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
--------------------
-
-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).
-
-Adds the samba_gpoupdate script for applying and unapplying
-policy. Can be applied automatically by setting
-
- 'server services = +gpoupdate'.
-
-Time Machine Support with vfs_fruit
-===================================
-Samba can be configured as a Time Machine target for Apple Mac devices
-through the vfs_fruit module. When enabling a share for Time Machine
-support the relevant Avahi records to support discovery will be published
-for installations that have been built against the Avahi client library.
-
-Shares can be designated as a Time Machine share with the following setting:
-
- 'fruit:time machine = yes'
-
-Support for lower casing the MDNS Name
-======================================
-Allows the server name that is advertised through MDNS to be set to the
-hostname rather than the Samba NETBIOS name. This allows an administrator
-to make Samba registered MDNS records match the case of the hostname
-rather than being in all capitals.
-
-This can be set with the following settings:
-
- 'mdns name = mdns'
-
-Encrypted secrets
-=================
-Attributes deemed to be sensitive are now encrypted on disk. The sensitive
-values are currently:
- pekList
- msDS-ExecuteScriptPassword
- currentValue
- dBCSPwd
- initialAuthIncoming
- initialAuthOutgoing
- lmPwdHistory
- ntPwdHistory
- priorValue
- supplementalCredentials
- trustAuthIncoming
- trustAuthOutgoing
- unicodePwd
- clearTextPassword
-
-This encryption is enabled by default on a new provision or join, it
-can be disabled at provision or join time with the new option
---plaintext-secrets.
-
-However, an in-place upgrade will not encrypt the database.
-
-Once encrypted, it is not possible to do an in-place downgrade (eg to
-4.7) of the database. To obtain an unencrypted copy of the database a
-new DC join should be performed, specifying the --plaintext-secrets
-option.
-
-The key file "encrypted_secrets.key" is created in the same directory
-as the database and should NEVER be disclosed. It is included by the
-samba_backup script.
+GPO Improvements
+----------------
-smb.conf changes
-================
+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
+---------------------------
- Parameter Name Description Default
- -------------- ----------- -------
- auth methods Removed
- binddns dir New
- client schannel Default changed/ yes
- Deprecated
- gpo update command New
- map untrusted to domain Removed
- oplock contention limit Removed
- prefork children New 1
- mdns name Added netbios
- fruit:time machine Added false
- profile acls Removed
- use spnego Removed
- server schannel Default changed/ yes
- Deprecated
- winbind trusted domains only Removed
-
-
-NT4-style replication based net commands removed
-================================================
-
-The following commands and sub-commands have been removed from the
-"net" utility:
-
-net rpc samdump
-net rpc vampire ldif
-
-Also, replicating from a real NT4 domain with "net rpc vampire" and
-"net rpc vampire keytab" has been removed.
-
-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.
-
-For the same reason, the "samsync", "samdeltas" and "database_redo"
-commands have been removed from rpcclient.
-
-"net rpc vampire keytab" from Active Directory domains continues to be
-supported.
-
-vfs_aio_linux module removed
-============================
-
-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.
-
-smbclient reparse point symlink parameters reversed
-===================================================
-
-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.
+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.
REMOVED FEATURES
================
-The two commands "net serverid list" and "net serverid wipe" have been
-removed, because the file serverid.tdb is not used anymore.
+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
-"net serverid list" can be replaced by listing all files in the
-subdirectory "msg.lock" of Samba's "lock directory". The unique id
-listed by "net serverid list" is stored in every process' lockfile in
-"msg.lock".
+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
+================
-"net serverid wipe" is not necessary anymore. It was meant primarily
-for clustered environments, where the serverid.tdb file was not
-properly cleaned up after single node crashes. Nowadays smbd and
-winbind take care of cleaning up the msg.lock and msg.sock directories
-automatically.
+ 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