Current Dir: /snap/core22/2955/usr/lib/python3/dist-packages/cloudinit/config/
[DIR] schemas [ delete | rename ]
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[FILE] modules.py [ edit | delete | rename ]
[FILE] schema.py [ edit | delete | rename ]
[FILE] __init__.py [ edit | delete | rename ]
Viewing: /snap/core22/2955/usr/lib/python3/dist-packages/cloudinit/config/cc_resolv_conf.py
# Copyright (C) 2013 Craig Tracey
# Copyright (C) 2013 Hewlett-Packard Development Company, L.P.
#
# Author: Craig Tracey <craigtracey@gmail.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
"""Resolv Conf: configure resolv.conf"""
import logging
from cloudinit import templater, util
from cloudinit.cloud import Cloud
from cloudinit.config import Config
from cloudinit.config.schema import MetaSchema
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",
}
meta: MetaSchema = {
"id": "cc_resolv_conf",
"distros": [
"alpine",
"azurelinux",
"fedora",
"mariner",
"opensuse",
"opensuse-leap",
"opensuse-microos",
"opensuse-tumbleweed",
"photon",
"rhel",
"sle_hpc",
"sle-micro",
"sles",
"openeuler",
],
"frequency": PER_INSTANCE,
"activate_by_schema_keys": ["manage_resolv_conf"],
}
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, 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