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[Samba.git] / docs / docbook / projdoc / UNIX_INSTALL.sgml

<chapter id="install">

<title>How to Install and Test SAMBA</title>

<sect1>
        <title>Step 0: Read the man pages</title>
        
        <para>The man pages distributed with SAMBA contain 
        lots of useful info that will help to get you started. 
        If you don't know how to read man pages then try 
        something like:</para>

        <para><prompt>$ </prompt><userinput>nroff -man smbd.8 | more
        </userinput></para>
        
        <para>Other sources of information are pointed to 
        by the Samba web site,<ulink url="http://www.samba.org/">
        http://www.samba.org</ulink></para>
</sect1>

<sect1>
        <title>Step 1: Building the Binaries</title>
        
        <para>To do this, first run the program <command>./configure
        </command> in the source directory. This should automatically 
        configure Samba for your operating system. If you have unusual 
        needs then you may wish to run</para>
        
        <para><prompt>root# </prompt><userinput>./configure --help
        </userinput></para>
        
        <para>first to see what special options you can enable.
        Then executing</para>
        
        <para><prompt>root# </prompt><userinput>make</userinput></para>
        
        <para>will create the binaries. Once it's successfully 
        compiled you can use </para>
        
        <para><prompt>root# </prompt><userinput>make install</userinput></para>
        
        <para>to install the binaries and manual pages. You can 
        separately install the binaries and/or man pages using</para>
        
        <para><prompt>root# </prompt><userinput>make installbin
        </userinput></para>
        
        <para>and</para>
        
        <para><prompt>root# </prompt><userinput>make installman
        </userinput></para>

        <para>Note that if you are upgrading for a previous version 
        of Samba you might like to know that the old versions of 
        the binaries will be renamed with a ".old" extension. You 
        can go back to the previous version with</para>
        
        <para><prompt>root# </prompt><userinput>make revert
        </userinput></para>
        
        <para>if you find this version a disaster!</para>
</sect1>

<sect1>
        <title>Step 2: The all important step</title>
        
        <para>At this stage you must fetch yourself a 
        coffee or other drink you find stimulating. Getting the rest 
        of the install right can sometimes be tricky, so you will 
        probably need it.</para>

        <para>If you have installed samba before then you can skip 
        this step.</para>
</sect1>

<sect1>
        <title>Step 3: Create the smb configuration file. </title>

        <para>There are sample configuration files in the examples 
        subdirectory in the distribution. I suggest you read them 
        carefully so you can see how the options go together in 
        practice. See the man page for all the options.</para>

        <para>The simplest useful configuration file would be 
        something like this:</para>

        <para><programlisting>
        [global]
           workgroup = MYGROUP

           [homes]
              guest ok = no
              read only = no
        </programlisting</para>
        
        <para>which would allow connections by anyone with an 
        account on the server, using either their login name or 
        "homes" as the service name. (Note that I also set the 
        workgroup that Samba is part of. See BROWSING.txt for details)</para>
        
        <para>Note that <command>make install</command> will not install 
        a <filename>smb.conf</filename> file. You need to create it 
        yourself. </para>
        
        <para>Make sure you put the smb.conf file in the same place 
        you specified in the<filename>Makefile</filename> (the default is to 
        look for it in <filename>/usr/local/samba/lib/</filename>).</para>

        <para>For more information about security settings for the 
        [homes] share please refer to the document UNIX_SECURITY.txt.</para>
</sect1>

<sect1>
        <title>Step 4: Test your config file with 
        <command>testparm</command></title>

        <para>It's important that you test the validity of your
        <filename>smb.conf</filename> file using the testparm program. 
        If testparm runs OK then it will list the loaded services. If 
        not it will give an error message.</para>

        <para>Make sure it runs OK and that the services look 
        reasonable before proceeding. </para>

</sect1>

<sect1>
        <title>Step 5: Starting the smbd and nmbd</title>

        <para>You must choose to start smbd and nmbd either
        as daemons or from <command>inetd</command>. Don't try
        to do both!  Either you can put them in <filename>
        inetd.conf</filename> and have them started on demand
        by <command>inetd</command>, or you can start them as
        daemons either from the command line or in <filename>
        /etc/rc.local</filename>. See the man pages for details
        on the command line options. Take particular care to read
        the bit about what user you need to be in order to start
        Samba.  In many cases you must be root.</para>

        <para>The main advantage of starting <command>smbd</command>
        and <command>nmbd</command> using the recommended daemon method
        is that they will respond slightly more quickly to an initial connection
        request.</para>

        <sect2>
                <title>Step 5a: Starting from inetd.conf</title>

                <para>NOTE; The following will be different if 
                you use NIS or NIS+ to distributed services maps.</para>
                
                <para>Look at your <filename>/etc/services</filename>. 
                What is defined at port 139/tcp. If nothing is defined 
                then add a line like this:</para>

                <para><userinput>netbios-ssn     139/tcp</userinput></para>

                <para>similarly for 137/udp you should have an entry like:</para>

                <para><userinput>netbios-ns     137/udp</userinput></para>

                <para>Next edit your <filename>/etc/inetd.conf</filename> 
                and add two lines something like this:</para>

                <para><programlisting>
                netbios-ssn stream tcp nowait root /usr/local/samba/bin/smbd smbd 
                netbios-ns dgram udp wait root /usr/local/samba/bin/nmbd nmbd 
                </programlisting></para>

                <para>The exact syntax of <filename>/etc/inetd.conf</filename> 
                varies between unixes. Look at the other entries in inetd.conf 
                for a guide.</para>

                <para>NOTE: Some unixes already have entries like netbios_ns 
                (note the underscore) in <filename>/etc/services</filename>. 
                You must either edit <filename>/etc/services</filename> or
                <filename>/etc/inetd.conf</filename> to make them consistent.</para>

                <para>NOTE: On many systems you may need to use the 
                "interfaces" option in smb.conf to specify the IP address 
                and netmask of your interfaces. Run <command>ifconfig</command> 
                as root if you don't know what the broadcast is for your
                net. <command>nmbd</command> tries to determine it at run 
                time, but fails on some unixes. See the section on "testing nmbd" 
                for a method of finding if you need to do this.</para>

                <para>!!!WARNING!!! Many unixes only accept around 5 
                parameters on the command line in <filename>inetd.conf</filename>. 
                This means you shouldn't use spaces between the options and 
                arguments, or you should use a script, and start the script 
                from <command>inetd</command>.</para>

                <para>Restart <command>inetd</command>, perhaps just send 
                it a HUP. If you have installed an earlier version of <command>
                nmbd</command> then you may need to kill nmbd as well.</para>
        </sect2>
        
        <sect2>
                <title>Step 5b. Alternative: starting it as a daemon</title>

                <para>To start the server as a daemon you should create 
                a script something like this one, perhaps calling 
                it <filename>startsmb</filename>.</para>

                <para><programlisting>
                #!/bin/sh
                /usr/local/samba/bin/smbd -D 
                /usr/local/samba/bin/nmbd -D 
                </programlisting></para>

                <para>then make it executable with <command>chmod 
                +x startsmb</command></para>

                <para>You can then run <command>startsmb</command> by 
                hand or execute it from <filename>/etc/rc.local</filename>
                </para>

                <para>To kill it send a kill signal to the processes 
                <command>nmbd</command> and <command>smbd</command>.</para>

                <para>NOTE: If you use the SVR4 style init system then 
                you may like to look at the <filename>examples/svr4-startup</filename>
                script to make Samba fit into that system.</para>
        </sect2>
</sect1>

<sect1>
        <title>Step 6: Try listing the shares available on your 
        server</title>

        <para><prompt>$ </prompt><userinput>smbclient -L 
        <replaceable>yourhostname</replaceable></userinput></para>

        <para>You should get back a list of shares available on 
        your server. If you don't then something is incorrectly setup. 
        Note that this method can also be used to see what shares 
        are available on other LanManager clients (such as WfWg).</para>

        <para>If you choose user level security then you may find 
        that Samba requests a password before it will list the shares. 
        See the <command>smbclient</command> man page for details. (you 
        can force it to list the shares without a password by
        adding the option -U% to the command line. This will not work 
        with non-Samba servers)</para>
</sect1>

<sect1>
        <title>Step 7: Try connecting with the unix client</title>
        
        <para><prompt>$ </prompt><userinput>smbclient <replaceable>
        //yourhostname/aservice</replaceable></userinput></para>
        
        <para>Typically the <replaceable>yourhostname</replaceable> 
        would be the name of the host where you installed <command>
        smbd</command>. The <replaceable>aservice</replaceable> is 
        any service you have defined in the <filename>smb.conf</filename> 
        file. Try your user name if you just have a [homes] section
        in <filename>smb.conf</filename>.</para>

        <para>For example if your unix host is bambi and your login 
        name is fred you would type:</para>

        <para><prompt>$ </prompt><userinput>smbclient //bambi/fred
        </userinput></para>
</sect1>

<sect1>
        <title>Step 8: Try connecting from a DOS, WfWg, Win9x, WinNT, 
        Win2k, OS/2, etc... client</title>
        
        <para>Try mounting disks. eg:</para>

        <para><prompt>C:\WINDOWS\> </prompt><userinput>net use d: \\servername\service
        </userinput></para>

        <para>Try printing. eg:</para>

        <para><prompt>C:\WINDOWS\> </prompt><userinput>net use lpt1:
        \\servername\spoolservice</userinput></para>

        <para><prompt>C:\WINDOWS\> </prompt><userinput>print filename
        </userinput></para>

        <para>Celebrate, or send me a bug report!</para>
</sect1>

<sect1>
        <title>What If Things Don't Work?</title>
        
        <para>If nothing works and you start to think "who wrote 
        this pile of trash" then I suggest you do step 2 again (and 
        again) till you calm down.</para>

        <para>Then you might read the file DIAGNOSIS.txt and the 
        FAQ. If you are still stuck then try the mailing list or 
        newsgroup (look in the README for details). Samba has been 
        successfully installed at thousands of sites worldwide, so maybe 
        someone else has hit your problem and has overcome it. You could 
        also use the WWW site to scan back issues of the samba-digest.</para>

        <para>When you fix the problem PLEASE send me some updates to the
        documentation (or source code) so that the next person will find it
        easier. </para>

        <sect2>
                <title>Diagnosing Problems</title>

                <para>If you have installation problems then go to 
                <filename>DIAGNOSIS.txt</filename> to try to find the 
                problem.</para>
        </sect2>
        
        <sect2>
                <title>Scope IDs</title>

                <para>By default Samba uses a blank scope ID. This means 
                all your windows boxes must also have a blank scope ID. 
                If you really want to use a non-blank scope ID then you will 
                need to use the 'netbios scope' smb.conf option.
                All your PCs will need to have the same setting for 
                this to work. I do not recommend scope IDs.</para>
        </sect2>


        <sect2>
                <title>Choosing the Protocol Level</title>

                <para>The SMB protocol has many dialects. Currently 
                Samba supports 5, called CORE, COREPLUS, LANMAN1, 
                LANMAN2 and NT1.</para>

                <para>You can choose what maximum protocol to support 
                in the <filename>smb.conf</filename> file. The default is 
                NT1 and that is the best for the vast majority of sites.</para>

                <para>In older versions of Samba you may have found it 
                necessary to use COREPLUS. The limitations that led to 
                this have mostly been fixed. It is now less likely that you 
                will want to use less than LANMAN1. The only remaining advantage 
                of COREPLUS is that for some obscure reason WfWg preserves 
                the case of passwords in this protocol, whereas under LANMAN1, 
                LANMAN2 or NT1 it uppercases all passwords before sending them,
                forcing you to use the "password level=" option in some cases.</para>

                <para>The main advantage of LANMAN2 and NT1 is support for 
                long filenames with some clients (eg: smbclient, Windows NT 
                or Win95). </para>

                <para>See the smb.conf(5) manual page for more details.</para>

                <para>Note: To support print queue reporting you may find 
                that you have to use TCP/IP as the default protocol under 
                WfWg. For some reason if you leave Netbeui as the default 
                it may break the print queue reporting on some systems. 
                It is presumably a WfWg bug.</para>
        </sect2>
        
        <sect2>
                <title>Printing from UNIX to a Client PC</title>

                <para>To use a printer that is available via a smb-based 
                server from a unix host you will need to compile the 
                smbclient program. You then need to install the script 
                "smbprint". Read the instruction in smbprint for more details.
                </para>

                <para>There is also a SYSV style script that does much 
                the same thing called smbprint.sysv. It contains instructions.</para>
        </sect2>

        <sect2>
                <title>Locking</title>

                <para>One area which sometimes causes trouble is locking.</para>

                <para>There are two types of locking which need to be 
                performed by a SMB server. The first is "record locking" 
                which allows a client to lock a range of bytes in a open file. 
                The second is the "deny modes" that are specified when a file 
                is open.</para>

                <para>Record locking semantics under Unix is very
                different from record locking under Windows. Versions
                of Samba before 2.2 have tried to use the native
                fcntl() unix system call to implement proper record
                locking between different Samba clients. This can not
                be fully correct due to several reasons. The simplest
                is the fact that a Windows client is allowed to lock a
                byte range up to 2^32 or 2^64, depending on the client
                OS. The unix locking only supports byte ranges up to
                2^31. So it is not possible to correctly satisfy a
                lock request above 2^31. There are many more
                differences, too many to be listed here.</para>

                <para>Samba 2.2 and above implements record locking
                completely independent of the underlying unix
                system. If a byte range lock that the client requests
                happens to fall into the range 0-2^31, Samba hands
                this request down to the Unix system. All other locks
                can not be seen by unix anyway.</para>

                <para>Strictly a SMB server should check for locks before 
                every read and write call on a file. Unfortunately with the 
                way fcntl() works this can be slow and may overstress the 
                rpc.lockd. It is also almost always unnecessary as clients 
                are supposed to independently make locking calls before reads 
                and writes anyway if locking is important to them. By default 
                Samba only makes locking calls when explicitly asked
                to by a client, but if you set "strict locking = yes" then it will
                make lock checking calls on every read and write. </para>

                <para>You can also disable by range locking completely 
                using "locking = no". This is useful for those shares that 
                don't support locking or don't need it (such as cdroms). In 
                this case Samba fakes the return codes of locking calls to 
                tell clients that everything is OK.</para>

                <para>The second class of locking is the "deny modes". These 
                are set by an application when it opens a file to determine 
                what types of access should be allowed simultaneously with 
                its open. A client may ask for DENY_NONE, DENY_READ, DENY_WRITE 
                or DENY_ALL. There are also special compatibility modes called 
                DENY_FCB and  DENY_DOS.</para>
        </sect2>
        
        <sect2>
                <title>Mapping Usernames</title>
        
                <para>If you have different usernames on the PCs and 
                the unix server then take a look at the "username map" option. 
                See the smb.conf man page for details.</para>
        </sect2>

</sect1>        
</chapter>