20711e97a3
This patch fixes issues in Fedora 18 (and upcoming RHEL 7) which are
present due to their use of systemd:
- store locale configuration in /etc/locale.conf
- store hostname in /etc/hostname
- use a symlink for /etc/localtime (prior code would set the timezone
but corrupt data in /usr/share/zoneinfo due to presence of symlink)
It also contains fixes for issues unrelated to systemd adoption:
- explicitly scan /dev/sr0 with blkid in order to get the optical drive
in the blkid cache. This prevents an issue on systems running 2.6
kernels (such as RHEL 6) in which config disks on some devices won't
be detected unless the device has previously been queried.
(For reference, see https://patchwork.kernel.org/patch/1770241/)
- append a newline when rewriting sysconfig files, as this is customary
text configuration file formatting and is expected by some parsers
(such as the ifcfg-rh plugin for NetworkManager)
243 lines
8.7 KiB
Python
243 lines
8.7 KiB
Python
# vi: ts=4 expandtab
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#
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# Copyright (C) 2009-2010 Canonical Ltd.
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# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
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# Copyright (C) 2012 Yahoo! Inc.
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#
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# Author: Scott Moser <scott.moser@canonical.com>
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# Author: Juerg Hafliger <juerg.haefliger@hp.com>
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# Author: Joshua Harlow <harlowja@yahoo-inc.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import errno
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import os
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from cloudinit import log as logging
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from cloudinit import sources
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from cloudinit import util
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LOG = logging.getLogger(__name__)
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class DataSourceNoCloud(sources.DataSource):
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def __init__(self, sys_cfg, distro, paths):
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sources.DataSource.__init__(self, sys_cfg, distro, paths)
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self.dsmode = 'local'
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self.seed = None
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self.cmdline_id = "ds=nocloud"
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self.seed_dir = os.path.join(paths.seed_dir, 'nocloud')
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self.supported_seed_starts = ("/", "file://")
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def __str__(self):
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root = sources.DataSource.__str__(self)
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return "%s [seed=%s][dsmode=%s]" % (root, self.seed, self.dsmode)
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def get_data(self):
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defaults = {
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"instance-id": "nocloud",
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"dsmode": self.dsmode,
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}
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found = []
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md = {}
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ud = ""
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try:
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# Parse the kernel command line, getting data passed in
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if parse_cmdline_data(self.cmdline_id, md):
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found.append("cmdline")
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except:
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util.logexc(LOG, "Unable to parse command line data")
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return False
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# Check to see if the seed dir has data.
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seedret = {}
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if util.read_optional_seed(seedret, base=self.seed_dir + "/"):
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md = util.mergemanydict([md, seedret['meta-data']])
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ud = seedret['user-data']
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found.append(self.seed_dir)
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LOG.debug("Using seeded cache data from %s", self.seed_dir)
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# If the datasource config had a 'seedfrom' entry, then that takes
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# precedence over a 'seedfrom' that was found in a filesystem
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# but not over external media
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if 'seedfrom' in self.ds_cfg and self.ds_cfg['seedfrom']:
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found.append("ds_config")
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md["seedfrom"] = self.ds_cfg['seedfrom']
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# if ds_cfg has 'user-data' and 'meta-data'
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if 'user-data' in self.ds_cfg and 'meta-data' in self.ds_cfg:
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if self.ds_cfg['user-data']:
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ud = self.ds_cfg['user-data']
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if self.ds_cfg['meta-data'] is not False:
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md = util.mergemanydict([md, self.ds_cfg['meta-data']])
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if 'ds_config' not in found:
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found.append("ds_config")
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label = self.ds_cfg.get('fs_label', "cidata")
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if label is not None:
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# Query optical drive to get it in blkid cache for 2.6 kernels
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util.find_devs_with(path="/dev/sr0")
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fslist = util.find_devs_with("TYPE=vfat")
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fslist.extend(util.find_devs_with("TYPE=iso9660"))
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label_list = util.find_devs_with("LABEL=%s" % label)
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devlist = list(set(fslist) & set(label_list))
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devlist.sort(reverse=True)
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for dev in devlist:
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try:
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LOG.debug("Attempting to use data from %s", dev)
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(newmd, newud) = util.mount_cb(dev, util.read_seeded)
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md = util.mergemanydict([newmd, md])
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ud = newud
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# For seed from a device, the default mode is 'net'.
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# that is more likely to be what is desired. If they want
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# dsmode of local, then they must specify that.
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if 'dsmode' not in md:
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md['dsmode'] = "net"
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LOG.debug("Using data from %s", dev)
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found.append(dev)
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break
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except OSError as e:
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if e.errno != errno.ENOENT:
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raise
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except util.MountFailedError:
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util.logexc(LOG, ("Failed to mount %s"
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" when looking for data"), dev)
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# There was no indication on kernel cmdline or data
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# in the seeddir suggesting this handler should be used.
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if len(found) == 0:
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return False
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seeded_interfaces = None
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# The special argument "seedfrom" indicates we should
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# attempt to seed the userdata / metadata from its value
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# its primarily value is in allowing the user to type less
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# on the command line, ie: ds=nocloud;s=http://bit.ly/abcdefg
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if "seedfrom" in md:
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seedfrom = md["seedfrom"]
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seedfound = False
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for proto in self.supported_seed_starts:
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if seedfrom.startswith(proto):
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seedfound = proto
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break
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if not seedfound:
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LOG.debug("Seed from %s not supported by %s", seedfrom, self)
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return False
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if 'network-interfaces' in md:
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seeded_interfaces = self.dsmode
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# This could throw errors, but the user told us to do it
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# so if errors are raised, let them raise
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(md_seed, ud) = util.read_seeded(seedfrom, timeout=None)
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LOG.debug("Using seeded cache data from %s", seedfrom)
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# Values in the command line override those from the seed
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md = util.mergemanydict([md, md_seed])
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found.append(seedfrom)
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# Now that we have exhausted any other places merge in the defaults
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md = util.mergemanydict([md, defaults])
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# Update the network-interfaces if metadata had 'network-interfaces'
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# entry and this is the local datasource, or 'seedfrom' was used
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# and the source of the seed was self.dsmode
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# ('local' for NoCloud, 'net' for NoCloudNet')
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if ('network-interfaces' in md and
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(self.dsmode in ("local", seeded_interfaces))):
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LOG.debug("Updating network interfaces from %s", self)
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self.distro.apply_network(md['network-interfaces'])
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if md['dsmode'] == self.dsmode:
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self.seed = ",".join(found)
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self.metadata = md
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self.userdata_raw = ud
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return True
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LOG.debug("%s: not claiming datasource, dsmode=%s", self, md['dsmode'])
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return False
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# Returns true or false indicating if cmdline indicated
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# that this module should be used
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# Example cmdline:
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# root=LABEL=uec-rootfs ro ds=nocloud
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def parse_cmdline_data(ds_id, fill, cmdline=None):
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if cmdline is None:
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cmdline = util.get_cmdline()
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cmdline = " %s " % cmdline
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if not (" %s " % ds_id in cmdline or " %s;" % ds_id in cmdline):
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return False
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argline = ""
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# cmdline can contain:
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# ds=nocloud[;key=val;key=val]
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for tok in cmdline.split():
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if tok.startswith(ds_id):
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argline = tok.split("=", 1)
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# argline array is now 'nocloud' followed optionally by
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# a ';' and then key=value pairs also terminated with ';'
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tmp = argline[1].split(";")
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if len(tmp) > 1:
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kvpairs = tmp[1:]
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else:
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kvpairs = ()
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# short2long mapping to save cmdline typing
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s2l = {"h": "local-hostname", "i": "instance-id", "s": "seedfrom"}
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for item in kvpairs:
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if item == "":
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continue
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try:
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(k, v) = item.split("=", 1)
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except:
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k = item
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v = None
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if k in s2l:
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k = s2l[k]
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fill[k] = v
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return True
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class DataSourceNoCloudNet(DataSourceNoCloud):
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def __init__(self, sys_cfg, distro, paths):
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DataSourceNoCloud.__init__(self, sys_cfg, distro, paths)
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self.cmdline_id = "ds=nocloud-net"
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self.supported_seed_starts = ("http://", "https://", "ftp://")
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self.seed_dir = os.path.join(paths.seed_dir, 'nocloud-net')
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self.dsmode = "net"
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# Used to match classes to dependencies
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datasources = [
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(DataSourceNoCloud, (sources.DEP_FILESYSTEM, )),
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(DataSourceNoCloudNet, (sources.DEP_FILESYSTEM, sources.DEP_NETWORK)),
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]
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# Return a list of data sources that match this set of dependencies
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def get_datasource_list(depends):
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return sources.list_from_depends(depends, datasources)
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