LXD

sudo add-apt-repository --yes ppa:ubuntu-lxc/lxd-stable
sudo apt update
sudo apt install lxd

# create zfs dataset on pool rpool
zfs create rpool/lxd

# create lxd storage called zfspool using previous defined dataset
lxc storage create zfspool zfs source=rpool/lxd

# define default storage pool
lxc profile device add default root disk path=/ pool=zfspool

# initialize network
sudo lxd init

Because group membership is only applied at login, you then either need to close and re-open your user session or use the “newgrp lxd” command in the shell you're going to interact with lxd from

newgrp lxd

lxc-prepare (chmod +x)

#!/bin/bash
 
NAME=$1
ALIAS=$2
ALIAS=${ALIAS:=xenial}
 
lxc image show $ALIAS >/dev/null 2>&1
if [ ! $? = 0 ]; then
    echo lxc image copy images:ubuntu/xenial/amd64 local: --alias xenial
    exit 0
fi
 
if [ ! -f /etc/apt/apt.conf.d/proxy.conf ]; then
    sudo apt install apt-cacher-ng
    PROXY=$( lxc network show lxdbr0 | sed -n 's/\s\+ipv4.address: \([0-9\.]\+\).*/\1/p' )
    echo "Acquire::http::Proxy \"http://$PROXY:3142\";" | sudo tee /etc/apt/apt.conf.d/proxy.conf
    echo "PfilePattern = .*" | sudo tee -a /etc/apt-cacher-ng/acng.conf
    echo "PassThroughPattern: .*" | sudo tee -a /etc/apt-cacher-ng/acng.conf
    systemctl restart apt-cacher-ng
fi
 
 
lxc info $NAME >/dev/null 2>&1
if [ ! $? = 0 ]; then
    lxc launch $ALIAS $NAME
fi
 
 
if [ -f /etc/apt/apt.conf.d/proxy.conf ]; then
    lxc file push /etc/apt/apt.conf.d/proxy.conf $NAME/etc/apt/apt.conf.d/
fi
 
lxc file push /etc/inputrc $NAME/etc/

list remote images

lxc image list images:

auto update remote images

lxc config set images.auto_update_cached true

import image

lxc image copy images:ubuntu/xenial/amd64 local: --alias xenial

create profile

lxc profile create juju-default
cat profile.yaml | lxc profile edit juju-default

profile.yaml

name: juju-default
config:
  boot.autostart: "true"
  security.nesting: "true"
  security.privileged: "true"
  linux.kernel_modules: openvswitch,nbd,ip_tables,ip6_tables
devices:
  eth0:
    mtu: "9000"
    name: eth0
    nictype: bridged
    parent: br-mng
    type: nic
  kvm:
    path: /dev/kvm
    type: unix-char
  mem:
    path: /dev/mem
    type: unix-char
  root:
    path: /
    type: disk
  tun:
    path: /dev/net/tun
    type: unix-char

create container from local image

lxc image list
lxc launch xenial test1 --profile juju-default

create container from remote image

lxc launch images:ubuntu/xenial/amd64 xenial1
lxc config set xenial1 boot.autostart false
lxc list

bash inside

lxc exec trusty1 -- /bin/bash

stop and delete

lxc stop trusty1
lxc delete trusty1

autostart on host boot

lxc config set <name> boot.autostart true

show container configuration

lxc config show <name>

proxy

apt install apt-cacher-ng
NAME=x11test
lxc file push /etc/apt/apt.conf.d/proxy.conf $NAME/etc/apt/apt.conf.d/

/etc/apt/apt.conf.d/proxy

Acquire::http::Proxy "http://10.106.191.1:3142";

prepare lxd server

# bind to port 8443
lxc config set core.https_address "[::]" 

# password
lxc config set core.trust_password some-password

from client add remote server

lxc remote add myserver <ip address or DNS>

run command

lxc exec myserver:trusty1 -- bash

• https://bitsandslices.wordpress.com/2015/12/08/creating-an-lxd-container-for-graphics-applications/

create container

NAME=x11test
lxc launch images:ubuntu/xenial/amd64 $NAME

install simpler X program

lxc exec $NAME -- apt install xterm

set DISPLAY env to xorg server on host

lxc config set x11test environment.DISPLAY <ip-of-host-lxdbr0-bridge>:0

for gmd (ubuntu >= 17.10) or …

/etc/gdm3/custom.conf

[security]
DisallowTCP=false
 
[xdmcp]
Enable=true

… or for lightdm

/etc/lightdm/lightdm.conf

xserver-allow-tcp=true
xserver-command=X -listen tcp

add ip of container on /etc/X0.hosts

NAME=x11test
lxc info $NAME | sed -n "s/\s*eth0:\s*inet\s\([0-9\.]*\).*/\1/p" >> /etc/X0.hosts

launch X application in container

xhost +
lxc exec $NAME -- xterm

• https://bitsandslices.wordpress.com/2015/12/10/using-audio-in-lxd-containers/

lxc config device add <name> rfxcom unix-char path=/dev/ttyACM0
lxc config device set <name>  rfxcom  mode 666

echo "root:$UID:1" | sudo tee -a /etc/subuid
echo "root:$GID:1" | sudo tee -a /etc/subgid

# lxc init stretch giano
lxc config set giano raw.idmap "both $UID $UID"
# source is on host, path is inside container
lxc config device add giano develop disk source=/mnt/giano path=/mnt/giano

on host-destination

lxc config set core.https_address 0.0.0.0:8443
lxc config set core.trust_password PASSWORDhere

on host-origin

# add destination lxd
lxc remote add other-server <ip-address>

# take snap0 on gianocop container
lxc snapshot gianocop snap0
lxc copy gianocop/snap0 other-server:gianocop --verbose
lxc delete gianocop/snap0