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Mini Shell
#!/usr/bin/env python3
# vi: ts=4 expandtab
#
# Copyright (C) 2021 VMware Inc.
#
# This file is part of cloud-init. See LICENSE file for license information.
from cloudinit import distros, helpers
from cloudinit import log as logging
from cloudinit import net, subp, util
from cloudinit.distros import rhel_util as rhutil
from cloudinit.settings import PER_INSTANCE
LOG = logging.getLogger(__name__)
class Distro(distros.Distro):
systemd_hostname_conf_fn = "/etc/hostname"
network_conf_dir = "/etc/systemd/network/"
systemd_locale_conf_fn = "/etc/locale.conf"
resolve_conf_fn = "/etc/systemd/resolved.conf"
renderer_configs = {
"networkd": {
"resolv_conf_fn": resolve_conf_fn,
"network_conf_dir": network_conf_dir,
}
}
# Should be fqdn if we can use it
prefer_fqdn = True
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.osfamily = "photon"
self.init_cmd = ["systemctl"]
def exec_cmd(self, cmd, capture=True):
LOG.debug("Attempting to run: %s", cmd)
try:
(out, err) = subp.subp(cmd, capture=capture)
if err:
LOG.warning(
"Running %s resulted in stderr output: %s", cmd, err
)
return True, out, err
return False, out, err
except subp.ProcessExecutionError:
util.logexc(LOG, "Command %s failed", cmd)
return True, None, None
def generate_fallback_config(self):
key = "disable_fallback_netcfg"
disable_fallback_netcfg = self._cfg.get(key, True)
LOG.debug("%s value is: %s", key, disable_fallback_netcfg)
if not disable_fallback_netcfg:
return net.generate_fallback_config()
LOG.info(
"Skipping generate_fallback_config. Rely on PhotonOS default "
"network config"
)
return None
def apply_locale(self, locale, out_fn=None):
# This has a dependancy on glibc-i18n, user need to manually install it
# and enable the option in cloud.cfg
if not out_fn:
out_fn = self.systemd_locale_conf_fn
locale_cfg = {
"LANG": locale,
}
rhutil.update_sysconfig_file(out_fn, locale_cfg)
# rhutil will modify /etc/locale.conf
# For locale change to take effect, reboot is needed or we can restart
# systemd-localed. This is equivalent of localectl
cmd = ["systemctl", "restart", "systemd-localed"]
self.exec_cmd(cmd)
def install_packages(self, pkglist):
# self.update_package_sources()
self.package_command("install", pkgs=pkglist)
def _write_hostname(self, hostname, filename):
if filename and filename.endswith("/previous-hostname"):
util.write_file(filename, hostname)
else:
ret, _out, err = self.exec_cmd(
["hostnamectl", "set-hostname", str(hostname)]
)
if ret:
LOG.warning(
(
"Error while setting hostname: %s\nGiven hostname: %s",
err,
hostname,
)
)
def _read_system_hostname(self):
sys_hostname = self._read_hostname(self.systemd_hostname_conf_fn)
return (self.systemd_hostname_conf_fn, sys_hostname)
def _read_hostname(self, filename, default=None):
if filename and filename.endswith("/previous-hostname"):
return util.load_file(filename).strip()
_ret, out, _err = self.exec_cmd(["hostname", "-f"])
return out.strip() if out else default
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 not pkgs:
pkgs = []
cmd = ["tdnf", "-y"]
if args and isinstance(args, str):
cmd.append(args)
elif args and isinstance(args, list):
cmd.extend(args)
cmd.append(command)
pkglist = util.expand_package_list("%s-%s", pkgs)
cmd.extend(pkglist)
ret, _out, err = self.exec_cmd(cmd)
if ret:
LOG.error("Error while installing packages: %s", err)
def update_package_sources(self):
self._runner.run(
"update-sources",
self.package_command,
["makecache"],
freq=PER_INSTANCE,
)
Zerion Mini Shell 1.0