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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, helpers
from cloudinit import log as logging
from cloudinit import subp, 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/env.d/02locale"
locale_gen_fn = "/etc/locale.gen"
network_conf_fn = "/etc/conf.d/net"
hostname_conf_fn = "/etc/conf.d/hostname"
init_cmd = ["rc-service"] # init scripts
default_locale = "en_US.UTF-8"
# C.UTF8 makes sense to generate, but is not selected
# Add /etc/locale.gen entries to this list to support more locales
locales = ["C.UTF8 UTF-8", "en_US.UTF-8 UTF-8"]
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"
if distros.uses_systemd():
LOG.error("Cloud-init does not support systemd with gentoo")
def apply_locale(self, _, out_fn=None):
"""rc-only - not compatible with systemd
Locales need to be added to /etc/locale.gen and generated prior
to selection. Default to en_US.UTF-8 for simplicity.
"""
util.write_file(self.locale_gen_fn, "\n".join(self.locales), mode=644)
# generate locales
subp.subp(["locale-gen"], capture=False)
# select locale
subp.subp(
["eselect", "locale", "set", self.default_locale], capture=False
)
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, hostname, filename):
conf = None
try:
# Try to update the previous one
# so lets see if we can read it first.
conf = self._read_hostname_conf(filename)
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"' % hostname)
util.write_file(filename, 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):
cmd = list("emerge")
# Redirect output
cmd.append("--quiet")
if command == "upgrade":
cmd.extend(["--update", "world"])
else:
if pkgs is None:
pkgs = []
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,
["--sync"],
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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