docs-xml/Samba3-HOWTO/TOSHARG-upgrading-to-3.0.xml

   1 <?xml version="1.0" encoding="iso-8859-1"?>
   2 <!DOCTYPE chapter PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
   3 <chapter id="upgrading-to-3.0">
   4 <chapterinfo>
   5         &author.jelmer;
   6         &author.jht;
   7         &author.jerry;
   8         <pubdate>August 16, 2007</pubdate>
   9 </chapterinfo>
  10
  11 <title>Updating and Upgrading Samba</title>
  12 <para>
  13 This chapter provides a detailed record of changes made during the 3.x series releases. At this time this
  14 series consists of the 3.0.x series that is under the GNU GPL version 2 license, and the Samba 3.2.x series
  15 that is being released under the terms of the GNU GPL version 3 license.
  16 </para>
  17
  18 <sect1>
  19 <title>Key Update Requirements</title>
  20 <para>
  21 Samba is a fluid product in which there may be significant changes between releases. Some of these changes are
  22 brought about as a result of changes in the protocols that are used by Microsoft Windows network clients as a
  23 result of security or functionality updates through official Microsoft patches and updates. Samba must track
  24 such changes, particularly where they affect the internal operation of Samba itself.
  25 </para>
  26
  27 <para>
  28 Please refer to any notes below that make explicit mention of the version of Samba you are using. In general,
  29 all changes that apply to a new release will apply to follow-on releases also. For example, changes to Samba
  30 3.0.23 affect all releases up to an including 3.0.25 and later.  Samba 3.2.x was originaly cut from Samba
  31 3.0.25 before 3.2.0-specific changes were applied. Unless a 3.0.x series feature is specifically revoked, the
  32 behavior of the 3.2.x series can be expected to follow the earlier pattern.
  33 </para>
  34
  35 <sect2>
  36 <title>Upgrading from Samba-3.0.x to Samba-3.2.0</title>
  37 <para>
  38 </para>
  39 </sect2>
  40
  41 <sect2 id="oldupdatenotes">
  42 <title>Upgrading from Samba-2.x to Samba-3.0.25</title>
  43 <para>
  44 <indexterm><primary>Samba differences</primary></indexterm>
  45 <indexterm><primary>changed parameters</primary></indexterm>
  46 <indexterm><primary>simple guide</primary></indexterm>
  47 This chapter deals exclusively with the differences between Samba-3.0.25 and Samba-2.2.8a.
  48 It points out where configuration parameters have changed, and provides a simple guide for
  49 the move from 2.2.x to 3.0.25.
  50 </para>
  51 </sect2>
  52
  53 <sect2>
  54 <title>Quick Migration Guide</title>
  55
  56 <para>
  57 Samba-3.0.25 default behavior should be approximately the same as Samba-2.2.x.
  58 The default behavior when the new parameter <smbconfoption name="passdb backend"/>
  59 is not defined in the &smb.conf; file provides the same default behavior as Samba-2.2.x
  60 with <smbconfoption name="encrypt passwords">Yes</smbconfoption> and
  61 will use the <filename>smbpasswd</filename> database.
  62 </para>
  63
  64 <para>
  65 <indexterm><primary>behavior approximately same</primary></indexterm>
  66 <indexterm><primary>differing protocol</primary></indexterm>
  67 So why say that <emphasis>behavior should be approximately the same as Samba-2.2.x</emphasis>? Because
  68 Samba-3.0.25 can negotiate new protocols, such as support for native Unicode, that may result in
  69 differing protocol code paths being taken. The new behavior under such circumstances is not
  70 exactly the same as the old one. The good news is that the domain and machine SIDs will be
  71 preserved across the upgrade.
  72 </para>
  73
  74 <para>
  75 <indexterm><primary>LDAP backend</primary></indexterm>
  76 <indexterm><primary>database</primary></indexterm>
  77 <indexterm><primary>pdbedit</primary></indexterm>
  78 <indexterm><primary>Samba-3-compatible LDAP backend</primary></indexterm>
  79 If the Samba-2.2.x system is using an LDAP backend, and there is no time to update the LDAP
  80 database, then make sure that <smbconfoption name="passdb backend">ldapsam_compat</smbconfoption>
  81 is specified in the &smb.conf; file. For the rest, behavior should remain more or less the same.
  82 At a later date, when there is time to implement a new Samba-3-compatible LDAP backend, it is possible
  83 to migrate the old LDAP database to the new one through use of the <command>pdbedit</command>.
  84 See <link linkend="pdbeditthing">The <emphasis>pdbedit</emphasis> Command</link>.
  85 </para>
  86
  87 </sect2>
  88 </sect1>
  89
  90 <sect1>
  91 <title>New Features in Samba-3.x Series</title>
  92 <para>
  93 </para>
  94
  95 <sect2>
  96 <title>New Features in Samba-3.2.x Series</title>
  97 <para>
  98 </para>
  99 </sect2>
 100
 101 <sect2>
 102 <title>New Features in Samba-3.0.x</title>
 103
 104 <para>
 105 The major new features are:
 106 </para>
 107
 108 <orderedlist numeration="arabic">
 109         <listitem><para>
 110 <indexterm><primary>ADS</primary></indexterm>
 111 <indexterm><primary>LDAP/Kerberos</primary></indexterm>
 112         Active Directory support. This release is able to join an ADS realm
 113         as a member server and authenticate users using LDAP/Kerberos.
 114         </para></listitem>
 115
 116         <listitem><para>
 117 <indexterm><primary>Unicode</primary></indexterm>
 118 <indexterm><primary>multibyte character sets</primary></indexterm>
 119         Unicode support. Samba will now negotiate Unicode on the wire, and
 120         internally there is a much better infrastructure for multibyte
 121         and Unicode character sets.
 122         </para></listitem>
 123
 124         <listitem><para>
 125 <indexterm><primary>authentication system</primary></indexterm>
 126         New authentication system. The internal authentication system has
 127         been almost completely rewritten. Most of the changes are internal,
 128         but the new authoring system is also very configurable.
 129         </para></listitem>
 130
 131         <listitem><para>
 132 <indexterm><primary>filename mangling</primary></indexterm>
 133         New filename mangling system. The filename mangling system has been
 134         completely rewritten. An internal database now stores mangling maps
 135         persistently.
 136         </para></listitem>
 137
 138         <listitem><para>
 139 <indexterm><primary>net command</primary></indexterm>
 140         New <quote>net</quote> command. A new <quote>net</quote> command has been added. It is
 141         somewhat similar to the <quote>net</quote> command in Windows. Eventually, we
 142         plan to replace a bunch of other utilities (such as smbpasswd)
 143         with subcommands in <quote>net</quote>.
 144         </para></listitem>
 145
 146         <listitem><para>
 147 <indexterm><primary>status32 codes</primary></indexterm>
 148         Samba now negotiates NT-style status32 codes on the wire. This
 149         considerably improves error handling.
 150         </para></listitem>
 151
 152         <listitem><para>
 153 <indexterm><primary>printer attributes publishing</primary></indexterm>
 154         Better Windows 200x/XP printing support, including publishing
 155         printer attributes in Active Directory.
 156         </para></listitem>
 157
 158         <listitem><para>
 159 <indexterm><primary>RPC modules</primary></indexterm>
 160 <indexterm><primary>passdb backends</primary></indexterm>
 161 <indexterm><primary>character sets</primary></indexterm>
 162         New loadable RPC modules for passdb backends and character sets.
 163         </para></listitem>
 164
 165         <listitem><para>
 166 <indexterm><primary>dual-daemon winbindd</primary></indexterm>
 167         New default dual-daemon winbindd support for better performance.
 168         </para></listitem>
 169
 170         <listitem><para>
 171 <indexterm><primary>migrating</primary></indexterm>
 172 <indexterm><primary>maintaining ids</primary></indexterm>
 173 <indexterm><primary>SID</primary></indexterm>
 174         Support for migrating from a Windows NT 4.0 domain to a Samba
 175         domain and maintaining user, group, and domain SIDs.
 176         </para></listitem>
 177
 178         <listitem><para>
 179 <indexterm><primary>trust relationships</primary></indexterm>
 180 <indexterm><primary>domain controllers</primary></indexterm>
 181         Support for establishing trust relationships with Windows NT 4.0
 182         domain controllers.
 183         </para></listitem>
 184
 185         <listitem><para>
 186 <indexterm><primary>Winbind architecture</primary></indexterm>
 187 <indexterm><primary>LDAP directory</primary></indexterm>
 188 <indexterm><primary>ID mapping</primary></indexterm>
 189         Initial support for a distributed Winbind architecture using
 190         an LDAP directory for storing SID to UID/GID mappings.
 191         </para></listitem>
 192
 193         <listitem><para>
 194         Major updates to the Samba documentation tree.
 195         </para></listitem>
 196
 197         <listitem><para>
 198 <indexterm><primary>SMB signing</primary></indexterm>
 199 <indexterm><primary>security settings</primary></indexterm>
 200         Full support for client and server SMB signing to ensure
 201         compatibility with default Windows 2003 security settings.
 202         </para></listitem>
 203 </orderedlist>
 204
 205 <para>
 206 Plus lots of other improvements!
 207 </para>
 208
 209
 210 <sect3>
 211 <title>Configuration Parameter Changes</title>
 212
 213 <para>
 214 This section contains a brief listing of changes to &smb.conf; options since the Samba-2.2.x series up to and
 215 including Samba-3.0.25.
 216 </para>
 217
 218 <para>
 219 Please refer to the smb.conf(5) man page for complete descriptions of new or modified
 220 parameters.
 221 </para>
 222
 223 <para>
 224 Whenever a Samba update or upgrade is performed it is highly recommended to read the file called
 225 <emphasis>WHATSNEW.txt</emphasis> that is part of the Samba distribution tarball. This file may also
 226 be obtain on-line from the Samba <ulink url="http://www.samba.org/samba/">web site</ulink>, in
 227 the right column, under Current Stable Release, by clicking on <emphasis>Release Notes</emphasis>.
 228 </para>
 229
 230 </sect3>
 231
 232 <sect3>
 233 <title>Removed Parameters</title>
 234
 235 <indexterm><primary>deleted parameters</primary></indexterm>
 236 <para>
 237 In alphabetical order, these are the parameters eliminated from Samba-2.2.x through 3.0.25.
 238 </para>
 239
 240 <itemizedlist>
 241         <listitem><para>admin log</para></listitem>
 242         <listitem><para>alternate permissions</para></listitem>
 243         <listitem><para>character set</para></listitem>
 244         <listitem><para>client codepage</para></listitem>
 245         <listitem><para>code page directory</para></listitem>
 246         <listitem><para>coding system</para></listitem>
 247         <listitem><para>domain admin group</para></listitem>
 248         <listitem><para>domain guest group</para></listitem>
 249         <listitem><para>enable rid algorithm</para></listitem>
 250         <listitem><para>enable svcctl</para></listitem>
 251         <listitem><para>force unknown acl user</para></listitem>
 252         <listitem><para>hosts equiv</para></listitem>
 253         <listitem><para>ldap filter</para></listitem>
 254         <listitem><para>min password length</para></listitem>
 255         <listitem><para>nt smb support</para></listitem>
 256         <listitem><para>post script</para></listitem>
 257         <listitem><para>printer admin</para></listitem>
 258         <listitem><para>printer driver</para></listitem>
 259         <listitem><para>printer driver file</para></listitem>
 260         <listitem><para>printer driver location</para></listitem>
 261         <listitem><para>read size</para></listitem>
 262         <listitem><para>source environment</para></listitem>
 263         <listitem><para>status </para></listitem>
 264         <listitem><para>strip dot </para></listitem>
 265         <listitem><para>total print jobs</para></listitem>
 266         <listitem><para>unicode</para></listitem>
 267         <listitem><para>use rhosts</para></listitem>
 268         <listitem><para>valid chars</para></listitem>
 269         <listitem><para>vfs options</para></listitem>
 270         <listitem><para>winbind enable local accounts</para></listitem>
 271         <listitem><para>winbind max idle children</para></listitem>
 272         <listitem><para>wins partners</para></listitem>
 273 </itemizedlist>
 274
 275 </sect3>
 276
 277 <sect3>
 278 <title>New Parameters</title>
 279
 280 <para>The following new parameters have been released up to and including Samba 3.0.25 (grouped by function:)</para>
 281
 282 <para>Remote Management</para>
 283
 284 <indexterm><primary>new parameters</primary></indexterm>
 285
 286 <itemizedlist>
 287         <listitem><para>abort shutdown script</para></listitem>
 288         <listitem><para>shutdown script</para></listitem>
 289 </itemizedlist>
 290
 291 <para>User and Group Account Management</para>
 292
 293 <itemizedlist>
 294         <listitem><para>add group script</para></listitem>
 295         <listitem><para>add machine script</para></listitem>
 296         <listitem><para>add user to group script</para></listitem>
 297         <listitem><para>algorithmic rid base</para></listitem>
 298         <listitem><para>delete group script</para></listitem>
 299         <listitem><para>delete user from group script</para></listitem>
 300         <listitem><para>passdb backend</para></listitem>
 301         <listitem><para>rename user script</para></listitem>
 302         <listitem><para>set primary group script</para></listitem>
 303         <listitem><para>username map script</para></listitem>
 304 </itemizedlist>
 305
 306 <para>Authentication</para>
 307
 308 <itemizedlist>
 309         <listitem><para>auth methods</para></listitem>
 310         <listitem><para>ldap password sync</para></listitem>
 311         <listitem><para>passdb expand explicit</para></listitem>
 312         <listitem><para>realm</para></listitem>
 313 </itemizedlist>
 314
 315 <para>Protocol Options</para>
 316
 317 <itemizedlist>
 318         <listitem><para>add port command</para></listitem>
 319         <listitem><para>afs token lifetime</para></listitem>
 320         <listitem><para>client lanman auth</para></listitem>
 321         <listitem><para>client NTLMv2 auth</para></listitem>
 322         <listitem><para>client schannel</para></listitem>
 323         <listitem><para>client signing</para></listitem>
 324         <listitem><para>client use spnego</para></listitem>
 325         <listitem><para>defer sharing violations</para></listitem>
 326         <listitem><para>disable netbios</para></listitem>
 327         <listitem><para>dmapi support</para></listitem>
 328         <listitem><para>enable privileges</para></listitem>
 329         <listitem><para>use kerberos keytab</para></listitem>
 330         <listitem><para>log nt token command</para></listitem>
 331         <listitem><para>ntlm auth</para></listitem>
 332         <listitem><para>paranoid server security </para></listitem>
 333         <listitem><para>sendfile</para></listitem>
 334         <listitem><para>server schannel</para></listitem>
 335         <listitem><para>server signing</para></listitem>
 336         <listitem><para>smb ports</para></listitem>
 337         <listitem><para>svcctl list</para></listitem>
 338         <listitem><para>use spnego</para></listitem>
 339 </itemizedlist>
 340
 341 <para>File Service</para>
 342
 343 <itemizedlist>
 344         <listitem><para>allocation roundup size</para></listitem>
 345         <listitem><para>acl check permissions</para></listitem>
 346         <listitem><para>acl group control</para></listitem>
 347         <listitem><para>acl map full control</para></listitem>
 348         <listitem><para>aio read size</para></listitem>
 349         <listitem><para>aio write size</para></listitem>
 350         <listitem><para>dfree cache time</para></listitem>
 351         <listitem><para>dfree command</para></listitem>
 352         <listitem><para>ea support</para></listitem>
 353         <listitem><para>enable asu support</para></listitem>
 354         <listitem><para>fam change notify</para></listitem>
 355         <listitem><para>force unknown acl user</para></listitem>
 356         <listitem><para>get quota command</para></listitem>
 357         <listitem><para>hide special files</para></listitem>
 358         <listitem><para>hide unwriteable files</para></listitem>
 359         <listitem><para>inherit owner</para></listitem>
 360         <listitem><para>hostname lookups</para></listitem>
 361         <listitem><para>kernel change notify</para></listitem>
 362         <listitem><para>mangle prefix</para></listitem>
 363         <listitem><para>map acl inherit</para></listitem>
 364         <listitem><para>map read only</para></listitem>
 365         <listitem><para>max stat cache size</para></listitem>
 366         <listitem><para>msdfs proxy</para></listitem>
 367         <listitem><para>open files database hash size</para></listitem>
 368         <listitem><para>set quota command</para></listitem>
 369         <listitem><para>store dos attributes</para></listitem>
 370         <listitem><para>use sendfile</para></listitem>
 371         <listitem><para>usershare allow guests</para></listitem>
 372         <listitem><para>usershare max shares</para></listitem>
 373         <listitem><para>usershare owner only</para></listitem>
 374         <listitem><para>usershare path</para></listitem>
 375         <listitem><para>usershare prefix allow list</para></listitem>
 376         <listitem><para>usershare prefix deny list</para></listitem>
 377         <listitem><para>usershare template share</para></listitem>
 378         <listitem><para>vfs objects</para></listitem>
 379 </itemizedlist>
 380
 381 <para>Printing</para>
 382
 383 <itemizedlist>
 384         <listitem><para>cups options</para></listitem>
 385         <listitem><para>cups server</para></listitem>
 386         <listitem><para>force printername</para></listitem>
 387         <listitem><para>iprint server</para></listitem>
 388         <listitem><para>max reported print jobs</para></listitem>
 389         <listitem><para>printcap cache time</para></listitem>
 390 </itemizedlist>
 391
 392
 393 <para>Unicode and Character Sets</para>
 394
 395 <itemizedlist>
 396         <listitem><para>display charset</para></listitem>
 397         <listitem><para>dos charset</para></listitem>
 398         <listitem><para>UNIX charset</para></listitem>
 399 </itemizedlist>
 400
 401 <para>SID to UID/GID Mappings</para>
 402
 403 <itemizedlist>
 404         <listitem><para>idmap backend</para></listitem>
 405         <listitem><para>idmap gid</para></listitem>
 406         <listitem><para>idmap uid</para></listitem>
 407         <listitem><para>username map script</para></listitem>
 408         <listitem><para>winbind nss info</para></listitem>
 409         <listitem><para>winbind offline logon</para></listitem>
 410         <listitem><para>winbind refresh tickets</para></listitem>
 411         <listitem><para>winbind trusted domains only</para></listitem>
 412         <listitem><para>template primary group</para></listitem>
 413 </itemizedlist>
 414
 415 <para>LDAP</para>
 416
 417 <itemizedlist>
 418         <listitem><para>ldap delete dn</para></listitem>
 419         <listitem><para>ldap group suffix</para></listitem>
 420         <listitem><para>ldap idmap suffix</para></listitem>
 421         <listitem><para>ldap machine suffix</para></listitem>
 422         <listitem><para>ldap passwd sync</para></listitem>
 423         <listitem><para>ldap replication sleep</para></listitem>
 424         <listitem><para>ldap timeout</para></listitem>
 425         <listitem><para>ldap user suffix</para></listitem>
 426 </itemizedlist>
 427
 428 <para>General Configuration</para>
 429
 430 <itemizedlist>
 431         <listitem><para>eventlog list</para></listitem>
 432         <listitem><para>preload modules</para></listitem>
 433         <listitem><para>reset on zero vc</para></listitem>
 434         <listitem><para>privatedir</para></listitem>
 435 </itemizedlist>
 436
 437 </sect3>
 438
 439 <sect3>
 440 <title>Modified Parameters (Changes in Behavior)</title>
 441
 442 <itemizedlist>
 443         <listitem><para>acl group control (new default is No, deprecated parameter)</para></listitem>
 444         <listitem><para>change notify timeout (scope changed)</para></listitem>
 445         <listitem><para>dos filemode (disabled by default)</para></listitem>
 446         <listitem><para>dos filetimes (enabled by default)</para></listitem>
 447         <listitem><para>enable asu support (disabled by default)</para></listitem>
 448         <listitem><para>enable privileges (enabled by default)</para></listitem>
 449         <listitem><para>encrypt passwords (enabled by default) </para></listitem>
 450         <listitem><para>host msdfs (enabled by default)</para></listitem>
 451         <listitem><para>mangling method (set to hash2 by default) </para></listitem>
 452         <listitem><para>map to guest</para></listitem>
 453         <listitem><para>only user (deprecated)</para></listitem>
 454         <listitem><para>passwd chat</para></listitem>
 455         <listitem><para>passwd program</para></listitem>
 456         <listitem><para>password server</para></listitem>
 457         <listitem><para>restrict anonymous (integer value)</para></listitem>
 458         <listitem><para>security (new ads value)</para></listitem>
 459         <listitem><para>strict locking (auto by default)</para></listitem>
 460         <listitem><para>winbind cache time (increased to 5 minutes)</para></listitem>
 461         <listitem><para>winbind enum groups (disabled by default)</para></listitem>
 462         <listitem><para>winbind enum users (disabled by default)</para></listitem>
 463         <listitem><para>winbind nested groups (enabled by default)</para></listitem>
 464         <listitem><para>winbind uid (deprecated in favor of idmap uid)</para></listitem>
 465         <listitem><para>winbind gid (deprecated in favor of idmap gid)</para></listitem>
 466         <listitem><para>winbindd nss info</para></listitem>
 467         <listitem><para>write cache (deprecated)</para></listitem>
 468 </itemizedlist>
 469
 470 </sect3>
 471
 472 </sect2>
 473
 474 <sect2>
 475 <title>New Functionality</title>
 476
 477         <para>
 478 <indexterm><primary>major changes</primary></indexterm>
 479         The major changes in behavior since that Samba-2.2.x series are documented in this section.
 480         Please refer to the <filename>WHATSNEW.txt</filename> file that ships with every release of
 481         Samba to obtain detailed information regarding the changes that have been made during the
 482         life of the current Samba release.
 483         </para>
 484
 485         <sect3>
 486         <title>TDB Data Files</title>
 487
 488 <indexterm><primary>tdb data files</primary></indexterm>
 489         <para>
 490         Refer to <link linkend="install">Installation, Chapter 1</link>, <link linkend="tdbdocs">Chapter 1</link>
 491         for information pertaining to the Samba-3 data files, their location and the information that must be
 492         preserved across server migrations, updates and upgrades.
 493         </para>
 494
 495         <para>
 496 <indexterm><primary>tdb file backup</primary></indexterm>
 497         Please remember to back up your existing ${lock directory}/*tdb before upgrading to Samba-3. If necessary,
 498         Samba will upgrade databases as they are opened. Downgrading from Samba-3 to 2.2, or reversion to an earlier
 499         version of Samba-3 from a later release, is an unsupported path.
 500         </para>
 501
 502         <para>
 503 <indexterm><primary>tdb file descriptions</primary></indexterm>
 504         The old Samba-2.2.x tdb files are described in <link linkend="oldtdbfiledesc">the next table</link>.
 505         </para>
 506
 507
 508         <table frame='all' id="oldtdbfiledesc"><title>Samba-2.2.x TDB File Descriptions</title>
 509         <tgroup cols='3'>
 510                         <colspec align="left"/>
 511                         <colspec align="justify" colwidth="1*"/>
 512                         <colspec align="left"/>
 513                 <thead>
 514                 <row>
 515                         <entry align="left">Name</entry>
 516                         <entry align="justify">Description</entry>
 517                         <entry align="center">Backup?</entry>
 518                 </row>
 519                 </thead>
 520                 <tbody>
 521                 <row>
 522                         <entry>account_policy</entry>
 523                         <entry>User policy settings</entry>
 524                         <entry>yes</entry>
 525                 </row>
 526                 <row>
 527                         <entry>brlock</entry>
 528                         <entry>Byte-range file locking information.</entry>
 529                         <entry>no</entry>
 530                 </row>
 531                 <row>
 532                         <entry>connections</entry>
 533                         <entry><para>Client connection information</para></entry>
 534                         <entry>no</entry>
 535                 </row>
 536                 <row>
 537                         <entry>locking</entry>
 538                         <entry>Temporary file locking data.</entry>
 539                         <entry>no</entry>
 540                 </row>
 541                 <row>
 542                         <entry>messages</entry>
 543                         <entry><para>Temporary storage of messages being processed by smbd.</para></entry>
 544                         <entry>no</entry>
 545                 </row>
 546        <row>
 547             <entry>ntdrivers</entry>
 548             <entry><para>Stores per-printer driver information.</para></entry>
 549                         <entry>yes</entry>
 550         </row>
 551         <row>
 552             <entry>ntforms</entry>
 553             <entry><para>Stores per-printer forms information.</para></entry>
 554                         <entry>yes</entry>
 555         </row>
 556         <row>
 557             <entry>ntprinters</entry>
 558             <entry><para>Stores the per-printer devmode configuration settings.</para></entry>
 559                         <entry>yes</entry>
 560         </row>
 561                 <row>
 562                         <entry>printing/*.tdb</entry>
 563                         <entry><para>Cached output from lpq command created on a per-print-service basis.</para></entry>
 564                         <entry>no</entry>
 565                 </row>
 566                 <row>
 567
 568                         <entry>registry</entry>
 569                         <entry><para>Read-only Samba registry skeleton that provides support for
 570                                 exporting various database tables via the winreg RPCs.</para></entry>
 571                         <entry>no</entry>
 572                 </row>
 573                 <row>
 574                         <entry>sessionid</entry>
 575                         <entry><para>Temporary cache for miscellaneous session information.</para></entry>
 576                         <entry>no</entry>
 577                 </row>
 578                 <row>
 579                         <entry>share_info</entry>
 580                         <entry>Share ACL settings.</entry>
 581                         <entry>yes</entry>
 582                 </row>
 583                 <row>
 584
 585                         <entry>unexpected</entry>
 586                         <entry><para>Packets received for which no process was listening.</para></entry>
 587                         <entry>no</entry>
 588                 </row>
 589                 <row>
 590                         <entry>winbindd_cache</entry>
 591                         <entry><para>Cache of identity information received from an NT4 or an ADS domain.</para></entry>
 592                         <entry>yes</entry>
 593                 </row>
 594                 <row>
 595                         <entry>winbindd_idmap</entry>
 596                         <entry><para>New ID map table from SIDS to UNIX UIDs/GIDs.</para></entry>
 597                         <entry>yes</entry>
 598                 </row>
 599                 </tbody>
 600         </tgroup>
 601         </table>
 602
 603         </sect3>
 604
 605         <sect3>
 606         <title>Changes in Behavior</title>
 607
 608         <para>
 609         The following issues are known changes in behavior between Samba-2.2 and
 610         Samba-3 that may affect certain installations of Samba.
 611         </para>
 612
 613         <orderedlist>
 614                 <listitem><para>
 615 <indexterm><primary>Windows domain</primary></indexterm>
 616 <indexterm><primary>getpwnam() call</primary></indexterm>
 617 <indexterm><primary>NT_STATUS_LOGON_FAILURE</primary></indexterm>
 618                 When operating as a member of a Windows domain, Samba-2.2 would map any users authenticated by the remote DC
 619                 to the <quote>guest account</quote> if a UID could not be obtained via the getpwnam() call. Samba-3 rejects
 620                 the connection with the error message <quote>NT_STATUS_LOGON_FAILURE.</quote> There is no current workaround
 621                 to re-establish the Samba-2.2 behavior.
 622                 </para></listitem>
 623
 624                 <listitem><para>
 625 <indexterm><primary>add user script</primary></indexterm>
 626 <indexterm><primary>add machine script</primary></indexterm>
 627                 When adding machines to a Samba-2.2 controlled domain, the
 628                 <quote>add user script</quote> was used to create the UNIX identity of the
 629                 machine trust account. Samba-3 introduces a new <quote>add machine
 630                 script</quote> that must be specified for this purpose. Samba-3 will
 631                 not fall back to using the <quote>add user script</quote> in the absence of
 632                 an <quote>add machine script</quote>.
 633                 </para></listitem>
 634         </orderedlist>
 635
 636         </sect3>
 637
 638         <sect3>
 639         <title>Passdb Backends and Authentication</title>
 640
 641         <para>
 642         There have been a few new changes that Samba administrators should be
 643         aware of when moving to Samba-3.
 644         </para>
 645
 646         <orderedlist>
 647                 <listitem><para>
 648 <indexterm><primary>encrypted passwords</primary></indexterm>
 649                 Encrypted passwords have been enabled by default in order to
 650                 interoperate better with out-of-the-box Windows client
 651                 installations. This does mean that either (a) a Samba account
 652                 must be created for each user, or (b) <quote>encrypt passwords = no</quote>
 653                 must be explicitly defined in &smb.conf;.
 654                 </para></listitem>
 655
 656                 <listitem><para>
 657 <indexterm><primary>ADS</primary></indexterm>
 658 <indexterm><primary>Kerberos</primary></indexterm>
 659 <indexterm><primary>LDAP</primary></indexterm>
 660                 Inclusion of new <smbconfoption name="security">ads</smbconfoption> option for integration
 661                 with an Active Directory domain using the native Windows Kerberos 5 and LDAP protocols.
 662                 </para></listitem>
 663         </orderedlist>
 664
 665         <para>
 666 <indexterm><primary>account storage backends</primary></indexterm>
 667         Samba-3 also includes the possibility of setting up chains of authentication methods (<smbconfoption
 668         name="auth methods"/>) and account storage backends (<smbconfoption name="passdb backend"/>).  Please refer to
 669         the &smb.conf; man page and <link linkend="passdb">Account Information Databases</link>, for
 670         details. While both parameters assume sane default values, it is likely that you will need to understand what
 671         the values actually mean in order to ensure Samba operates correctly.
 672         </para>
 673
 674         <para>
 675 <indexterm><primary>pdbedit</primary></indexterm>
 676 <indexterm><primary>smbpasswd</primary></indexterm>
 677 <indexterm><primary>net tool</primary></indexterm>
 678         Certain functions of the <command>smbpasswd</command> tool have been split between the
 679         new <command>smbpasswd</command> utility, the <command>net</command> tool, and the new <command>pdbedit</command>
 680         utility. See the respective man pages for details.
 681         </para>
 682
 683         </sect3>
 684
 685         <sect3>
 686         <title>LDAP</title>
 687
 688         <para>
 689         This section outlines the new features effecting Samba/LDAP integration.
 690         </para>
 691
 692                 <sect4>
 693                 <title>New Schema</title>
 694
 695                 <para>
 696 <indexterm><primary>object class</primary></indexterm>
 697 <indexterm><primary>sambaSamAccount</primary></indexterm>
 698 <indexterm><primary>LDIF</primary></indexterm>
 699 <indexterm><primary>attributes</primary></indexterm>
 700                 A new object class (sambaSamAccount) has been introduced to replace
 701                 the old sambaAccount. This change aids in the renaming of attributes
 702                 to prevent clashes with attributes from other vendors. There is a
 703                 conversion script (examples/LDAP/convertSambaAccount) to modify an LDIF
 704                 file to the new schema.
 705                 </para>
 706
 707                 <para>
 708                 Example:
 709 <indexterm><primary>ldapsearch</primary></indexterm>
 710                 </para>
 711                 <para><screen>
 712                 &prompt;ldapsearch .... -LLL -b "ou=people,dc=..." &gt; old.ldif
 713                 &prompt;convertSambaAccount --sid &lt;DOM SID&gt; --input old.ldif --output new.ldif
 714                 </screen></para>
 715
 716                 <para>
 717 <indexterm><primary>net</primary><secondary>getlocalsid</secondary></indexterm>
 718                 The &lt;DOM SID&gt; can be obtained by running
 719 <screen>
 720 &prompt;<userinput>net getlocalsid &lt;DOMAINNAME&gt;</userinput>
 721 </screen>
 722 <indexterm><primary>PDC</primary></indexterm>
 723                 on the Samba PDC as root.
 724                 </para>
 725
 726                 <para>
 727                 Under Samba-2.x the domain SID can be obtained by executing:
 728 <indexterm><primary>smbpasswd</primary></indexterm>
 729 <screen>
 730 &prompt;<userinput>smbpasswd -S &lt;DOMAINNAME&gt;</userinput>
 731 </screen>
 732                 </para>
 733
 734                 <para>
 735 <indexterm><primary>old sambaAccount</primary></indexterm>
 736 <indexterm><primary>ldapsam_compat</primary></indexterm>
 737 <indexterm><primary>object class declaration</primary></indexterm>
 738 <indexterm><primary>samba.schema</primary></indexterm>
 739                 The old <literal>sambaAccount</literal> schema may still be used by specifying the
 740                 <parameter>ldapsam_compat</parameter> passdb backend. However, the sambaAccount and
 741                 associated attributes have been moved to the historical section of
 742                 the schema file and must be uncommented before use if needed.
 743                 The Samba-2.2 object class declaration for a <literal>sambaAccount</literal> has not changed
 744                 in the Samba-3 <filename>samba.schema</filename> file.
 745                 </para>
 746
 747                 <para>
 748                 Other new object classes and their uses include:
 749                 </para>
 750
 751                 <itemizedlist>
 752                         <listitem><para>
 753 <indexterm><primary>sambaDomain</primary></indexterm>
 754 <indexterm><primary>domain information</primary></indexterm>
 755 <indexterm><primary>RID</primary></indexterm>
 756 <indexterm><primary>ldap suffix</primary></indexterm>
 757 <indexterm><primary>ldapsam</primary></indexterm>
 758 <indexterm><primary>idmap</primary></indexterm>
 759                         <literal>sambaDomain</literal> &smbmdash; domain information used to allocate RIDs
 760                         for users and groups as necessary. The attributes are added
 761                         in <quote>ldap suffix</quote> directory entry automatically if
 762                         an idmap UID/GID range has been set and the <quote>ldapsam</quote>
 763                         passdb backend has been selected.
 764                         </para></listitem>
 765
 766                         <listitem><para>
 767 <indexterm><primary>sambaGroupMapping</primary></indexterm>
 768 <indexterm><primary>ldap group suffix</primary></indexterm>
 769 <indexterm><primary>net groupmap</primary></indexterm>
 770                         sambaGroupMapping &smbmdash; an object representing the
 771                         relationship between a posixGroup and a Windows
 772                         group/SID. These entries are stored in the <quote>ldap
 773                         group suffix</quote> and managed by the <quote>net groupmap</quote> command.
 774                         </para></listitem>
 775
 776                         <listitem><para>
 777 <indexterm><primary>sambaUNIXIdPool</primary></indexterm>
 778 <indexterm><primary>ldap idmap suffix</primary></indexterm>
 779 <indexterm><primary>idmap UID</primary></indexterm>
 780 <indexterm><primary>idmap GID</primary></indexterm>
 781                         <literal>sambaUNIXIdPool</literal> &smbmdash; created in the <quote>ldap idmap suffix</quote> entry
 782                         automatically and contains the next available <quote>idmap UID</quote> and
 783                         <quote>idmap GID</quote>.
 784                         </para></listitem>
 785
 786                         <listitem><para>
 787 <indexterm><primary>sambaIdmapEntry</primary></indexterm>
 788 <indexterm><primary>idmap_ldap module</primary></indexterm>
 789                         <literal>sambaIdmapEntry</literal> &smbmdash; object storing a mapping between a
 790                         SID and a UNIX UID/GID. These objects are created by the
 791                         idmap_ldap module as needed.
 792                         </para></listitem>
 793                 </itemizedlist>
 794
 795                 </sect4>
 796
 797                 <sect4>
 798                 <title>New Suffix for Searching</title>
 799
 800                 <para>
 801 <indexterm><primary>LDAP queries</primary></indexterm>
 802 <indexterm><primary>passdb backend</primary></indexterm>
 803 <indexterm><primary>ldap suffix</primary></indexterm>
 804 <indexterm><primary>ldap user suffix</primary></indexterm>
 805 <indexterm><primary>ldap machine suffix</primary></indexterm>
 806 <indexterm><primary>ldap group suffix</primary></indexterm>
 807 <indexterm><primary>ldap idmap suffix</primary></indexterm>
 808                 The following new &smb.conf; parameters have been added to aid in directing
 809                 certain LDAP queries when <parameter>passdb backend = ldapsam://...</parameter> has been
 810                 specified.
 811                 </para>
 812
 813                 <itemizedlist>
 814                         <listitem><para>ldap suffix         &smbmdash; used to search for user and computer accounts.</para></listitem>
 815                         <listitem><para>ldap user suffix    &smbmdash; used to store user accounts.</para></listitem>
 816                         <listitem><para>ldap machine suffix &smbmdash; used to store machine trust accounts.</para></listitem>
 817                         <listitem><para>ldap group suffix   &smbmdash; location of posixGroup/sambaGroupMapping entries.</para></listitem>
 818                         <listitem><para>ldap idmap suffix   &smbmdash; location of sambaIdmapEntry objects.</para></listitem>
 819                 </itemizedlist>
 820
 821                 <para>
 822 <indexterm><primary>ldap suffix</primary></indexterm>
 823 <indexterm><primary>subsuffix parameters</primary></indexterm>
 824                 If an <parameter>ldap suffix</parameter> is defined, it will be appended to all of the
 825                 remaining subsuffix parameters. In this case, the order of the suffix
 826                 listings in &smb.conf; is important. Always place the <parameter>ldap suffix</parameter> first
 827                 in the list.
 828                 </para>
 829
 830                 <para>
 831                 Due to a limitation in Samba's &smb.conf; parsing, you should not surround
 832                 the domain names with quotation marks.
 833                 </para>
 834
 835                 </sect4>
 836
 837                 <sect4>
 838                 <title>IdMap LDAP Support</title>
 839
 840                 <para>
 841 <indexterm><primary>idmap backend</primary></indexterm>
 842                 Samba-3 supports an LDAP backend for the idmap subsystem. The
 843                 following options inform Samba that the idmap table should be
 844                 stored on the directory server <emphasis>onterose</emphasis> in the ou=Idmap,dc=quenya,dc=org partition.
 845                 </para>
 846
 847                 <smbconfblock>
 848                 <smbconfsection name="[global]"/>
 849                 <member>...</member>
 850                 <smbconfoption name="idmap backend">ldap:ldap://onterose/</smbconfoption>
 851                 <smbconfoption name="ldap idmap suffix">ou=Idmap</smbconfoption>
 852                 <smbconfoption name="idmap uid">40000-50000</smbconfoption>
 853                 <smbconfoption name="idmap gid">40000-50000</smbconfoption>
 854                 </smbconfblock>
 855
 856                 <para>
 857 <indexterm><primary>NFS</primary></indexterm>
 858                 This configuration allows Winbind installations on multiple servers to
 859                 share a UID/GID number space, thus avoiding the interoperability problems
 860                 with NFS that were present in Samba-2.2.
 861                 </para>
 862
 863                 </sect4>
 864
 865                 </sect3>
 866
 867         </sect2>
 868
 869 </sect1>
 870
 871 </chapter>