Install Erlang

• from source

  1. Install Libncurses development files

     • with Debian APT

       apt-get install libncurses5-dev

  2. Install OpenSSL and its development files

     • with Debian APT

       apt-get install openssl libssl-dev

  3. Install Erlang

     Download Erlang/OTP source code and uncompress it. For example:

     wget http://www.erlang.org/download/otp_src_R11B-5.tar.gz
     tar -xzvf otp_src_R11B-5.tar.gz
     cd otp_src_R11B-5
     LANG=C; export LANG

     Compile and install it:

     ./configure
     make
     make install

• with Debian APT

  apt-get install erlang

• using Port Collection on FreeBSD

  cd /usr/ports/lang/erlang-lite && make all install clean

Verify Installation

Check if it is correctly installed:

erl
Erlang (BEAM) emulator version 5.5.5 [source] [hipe]


Eshell V5.5.5  (abort with ^G)
1> halt().

Install ejabberd

• from source SVN

  1. Install Libexpatl development files

     • with Debian APT

       apt-get install libexpat1-dev

  2. Retrieve ejabberd from the Subversion repository

     svn co http://svn.process-one.net/ejabberd/trunk ejabberd

  3. Compile

     cd ejabberd/src
     ./configure
     make

  4. Configure

     You can use the example configuration file:

     cp ejabberd.cfg.example ejabberd.cfg

     You should add a user to your system:

     addgroup jabber
     adduser ejabberd
     adduser ejabberd jabber
     chown ejabberd:jabber ../src -R
     chmod 750 ../src -R

  5. Execute

     Command to execute ejabberd:

     su ejabberd -c "erl -s ejabberd -name ejabberd 
                                    -ejabberd config '\"ejabberd.cfg\"' -detached"

     You can use a script.

• using apt on Debian unstable and testing

  It is as easy as:

  apt-get install ejabberd

• using apt on Debian stable

  Add Teopetuk's unofficial Debian APT repository if you do not have it. Then update the list of available packages and finally install it:

  apt-get install ejabberd

• using Port Collection on FreeBSD

  cd /usr/ports/net-im/ejabberd && make all install clean

Enable SSL/TLS Secured Communication

Create a SSL key (read this tutorial for more information):

openssl req -new -x509 -newkey rsa:1024 -days 3650 -keyout privkey.pem -out server.pem
openssl rsa -in privkey.pem -out privkey.pem
cat privkey.pem >> server.pem
rm privkey.pem

Now edit your ejabberd.cfg file and specify the correct location of your server.pem:

{listen, [{5222, ejabberd_c2s,     [{access, c2s}, {shaper, c2s_shaper},
                                    starttls, {certfile, "/home/ejabberd/server.pem"}]},
          {5223, ejabberd_c2s,     [{access, c2s}, {shaper, c2s_shaper},
                                    tls, {certfile, "/home/ejabberd/server.pem"}]},
          ...
]}.

{s2s_use_starttls, true}.
{s2s_certfile, "/home/ejabberd/server.pem"}.