Current File : //snap/core/17247/usr/lib/python3/dist-packages/cloudinit/distros/alpine.py
# Copyright (C) 2016 Matt Dainty
# Copyright (C) 2020 Dermot Bradley
#
# Author: Matt Dainty <matt@bodgit-n-scarper.com>
# Author: Dermot Bradley <dermot_bradley@yahoo.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
from cloudinit import distros
from cloudinit import helpers
from cloudinit import subp
from cloudinit import util
from cloudinit.distros.parsers.hostname import HostnameConf
from cloudinit.settings import PER_INSTANCE
NETWORK_FILE_HEADER = """\
# This file is generated from information provided by the datasource. Changes
# to it will not persist across an instance reboot. To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
"""
class Distro(distros.Distro):
init_cmd = ['rc-service'] # init scripts
locale_conf_fn = "/etc/profile.d/locale.sh"
network_conf_fn = "/etc/network/interfaces"
renderer_configs = {
"eni": {"eni_path": network_conf_fn,
"eni_header": NETWORK_FILE_HEADER}
}
def __init__(self, name, cfg, paths):
distros.Distro.__init__(self, name, cfg, paths)
# This will be used to restrict certain
# calls from repeatly happening (when they
# should only happen say once per instance...)
self._runner = helpers.Runners(paths)
self.default_locale = 'C.UTF-8'
self.osfamily = 'alpine'
cfg['ssh_svcname'] = 'sshd'
def get_locale(self):
"""The default locale for Alpine Linux is different than
cloud-init's DataSource default.
"""
return self.default_locale
def apply_locale(self, locale, out_fn=None):
# Alpine has limited locale support due to musl library limitations
if not locale:
locale = self.default_locale
if not out_fn:
out_fn = self.locale_conf_fn
lines = [
"#",
"# This file is created by cloud-init once per new instance boot",
"#",
"export CHARSET=UTF-8",
"export LANG=%s" % locale,
"export LC_COLLATE=C",
"",
]
util.write_file(out_fn, "\n".join(lines), 0o644)
def install_packages(self, pkglist):
self.update_package_sources()
self.package_command('add', pkgs=pkglist)
def _write_network_config(self, netconfig):
return self._supported_write_network_config(netconfig)
def _bring_up_interfaces(self, device_names):
use_all = False
for d in device_names:
if d == 'all':
use_all = True
if use_all:
return distros.Distro._bring_up_interface(self, '-a')
else:
return distros.Distro._bring_up_interfaces(self, device_names)
def _write_hostname(self, your_hostname, out_fn):
conf = None
try:
# Try to update the previous one
# so lets see if we can read it first.
conf = self._read_hostname_conf(out_fn)
except IOError:
pass
if not conf:
conf = HostnameConf('')
conf.set_hostname(your_hostname)
util.write_file(out_fn, str(conf), 0o644)
def _read_system_hostname(self):
sys_hostname = self._read_hostname(self.hostname_conf_fn)
return (self.hostname_conf_fn, sys_hostname)
def _read_hostname_conf(self, filename):
conf = HostnameConf(util.load_file(filename))
conf.parse()
return conf
def _read_hostname(self, filename, default=None):
hostname = None
try:
conf = self._read_hostname_conf(filename)
hostname = conf.hostname
except IOError:
pass
if not hostname:
return default
return hostname
def _get_localhost_ip(self):
return "127.0.1.1"
def set_timezone(self, tz):
distros.set_etc_timezone(tz=tz, tz_file=self._find_tz_file(tz))
def package_command(self, command, args=None, pkgs=None):
if pkgs is None:
pkgs = []
cmd = ['apk']
# Redirect output
cmd.append("--quiet")
if args and isinstance(args, str):
cmd.append(args)
elif args and isinstance(args, list):
cmd.extend(args)
if command:
cmd.append(command)
pkglist = util.expand_package_list('%s-%s', pkgs)
cmd.extend(pkglist)
# Allow the output of this to flow outwards (ie not be captured)
subp.subp(cmd, capture=False)
def update_package_sources(self):
self._runner.run("update-sources", self.package_command,
["update"], freq=PER_INSTANCE)
@property
def preferred_ntp_clients(self):
"""Allow distro to determine the preferred ntp client list"""
if not self._preferred_ntp_clients:
self._preferred_ntp_clients = ['chrony', 'ntp']
return self._preferred_ntp_clients
def shutdown_command(self, mode='poweroff', delay='now', message=None):
# called from cc_power_state_change.load_power_state
# Alpine has halt/poweroff/reboot, with the following specifics:
# - we use them rather than the generic "shutdown"
# - delay is given with "-d [integer]"
# - the integer is in seconds, cannot be "now", and takes no "+"
# - no message is supported (argument ignored, here)
command = [mode, "-d"]
# Convert delay from minutes to seconds, as Alpine's
# halt/poweroff/reboot commands take seconds rather than minutes.
if delay == "now":
# Alpine's commands do not understand "now".
command += ['0']
else:
try:
command.append(str(int(delay) * 60))
except ValueError as e:
raise TypeError(
"power_state[delay] must be 'now' or '+m' (minutes)."
" found '%s'." % (delay,)
) from e
return command
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