Release Announcements
=====================
-This is the first preview release of Samba 4.10. This is *not*
+This is the first preview release of Samba 4.11. 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 4.10 will be the next version of the Samba suite.
+Samba 4.11 will be the next version of the Samba suite.
UPGRADING
NEW FEATURES/CHANGES
====================
-GPO Improvements
-----------------
-
-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.
-
-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).
-
-kdc prefork
------------
-
-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
+Default samba process model
---------------------------
-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
------------------------
-
-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".
-
-Using the default sequence the restart delays (in seconds) are:
- 0, 10, 20, ..., 120, 120, ...
-
-standard process model
-----------------------
-
-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.
-
-python3 support
----------------
-
-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.
-
-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.
-
- 'PYTHON=python2 ./configure.developer'
-&
- 'PYTHON=python2 make'
-
-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.
+The default for the --model argument passed to the samba executable has changed
+from 'standard' to 'prefork'. This means a difference in the number of samba
+child processes that are created to handle client connections. The previous
+default would create a separate process for every LDAP or NETLOGON client
+connection. For a network with a lot of persistent client connections, this
+could result in significant memory overhead. Now, with the new default of
+'prefork', the LDAP, NETLOGON, and KDC services will create a fixed number of
+worker processes at startup and share the client connections amongst these
+workers. The number of worker processes can be configured by the 'prefork
+children' setting in the smb.conf (the default is 4).
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
================
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_4.10#Release_blocking_bugs
+https://wiki.samba.org/index.php/Release_Planning_for_Samba_4.11#Release_blocking_bugs
#######################################
git.samba.org / kai / samba-autobuild / .git / blobdiff