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This documentation is for Release 7.0 and above. For documentation on previous releases, please select from the options below.

  • Release 1.x version of this page: v.81
  • Release 2.x version of this page: v.87.
  • Release 3.0-3.1 version of this page: v.111.
  • Release 3.2 version of this page: v.116.
  • Release 4.0 version of this page: v.143.
  • Release 5.x version of this page: v.163.
  • Release 6.0 version of this page: v.177
  • Release 6.3-6.5 version of this page: v.201

These instructions provide a recipe for building your own all-in-one Avalon setup system from scratch on CentOS or Red Hat Enterprise Linux version 7.x.  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.

Table of Contents

Ready the Installation Environment

Install EPEL

Code Block
rpm -ivh

This package has libyaml-devel which is required by ruby and not provided by Redhat.

Make sure a valid hostname is resolvable

The default hostname is “”, so name the machine this and enter it into /etc/hosts

Code Block
# hostname
# cat /etc/hosts   localhost localhost.localdomain localhost4 localhost4.localdomain4



The instructions below require being run as root unless specifically noted otherwise.

Storage requirement

Avalon and components need about 20GB of disk space to install.

Open ports requirement

The Avalon Media System requires several ports to be open to client browsers.

Here are the port settings that will need to be configured:

80HTTP (Avalon)Yes
1935RTMP (red5)Yes5080
8983HTTP (
8984HTTP (Fedora
8980HTTP (


The preferred method is to create a shell script that will do the work for you. Here is an example script :


that you should look through and customize as needed:


If you're connected over ssh, it might kick you off.

Save your script to /etc/sysconfig/, make it executable and run it.


If you're connected over ssh, it might kick you off.

Code Block
chmod +x /etc/sysconfig/


If you run into connection issues you can disable the iptables, by running "service iptables stop". This will completely drop your firewall. When finished troubleshooting run "service iptables start".

Disable SELinux

Code Block
echo 0 > /selinux/enforce 
vim /etc/selinux/config #change the value of `SELINUX` from `enforcing` to `permissive`


Create the NUL repository config file:


You may have to disable SELinux completely if there's Passenger installation problem

vim /etc/yum.repos.d/nul-public.repo

Append the following code:

Code Block
name=NUL Library Public RHEL repository

Install and place the NUL GPG key in the proper location:

Code Block
curl -o /etc/pki/rpm-gpg/RPM-GPG-KEY-nul


selinux/config #change the value of `SELINUX` to `disabled`

Reboot to apply change

Code Block
shutdown -r now

Install EPEL

This package has libyaml-devel which is required by ruby and not provided by Redhat.

Code Block
yum install

Install development libraries and packages for building Ruby

Code Block
yum groupinstall "Development Tools"
yum install readline-devel zlib-devel libyaml-devel libffi-devel openssl-devel libxml2-devel libxslt-devel cmake


Install Apache Tomcat with the nulrepo-public repository configured and enabled.

Install Java 8

Code Block
yum install java-1.8.0-openjdk

Main Components



MariaDB is now the default database system for CentOS/RHEL7 and can be used interchangeably with MySql.  MySql or PostgreSQL can be substituted if desired.

Avalon uses MariaDB for storing search queries, user data and roles, and as a back end our encoding dashboard. 

Install MariaDB server 

Code Block
yum install tomcatmariadb-server
service tomcat start
systemctl start mariadb

Fedora Commons Repository


Fedora runs as a webapp in Tomcat

Install Apache Tomcat 

Code Block
titleRHEL 7
yum install tomcat
vim /usretc/local/tomcat/conf/server.xml

on line 70, change the Tomcat connector port from 8080 to 8983:

Code Block
<Connector port="8983" protocol="HTTP/1.1" #line 71, change the Tomcat connector port from 8080 to 8984

Add Tomcat manager user

By default, no user has access to the Tomcat Manager App.  


Define a user in /etc/tomcat/tomcat-users.xml


Define a user in tomcat-users.xml with  with access to the manager-gui role. Below is a very basic example.

Code Block
  <role rolename="manager-gui"/>
  <user username="admin" password="tomcat<insert strong password here>" roles="manager-gui"/>

Restart Tomcat

Code Block
service tomcat restart


Create Fedora user and database

Enter the mariadb client

Code Block
mariadb> create database fcrepo CHARACTER SET utf8 COLLATE utf8_general_ci;
mariadb> create user 'fcrepo'@'localhost' identified by '<fcrepo_password>';
mariadb> grant all privileges on fcrepo.* to 'fcrepo'@'localhost';

mariadb> create database rails CHARACTER SET utf8 COLLATE utf8_general_ci;
mariadb> create user 'rails'@'localhost' identified by '<rails_pasword>';
mariadb> grant all privileges on rails.* to 'rails'@'localhost';

mariadb> flush privileges;

Check your work and exit

Code Block
mariadb> show databases;
| Database           |
| information_schema |
| mysql              |
| fcrepo             |
| performance_schema |
| test               |
5 rows in set (0.00 sec)
mariadb> exit;

Configure Tomcat for Fedora

Append the following to /etc/tomcat/tomcat.conf

Code Block
JAVA_OPTS="-Dfcrepo.modeshape.configuration=classpath:/config/jdbc-mysql/repository.json -Dfcrepo.mysql.username=fcrepo -Dfcrepo.mysql.password=<fcrepo_password> -Dfcrepo.mysql.port=3306 -Dfcrepo.home=/var/avalon/fedora/"

Download and run the fcrepo installer

Code Block
mkdir -p /var/avalon/fedora
chown tomcat:tomcat /var/avalon/fedora
wget -O /usr/share/tomcat/webapps/fedora4.war

Restart Tomcat

Code Block
systemctl restart tomcat

See if you can access Fedora's REST interface at http://<server host name>:89838984/managerfedora4/htmlrest

Try it out on your local machine and on another machine. If you can't reach the app from another machine, your your iptables might  might need to be changed to allow access. If Fedora is not up, check the tomcat logs in /var/log/tomcat/. Catalina.out and localhost.<date>.log usually provide the best information.


Avalon makes use of Solr through the Blacklight gem for faceting and relevance-based searching.

Install prerequisites

Code Block
yum install lsof

Download the solr tarball and


run the installation script

Download Solr from

Code Block
tar xvfxzf solr-46.26.06.tgz mv solr-46.26.0 6/usrbin/local/solr
cd /usr/local/solr/dist/
cp solr-4.2.0.war /usr/local/tomcat/webapps/solr.war
mv solr-4.2.0.war /usr/local/solr/solr.war

Add XML configurations

Edit /usr/local/tomcat/conf/Catalina/localhost/solr.xml and add

Code Block
<Context docBase="/usr/local/solr/solr.war" debug="0" crossContext="true">
 <Environment name="solr/home" type="java.lang.String" value="/usr/local/solr" override="true"/>

Edit /usr/local/solr/solr.xml and insert

Code Block
<?xml version="1.0" encoding="UTF-8" ?>
  <solr persistent="true">
    <cores defaultCoreName="avalon" adminPath="/admin/cores" zkClientTimeout="${zkClientTimeout:15000}" hostPort="8983" hostContext="solr">
    <core instanceDir="avalon/" name="avalon"/>

Download and Install Avalon specific Solr files from github

Code Block
mkdir /usr/local/solr/lib
mv /usr/local/solr/dist/* /usr/local/solr/lib/
mv /usr/local/solr/contrib /usr/local/solr/lib/
unzip master
mv puppet-solr-master/files/avalon /usr/local/solr
chown -R tomcat7:tomcat /usr/local/solr/
chown -R tomcat7:tomcat /usr/local/tomcat
service tomcat --strip-components=2
bash ./ solr-6.6.6.tgz

By default, the script extracts the distribution archive into /opt, configures Solr to write files into /var/solr, and runs Solr as the solr user. Follow the linked guide if you wish to change these defaults.

Create Avalon core for Solr

Code Block
mkdir -p /tmp/avalon_solr/
wget -O /tmp/avalon_solr/solrconfig.xml
wget -O /tmp/avalon_solr/schema.xml
su solr # Needs to run as solr user
/opt/solr/bin/solr create_core -c avalon -d /tmp/avalon_solr

If you have successfully installed Solr you should be able to access the dashboard page at http://<server host name>:8983/solr

If you can't access the dashboard, check the tomcat logs in /usr/local/tomcat/logs/. Catalina.out and localhost.<date>.log usually provide the best information.


Avalon uses MySQL for storing search queries, user data and roles, and as a back end for asynchronously sending requests to Matterhorn.

Install MySQL server 

Code Block
yum install mysql-server
service mysqld start

Create databases and users

Enter the mysql monitor

Code Block
Welcome to the MySQL monitor. Commands end with ; or \g.

Create a database for the Fedora Commons Repository software and add a user to it 

Code Block
create database fedora3;
create user 'fcrepo'@'localhost' identified by 'fcrepo';
grant all privileges on fedora3.* to 'fcrepo'@'localhost';
flush privileges; 

Create a database for the Avalon web application and add a user to it

Code Block
create database rails;
create user 'rails'@'localhost' identified by 'rails';
grant all privileges on rails.* to 'rails'@'localhost';
flush privileges;

Check your work and exit

Code Block
mysql> show databases;
| Database           |
| information_schema |
| fedora3            |
| mysql              |
| rails              |
| test               |
5 rows in set (0.00 sec)
mysql> select user, host from mysql.user;
| user   | host         |
| root   |    |
|        | |
| root   | |
|        | localhost    |
| fcrepo | localhost    |
| rails  | localhost    |
| root   | localhost    |
7 rows in set (0.00 sec)
mysql> exit;

See documentation for your version of MySQL Server for detailed syntax ( )

Fedora Commons Repository

Download and run the fcrepo installer
Code Block
java -jar fcrepo-installer-3.6.2.jar

Use the following values in place of defaults

Installation type
Fedora home directory
Fedora administrator password
Fedora server host
Fedora application server context
Authentication requirement for API-A
SSL availability
SSL required for API-A
SSL required for API-M
Servlet engine
Tomcat home directory
Tomcat HTTP port
Tomcat shutdown port
Tomcat Secure HTTP port
Keystore file
Keystore password
Keystore type
MySQL JDBC driver
Database username
Database password

Accept remaining defaults then add permissions for Tomcat and restart Tomcat

Code Block
chown -R tomcat7:tomcat /usr/local/fedora
service tomcat restart

Red5 Media 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.

Code Block
useradd red5

Download and install Red5.

Code Block
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.

Code Block
wget -O
mv /etc/rc.d/init.d/red5

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

Code Block
chown -R red5:red5 /usr/local/red5
chmod +x /etc/rc.d/init.d/red5


Installation prerequisites

Install prerequisite packages using yum and the NUL-public repository

Code Block
yum install SDL-devel a52dec-devel bzip2-devel faad2-devel freetype-devel frei0r-plugins-devel \
	gsm-devel imlib2-devel lame-devel libdc1394-devel libraw1394-devel librtmp-devel libtheora-devel \
	libva-devel libfaac-devel libvdpau-devel libstdc++-devel libvorbis-devel libvpx-devel \
	mediainfo opencore-amr-devel opencv-devel openjpeg-devel openssl-devel schroedinger-devel \
	speex-devel texi2html vo-aacenc-devel x264-devel xvidcore-devel yasm zlib-devel

Install rpmdev-setuptree

Code Block
yum install rpmdevtools

Install ffmpeg srpm

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

Code Block
su - red5

Run the ffmpeg installer

Code Block
#rpm -ivh
   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/ffmpeg12.spec

Log back in as root and finish the install.

Code Block
su - root
rpm -ivh /home/red5/rpmbuild/RPMS/x86_64/ffmpeg-*.rpm


Install and start the httpd service.

Code Block
yum install httpd
service httpd start


Install Matterhorn

Create a user for Matterhorn and then install Matterhorn

Code Block
useradd matterhorn
tar xvf 1.4.x
mv avalon-felix-1.4.x /usr/local/matterhorn

mv /etc/init.d/matterhorn

chmod +x /etc/init.d/matterhorn
chown -R matterhorn:matterhorn /usr/local/matterhorn

Add avalon user and create avalon directory.

Code Block
useradd avalon
mkdir /var/www/avalon
chown -R avalon:avalon /var/www/avalon

Create and configure streaming directories.

Code Block
mkdir -p /usr/local/red5/webapps/avalon/streams
mkdir /var/avalon
mkdir -p /var/www/avalon/public/streams

chown red5:avalon /usr/local/red5/webapps/avalon/streams
chmod 0775 /usr/local/red5/webapp/avalon/streams
ln -s /usr/local/red5/webapps/avalon/streams /var/avalon/rtmp_streams
mkdir /var/avalon/hls_streams
chown root:root /var/avalon/hls_streams/
ln -s /var/avalon/hls_streams/ /var/www/avalon/public/streams

chmod 0775 /var/avalon/hls_streams/

Configure Matterhorn

Download Matterhorn config and verify property values.

Code Block
Change the server url port from 18080 to 8080
Code Block

And verify the configuration of the streaming directories

Code Block

Move the config to the appropriate spot

Code Block
mv /usr/local/matterhorn/etc/

Add matterhorn user to the avalon group.


Instructions on how to manually start/stop Solr:

Media Streaming Server

An HLS-enabled server like Wowza, Adobe Media Server (commercial) or Nginx + the HLS module (open-source) can take an mp4 created by Avalon and stream it on the fly.

Nginx instructions

Code Block
titleInstall Nginx with vod module
rpm -ihv
yum install kaltura-nginx

Add /etc/nginx/nginx.conf

Code Block
user nginx;
worker_processes 4;

events {
  worker_connections 1024;

http {
  server {
    listen 8980;

    vod_mode local;
    vod_last_modified 'Sun, 19 Nov 2000 08:52:00 GMT';
    vod_last_modified_types *;
    vod_metadata_cache metadata_cache 512m;
    vod_response_cache response_cache 128m;
    gzip on;
    gzip_types application/;
    open_file_cache          max=1000 inactive=5m;
    open_file_cache_valid    2m;
    open_file_cache_min_uses 1;
    open_file_cache_errors   on;

    location ~ ^/avalon/(?<stream>.+)/(?<resource>.+\.(?:m3u8|ts)) {
      alias /var/avalon/derivatives/$stream;
      vod hls;

      set $token "$arg_token";
      add_header X-Stream-Auth-Token "$token";
      sub_filter_types application/;
      sub_filter_once off;
      sub_filter '.ts' ".ts?token=$token";

      auth_request /auth;
      add_header Access-Control-Allow-Headers '*';
      add_header Access-Control-Expose-Headers 'Server,range,Content-Length,Content-Range';
      add_header Access-Control-Allow-Methods 'GET, HEAD, OPTIONS';
      add_header Access-Control-Allow-Origin '*';
      expires 100d;

    location = /auth {
      # resolver;
      proxy_pass_request_body off;
      proxy_set_header Content-Length "";
      proxy_set_header X-Original-URI $request_uri;


listen should use a public open port.

alias should point to where the actual stream files are.

proxy_pass needs changing if installing Nginx on a different server.

Add /lib/systemd/system/nginx.service

Code Block
Description=The NGINX HTTP and reverse proxy server

ExecStartPre=/usr/sbin/nginx -t
ExecReload=/usr/sbin/nginx -s reload
ExecStop=/bin/kill -s QUIT $MAINPID


Add nginx user and let it own nginx stuff

Code Block
useradd -M -s /bin/nologin nginx
chown -R nginx:nginx /etc/nginx /var/log/nginx 

Make 8980 bindable and start nginx

Code Block
semanage port -a -t http_port_t  -p tcp 8980
systemctl start nginx

Later: Avalon config should be updated to be compatible with Nginx:

Code Block
  server: :nginx
  http_base: 'http://localhost:8980/avalon'
  content_path: '/var/avalon/derivatives'


If you enable SSL on Avalon server, you should also enable SSL on the streaming server to avoid Mixed content warning.

FFmpeg & Mediainfo

titleDownload prebuilt ffmpeg

The following prebuilt binaries are provided by a third party. Proceed with caution.

Download and install ffmpeg (for transcoding & thumbnails)

Code Block
mkdir -p /tmp/ffmpeg && cd /tmp/ffmpeg
curl | tar xJ
cp `find . -type f -executable` /usr/bin/

Install Mediainfo (for technical metadata)

Code Block
yum install mediainfo


Install and start the httpd service.

Code Block
yum install httpd
systemctl start httpd

Apache Passenger and Ruby

Change current user to avalon then install RVM and ruby 12.9.3-p429.4.1

Code Block
yum install ruby sqlite-devel # Needed to build Ruby using RVM.
useradd avalon
su - avalon
curl -L | bash -s stable --ruby=12.95.35

Source the RVM shell (as avalon user) or close the terminal and open it back up.

Code Block
source /home/avalon/.rvm/scripts/rvm

Install Passenger via Gem (as avalon user)

Code Block
gem install passenger

Check to make sure passenger installed in the expected location (as avalon user)

Code Block
$ passenger-config --root
rvm use 2.5.5

Install Passenger apache module requirements (as root)

Code Block
su - root
yum install pygpgme curl-devel
httpdcurl httpd-devel apr-develfail apr-util-devel

Build passenger for your version of Apache and Ruby (as avalon user)

Code Block
su - avalon
passenger-install-apache2-module #copy the suggested Apache configuration file settings for later

Create an apache configuration file (as root)

Code Block
su - root
vim /etc/httpd/conf.d/passenger.conf

Example contents of /etc/httpd/conf.d/passenger.conf:

Code Block
LoadModule passenger_module /home/avalon/.rvm/gems/ruby-1.9.3-p448/gems/passenger-4.0.10/buildout/apache2/
<IfModule passenger_module>
  PassengerRoot /home/avalon/.rvm/gems/ruby-1.9.3-p448/gems/passenger-4.0.10
  PassengerDefaultRuby /home/avalon/.rvm/wrappers/ruby-1.9.3-p448/ruby
  PassengerMaxPoolSize 30
  PassengerPoolIdleTime 300
  PassengerMaxInstancesPerApp 0
  PassengerMinInstances 3
  PassengerSpawnMethod smart-lv2

Apache security configuration

Code Block
wget -O /usr/local/sbin/avalon_auth
chmod +x /usr/local/sbin/avalon_auth
wget -P /etc/httpd/conf.d/-sSLo /etc/yum.repos.d/passenger.repo

yum install mod_passenger || yum-config-manager --enable cr && yum install mod_passenger

Create a virtual host for avalon in /etc/httpd/conf.d/avalon.conf

Code Block
wget --no-check-certificate -P /etc/httpd/conf.d/
vim /etc/httpd/conf.d/20-avalon.conf

Add this line to In 20-avalon under .conf add this line inside the VirtualHost tag:

Code Block
RailsEnv development

Restart apache.  With apache running, check passenger-status

Code Block
/etc/init.d/httpd restart
su - avalon
which passenger-status
#> ~/.rvm/gems/ruby-1.9.3-p448/bin/passenger-statusproduction

If using SSL, the following fix should be added to address BEAST, POODLE, RC4 issues (after the SSLEngine on)

Code Block
SSLProtocol all -SSLv2 -SSLv3

Modify /etc/httpd/conf.d/passenger.conf

Code Block
PassengerRuby /home/avalon/.rvm/rubies/ruby-2.5.5/bin/ruby

Validate passenger install and restart apache

Code Block
passenger-config validate-install
systemctl start httpd


Grab Avalon code from github

Code Block
cd ~
git clone git cd avalon
git checkout master #make sure you are in the master branch (should be by default)
mv public/* /var/www/avalon/public/
mvchown -R *avalon:avalon /var/www/avalon/

Configure Avalon 


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

Code Block
if ENV['MY_RUBY_HOME'] && ENV['MY_RUBY_HOME'].include?('rvm')
     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."
 # If you're not using Bundler at all, remove lines bellow
 ENV['BUNDLE_GEMFILE'] = File.expand_path('../Gemfile', File.dirname(__FILE__))
 require 'bundler/setup'RAILS_ENV'] ||= 'production'

Configure database settings

Code Block
cd /var/www/avalon/config
cp authentication.yml.example config/authentication.yml
vim database.yml


Code Block
vim database.yml

Replace database.yml with the correct values for your development environmentproduction environment. Note that the pool setting should be equal or exceed the number of concurrent jobs in Sidekiq.

Code Block
  adapter: mysql2
  host: localhost
  database: rails
  username: rails
  password: rails
  pool: 520
  timeout: 5000

Install the mysql2 adapter 

Code Block
yum install mysql-devel
su - avalon
gem install activerecord-mysql2-adapter
gem install mysql2
su - root
vim /var/www/avalon/Gemfile

Add this line to the Gemfile

Code Block
gem 'mysql2', '~>0.3.11'

Run the bundle install

Code Block
cmake #<--will be required for rugged gem
yum install mariadb-devel

Install gems

Run the bundle install

Code Block
# as root
yum install nodejs # Javascript runtime 

# as avalon
su - avalon
cd /var/www/avalon
gem update debugger-ruby_core_sourceinstall bundler
bundle install --with mysql production --without development test

Finish configuring Avalon

Edit /var/www/avalon/config/solr.yml and /var/www/avalon/config/blacklight.yml

Code Block
    url: http://localhost:8983/solr/avalon

Edit /var/www/avalon/config/fedora.yml

Code Block
    user: fedoraAdmin
    password: fedoraPasswordfedoraAdmin

Create  /var/www/avalon/config/matterhorn.yml

Code Block
  url: http://matterhorn_system_account:CHANGE_ME@localhost:8080/


    base_path: ""

Create streaming directory

Code Block
# as root
mkdir -p /var/avalon/derivatives
chown avalon:avalon /var/avalon/derivatives

titleAvalon config file

Avalon settings now live in /var/www/avalon/config/




The default values should be sufficient to start with.

They can be selectively overwritten by creating a settings/<environment>.yml, or by using environment variables. Consult the config gem doc to understand how it works, or Avalon's documentation to customize this file for your installation.


Code Block

Let Avalon know where your HLS streams are

Code Block
  dropboxserver: :nginx
   pathhttp_base: 'http:/var/avalon/dropbox/localhost:8980/avalon'
    uploadcontent_uripath: 'sftp://localhost/var/avalon/dropbox'
    username: 'test'
    password: 'test'
    notification_email_address: ''

Create the database using rake

Code Block
su - avalon
cd /var/www/avalon
rake db:createderivatives'

Change the secrets.yml file:

Code Block
export RAILS_ENV=production
rake secret

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

More information: Configuration Files#config/secrets.yml

Create controlled_vocabulary.yml

Code Block
cp config/controlled_vocabulary.yml.example config/controlled_vocabulary.yml

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.


Code Block
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'

Code Block
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.


Code Block


This is a known identity with administrative privileges.

Start delayed_job

As avalon run

Code Block
cd /var/www/avalon/
bundle exec rake delayed_job:start

Delayed Job handles background jobs.  DelayedJob logs to log/delayed_job.log in the avalon directory. 

Red5 Avalon Security Webapp

Code Block
cd /usr/local/red5/webapps
tar xvzf red5-avalon.tar.gz
chown -R red5:red5 avalon/

Edit /usr/local/red5/webapps/avalon/WEB-INF/

Code Block

Restart Red5

Code Block
service red5 restart

If Red5 is installed and running you should be able to access

Install yarn and node modules

Code Block
# as root
curl --silent --location | sudo tee /etc/yum.repos.d/yarn.repo
yum install yarn

# as avalon
su - avalon
cd /var/www/avalon
yarn install

Precompile assets

Code Block
# as avalon
RAILS_ENV=production bundle exec rake assets:precompile

Restart Apache

Code Block
# as root
systemctl restart httpd

Install ImageMagick

Code Block
# as root
yum install imagemagick


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

Install Redis

Code Block
# as root
yum install redis
systemctl start redis

Install Sidekiq

Code Block
# as root
wget -O /lib/systemd/system/sidekiq.service

Edit the following lines in sidekiq.service 

Code Block
ExecStart=/bin/bash -lc '/home/avalon/.rvm/gems/ruby-2.5.5/bin/bundle exec sidekiq -e production'

Code Block
# as root
systemctl start sidekiq

Sidekiq logs to STDOUT. 

titletmp Error after uploading file

When ingesting a media file, you may encounter an error message saying that file:///tmp/filename can’t be accessed or located.  This may result from the protected temp file settings that are defaults in CentOS 7.  Fix by changing “true” to “false” for PrivateTmp in these files in /usr/lib/systemd/system:

sidekiq.service  PrivateTmp=false
nginx.service   PrivateTmp=false
httpd.service   PrivateTmp=false

Additional Configurations


Code Block
groupadd -r dropbox
useradd -r avalondrop
usermod -G dropbox avalon
mkdir -p /varsrv/avalon/dropbox
chown avalondrop:dropbox /varsrv/avalon/dropbox
chmod 2775 /varsrv/avalon/dropbox

Edit /etc/ssh/sshd_config

Code Block
# override default of no subsystems
Subsystem sftp internal-sftp
# Example of overriding settings on a per-user basis
#Match User anoncvs
# X11Forwarding no
# AllowTcpForwarding no
# ForceCommand cvs server
Match Group dropbox
ChrootDirectory /varsrv/avalon
X11Forwarding no
AllowTcpForwarding no
ForceCommand internal-sftp


Code Block
service sshd restart

Batch ingest

To manually start a batch ingest job, run as avalon user

Code Block
rake avalon:batch:ingest

To make batch ingest run automatically whenever a manifest is present, you need to add a cron job. This cron job can be created by the whenever gem from reading config/schedule.rb. To preview, run

Code Block

this will translate content in schedule.rb to cron job syntax. Once verified, run the following to write job to crontab

Code Block
whenever --update-crontab

You should get the cron job automatically if you were deploying from Capistrano.

Authentication Strategy

Avalon comes with Persona by default but it can be configured to work with other authentication strategies by using the appropriate omniauth gems. The following example is applicable to Indiana University CAS, it may need some adjustments in order to work with other CAS implementation.

Add to Gemfile

Code Block
gem 'net-ldap'
gem 'omniauth-cas', :git => ""

Install new gems

Code Block
bundle install

Add to config/initializers/my-ldap.rb

Code Block
module Avalon
      MY_GUEST_LDAP = = ""
      MY_GUEST_LDAP.authenticate 'cn=******,ou=Accounts,dc=eads,dc=myuni,dc=edu', '******'

      GROUP_LDAP = = ""
      GROUP_LDAP.authenticate 'cn=******,ou=Accounts,dc=ads,dc=myuni,dc=edu', '******'
      GROUP_LDAP_TREE = "dc=ads,dc=myuni,dc=edu"

Add config/initializers/user_auth_cas.rb

Code Block
require 'net/ldap'

User.instance_eval do
  def self.find_for_cas(access_token, signed_in_resource=nil)
    logger.debug "#{access_token.inspect}"
    #data =
    username = access_token.uid
    email = nil

    user = User.where(:username => username).first

    unless user
      if email.nil?
        tree = "dc=ads,dc=myuni,dc=edu"
        filter = Net::LDAP::Filter.eq("cn", "#{username}")
        email = => tree, :filter => filter, :attributes=> ["mail"]).first.mail.first
      user = User.find_or_create_by_username_or_email(username, email)
      raise "Finding user (#{ user }) failed: #{ user.errors.full_messages }" unless user.persisted?

Add to config/settings/production.local.yml

Code Block
    - :name: My University
      :logo: my_logo.png
      :provider: :cas
        :login_url: /cas/login
        :service_validate_url: /cas/validate
        :logout_url: /cas/logout
        :ssl: true

Using the System

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

Create an admin account

You can  create an account from the command line in the root of your avalon install:

Code Block
bundle exec rake avalon:user:create avalon_password=password avalon_groups=administrator

Additional information

You can find specific information about using the system in the Collection Manager's Guide. Upload items individually or via batch. Batch demo  Sample content is available for your convenience, which includes the media files and an excel document necessary to run a batch.  You can submit a batch directly .  Upload new items individually or by batch directly via SFTP using the avalondrop account you created above.

Configure additional feataures

Known Issues - Release 1.0 - a list of bugs, workarounds, and cautions for using Release 1.0.

Restarting the Server

Before you restart your Avalon server, you'll want to make sure all of the services necessary to run Avalon will start automatically after the restart. Run these commands once and you should be set:

Code Block
chkconfig --level 345 tomcat on
chkconfig --level 345 mysqldmariadb on
chkconfig --level 345 nginx on
chkconfig --level 345 sshd on
chkconfig --level 345 red5redis on
chkconfig --level 345 httpdsidekiq on
chkconfig --level 345 matterhornhttpd on