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[335]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>
13This chapter provides a detailed record of changes made during the 3.x series releases. At this time this
14series consists of the 3.0.x series that is under the GNU GPL version 2 license, and the Samba 3.2.x series
15that 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>
21Samba is a fluid product in which there may be significant changes between releases. Some of these changes are
22brought about as a result of changes in the protocols that are used by Microsoft Windows network clients as a
23result of security or functionality updates through official Microsoft patches and updates. Samba must track
24such changes, particularly where they affect the internal operation of Samba itself.
25</para>
26
27<para>
28Please refer to any notes below that make explicit mention of the version of Samba you are using. In general,
29all changes that apply to a new release will apply to follow-on releases also. For example, changes to Samba
303.0.23 affect all releases up to an including 3.0.25 and later. Samba 3.2.x was originaly cut from Samba
313.0.25 before 3.2.0-specific changes were applied. Unless a 3.0.x series feature is specifically revoked, the
32behavior 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>
47This chapter deals exclusively with the differences between Samba-3.0.25 and Samba-2.2.8a.
48It points out where configuration parameters have changed, and provides a simple guide for
49the 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>
57Samba-3.0.25 default behavior should be approximately the same as Samba-2.2.x.
58The default behavior when the new parameter <smbconfoption name="passdb backend"/>
59is not defined in the &smb.conf; file provides the same default behavior as Samba-2.2.x
60with <smbconfoption name="encrypt passwords">Yes</smbconfoption> and
61will 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>
67So why say that <emphasis>behavior should be approximately the same as Samba-2.2.x</emphasis>? Because
68Samba-3.0.25 can negotiate new protocols, such as support for native Unicode, that may result in
69differing protocol code paths being taken. The new behavior under such circumstances is not
70exactly the same as the old one. The good news is that the domain and machine SIDs will be
71preserved 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>
79If the Samba-2.2.x system is using an LDAP backend, and there is no time to update the LDAP
80database, then make sure that <smbconfoption name="passdb backend">ldapsam_compat</smbconfoption>
81is specified in the &smb.conf; file. For the rest, behavior should remain more or less the same.
82At a later date, when there is time to implement a new Samba-3-compatible LDAP backend, it is possible
83to migrate the old LDAP database to the new one through use of the <command>pdbedit</command>.
84See <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>
105The 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>
206Plus lots of other improvements!
207</para>
208
209
210<sect3>
211<title>Configuration Parameter Changes</title>
212
213<para>
214This section contains a brief listing of changes to &smb.conf; options since the Samba-2.2.x series up to and
215including Samba-3.0.25.
216</para>
217
218<para>
219Please refer to the smb.conf(5) man page for complete descriptions of new or modified
220parameters.
221</para>
222
223<para>
224Whenever 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
226be obtain on-line from the Samba <ulink url="http://www.samba.org/samba/">web site</ulink>, in
227the 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>
237In 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>
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