Rodan worker

If you are planning on creating a Rodan web server, make sure you visit that page first. This will set up Rodan worker. First, check out Rodan source, either by git (make sure to do a recursive clone for populating all submodules):

$> git clone --recursive https://github.com/DDMAL/Rodan.git

Following instructions will use $RODAN_HOME as the absolute path where you have checked out the Rodan source code.

Set up Python environment

Rodan is based on Python 2.7.x. Python 3 does not work with Rodan.

We recommend that all Python packages (see requirements.txt) should be installed inside a dedicated virtual environment for Rodan, because a virtual environment allows you to have multiple Python "environments" on the same machine:

$> sudo pip install virtualenv
$> cd $RODAN_HOME
$> virtualenv --no-site-packages rodan_env

(Note: from now on, we assume that we are in $RODAN_HOME.)

Then activate virtual environment:

$> source rodan_env/bin/activate

Note that your prompt looks like the following:

(rodan_env)$>

Whatever Python modules are installed from now on will only be available while in this virtual environment. (To exit your virtual environment, simply use the command deactivate.)

Then we install all Python packages. You may need system libraries before compiling some of them. On Ubuntu, perform:

(rodan_env)$> sudo apt-get install libpython-dev lib32ncurses5-dev:i386 libxml2-dev libxslt1-dev zlib1g-dev lib32z1-dev libjpeg-dev libpq-dev

If lib32z1-dev fails, you can download it from here packages.ubuntu.com

If it's still giving you trouble, install aptitude and double click the deb file.

sudo apt-get install aptitude
sudo apt-get -f install
sudo apt-get install aptitude

For other Linux distributions, please find corresponding names.

Install Python packages:

(rodan_env)$> pip install -r requirements.txt
(rodan_env)$> pip install Werkzeug

Mac users: if you get an error about not having a c compiler, try running:

$>export CC=gcc

If you get "error: use of undeclared identifier 'SOL_TCP'", go into requirements.txt and change the line uWSGI==2.0.11.1 to uWSGI==2.0.15

Now, exit virtual environment by executing:

(rodan_env)$> deactivate

Install NFS client (if NFS is configured. Skip if Mac user)

(rodan_env)$> apt-get install nfs-common inotify-tools

Create a folder for mounting NFS folder as $RESOURCE_FOLDER_MOUNT_POINT.

Configure Rodan source

For running the configuration, a SECRET_KEY is needed. To generate your SECRET_KEY, you can either use the code below or you can use any random combination of ascii characters:

import random, string
print 'SECRET_KEY={0}'.format(''.join(random.SystemRandom().choice(string.ascii_uppercase + string.digits) for _ in range(40)))

Install autoconf (Ubuntu: use apt-get, Mac: use brew). Change directory to Rodan source code directory, and run following commands (make sure the paths and names are correct for your setup):

$> autoconf
$> ./configure --enable-debug=no --enable-diva MODE="worker" \
       RODAN_VENV_DIR=/myapps/Rodan/rodan_env/ \
       RODAN_DATA_DIR=/myapps/Rodan/data \
       AMQP_HOST="localhost" AMQP_PORT="5672" AMQP_VHOST="rodan" \
       AMQP_USER="rodan" AMQP_PASSWORD="12345" \
       DB_HOST="localhost" DB_PORT="5432" \
       DB_NAME="rodan" DB_USER="rodan" DB_PASSWORD="12345" \
       DB_REDIS_PORT="6379" DB_REDIS_DBNUMBER=0 \
       WWW_USER="www-data" WWW_GROUP="www-data" \
       SECRET_KEY=@SECRET_KEY \                                # use the random SECRET_KEY from above
       --with-graphicsmagick-search-path="/myhome/bin/" \      # not required if not using some of native jobs
       --with-kdu_compress-search-path="/myhome/bin/" \        # not required if not using some of native jobs
       --with-xmllint-search-path="/myhome/bin/" \             # not required if not using some of native jobs
       --with-vips-search-path="/myhome/bin/"                  # not required if not using some of native jobs

$WWW_USER and $WWW_GROUP are the user and group that actually run the Rodan code. In a production environment, it is highly recommended to set up the dedicated account for limiting the permission of the application.

The configure script will output the command for altering the user and group for Rodan application and data directories, like follows:

$> sudo chgrp -R $WWW_GROUP $RODAN_HOME/*
$> sudo chown $WWW_USER:$WWW_GROUP $RESOURCE_FOLDER_MOUNT_POINT

In the settings.py file, replace the variables "@EMAIL_USERNAME@" and "@EMAIL_PASSWORD@" by either an email and password or an empty string. Replace the variable @MAX_PAGINATE_BY@ by 100. (This is to avoid getting a syntax error).

Next, follow the steps from Rodan Web Server, skipping the first configure step. Afterwards install Rodan Client to get the interface.

Install and configure supervisor (Optional)

We use supervisor to register Rodan as system services.

Install supervisor:

$> sudo apt-get install supervisor

Mac users:

$> sudo brew install supervisor

Copy generated supervisor configurations:

$> cp $RODAN_HOME/etc/supervisor/conf.d/rodan.conf /etc/supervisor/conf.d/

Set up requirements for image processing jobs (optional if you do not intend to use Rodan for optical music recognition)