======Chroot using systemd-nspawn======

===== Installation =====

This tutorial is for creating a minimal Linux chroot inside a Linux distro that has SystemD fully implemented. This tutorial will not work on Debian Jessie. 

First we need to install some dependencies:

  sudo apt-get install debootstrap systemd-container
  
Depending on you distro, you may use another package manager to install instead. Now that we have debootstrap, we can have a basic Linux distro installation. In the example below we create a minimal Debian Jessie installation on ///var/chroot// directory 

  sudo mkdir -p /var/chroot
  sudo debootstrap --arch amd64 jessie /var/chroot http://ftp.us.debian.org/debian/
  
After this, the chroot is installed and fully functional.

===== Using for the first time =====

In order to access the chroot for the first time, use:

  sudo systemd-nspawn -D /var/chroot
  
This will let you to use the chroot as root user. It is a bad idea to use root, so first setup a root password, and then create a user. Once this is done, your chroot is ready for everyday usage.

===== Usage =====

To boot a chroot inside a [[https://en.wikipedia.org/wiki/LXC|container]] use:

  sudo systemd-nspawn -D /var/chroot -b
  
This will give you a login screen, so log in as your user. 

To log more terminals to this container, use:

  sudo machinectl login chroot