Moodle VPL Server Setup

--D. Thiebaut (talk) 16:15, 10 June 2014 (EDT)

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This tutorial illustrates how to setup a Ubuntu server for Moodle and VPL. The main Ubuntu server runs two virtual servers, one a LAMP server that hosts Moodle, the other a regular Ubuntu server used for the jail-system required by VPL.

Hardware Server Setup

Motherboard/Processor/Video

• ASUS M5A97 R2.0 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard ($84.99)
• Corsair Vengeance 16GB (2x8GB) DDR3 1600 MHz (PC3 12800) Desktop Memory (CMZ16GX3M2A1600C10) ($120.22)
• AMD FX-8150 8-Core Black Edition Processor Socket AM3+ FD8150FRGUBOX ($175)

Server Software Setup

• setup Server hadoop0 (Legacy name, call yours with your favorite name) as Ubuntu 14.04 server with LAMP + OpenSSH services.
• Install as root some required packages

apt-get install gparted xorg gnome-core gnome-system-tools gnome-app-install
apt-get install ddclient (optional, but will allow you to ssh to your server using a domain name rather than an Ip address)
apt-get install emacs24
apt-get install git
apt-get install phpmyadmin

• Install virtualbox: follow directions from http://www.n00bsonubuntu.net/content/install-virtualbox-ubuntu-14-04/:

 wget http://releases.ubuntu.com/trusty/ubuntu-14.04-server-amd64.iso
 wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -
 sudo apt-get update && sudo apt-get install virtualbox-4.3 -y
 sudo apt-get selfupdate
 sudo apt-get update
 wget http://download.virtualbox.org/virtualbox/4.3.12/virtualbox-4.3_4.3.12-93733~Ubuntu~raring_amd64.deb
 wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -
 sudo apt-get update && sudo apt-get install virtualbox-4.3 -y
 wget http://download.virtualbox.org/virtualbox/4.3.10/Oracle_VM_VirtualBox_Extension_Pack-4.3.10-93012.vbox-extpack
 adduser yourName vboxusers
  

• copy Oracle_VM_VirtualBox_Extension_Pack-4.3.10-93012.vbox-extpack to you home directory and double-click on it to install it.

 mv Oracle_VM_VirtualBox_Extension_Pack-4.3.10-93012.vbox-extpack  /tmp

• Put Ubuntu Server iso in dvd
• Start virtualbox on your server
• create a new VM
• name moodleServer (or whatever name you want to name it)
• 4 GB Ram
• 20 GB Hard disk
• Bridged NAT network
• user yourUserName/yourPassword
• set the root password for mysql
• request LAMP and Open-SSH services
• apt-get some applications when first-time in the system:
  • ddclient: name it with your favorite name
  • phpmyadmin
  • emacs24
  • git

Install/Setup Moodle

• Reference: http://docs.moodle.org/23/en/Installing_Moodle
• setup php curl:

sudo apt-get install curl libcurl3 libcurl3-dev php5-curl

• get and install moodle

sudo -i
git clone -b MOODLE_27_STABLE git://git.moodle.org/moodle.git 
cd /var/www/html
mv /root/moodle .
chown -R root moodle
chmod -R 0755 moodle/
find moodle -type f -exec chmod 0644 {} \;

• setup moodledata directory:

 sudo -i
 mkdir /usr/local/moodledata
 chmod 777 /usr/local/moodledata

• Mysql

Database on moodleServer: moodle, collation utf8_general_ci user: mooduser, localhost, password 1ntheCSm00dle Setup Moodle (follow directions from http://docs.moodle.org/23/en/Installing_Moodle admin account: admin admin password: 1ntheCSm00dle type value, press Enter to use default value (en)

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Data directories permission

type value, press Enter to use default value (2777)

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Web address

type value

http://moodleServer.dyndns.org/moodle

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Data directory

type value, press Enter to use default value (/var/www/moodledata)

/usr/local/moodledata

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Choose database driver

mysqli 
mariadb 

type value, press Enter to use default value (mysqli)

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Database host

type value, press Enter to use default value (localhost)

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Database name

type value, press Enter to use default value (moodle)

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Tables prefix

type value, press Enter to use default value (mdl_)

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Database port

type value, press Enter to use default value ()

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Unix socket

type value, press Enter to use default value ()

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Database user

type value, press Enter to use default value (root)

mooduser

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Database password

type value

1ntheCSm00dle

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Full site name

type value

CompSci Moodle

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Short name for site (eg single word)

type value

CSMoodle

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Admin account username

type value, press Enter to use default value (admin)

admin

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New admin user password

type value

1ntheCSm00dle

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Copyright notice

Moodle - Modular Object-Oriented Dynamic Learning Environment Copyright (C) 1999 onwards Martin Dougiamas (http://moodle.com)

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the Moodle License information page for full details: http://docs.moodle.org/dev/License

Have you read these conditions and understood them? type y (means yes) or n (means no)

y

[edit]Install/Setup VPL Module

[edit]VPL Module Download from http://vpl.dis.ulpgc.es/index.php/en/download sudo unzip module in /var/www/moodle/mod Go to notification in Admin Menu of moodle, and click on update database. ==> Success! [edit]VPL Jail System Follow the directions at http://vpl.dis.ulpgc.es/index.php/en/documentation/75-how-to-install-vpl-jail-system sudo, go to ~/Downloads and download vpl_jail_system-latest.tar.gz sudo -i cd /Users/dominique/Downloads wget vpl_jail_system-latest.tar.gz tar -xzvf vpl_jail_system-latest.tar.gz cd vpl_jail_system-2.0 ./install-vpl-sh ( yes to certificate) ( yes to development software) ( no to extra development software) ( no to remove apache2) Got some errors, ServerName and not able to bind... Turns out VPL listens to port 80 and 443, which conflicts with Apache2. No wonder it asks if apache should be removed during installation. I guess it's because VPL could be installed on a server that is not a LAMP server... So, edited several files: /etc/hosts: 127.0.0.1 localhost 127.0.1.1 moodleServer

1. The following lines are desirable for IPv6 capable hosts

1 localhost ip6-localhost ip6-loopback

ff02::1 ip6-allnodes ff02::2 ip6-allrouters

/etc/apache2/apache2.conf (add at end of file): ServerName localhost

/etc/apache2/ports.conf

1. If you just change the port or add more ports here, you will likely also
2. have to change the VirtualHost statement in
3. /etc/apache2/sites-enabled/000-default.conf

Listen 80 443

reboot ==> now apache works, and can loggin to Moodle [edit]June 4 2014

figured out that VPL jail should be its own virtual server! [edit]Create new Virtual Server: VPLServer

created new Ubuntu 14.04 virtual server on Hadoop0 VPLServer dominique/sevenseas... bridged Network install emacs install VPL server

 wget http://vpl.dis.ulpgc.es/releases/vpl_jail_system-2.0.1.tar.gz

select no for wildcard certificates install ddclient (current IP=131.229.102.20) setup vplserver.dyndns.org as name of machine reboot start/stop/start vpl (won't work), reboot and start vpl, and it works!

 sudo reboot
 sudo service vpl-jail-system start

Test. Plug these URL in browser and get OK message in blank page: http://vplserver.dyndns.org/OK https://vplserver.dyndns.org/OK [edit]Update Moodle to use VPLServer

Switch to moodleServer where Moodle is installed login as admin (in the mood password) go to http://moodleServer.dyndns.org/moodle/admin/search.php?query=vpl Set Execution Server List to http://vplserver.dyndns.org

MoodleVPLServerLine.png

[edit]Error: PHP needs XMLRPC

To test if Moodle sees the VPL server, go to a VPL activity created in a course, and select it. Open it There should be a VPL Administration menu in Moodle opening up. Pick Advanced Settings and Check execution servers to see what happens. I first got PHP needs CMLRPC error, even for the default VPL server set in Spain. Solution: install php5-xmlrpc on moodleServer and vplserver sudo apt-get install php5-xmlrpc

Then repeat the test and see the result of Check execution servers in Moodle:

MoodleVPLServerChecked.png

[edit]June 5, 2014

[edit]Backup

create a backup of the /home/dominique with deja-dup. Just start the "Backup" black vault app in the favorites. output folder is /media/1_5TB/Backups/deja-dup/ Backup performed every day Used Clonezilla to make a duplicate of 1TB boot disk. Now second 1TB contains exact copy and can be booted from. Disks labeled inside the case (Boot/Backup). The backup disk is off line and off power for now. The boot disk has ID WD-WCAU4C220157 The backup disk has ID WD-WCAU4C208949 Used the GUI, but can run this command from Clonezilla shell to go faster:

 /usr/sbin/ocs-onthefly -g auto -e1 auto -e2 -j2 -r -f sdb -t sdc

[edit]