Release Announcements
=====================
-This is the first preview release of Samba 4.9. 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 4.9 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
====================
+GPO Improvements
+----------------
-net ads setspn
----------------
+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).
-There is a new 'net ads setspn' sub command for managing Windows SPN(s)
-on the AD. This command aims to give the basic functionaility that is
-provided on windows by 'setspn.exe' e.g. ability to add, delete and list
-Windows SPN(s) stored in a Windows AD Computer object.
+kdc prefork
+-----------
-The format of the command is:
+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.
-net ads setspn list [machine]
-net ads setspn [add | delete ] SPN [machine]
+prefork 'prefork children'
+--------------------------
-'machine' is the name of the computer account on the AD that is to be managed.
-If 'machine' is not specified the name of the 'client' running the command
-is used instead.
+The default value for this smdb.conf parameter has been increased from 1 to
+4.
-The format of a Windows SPN is
- 'serviceclass/host:port/servicename' (servicename and port are optional)
+netlogon prefork
+----------------
-serviceclass/host is generally sufficient to specify a host based service.
+DCERPC now supports pre-forked NETLOGON processes. The netlogon processes are
+pre-forked when the prefork process model is selected for samba.
-net ads keytab changes
+Offline domain backups
----------------------
-net ads keytab add no longer attempts to convert the passed serviceclass
-(e.g. nfs, html etc.) into a Windows SPN which is added to the Windows AD
-computer object. By default just the keytab file is modified.
-A new keytab subcommand 'add_update_ads' has been added to preserve the
-legacy behaviour. However the new 'net ads setspn add' subcommand should
-really be used instead.
+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.
-net ads keytab create no longer tries to generate SPN(s) from existing
-entries in a keytab file. If it is required to add Windows SPN(s) then
-'net ads setspn add' should be used instead.
+Group membership statistics
+---------------------------
-REMOVED FEATURES
-================
+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".
-smb.conf changes
+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.
+
+JSON logging
+------------
+
+Authentication messages now contain the Windows Event Id "eventId" and logon
+type "logonType". The supported event codes and logon types are:
+ Event codes:
+ 4624 Successful logon
+ 4625 Unsuccessful logon
+
+ Logon Types:
+ 2 Interactive
+ 3 Network
+ 8 NetworkCleartext
+The version number for Authentication messages is now 1.1, changed from 1.0
+
+Password change messages now contain the Windows Event Id "eventId", the
+supported event Id's are:
+ 4723 Password changed
+ 4724 Password reset
+The version number for PasswordChange messages is now 1.1, changed from 1.0
+
+The leading "JSON <message type>:" and source file prefix of the JSON formatted
+log entries has been removed to make the parsing of the JSON log messages
+easier. JSON log entries now start with 2 spaces folowed by an opening brace
+i.e. " {"
+
+
+
+
+REMOVED FEATURES
================
-As the most popular Samba install platforms (Linux and FreeBSD) both
-support extended attributes by default, the parameters "map readonly",
-"store dos attributes" and "ea support" have had their defaults changed
-to allow better Windows fileserver compatibility in a default install.
+MIT Kerberos build of the AD DC
+-------------------------------
- Parameter Name Description Default
- -------------- ----------- -------
- map readonly Default changed no
- store dos attributes Default changed yes
- ea support Default changed yes
+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
-VFS interface changes
-=====================
+For further details see
+https://wiki.samba.org/index.php/Running_a_Samba_AD_DC_with_MIT_Kerberos_KDC
-The VFS ABI interface version has changed to 39. Function changes
-are:
+samba_backup
+------------
-SMB_VFS_FSYNC: Removed: Only async versions are used.
-SMB_VFS_READ: Removed: Only PREAD or async versions are used.
-SMB_VFS_WRITE: Removed: Only PWRITE or async versions are used.
-SMB_VFS_CHMOD_ACL: Removed: Only CHMOD is used.
-SMB_VFS_FCHMOD_ACL: Removed: Only FCHMOD is used.
+The samba_backup script has been removed. This has now been replaced by the
+'samba-tool domain backup offline' command.
+
+smb.conf changes
+================
-Any external VFS modules will need to be updated to match these
-changes in order to work with 4.9.x.
+ 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_4.9#Release_blocking_bugs
+https://wiki.samba.org/index.php/Release_Planning_for_Samba_4.10#Release_blocking_bugs
#######################################