auto install and configure lxd

install-lxd.sh

#!/bin/bash
# Run this script as root ( or sudo ) and pass username as argument.
# Version v0.1 (initial)
# David Kedves <kedazo@severalnines.com>
USERNAME=$1

apt-get install -y snapd
# /snap/bin must be in path
grep '/snap/bin' /etc/profile 2>/dev/null || echo 'export PATH=/snap/bin:${PATH}' >> /etc/profile
grep '/snap/bin' /root/.bashrc 2>/dev/null || echo 'export PATH=/snap/bin:${PATH}' >> /root/.bashrc
grep '/snap/bin' ~${USERNAME}/.bashrc 2>/dev/null || echo 'export PATH=/snap/bin:${PATH}' >> ~${USERNAME}.bashrc
# also export here in the script as well
export PATH=/snap/bin:${PATH}

# NOTE: apt repo only contains a way old 2.x LXD, we prefer 'snap'
dpkg -P lxd lxd-client || true # get rid of any old version(s) first
snap install lxd || apt-get -y install lxd lxd-client

# pre-seed file for LXD 3.x
cat - > /root/lxdinit.yaml <<EOF
config: {}

# Storage pools
storage_pools:
- name: default
  driver: dir
  config:
    source: /var/lib/lxd/storage-pools/default

# Network devices
networks:
- name: lxdbr0
  type: bridge
  config:
    ipv4.address: auto
    ipv6.address: none

# Profiles
profiles:
- name: default
  devices:
    root:
      path: /
      pool: default
      type: disk
    eth0:
      name: eth0
      nictype: bridged
      parent: lxdbr0
      type: nic
EOF

cat /root/lxdinit.yaml | lxd init --preseed || lxd init --auto
# add the user to LXD group, so he can use the LXD client 'lxc' command
gpasswd -a ${USERNAME} lxd