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 {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 .....