[Announce] Samba 4.8.0rc3 Available for Download
Karolin Seeger
kseeger at samba.org
Mon Feb 12 10:48:55 UTC 2018
Release Announcements
=====================
This is the third release candidate of Samba 4.8. 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.
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
'apply group policies = yes'.
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.
Active Directory replication visualisation
------------------------------------------
To work out what is happening in a replication graph, it is sometimes
helpful to use visualisations. We introduce a samba-tool subcommand to
write Graphviz dot output and generate text-based heatmaps of the
distance in hops between DCs.
There are two subcommands, two graphical modes, and (roughly) two modes of
operation with respect to the location of authority.
`samba-tool visualize ntdsconn` looks at NTDS Connections.
`samba-tool visualize reps` looks at repsTo and repsFrom objects.
In '--distance' mode (default), the distances between DCs are shown in
a matrix in the terminal. With '--color=yes', this is depicted as a
heatmap. With '--utf8' it is a lttle prettier.
In '--dot' mode, Graphviz dot output is generated. When viewed using
dot or xdot, this shows the network as a graph with DCs as vertices
and connections edges. Certain types of degenerate edges are shown in
different colours or line-styles.
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.
Winbind changes
---------------
The dependency to global list of trusted domains within
the winbindd processes has been reduced a lot.
The construction of that global list is not reliable and often
incomplete in complex trust setups. In most situations the list is not needed
any more for winbindd to operate correctly. E.g. for plain file serving via SMB
using a simple idmap setup with autorid, tdb or ad. However some more complex
setups require the list, e.g. if you specify idmap backends for specific
domains. Some pam_winbind setups may also require the global list.
If you have a setup that doesn't require the global list, you should set
"winbind scan trusted domains = no".
VirusFilter VFS module
----------------------
This new module integrates with Sophos, F-Secure and ClamAV anti-virus
software to provide scanning and filtering of files on a Samba share.
REMOVED FEATURES
================
The two commands 'net serverid list' and 'net serverid wipe' have been
removed, because the file serverid.tdb is not used anymore.
'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".
'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.
smb.conf changes
================
Parameter Name Description Default
-------------- ----------- -------
apply group policies New no
auth methods Removed
binddns dir New
client schannel Default changed/ yes
Deprecated
gpo update command New
ldap ssl ads Deprecated
map untrusted to domain Removed
oplock contention limit Removed
prefork children New 1
mdns name New netbios
fruit:time machine New false
profile acls Removed
use spnego Removed
server schannel Default changed/ yes
Deprecated
unicode Deprecated
winbind scan trusted domains New yes
winbind trusted domains only Removed
CHANGES SINCE 4.8.0rc2
======================
o Trever L. Adams <trever.adams at gmail.com>
* BUG 13246: Backport Samba VirusFilter.
o Ralph Boehme <slow at samba.org>
* BUG 13228: dbcheck: Add support for restoring missing forward links.
o Günther Deschner <gd at samba.org>
* BUG 13221: python: fix the build with python3.
o Stefan Metzmacher <metze at samba.org>
* BUG 13228: dbcheck: Add support for restoring missing forward links.
CHANGES SINCE 4.8.0rc1
======================
o Günther Deschner <gd at samba.org>
* BUG 13227: packaging: Fix default systemd-dir path.
* BUG 13238: build: Deal with recent glibc sunrpc header removal.
o Stefan Metzmacher <metze at samba.org>
* BUG 13228: repl_meta_data: fix linked attribute corruption on databases
with unsorted links on expunge.
o Christof Schmitt <cs at samba.org>
* BUG 13217: s3/smbd: Remove file system sharemode before calling unlink.
o Andreas Schneider <asn at samba.org>
* BUG 13209: Small improvements in winbindd for the resource cleanup in error
cases.
* BUG 13238: Make Samba work with tirpc and libnsl2.
KNOWN ISSUES
============
https://wiki.samba.org/index.php/Release_Planning_for_Samba_4.8#Release_blocking_bugs
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
================
Download Details
================
The uncompressed tarballs and patch files have been signed
using GnuPG (ID 6F33915B6568B7EA). The source code can be downloaded
from:
https://download.samba.org/pub/samba/rc/
The release notes are available online at:
https://download.samba.org/pub/samba/rc/samba-4.8.0rc3.WHATSNEW.txt
Our Code, Our Bugs, Our Responsibility.
(https://bugzilla.samba.org/)
--Enjoy
The Samba Team
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