The MLN Project

What is MLN?

MLN (Manage Large Networks) is a virtual machine administration tool designed to build and run virtual machine networks based on Xen and User-Mode Linux. It is ideal for creating virtual network labs for education, testing, hosting or simply playing around with Linux.

Get the latest MLN release:

wget http://mln.sourceforge.net/files/mln-latest.tar.gz

tar xzf mln-latest.tar.gz; cd mln-latest

./mln setup

cp mln /usr/local/bin

News

12/11 - 2007
The long-awaited release of MLN 0.83 is finally out, bringing with it some important improvements:

• HVM Xen support
• Improved installer
• Live migration of entire networks
• The filepath keyword to store vm filesystems in special locations

Thanks to Ingard M and Matt D for their effort on this one. This release is reccomended for Xen users. here

14/12 - 2006
Some confusion about LVM on non-debian distributions promted this little bugfix. here.

07/12 - 2006
LISA 06 slides can be downloaded here.
The demos are here as well: mln-demo1.avi, mln-demo2.avi

01/12 - 2006
In time for the USENIX/LISA conference, a batch of bugfixes. Download the newest version here.

31/08 - 2006
A beta release of the 0.82 version is now available here: mln-0.82b16.tar.gz (updated on 04/09)
One should be able to use it instead of the 0.81 release. Most of the work left is in documentation. Improvements of this release:

• A MLN daemon function which can be used to manage large projects that span several servers. You can start, stop, build, upgrade and remove from one point and it is enforced on all involved servers. See the manual for more info.
• A status command for the polling of status information from MLN daemons
• Selected plugins are now released with the tarball
• mln stop -p project -w i can now wait for all hosts in a project to stop before it returns
• Xen projects can be frozen in mid-air and restarted again:
  

  
  mln stop -p xenproject -S
  
  mln start -p xenproject
  
  

  Note, that the project needs to have been built using this or a later version.
• mln reconfigure will not rebuild the project, but re-create the start and stop script as well as re-do the internal configuration of a VM.

27/04
A minor version update with bugfixes: 0.81.1 .. and now even 0.81.2

20/4 - 2006

• MLN tutorial at Technology Trasfer Day at Oslo University College (Norway)
  Read more on http://project.iu.hio.no/ttday.html
• The slides from the tutorial.
• In time for the tutorial some bugs have been removed and the new version is: 0.81
• In order to ease install of Xen, Matt Disney has written an shellscript called xenify_0.2.sh that installs Xen 3.0.2 on an Ubuntu Dapper or Debian Sarge install.

2/4 - 2006
I am pleased to announce version 0.80 of mln with the following improvements:

• Support for Xen as well as User-Mode Linux. Assuming you have Xen 3.0.1 or later installed, you can make a host run Xen by using the xen keyword in a host.
• A new plugin infrastructure for easy expansion of the MLN syntax and features
• A new installer that configures MLN for a single user or for all users on a host
• Support for LVM as disks for both Xen and UML
• Rewrite of the internal data-structure
• Preliminary support for distributed build accross a network
• Additional templates based on Ubuntu

16/05 - 2005
Quick feedback from users enabled this little update: 0.74.3 is recommended for all.

11/05 - 2005
We are proud to announce that version 0.74 of MLN is available for download. It contains a host of bugfixes and also a range of usability features. Be sure to use the latest templates.

07/11
It has been a while, but another release candidate is out: 0.73rc3.
New features are:

• Support for the swap keyword
  
• A new template, blimp, which contains a wiki, request tracker and the drupal weblog system.

25/09
A release candidate for version 0.73 is now available. The output is still a bit rough. New features include:

• COW support!
• A clean command to remove residual sockets after hard UML takedowns
• You can now choose starting application (xterm | screen ) at boot time instead of just build-time.
• Numerous bugfixes.
• Non-root building is now the default build mode.
• It is possible to move projects with the start and stop scripts still woriking.

30/07 2004
The latest revision of mln, 0.72r1 is now out. If contains a few bugfixes and no new features.

15/07 2004
A new revision of version 0.72 is out due to a bug in the user/group ownership of switches.

11/07 2004
We are proud to announce the release of MLN version 0.72 with numerous usability fixes and new features. Main changes from the previous version are:

• "mln register_template" for manually created/downloaded templates
• "mln status" shows what hosts are running
• RedHat templates are now supported
• Support for nice values
• Support for halting machines instantly
• owner,sudo, group ownerships on hosts
• owner,sudo, group ownerships on switches
• Impossible to use smaller size then the template's
• list_templates shows sizes too
• Start and stop scripts can create/take down tun/tap devices
• Start and stop scripts handle unforseen cases better

10/05 2004
mln-0.71 is out! It is now possible to download templates from sourceforge too. We hope you'll have great fun with it.

13/4 2004
We have just written this very webpage. The next task is to bring the documentation online.

Quick Link

http://sourceforge.net/projects/mln