Setup lxd cluster for megatest

I setup 3 container "boxes" - pablo, ruby, ash

• shared disk space at /lxd-shared
• picked pablo to serve vnc
• put containers on home network to make things easy

install lxd - loosely followed this

put containers on home LAN- followed this procedure

host# mkdir /lxd-shared

host# chown 100000:100000 /lxd-shared

host# chmod 777 /lxd-shared

host# xc remote add images images.linuxcontainers.org

host# lxc launch images:ubuntu/xenial/amd64 ruby

host# lxc launch images:ubuntu/xenial/amd64 pablo

host# lxc launch images:ubuntu/xenial/amd64 ash

setup shared space across containers, mounted from host fs

mkdir /lxd-shared

• my root disk is bigly

  chmod 777 /lxd-shared

  host# lxc config device add ruby sharedtmp disk path=/lxd-shared source=/lxd-shared

  host# lxc config device add ash sharedtmp disk path=/lxd-shared source=/lxd-shared

  host# lxc config device add pablo sharedtmp disk path=/lxd-shared source=/lxd-shared

Setup containers

• Foreach container :

  host# lxc exec container /bin/bash

  container# apt update

  container# apt upgrade

  container# apt-get install -y openssh-server htop ncurses-term fossil make

  container# service ssh start

  container# addgroup megatest

  container# adduser --ingroup megatest mtuser

  container# apt-get install -y libreadline-dev

  container# apt-get install -y libwebkitgtk-dev libfreetype6-dev libx11-dev libxpm-dev libxmu-dev libxft-dev libgtk2.0-dev

  container# libgl1-mesa-dev libglu1-mesa-dev libpangox-1.0-dev

  container# bison libwebkitgtk-3.0-dev

  container# apt-get install -y libmotif-common

  container# apt-get install -y uuid-dev

setup ssh host keys across mtuser

host# lxc exec container1 /bin/bash

container1# su - mtuser

% ssh-keygen

• leave password blank, take all defaults

  % cat .ssh/id_rsa.pub > .ssh/authorized_keys

  % chmod go= .ssh/authorized_keys

  % tar czvf /lxd-shared/mtuser-ssh.tgz .ssh

  % ssh container2 tar xzvf /lxd-shared/mtuser-ssh.tgz

  % ssh container3 tar xzvf /lxd-shared/mtuser-ssh.tgz

• ssh between all pairs to initialize host keys. should be passwordless now.

pick a container and setup X / vnc

container# apt-install vnc4server xfce4

container# su -c mtuser

% vncpasswd

• put following in .vnc/xstartup

  #!/bin/sh
  
  # Uncomment the following two lines for normal desktop:
  # unset SESSION\_MANAGER
  # exec /etc/X11/xinit/xinitrc
  
  #[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
  #[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
  #xsetroot -solid grey
  #vncconfig -iconic &
  #x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
  #x-window-manager &
  
  #!/bin/sh
  unset SESSION\_MANAGER
  unset DBUS\_SESSION\_BUS\_ADDRESS
  startxfce4 &
  
  [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
  [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
  xsetroot -solid grey
  vncconfig -iconic &
  

mtuser% vncserver -geometry 1366x746 -depth 24

fix consternating issue breaking tab completion working in any term:

• edit ~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml

• find the line

  <property name="&lt;Super&gt;Tab" type="string" value="switch\_window\_key"/>
  

• and change it to

  <property name="&lt;Super&gt;Tab" type="empty"/>
  

• restart vnc (vncserver -stop :1 ;

start a vnc session (so iup works)

from home network, use vnc client to connect to container:1

• setup shop in /lxd-share, eg:

  % cd /lxd-share % fossil clone http://kiatoa.com/fossils/megatest megatest.fossil .....