/usr/lib/python2.7/dist-packages/koan/app.py is in python-koan 2.4.1-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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koan = kickstart over a network
a tool for network provisioning of virtualization (xen,kvm/qemu,vmware)
and network re-provisioning of existing Linux systems.
used with 'cobbler'. see manpage for usage.
Copyright 2006-2008 Red Hat, Inc and Others.
Michael DeHaan <michael.dehaan AT gmail>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
"""
import random
import os
import traceback
import tempfile
import shlex
ANCIENT_PYTHON = 0
try:
try:
from optparse import OptionParser
except:
from opt_parse import OptionParser # importing this for backwards compat with 2.2
try:
import subprocess as sub_process
except:
import sub_process
except:
# the main "replace-self" codepath of koan must support
# Python 1.5. Other sections may use 2.3 features (nothing newer)
# provided they are conditionally imported. This is to support
# EL 2.1. -- mpd
ANCIENT_PYTHON = 1
True = 1
False = 0
import exceptions
import time
import shutil
import errno
import re
import sys
import xmlrpclib
import string
import glob
import socket
import utils
import time
import configurator
COBBLER_REQUIRED = 1.300
"""
koan --virt [--profile=webserver|--system=name] --server=hostname
koan --replace-self --profile=foo --server=hostname [--kexec]
"""
DISPLAY_PARAMS = [
"name",
"distro","profile",
"kickstart","ks_meta",
"install_tree","kernel","initrd",
"netboot_enabled",
"kernel_options",
"repos",
"virt_ram",
"virt_disk",
"virt_disk_driver",
"virt_type",
"virt_path",
"virt_auto_boot",
"virt_pxe_boot",
]
def main():
"""
Command line stuff...
"""
try:
utils.setupLogging("koan")
except:
# most likely running RHEL3, where we don't need virt logging anyway
pass
if ANCIENT_PYTHON:
print "- command line usage on this version of python is unsupported"
print "- usage via spacewalk APIs only. Python x>=2.3 required"
return
p = OptionParser()
p.add_option("-k", "--kopts",
dest="kopts_override",
help="append additional kernel options")
p.add_option("-l", "--list",
dest="list_items",
help="lists remote items (EX: profiles, systems, or images)")
p.add_option("-v", "--virt",
dest="is_virt",
action="store_true",
help="install new virtual guest")
p.add_option("-u", "--update-files",
dest="is_update_files",
action="store_true",
help="update templated files from cobbler config management")
p.add_option("-c", "--update-config",
dest="is_update_config",
action="store_true",
help="update system configuration from cobbler config management")
p.add_option("", "--summary",
dest="summary",
action="store_true",
help="print configuration run stats")
p.add_option("-V", "--virt-name",
dest="virt_name",
help="use this name for the virtual guest")
p.add_option("-r", "--replace-self",
dest="is_replace",
action="store_true",
help="reinstall this host at next reboot")
p.add_option("-D", "--display",
dest="is_display",
action="store_true",
help="display the configuration stored in cobbler for the given object")
p.add_option("-p", "--profile",
dest="profile",
help="use this cobbler profile")
p.add_option("-y", "--system",
dest="system",
help="use this cobbler system")
p.add_option("-i", "--image",
dest="image",
help="use this cobbler image")
p.add_option("-s", "--server",
dest="server",
default=os.environ.get("COBBLER_SERVER",""),
help="attach to this cobbler server")
p.add_option("-S", "--static-interface",
dest="static_interface",
help="use static network configuration from this interface while installing")
p.add_option("-t", "--port",
dest="port",
help="cobbler port (default 80)")
p.add_option("-w", "--vm-poll",
dest="should_poll",
action="store_true",
help="for xen/qemu/KVM, poll & restart the VM after the install is done")
p.add_option("-P", "--virt-path",
dest="virt_path",
help="override virt install location")
p.add_option("", "--force-path",
dest="force_path",
action="store_true",
help="Force overwrite of virt install location")
p.add_option("-T", "--virt-type",
dest="virt_type",
help="override virt install type")
p.add_option("-B", "--virt-bridge",
dest="virt_bridge",
help="override virt bridge")
p.add_option("-n", "--nogfx",
action="store_true",
dest="no_gfx",
help="disable Xen graphics (xenpv,xenfv)")
p.add_option("", "--virt-auto-boot",
action="store_true",
dest="virt_auto_boot",
help="set VM for autoboot")
p.add_option("", "--virt-pxe-boot",
action="store_true",
dest="virt_pxe_boot",
help="PXE boot for installation override")
p.add_option("", "--add-reinstall-entry",
dest="add_reinstall_entry",
action="store_true",
help="when used with --replace-self, just add entry to grub, do not make it the default")
p.add_option("-C", "--livecd",
dest="live_cd",
action="store_true",
help="used by the custom livecd only, not for humans")
p.add_option("", "--kexec",
dest="use_kexec",
action="store_true",
help="Instead of writing a new bootloader config when using --replace-self, just kexec the new kernel and initrd")
p.add_option("", "--no-copy-default",
dest="no_copy_default",
action="store_true",
help="Do not copy the kernel args from the default kernel entry when using --replace-self")
p.add_option("", "--embed",
dest="embed_kickstart",
action="store_true",
help="When used with --replace-self, embed the kickstart in the initrd to overcome potential DHCP timeout issues. (seldom needed)")
p.add_option("", "--qemu-disk-type",
dest="qemu_disk_type",
help="when used with --virt_type=qemu, add select of disk driver types: ide,scsi,virtio")
p.add_option("", "--qemu-net-type",
dest="qemu_net_type",
help="when used with --virt_type=qemu, select type of network device to use: e1000, ne2k_pci, pcnet, rtl8139, virtio")
p.add_option("", "--qemu-machine-type",
dest="qemu_machine_type",
help="when used with --virt_type=qemu, select type of machine type to emulate: pc, pc-1.0, pc-0.15")
p.add_option("", "--wait",
dest="wait", type='int', default=0, # default to 0 for koan backwards compatibility
help="pass the --wait=<INT> argument to virt-install")
p.add_option("", "--noreboot",
dest="noreboot", default=False, # default to False for koan backwards compatibility
action="store_true",
help="pass the --noreboot argument to virt-install")
p.add_option("", "--import",
dest="osimport", default=False, # default to False for koan backwards compatibility
action="store_true",
help="pass the --import argument to virt-install")
(options, args) = p.parse_args()
try:
k = Koan()
k.list_items = options.list_items
k.server = options.server
k.is_virt = options.is_virt
k.is_update_files = options.is_update_files
k.is_update_config = options.is_update_config
k.summary = options.summary
k.is_replace = options.is_replace
k.is_display = options.is_display
k.profile = options.profile
k.system = options.system
k.image = options.image
k.live_cd = options.live_cd
k.virt_path = options.virt_path
k.force_path = options.force_path
k.virt_type = options.virt_type
k.virt_bridge = options.virt_bridge
k.no_gfx = options.no_gfx
k.add_reinstall_entry = options.add_reinstall_entry
k.kopts_override = options.kopts_override
k.static_interface = options.static_interface
k.use_kexec = options.use_kexec
k.no_copy_default = options.no_copy_default
k.should_poll = options.should_poll
k.embed_kickstart = options.embed_kickstart
k.virt_auto_boot = options.virt_auto_boot
k.virt_pxe_boot = options.virt_pxe_boot
k.qemu_disk_type = options.qemu_disk_type
k.qemu_net_type = options.qemu_net_type
k.qemu_machine_type = options.qemu_machine_type
k.virtinstall_wait = options.wait
k.virtinstall_noreboot= options.noreboot
k.virtinstall_osimport= options.osimport
if options.virt_name is not None:
k.virt_name = options.virt_name
if options.port is not None:
k.port = options.port
k.run()
except Exception, e:
(xa, xb, tb) = sys.exc_info()
try:
getattr(e,"from_koan")
print str(e)[1:-1] # nice exception, no traceback needed
except:
print xa
print xb
print string.join(traceback.format_list(traceback.extract_tb(tb)))
return 1
return 0
#=======================================================
class InfoException(exceptions.Exception):
"""
Custom exception for tracking of fatal errors.
"""
def __init__(self,value,**args):
self.value = value % args
self.from_koan = 1
def __str__(self):
return repr(self.value)
#=======================================================
class Koan:
def __init__(self):
"""
Constructor. Arguments will be filled in by optparse...
"""
self.server = None
self.system = None
self.profile = None
self.list_profiles = None
self.list_systems = None
self.is_virt = None
self.is_update_files = None
self.is_update_config = None
self.summary = None
self.is_replace = None
self.port = None
self.static_interface = None
self.virt_name = None
self.virt_type = None
self.virt_path = None
self.force_path = None
self.qemu_disk_type = None
self.qemu_net_type = None
self.qemu_machine_type = None
self.virt_auto_boot = None
self.virt_pxe_boot = None
self.virtinstall_wait = None
self.virtinstall_noreboot = None
self.virtinstall_osimport = None
# This option adds the --copy-default argument to /sbin/grubby
# which uses the default boot entry in the grub.conf
# as template for the new entry being added to that file.
# look at /sbin/grubby --help for more info
self.no_copy_default = None
#---------------------------------------------------
def run(self):
"""
koan's main function...
"""
# we can get the info we need from either the cobbler server
# or a kickstart file
if self.server is None:
raise InfoException, "no server specified"
# check to see that exclusive arguments weren't used together
found = 0
for x in (self.is_virt, self.is_replace, self.is_update_files, self.is_display, self.list_items, self.is_update_config):
if x:
found = found+1
if found != 1:
raise InfoException, "choose: --virt, --replace-self, --update-files, --list=what, or --display"
# This set of options are only valid with --server
if not self.server or self.server == "":
if self.list_items or self.profile or self.system or self.port:
raise InfoException, "--server is required"
self.xmlrpc_server = utils.connect_to_server(server=self.server, port=self.port)
if self.list_items:
self.list(self.list_items)
return
if not os.getuid() == 0:
if self.is_virt:
print "warning: running as non root"
else:
print "this operation requires root access"
return 3
# if both --profile and --system were ommitted, autodiscover
if self.is_virt:
if (self.profile is None and self.system is None and self.image is None):
raise InfoException, "must specify --profile, --system, or --image"
else:
if (self.profile is None and self.system is None and self.image is None):
self.system = self.autodetect_system(allow_interactive=self.live_cd)
if self.system is None:
while self.profile is None:
self.profile = self.ask_profile()
# if --virt-type was specified and invalid, then fail
if self.virt_type is not None:
self.virt_type = self.virt_type.lower()
if self.virt_type not in [ "qemu", "xenpv", "xenfv", "xen", "vmware", "vmwarew", "auto", "kvm" ]:
if self.virt_type == "xen":
self.virt_type = "xenpv"
raise InfoException, "--virt-type should be qemu, xenpv, xenfv, vmware, vmwarew, kvm, or auto"
# if --qemu-disk-type was called without --virt-type=qemu, then fail
if (self.qemu_disk_type is not None):
self.qemu_disk_type = self.qemu_disk_type.lower()
if self.virt_type not in [ "qemu", "auto", "kvm" ]:
raise InfoException, "--qemu-disk-type must use with --virt-type=qemu"
# if --qemu-net-type was called without --virt-type=qemu, then fail
if (self.qemu_net_type is not None):
self.qemu_net_type = self.qemu_net_type.lower()
if self.virt_type not in [ "qemu", "auto", "kvm" ]:
raise InfoException, "--qemu-net-type must use with --virt-type=qemu"
# if --qemu-machine-type was called without --virt-type=qemu, then fail
if (self.qemu_machine_type is not None):
self.qemu_machine_type = self.qemu_machine_type.lower()
if self.virt_type not in [ "qemu", "auto", "kvm" ]:
raise InfoException, "--qemu-machine-type must use with --virt-type=qemu"
# if --static-interface and --profile was called together, then fail
if self.static_interface is not None and self.profile is not None:
raise InfoException, "--static-interface option is incompatible with --profile option use --system instead"
# perform one of three key operations
if self.is_virt:
self.virt()
elif self.is_replace:
if self.use_kexec:
self.kexec_replace()
else:
self.replace()
elif self.is_update_files:
self.update_files()
elif self.is_update_config:
self.update_config()
else:
self.display()
# --------------------------------------------------
def ask_profile(self):
"""
Used by the live CD mode, if the system can not be auto-discovered, show a list of available
profiles and ask the user what they want to install.
"""
# FIXME: use a TUI library to make this more presentable.
try:
available_profiles = self.xmlrpc_server.get_profiles()
except:
traceback.print_exc()
self.connect_fail()
print "\n- which profile to install?\n"
for x in available_profiles:
print "%s" % x["name"]
sys.stdout.write("\n?>")
data = sys.stdin.readline().strip()
for x in available_profiles:
print "comp (%s,%s)" % (x["name"],data)
if x["name"] == data:
return data
return None
#---------------------------------------------------
def autodetect_system(self, allow_interactive=False):
"""
Determine the name of the cobbler system record that
matches this MAC address.
"""
systems = self.get_data("systems")
my_netinfo = utils.get_network_info()
my_interfaces = my_netinfo.keys()
mac_criteria = []
ip_criteria = []
for my_interface in my_interfaces:
mac_criteria.append(my_netinfo[my_interface]["mac_address"].upper())
ip_criteria.append(my_netinfo[my_interface]["ip_address"])
detected_systems = []
systems = self.get_data("systems")
for system in systems:
obj_name = system["name"]
for (obj_iname, obj_interface) in system['interfaces'].iteritems():
mac = obj_interface["mac_address"].upper()
ip = obj_interface["ip_address"].upper()
for my_mac in mac_criteria:
if mac == my_mac:
detected_systems.append(obj_name)
for my_ip in ip_criteria:
if ip == my_ip:
detected_systems.append(obj_name)
detected_systems = utils.uniqify(detected_systems)
if len(detected_systems) > 1:
raise InfoException, "Error: Multiple systems matched"
elif len(detected_systems) == 0:
if not allow_interactive:
mac_criteria = utils.uniqify(mac_criteria, purge="?")
ip_criteria = utils.uniqify(ip_criteria, purge="?")
raise InfoException, "Error: Could not find a matching system with MACs: %s or IPs: %s" % (",".join(mac_criteria), ",".join(ip_criteria))
else:
return None
elif len(detected_systems) == 1:
print "- Auto detected: %s" % detected_systems[0]
return detected_systems[0]
#---------------------------------------------------
def safe_load(self,hashv,primary_key,alternate_key=None,default=None):
if hashv.has_key(primary_key):
return hashv[primary_key]
elif alternate_key is not None and hashv.has_key(alternate_key):
return hashv[alternate_key]
else:
return default
#---------------------------------------------------
def net_install(self,after_download):
"""
Actually kicks off downloads and auto-ks or virt installs
"""
# initialise the profile, from the server if any
if self.profile:
profile_data = self.get_data("profile",self.profile)
elif self.system:
profile_data = self.get_data("system",self.system)
elif self.image:
profile_data = self.get_data("image",self.image)
else:
# shouldn't end up here, right?
profile_data = {}
if profile_data.get("kickstart","") != "":
# fix URLs
if profile_data["kickstart"][0] == "/" or profile_data["template_remote_kickstarts"]:
if not self.system:
profile_data["kickstart"] = "http://%s/cblr/svc/op/ks/profile/%s" % (profile_data['http_server'], profile_data['name'])
else:
profile_data["kickstart"] = "http://%s/cblr/svc/op/ks/system/%s" % (profile_data['http_server'], profile_data['name'])
# If breed is ubuntu/debian we need to source the install tree differently
# as preseeds are used instead of kickstarts.
if profile_data["breed"] in [ "ubuntu", "debian" ]:
self.get_install_tree_for_debian_ubuntu(profile_data)
else:
# find_kickstart source tree in the kickstart file
self.get_install_tree_from_kickstart(profile_data)
# if we found an install_tree, and we don't have a kernel or initrd
# use the ones in the install_tree
if self.safe_load(profile_data,"install_tree"):
if not self.safe_load(profile_data,"kernel"):
profile_data["kernel"] = profile_data["install_tree"] + "/images/pxeboot/vmlinuz"
if not self.safe_load(profile_data,"initrd"):
profile_data["initrd"] = profile_data["install_tree"] + "/images/pxeboot/initrd.img"
# find the correct file download location
if not self.is_virt:
if os.path.exists("/boot/efi/EFI/redhat/elilo.conf"):
# elilo itanium support, may actually still work
download = "/boot/efi/EFI/redhat"
else:
# whew, we have a sane bootloader
download = "/boot"
else:
# ensure we have a good virt type choice and know where
# to download the kernel/initrd
if self.virt_type is None:
self.virt_type = self.safe_load(profile_data,'virt_type',default=None)
if self.virt_type is None or self.virt_type == "":
self.virt_type = "auto"
# if virt type is auto, reset it to a value we can actually use
if self.virt_type == "auto":
if profile_data.get("xml_file","") != "":
raise InfoException("xmlfile based installations are not supported")
elif profile_data.has_key("file"):
print "- ISO or Image based installation, always uses --virt-type=qemu"
self.virt_type = "qemu"
else:
# FIXME: auto never selects vmware, maybe it should if we find it?
if not ANCIENT_PYTHON:
cmd = sub_process.Popen("/bin/uname -r", stdout=sub_process.PIPE, shell=True)
uname_str = cmd.communicate()[0]
if uname_str.find("xen") != -1:
self.virt_type = "xenpv"
elif os.path.exists("/usr/bin/qemu-img"):
self.virt_type = "qemu"
else:
# assume Xen, we'll check to see if virt-type is really usable later.
raise InfoException, "Not running a Xen kernel and qemu is not installed"
print "- no virt-type specified, auto-selecting %s" % self.virt_type
# now that we've figured out our virt-type, let's see if it is really usable
# rather than showing obscure error messages from Xen to the user :)
if self.virt_type in [ "xenpv", "xenfv" ]:
cmd = sub_process.Popen("uname -r", stdout=sub_process.PIPE, shell=True)
uname_str = cmd.communicate()[0]
# correct kernel on dom0?
if uname_str < "2.6.37" and uname_str.find("xen") == -1:
raise InfoException("kernel >= 2.6.37 or kernel-xen needs to be in use")
# xend installed?
if not os.path.exists("/usr/sbin/xend"):
raise InfoException("xen package needs to be installed")
# xend running?
rc = sub_process.call("/usr/sbin/xend status", stderr=None, stdout=None, shell=True)
if rc != 0:
raise InfoException("xend needs to be started")
# for qemu
if self.virt_type in [ "qemu", "kvm" ]:
# qemu package installed?
if not os.path.exists("/usr/bin/qemu-img"):
raise InfoException("qemu package needs to be installed")
# is libvirt new enough?
# Note: in some newer distros (like Fedora 19) the python-virtinst package has been
# subsumed into virt-install. If we don't have one check to see if we have the other.
rc, version_str = utils.subprocess_get_response(shlex.split('rpm -q virt-install'), True)
if rc != 0:
rc, version_str = utils.subprocess_get_response(shlex.split('rpm -q python-virtinst'), True)
if rc != 0 or version_str.find("virtinst-0.1") != -1 or version_str.find("virtinst-0.0") != -1:
raise InfoException("need python-virtinst >= 0.2 or virt-install package to do installs for qemu/kvm (depending on your OS)")
# for vmware
if self.virt_type == "vmware" or self.virt_type == "vmwarew":
# FIXME: if any vmware specific checks are required (for deps) do them here.
pass
if self.virt_type == "virt-image":
if not os.path.exists("/usr/bin/virt-image"):
raise InfoException("virt-image not present, downlevel virt-install package?")
# for both virt types
if os.path.exists("/etc/rc.d/init.d/libvirtd"):
rc = sub_process.call("/sbin/service libvirtd status", stdout=None, shell=True)
if rc != 0:
# libvirt running?
raise InfoException("libvirtd needs to be running")
if self.virt_type in [ "xenpv" ]:
# we need to fetch the kernel/initrd to do this
download = "/var/lib/xen"
elif self.virt_type in [ "xenfv", "vmware", "vmwarew" ] :
# we are downloading sufficient metadata to initiate PXE, no D/L needed
download = None
else: # qemu
# fullvirt, can use set_location in virtinst library, no D/L needed yet
download = None
# download required files
if not self.is_display and download is not None:
self.get_distro_files(profile_data, download)
# perform specified action
after_download(self, profile_data)
#---------------------------------------------------
def get_install_tree_from_kickstart(self,profile_data):
"""
Scan the kickstart configuration for either a "url" or "nfs" command
take the install_tree url from that
"""
if profile_data["breed"] == "suse":
kopts = profile_data["kernel_options"]
options = kopts.split(" ")
profile_data["install_tree"] = ""
for opt in options:
if opt.startswith("install="):
profile_data["install_tree"] = opt.replace("install=","")
break
else:
try:
if profile_data["kickstart"][:4] == "http":
if not self.system:
url_fmt = "http://%s/cblr/svc/op/ks/profile/%s"
else:
url_fmt = "http://%s/cblr/svc/op/ks/system/%s"
url = url_fmt % (self.server, profile_data['name'])
else:
url = profile_data["kickstart"]
raw = utils.urlread(url)
lines = raw.splitlines()
method_re = re.compile('(?P<urlcmd>\s*url\s.*)|(?P<nfscmd>\s*nfs\s.*)')
url_parser = OptionParser()
url_parser.add_option("--url", dest="url")
url_parser.add_option("--proxy", dest="proxy")
nfs_parser = OptionParser()
nfs_parser.add_option("--dir", dest="dir")
nfs_parser.add_option("--server", dest="server")
for line in lines:
match = method_re.match(line)
if match:
cmd = match.group("urlcmd")
if cmd:
(options,args) = url_parser.parse_args(shlex.split(cmd)[1:])
profile_data["install_tree"] = options.url
break
cmd = match.group("nfscmd")
if cmd:
(options,args) = nfs_parser.parse_args(shlex.split(cmd)[1:])
profile_data["install_tree"] = "nfs://%s:%s" % (options.server,options.dir)
break
if self.safe_load(profile_data,"install_tree"):
print "install_tree:", profile_data["install_tree"]
else:
print "warning: kickstart found but no install_tree found"
except:
# unstable to download the kickstart, however this might not
# be an error. For instance, xen FV installations of non
# kickstart OS's...
pass
#---------------------------------------------------
def get_install_tree_for_debian_ubuntu(self, profile_data):
"""
Split ks_meta to obtain the tree path. Generate the install_tree
using the http_server and the tree obtained from splitting ks_meta
"""
try:
tree = profile_data["ks_meta"].split()
# Ensure we only take the tree in case ks_meta args are passed
# First check for tree= in ks_meta arguments
meta_re=re.compile('tree=')
tree_found=''
for entry in tree:
if meta_re.match(entry):
tree_found=entry.split("=")[-1]
break
if tree_found=='':
# assume tree information as first argument
tree = tree.split()[0]
else:
tree=tree_found
tree_re = re.compile ('(http|ftp|nfs):')
# Next check for installation tree on remote server
if tree_re.match(tree):
tree = tree.replace("@@http_server@@", profile_data["http_server"])
profile_data["install_tree"] = tree
else:
# Now take the first parameter as the local path
profile_data["install_tree"] = "http://" + profile_data["http_server"] + tree
if self.safe_load(profile_data,"install_tree"):
print "install_tree:", profile_data["install_tree"]
else:
print "warning: kickstart found but no install_tree found"
except:
pass
#---------------------------------------------------
def list(self,what):
if what not in [ "images", "profiles", "systems", "distros", "repos" ]:
raise InfoException("koan does not know how to list that")
data = self.get_data(what)
for x in data:
if x.has_key("name"):
print x["name"]
return True
#---------------------------------------------------
def display(self):
def after_download(self, profile_data):
for x in DISPLAY_PARAMS:
if profile_data.has_key(x):
value = profile_data[x]
if x == 'kernel_options':
value = self.calc_kernel_args(profile_data)
print "%20s : %s" % (x, value)
return self.net_install(after_download)
#---------------------------------------------------
def virt(self):
"""
Handle virt provisioning.
"""
def after_download(self, profile_data):
self.virt_net_install(profile_data)
return self.net_install(after_download)
#---------------------------------------------------
def update_files(self):
"""
Contact the cobbler server and wget any config-management
files in cobbler that we are providing to nodes. Basically
this turns cobbler into a lighweight configuration management
system for folks who are not needing a more complex CMS.
Read more at:
https://github.com/cobbler/cobbler/wiki/Built-in-configuration-management
"""
# FIXME: make this a utils.py function
if self.profile:
profile_data = self.get_data("profile",self.profile)
elif self.system:
profile_data = self.get_data("system",self.system)
elif self.image:
profile_data = self.get_data("image",self.image)
else:
# shouldn't end up here, right?
profile_data = {}
# BOOKMARK
template_files = profile_data["template_files"]
template_files = utils.input_string_or_hash(template_files)
template_keys = template_files.keys()
print "- template map: %s" % template_files
print "- processing for files to download..."
for src in template_keys:
dest = template_files[src]
save_as = dest
dest = dest.replace("_","__")
dest = dest.replace("/","_")
if not save_as.startswith("/"):
# this is a file in the template system that is not to be downloaded
continue
print "- file: %s" % save_as
pattern = "http://%s/cblr/svc/op/template/%s/%s/path/%s"
if profile_data.has_key("interfaces"):
url = pattern % (profile_data["http_server"],"system",profile_data["name"],dest)
else:
url = pattern % (profile_data["http_server"],"profile",profile_data["name"],dest)
if not os.path.exists(os.path.dirname(save_as)):
os.makedirs(os.path.dirname(save_as))
cmd = [ "/usr/bin/wget", url, "--output-document", save_as ]
utils.subprocess_call(cmd)
return True
#---------------------------------------------------
def update_config(self):
"""
Contact the cobbler server and update the system configuration using
cobbler's built-in configuration management. Configs are based on
a combination of mgmt-classes assigned to the system, profile, and
distro.
"""
# FIXME get hostname from utils?
hostname = socket.gethostname()
server = self.xmlrpc_server
try:
config = server.get_config_data(hostname)
except:
traceback.print_exc()
self.connect_fail()
# FIXME should we version this, maybe append a timestamp?
node_config_data = "/var/lib/koan/config/localconfig.json"
f = open(node_config_data, 'w')
f.write(config)
f.close()
print "- Starting configuration run for %s" % (hostname)
runtime_start = time.time()
configure = configurator.KoanConfigure(config)
stats = configure.run()
runtime_end = time.time()
if self.summary:
pstats = (stats["pkg"]['nsync'],stats["pkg"]['osync'],stats["pkg"]['fail'],stats["pkg"]['runtime'])
dstats = (stats["dir"]['nsync'],stats["dir"]['osync'],stats["dir"]['fail'],stats["dir"]['runtime'])
fstats = (stats["files"]['nsync'],stats["files"]['osync'],stats["files"]['fail'],stats["files"]['runtime'])
nsync = pstats[0] + dstats[0] + fstats[0]
osync = pstats[1] + dstats[1] + fstats[1]
fail = pstats[2] + dstats[2] + fstats[2]
total_resources = (nsync + osync + fail)
total_runtime = (runtime_end - runtime_start)
print
print "\tResource Report"
print "\t-------------------------"
print "\t In Sync: %d" % nsync
print "\tOut of Sync: %d" % osync
print "\t Fail: %d" % fail
print "\t-------------------------"
print "\tTotal Resources: %d" % total_resources
print "\t Total Runtime: %.02f" % total_runtime
for status in ["repos_status", "ldap_status", "monit_status"]:
if status in stats:
print
print "\t%s" % status
print "\t-------------------------"
print "\t%s" % stats[status]
print "\t-------------------------"
print
print "\tResource |In Sync|OO Sync|Failed|Runtime"
print "\t----------------------------------------"
print "\t Packages: %d %d %d %.02f" % pstats
print "\t Directories: %d %d %d %.02f" % dstats
print "\t Files: %d %d %d %.02f" % fstats
print
#---------------------------------------------------
def kexec_replace(self):
"""
Prepare to morph existing system by downloading new kernel and initrd
and preparing kexec to execute them. Allow caller to do final 'kexec
-e' invocation; this allows modules such as network drivers to be
unloaded (for cases where an immediate kexec would leave the driver in
an invalid state.
"""
def after_download(self, profile_data):
k_args = self.calc_kernel_args(profile_data)
kickstart = self.safe_load(profile_data,'kickstart')
arch = self.safe_load(profile_data,'arch')
(make, version) = utils.os_release()
if (make == "centos" and version < 7) or (make == "redhat" and version < 7) or (make == "fedora" and version < 10):
# embed the initrd in the kickstart file because of libdhcp and/or pump
# needing the help due to some DHCP timeout potential in some certain
# network configs.
if self.embed_kickstart:
self.build_initrd(
self.safe_load(profile_data,'initrd_local'),
kickstart,
profile_data
)
# Validate kernel argument length (limit depends on architecture --
# see asm-*/setup.h). For example:
# asm-i386/setup.h:#define COMMAND_LINE_SIZE 256
# asm-ia64/setup.h:#define COMMAND_LINE_SIZE 512
# asm-powerpc/setup.h:#define COMMAND_LINE_SIZE 512
# asm-s390/setup.h:#define COMMAND_LINE_SIZE 896
# asm-x86_64/setup.h:#define COMMAND_LINE_SIZE 256
# arch/x86/include/asm/setup.h:#define COMMAND_LINE_SIZE 2048
if arch.startswith("ppc") or arch.startswith("ia64"):
if len(k_args) > 511:
raise InfoException, "Kernel options are too long, 512 chars exceeded: %s" % k_args
elif arch.startswith("s390"):
if len(k_args) > 895:
raise InfoException, "Kernel options are too long, 896 chars exceeded: %s" % k_args
elif len(k_args) > 2048:
raise InfoException, "Kernel options are too long, 2048 chars exceeded: %s" % k_args
utils.subprocess_call([
'kexec',
'--load',
'--initrd=%s' % (self.safe_load(profile_data,'initrd_local'),),
'--command-line=%s' % (k_args,),
self.safe_load(profile_data,'kernel_local')
])
print "Kernel loaded; run 'kexec -e' to execute"
return self.net_install(after_download)
#---------------------------------------------------
def get_boot_loader_info(self):
if ANCIENT_PYTHON:
# FIXME: implement this to work w/o subprocess
if os.path.exists("/etc/grub.conf"):
return (0, "grub")
else:
return (0, "lilo")
cmd = [ "/sbin/grubby", "--bootloader-probe" ]
probe_process = sub_process.Popen(cmd, stdout=sub_process.PIPE)
which_loader = probe_process.communicate()[0]
return probe_process.returncode, which_loader
def replace(self):
"""
Handle morphing an existing system through downloading new
kernel, new initrd, and installing a kickstart in the initrd,
then manipulating grub.
"""
try:
shutil.rmtree("/var/spool/koan")
except OSError, (err, msg):
if err != errno.ENOENT:
raise
try:
os.makedirs("/var/spool/koan")
except OSError, (err, msg):
if err != errno.EEXIST:
raise
def after_download(self, profile_data):
use_grubby = False
use_grub2 = False
(make, version) = utils.os_release()
if make in ['ubuntu', 'debian']:
if not os.path.exists("/usr/sbin/update-grub"):
raise InfoException, "grub2 is not installed"
use_grub2 = True
else:
if not os.path.exists("/sbin/grubby"):
raise InfoException, "grubby is not installed"
use_grubby = True
k_args = self.calc_kernel_args(profile_data,replace_self=1)
kickstart = self.safe_load(profile_data,'kickstart')
if (make == "centos" and version < 7) or (make == "redhat" and version < 7) or (make == "fedora" and version < 10):
# embed the initrd in the kickstart file because of libdhcp and/or pump
# needing the help due to some DHCP timeout potential in some certain
# network configs.
if self.embed_kickstart:
self.build_initrd(
self.safe_load(profile_data,'initrd_local'),
kickstart,
profile_data
)
if not ANCIENT_PYTHON:
arch_cmd = sub_process.Popen("/bin/uname -m", stdout=sub_process.PIPE, shell=True)
arch = arch_cmd.communicate()[0]
else:
arch = "i386"
# Validate kernel argument length (limit depends on architecture --
# see asm-*/setup.h). For example:
# asm-i386/setup.h:#define COMMAND_LINE_SIZE 256
# asm-ia64/setup.h:#define COMMAND_LINE_SIZE 512
# asm-powerpc/setup.h:#define COMMAND_LINE_SIZE 512
# asm-s390/setup.h:#define COMMAND_LINE_SIZE 896
# asm-x86_64/setup.h:#define COMMAND_LINE_SIZE 256
# arch/x86/include/asm/setup.h:#define COMMAND_LINE_SIZE 2048
if not ANCIENT_PYTHON:
if arch.startswith("ppc") or arch.startswith("ia64"):
if len(k_args) > 511:
raise InfoException, "Kernel options are too long, 512 chars exceeded: %s" % k_args
elif arch.startswith("s390"):
if len(k_args) > 895:
raise InfoException, "Kernel options are too long, 896 chars exceeded: %s" % k_args
elif len(k_args) > 2048:
raise InfoException, "Kernel options are too long, 2048 chars exceeded: %s" % k_args
if use_grubby:
cmd = [ "/sbin/grubby",
"--add-kernel", self.safe_load(profile_data,'kernel_local'),
"--initrd", self.safe_load(profile_data,'initrd_local'),
"--args", "\"%s\"" % k_args
]
if not self.no_copy_default:
cmd.append("--copy-default")
boot_probe_ret_code, probe_output = self.get_boot_loader_info()
if boot_probe_ret_code == 0 and string.find(probe_output, "lilo") >= 0:
cmd.append("--lilo")
if self.add_reinstall_entry:
cmd.append("--title=Reinstall")
else:
cmd.append("--make-default")
cmd.append("--title=kick%s" % int(time.time()))
if self.live_cd:
cmd.append("--bad-image-okay")
cmd.append("--boot-filesystem=/")
cmd.append("--config-file=/tmp/boot/boot/grub/grub.conf")
# Are we running on ppc?
if not ANCIENT_PYTHON:
if arch.startswith("ppc"):
cmd.append("--yaboot")
elif arch.startswith("s390"):
cmd.append("--zipl")
utils.subprocess_call(cmd)
# Any post-grubby processing required (e.g. ybin, zipl, lilo)?
if not ANCIENT_PYTHON and arch.startswith("ppc"):
# FIXME - CHRP hardware uses a 'PPC PReP Boot' partition and doesn't require running ybin
print "- applying ybin changes"
cmd = [ "/sbin/ybin" ]
utils.subprocess_call(cmd)
elif not ANCIENT_PYTHON and arch.startswith("s390"):
print "- applying zipl changes"
cmd = [ "/sbin/zipl" ]
utils.subprocess_call(cmd)
else:
# if grubby --bootloader-probe returns lilo,
# apply lilo changes
if boot_probe_ret_code == 0 and string.find(probe_output, "lilo") != -1:
print "- applying lilo changes"
cmd = [ "/sbin/lilo" ]
utils.subprocess_call(cmd)
elif use_grub2:
# Use grub2 for --replace-self
kernel_local = self.safe_load(profile_data,'kernel_local')
initrd_local = self.safe_load(profile_data,'initrd_local')
# Set name for grub2 menuentry
if self.add_reinstall_entry:
name = "Reinstall: %s" % profile_data['name']
else:
name = "%s" % profile_data['name']
# Set paths for Ubuntu/Debian
# TODO: Add support for other distros when they ship grub2
if make in ['ubuntu', 'debian']:
grub_file = "/etc/grub.d/42_koan"
grub_default_file = "/etc/default/grub"
cmd = ["update-grub"]
default_cmd = ['sed', '-i', 's/^GRUB_DEFAULT\=.*$/GRUB_DEFAULT="%s"/g' % name, grub_default_file]
# Create grub2 menuentry
grub_entry = """
cat <<EOF
menuentry "%s" {
linux %s %s
initrd %s
}
EOF
""" % (name, kernel_local, k_args, initrd_local)
# Save grub2 menuentry
fd = open(grub_file,"w")
fd.write(grub_entry)
fd.close()
os.chmod(grub_file, 0755)
# Set default grub entry for reboot
if not self.add_reinstall_entry:
print "- setting grub2 default entry"
sub_process.call(default_cmd)
# Run update-grub
utils.subprocess_call(cmd)
if not self.add_reinstall_entry:
print "- reboot to apply changes"
else:
print "- reinstallation entry added"
return self.net_install(after_download)
#---------------------------------------------------
def get_insert_script(self,initrd):
"""
Create bash script for inserting kickstart into initrd.
Code heavily borrowed from internal auto-ks scripts.
"""
return r"""
cd /var/spool/koan
mkdir initrd
gzip -dc %s > initrd.tmp || xz -dc %s > initrd.tmp
if mount -o loop -t ext2 initrd.tmp initrd >&/dev/null ; then
cp ks.cfg initrd/
ln initrd/ks.cfg initrd/tmp/ks.cfg
umount initrd
gzip -c initrd.tmp > initrd_final
else
echo "mount failed; treating initrd as a cpio archive..."
cd initrd
cpio -id <../initrd.tmp
cp /var/spool/koan/ks.cfg .
ln ks.cfg tmp/ks.cfg
find . | cpio -o -H newc | gzip -9 > ../initrd_final
echo "...done"
fi
""" % initrd
#---------------------------------------------------
def build_initrd(self,initrd,kickstart,data):
"""
Crack open an initrd and install the kickstart file.
"""
# save kickstart to file
ksdata = utils.urlread(kickstart)
fd = open("/var/spool/koan/ks.cfg","w+")
if ksdata is not None:
fd.write(ksdata)
fd.close()
# handle insertion of kickstart based on type of initrd
fd = open("/var/spool/koan/insert.sh","w+")
fd.write(self.get_insert_script(initrd))
fd.close()
utils.subprocess_call([ "/bin/bash", "/var/spool/koan/insert.sh" ])
shutil.copyfile("/var/spool/koan/initrd_final", initrd)
#---------------------------------------------------
def connect_fail(self):
raise InfoException, "Could not communicate with %s:%s" % (self.server, self.port)
#---------------------------------------------------
def get_data(self,what,name=None):
try:
if what[-1] == "s":
data = getattr(self.xmlrpc_server, "get_%s" % what)()
else:
data = getattr(self.xmlrpc_server, "get_%s_for_koan" % what)(name)
except:
traceback.print_exc()
self.connect_fail()
if data == {}:
raise InfoException("No entry/entries found")
return data
#---------------------------------------------------
def get_ips(self,strdata):
"""
Return a list of IP address strings found in argument.
warning: not IPv6 friendly
"""
return re.findall(r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}',strdata)
#---------------------------------------------------
def get_macs(self,strdata):
"""
Return a list of MAC address strings found in argument.
"""
return re.findall(r'[A-F0-9]{2}:[A-F0-9]{2}:[A-F0-9]{2}:[A-F0-9]{2}:[A-F:0-9]{2}:[A-F:0-9]{2}', strdata.upper())
#---------------------------------------------------
def is_ip(self,strdata):
"""
Is strdata an IP?
warning: not IPv6 friendly
"""
return self.get_ips(strdata) and True or False
#---------------------------------------------------
def is_mac(self,strdata):
"""
Return whether the argument is a mac address.
"""
return self.get_macs(strdata) and True or False
#---------------------------------------------------
def get_distro_files(self,profile_data, download_root):
"""
Using distro data (fetched from bootconf tree), determine
what kernel and initrd to download, and save them locally.
"""
os.chdir(download_root)
distro = self.safe_load(profile_data,'distro')
kernel = self.safe_load(profile_data,'kernel')
initrd = self.safe_load(profile_data,'initrd')
kernel_short = os.path.basename(kernel)
initrd_short = os.path.basename(initrd)
kernel_save = "%s/%s_koan" % (download_root, kernel_short)
initrd_save = "%s/%s_koan" % (download_root, initrd_short)
if self.server:
if kernel[0] == "/":
kernel = "http://%s/cobbler/images/%s/%s" % (profile_data["http_server"], distro, kernel_short)
if initrd[0] == "/":
initrd = "http://%s/cobbler/images/%s/%s" % (profile_data["http_server"], distro, initrd_short)
try:
print "downloading initrd %s to %s" % (initrd_short, initrd_save)
print "url=%s" % initrd
utils.urlgrab(initrd,initrd_save)
print "downloading kernel %s to %s" % (kernel_short, kernel_save)
print "url=%s" % kernel
utils.urlgrab(kernel,kernel_save)
except:
traceback.print_exc()
raise InfoException, "error downloading files"
profile_data['kernel_local'] = kernel_save
profile_data['initrd_local'] = initrd_save
#---------------------------------------------------
def calc_kernel_args(self, pd, replace_self=0):
kickstart = self.safe_load(pd,'kickstart')
options = self.safe_load(pd,'kernel_options',default='')
breed = self.safe_load(pd,'breed')
kextra = ""
if kickstart is not None and kickstart != "":
if breed is not None and breed == "suse":
kextra = "autoyast=" + kickstart
elif breed is not None and breed == "debian" or breed =="ubuntu":
kextra = "auto-install/enable=true priority=critical url=" + kickstart
else:
kextra = "ks=" + kickstart
if options !="":
kextra = kextra + " " + options
# parser issues? lang needs a trailing = and somehow doesn't have it.
# convert the from-cobbler options back to a hash
# so that we can override it in a way that works as intended
hashv = utils.input_string_or_hash(kextra)
if self.static_interface is not None and (breed == "redhat" or breed == "suse" or breed == "debian" or breed == "ubuntu"):
interface_name = self.static_interface
interfaces = self.safe_load(pd, "interfaces")
if interface_name.startswith("eth"):
alt_interface_name = interface_name.replace("eth", "intf")
interface_data = self.safe_load(interfaces, interface_name, alt_interface_name)
else:
interface_data = self.safe_load(interfaces, interface_name)
ip = self.safe_load(interface_data, "ip_address")
netmask = self.safe_load(interface_data, "netmask")
gateway = self.safe_load(pd, "gateway")
dns = self.safe_load(pd, "name_servers")
if breed == "debian" or breed == "ubuntu":
hostname = self.safe_load(pd, "hostname")
name = self.safe_load(pd, "name")
if hostname != "" or name != "":
if hostname != "":
# if this is a FQDN, grab the first bit
my_hostname = hostname.split(".")[0]
_domain = hostname.split(".")[1:]
if _domain:
my_domain = ".".join(_domain)
else:
my_hostname = name.split(".")[0]
_domain = name.split(".")[1:]
if _domain:
my_domain = ".".join(_domain)
hashv["hostname"] = my_hostname
hashv["domain"] = my_domain
if breed == "suse":
hashv["netdevice"] = self.static_interface
else:
hashv["ksdevice"] = self.static_interface
if ip is not None:
if breed == "suse":
hashv["hostip"] = ip
elif breed == "debian" or breed == "ubuntu":
hashv["netcfg/get_ipaddress"] = ip
else:
hashv["ip"] = ip
if netmask is not None:
if breed == "debian" or breed == "ubuntu":
hashv["netcfg/get_netmask"] = netmask
else:
hashv["netmask"] = netmask
if gateway is not None:
if breed == "debian" or breed == "ubuntu":
hashv["netcfg/get_gateway"] = gateway
else:
hashv["gateway"] = gateway
if dns is not None:
if breed == "suse":
hashv["nameserver"] = dns[0]
elif breed == "debian" or breed == "ubuntu":
hashv["netcfg/get_nameservers"] = " ".join(dns)
else:
hashv["dns"] = ",".join(dns)
if replace_self and self.embed_kickstart:
hashv["ks"] = "file:ks.cfg"
if self.kopts_override is not None:
hash2 = utils.input_string_or_hash(self.kopts_override)
hashv.update(hash2)
options = utils.hash_to_string(hashv)
options = string.replace(options, "lang ","lang= ")
# if using ksdevice=bootif that only works for PXE so replace
# it with something that will work
options = string.replace(options, "ksdevice=bootif","ksdevice=link")
return options
#---------------------------------------------------
def virt_net_install(self,profile_data):
"""
Invoke virt guest-install (or tweaked copy thereof)
"""
pd = profile_data
self.load_virt_modules()
arch = self.safe_load(pd,'arch','x86')
kextra = self.calc_kernel_args(pd)
(uuid, create_func, fullvirt, can_poll) = self.virt_choose(pd)
virtname = self.calc_virt_name(pd)
ram = self.calc_virt_ram(pd)
vcpus = self.calc_virt_cpus(pd)
path_list = self.calc_virt_path(pd, virtname)
size_list = self.calc_virt_filesize(pd)
driver_list = self.calc_virt_drivers(pd)
if self.virt_type == 'openvz':
disks = None
else:
disks = self.merge_disk_data(path_list,size_list,driver_list)
virt_auto_boot = self.calc_virt_autoboot(pd, self.virt_auto_boot)
virt_pxe_boot = self.calc_virt_pxeboot(pd, self.virt_pxe_boot)
results = create_func(
name = virtname,
ram = ram,
disks = disks,
uuid = uuid,
extra = kextra,
vcpus = vcpus,
profile_data = profile_data,
arch = arch,
no_gfx = self.no_gfx,
fullvirt = fullvirt,
bridge = self.virt_bridge,
virt_type = self.virt_type,
virt_auto_boot = virt_auto_boot,
virt_pxe_boot = virt_pxe_boot,
qemu_driver_type = self.qemu_disk_type,
qemu_net_type = self.qemu_net_type,
qemu_machine_type = self.qemu_machine_type,
wait = self.virtinstall_wait,
noreboot = self.virtinstall_noreboot,
osimport = self.virtinstall_osimport,
)
#print results
if can_poll is not None and self.should_poll:
import libvirt
print "- polling for virt completion"
conn = None
if can_poll == "xen":
conn = libvirt.open(None)
elif can_poll == "qemu":
conn = libvirt.open("qemu:///system")
else:
raise InfoException("Don't know how to poll this virt-type")
ct = 0
while True:
time.sleep(3)
state = utils.get_vm_state(conn, virtname)
if state == "running":
print "- install is still running, sleeping for 1 minute (%s)" % ct
ct = ct + 1
time.sleep(60)
elif state == "crashed":
print "- the install seems to have crashed."
return "failed"
elif state == "shutdown":
print "- shutdown VM detected, is the install done? Restarting!"
utils.find_vm(conn, virtname).create()
return results
else:
raise InfoException("internal error, bad virt state")
if virt_auto_boot:
if self.virt_type in [ "xenpv", "xenfv" ]:
if not utils.create_xendomains_symlink(virtname):
print "- warning: failed to setup autoboot for %s, it will have to be configured manually" % virtname
elif self.virt_type in [ "qemu", "kvm" ]:
utils.libvirt_enable_autostart(virtname)
elif self.virt_type in [ "openvz" ]:
pass
else:
print "- warning: don't know how to autoboot this virt type yet"
# else...
return results
#---------------------------------------------------
def load_virt_modules(self):
try:
import xencreate
import qcreate
import imagecreate
except:
traceback.print_exc()
raise InfoException("no virtualization support available, install python-virtinst or virt-install?")
#---------------------------------------------------
def virt_choose(self, pd):
fullvirt = False
can_poll = None
if (self.image is not None) and (pd["image_type"] == "virt-clone"):
fullvirt = True
uuid = None
import imagecreate
creator = imagecreate.start_install
elif self.virt_type in [ "xenpv", "xenfv" ]:
uuid = self.get_uuid(self.calc_virt_uuid(pd))
import xencreate
creator = xencreate.start_install
if self.virt_type == "xenfv":
fullvirt = True
can_poll = "xen"
elif self.virt_type in [ "qemu", "kvm" ] :
fullvirt = True
uuid = None
import qcreate
creator = qcreate.start_install
can_poll = "qemu"
elif self.virt_type == "vmware":
import vmwcreate
uuid = None
creator = vmwcreate.start_install
elif self.virt_type == "vmwarew":
import vmwwcreate
uuid = None
creator = vmwwcreate.start_install
elif self.virt_type == "openvz":
import openvzcreate
uuid = None
creator = openvzcreate.start_install
else:
raise InfoException, "Unspecified virt type: %s" % self.virt_type
return (uuid, creator, fullvirt, can_poll)
#---------------------------------------------------
def merge_disk_data(self, paths, sizes, drivers):
counter = 0
disks = []
for p in paths:
path = paths[counter]
if counter >= len(sizes):
size = sizes[-1]
else:
size = sizes[counter]
if counter >= len(drivers):
driver = drivers[-1]
else:
driver = drivers[counter]
disks.append([path,size,driver])
counter = counter + 1
if len(disks) == 0:
print "paths: ", paths
print "sizes: ", sizes
print "drivers: ", drivers
raise InfoException, "Disk configuration not resolvable!"
return disks
#---------------------------------------------------
def calc_virt_name(self,profile_data):
if self.virt_name is not None:
# explicit override
name = self.virt_name
elif profile_data.has_key("interfaces"):
# this is a system object, just use the name
name = profile_data["name"]
else:
# just use the time, we used to use the MAC
# but that's not really reliable when there are more
# than one.
name = time.ctime(time.time())
# keep libvirt happy with the names
return name.replace(":","_").replace(" ","_")
#--------------------------------------------------
def calc_virt_autoboot(self,data,override_autoboot=False):
if override_autoboot:
return True
autoboot = self.safe_load(data,'virt_auto_boot',0)
autoboot = str(autoboot).lower()
if autoboot in [ "1", "true", "y", "yes" ]:
return True
return False
#--------------------------------------------------
def calc_virt_pxeboot(self,data,override_pxeboot=False):
if override_pxeboot:
return True
pxeboot = self.safe_load(data,'virt_pxe_boot',0)
pxeboot = str(pxeboot).lower()
if pxeboot in [ "1", "true", "y", "yes" ]:
return True
return False
#--------------------------------------------------
def calc_virt_filesize(self,data,default_filesize=0):
# MAJOR FIXME: are there overrides?
size = self.safe_load(data,'virt_file_size','xen_file_size',0)
tokens = str(size).split(",")
accum = []
for t in tokens:
accum.append(self.calc_virt_filesize2(data,size=t))
return accum
#---------------------------------------------------
def calc_virt_filesize2(self,data,default_filesize=1,size=0):
"""
Assign a virt filesize if none is given in the profile.
"""
err = False
try:
int(size)
except:
err = True
if size is None or size == '':
err = True
if err:
print "invalid file size specified, using defaults"
return default_filesize
return int(size)
#---------------------------------------------------
def calc_virt_drivers(self,data):
driver = self.safe_load(data,'virt_disk_driver',default='raw')
tokens = driver.split(",")
accum = []
for t in tokens:
# FIXME: this list should be pulled out of
# the virtinst VirtualDisk class, but
# not all versions of virtinst have a
# nice list to use
if t in ('raw', 'qcow', 'qcow2', 'aio', 'vmdk', 'qed'):
accum.append(t)
else:
print "invalid disk driver specified, defaulting to 'raw'"
accum.append('raw')
return accum
#---------------------------------------------------
def calc_virt_ram(self,data,default_ram=64):
"""
Assign a virt ram size if none is given in the profile.
"""
size = self.safe_load(data,'virt_ram','xen_ram',0)
err = False
try:
int(size)
except:
err = True
if size is None or size == '' or int(size) < default_ram:
err = True
if err:
print "invalid RAM size specified, using defaults."
return default_ram
return int(size)
#---------------------------------------------------
def calc_virt_cpus(self,data,default_cpus=1):
"""
Assign virtual CPUs if none is given in the profile.
"""
size = self.safe_load(data,'virt_cpus',default=default_cpus)
try:
isize = int(size)
except:
traceback.print_exc()
return default_cpus
return isize
#---------------------------------------------------
def calc_virt_mac(self,data):
if not self.is_virt:
return None # irrelevant
if self.is_mac(self.system):
return self.system.upper()
return self.random_mac()
#---------------------------------------------------
def calc_virt_uuid(self,data):
# TODO: eventually we may want to allow some koan CLI
# option (or cobbler system option) for passing in the UUID.
# Until then, it's random.
return None
"""
Assign a UUID if none/invalid is given in the profile.
"""
my_id = self.safe_load(data,'virt_uuid','xen_uuid',0)
uuid_re = re.compile('[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}')
err = False
try:
str(my_id)
except:
err = True
if my_id is None or my_id == '' or not uuid_re.match(id):
err = True
if err and my_id is not None:
print "invalid UUID specified. randomizing..."
return None
return my_id
#----------------------------------------------------
def calc_virt_path(self,pd,name):
# input is either a single item or a string list
# it's not in the arguments to this function .. it's from one of many
# potential sources
location = self.virt_path
if location is None:
# no explicit CLI override, what did the cobbler server say?
location = self.safe_load(pd, 'virt_path', default=None)
if location is None or location == "":
# not set in cobbler either? then assume reasonable defaults
if self.virt_type in [ "xenpv", "xenfv" ]:
prefix = "/var/lib/xen/images/"
elif self.virt_type in [ "qemu", "kvm" ]:
prefix = "/var/lib/libvirt/images/"
elif self.virt_type == "vmwarew":
prefix = "/var/lib/vmware/%s/" % name
else:
prefix = "/var/lib/vmware/images/"
if not os.path.exists(prefix):
print "- creating: %s" % prefix
os.makedirs(prefix)
return [ "%s/%s-disk0" % (prefix, name) ]
# ok, so now we have a user that either through cobbler or some other
# source *did* specify a location. It might be a list.
virt_sizes = self.calc_virt_filesize(pd)
path_splitted = location.split(",")
paths = []
count = -1
for x in path_splitted:
count = count + 1
path = self.calc_virt_path2(pd,name,offset=count,location=x,sizes=virt_sizes)
paths.append(path)
return paths
#---------------------------------------------------
def calc_virt_path2(self,pd,name,offset=0,location=None,sizes=[]):
# Parse the command line to determine if this is a
# path, a partition, or a volume group parameter
# file Ex: /foo
# partition Ex: /dev/foo
# volume-group Ex: vg-name(:lv-name)
#
# chosing the disk image name (if applicable) is somewhat
# complicated ...
# use default location for the virt type
if not location.startswith("/dev/") and location.startswith("/"):
# filesystem path
if os.path.isdir(location):
return "%s/%s-disk%s" % (location, name, offset)
elif not os.path.exists(location) and os.path.isdir(os.path.dirname(location)):
return location
else:
if self.force_path:
return location
else:
raise InfoException, "The location %s is an existing file. Consider '--force-path' to overwrite it." % location
elif location.startswith("/dev/"):
# partition
if os.path.exists(location):
return location
else:
raise InfoException, "virt path is not a valid block device"
else:
# it's a volume group, verify that it exists
if location.find(':') == -1:
vgname = location
lvname = "%s-disk%s" % (name,offset)
else:
vgname, lvname = location.split(':')[:2]
args = "vgs -o vg_name"
print "%s" % args
vgnames = sub_process.Popen(args, shell=True, stdout=sub_process.PIPE).communicate()[0]
print vgnames
if vgnames.find(vgname) == -1:
raise InfoException, "The volume group [%s] does not exist." % vgname
# check free space
args = "LANG=C vgs --noheadings -o vg_free --units g %s" % vgname
print args
cmd = sub_process.Popen(args, stdout=sub_process.PIPE, shell=True)
freespace_str = cmd.communicate()[0]
freespace_str = freespace_str.split("\n")[0].strip()
freespace_str = freespace_str.lower().replace("g","").replace(',', '.') # remove gigabytes
print "(%s)" % freespace_str
freespace = int(float(freespace_str))
virt_size = self.calc_virt_filesize(pd)
if len(virt_size) > offset:
virt_size = sizes[offset]
else:
return sizes[-1]
if freespace >= int(virt_size):
# look for LVM partition named foo, create if doesn't exist
args = "lvs --noheadings -o lv_name %s" % vgname
print "%s" % args
lvs_str=sub_process.Popen(args, stdout=sub_process.PIPE, shell=True).communicate()[0]
print lvs_str
# have to create it?
found_lvs = False
for lvs in lvs_str.split("\n"):
if lvs.strip() == lvname:
found_lvs = True
break
if not found_lvs:
args = "lvcreate -L %sG -n %s %s" % (virt_size, lvname, vgname)
print "%s" % args
lv_create = sub_process.call(args, shell=True)
if lv_create != 0:
raise InfoException, "LVM creation failed"
# partition location
partition_location = "/dev/mapper/%s-%s" % (vgname.replace('-','--'),lvname.replace('-','--'))
# check whether we have SELinux enabled system
args = "/usr/sbin/selinuxenabled"
if os.path.exists(args) and sub_process.call(args) == 0:
# required context type
context_type = "virt_image_t"
# change security context type to required one
args = "/usr/bin/chcon -t %s %s" % (context_type, partition_location)
print "%s" % args
change_context = sub_process.call(args, close_fds=True, shell=True)
# modify SELinux policy in order to preserve security context
# between reboots
args = "/usr/sbin/semanage fcontext -a -t %s %s" % (context_type, partition_location)
print "%s" % args
change_context |= sub_process.call(args, close_fds=True, shell=True)
if change_context != 0:
raise InfoException, "SELinux security context setting to LVM partition failed"
# return partition location
return partition_location
else:
raise InfoException, "volume group needs %s GB free space." % virt_size
def randomUUID(self):
"""
Generate a random UUID. Copied from xend/uuid.py
"""
rc = []
for x in range(0, 16):
rc.append(random.randint(0,255))
return rc
def uuidToString(self, u):
"""
return uuid as a string
"""
return "-".join(["%02x" * 4, "%02x" * 2, "%02x" * 2, "%02x" * 2,
"%02x" * 6]) % tuple(u)
def get_uuid(self,uuid):
"""
return the passed-in uuid, or a random one if it's not set.
"""
if uuid:
return uuid
return self.uuidToString(self.randomUUID())
if __name__ == "__main__":
main()
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