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# vi: ts=4 expandtab
#
# Copyright (C) 2016 Canonical Ltd.
#
# Author: Wesley Wiedenmeier <wesley.wiedenmeier@canonical.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
This module initializes lxd using 'lxd init'
Example config:
#cloud-config
lxd:
init:
network_address: <ip addr>
network_port: <port>
storage_backend: <zfs/dir>
storage_create_device: <dev>
storage_create_loop: <size>
storage_pool: <name>
trust_password: <password>
"""
from cloudinit import util
def handle(name, cfg, cloud, log, args):
# Get config
lxd_cfg = cfg.get('lxd')
if not lxd_cfg:
log.debug("Skipping module named %s, not present or disabled by cfg")
return
if not isinstance(lxd_cfg, dict):
log.warn("lxd config must be a dictionary. found a '%s'",
type(lxd_cfg))
return
init_cfg = lxd_cfg.get('init')
if not isinstance(init_cfg, dict):
log.warn("lxd/init config must be a dictionary. found a '%s'",
type(init_cfg))
init_cfg = {}
if not init_cfg:
log.debug("no lxd/init config. disabled.")
return
packages = []
# Ensure lxd is installed
if not util.which("lxd"):
packages.append('lxd')
# if using zfs, get the utils
if init_cfg.get("storage_backend") == "zfs" and not util.which('zfs'):
packages.append('zfs')
if len(packages):
try:
cloud.distro.install_packages(packages)
except util.ProcessExecutionError as exc:
log.warn("failed to install packages %s: %s", packages, exc)
return
# Set up lxd if init config is given
init_keys = (
'network_address', 'network_port', 'storage_backend',
'storage_create_device', 'storage_create_loop',
'storage_pool', 'trust_password')
cmd = ['lxd', 'init', '--auto']
for k in init_keys:
if init_cfg.get(k):
cmd.extend(["--%s=%s" %
(k.replace('_', '-'), str(init_cfg[k]))])
util.subp(cmd)
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