Release Announcements
=====================
-This is the first preview release of Samba 4.8. This is *not*
+This is the first preview release of Samba 4.10. This is *not*
intended for production environments and is designed for testing
purposes only. Please report any defects via the Samba bug reporting
system at https://bugzilla.samba.org/.
-Samba 4.8 will be the next version of the Samba suite.
+Samba 4.10 will be the next version of the Samba suite.
UPGRADING
NEW FEATURES/CHANGES
====================
-KDC GPO application
--------------------
+GPO Improvements
+----------------
-Adds Group Policy support for the samba kdc. Applies password policies
-(minimum/maximum password age, minimum password length, and password
-complexity) and kerberos policies (user/service ticket lifetime and
-renew lifetime).
+A new 'samba-tool gpo export' command has been added that can export a
+set of Group Policy Objects from a domain in a generalised XML format.
-Adds the samba_gpoupdate script for applying and unapplying
-policy. Can be applied automatically by setting
+A corresponding 'samba-tool gpo restore' command has been added to
+rebuild the Group Policy Objects from the XML after generalization.
+(The administrator needs to correct the values of XML entities between
+the backup and restore to account for the change in domain).
- 'server services = +gpoupdate'.
+kdc prefork
+-----------
-smb.conf changes
-================
+The KDC now supports the pre-fork process model and worker processes will be
+forked for the KDC when the pre-fork process model is selected for samba.
+
+prefork 'prefork children'
+--------------------------
+
+The default value for this smdb.conf parameter has been increased from 1 to
+4.
+
+netlogon prefork
+----------------
+
+DCERPC now supports pre-forked NETLOGON processes. The netlogon processes are
+pre-forked when the prefork process model is selected for samba.
+
+Offline domain backups
+----------------------
+
+The 'samba-tool domain backup' command has been extended with a new 'offline'
+option. This safely creates a backup of the local DC's database directly from
+disk. The main benefits of an offline backup are it's quicker, it stores more
+database details (for forensic purposes), and the samba process does not have
+to be running when the backup is made. Refer to the samba-tool help for more
+details on using this command.
+
+Group membership statistics
+---------------------------
- Parameter Name Description Default
- -------------- ----------- -------
- binddns dir New
- gpo update command New
- oplock contention limit Removed
- prefork children New 1
+A new 'samba-tool group stats' command has been added. This provides summary
+information about how the users are spread across groups in your domain.
+The 'samba-tool group list --verbose' command has also been updated to include
+the number of users in each group.
+prefork process restart
+-----------------------
-NT4-style replication based net commands removed
-================================================
+The pre-fork process model now restarts failed processes. The delay between
+restart attempts is controlled by the "prefork backoff increment" (default = 10)
+and "prefork maximum backoff" (default = 120) smbd.conf parameters. A linear
+back off strategy is used with "prefork backoff increment" added to the
+delay between restart attempts up until it reaches "prefork maximum backoff".
-The following commands and sub-commands have been removed from the
-"net" utility:
+Using the default sequence the restart delays (in seconds) are:
+ 0, 10, 20, ..., 120, 120, ...
-net rpc samdump
-net rpc vampire ldif
+standard process model
+----------------------
-Also, replicating from a real NT4 domain with "net rpc vampire" and
-"net rpc vampire keytab" has been removed.
+When using the standard process model samba forks a new process to handle ldap
+and netlogon connections. Samba now honours the 'max smbd processes' smb.conf
+parameter. The default value of 0, indicates there is no limit. The limit
+is applied individually to netlogon and ldap. When the process limit is
+exceeded Samba drops new connections immediately.
-The NT4-based commands were accidentially broken in 2013, and nobody
-noticed the breakage. So instead of fixing them including tests (which
-would have meant writing a server for the protocols, which we don't
-have) we decided to remove them.
+python3 support
+---------------
-For the same reason, the "samsync", "samdeltas" and "database_redo"
-commands have been removed from rpcclient.
+The version of python which is now the default for samba is python3.
+'configure' & 'make' will execute using python3. It is possible to still
+specify an additional python version with '--extra-python'
+e.g. '--extra-python=/usr/bin/python2'. It should be noted that support for
+this option will be deprecated in a future release.
-"net rpc vampire keytab" from Active Directory domains continues to be
-supported.
+What if I need to build with python2? To build with python2 you *must* set
+the 'PYTHON' environent variable to override the python3 default for both
+'configure' and 'make' steps.
-vfs_aio_linux module removed
-============================
+ 'PYTHON=python2 ./configure.developer'
+&
+ 'PYTHON=python2 make'
-The current Linux kernel aio does not match what Samba would
-do. Shipping code that uses it leads people to false
-assumptions. Samba implements async I/O based on threads by default,
-there is no special module required to see benefits of read and write
-request being sent do the disk in parallel.
+Note: Support for python2 (with the exception of a build configured with
+ 'PYTHON=python2 ./configure --disable-python' and built with
+ 'PYTHON=python2 make' will be deprecated in the next release.
-smbclient reparse point symlink parameters reversed
-===================================================
+REMOVED FEATURES
+================
+
+MIT Kerberos build of the AD DC
+-------------------------------
+
+While not removed, the MIT Kerberos build of the Samba AD DC is still
+considered experimental. Because Samba will not issue security
+patches for this configuration, such builds now require the explicit
+configure option: --with-experimental-mit-ad-dc
+
+For further details see
+https://wiki.samba.org/index.php/Running_a_Samba_AD_DC_with_MIT_Kerberos_KDC
+
+samba_backup
+------------
+
+The samba_backup script has been removed. This has now been replaced by the
+'samba-tool domain backup offline' command.
+
+smb.conf changes
+================
-A bug in smbclient caused the 'symlink' command to reverse the
-meaning of the new name and link target parameters when creating a
-reparse point symlink against a Windows server. As this is a
-little used feature the ordering of these parameters has been
-reversed to match the parameter ordering of the UNIX extensions
-'symlink' command. The usage message for this command has also
-been improved to remove confusion.
+ Parameter Name Description Default
+ -------------- ----------- -------
+ prefork backoff increment Delay added to process restart 10 (seconds)
+ between attempts.
+ prefork maximum backoff Maximum delay for process between 120 (seconds)
+ process restart attempts
+ smbd search ask sharemode Name changed, old name was
+ "smbd:search ask sharemode"
+ smbd async dosmode Name changed, old name was
+ "smbd:async dosmode"
+ smbd max async dosmode Name changed, old name was
+ "smbd:max async dosmode"
+ smbd getinfo ask sharemode New: similar to "smbd search ask yes
+ sharemode" but for SMB getinfo
KNOWN ISSUES
============
-https://wiki.samba.org/index.php/Release_Planning_for_Samba_4.8#Release_blocking_bugs
+https://wiki.samba.org/index.php/Release_Planning_for_Samba_4.10#Release_blocking_bugs
#######################################
git.samba.org / samba.git / blobdiff