Revision as of 10:32, 2 August 2011

This page contains information about how to set up DirtSand, the "D'ni in Real-Time Server and Network Dæmon" by Zrax. It is a server compatible with the CyanWorlds.com Engine. CWE needs a server to run at all, which makes setting up DirtSand (or a compatible server) a necessary part of any CWE setup. DirtSand currently works only on Linux operating systems.

This tutorial assumes that you run the DirtSand server and the database it uses on the same machine, which will usually be the case. If you plan to use a dedicated database server, you probably know enough about Postgres and Linux do change the setup accordingly.

Git

DirtSand uses git for its source control needs. If you're already familiar with git, some of these instructions may seem obvious to you. If you're not familiar with git, it is recommended that you read through some of the excellent articles in the GitHub help area.

Dependencies

You will need to install some applications and libraries before you can build DirtSand. The package names in brackets are tested on Debian, they should be called similar on other distributions.

• GCC 4.4+ (might work with other C++0x compliant compilers, but untested) [g++]
• Postgres, server and development libraries [postgresql, libpq-dev]
• OpenSSL [libssl-dev]
• libreadline [libreadline6-dev]
• zlib [zlib1g-dev]
• git (to get the sources) [git]

Building the code

This tutorial assumes you are setting up a small server to run on your main box, for testing. It installs DirtSand into a folder called "dirtsand" in your home directory. If you plan to run DirtSand on a public server, you should create a dedicated user for the Shard, so that it is properly isolated from the rest of your system, for example with the following commands run as root:

adduser dirtsand # create user
su dirtsand # and switch to it

Run the following commands to download, compile and install dirtsand:

cd ~ # change to home directory (you can use any other folder as base directory, of course)
mkdir dirtsand && cd dirtsand
git clone git://github.com/H-uru/dirtsand.git src # download DirtSand into the src directory
cd src
mkdir build && cd build
cmake .. -DCMAKE_INSTALL_PREFIX=$HOME/dirtsand # check for installed libraries etc.
make # compile the server
make install # copies the files to $HOME/dirtsand/bin etc.

If you run into any errors about finding libraries or headers, make sure you have the *development* versions of all of the required libraries, and that they are in your path. You can also use the cmake-gui to help cmake locate the missing paths and files.

You should not continue beyond this step before completing above commands without error messages!

Setting up the server

Now the database server needs to be set up and DirtSand needs to be configure to work with it. The subsections work on the database, so you need to run them as a user that can use the "sudo" command to switch to the postgres user. If you set up DirtSand on your home machine, your main user will usually be able to do that. On a server, you probably created a "dirtsand" user (see above) which should not have that power. Open a second terminal and log in as root for the following commands.

Set up the postgres user

sudo -u postgres psql

will open a postgres shell that you can type commands into. The following commands will create a user to be used by DirtSand (replace "<password>" by some random series of characters):

CREATE USER dirtsand WITH PASSWORD '<password>';
CREATE DATABASE dirtsand WITH TEMPLATE = template0 ENCODING = 'UTF8';
ALTER DATABASE dirtsand OWNER TO dirtsand;
\q

Install the UUID functionality

This may be provided by your OS distribution. In Ubuntu or Debian, simply install the postgresql-contrib package to provide the necessary libraries and installation scripts. Once the package is installed, you can import the functionality into the database (you may have to adapt the version number to your distribution):

sudo -u postgres psql -d dirtsand < /usr/share/postgresql/8.4/contrib/uuid-ossp.sql

If your distribution does not provide a contrib or uuid-ossp bundle, you can get it and build it yourself from the sources provided at: http://www.ossp.org/pkg/lib/uuid/. You can then add it to the dirtsand database by running:

sudo -u postgres psql -d dirtsand < /path/to/uuid-ossp.sql

Set up the dirtsand database

cd ~/dirtsand/src # if you switched the user, you may have to change this to the correct path
sudo -u postgres psql -d dirtsand < db/dbinit.sql
sudo -u postgres psql -d dirtsand < db/functions.sql

If there were no other errors, your database should be ready for DirtSand. If you had to log in as root to run "sudo", exit that shell now, it is no longer necessary.

Configure dirtsand

A sample dirtsand.ini has been provided in the root of the dirtsand sources. We can copy this to our install directory and then edit the fields we need. If you have dirtsand installed to somewhere other than /opt/dirtsand, you will also need to point the configuration to the right paths too.

cd ~/dirtsand
sudo cp src/dirtsand.sample.ini dirtsand.ini
<your-favorite-editor> dirtsand.ini

For now, only change the database settings - usually, the line containing "Db.Password" should be the only one you need to change. It must be set to the same random series of characters that you used when creating the user in postgres.

Done!

That's it for the actual server setup. To complete this installation to a working Shard, more work is required - have a look at the Sandbox Shard tutorial.