FM / config

/usr/lib/python3.6/site-packages/cloudinit/config/

/usr/lib/python3.6/site-packages/cloudinit/config

Name	Size	Mode	Actions
schemas/	-	0755	rm
__pycache__/	-	0755	rm
cc_ansible.py	8894	0644	edit dl rm
cc_apk_configure.py	5792	0644	edit dl rm
cc_apt_configure.py	42995	0644	edit dl rm
cc_apt_pipelining.py	2771	0644	edit dl rm
cc_bootcmd.py	2921	0644	edit dl rm
cc_byobu.py	3738	0644	edit dl rm
cc_ca_certs.py	9347	0644	edit dl rm
cc_chef.py	14102	0644	edit dl rm
cc_disable_ec2_metadata.py	2074	0644	edit dl rm
cc_disk_setup.py	33136	0644	edit dl rm
cc_fan.py	3093	0644	edit dl rm
cc_final_message.py	3470	0644	edit dl rm
cc_growpart.py	21538	0644	edit dl rm
cc_grub_dpkg.py	6812	0644	edit dl rm
cc_install_hotplug.py	3904	0644	edit dl rm
cc_keyboard.py	2439	0644	edit dl rm
cc_keys_to_console.py	3694	0644	edit dl rm
cc_landscape.py	5433	0644	edit dl rm
cc_locale.py	1903	0644	edit dl rm
cc_lxd.py	18580	0644	edit dl rm
cc_mcollective.py	6251	0644	edit dl rm
cc_migrator.py	3569	0644	edit dl rm
cc_mounts.py	20186	0644	edit dl rm
cc_ntp.py	21341	0644	edit dl rm
cc_package_update_upgrade_install.py	4652	0644	edit dl rm
cc_phone_home.py	5615	0644	edit dl rm
cc_power_state_change.py	7591	0644	edit dl rm
cc_puppet.py	14435	0644	edit dl rm
cc_reset_rmc.py	4575	0644	edit dl rm
cc_resizefs.py	10983	0644	edit dl rm
cc_resolv_conf.py	5103	0644	edit dl rm
cc_rh_subscription.py	17378	0644	edit dl rm
cc_rightscale_userdata.py	4387	0644	edit dl rm
cc_rsyslog.py	13800	0644	edit dl rm
cc_runcmd.py	2974	0644	edit dl rm
cc_salt_minion.py	6022	0644	edit dl rm
cc_scripts_per_boot.py	1697	0644	edit dl rm
cc_scripts_per_instance.py	1852	0644	edit dl rm
cc_scripts_per_once.py	1803	0644	edit dl rm
cc_scripts_user.py	1893	0644	edit dl rm
cc_scripts_vendor.py	2347	0644	edit dl rm
cc_seed_random.py	4837	0644	edit dl rm
cc_set_hostname.py	5254	0644	edit dl rm
cc_set_passwords.py	11234	0644	edit dl rm
cc_snap.py	6448	0644	edit dl rm
cc_spacewalk.py	3514	0644	edit dl rm
cc_ssh.py	15216	0644	edit dl rm
cc_ssh_authkey_fingerprints.py	4318	0644	edit dl rm
cc_ssh_import_id.py	6264	0644	edit dl rm
cc_timezone.py	1492	0644	edit dl rm
cc_ubuntu_advantage.py	17411	0644	edit dl rm
cc_ubuntu_autoinstall.py	4604	0644	edit dl rm
cc_ubuntu_drivers.py	4668	0644	edit dl rm
cc_update_etc_hosts.py	5283	0644	edit dl rm
cc_update_hostname.py	3963	0644	edit dl rm
cc_users_groups.py	8777	0644	edit dl rm
cc_wireguard.py	9439	0644	edit dl rm
cc_write_files.py	6819	0644	edit dl rm
cc_write_files_deferred.py	1721	0644	edit dl rm
cc_yum_add_repo.py	7633	0644	edit dl rm
cc_zypper_add_repo.py	6749	0644	edit dl rm
modules.py	12019	0644	edit dl rm
schema.py	56165	0644	edit dl rm
__init__.py	14	0644	edit dl rm

Edit: /usr/lib/python3.6/site-packages/cloudinit/config/cc_set_hostname.py (5254B)

# Copyright (C) 2011 Canonical Ltd.
# Copyright (C) 2012, 2013 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.
"""Set Hostname: Set hostname and FQDN"""

import logging
import os
from textwrap import dedent

from cloudinit import util
from cloudinit.atomic_helper import write_json
from cloudinit.cloud import Cloud
from cloudinit.config import Config
from cloudinit.config.schema import MetaSchema, get_meta_doc
from cloudinit.distros import ALL_DISTROS
from cloudinit.settings import PER_INSTANCE

frequency = PER_INSTANCE
MODULE_DESCRIPTION = """\
This module handles setting the system hostname and fully qualified domain
name (FQDN). If ``preserve_hostname`` is set, then the hostname will not be
altered.

A hostname and FQDN can be provided by specifying a full domain name under the
``FQDN`` key. Alternatively, a hostname can be specified using the ``hostname``
key, and the FQDN of the cloud will be used. If a FQDN specified with the
``hostname`` key, it will be handled properly, although it is better to use
the ``fqdn`` config key. If both ``fqdn`` and ``hostname`` are set,
the ``prefer_fqdn_over_hostname`` will force the use of FQDN in all distros
when true, and when false it will force the short hostname. Otherwise, the
hostname to use is distro-dependent.

.. note::
    cloud-init performs no hostname input validation before sending the
    hostname to distro-specific tools, and most tools will not accept a
    trailing dot on the FQDN.

This module will run in the init-local stage before networking is configured
if the hostname is set by metadata or user data on the local system.

This will occur on datasources like nocloud and ovf where metadata and user
data are available locally. This ensures that the desired hostname is applied
before any DHCP requests are performed on these platforms where dynamic DNS is
based on initial hostname.
"""

meta: MetaSchema = {
    "id": "cc_set_hostname",
    "name": "Set Hostname",
    "title": "Set hostname and FQDN",
    "description": MODULE_DESCRIPTION,
    "distros": [ALL_DISTROS],
    "frequency": frequency,
    "examples": [
        "preserve_hostname: true",
        dedent(
            """\
            hostname: myhost
            fqdn: myhost.example.com
            prefer_fqdn_over_hostname: true
            """
        ),
    ],
    "activate_by_schema_keys": [],
}

__doc__ = get_meta_doc(meta)
LOG = logging.getLogger(__name__)

class SetHostnameError(Exception):
    """Raised when the distro runs into an exception when setting hostname.

This may happen if we attempt to set the hostname early in cloud-init's
    init-local timeframe as certain services may not be running yet.
    """

def handle(name: str, cfg: Config, cloud: Cloud, args: list) -> None:
    if util.get_cfg_option_bool(cfg, "preserve_hostname", False):
        LOG.debug(
            "Configuration option 'preserve_hostname' is set,"
            " not setting the hostname in module %s",
            name,
        )
        return

# Set prefer_fqdn_over_hostname value in distro
    hostname_fqdn = util.get_cfg_option_bool(
        cfg, "prefer_fqdn_over_hostname", None
    )
    if hostname_fqdn is not None:
        cloud.distro.set_option("prefer_fqdn_over_hostname", hostname_fqdn)

# Set create_hostname_file in distro
    create_hostname_file = util.get_cfg_option_bool(
        cfg, "create_hostname_file", None
    )
    if create_hostname_file is not None:
        cloud.distro.set_option("create_hostname_file", create_hostname_file)

(hostname, fqdn, is_default) = util.get_hostname_fqdn(cfg, cloud)
    # Check for previous successful invocation of set_hostname

# set-hostname artifact file accounts for both hostname and fqdn
    # deltas. As such, it's format is different than cc_update_hostname's
    # previous-hostname file which only contains the base hostname.
    # TODO consolidate previous-hostname and set-hostname artifact files and
    # distro._read_hostname implementation so we only validate  one artifact.
    prev_fn = os.path.join(cloud.get_cpath("data"), "set-hostname")
    prev_hostname = {}
    if os.path.exists(prev_fn) and os.stat(prev_fn).st_size > 0:
        prev_hostname = util.load_json(util.load_file(prev_fn))
    hostname_changed = hostname != prev_hostname.get(
        "hostname"
    ) or fqdn != prev_hostname.get("fqdn")
    if not hostname_changed:
        LOG.debug("No hostname changes. Skipping set_hostname")
        return
    if is_default and hostname == "localhost":
        # https://github.com/systemd/systemd/commit/d39079fcaa05e23540d2b1f0270fa31c22a7e9f1
        LOG.debug("Hostname is localhost. Let other services handle this.")
        return
    LOG.debug("Setting the hostname to %s (%s)", fqdn, hostname)
    try:
        cloud.distro.set_hostname(hostname, fqdn)
    except Exception as e:
        msg = "Failed to set the hostname to %s (%s)" % (fqdn, hostname)
        util.logexc(LOG, msg)
        raise SetHostnameError("%s: %s" % (msg, e)) from e
    write_json(prev_fn, {"hostname": hostname, "fqdn": fqdn})

cmd: