Ubuntu 19.04: Install LXD for container

#!/bin/sh -e

# Skip version selection.
cat <<EOF | sudo debconf-set-selections
lxd lxd/snap-track select 3.0
EOF

# Install lxd. If you need zfs, install zfsutils-linux.
sudo apt install -y lxd lxd-client lxd-tools criu

# Add user to lxd group.
sudo gpasswd -a "${USER}" lxd
sudo reboot

#!/bin/sh


# Would you like to use LXD clustering? (yes/no) [default=no]: no
# Do you want to configure a new storage pool? (yes/no) [default=yes]: yes
# Name of the new storage pool [default=default]: default
# Name of the storage backend to use (dir, lvm, zfs) [default=zfs]: dir
# Would you like to connect to a MAAS server? (yes/no) [default=no]: no
# Would you like to create a new network bridge? (yes/no) [default=yes]: yes
# What should the new bridge be called? [default=lxdbr0]: lxdbr0
# What IPv4 address should be used? (CIDR subnet notation, “auto” or “none”)
# [default=auto]: auto
# What IPv6 address should be used? (CIDR subnet notation, “auto” or “none”)
# [default=auto]: none
# Would you like LXD to be available over the network? (yes/no)
# [default=no]: no
# Would you like stale cached images to be updated automatically? (yes/no)
# [default=yes] yes
# Would you like a YAML "lxd init" preseed to be printed? (yes/no)
# [default=no]: no

# Initialize LXD with NAT network.
lxd waitready
cat <<EOF | lxd init
no
yes
default
dir
no
yes
lxdbr0
auto
none
no
yes
no
EOF

#!/bin/sh -e


# Wait that LXD daemon is up.
lxd waitready

# Create and start debian-9.
lxc launch images:debian/stretch debian-9

# Wait that network interface is up.
for trial in $(seq 30); do
  if lxc exec debian-9 ip a s eth0 | grep 'inet ' > /dev/null; then
    break
  fi
  sleep 1
done

# Check whether network interface can be up or not.
if [ "${trial}" -eq 30 ]; then
  echo "Network interface cannot be up"
  exit 1
fi

# Show network interface.
lxc exec debian-9 ip a s