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tridge@samba.org, December 2004
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A more up to date version of this howto can be found in the wiki
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at http://wiki.samba.org/index.php/Samba4/HOWTO.
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This is a very basic document on how to setup a simple Samba4
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server. This is aimed at developers who are already familiar with
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Samba3 and wish to participate in Samba4 development. This is not
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aimed at production use of Samba4.
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Step 1: download Samba4
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-----------------------
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If you have downloaded the Samba4 code via a tarball released from the
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samba.org website, Step 1 has already been completed for you. For testing
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with the version released in the tarball, you may continue on to Step 2. Note
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that the references below to the top-level directory named "samba4" will
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instead be based on the name of the tarball downloaded (e.g.
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"samba-4.0.0alpha3" for the tarball samba-4.0.0alpha3.tar.gz).
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There are 2 methods of doing this:
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method 1: "rsync -avz samba.org::ftp/unpacked/samba_4_0_test/ samba4"
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method 2: "git clone git://git.samba.org/samba.git samba4; cd samba4 && git checkout -b v4-0-test origin/v4-0-test; cd .."
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both methods will create a directory called "samba4" in the current
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directory. If you don't have rsync or git then install one of them.
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Since only released versions of Samba contain a pregenerated configure script,
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you will have to generate it by hand::
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Note that the above rsync command will give you a checked out git
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repository. So if you also have git you can update it to the latest
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version at some future date using::
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$ git pull origin v4-0-test
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Step 2: compile Samba4
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----------------------
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Recommended optional development libraries:
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- acl and xattr development libraries
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Step 3: install Samba4
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----------------------
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Run this as a user who have permission to write to the install
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directory (defaults to /usr/local/samba). Use --prefix option to
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configure above to change this.
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Step 4: provision Samba4
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------------------------
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The "provision" step sets up a basic user database.
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Must be run as a user with permission to write to the install directory.
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# ./setup/provision --realm=YOUR.REALM --domain=YOURDOM \
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# --adminpass=SOMEPASSWORD --server-role='domain controller'
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'YOURDOM' is the NT4 style domain name. 'YOUR.REALM' is your kerberos
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realm, which is typically your DNS domain name.
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Step 5: Create a simple smb.conf
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--------------------------------
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The provisioning will create a very simple smb.conf with no shares by
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default. You will need to update it to add at least one share. For
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Step 6: starting Samba4
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-----------------------
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The simplest is to just run "smbd", but as a developer you may find
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the following more useful::
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that means "start smbd without messages in stdout, and running a
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single process. That mode of operation makes debugging smbd with gdb
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Note that now it is no longer necessary to have an instance of nmbd
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from Samba 3 running. If you are running any smbd or nmbd processes
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they need to be stopped before starting smbd from Samba 4.
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Make sure you put the bin and sbin directories from your new install
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in your $PATH. Make sure you run the right version!
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Step 7: testing Samba4
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----------------------
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$ smbclient //localhost/test -Uadministrator%SOMEPASSWORD
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NOTE about filesystem support
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-----------------------------
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To use the advanced features of Samba4 you need a filesystem that
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supports both the "user" and "system" xattr namespaces.
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If you run Linux with a 2.6 kernel and ext3 this means you need to
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include the option "user_xattr" in your /etc/fstab. For example::
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/dev/hda3 /home ext3 user_xattr 1 1
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You also need to compile your kernel with the XATTR and SECURITY
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options for your filesystem. For ext3 that means you need::
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CONFIG_EXT3_FS_XATTR=y
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CONFIG_EXT3_FS_SECURITY=y
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If you are running a Linux 2.6 kernel with CONFIG_IKCONFIG_PROC
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defined you can check this with the following command::
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$ zgrep CONFIG_EXT3_FS /proc/config.gz
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If you don't have a filesystem with xattr support, then you can
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simulate it by using the option::
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posix:eadb = /usr/local/samba/eadb.tdb
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that will place all extra file attributes (NT ACLs, DOS EAs, streams
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etc), in that tdb. It is not efficient, and doesn't scale well, but at
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least it gives you a choice when you don't have a modern filesystem.
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Testing your filesystem
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-----------------------
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To test your filesystem support, install the 'attr' package and run
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the following 4 commands as root::
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# setfattr -n user.test -v test test.txt
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# setfattr -n security.test -v test2 test.txt
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# getfattr -d test.txt
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# getfattr -n security.test -d test.txt
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You should see output like this::
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security.test="test2"
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If you get any "Operation not supported" errors then it means your
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kernel is not configured correctly, or your filesystem is not mounted
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with the right options.
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If you get any "Operation not permitted" errors then it probably means
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you didn't try the test as root.