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# vi: ts=4 expandtab
#
# Copyright (C) 2012 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
# Copyright (C) 2012 Yahoo! Inc.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
from cloudinit import distros
from cloudinit import log as logging
from cloudinit import util
from cloudinit.settings import PER_INSTANCE
LOG = logging.getLogger(__name__)
class Distro(distros.Distro):
def install_packages(self, pkglist):
self._update_package_sources()
self._apt_get('install', pkglist)
def _write_network(self, settings):
util.write_file("/etc/network/interfaces", settings)
def package_command(self, command, args=None):
self._apt_get(command, args)
def set_hostname(self, hostname):
util.write_file("/etc/hostname", "%s\n" % hostname, 0644)
LOG.debug("Setting hostname to %s", hostname)
util.subp(['hostname', hostname])
def update_hostname(self, hostname, prev_file):
hostname_prev = self._read_hostname(prev_file)
hostname_in_etc = self._read_hostname("/etc/hostname")
update_files = []
if not hostname_prev or hostname_prev != hostname:
update_files.append(prev_file)
if (not hostname_in_etc or
(hostname_in_etc == hostname_prev and hostname_in_etc != hostname)):
update_files.append("/etc/hostname")
for fn in update_files:
try:
util.write_file(fn, "%s\n" % hostname, 0644)
except:
util.logexc(LOG, "Failed to write hostname %s to %s",
hostname, fn)
if (hostname_in_etc and hostname_prev and
hostname_in_etc != hostname_prev):
LOG.debug(("%s differs from /etc/hostname."
" Assuming user maintained hostname."), prev_file)
if "/etc/hostname" in update_files:
LOG.debug("Setting hostname to %s", hostname)
util.subp(['hostname', hostname])
def _read_hostname(self, filename, default=None):
contents = util.load_file(filename, quiet=True)
for line in contents.splitlines():
hpos = line.find("#")
if hpos != -1:
line = line[0:hpos]
line = line.rstrip()
if line:
return line
return default
def _get_localhost_ip(self):
# Note: http://www.leonardoborda.com/blog/127-0-1-1-ubuntu-debian/
return "127.0.1.1"
def set_timezone(self, tz):
tz_file = os.path.join("/usr/share/zoneinfo", tz)
if not os.path.isfile(tz_file):
raise Exception(("Invalid timezone %s,"
" no file found at %s") % (tz, tz_file))
tz_contents = "%s\n" % tz
util.write_file("/etc/timezone", tz_contents)
# TODO, this should be in a rhel distro subclass??
if os.path.exists("/etc/sysconfig/clock"):
tz_contents = '"%s"\n' % tz
util.write_file("/etc/sysconfig/clock", tz_contents)
# This ensures that the correct tz will be used for the system
util.copy(tz_file, "/etc/localtime")
# apt_get top level command (install, update...), and args to pass it
def _apt_get(self, tlc, args=None):
e = os.environ.copy()
e['DEBIAN_FRONTEND'] = 'noninteractive'
cmd = ['apt-get', '--option', 'Dpkg::Options::=--force-confold',
'--assume-yes', tlc]
if args:
cmd.extend(args)
# Allow the output of this to flow outwards (ie not be captured)
util.subp(cmd, env=e, capture=False)
def _update_package_sources(self):
self._runner.run("update-sources", self._apt_get,
["update"], freq=PER_INSTANCE)
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