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PuMuKIT Installation Guide

Index

  1. Requirements
  2. Single-node Installation on Linux Ubuntu 18.04
  3. Multi-node Installation
  4. Opencast integration
  5. F.A.Q.

1. Requirements

PuMuKIT is a LEMP (Linux, nginx, MongoDB, PHP) application, created with the Symfony framework. It uses libav-tools (or ffmpeg) to analyze the audiovisual data, as well as to transcode the data.

We recommend to install PuMuKIT on Ubuntu 18.04 Linux. PuMuKIT has been developed and tested on that Linux distribution and version.

Although it is recommended to use Ubuntu 18.04 it's not mandatory. You can try other Linux distributions and versions at you own risk. The raw requirements for PuMuKIT installation at OS level are: Linux, nginx (1.4.6), libav-tools (9.18), php7 (7.2) and mongo (3.0). Libav-tools with h264 and aac support is needed. Also the following php7 modules are required: php7.2-json, php7.2-cli, php7.2-mongo, php7.2-ldap, php7.2-curl, php7.2-intl, php7.2-fpm and php7.2-xdebug. Make sure text search is enabled for your mongodb (version 3.0+).

Use composer to check and install the dependencies

PuMuKIT has been developed and is often installed on Linux Ubuntu but its use is not essential. It is known it works on Ubuntu 18.04. If it is installed on other Linux distributions, additional libraries may be required.

2. Single-node Installation on Linux Ubuntu 18.04

In this section we will describe how to install PuMuKIT in a single server (node) running Ubuntu 18.04. A single-node deployment of PuMuKIT is usually recommended for development, demonstration and small production environments.

Follow the below instructions. If any error is thrown check the F.A.Q. section or ask on PuMuKIT community list:

  1. Update APT source list to install last version of MongoDB.

    sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 9DA31620334BD75D9DCB49F368818C72E52529D4
    echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.0.list
    sudo apt-get update
    
  2. Update APT source list to install last version of Nginx.

    sudo wget https://nginx.org/keys/nginx_signing.key
    sudo apt-key add nginx_signing.key
    echo "deb https://nginx.org/packages/mainline/ubuntu bionic nginx" | sudo tee /etc/apt/sources.list.d/nginx.list
    sudo apt-get update
    
  3. Install dependencies of PuMuKIT (see requirements):

    sudo apt-get install -y git curl nginx unzip
    sudo apt-get install -y php7.2-fpm php7.2-cli php7.2-curl php7.2-intl php7.2-json
    sudo apt-get install -y php7.2-intl php7.2-xdebug php7.2-curl php7.2-ldap
    sudo apt-get install -y ffmpeg php-pear php7.2-dev php7.2-mbstring php7.2-zip
    
  4. Install MongoDB Server and Driver

    sudo apt-get install -y mongodb-org
    sudo systemctl enable mongod.service
    sudo systemctl start mongod.service
    sudo pecl install mongodb-1.5.3
    sudo echo "extension=mongodb.so" | sudo tee /etc/php/7.2/mods-available/mongodb.ini
    sudo ln -s /etc/php/7.2/mods-available/mongodb.ini /etc/php/7.2/cli/conf.d/20-mongodb.ini
    sudo ln -s /etc/php/7.2/mods-available/mongodb.ini /etc/php/7.2/fpm/conf.d/20-mongodb.ini
    sudo systemctl restart php7.2-fpm.service
    
  5. Create web directory and give the right permissions:

    sudo mkdir -p /var/www
    sudo adduser `whoami` www-data
    sudo chown `whoami`:www-data -R /var/www
    sudo chmod 0755 -R /var/www
    sudo chmod g+s -R /var/www
    
  6. Download the last version of PuMuKIT:

    git clone https://github.com/campusdomar/PuMuKIT.git /var/www/pumukit
    
  7. Activate the master tag:

    cd /var/www/pumukit
    git checkout master
    
  8. Install composer.

    curl -sS https://getcomposer.org/installer | php
    sudo mv composer.phar /usr/local/bin/composer
    
  9. Install dependencies and provide PuMuKIT basic parameters:

    composer install
    

In case it gives a token error, check the solution in the F.A.Q

  1. Give cache and log directories the right permissions.
  1. Set the "date.timezone" setting in all the php.ini files with your timezone (e.g. Europe/Madrid):

    sudo sed -i "s/;date.timezone =/date.timezone = Europe\/Madrid/g" /etc/php/7.2/cli/php.ini
    sudo sed -i "s/;date.timezone =/date.timezone = Europe\/Madrid/g" /etc/php/7.2/fpm/php.ini
    
  2. Override the 'upload_max_filesize' and 'post_max_size' settings in all the php.ini files to upload bigger files

    sudo sed -i "/post_max_size =/c\post_max_size = 2000M" /etc/php/7.2/cli/php.ini
    sudo sed -i "/upload_max_filesize =/c\upload_max_filesize = 2000M" /etc/php/7.2/cli/php.ini
    sudo sed -i "/post_max_size =/c\post_max_size = 2000M" /etc/php/7.2/fpm/php.ini
    sudo sed -i "/upload_max_filesize =/c\upload_max_filesize = 2000M" /etc/php/7.2/fpm/php.ini
    

NOTE: We recommend a default value of 2G (or 2000M). If you are planning to upload bigger files, change the '2000M' values above to higher ones.

  1. Set "xdebug.max_nesting_level" to "1000" in PHP configuration to stop Xdebug's infinite recursion protection erroneously throwing a fatal error:

    echo "xdebug.max_nesting_level=1000" | sudo tee -a /etc/php/7.2/fpm/conf.d/20-xdebug.ini
    
  2. Add NGINX config file and restart php-fpm and nginx

    sudo cp doc/conf_files/nginx/default /etc/nginx/conf.d/default.conf
    sudo sed -i "s/^user.*/user www-data;/" /etc/nginx/nginx.conf
    sudo systemctl restart php7.2-fpm.service
    sudo systemctl restart  nginx.service
    
  3. Prepare environment (init mongo db, clear cache)

    php bin/console doctrine:mongodb:schema:create
    php bin/console cache:clear
    php bin/console cache:clear --env=prod
    
  4. Create the admin user

    php bin/console fos:user:create admin --super-admin
    
  5. Load default values (tags, broadcasts and roles).

    php bin/console pumukit:init:repo all --force
    
  6. [Optional] Load example data (series and multimedia objects)

    php bin/console pumukit:init:example  --force
    
  7. Restart server

    sudo systemctl restart php7.2-fpm.service
    sudo systemctl restart  nginx.service
    
  8. Connect and enjoy

    • Connect to the frontend here: http://{PuMuKIT-HOST}/
    • Connect to the back-office (Admin UI) with the user created on step 13 here: http://{PuMuKIT-HOST}/admin

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3. Multi-node Installation

In this section we will describe how to install PuMuKIT in a multi server (multi-node) environment. A multi-node deployment of PuMuKIT is usually recommended for real production environments.

On a default single-node installation, the transcoder, the storage of the multimedia files and the database are installed in the same node as PuMuKIT. A different installation can be done. It is possible to set up external nodes to install a transcoder or manage the storage of the multimedia files in a NAS (Network Attached Storage) server.

To perform a multi-node installation of PuMuKIT, first you need to install PuMuKIT in a node according to Single-node Installation on Linux Ubuntu 18.04.

After having a single-node deployment you can improve it with additional nodes to take care of storage and/or trancoding jobs:

4.1. External PuMuKIT-Transcoders

On a default standalone installation, there is only one PuMuKIT transcoder installed in the same node as PuMuKIT core.

One or multiple transcoders can be installed in different nodes. An external transcoder node can be configured with the following recommendations:

  • Ubuntu 18.04 although another operating system that accomplish the following recommendations can be used.
  • 8 CPUs
  • 8 GB RAM
  • 20 GB HDD
  • libav / ffmpeg libraries: the ones you have configured into the app/config/encoder.yml file of your PuMuKIT node.
  • Being in the same network as the PuMuKIT and NAS nodes.

Configure the transcoder node as a web server with nginx or Apache.

Copy the webserver.php file of the PuMuKIT node into the web folder of your transcoder node server directory. For instance, in a default nginx server configuration on an Ubuntu 18.04 server, should be in /usr/share/nginx/html/webserver.php. Change the default user and password of this webserver configuration by opening the file and changing these two lines:

define("USER", "pumukit");
define("PASSWORD", "PUMUKIT");

Give access to the storage system (On PuMuKIT server or External NAS).

Configure the app/config/encoder.yml file of your PuMuKIT node to add the transcoder server in the cpus section. To see all the options to configure, type on your PuMuKIT node and see the cpus section:

cd /path/to/pumukit
php bin/console config:dump-reference pumukit_encoder
    cpus:

        # Prototype
        name:

            # Encoder Hostnames (or IPs)
            host:                 ~ # Required

            # Deprecated since version 2, to be removed in 2.2.
            number:               1

            # Top for the maximum number of concurrent encoding jobs
            max:                  1

            # Type of the encoder host (linux, windows or gstreamer)
            type:                 ~ # One of "linux"; "windows"; "gstreamer"

            # Specifies the user to log in as on the remote encoder host
            user:                 ~

            # Specifies the user to log in as on the remote encoder host
            password:             ~

            # Encoder host description
            description:          ''

            # Valid profiles
            profiles:          
  • name: name of your transcoder server. E.g.: transcoder. Replace the word name with the name you give.
  • host: IP or hostname of your transcoder server
  • max: maximum number of concurrent jobs
  • type: type of the transcoder host
  • user: username defined in the webserver.php file of your transcoder server
  • password: password defined in the webserver.php file of your transcoder server
  • profiles (optional): array of valid profiles. If this parameter exists, the cpu will only accept tasks for the specified profiles.

You can add as many transcoders as you want to the configuration of the encoders of PuMuKIT. Define each transcoder with a different name and add host, max, type, user and password configuration.

4.2. External Storage or NAS (Network Attached Storage) Server

Configure your NAS server to give access to PuMuKIT and transcoder nodes according to:

  • PuMuKIT uploads, inbox and tmp directories. Defaults:

    • pumukit.uploads_dir: '%kernel.root_dir%/../web/uploads'
    • pumukit.inbox: '%kernel.root_dir%/../web/storage/inbox'
    • pumukit.tmp: '%kernel.root_dir%/../web/storage/tmp'
  • Encoders configuration: dir_out parameter of each profile defined in your app/config/encoder.yml configuration file.

PuMuKIT node and transcoder node should mount the NAS server folder where all the multimedia files are shared.

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4. Opencast integration

To add Opencast integration features to the PuMuKIT platform use the Opencast Bundle. The Opencast Bundle is included in PuMuKIT standard installation but it's not activated by default. To activate and configure it, follow the instructions in the Opencast bundle: https://github.com/pumukit/PumukitOpencastBundle/blob/master/Resources/doc/README.md

5. F.A.Q.

Configure max upload filesize

1.- If you get a 413 response status code (request entity too large) and get "client intended to send too large body" in NGINX log. Check the NGINX conf file (/etc/nginx/sites-available/default)

client_max_body_size 2000m;
client_body_buffer_size 128k;

2.- If you get a message like "The file XXXX.avi exceeds your upload_max_filesize ini directive". Check the php-fpm conf file (/etc/php/7.2/fpm/php.ini)

upload_max_filesize = 2000M
post_max_size = 2000M

3.- If you get a 504 "Gateway Time-out", change the php/7.2-fpm configuration. Chose the same value for request_terminate_timeout in /etc/php/7.2/fpm/pool.d/www.conf and max_execution_time in /etc/php/7.2/fmp/php.inifiles. For example:

request_terminate_timeout = 30
  • /etc/php/7.2/fpm/php.ini
max_execution_time = 30
  • Restart php/7.2-fpm and NGINX:
sudo service php7.2-fpm restart
sudo service ningx restart

Setting up Permissions?

Enable MongoDB text index

Use MongoDB 2.6 or upper, the text search feature is enabled by default. In Ubuntu 18.04 you can install the last version of MongoDB using the next documentation:

#####Add GitHub token

In case the php composer.phar install asks for a token with a message like:

Could not fetch https://api.github.com/repos/VENDOR_NAME/NAME_Bundle/zipball/HASH_CODE, please create a GitHub OAuth token to go over the API rate limit
Head to https://github.com/settings/tokens/new?scopes=repo&description=Composer+on+HOST_ID+DATE+TIME
to retrieve a token. It will be stored in "/home/USER/.composer/auth.json" for future use by Composer.
Token (hidden):

There is a rate limit on GitHub's API for downloading repos. In case of reaching that limit, Composer prompts the above message asking for authentication to download a repo.

It is necessary to create a token and add it to composer.

1.- Create an OAuth token on GitHub. Follow the instructions on GitHub Help page.

2.- Add the token to the configuration running:

cd /var/www/pumukit
php composer.phar config -g github-oauth.github.com <oauthtoken>

Now Composer should install/update without asking for authentication.

Not allowed to access app_dev.php via web

If you get this message when trying to access http://{PuMuKIT-HOST}/app_dev.php:

You are not allowed to access this file. Check app_dev.php for more information.

Comment the following code in web/app_dev.php file:

/*
// This check prevents access to debug front controllers that are deployed by accident to production servers.
// Feel free to remove this, extend it, or make something more sophisticated.
if (isset($_SERVER['HTTP_CLIENT_IP']) || isset($_SERVER['HTTP_X_FORWARDED_FOR']) || !(in_array(@$_SERVER['REMOTE_ADDR'], array('127.0.0.1', 'fe80::1', '::1')) || php_sapi_name() === 'cli-server')
) {
header('HTTP/1.0 403 Forbidden');
exit('You are not allowed to access this file. Check '.basename(FILE).' for more information.');
}
*/

Not allowed to access config.php via web

If you get this message when trying to access http://{PuMuKIT-HOST}/config.php:

This script is only accessible from localhost.

Comment the following code in web/config.php file:

/*
if (!in_array(@$_SERVER['REMOTE_ADDR'], array(
    '127.0.0.1',
    '::1',
))) {
    header('HTTP/1.0 403 Forbidden');
    exit('This script is only accessible from localhost.');
}
*/

Internal Server Error (500) when searching a series or a multimedia object

The mongodb text index is needed for searching. And this error is produced because the text index is not created:

Cannot run command count(): error processing query: ns=pumukit___.MultimediaObject limit=0 skip=0
...
planner returned error: need exactly one text index for $text query

To generate the index execute the following command:

php bin/console doctrine:mongodb:schema:create --index

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