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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ# Copyright (C) 2013 Craig Tracey # Copyright (C) 2013 Hewlett-Packard Development Company, L.P. # # Author: Craig Tracey # Author: Juerg Haefliger # # This file is part of cloud-init. See LICENSE file for license information. """Resolv Conf: configure resolv.conf""" from logging import Logger from textwrap import dedent from cloudinit import log as logging from cloudinit import templater, util from cloudinit.cloud import Cloud from cloudinit.config import Config from cloudinit.config.schema import MetaSchema, get_meta_doc from cloudinit.settings import PER_INSTANCE LOG = logging.getLogger(__name__) RESOLVE_CONFIG_TEMPLATE_MAP = { "/etc/resolv.conf": "resolv.conf", "/etc/systemd/resolved.conf": "systemd.resolved.conf", } MODULE_DESCRIPTION = """\ This module is intended to manage resolv.conf in environments where early configuration of resolv.conf is necessary for further bootstrapping and/or where configuration management such as puppet or chef own DNS configuration. As Debian/Ubuntu will, by default, utilize resolvconf, and similarly Red Hat will use sysconfig, this module is likely to be of little use unless those are configured correctly. When using a :ref:`datasource_config_drive` and a RHEL-like system, resolv.conf will also be managed automatically due to the available information provided for DNS servers in the :ref:`network_config_v2` format. For those that with to have different settings, use this module. In order for the ``resolv_conf`` section to be applied, ``manage_resolv_conf`` must be set ``true``. .. note:: For Red Hat with sysconfig, be sure to set PEERDNS=no for all DHCP enabled NICs. .. note:: And, in Ubuntu/Debian it is recommended that DNS be configured via the standard /etc/network/interfaces configuration file. """ meta: MetaSchema = { "id": "cc_resolv_conf", "name": "Resolv Conf", "title": "Configure resolv.conf", "description": MODULE_DESCRIPTION, "distros": [ "alpine", "fedora", "mariner", "opensuse", "photon", "rhel", "sles", ], "frequency": PER_INSTANCE, "examples": [ dedent( """\ manage_resolv_conf: true resolv_conf: nameservers: - 8.8.8.8 - 8.8.4.4 searchdomains: - foo.example.com - bar.example.com domain: example.com sortlist: - 10.0.0.1/255 - 10.0.0.2 options: rotate: true timeout: 1 """ ) ], "activate_by_schema_keys": ["manage_resolv_conf"], } __doc__ = get_meta_doc(meta) def generate_resolv_conf(template_fn, params, target_fname): flags = [] false_flags = [] if "options" in params: for key, val in params["options"].items(): if isinstance(val, bool): if val: flags.append(key) else: false_flags.append(key) for flag in flags + false_flags: del params["options"][flag] if not params.get("options"): params["options"] = {} params["flags"] = flags LOG.debug("Writing resolv.conf from template %s", template_fn) templater.render_to_file(template_fn, target_fname, params) def handle( name: str, cfg: Config, cloud: Cloud, log: Logger, args: list ) -> None: """ Handler for resolv.conf @param name: The module name "resolv-conf" from cloud.cfg @param cfg: A nested dict containing the entire cloud config contents. @param cloud: The L{CloudInit} object in use. @param log: Pre-initialized Python logger object to use for logging. @param args: Any module arguments from cloud.cfg """ if "manage_resolv_conf" not in cfg: log.debug( "Skipping module named %s," " no 'manage_resolv_conf' key in configuration", name, ) return if not util.get_cfg_option_bool(cfg, "manage_resolv_conf", False): log.debug( "Skipping module named %s," " 'manage_resolv_conf' present but set to False", name, ) return if "resolv_conf" not in cfg: log.warning("manage_resolv_conf True but no parameters provided!") return try: template_fn = cloud.get_template_filename( RESOLVE_CONFIG_TEMPLATE_MAP[cloud.distro.resolve_conf_fn] ) except KeyError: log.warning("No template found, not rendering resolve configs") return generate_resolv_conf( template_fn=template_fn, params=cfg["resolv_conf"], target_fname=cloud.distro.resolve_conf_fn, ) return # vi: ts=4 expandtab