68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
# Copyright (C) 2011 Canonical Ltd.
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# Copyright (C) 2012, 2013 Hewlett-Packard Development Company, L.P.
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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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#
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# This file is part of cloud-init. See LICENSE file for license information.
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"""Update Hostname: Update hostname and fqdn"""
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import logging
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import os
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from cloudinit import util
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from cloudinit.cloud import Cloud
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from cloudinit.config import Config
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from cloudinit.config.schema import MetaSchema
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from cloudinit.settings import PER_ALWAYS
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meta: MetaSchema = {
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"id": "cc_update_hostname",
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"distros": ["all"],
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"frequency": PER_ALWAYS,
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"activate_by_schema_keys": [],
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}
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LOG = logging.getLogger(__name__)
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def handle(name: str, cfg: Config, cloud: Cloud, args: list) -> None:
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if util.get_cfg_option_bool(cfg, "preserve_hostname", False):
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LOG.debug(
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"Configuration option 'preserve_hostname' is set,"
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" not updating the hostname in module %s",
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name,
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)
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return
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# Set prefer_fqdn_over_hostname value in distro
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hostname_fqdn = util.get_cfg_option_bool(
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cfg, "prefer_fqdn_over_hostname", None
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)
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if hostname_fqdn is not None:
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cloud.distro.set_option("prefer_fqdn_over_hostname", hostname_fqdn)
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# Set create_hostname_file in distro
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create_hostname_file = util.get_cfg_option_bool(
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cfg, "create_hostname_file", None
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)
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if create_hostname_file is not None:
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cloud.distro.set_option("create_hostname_file", create_hostname_file)
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(hostname, fqdn, is_default) = util.get_hostname_fqdn(cfg, cloud)
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if is_default and hostname == "localhost":
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# https://github.com/systemd/systemd/commit/d39079fcaa05e23540d2b1f0270fa31c22a7e9f1
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LOG.debug("Hostname is localhost. Let other services handle this.")
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return
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try:
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prev_fn = os.path.join(cloud.get_cpath("data"), "previous-hostname")
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LOG.debug("Updating hostname to %s (%s)", fqdn, hostname)
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cloud.distro.update_hostname(hostname, fqdn, prev_fn)
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except Exception:
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util.logexc(
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LOG, "Failed to update the hostname to %s (%s)", fqdn, hostname
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)
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raise
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