# Copyright (C) 2014 Rackspace, US Inc. # Copyright (C) 2016 Matthew Thode. # # Author: Nate House # Author: Matthew Thode # # 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.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 util.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) = util.subp(cmd) if len(err): LOG.warning("Running %s resulted in stderr output: %s", cmd, err) except util.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) = util.subp(cmd) if len(err): LOG.warning("Running %s resulted in stderr output: %s", cmd, err) return True except util.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) = util.subp(cmd) if len(err): LOG.warning("Running %s resulted in stderr output: %s", cmd, err) except util.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('') conf.set_hostname(your_hostname) gentoo_hostname_config = 'hostname="%s"' % conf gentoo_hostname_config = gentoo_hostname_config.replace('\n', '') util.write_file(out_fn, gentoo_hostname_config, 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) util.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