lk/distros/void/lxc.md

Intro

Taken from this Void linux requires additional steps to set up, as Systemd is no present to automatically take care of everything.

sudo xbps-install cgmanager dbus bridge-utils lxc

Next, startup services:

sudo ln -s /etc/sv/dbus/ /var/service/

sudo ln -s /etc/sv/cgmanager/ /var/service/

sudo sv start dbus

sudo sv start cgmanager

sudo sv start dbus

sudo sv start cgmanager

Maps your user account to the lxc g/u ids:

sudo usermod --add-subuids 100000-165536 $USER

sudo usermod --add-subgids 100000-165536 $USER

Then add a bridge interface to connect the container.

sudo brctl addbr lxbr0

Then add an interface. I have no idea how this is done or what it means, so I tried my wifi 'wlp3s0', and that was refused. I tried the guide's one, which obviously didn't work as I didn't have the same interface as in the guide. Finally, I tried ip addr show and noticed other devices 'lo' and 'wwp0s20u4i6'. This gave me:

sudo brctl addif lxbr0 wwp0s20u4i6

... which worked.

If you don't want to redo this each boot, you can make a runit service for it apparently - more research is required for this. For now, I'm just copy-pasting the guide (almost) and sticking this in ~/.config/lxc/default.conf:

lxc.network.type = veth

lxc.network.link = wwp0s20u4i6

lxc.network.flags = up

lxc.network.hwaddr = 00:16:3e:BB:CC:DD

lxc.id_map = u 0 100000 65536

lxc.id_map = g 0 100000 65536

You can now configure a different bridge each boot to connect with the lxc containers, or ....

Next, do this at every boot (or script it):

sudo cgm create all $USER

sudo cgm chown all USER (id -u) $(id -g)

cgm movepid all USER $