JezK
Edit File: cc_update_etc_hosts.py
# Copyright (C) 2011 Canonical Ltd. # Copyright (C) 2012 Hewlett-Packard Development Company, L.P. # # Author: Scott Moser <scott.moser@canonical.com> # Author: Juerg Haefliger <juerg.haefliger@hp.com> # # This file is part of cloud-init. See LICENSE file for license information. """Update Etc Hosts: Update the hosts file (usually ``/etc/hosts``)""" import logging from cloudinit import lifecycle, templater, util from cloudinit.cloud import Cloud from cloudinit.config import Config from cloudinit.config.schema import MetaSchema from cloudinit.settings import PER_ALWAYS meta: MetaSchema = { "id": "cc_update_etc_hosts", "distros": ["all"], "frequency": PER_ALWAYS, "activate_by_schema_keys": ["manage_etc_hosts"], } LOG = logging.getLogger(__name__) def handle(name: str, cfg: Config, cloud: Cloud, args: list) -> None: manage_hosts = util.get_cfg_option_str(cfg, "manage_etc_hosts", False) hosts_fn = cloud.distro.hosts_fn if util.translate_bool(manage_hosts, addons=["template"]): if manage_hosts == "template": lifecycle.deprecate( deprecated="Value 'template' for key 'manage_etc_hosts'", deprecated_version="22.2", extra_message="Use 'true' instead.", ) (hostname, fqdn, _) = util.get_hostname_fqdn(cfg, cloud) if not hostname: LOG.warning( "Option 'manage_etc_hosts' was set, but no hostname was found" ) return # Render from a template file tpl_fn_name = cloud.get_template_filename( "hosts.%s" % (cloud.distro.osfamily) ) if not tpl_fn_name: raise RuntimeError( "No hosts template could be found for distro %s" % (cloud.distro.osfamily) ) templater.render_to_file( tpl_fn_name, hosts_fn, {"hostname": hostname, "fqdn": fqdn} ) elif manage_hosts == "localhost": (hostname, fqdn, _) = util.get_hostname_fqdn(cfg, cloud) if not hostname: LOG.warning( "Option 'manage_etc_hosts' was set, but no hostname was found" ) return LOG.debug("Managing localhost in %s", hosts_fn) cloud.distro.update_etc_hosts(hostname, fqdn) else: LOG.debug( "Configuration option 'manage_etc_hosts' is not set," " not managing %s in module %s", hosts_fn, name, )