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

These are rough notes detailing the installation of two virtual Ubuntu servers on a Hardware Ubuntu 14.04 server. The notes are intended to provide general guidelines, and not precise step-by-step instructions. 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 the Virtual Programming Lab module of Moodle (VPL).

Versions

Ubuntu 14.04
Moodle Version 2.7 + (Build: 20140529)
Virtual Programming Lab (VPL) Version 3.0.1. VPL is a Moodle module that can be found on this page.

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)

Main-Server 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 yourLoginName 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

Moodle Server Setup

create a new VM as a Ubuntu 14.04 server
name it 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 (same comment as before. Useful if your Ips change from time to time)
- phpmyadmin
- emacs24
- git
- php5-xmlrpc

For installation, follow 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 typeYourPasswordHere

Setup Moodle (follow directions from http://docs.moodle.org/23/en/Installing_Moodle

admin account: admin
admin password: typeYourPasswordHere
type value, press Enter to use default value (en)
: 
-------------------------------------------------------------------------------
== Data directories permission ==
type value, press Enter to use default value (2777)
: 
-------------------------------------------------------------------------------
== Web address ==
type value
: http://moodleServer.your.Domain.Name/moodle
------------------------------------------------------------------------------- 
== Data directory ==
type value, press Enter to use default value (/var/www/moodledata)
: /usr/local/moodledata
-------------------------------------------------------------------------------
== Choose database driver ==
mysqli 
mariadb 
type value, press Enter to use default value (mysqli)
: 
-------------------------------------------------------------------------------
== Database host ==
type value, press Enter to use default value (localhost)
: 
-------------------------------------------------------------------------------
== Database name ==
type value, press Enter to use default value (moodle)
: 
-------------------------------------------------------------------------------
== Tables prefix ==
type value, press Enter to use default value (mdl_)
: 
-------------------------------------------------------------------------------
== Database port ==
type value, press Enter to use default value ()
: 
-------------------------------------------------------------------------------
== Unix socket ==
type value, press Enter to use default value ()
: 
-------------------------------------------------------------------------------
== Database user ==
type value, press Enter to use default value (root)
: mooduser
-------------------------------------------------------------------------------
== Database password ==
type value
: typeYourPasswordHere
-------------------------------------------------------------------------------
== Full site name ==
type value
: CompSci Moodle
-------------------------------------------------------------------------------
== Short name for site (eg single word) ==
type value
: CSMoodle
-------------------------------------------------------------------------------
== Admin account username ==
type value, press Enter to use default value (admin)
: admin
-------------------------------------------------------------------------------
== New admin user password ==
type value
: typePasswordHere
-------------------------------------------------------------------------------
== 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

Install/Setup 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!

Install VPL Jail System

On main server create a second VM as Ubuntu Server 14.04
Name it vplServer
Only install OpenSSH services on it.
select bridged network for network
apt-get several packages

apt-get install emacs24
apt-get install ntp
apt-get install php5-xmlrpc

install VPL jail 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.your.domain.name as name of machine
reboot

  sudo reboot

then restart vpl-jail system

sudo service vpl-jail-system start

Test. Plug these URL in browser and get OK message in blank page:

http://vplserver.your.domain.name/OK
https://vplserver.your.domain.name/OK

Make Moodle Server Aware of VPL Server

Switch to moodleServer where Moodle is installed
login as admin and go to http://moodleServer.your.domain.name/moodle/admin/search.php?query=vpl
Set Execution Server List to http://vplserver.your.domain.name

=Last Minute

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]

Moodle VPL Server Setup

Contents

Versions

Hardware Server Setup

Motherboard/Processor/Video

Main-Server Setup

Moodle Server Setup

Install/Setup VPL Module

Install VPL Jail System

Make Moodle Server Aware of VPL Server

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