Ubuntu 14.04 : nested LXC

Reference

https://help.ubuntu.com/lts/serverguide/lxc.html#lxc-basic-usage

Here is how to run LXC within LXC

install lxc

# apt-get install lxc

create a container named “trusty”

# lxc-create -t ubuntu -n trusty ## # The default user is 'ubuntu' with password 'ubuntu'! # Use the 'sudo' command to run tasks as root in the container. ## #

# lxc-ls –fancy NAME    STATE    IPV4  IPV6  AUTOSTART -------------------------------------- trusty  STOPPED  -     -     NO

add lxc.mount.auto and lxc.aa_profile options into the config file of that container.

# echo "lxc.mount.auto = cgroup" >> /var/lib/lxc/trusty/config # echo "lxc.aa_profile = lxc-container-default-with-nesting" >> /var/lib/lxc/trusty/config

If you want to allow all of containers to do the nesting, you can enable that globally by adding two options into global configuration file “/etc/lxc/default.conf”.

start the container

# lxc-start -n trusty root@trusty:~# apt-get install lxc

install LXC into the container “trusty”

root@trusty:~# apt-get install lxc root@trusty:~# lxc-create -t ubuntu -n ubuntu-nested root@trusty:~# lxc-start -n ubuntu-nested

on the host ( not LXC ),

# lxc-ls --fancy –nesting NAME               STATE    IPV4                  IPV6  AUTOSTART ----------------------------------------------------------------- trusty             RUNNING  10.0.3.191, 10.0.4.1  -     NO \_ ubuntu-nested  RUNNING  10.0.4.219            -     NO

the container “ubuntu-netsted” is running within the container “trusty”.