +complete descriptions of new or modified parameters. </para> -<para> -Those migrating from samba-2.x with plaintext password support need the following: -<emphasis>passdb backend = guest</emphasis>. -</para> +<sect2> +<title>Removed Parameters</title> -<para> -Those migrating from samba-2.x with encrypted password support should add to smb.conf -<emphasis>passdb backend = smbpasswd, guest</emphasis>. -</para> +<para>(order alphabetically):</para> -<para> -LDAP using Samba-2.x systems can continue to operate with the following entry -<emphasis>passdb backend = ldapsam_compat, guest</emphasis>. -</para> +<itemizedlist> + <listitem><para>admin log </para></listitem> + <listitem><para>alternate permissions </para></listitem> + <listitem><para>character set </para></listitem> + <listitem><para>client codepage </para></listitem> + <listitem><para>code page directory </para></listitem> + <listitem><para>coding system </para></listitem> + <listitem><para>domain admin group </para></listitem> + <listitem><para>domain guest group </para></listitem> + <listitem><para>force unknown acl user </para></listitem> + <listitem><para>nt smb support </para></listitem> + <listitem><para>post script </para></listitem> + <listitem><para>printer driver </para></listitem> + <listitem><para>printer driver file </para></listitem> + <listitem><para>printer driver location </para></listitem> + <listitem><para>status </para></listitem> + <listitem><para>total print jobs </para></listitem> + <listitem><para>use rhosts </para></listitem> + <listitem><para>valid chars </para></listitem> + <listitem><para>vfs options </para></listitem> +</itemizedlist> + +</sect2> + +<sect2> +<title>New Parameters</title> + +<para>(new parameters have been grouped by function):</para> + +<para>Remote management</para> + +<itemizedlist> + <listitem><para>abort shutdown script </para></listitem> + <listitem><para>shutdown script </para></listitem> +</itemizedlist> + +<para>User and Group Account Management</para> + +<itemizedlist> + <listitem><para>add group script </para></listitem> + <listitem><para>add machine script </para></listitem> + <listitem><para>add user to group script </para></listitem> + <listitem><para>algorithmic rid base </para></listitem> + <listitem><para>delete group script </para></listitem> + <listitem><para>delete user from group script </para></listitem> + <listitem><para>passdb backend </para></listitem> + <listitem><para>set primary group script </para></listitem> +</itemizedlist> + +<para>Authentication</para> + +<itemizedlist> + <listitem><para>auth methods </para></listitem> + <listitem><para>ads server </para></listitem> + <listitem><para>realm </para></listitem> +</itemizedlist> + +<para>Protocol Options</para> + +<itemizedlist> + <listitem><para>client lanman auth </para></listitem> + <listitem><para>client NTLMv2 auth </para></listitem> + <listitem><para>client schannel </para></listitem> + <listitem><para>client signing </para></listitem> + <listitem><para>client use spnego </para></listitem> + <listitem><para>disable netbios </para></listitem> + <listitem><para>ntlm auth </para></listitem> + <listitem><para>paranoid server security </para></listitem> + <listitem><para>server schannel </para></listitem> + <listitem><para>smb ports </para></listitem> + <listitem><para>use spnego </para></listitem> +</itemizedlist> + +<para>File Service</para> + +<itemizedlist> + <listitem><para>get quota command </para></listitem> + <listitem><para>hide special files </para></listitem> + <listitem><para>hide unwriteable files </para></listitem> + <listitem><para>hostname lookups </para></listitem> + <listitem><para>kernel change notify </para></listitem> + <listitem><para>mangle prefix </para></listitem> + <listitem><para>msdfs proxy </para></listitem> + <listitem><para>set quota command </para></listitem> + <listitem><para>use sendfile </para></listitem> + <listitem><para>vfs objects </para></listitem> +</itemizedlist> + +<para>Printing</para> + +<itemizedlist> + <listitem><para>max reported print jobs </para></listitem> +</itemizedlist> + + +<para>UNICODE and Character Sets</para> + +<itemizedlist> + <listitem><para>display charset </para></listitem> + <listitem><para>dos charset </para></listitem> + <listitem><para>unicode </para></listitem> + <listitem><para>unix charset </para></listitem> +</itemizedlist> + +<para>SID to uid/gid Mappings</para> + +<itemizedlist> + <listitem><para>idmap backend </para></listitem> + <listitem><para>idmap gid </para></listitem> + <listitem><para>idmap only </para></listitem> + <listitem><para>idmap uid </para></listitem> +</itemizedlist> + +<para>LDAP</para> + +<itemizedlist> + <listitem><para>ldap delete dn </para></listitem> + <listitem><para>ldap group suffix </para></listitem> + <listitem><para>ldap idmap suffix </para></listitem> + <listitem><para>ldap machine suffix </para></listitem> + <listitem><para>ldap passwd sync </para></listitem> + <listitem><para>ldap trust ids </para></listitem> + <listitem><para>ldap user suffix </para></listitem> +</itemizedlist> + +<para>General Configuration</para> + +<itemizedlist> + <listitem><para>preload modules </para></listitem> + <listitem><para>privatedir </para></listitem> +</itemizedlist> + +</sect2> + +<sect2> +<title>Modified Parameters (changes in behavior):</title> + +<itemizedlist> + <listitem><para>encrypt passwords (enabled by default) </para></listitem> + <listitem><para>mangling method (set to 'hash2' by default) </para></listitem> + <listitem><para>passwd chat </para></listitem> + <listitem><para>passwd program </para></listitem> + <listitem><para>restrict anonymous (integer value) </para></listitem> + <listitem><para>security (new 'ads' value) </para></listitem> + <listitem><para>strict locking (enabled by default) </para></listitem> + <listitem><para>winbind cache time (increased to 5 minutes) </para></listitem> + <listitem><para>winbind uid (deprecated in favor of 'idmap uid') </para></listitem> + <listitem><para>winbind gid (deprecated in favor of 'idmap gid') </para></listitem> +</itemizedlist> + +</sect2> + +</sect1> + +<sect1> +<title>New Functionality</title> + + <sect2> + <title>Databases</title> + + <para> + This section contains brief descriptions of any new databases + introduced in Samba 3.0. Please remember to backup your existing + ${lock directory}/*tdb before upgrading to Samba 3.0. Samba will + upgrade databases as they are opened (if necessary), but downgrading + from 3.0 to 2.2 is an unsupported path. + </para> + + + <table frame='all'><title>TDB File Descriptions</title> + <tgroup cols='3'> + <colspec align="left"/> + <colspec align="justify"/> + <colspec align="left"/> + <thead> + <row> + <entry align="left">Name</entry> + <entry align="justify">Description</entry> + <entry align="center">Backup?</entry> + </row> + </thead> + <tbody> + <row> + <entry>account_policy</entry> + <entry>User policy settings</entry> + <entry>yes</entry> + </row> + <row> + <entry>gencache</entry> + <entry>Generic caching db</entry> + <entry>no</entry> + </row> + <row> + <entry>group_mapping</entry> + <entry><para>Mapping table from Windows groups/SID to unix groups</para></entry> + <entry>yes</entry> + </row> + <row> + <entry>idmap</entry> + <entry><para>new ID map table from SIDS to UNIX uids/gids</para></entry> + <entry>yes</entry> + </row> + <row> + <entry>namecache</entry> + <entry>Name resolution cache entries</entry> + <entry>no</entry> + </row> + <row> + <entry>netlogon_unigrp</entry> + <entry><para>Cache of universal group membership obtained when operating + as a member of a Windows domain</para></entry> + <entry>no</entry> + </row> + <row> + <entry>printing/*.tdb</entry> + <entry><para>Cached output from 'lpq command' created on a per print + service basis</para></entry> + <entry>no</entry> + </row> + <row> + + <entry>registry</entry> + <entry><para>Read-only samba registry skeleton that provides support for + exporting various db tables via the winreg RPCs</para></entry> + <entry>no</entry> + </row> + </tbody> + </tgroup> + </table> + + </sect2> + + <sect2> + <title>Changes in Behavior</title> + + <para> + The following issues are known changes in behavior between Samba 2.2 and + Samba 3.0 that may affect certain installations of Samba. + </para> + + <orderedlist> + <listitem><para> + When operating as a member of a Windows domain, Samba 2.2 would + map any users authenticated by the remote DC to the 'guest account' + if a uid could not be obtained via the getpwnam() call. Samba 3.0 + rejects the connection as NT_STATUS_LOGON_FAILURE. There is no + current work around to re-establish the 2.2 behavior. + </para></listitem> + + <listitem><para> + When adding machines to a Samba 2.2 controlled domain, the + 'add user script' was used to create the UNIX identity of the + machine trust account. Samba 3.0 introduces a new 'add machine + script' that must be specified for this purpose. Samba 3.0 will + not fall back to using the 'add user script' in the absence of + an 'add machine script' + </para></listitem> + </orderedlist> + + </sect2> + + <sect2> + <title>Charsets</title> + + <para> + You might experience problems with special characters when communicating with old DOS + clients. Codepage support has changed in samba 3.0. Read the chapter + <link linkend="unicode">Unicode support</link> for details. + </para> + + </sect2> + + <sect2> + <title>Passdb Backends and Authentication</title> + + <para> + There have been a few new changes that Samba administrators should be + aware of when moving to Samba 3.0. + </para> + + <orderedlist> + <listitem><para> + Encrypted passwords have been enabled by default in order to + inter-operate 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) 'encrypt passwords = no' + must be explicitly defined in smb.conf. + </para></listitem> + + <listitem><para> + Inclusion of new <smbconfoption><name>security</name><value>ads</value></smbconfoption> option for integration + with an Active Directory domain using the native Windows + Kerberos 5 and LDAP protocols. + </para></listitem> + </orderedlist> + + <para> + Samba 3.0 also includes the possibility of setting up chains + of authentication methods + (<smbconfoption><name>auth methods</name></smbconfoption>) and account + storage backends + (<smbconfoption><name>passdb backend</name></smbconfoption>). + Please refer to the &smb.conf; + man page and <link linkend="passdb">the chapter about account information databases</link> 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. + </para> + + <para> + Certain functions of the smbpasswd(8) tool have been split between the + new smbpasswd(8) utility, the net(8) tool, and the new pdbedit(8) + utility. See the respective man pages for details. + </para> + + </sect2> + + <sect2> + <title>Charsets</title> + + <para> + You might experience problems with special characters when communicating with old DOS + clients. Codepage support has changed in samba 3.0. Read the chapter + <link linkend="unicode">Unicode support</link> for details. + </para> + + </sect2> + + <sect2> + <title>LDAP</title> + + <para> + This section outlines the new features affecting Samba / LDAP integration. + </para> + + <sect3> + <title>New Schema</title> + + <para> + 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 and LDIF + file to the new schema. + </para> + + <para> + Example: + </para> + <para><screen> + &prompt;ldapsearch .... -b "ou=people,dc=..." > old.ldif + &prompt;convertSambaAccount <DOM SID> old.ldif new.ldif + </screen></para> + + <para> + The <DOM SID> can be obtained by running 'net getlocalsid <DOMAINNAME> + on the Samba PDC as root. + </para> + + <para> + The old sambaAccount schema may still be used by specifying the + "ldapsam_compat" 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 2.2 object class declaration for a sambaAccount has not changed + in the 3.0 samba.schema file. + </para> + + <para> + Other new object classes and their uses include: + </para> + + <itemizedlist> + <listitem><para> + sambaDomain - domain information used to allocate rids + for users and groups as necessary. The attributes are added + in 'ldap suffix' directory entry automatically if + an idmap uid/gid range has been set and the 'ldapsam' + passdb backend has been selected. + </para></listitem> + + <listitem><para> + sambaGroupMapping - an object representing the + relationship between a posixGroup and a Windows + group/SID. These entries are stored in the 'ldap + group suffix' and managed by the 'net groupmap' command. + </para></listitem> + + <listitem><para> + sambaUnixIdPool - created in the 'ldap idmap suffix' entry + automatically and contains the next available 'idmap uid' and + 'idmap gid' + </para></listitem> + + <listitem><para> + sambaIdmapEntry - object storing a mapping between a + SID and a UNIX uid/gid. These objects are created by the + idmap_ldap module as needed. + </para></listitem> + </itemizedlist> + + </sect3> + + <sect3> + <title>New Suffix for Searching</title> + + <para> + The following new smb.conf parameters have been added to aid in directing + certain LDAP queries when 'passdb backend = ldapsam://...' has been + specified. + </para> + + <itemizedlist> + <listitem><para>ldap suffix - used to search for user and computer accounts</para></listitem> + <listitem><para>ldap user suffix - used to store user accounts</para></listitem> + <listitem><para>ldap machine suffix - used to store machine trust accounts</para></listitem> + <listitem><para>ldap group suffix - location of posixGroup/sambaGroupMapping entries</para></listitem> + <listitem><para>ldap idmap suffix - location of sambaIdmapEntry objects</para></listitem> + </itemizedlist> + + <para> + If an 'ldap suffix' 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 'ldap suffix' first + in the list. + </para> + + <para> + Due to a limitation in Samba's smb.conf parsing, you should not surround + the DN's with quotation marks. + </para> + + </sect3> + + <sect3> + <title>IdMap LDAP support</title> + + <para> + Samba 3.0 supports an ldap backend for the idmap subsystem. The + following options would inform Samba that the idmap table should be + stored on the directory server onterose in the "ou=idmap,dc=plainjoe, + dc=org" partition. + </para> + + <smbconfblock> + <smbconfsection>[global]</smbconfsection> + <member>...</member> + <smbconfoption><name>idmap backend</name><value>ldap:ldap://onterose/</value></smbconfoption> + <smbconfoption><name>ldap idmap suffix</name><value>ou=idmap,dc=plainjoe,dc=org</value></smbconfoption> + <smbconfoption><name>idmap uid</name><value>40000-50000</value></smbconfoption> + <smbconfoption><name>idmap gid</name><value>40000-50000</value></smbconfoption> + </smbconfblock> + + <para> + 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. + </para> + + </sect3> + + </sect2> </sect1> |