02fe019367
then each interface is brought up individually instead of using the '--all' which isn't on rhel. The default debian behavior will be to use this still though as it overrides the new bring up interfaces function for this case.
366 lines
14 KiB
Python
366 lines
14 KiB
Python
# vi: ts=4 expandtab
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#
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# Copyright (C) 2012 Canonical Ltd.
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# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
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# Copyright (C) 2012 Yahoo! Inc.
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#
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# Author: Scott Moser <scott.moser@canonical.com>
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# Author: Juerg Haefliger <juerg.haefliger@hp.com>
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# Author: Joshua Harlow <harlowja@yahoo-inc.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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from cloudinit import distros
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from cloudinit import helpers
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from cloudinit import log as logging
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from cloudinit import util
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from cloudinit.settings import PER_INSTANCE
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LOG = logging.getLogger(__name__)
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NETWORK_FN_TPL = '/etc/sysconfig/network-scripts/ifcfg-%s'
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# See: http://tiny.cc/6r99fw
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# For what alot of these files that are being written
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# are and the format of them
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# This library is used to parse/write
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# out the various sysconfig files edited
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#
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# It has to be slightly modified though
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# to ensure that all values are quoted
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# since these configs are usually sourced into
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# bash scripts...
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from configobj import ConfigObj
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# See: http://tiny.cc/oezbgw
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D_QUOTE_CHARS = {
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"\"": "\\\"",
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"(": "\\(",
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")": "\\)",
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"$": '\$',
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'`': '\`',
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}
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class Distro(distros.Distro):
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def __init__(self, name, cfg, paths):
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distros.Distro.__init__(self, name, cfg, paths)
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# This will be used to restrict certain
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# calls from repeatly happening (when they
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# should only happen say once per instance...)
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self._runner = helpers.Runners(paths)
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def install_packages(self, pkglist):
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self.package_command('install', pkglist)
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def _write_resolve(self, dns_servers, search_servers):
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contents = []
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if dns_servers:
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for s in dns_servers:
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contents.append("nameserver %s" % (s))
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if search_servers:
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contents.append("search %s" % (" ".join(search_servers)))
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if contents:
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resolve_rw_fn = self._paths.join(False, "/etc/resolv.conf")
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contents.insert(0, '# Created by cloud-init')
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util.write_file(resolve_rw_fn, "\n".join(contents), 0644)
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def _write_network(self, settings):
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# TODO(harlowja) fix this... since this is the ubuntu format
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entries = translate_network(settings)
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LOG.debug("Translated ubuntu style network settings %s into %s",
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settings, entries)
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# Make the intermediate format as the rhel format...
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nameservers = []
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searchservers = []
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dev_names = entries.keys()
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for (dev, info) in entries.iteritems():
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net_fn = NETWORK_FN_TPL % (dev)
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net_ro_fn = self._paths.join(True, net_fn)
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(prev_exist, net_cfg) = self._read_conf(net_ro_fn)
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net_cfg['DEVICE'] = dev
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boot_proto = info.get('bootproto')
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if boot_proto:
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net_cfg['BOOTPROTO'] = boot_proto
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net_mask = info.get('netmask')
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if net_mask:
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net_cfg["NETMASK"] = net_mask
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addr = info.get('address')
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if addr:
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net_cfg["IPADDR"] = addr
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if info.get('auto'):
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net_cfg['ONBOOT'] = 'yes'
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else:
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net_cfg['ONBOOT'] = 'no'
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gtway = info.get('gateway')
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if gtway:
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net_cfg["GATEWAY"] = gtway
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bcast = info.get('broadcast')
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if bcast:
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net_cfg["BROADCAST"] = bcast
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mac_addr = info.get('hwaddress')
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if mac_addr:
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net_cfg["MACADDR"] = mac_addr
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lines = net_cfg.write()
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if 'dns-nameservers' in info:
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nameservers.extend(info['dns-nameservers'])
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if 'dns-search' in info:
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searchservers.extend(info['dns-search'])
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if not prev_exist:
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lines.insert(0, '# Created by cloud-init')
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w_contents = "\n".join(lines)
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net_rw_fn = self._paths.join(False, net_fn)
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util.write_file(net_rw_fn, w_contents, 0644)
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if nameservers or searchservers:
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self._write_resolve(nameservers, searchservers)
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return dev_names
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def set_hostname(self, hostname):
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out_fn = self._paths.join(False, '/etc/sysconfig/network')
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self._write_hostname(hostname, out_fn)
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if out_fn == '/etc/sysconfig/network':
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# Only do this if we are running in non-adjusted root mode
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LOG.debug("Setting hostname to %s", hostname)
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util.subp(['hostname', hostname])
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def apply_locale(self, locale, out_fn=None):
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if not out_fn:
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out_fn = self._paths.join(False, '/etc/sysconfig/i18n')
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ro_fn = self._paths.join(True, '/etc/sysconfig/i18n')
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(_exists, contents) = self._read_conf(ro_fn)
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contents['LANG'] = locale
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w_contents = "\n".join(contents.write())
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util.write_file(out_fn, w_contents, 0644)
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def _write_hostname(self, hostname, out_fn):
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(_exists, contents) = self._read_conf(out_fn)
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contents['HOSTNAME'] = hostname
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w_contents = "\n".join(contents.write())
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util.write_file(out_fn, w_contents, 0644)
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def update_hostname(self, hostname, prev_file):
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hostname_prev = self._read_hostname(prev_file)
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read_fn = self._paths.join(True, "/etc/sysconfig/network")
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hostname_in_sys = self._read_hostname(read_fn)
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update_files = []
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if not hostname_prev or hostname_prev != hostname:
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update_files.append(prev_file)
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if (not hostname_in_sys or
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(hostname_in_sys == hostname_prev
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and hostname_in_sys != hostname)):
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write_fn = self._paths.join(False, "/etc/sysconfig/network")
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update_files.append(write_fn)
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for fn in update_files:
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try:
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self._write_hostname(hostname, fn)
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except:
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util.logexc(LOG, "Failed to write hostname %s to %s",
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hostname, fn)
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if (hostname_in_sys and hostname_prev and
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hostname_in_sys != hostname_prev):
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LOG.debug(("%s differs from /etc/sysconfig/network."
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" Assuming user maintained hostname."), prev_file)
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if "/etc/sysconfig/network" in update_files:
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# Only do this if we are running in non-adjusted root mode
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LOG.debug("Setting hostname to %s", hostname)
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util.subp(['hostname', hostname])
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def _read_hostname(self, filename, default=None):
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(_exists, contents) = self._read_conf(filename)
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if 'HOSTNAME' in contents:
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return contents['HOSTNAME']
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else:
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return default
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def _read_conf(self, fn):
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exists = False
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if os.path.isfile(fn):
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contents = util.load_file(fn).splitlines()
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exists = True
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else:
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contents = []
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return (exists, QuotingConfigObj(contents))
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def set_timezone(self, tz):
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tz_file = os.path.join("/usr/share/zoneinfo", tz)
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if not os.path.isfile(tz_file):
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raise RuntimeError(("Invalid timezone %s,"
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" no file found at %s") % (tz, tz_file))
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# Adjust the sysconfig clock zone setting
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read_fn = self._paths.join(True, "/etc/sysconfig/clock")
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(_exists, contents) = self._read_conf(read_fn)
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contents['ZONE'] = tz
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tz_contents = "\n".join(contents.write())
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write_fn = self._paths.join(False, "/etc/sysconfig/clock")
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util.write_file(write_fn, tz_contents)
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# This ensures that the correct tz will be used for the system
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util.copy(tz_file, self._paths.join(False, "/etc/localtime"))
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def package_command(self, command, args=None):
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cmd = ['yum']
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# If enabled, then yum will be tolerant of errors on the command line
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# with regard to packages.
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# For example: if you request to install foo, bar and baz and baz is
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# installed; yum won't error out complaining that baz is already
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# installed.
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cmd.append("-t")
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# Determines whether or not yum prompts for confirmation
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# of critical actions. We don't want to prompt...
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cmd.append("-y")
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cmd.append(command)
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if args:
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cmd.extend(args)
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# Allow the output of this to flow outwards (ie not be captured)
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util.subp(cmd, capture=False)
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def update_package_sources(self):
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self._runner.run("update-sources", self.package_command,
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["makecache"], freq=PER_INSTANCE)
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# This class helps adjust the configobj
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# writing to ensure that when writing a k/v
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# on a line, that they are properly quoted
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# and have no spaces between the '=' sign.
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# - This is mainly due to the fact that
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# the sysconfig scripts are often sourced
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# directly into bash/shell scripts so ensure
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# that it works for those types of use cases.
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class QuotingConfigObj(ConfigObj):
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def __init__(self, lines):
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ConfigObj.__init__(self, lines,
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interpolation=False,
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write_empty_values=True)
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def _quote_posix(self, text):
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if not text:
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return ''
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for (k, v) in D_QUOTE_CHARS.iteritems():
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text = text.replace(k, v)
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return '"%s"' % (text)
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def _quote_special(self, text):
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if text.lower() in ['yes', 'no', 'true', 'false']:
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return text
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else:
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return self._quote_posix(text)
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def _write_line(self, indent_string, entry, this_entry, comment):
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# Ensure it is formatted fine for
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# how these sysconfig scripts are used
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val = self._decode_element(self._quote(this_entry))
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# Single quoted strings should
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# always work.
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if not val.startswith("'"):
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# Perform any special quoting
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val = self._quote_special(val)
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key = self._decode_element(self._quote(entry, multiline=False))
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cmnt = self._decode_element(comment)
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return '%s%s%s%s%s' % (indent_string,
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key,
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"=",
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val,
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cmnt)
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# This is a util function to translate a ubuntu /etc/network/interfaces 'blob'
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# to a rhel equiv. that can then be written to /etc/sysconfig/network-scripts/
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# TODO(harlowja) remove when we have python-netcf active...
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def translate_network(settings):
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# Get the standard cmd, args from the ubuntu format
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entries = []
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for line in settings.splitlines():
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line = line.strip()
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if not line or line.startswith("#"):
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continue
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split_up = line.split(None, 1)
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if len(split_up) <= 1:
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continue
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entries.append(split_up)
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# Figure out where each iface section is
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ifaces = []
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consume = {}
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for (cmd, args) in entries:
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if cmd == 'iface':
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if consume:
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ifaces.append(consume)
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consume = {}
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consume[cmd] = args
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else:
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consume[cmd] = args
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# Check if anything left over to consume
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absorb = False
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for (cmd, args) in consume.iteritems():
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if cmd == 'iface':
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absorb = True
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if absorb:
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ifaces.append(consume)
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# Now translate
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real_ifaces = {}
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for info in ifaces:
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if 'iface' not in info:
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continue
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iface_details = info['iface'].split(None)
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dev_name = None
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if len(iface_details) >= 1:
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dev = iface_details[0].strip().lower()
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if dev:
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dev_name = dev
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if not dev_name:
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continue
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iface_info = {}
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if len(iface_details) >= 3:
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proto_type = iface_details[2].strip().lower()
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# Seems like this can be 'loopback' which we don't
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# really care about
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if proto_type in ['dhcp', 'static']:
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iface_info['bootproto'] = proto_type
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# These can just be copied over
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for k in ['netmask', 'address', 'gateway', 'broadcast']:
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if k in info:
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val = info[k].strip().lower()
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if val:
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iface_info[k] = val
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# Name server info provided??
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if 'dns-nameservers' in info:
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iface_info['dns-nameservers'] = info['dns-nameservers'].split()
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# Name server search info provided??
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if 'dns-search' in info:
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iface_info['dns-search'] = info['dns-search'].split()
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# Is any mac address spoofing going on??
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if 'hwaddress' in info:
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hw_info = info['hwaddress'].lower().strip()
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hw_split = hw_info.split(None, 1)
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if len(hw_split) == 2 and hw_split[0].startswith('ether'):
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hw_addr = hw_split[1]
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if hw_addr:
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iface_info['hwaddress'] = hw_addr
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real_ifaces[dev_name] = iface_info
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# Check for those that should be started on boot via 'auto'
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for (cmd, args) in entries:
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if cmd == 'auto':
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# Seems like auto can be like 'auto eth0 eth0:1' so just get the
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# first part out as the device name
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args = args.split(None)
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if not args:
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continue
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dev_name = args[0].strip().lower()
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if dev_name in real_ifaces:
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real_ifaces[dev_name]['auto'] = True
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return real_ifaces
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