Monthly Archives: January 2011

Openmeetings 1.6 RC1 VMWare appliance (using Ubuntu Server 10.04 LTS)

I’ve made a new VMWare image running Openmeetings, V1.6 RC1, available�here(the previous one is still available�here). There is also a�how-to�that I made during the VMWare image creation, if you are interested.�

The operating system is Ubuntu 10.04 LTS Server Edition, the login credentials are administrator / password. The same username and password was used for the Openmeetings login. MySQL root password is password. Openmeetings database user credentials are openmeetings / password. All functions are configured, including OpenOffice server for document conversion.

When starting the VM, VMWare will ask if the VM was moved or copied. I suggest to choose ‘moved’, if you choose ‘copied’, VMWare will create a new MAC Address for the network interface and the VM will start with no network interface (it has to be manually reconfigured to match the new MAC Address)

The VM is using DHCP (you will have to execute ifconfig to know its IP address and have a DHCP server running in your network). If you need to configure a fixed IP address you have to manually reconfigure the network interface.

After having the image running, use the following URL to access it: http://[ip address]:5080/openmeetings

Login using the credentials administrator / password

Choose the tab “Administration” and then “Configuration”. Now configure at least the SMTP server, port, system email address, email username and email userpass to enable the email notifications.�

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How to install Openmeetings 1.6 rc1 on Ubuntu Server 10.04 LTS

This how-to is based on�this�how-to written in�Spanish�for the 1.5 rc1 openmeetings version.

First we need to add the partner repositories, editing the sources.list file and removing the comments for the partner lines

sudo nano /etc/apt/sources.list

sudo apt-get update

Then install the necessary packages

sudo apt-get install -y java-package sun-java6-bin sun-java6-jdk sun-java6-jre mysql-server

sudo apt-get install -y imagemagick gs-gpl libart-2.0-2 libt1-5 zip unzip bzip2 subversion git-core checkinstall

sudo apt-get install -y yasm texi2html libfaac-dev libfaad-dev libmp3lame-dev libsdl1.2-dev libx11-dev libxfixes-dev libxvidcore-dev zlib1g-dev libogg-dev sox libvorbis0a libvorbis-dev libgsm1 libgsm1-dev libfaad2 flvtool2 lame swftools

Now, for the ffmpeg, it is necessary to download, compile and install it:


tar -zxvf ffmpeg-0.6.1.tar.gz

cd ffmpeg-0.6.1/

./configure –enable-libmp3lame –enable-libxvid –enable-libvorbis –enable-libgsm –enable-libfaad –enable-libfaac –enable-gpl –enable-nonfree


sudo checkinstall

Now that all the dependencies for Openmeetings are met, let�s start the Openmeetings installation.

Get openmeetings (this includes the Red5 server):


Extract it and move it to /opt


sudo mv red5 /opt/

Change owner to nobody

sudo chown -R nobody: /opt/red5

Make all the scrips executable

sudo chmod +x /opt/red5/*.sh

sudo chmod +x /opt/red5/webapps/openmeetings/jod/*.sh

Now let�s create the startup script for openmeetings:

sudo nano /etc/init.d/red5

Paste the following code:

#! /bin/sh


# red5 red5 initscript


# Author: Simon Eisenmann .


set -e


DESC=”Red5 flash streaming server”






# Gracefully exit if the package has been removed.

test -x $DAEMON || exit 0

# Read config file if it is present.

if [ -r /etc/default/$NAME ]


����������� . /etc/default/$NAME



# Function that starts the daemon/service.


d_start() {

����������� start-stop-daemon –start -c nobody –pidfile $PIDFILE –chdir $RED5_HOME –background –make-pidfile –exec $DAEMON



# Function that stops the daemon/service.


d_stop() {

����������� start-stop-daemon –stop –quiet –pidfile $PIDFILE –name java

����������� rm -f $PIDFILE


case “$1” in

����������� start)

���echo -n “Starting $DESC: $NAME”


���echo “.”

����������� ;;

����������� stop)

���echo -n “Stopping $DESC: $NAME”

����������� d_stop

���echo “.”

����������� ;;

����������� restart|force-reload)

���echo -n “Restarting $DESC: $NAME”


���sleep 1


���echo “.”

����������� ;;

����������� *)

���echo “Usage: $SCRIPTNAME {start|stop|restart|force-reload}” >&2

���exit 1

����������� ;;


exit 0

exit 0

(above code available�here)

Now the same thing for openoffice startup script:

sudo nano /etc/init.d/openoffice

Paste the following code:


# headless server script


# chkconfig: 2345 80 30

# description: headless openoffice server script

# processname: openoffice


# Author: Vic Vijayakumar

# Modified by Federico Ch. Tomasczik





set -e

����������� case “$1” in

����������� start)

����������� if [ -f $PIDFILE ]; then

����������� echo “OpenOffice headless server has already started.”

����������� sleep 5

����������� exit

����������� fi

����������� echo “Starting OpenOffice headless server”

����������� $SOFFICE_PATH -headless -nologo -nofirststartwizard -accept=”socket,host=,port=8100;urp” & > /dev/null 2>&1

����������� touch $PIDFILE

����������� ;;

����������� stop)

����������� if [ -f $PIDFILE ]; then

����������� echo “Stopping OpenOffice headless server.”

����������� killall -9 soffice && killall -9 soffice.bin

����������� rm -f $PIDFILE

����������� exit

����������� fi

����������� echo “Openoffice headless server is not running.”

����������� exit

����������� ;;

����������� *)

����������� echo “Usage: $0 {start|stop}”

����������� exit 1


exit 0

(above code available�here)�

Make both scripts executable:

sudo chmod +x /etc/init.d/red5

sudo chmod +x /etc/init.d/openoffice

Now let�s make both services start automatically:

sudo update-rc.d red5 defaults

sudo update-rc.d openoffice defaults

Almost done, now to create openmeetings database (we have created a database user named openmeetings with the password password):

echo “CREATE USER openmeetings@localhost;” | mysql -u root -p

echo “CREATE DATABASE openmeetings DEFAULT CHARACTER SET ‘utf8’;” | mysql -u root -p

echo “GRANT ALL PRIVILEGES ON openmeetings.* TO ‘openmeetings’@’localhost’ IDENTIFIED BY ‘password’ WITH GRANT OPTION;” | mysql -u root -p

echo “FLUSH PRIVILEGES;” | mysql -u root -p

And now configure openmeetings to use the database user created above:

sudo nano /opt/red5/webapps/openmeetings/conf/hibernate.cfg.xml

In the User / Password section, configure the correct database username (openmeetings) and password (password)�

Now start openmeetings and openoffice:

sudo /etc/init.d/red5 start

sudo /etc/init.d/openoffice start

Go to a browser and point to the following link:

http://[server ip]:5080/openmeetings/install

Press �Continue with step 1�

Then, fill the following fields:




User time zone


Default language

Then, finally click on the �Install� button, and that�s it!�

Please post your comments and�suggestions�

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Install low latency kernel on Ubuntu (Studio) 10.10 (Maverick)

After upgrading my Ubuntu from 10.04 to 10.10 I’ve noticed that there was no realtime or low latency kernel for it�Cry

The standard kernel behaves very well (for a standard kernel at least) with audio applications, at least up to what I tested – hydrogen, rackarrack (even with heavy processing effects) and 2 instances of ZynAddSubFx. �But I want to test Maverick with audio applications at least with a Low Latency kernel, so I used google, and found some references for how to do it.�Unfortunately�they link to unavailable kernel versions. I’ve also asked in Ubuntu Studio mailing list and�Mike Holstein said that he used the process described in the following link:

This was one of the links I have found googling, and has the problem of broken link (the kernels referenced are not available anymore). So to make the story short, I’ve searched for newer kernel packages and headers (these are for Natty (11.04) but work on Maverick), and this is what I have done to have a low latency kernel installed in my Ubuntu Maverick (10.10) home studio PC (AMD64):

First, download the packages (headers from a Ubuntu Natty mirror, kernels from Alessio PPA):�




Then, install the packages:

sudo dpkg -i�linux-headers-2.6.37-12_2.6.37-12.26_all.deb

sudo dpkg -i�linux-headers-2.6.37-12-lowlatency_2.6.37-12.26~ppa3_amd64.deb

sudo dpkg -i�linux-image-2.6.37-12-lowlatency_2.6.37-12.26~ppa3_amd64.deb

And Voil�, a working low latency kernel on Maverick�Tongue out

For i386 architectures (didn’t test it), you can use the following packages instead:

PAE (more than 4GB RAM):

Non PAE:�

Now it is time to test this new kernel, but this will be another article. Please post any comment or correction, as I said I didn’t test the i386 platform, so you could post your results. I want to thank to Mike for its help in the Ubuntu Studio mailing list (and all the other users from Ubuntu Studio mailinglist that gave me suggestions about this) and Alessio for its�excellent�work with the low latency and realtime kernels.
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