218 lines
8.0 KiB
Python
218 lines
8.0 KiB
Python
# Copyright (C) 2012 Canonical Ltd.
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# Copyright (C) 2012, 2013 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 file is part of cloud-init. See LICENSE file for license information.
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import logging
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import os
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from cloudinit import distros, helpers, subp, util
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from cloudinit.distros import PackageList, rhel_util
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from cloudinit.distros.parsers.hostname import HostnameConf
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from cloudinit.settings import PER_ALWAYS, PER_INSTANCE
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LOG = logging.getLogger(__name__)
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class Distro(distros.Distro):
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# See: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/sec-Network_Configuration_Using_sysconfig_Files.html # noqa
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clock_conf_fn = "/etc/sysconfig/clock"
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locale_conf_fn = "/etc/sysconfig/i18n"
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systemd_locale_conf_fn = "/etc/locale.conf"
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network_conf_fn = "/etc/sysconfig/network"
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hostname_conf_fn = "/etc/sysconfig/network"
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systemd_hostname_conf_fn = "/etc/hostname"
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tz_local_fn = "/etc/localtime"
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usr_lib_exec = "/usr/libexec"
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# RHEL and derivatives use NetworkManager DHCP client by default.
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# But if NM is configured with using dhclient ("dhcp=dhclient" statement)
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# then the following location is used:
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# /var/lib/NetworkManager/dhclient-<uuid>-<network_interface>.lease
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dhclient_lease_directory = "/var/lib/NetworkManager"
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dhclient_lease_file_regex = r"dhclient-[\w-]+\.lease"
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renderer_configs = {
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"sysconfig": {
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"control": "etc/sysconfig/network",
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"iface_templates": "%(base)s/network-scripts/ifcfg-%(name)s",
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"route_templates": {
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"ipv4": "%(base)s/network-scripts/route-%(name)s",
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"ipv6": "%(base)s/network-scripts/route6-%(name)s",
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},
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}
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}
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# Should be fqdn if we can use it
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# See: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/5/html/deployment_guide/ch-sysconfig # noqa: E501
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prefer_fqdn = True
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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 repeatedly 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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self.osfamily = "redhat"
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self.default_locale = "en_US.UTF-8"
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self.system_locale = None
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cfg["ssh_svcname"] = "sshd"
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def install_packages(self, pkglist: PackageList):
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self.package_command("install", pkgs=pkglist)
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def get_locale(self):
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"""Return the default locale if set, else use system locale"""
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# read system locale value
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if not self.system_locale:
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self.system_locale = self._read_system_locale()
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# Return system_locale setting if valid, else use default locale
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return (
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self.system_locale if self.system_locale else self.default_locale
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)
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def apply_locale(self, locale, out_fn=None):
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if self.uses_systemd():
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if not out_fn:
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out_fn = self.systemd_locale_conf_fn
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else:
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if not out_fn:
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out_fn = self.locale_conf_fn
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locale_cfg = {
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"LANG": locale,
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}
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rhel_util.update_sysconfig_file(out_fn, locale_cfg)
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def _read_system_locale(self, keyname="LANG"):
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"""Read system default locale setting, if present"""
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if self.uses_systemd():
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locale_fn = self.systemd_locale_conf_fn
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else:
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locale_fn = self.locale_conf_fn
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if not locale_fn:
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raise ValueError("Invalid path: %s" % locale_fn)
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if os.path.exists(locale_fn):
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(_exists, contents) = rhel_util.read_sysconfig_file(locale_fn)
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if keyname in contents:
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return contents[keyname]
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else:
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return None
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def _write_hostname(self, hostname, filename):
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# systemd will never update previous-hostname for us, so
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# we need to do it ourselves
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if self.uses_systemd() and filename.endswith("/previous-hostname"):
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conf = HostnameConf("")
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conf.set_hostname(hostname)
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util.write_file(filename, str(conf), 0o644)
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elif self.uses_systemd():
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create_hostname_file = util.get_cfg_option_bool(
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self._cfg, "create_hostname_file", True
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)
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if create_hostname_file:
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subp.subp(["hostnamectl", "set-hostname", str(hostname)])
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else:
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subp.subp(
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[
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"hostnamectl",
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"set-hostname",
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"--transient",
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str(hostname),
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]
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)
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LOG.info(
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"create_hostname_file is False; hostname set transiently"
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)
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else:
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host_cfg = {
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"HOSTNAME": hostname,
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}
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rhel_util.update_sysconfig_file(filename, host_cfg)
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def _read_system_hostname(self):
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if self.uses_systemd():
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host_fn = self.systemd_hostname_conf_fn
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else:
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host_fn = self.hostname_conf_fn
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return (host_fn, self._read_hostname(host_fn))
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def _read_hostname(self, filename, default=None):
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if self.uses_systemd() and filename.endswith("/previous-hostname"):
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return util.load_text_file(filename).strip()
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elif self.uses_systemd():
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(out, _err) = subp.subp(["hostname"])
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out = out.strip()
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if len(out):
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return out
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else:
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return default
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else:
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(_exists, contents) = rhel_util.read_sysconfig_file(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 set_timezone(self, tz):
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tz_file = self._find_tz_file(tz)
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if self.uses_systemd():
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# Currently, timedatectl complains if invoked during startup
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# so for compatibility, create the link manually.
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util.del_file(self.tz_local_fn)
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util.sym_link(tz_file, self.tz_local_fn)
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else:
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# Adjust the sysconfig clock zone setting
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clock_cfg = {
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"ZONE": str(tz),
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}
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rhel_util.update_sysconfig_file(self.clock_conf_fn, clock_cfg)
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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.tz_local_fn)
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def package_command(self, command, args=None, pkgs=None):
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if pkgs is None:
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pkgs = []
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if subp.which("dnf"):
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LOG.debug("Using DNF for package management")
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cmd = ["dnf"]
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else:
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LOG.debug("Using YUM for package management")
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# the '-t' argument makes yum tolerant of errors on the command
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# line with regard to packages.
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#
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# For example: if you request to install foo, bar and baz and baz
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# is installed; yum won't error out complaining that baz is already
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# installed.
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cmd = ["yum", "-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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if args and isinstance(args, str):
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cmd.append(args)
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elif args and isinstance(args, list):
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cmd.extend(args)
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cmd.append(command)
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pkglist = util.expand_package_list("%s-%s", pkgs)
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cmd.extend(pkglist)
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# Allow the output of this to flow outwards (ie not be captured)
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subp.subp(cmd, capture=False)
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def update_package_sources(self, *, force=False):
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self._runner.run(
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"update-sources",
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self.package_command,
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["makecache"],
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freq=PER_ALWAYS if force else PER_INSTANCE,
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)
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