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Liquid Galaxy Installation

Ismael edited this page Apr 22, 2015 · 19 revisions
  • Install Ubuntu Alternate CD (I used 12.04 alternate):

  • Set drive as ext4 with the following options

    • typical usage = news
  • Set names

    • Machine name (lgX) lg1, lg2, lg3...
    • Real/complete name = Liquid Galaxy (or whatever you want)
    • Username = lg
    • Group (if asked) = galaxy (or whatever you want)
    • Resulting name in shell must be > lg@lgX
  • Finish Installation

  • Label filesystems (OPTIONAL: IF YOU WANT TO CLONE)

  • “sudo fdisk -l” to know the name of the ext4 and swap partitions

  • sudo e2label /dev/sdaX “drive” (where sdaX is the ext4 partition)

  • sudo swaplabel /dev/sdaY -L swaplg (where sdaY is the swap partition)

  • sudo gedit /etc/fstab

    • Change the UUID with LABEL=$label for every partition
      • LABEL=drive
      • LABEL=swaplg
  • Configure eth0 network if not DHCP (configure as needed, configure the IP range pointing to the proxyPC as a firewall if there is any, or just the same network as the router the LG is connected to)

  • (Network of the proxyPC)

  • Gateway = (proxyPC IP)

  • DNS =

  • Update ubuntu

  • sudo apt-get update

  • sudo apt-get upgrade

  • Use update manager


  • Install graphics drivers


  • Install needed applications

  • sudo apt-get install git chromium-browser nautilus

  • Install Google Earth



  • Check out Liquid Galaxy Files

  • as user: git clone

  • Execute as root

  • COPY FILES (use sudo nautilus and make sure to copy as root, for example: using 2 windows of nautilus with root) [SOURCE -> DEST]

    • asherat666-g-liquidgalaxy/earth -> /home/lg/
    • asherat666-g-liquidgalaxy/gnu_linux/home/lg/* -> /home/lg
    • Edit files and folders inside /home/lg/dotfiles/* to put a “.” ahead (to hide file)
      • /home/lg/dotfiles/* -> /home/lg
    • asherat666-g-liquidgalaxy/gnu_linux/[etc,patches,sbin] -> /
  • Execute as root

  • Configure SSH

  • FIRST NODE INSTALLED: Create new ssh keys by executing tools/ as root (Blank passphrases)

  • OTHER NODES: Copy the ssh folders from the ssh-configured node to the other nodes as root:

    • /etc/ssh
    • ~/.ssh
    • /root/.ssh
  • Execute as root

  • Edit earth/builds/latest/googleearth as root and add the next line just before the last line of the file.

    export LC_NUMERIC=en_US.UTF-8

  • edit earth/scripts/ (if needed)

  • Edit the next line's screen size or delete it enterely.

    • (DISPLAY=:0 /usr/bin/xdotool mousemove -screen 0 1910 1190) [depending on LG screen's setup]
  • Hide Left Panel


    • System Settings -> Appearance -> Behaviour
  • Change Brightness & Lock to not lock the screen

  • Add the next lines to /etc/X11/xorg.conf to force awake status:

Section "ServerFlags"
Option "blanktime" "0"
Option "standbytime" "0"
Option "suspendtime" "0"
Option "offtime" "0"

  • Change galaxy distribution: /home/lg/etc/shell.conf & /home/lg/personavars.txt (if needed)
  • Set to execute startup-script at login
  • Open Apps at login
  • Add: bash /home/lg/bin/
  • [Clone drive|liquid-galaxy-installation#clone-drive]
  • If master -> Master additional configuration
  • Personalize PC’s
  • Execute /home/lg/bin/ X as root, where X is the machine number)
  • Master = 1
  • Slaves are set in clockwise (lg4 lg5 lg1 lg2 lg3)
  • Reboot

Clone Drive

  • Start machines to clone with LiveCD
  • (Receiving) Rx machine - the one where the clone goes to
  • sudo chmod 777 /dev/sda
  • Install Pipe viewer
  • netcat -l -p 4778 | pv | dd of=/dev/sda
  • (Transmissor) Tx machine - the one to be cloned
  • chmod 777 /dev/sda
  • dd if=/dev/sda | netcat 192.168.0.X 4778 (use for broadcast)
  • Edit /etc/udev/rules/70-persistent-net.rules and delete what's inside to avoid having duplicated eth0

Master additional configuration

  • apt-get install php5 php5-cgi libapache2-mod-php5
  • /* (ADDITIONAL and NOT MANDATORY) sudo apt-get install librsvg2-bin (.svg) build-essential (crear .deb) graphicsmagick-imagemagick-compat (lg-anim) */
  • Install SpaceNavigator
  • Linux: Use NO DRIVERS. It should be running fine!
  • If it doesn’t work, try to edit driver.ini to erase the sensitivity parameters
  • You may want to do it permanently, so edit the drivers_template
  • If it still doesn’t work configure Google Earth to accept external cursors
  • (OPTIONAL) Install MultiBoxing to control all computers with the same mouse+keyboard
  • edit /etc/iptables.conf to add the port 24800
  • use my file in GDrive /etc/synergy.conf (OPTIONAL)
  • Install php-interface
  • Copy php-interface or php-interface-benchmarking in /var/www
  • Execute "chown root:root /home/lg/chown_tmp_query; chmod +s /home/lg/chown_tmp_query" as root


Liquid Galaxy is waiting for 3 signals before logging into Ubuntu: have an IP, personavars.txt exists, Squid is on If by some reason the Liquid Galaxy doesn't start, you can force it by sending "initctl emit galaxy-ok" as root. This may come in handy when you moved your LG and your network config doesn't work anymore.