These instructions provide a recipe for building your own all-in-one Avalon system from scratch on CentOS or Red Hat Enterprise Linux, version 6.x is supported, 7.x will be supported soon.  Please note that while an all-in-one installation as outlined here is certainly suitable for testing and demos,  a single, all-in-one, server may not be suitable for production environments.

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See documentation for your version of MySQL Server for detailed syntax (http://dev.mysql.com/doc/refman/5.1/en/create-database.html )

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Media Streaming Server

Red5 is an open source alternative to Adobe Media Server. If using the Adobe Media Server you can skip to the next step.

Create a red5 user.

useradd red5

Download and install Red5.

wget http://repo.avalonmediasystem.org/red5-1.0.1.tar.gz
tar xvf red5-1.0.1.tar.gz
mv red5-server-1.0 /usr/local/red5

Download the init script and add it to the init.d directory.

wget https://raw.github.com/avalonmediasystem/avalon-installer/master/modules/red5/templates/red5_init_script.erb -O red5_init_script.sh
mv red5_init_script.sh /etc/rc.d/init.d/red5

Give Red5 permissions to the red5 directory and the init script.

By default, Avalon prechunks HLS artifacts that can be served by any webserver, see: Matterhorn's distribute-streaming workflow. However many consider that inflexible and inconvenient.

An HLS-enabled server like Wowza (commercial) or Nginx + the HLS module (open-source) can take an mp4 created from distribute-streaming and stream it on the fly. Then prechunking can be disabled by commenting out the distribute-hls operation. Instructions for setting up Nginx will follow soon.

FFmpeg

Installation prerequisites

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The following commands need to run under a user other than root. Change to the red5 another user to continue.

su - red5someuser

Run the ffmpeg installer

rpmdev-setuptree
rpm -ivh https://github.com/avalonmediasystem/avalon-installer/blob/master/files/ffmpeg/ffmpeg-2.4.2-1.el6.src.rpm?raw=true

# Retrieving https://github.com/avalonmediasystem/avalon-installer/blob/master/files/ffmpeg/ffmpeg-2.4.2-1.el6.src.rpm
#   1:ffmpeg                 warning: user makerpm does not exist - using root
# warning: group makerpm does not exist - using root
########################################### [100%]
# warning: user makerpm does not exist - using root
# warning: group makerpm does not exist - using root
# Build ffmpeg binary as non-root and install as root

rpmbuild -bb rpmbuild/SPECS/ffmpeg24.spec

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su - root
rpm -ivh /home/red5someuser/rpmbuild/RPMS/x86_64/ffmpeg-*.rpm

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cd ~
git clone git://github.com/avalonmediasystem/avalon.git
cd avalon
git checkout master #make sure you are in the master branch (should be by default)
su - root
chown avalon:avalon /var/www/avalon/public/
su - avalon
mv public/* /var/www/avalon/public/
rmdir public
mv  * /var/www/avalon/

Configure Avalon 

Configure Avalon 

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if ENV['MY_RUBY_HOME'] && ENV['MY_RUBY_HOME'].include?('rvm')
   begin
     gems_path = ENV['MY_RUBY_HOME'].split(/@/)[0].sub(/rubies/,'gems')
     ENV['GEM_PATH'] = "#{gems_path}:#{gems_path}@global"
     require 'rvm'
     RVM.use_from_path! File.dirname(File.dirname(__FILE__))
   rescue LoadError
     raise "RVM gem is currently unavailable."
   end
 end
 # If you're not using Bundler at all, remove lines bellow
 ENV['BUNDLE_GEMFILE'] = File.expand_path('../Gemfile', File.dirname(__FILE__))
 require 'bundler/setup'

Configure database settings

Anchor
mysql2 mysql2

cd /var/www/avalon/config
cp authentication.yml.example
authentication.yml

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vim database.yml

Replace database.yml with the correct values for your production environment

development:
  adapter: mysql2
  host: localhost
  database: rails
  username: rails
  password: rails
  pool: 5
  timeout: 5000

Install the mysql2 adapter 

yum install cmake #<--will be required for rugged gem
yum install mariadb-devel
su - avalon
gem install activerecord-mysql2-adapter
gem install mysql2
vim /var/www/avalon/Gemfile

Add this line to the Gemfile

gem 'mysql2', '~>0.3.20'

If you are using mysql instead of sqllite (as is done throughout this document), then comment out the following lines in the Gemfile

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development:
  adapter: mysql2
  host: localhost
  database: rails
  username: rails
  password: rails
  pool: 5
  timeout: 5000

Install the mysql2 adapter 

yum install cmake #<--will be required for rugged gem
yum install mariadb-devel
su - avalon
gem install activerecord-mysql2-adapter
gem install mysql2
vim /var/www/avalon/Gemfile

Run the bundle install

# as root
yum install nodejs # Javascript runtime 

# as avalon
cd /var/www/avalon
gem update debugger-ruby_core_source
gem install bundler
bundle install --with mysql

Finish configuring Avalon

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development:
  dropbox:
    path: '/var/avalon/dropbox/'
    upload_uri: 'sftp://localhost/var/avalon/dropbox'
    username: 'test'
    password: 'test'
    notification_email_address: ''
  domain:
    port: 80

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cd /var/www/avalon/config
rake secret

 grab the output of rake secret and add it to secrets.yml where instructed.

More information: Configuration Files#config/secrets.yml

Create controlled_vocabulary.yml

cp controlled_vocabulary.yml.example controlled_vocabulary.yml

Create the database using rake

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cd /var/www/avalon/config
rake db:create

If you get an error message saying that you can't connect to the database, take a look at this post and follow some of the troubleshooting steps.

http://stackoverflow.com/questions/5376427/cant-connect-to-local-mysql-server-through-socket-var-mysql-mysql-sock-38

Run the database migrations

rake db:migrate

Set rails environment to development, if it has not defaulted to this. On the first line of /var/www/avalon/config/environment.rb make sure it says 'development'

ENV['RAILS_ENV'] ||= 'development'

Visit your new Avalon site!

You should be able to visit the webpage with just the hostname (ie http://localhost)

Click on "Sign in" in the upper right corner of the website main page. Set up a default identity with the following properties.

archivist1@example.com
<some password>

This is a known identity with administrative privileges.

Redis & Resque

Avalon uses Resque for background processing, which relies Redis as its key-value store.

Install Redis

yum install redis

Start Resque

# as avalon (replace production with development if necessary)
cd /var/www/avalon/
RAILS_ENV=production BACKGROUND=yes bundle exec rake resque:scheduler
RAILS_ENV=production BACKGROUND=yes QUEUE=* bundle exec rake resque:work

Resque logs to log/resque.log in the avalon directory. 

To restart rescue, simple kill its two processes (`ps aux | grep resque`) and run the above commands again.

Red5 Avalon Security Webapp

cd /usr/local/red5/webapps
wget https://github.com/avalonmediasystem/avalon-installer/raw/master/modules/avalon/files/red5/red5-avalon.tar.gz
tar xvzf red5-avalon.tar.gz
chown -R red5:red5 avalon/

Edit /usr/local/red5/webapps/avalon/WEB-INF/red5-web.properties

avalon.serverUrl=http://localhost/

Restart Red5

service red5 restart

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secret

 grab the output of rake secret and add it to secrets.yml where instructed.

More information: Configuration Files#config/secrets.yml

Create controlled_vocabulary.yml

cp controlled_vocabulary.yml.example controlled_vocabulary.yml

Create the database using rake

# as avalon user
cd /var/www/avalon
rake db:create

If you get an error message saying that you can't connect to the database, take a look at this post and follow some of the troubleshooting steps.

http://stackoverflow.com/questions/5376427/cant-connect-to-local-mysql-server-through-socket-var-mysql-mysql-sock-38

Run the database migrations

rake db:migrate

Set rails environment to development, if it has not defaulted to this. On the first line of /var/www/avalon/config/environment.rb make sure it says 'development'

ENV['RAILS_ENV'] ||= 'development'

Visit your new Avalon site!

You should be able to visit the webpage with just the hostname (ie http://localhost)

Click on "Sign in" in the upper right corner of the website main page. Set up a default identity with the following properties.

archivist1@example.com
<some password>

This is a known identity with administrative privileges.

Redis & Resque

Avalon uses Resque for background processing, which relies Redis as its key-value store.

Install Redis

yum install redis

Start Resque

# as avalon (replace production with development if necessary)
cd /var/www/avalon/
RAILS_ENV=production BACKGROUND=yes bundle exec rake resque:scheduler
RAILS_ENV=production BACKGROUND=yes QUEUE=* bundle exec rake resque:work

Resque logs to log/resque.log in the avalon directory. 

To restart rescue, simple kill its two processes (`ps aux | grep resque`) and run the above commands again.

Additional Configurations

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