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# Copyright (C) 2014 Rackspace, US Inc.
#
# Author: Nate House <nathan.house@rackspace.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
from cloudinit import distros
from cloudinit import helpers
from cloudinit import log as logging
from cloudinit import util
from cloudinit import subp
from cloudinit.distros import net_util
from cloudinit.distros.parsers.hostname import HostnameConf
from cloudinit.net.renderers import RendererNotFoundError
from cloudinit.settings import PER_INSTANCE
import os
LOG = logging.getLogger(__name__)
class Distro(distros.Distro):
locale_conf_fn = "/etc/locale.gen"
network_conf_dir = "/etc/netctl"
resolve_conf_fn = "/etc/resolv.conf"
init_cmd = ['systemctl'] # init scripts
renderer_configs = {
"netplan": {"netplan_path": "/etc/netplan/50-cloud-init.yaml",
"netplan_header": "# generated by cloud-init\n",
"postcmds": True}
}
def __init__(self, name, cfg, paths):
distros.Distro.__init__(self, name, cfg, paths)
# This will be used to restrict certain
# calls from repeatly happening (when they
# should only happen say once per instance...)
self._runner = helpers.Runners(paths)
self.osfamily = 'arch'
cfg['ssh_svcname'] = 'sshd'
def apply_locale(self, locale, out_fn=None):
if not out_fn:
out_fn = self.locale_conf_fn
subp.subp(['locale-gen', '-G', locale], capture=False)
# "" provides trailing newline during join
lines = [
util.make_header(),
'LANG="%s"' % (locale),
"",
]
util.write_file(out_fn, "\n".join(lines))
def install_packages(self, pkglist):
self.update_package_sources()
self.package_command('', pkgs=pkglist)
def _write_network_config(self, netconfig):
try:
return self._supported_write_network_config(netconfig)
except RendererNotFoundError:
# Fall back to old _write_network
raise NotImplementedError
def _write_network(self, settings):
entries = net_util.translate_network(settings)
LOG.debug("Translated ubuntu style network settings %s into %s",
settings, entries)
return _render_network(
entries, resolv_conf=self.resolve_conf_fn,
conf_dir=self.network_conf_dir,
enable_func=self._enable_interface)
def _enable_interface(self, device_name):
cmd = ['netctl', 'reenable', device_name]
try:
(_out, err) = subp.subp(cmd)
if len(err):
LOG.warning("Running %s resulted in stderr output: %s",
cmd, err)
except subp.ProcessExecutionError:
util.logexc(LOG, "Running interface command %s failed", cmd)
def _bring_up_interface(self, device_name):
cmd = ['netctl', 'restart', device_name]
LOG.debug("Attempting to run bring up interface %s using command %s",
device_name, cmd)
try:
(_out, err) = subp.subp(cmd)
if len(err):
LOG.warning("Running %s resulted in stderr output: %s",
cmd, err)
return True
except subp.ProcessExecutionError:
util.logexc(LOG, "Running interface command %s failed", cmd)
return False
def _bring_up_interfaces(self, device_names):
for d in device_names:
if not self._bring_up_interface(d):
return False
return True
def _write_hostname(self, your_hostname, out_fn):
conf = None
try:
# Try to update the previous one
# so lets see if we can read it first.
conf = self._read_hostname_conf(out_fn)
except IOError:
pass
if not conf:
conf = HostnameConf('')
conf.set_hostname(your_hostname)
util.write_file(out_fn, str(conf), omode="w", mode=0o644)
def _read_system_hostname(self):
sys_hostname = self._read_hostname(self.hostname_conf_fn)
return (self.hostname_conf_fn, sys_hostname)
def _read_hostname_conf(self, filename):
conf = HostnameConf(util.load_file(filename))
conf.parse()
return conf
def _read_hostname(self, filename, default=None):
hostname = None
try:
conf = self._read_hostname_conf(filename)
hostname = conf.hostname
except IOError:
pass
if not hostname:
return default
return hostname
def set_timezone(self, tz):
distros.set_etc_timezone(tz=tz, tz_file=self._find_tz_file(tz))
def package_command(self, command, args=None, pkgs=None):
if pkgs is None:
pkgs = []
cmd = ['pacman', "-Sy", "--quiet", "--noconfirm"]
# Redirect output
if args and isinstance(args, str):
cmd.append(args)
elif args and isinstance(args, list):
cmd.extend(args)
if command:
cmd.append(command)
pkglist = util.expand_package_list('%s-%s', pkgs)
cmd.extend(pkglist)
# Allow the output of this to flow outwards (ie not be captured)
subp.subp(cmd, capture=False)
def update_package_sources(self):
self._runner.run("update-sources", self.package_command,
["-y"], freq=PER_INSTANCE)
def _render_network(entries, target="/", conf_dir="etc/netctl",
resolv_conf="etc/resolv.conf", enable_func=None):
"""Render the translate_network format into netctl files in target.
Paths will be rendered under target.
"""
devs = []
nameservers = []
resolv_conf = subp.target_path(target, resolv_conf)
conf_dir = subp.target_path(target, conf_dir)
for (dev, info) in entries.items():
if dev == 'lo':
# no configuration should be rendered for 'lo'
continue
devs.append(dev)
net_fn = os.path.join(conf_dir, dev)
net_cfg = {
'Connection': 'ethernet',
'Interface': dev,
'IP': info.get('bootproto'),
'Address': "%s/%s" % (info.get('address'),
info.get('netmask')),
'Gateway': info.get('gateway'),
'DNS': info.get('dns-nameservers', []),
}
util.write_file(net_fn, convert_netctl(net_cfg))
if enable_func and info.get('auto'):
enable_func(dev)
if 'dns-nameservers' in info:
nameservers.extend(info['dns-nameservers'])
if nameservers:
util.write_file(resolv_conf,
convert_resolv_conf(nameservers))
return devs
def convert_netctl(settings):
"""Given a dictionary, returns a string in netctl profile format.
netctl profile is described at:
https://git.archlinux.org/netctl.git/tree/docs/netctl.profile.5.txt
Note that the 'Special Quoting Rules' are not handled here."""
result = []
for key in sorted(settings):
val = settings[key]
if val is None:
val = ""
elif isinstance(val, (tuple, list)):
val = "(" + ' '.join("'%s'" % v for v in val) + ")"
result.append("%s=%s\n" % (key, val))
return ''.join(result)
def convert_resolv_conf(settings):
"""Returns a settings string formatted for resolv.conf."""
result = ''
if isinstance(settings, list):
for ns in settings:
result = result + 'nameserver %s\n' % ns
return result
# vi: ts=4 expandtab
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