def __init__(self, config_file):
"""Instantiate ConfigParser object. Parse configuration file."""
if config_file is None:
raise error.ConfigError('First call needs a config file')
self.config_file = config_file
ConfigParser.ConfigParser.__init__(self)
if self.read(self.config_file) == []:
raise error.ConfigError('Config file %s is missing or empty' %
self.config_file)
def items(self, section):
"""Lists items in key value pairs from a section"""
try:
result = ConfigParser.ConfigParser.items(self, section)
except ConfigParser.NoSectionError:
msg = '%s missing required [%s] section' % \
(self.config_file, section)
raise error.ConfigError(msg)
except ConfigParser.NoOptionError:
msg = '%s missing required \'<key> = <value>\' entry' % \
(self.config_file)
raise error.ConfigError(msg)
return result
def _populate_from_ldap(self):
"""Create a list of allocated IP addresses from LDAP"""
if not self.ip_ldap_search_base:
msg = 'LDAP enabled but no LDAP search base defined'
raise error.ConfigError(msg)
# Do LDAP search and populate allocated IP address store
ldap = SpokeLDAP()
dn = self.ip_ldap_search_base
search_scope = 2 # ldap.SCOPE_SUBTREE
# Filter requires a modified DHCP schema with substr match support
filter = '%s=%s*' % (self.ip_ldap_attr, self.ip_ldap_key)
attr = [self.ip_ldap_attr]
result = ldap._get_object(dn, search_scope, filter, attr)
if result['data'] == []:
msg = 'No reserved IP addresses found in LDAP'
self.log.debug(msg)
return True
# Loop through our result and build a set of allocated addresses
for item in result['data']:
# Fetch the value of the IP Address attribute
entry = item[1][self.ip_ldap_attr][0]
# Remove the string prefix
ip = entry.split(' ')[1]
# Check if ip address is in our subnet
if self.subnet.has_key(ip):
self.aloc_ips.add(ip)
msg = 'Found %s IP addreses in LDAP' % len(self.aloc_ips)
self.log.debug(msg)
def get(self, section, key, default=None):
"""Get method extended with with specific exceptions."""
try:
result = ConfigParser.ConfigParser.get(self, section, key)
except ConfigParser.NoSectionError:
if default == None:
msg = '%s missing required [%s] section' % \
(self.config_file, section)
raise error.ConfigError(msg)
result = default
except ConfigParser.NoOptionError:
if default == None:
msg = '%s missing required \'%s = <value>\' entry' % \
(self.config_file, key)
raise error.ConfigError(msg)
result = default
return result
def create(self, vm_name, vm_uuid, vm_mem, vm_cpu, vm_family, vm_storage_layout,
vm_network_layout, vm_install=False, vm_disks=None, vm_interfaces=None):
"""Define a new VM and add to hypervisor's store (does not start)."""
try:
vm_name = common.validate_hostname(vm_name)
vm_cpu = common.validate_cpu(vm_cpu)
vm_mem = common.validate_mem(vm_mem)
#vm_type = common.validate_host_type(vm_type)
vm_family = common.validate_host_family(vm_family)
#vm_extra_opts = common.is_shell_safe(vm_extra_opts)
vm_uuid = common.validate_uuid(vm_uuid)
except error.InputError as e:
self.log.error(e)
raise e
try:
self.conn.lookupByName(vm_name)
except libvirt.libvirtError:
pass
else:
msg = "Domain %s already exists, cannot create." % vm_name
raise error.AlreadyExists(msg)
# Create a UUID in hypervisor format
formatted_uuid = self._format_uuid(vm_uuid)
#-1 means XEN will give the right XenID when it starts
vm_id=-1
#Initial xml structure
doc = xml.createDoc("doc")
domain = xml.createElement(doc, "domain", {"type": vm_family})
#Variable config options
#xml.createChild(doc, domain, "arch name", None, 'i686')
xml.createChild(doc, domain, "name", None, vm_name)
xml.createChild(doc, domain, "memory", None, vm_mem)
xml.createChild(doc, domain, "currentMemory", None, vm_mem)
xml.createChild(doc, domain, "vcpu", None, vm_cpu)
xml.createChild(doc, domain, "uuid", None, formatted_uuid)
#fixed(ish) config options
os = xml.createChild(doc, domain, "os", None, None)
#ks - the below is going to have to change for 64bit
xml.createChild(doc, os, "type", {"arch": "i686"}, "hvm")
xml.createChild(doc, domain, "clock", {"offset": "utc"}, None)
xml.createChild(doc, domain, "on_poweroff", None, "destroy")
xml.createChild(doc, domain, "on_reboot", None, "restart")
xml.createChild(doc, domain, "on_crash", None, "restart")
devices = xml.createChild(doc, domain, "devices", None, None)
console = xml.createChild(doc, devices, "console", {"type": "pty"}, None)
xml.createChild(doc, console, "target", {"type": "xen", "port": "0"}, None)
#ks
#xml.createChild(doc, devices, "input", {"type": "mouse", "bus": "xen"}, None)
# TODO Change the port such that it is associated with the UUID and change listen to internal interface only
xml.createChild(doc, devices, "graphics", {"type": "vnc", "port": "-1", "autoport": "yes", "listen": "0.0.0.0"}, None)
xml.createChild(doc, devices, "emulator", None, "/usr/lib/xen/bin/qemu-dm")
# #parse disk info
# for item in vm_disks:
# #local1 means hda and vg01
# if item[0] == "local1":
# disk = xml.createChild(doc, devices, "disk", {"type": "block", "device": "disk"}, None)
# xml.createChild(doc, disk, "driver", {"name": "phy"}, None)
# xml.createChild(doc, disk, "source", {"dev": "/dev/vg01/%s" % vm_name}, None)
# xml.createChild(doc, disk, "target", {"dev": "hda", "bus": "ide"}, None)
# #local2 means hdb and vg02
# if item[0] == "local2":
# disk = xml.createChild(doc, devices, "disk", {"type": "block", "device": "disk"}, None)
# xml.createChild(doc, disk, "driver", {"name": "phy"}, None)
# xml.createChild(doc, disk, "source", {"dev": "/dev/vg01/ko-test-02"}, None)
# xml.createChild(doc, disk, "target", {"dev": "hdb", "bus": "ide"}, None)
if vm_disks is not None:
for item in vm_disks:
if item[0] == "local1":
disk = xml.createChild(doc, devices, "disk", {"type": "block", "device": "disk"}, None)
xml.createChild(doc, disk, "driver", {"name": "phy"}, None)
xml.createChild(doc, disk, "source", {"dev": "/dev/vg01/%s" % vm_name}, None)
xml.createChild(doc, disk, "target", {"dev": "hda", "bus": "ide"}, None)
#local2 means hdb and vg02
if item[0] == "local2":
disk = xml.createChild(doc, devices, "disk", {"type": "block", "device": "disk"}, None)
xml.createChild(doc, disk, "driver", {"name": "phy"}, None)
xml.createChild(doc, disk, "source", {"dev": "/dev/vg02/%s" % vm_name}, None)
xml.createChild(doc, disk, "target", {"dev": "hdb", "bus": "ide"}, None)
elif vm_storage_layout is not None:
try:
disks = self.dtypes[vm_storage_layout]
except KeyError as e:
msg = "The disk type %s is not present in config file." % e
raise error.InputError, msg
for item in disks:
item = common.validate_disks_in_conf(self.dnames[item])
hv_dev = item[0] + "/" + vm_name
dom_dev = item[1]
disk = xml.createChild(doc, devices, "disk", {"type": "block", "device": "disk"}, None)
xml.createChild(doc, disk, "driver", {"name": "phy"}, None)
xml.createChild(doc, disk, "source", {"dev": hv_dev}, None)
xml.createChild(doc, disk, "target", {"dev": dom_dev, "bus": "ide"}, None)
#parse interface info
if vm_interfaces is not None:
for interface in vm_interfaces:
#get input from interface list
bridge = int( interface[0].lstrip('breth') )
mac = interface[1]
source_interface = interface[2]
interface = xml.createChild(doc, devices, "interface", {"type": "bridge"}, None)
xml.createChild(doc, interface, "mac", {"address": mac}, None)
xml.createChild(doc, interface, "source", {"bridge": source_interface}, None)
xml.createChild(doc, interface, "script", {"path": "vif-bridge"}, None)
xml.createChild(doc, interface, "target", {"dev": "vif%i.%i" % (vm_id, bridge)}, None)
elif vm_network_layout is not None:
try:
interfaces = self.ifacedef[vm_network_layout]
except KeyError:
msg = "The interface type %s is not present in config file." % vm_network_layout
raise error.InputError(msg)
# Ensure that br0,x is done first as xen cares about order in xml.
interfaces = sorted(interfaces, key=itemgetter(0))
for interface in interfaces:
interface = common.validate_interfaces_in_conf(interface)
iface_number = int( interface[0].lstrip('breth') )
if iface_number == 0:
boot_mac = common.mac_from_uuid(vm_uuid, iface_number)
boot_int = interface[1]
mac = common.mac_from_uuid(vm_uuid, iface_number)
source_interface = interface[1]
# KS enumerate avail interfaces via facter, not remote socket op
#if not source_interface in self._all_interfaces():
# msg = "%s does not exist on this machine so we cant bridge to it!" % source_interface
# raise error.InsufficientResource, msg
interface = xml.createChild(doc, devices, "interface", {"type": "bridge"}, None)
xml.createChild(doc, interface, "mac", {"address": mac}, None)
xml.createChild(doc, interface, "source", {"bridge": source_interface}, None)
xml.createChild(doc, interface, "script", {"path": "vif-bridge"}, None)
xml.createChild(doc, interface, "target", {"dev": "vif%i.%i" % (vm_id, iface_number)}, None)
if vm_install: # Add network boot lines
xml.createChild(doc, domain, "bootloader", None, "/usr/sbin/pypxeboot" )
try:
xml.createChild(doc, domain, "bootloader_args", None, "--udhcpc=/usr/local/pkg/udhcp/sbin/udhcpc --interface=%s mac=%s --label=install-aethernet" % (boot_int, boot_mac) )
except UnboundLocalError:
msg = "In config there must be an interface br0 as the provisioning interface!"
raise error.ConfigError(msg)
else:
xml.createChild(doc, domain, "bootloader", None, "/usr/bin/pygrub" )
try:
out = self.conn.defineXML(xml.out(doc))
except Exception, e:
trace = traceback.format_exc()
raise error.LibvirtError(e, trace)
raise
hv_uri = conf.get('VM', 'hv_uri')
try:
vm_types = conf.get('VM', 'vm_types')
except:
vm_types = 'test,xen,kvm,vmware'
vm_types_re = vm_types.replace(',','|')
family = re.compile('^%s' % vm_types_re)
vm_family = family.match(hv_uri)
try:
vm_family = vm_family.group(0)
except AttributeError as e:
msg = "not using valid family in hv_uri, must be one of: %s" % vm_types
raise error.ConfigError(msg)
def store_create(vm_family, vm_name, vm_uuid, vm_mem, vm_cpu,
vm_storage_layout, vm_network_layout,
vm_install=False):
from spoke.lib.vm_storage import SpokeVMStorageXen
vms = SpokeVMStorageXen(hv_uri)
try:
result = vms.create(vm_name, vm_uuid, vm_mem, vm_cpu, vm_family,
vm_storage_layout, vm_network_layout,
vm_install)
except error.SpokeError as e:
result = common.handle_error(e)
return result