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# Copyright (C) 2014 Rackspace, US Inc.
# Copyright (C) 2016 Matthew Thode.
#
# Author: Nate House <nathan.house@rackspace.com>
# Author: Matthew Thode <prometheanfire@gentoo.org>
#
# 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 subp
from cloudinit import util
from cloudinit.distros import net_util
from cloudinit.distros.parsers.hostname import HostnameConf
from cloudinit.settings import PER_INSTANCE
LOG = logging.getLogger(__name__)
class Distro(distros.Distro):
locale_conf_fn = '/etc/locale.gen'
network_conf_fn = '/etc/conf.d/net'
resolve_conf_fn = '/etc/resolv.conf'
hostname_conf_fn = '/etc/conf.d/hostname'
init_cmd = ['rc-service'] # init scripts
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 = 'gentoo'
# Fix sshd restarts
cfg['ssh_svcname'] = '/etc/init.d/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(self, settings):
entries = net_util.translate_network(settings)
LOG.debug("Translated ubuntu style network settings %s into %s",
settings, entries)
dev_names = entries.keys()
nameservers = []
for (dev, info) in entries.items():
if 'dns-nameservers' in info:
nameservers.extend(info['dns-nameservers'])
if dev == 'lo':
continue
net_fn = self.network_conf_fn + '.' + dev
dns_nameservers = info.get('dns-nameservers')
if isinstance(dns_nameservers, (list, tuple)):
dns_nameservers = str(tuple(dns_nameservers)).replace(',', '')
# eth0, {'auto': True, 'ipv6': {}, 'bootproto': 'dhcp'}
# lo, {'dns-nameservers': ['10.0.1.3'], 'ipv6': {}, 'auto': True}
results = ''
if info.get('bootproto') == 'dhcp':
results += 'config_{name}="dhcp"'.format(name=dev)
else:
results += (
'config_{name}="{ip_address} netmask {netmask}"\n'
'mac_{name}="{hwaddr}"\n'
).format(name=dev, ip_address=info.get('address'),
netmask=info.get('netmask'),
hwaddr=info.get('hwaddress'))
results += 'routes_{name}="default via {gateway}"\n'.format(
name=dev,
gateway=info.get('gateway')
)
if info.get('dns-nameservers'):
results += 'dns_servers_{name}="{dnsservers}"\n'.format(
name=dev,
dnsservers=dns_nameservers)
util.write_file(net_fn, results)
self._create_network_symlink(dev)
if info.get('auto'):
cmd = ['rc-update', 'add', 'net.{name}'.format(name=dev),
'default']
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)
if nameservers:
util.write_file(self.resolve_conf_fn,
convert_resolv_conf(nameservers))
return dev_names
@staticmethod
def _create_network_symlink(interface_name):
file_path = '/etc/init.d/net.{name}'.format(name=interface_name)
if not util.is_link(file_path):
util.sym_link('/etc/init.d/net.lo', file_path)
def _bring_up_interface(self, device_name):
cmd = ['/etc/init.d/net.%s' % device_name, 'restart']
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):
use_all = False
for d in device_names:
if d == 'all':
use_all = True
if use_all:
# Grab device names from init scripts
cmd = ['ls', '/etc/init.d/net.*']
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)
return False
devices = [x.split('.')[2] for x in _out.split(' ')]
return distros.Distro._bring_up_interfaces(self, devices)
else:
return distros.Distro._bring_up_interfaces(self, device_names)
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('')
# Many distro's format is the hostname by itself, and that is the
# way HostnameConf works but gentoo expects it to be in
# hostname="the-actual-hostname"
conf.set_hostname('hostname="%s"' % your_hostname)
util.write_file(out_fn, str(conf), 0o644)
def _read_system_hostname(self):
sys_hostname = self._read_hostname(self.hostname_conf_fn)
return self.hostname_conf_fn, sys_hostname
@staticmethod
def _read_hostname_conf(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 = list('emerge')
# Redirect output
cmd.append("--quiet")
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,
["-u", "world"], freq=PER_INSTANCE)
def convert_resolv_conf(settings):
"""Returns a settings string formatted for resolv.conf."""
result = ''
if isinstance(settings, list):
for ns in settings:
result += 'nameserver %s\n' % ns
return result
# vi: ts=4 expandtab
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