code.grnet.gr Git - ganeti-local/blob - lib/constants.py

   1 #
   2 #
   3
   4 # Copyright (C) 2006, 2007 Google Inc.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful, but
  12 # WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 # 02110-1301, USA.
  20
  21
  22 """Module holding different constants."""
  23
  24 import re
  25
  26 from ganeti import _autoconf
  27
  28 # various versions
  29 PROTOCOL_VERSION = 20
  30 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
  31 OS_API_VERSION = 10
  32 EXPORT_VERSION = 0
  33 RAPI_VERSION = 2
  34
  35
  36 # Format for CONFIG_VERSION:
  37 #   01 03 0123 = 01030123
  38 #   ^^ ^^ ^^^^
  39 #   |  |  + Configuration version/revision
  40 #   |  + Minor version
  41 #   + Major version
  42 #
  43 # It stored as an integer. Make sure not to write an octal number.
  44
  45 # BuildVersion and SplitVersion must be in here because we can't import other
  46 # modules. The cfgupgrade tool must be able to read and write version numbers
  47 # and thus requires these functions. To avoid code duplication, they're kept in
  48 # here.
  49
  50 def BuildVersion(major, minor, revision):
  51   """Calculates int version number from major, minor and revision numbers.
  52
  53   Returns: int representing version number
  54
  55   """
  56   assert isinstance(major, int)
  57   assert isinstance(minor, int)
  58   assert isinstance(revision, int)
  59   return (1000000 * major +
  60             10000 * minor +
  61                 1 * revision)
  62
  63
  64 def SplitVersion(version):
  65   """Splits version number stored in an int.
  66
  67   Returns: tuple; (major, minor, revision)
  68
  69   """
  70   assert isinstance(version, int)
  71
  72   (major, remainder) = divmod(version, 1000000)
  73   (minor, revision) = divmod(remainder, 10000)
  74
  75   return (major, minor, revision)
  76
  77
  78 CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
  79 CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
  80 CONFIG_REVISION = 0
  81 CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
  82
  83 # file paths
  84 DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti"
  85 RUN_DIR = _autoconf.LOCALSTATEDIR + "/run"
  86 RUN_GANETI_DIR = RUN_DIR + "/ganeti"
  87 BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache"
  88 DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks"
  89 RUN_DIRS_MODE = 0755
  90 SOCKET_DIR = RUN_GANETI_DIR + "/socket"
  91 SOCKET_DIR_MODE = 0700
  92 # keep RUN_GANETI_DIR first here, to make sure all get created when the node
  93 # daemon is started (this takes care of RUN_DIR being tmpfs)
  94 SUB_RUN_DIRS = [ RUN_GANETI_DIR, BDEV_CACHE_DIR, DISK_LINKS_DIR ]
  95 LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock"
  96 SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock"
  97 CLUSTER_CONF_FILE = DATA_DIR + "/config.data"
  98 SSL_CERT_FILE = DATA_DIR + "/server.pem"
  99 RAPI_CERT_FILE = DATA_DIR + "/rapi.pem"
 100 WATCHER_STATEFILE = DATA_DIR + "/watcher.data"
 101 INSTANCE_UPFILE = RUN_GANETI_DIR + "/instance-status"
 102 SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts"
 103 RAPI_USERS_FILE = DATA_DIR + "/rapi_users"
 104 QUEUE_DIR = DATA_DIR + "/queue"
 105 ETC_HOSTS = "/etc/hosts"
 106 DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
 107
 108 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 109
 110 # PID files
 111 MASTERD_PID = "ganeti-masterd"
 112 NODED_PID = "ganeti-noded"
 113 RAPI_PID = "ganeti-rapi"
 114
 115 NODE_INITD_SCRIPT = _autoconf.SYSCONFDIR + "/init.d/ganeti"
 116 DEFAULT_NODED_PORT = 1811
 117 FIRST_DRBD_PORT = 11000
 118 LAST_DRBD_PORT = 14999
 119 MASTER_SCRIPT = "ganeti-master"
 120
 121 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
 122 LOG_OS_DIR = LOG_DIR + "os"
 123 LOG_NODESERVER = LOG_DIR + "node-daemon.log"
 124 LOG_WATCHER = LOG_DIR + "watcher.log"
 125 LOG_MASTERDAEMON = LOG_DIR + "master-daemon.log"
 126 LOG_RAPISERVER = LOG_DIR + "rapi-daemon.log"
 127 LOG_COMMANDS = LOG_DIR + "commands.log"
 128 LOG_BURNIN = LOG_DIR + "burnin.log"
 129
 130 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
 131 EXPORT_DIR = _autoconf.EXPORT_DIR
 132
 133 EXPORT_CONF_FILE = "config.ini"
 134
 135 XEN_KERNEL = _autoconf.XEN_KERNEL
 136 XEN_INITRD = _autoconf.XEN_INITRD
 137
 138 KVM_PATH = _autoconf.KVM_PATH
 139 SOCAT_PATH = _autoconf.SOCAT_PATH
 140 KVM_MIGRATION_PORT = _autoconf.KVM_MIGRATION_PORT
 141
 142 VALUE_DEFAULT = "default"
 143 VALUE_AUTO = "auto"
 144 VALUE_GENERATE = "generate"
 145 VALUE_NONE = "none"
 146 VALUE_TRUE = "true"
 147 VALUE_FALSE = "false"
 148
 149 # External script validation mask
 150 EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")
 151
 152 # hooks-related constants
 153 HOOKS_BASE_DIR = _autoconf.SYSCONFDIR + "/ganeti/hooks"
 154 HOOKS_PHASE_PRE = "pre"
 155 HOOKS_PHASE_POST = "post"
 156 HOOKS_NAME_CFGUPDATE = "config-update"
 157 HOOKS_VERSION = 2
 158
 159 # hooks subject type (what object type does the LU deal with)
 160 HTYPE_CLUSTER = "CLUSTER"
 161 HTYPE_NODE = "NODE"
 162 HTYPE_INSTANCE = "INSTANCE"
 163
 164 HKR_SKIP = 0
 165 HKR_FAIL = 1
 166 HKR_SUCCESS = 2
 167
 168 # disk template types
 169 DT_DISKLESS = "diskless"
 170 DT_PLAIN = "plain"
 171 DT_DRBD8 = "drbd"
 172 DT_FILE = "file"
 173
 174 # the set of network-mirrored disk templates
 175 DTS_NET_MIRROR = frozenset([DT_DRBD8])
 176
 177 # the set of non-lvm-based disk templates
 178 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE])
 179
 180 # logical disk types
 181 LD_LV = "lvm"
 182 LD_DRBD8 = "drbd8"
 183 LD_FILE = "file"
 184 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8])
 185
 186 # drbd constants
 187 DRBD_HMAC_ALG = "md5"
 188 DRBD_NET_PROTOCOL = "C"
 189
 190 # file backend driver
 191 FD_LOOP = "loop"
 192 FD_BLKTAP = "blktap"
 193
 194 # the set of drbd-like disk types
 195 LDS_DRBD = frozenset([LD_DRBD8])
 196
 197 # disk access mode
 198 DISK_RDONLY = "ro"
 199 DISK_RDWR = "rw"
 200 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
 201
 202 # disk replacement mode
 203 REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
 204 REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
 205 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
 206
 207 # lock recalculate mode
 208 LOCKS_REPLACE = 'replace'
 209 LOCKS_APPEND = 'append'
 210
 211 # instance creation modes
 212 INSTANCE_CREATE = "create"
 213 INSTANCE_IMPORT = "import"
 214
 215 DISK_TEMPLATES = frozenset([DT_DISKLESS, DT_PLAIN,
 216                             DT_DRBD8, DT_FILE])
 217
 218 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
 219
 220 # import/export config options
 221 INISECT_EXP = "export"
 222 INISECT_INS = "instance"
 223
 224 # dynamic device modification
 225
 226 DDM_ADD = 'add'
 227 DDM_REMOVE = 'remove'
 228
 229 # common exit codes
 230 EXIT_SUCCESS = 0
 231 EXIT_FAILURE = 1
 232 EXIT_NOTCLUSTER = 5
 233 EXIT_NOTMASTER = 11
 234 EXIT_NODESETUP_ERROR = 12
 235 EXIT_CONFIRMATION = 13 # need user confirmation
 236
 237 # tags
 238 TAG_CLUSTER = "cluster"
 239 TAG_NODE = "node"
 240 TAG_INSTANCE = "instance"
 241 MAX_TAG_LEN = 128
 242 MAX_TAGS_PER_OBJ = 4096
 243
 244 # others
 245 DEFAULT_BRIDGE = "xen-br0"
 246 SYNC_SPEED = 60 * 1024
 247 LOCALHOST_IP_ADDRESS = "127.0.0.1"
 248 TCP_PING_TIMEOUT = 10
 249 GANETI_RUNAS = "root"
 250 DEFAULT_VG = "xenvg"
 251 BIND_ADDRESS_GLOBAL = "0.0.0.0"
 252 MIN_VG_SIZE = 20480
 253 DEFAULT_MAC_PREFIX = "aa:00:00"
 254 LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT
 255
 256 # RPC constants
 257 (RPC_ENCODING_NONE,
 258  RPC_ENCODING_ZLIB_BASE64) = range(2)
 259
 260 # os related constants
 261 OS_VALID_STATUS = "VALID"
 262 OS_SCRIPT_CREATE = 'create'
 263 OS_SCRIPT_IMPORT = 'import'
 264 OS_SCRIPT_EXPORT = 'export'
 265 OS_SCRIPT_RENAME = 'rename'
 266 OS_SCRIPTS = frozenset([OS_SCRIPT_CREATE, OS_SCRIPT_IMPORT,
 267                         OS_SCRIPT_EXPORT, OS_SCRIPT_RENAME])
 268
 269 # ssh constants
 270 SSH_INITD_SCRIPT = _autoconf.SSH_INITD_SCRIPT
 271 SSH_CONFIG_DIR = "/etc/ssh/"
 272 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "ssh_host_dsa_key"
 273 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
 274 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "ssh_host_rsa_key"
 275 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
 276 SSH = "ssh"
 277 SCP = "scp"
 278
 279 # reboot types
 280 INSTANCE_REBOOT_SOFT = "soft"
 281 INSTANCE_REBOOT_HARD = "hard"
 282 INSTANCE_REBOOT_FULL = "full"
 283
 284 REBOOT_TYPES = frozenset([INSTANCE_REBOOT_SOFT,
 285                           INSTANCE_REBOOT_HARD,
 286                           INSTANCE_REBOOT_FULL])
 287
 288 VTYPE_STRING = 'string'
 289 VTYPE_BOOL = 'bool'
 290 VTYPE_SIZE = 'size' # size, in MiBs
 291 VTYPE_INT = 'int'
 292 ENFORCEABLE_TYPES = frozenset([
 293                       VTYPE_STRING,
 294                       VTYPE_BOOL,
 295                       VTYPE_SIZE,
 296                       VTYPE_INT,
 297                       ])
 298
 299 # HV parameter names (global namespace)
 300 HV_BOOT_ORDER = "boot_order"
 301 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
 302 HV_NIC_TYPE = "nic_type"
 303 HV_DISK_TYPE = "disk_type"
 304 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
 305 HV_VNC_TLS = "vnc_tls"
 306 HV_VNC_X509 = "vnc_x509_path"
 307 HV_VNC_X509_VERIFY = "vnc_x509_verify"
 308 HV_ACPI = "acpi"
 309 HV_PAE = "pae"
 310 HV_KERNEL_ARGS = "kernel_args"
 311 HV_KERNEL_PATH = "kernel_path"
 312 HV_INITRD_PATH = "initrd_path"
 313 HV_ROOT_PATH = "root_path"
 314 HV_SERIAL_CONSOLE = "serial_console"
 315 HV_USB_MOUSE = "usb_mouse"
 316 HV_DEVICE_MODEL = "device_model"
 317
 318 HVS_PARAMETER_TYPES = {
 319   HV_BOOT_ORDER: VTYPE_STRING,
 320   HV_CDROM_IMAGE_PATH: VTYPE_STRING,
 321   HV_NIC_TYPE: VTYPE_STRING,
 322   HV_DISK_TYPE: VTYPE_STRING,
 323   HV_VNC_BIND_ADDRESS: VTYPE_STRING,
 324   HV_VNC_TLS: VTYPE_BOOL,
 325   HV_VNC_X509: VTYPE_STRING,
 326   HV_VNC_X509_VERIFY: VTYPE_BOOL,
 327   HV_ACPI: VTYPE_BOOL,
 328   HV_PAE: VTYPE_BOOL,
 329   HV_KERNEL_PATH: VTYPE_STRING,
 330   HV_KERNEL_ARGS: VTYPE_STRING,
 331   HV_INITRD_PATH: VTYPE_STRING,
 332   HV_ROOT_PATH: VTYPE_STRING,
 333   HV_SERIAL_CONSOLE: VTYPE_BOOL,
 334   HV_USB_MOUSE: VTYPE_STRING,
 335   HV_DEVICE_MODEL: VTYPE_STRING,
 336   }
 337
 338 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
 339
 340 # BE parameter names
 341 BE_MEMORY = "memory"
 342 BE_VCPUS = "vcpus"
 343 BE_AUTO_BALANCE = "auto_balance"
 344
 345 BES_PARAMETER_TYPES = {
 346     BE_MEMORY: VTYPE_SIZE,
 347     BE_VCPUS: VTYPE_INT,
 348     BE_AUTO_BALANCE: VTYPE_BOOL,
 349     }
 350
 351 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 352
 353 # BE GROUP
 354 BEGR_DEFAULT = "default"
 355
 356 # Hypervisor constants
 357 HT_XEN_PVM = "xen-pvm"
 358 HT_FAKE = "fake"
 359 HT_XEN_HVM = "xen-hvm"
 360 HT_KVM = "kvm"
 361 HYPER_TYPES = frozenset([HT_XEN_PVM, HT_FAKE, HT_XEN_HVM, HT_KVM])
 362 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
 363 HTS_COPY_VNC_PASSWORD = frozenset([HT_XEN_HVM])
 364
 365 VNC_BASE_PORT = 5900
 366 VNC_PASSWORD_FILE = _autoconf.SYSCONFDIR + "/ganeti/vnc-cluster-password"
 367 VNC_DEFAULT_BIND_ADDRESS = '0.0.0.0'
 368
 369 # NIC types
 370 HT_NIC_RTL8139 = "rtl8139"
 371 HT_NIC_NE2K_PCI = "ne2k_pci"
 372 HT_NIC_NE2K_ISA = "ne2k_isa"
 373 HT_NIC_I82551 = "i82551"
 374 HT_NIC_I85557B = "i82557b"
 375 HT_NIC_I8259ER = "i82559er"
 376 HT_NIC_PCNET = "pcnet"
 377 HT_NIC_E1000 = "e1000"
 378 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
 379
 380 HT_HVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 381                                     HT_NIC_NE2K_ISA, HT_NIC_PARAVIRTUAL])
 382 HT_KVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 383                                     HT_NIC_NE2K_ISA, HT_NIC_I82551,
 384                                     HT_NIC_I85557B, HT_NIC_I8259ER,
 385                                     HT_NIC_PCNET, HT_NIC_E1000,
 386                                     HT_NIC_PARAVIRTUAL])
 387 # Disk types
 388 HT_DISK_IOEMU = "ioemu"
 389 HT_DISK_IDE = "ide"
 390 HT_DISK_SCSI = "scsi"
 391 HT_DISK_SD = "sd"
 392 HT_DISK_MTD = "mtd"
 393 HT_DISK_PFLASH = "pflash"
 394
 395 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
 396 HT_KVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IDE,
 397                                      HT_DISK_SCSI, HT_DISK_SD, HT_DISK_MTD,
 398                                      HT_DISK_PFLASH])
 399
 400 # Mouse types:
 401 HT_MOUSE_MOUSE = "mouse"
 402 HT_MOUSE_TABLET = "tablet"
 403
 404 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
 405
 406 # Boot order
 407 HT_BO_CDROM = "cdrom"
 408 HT_BO_DISK = "disk"
 409 HT_BO_NETWORK = "network"
 410
 411 HT_KVM_VALID_BO_TYPES = frozenset([HT_BO_CDROM, HT_BO_DISK, HT_BO_NETWORK])
 412
 413 # Cluster Verify steps
 414 VERIFY_NPLUSONE_MEM = 'nplusone_mem'
 415 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
 416
 417 # Node verify constants
 418 NV_FILELIST = "filelist"
 419 NV_HVINFO = "hvinfo"
 420 NV_HYPERVISOR = "hypervisor"
 421 NV_INSTANCELIST = "instancelist"
 422 NV_LVLIST = "lvlist"
 423 NV_NODELIST = "nodelist"
 424 NV_NODENETTEST = "node-net-test"
 425 NV_VERSION = "version"
 426 NV_VGLIST = "vglist"
 427 NV_DRBDLIST = "drbd-list"
 428
 429 # Allocator framework constants
 430 IALLOCATOR_VERSION = 2
 431 IALLOCATOR_DIR_IN = "in"
 432 IALLOCATOR_DIR_OUT = "out"
 433 IALLOCATOR_MODE_ALLOC = "allocate"
 434 IALLOCATOR_MODE_RELOC = "relocate"
 435 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
 436 IARUN_NOTFOUND = 1
 437 IARUN_FAILURE = 2
 438 IARUN_SUCCESS = 3
 439
 440 # Job queue
 441 JOB_QUEUE_VERSION = 1
 442 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
 443 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
 444 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
 445 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
 446 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
 447 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
 448 JOB_QUEUE_SIZE_SOFT_LIMIT = JOB_QUEUE_SIZE_HARD_LIMIT * 0.8
 449
 450 JOB_ID_TEMPLATE = r"\d+"
 451
 452 # unchanged job return
 453 JOB_NOTCHANGED = "nochange"
 454
 455 # Job status
 456 JOB_STATUS_QUEUED = "queued"
 457 JOB_STATUS_WAITLOCK = "waiting"
 458 JOB_STATUS_CANCELING = "canceling"
 459 JOB_STATUS_RUNNING = "running"
 460 JOB_STATUS_CANCELED = "canceled"
 461 JOB_STATUS_SUCCESS = "success"
 462 JOB_STATUS_ERROR = "error"
 463
 464 # OpCode status
 465 # not yet finalized
 466 OP_STATUS_QUEUED = "queued"
 467 OP_STATUS_WAITLOCK = "waiting"
 468 OP_STATUS_CANCELING = "canceling"
 469 OP_STATUS_RUNNING = "running"
 470 # finalized
 471 OP_STATUS_CANCELED = "canceled"
 472 OP_STATUS_SUCCESS = "success"
 473 OP_STATUS_ERROR = "error"
 474 OPS_FINALIZED = frozenset([OP_STATUS_CANCELED,
 475                            OP_STATUS_SUCCESS,
 476                            OP_STATUS_ERROR])
 477
 478 # Execution log types
 479 ELOG_MESSAGE = "message"
 480 ELOG_PROGRESS = "progress"
 481
 482 RAPI_PORT = 5080
 483
 484 # max dynamic devices
 485 MAX_NICS = 8
 486 MAX_DISKS = 16
 487
 488 # SSCONF keys
 489 SS_CLUSTER_NAME = "cluster_name"
 490 SS_CLUSTER_TAGS = "cluster_tags"
 491 SS_FILE_STORAGE_DIR = "file_storage_dir"
 492 SS_MASTER_CANDIDATES = "master_candidates"
 493 SS_MASTER_IP = "master_ip"
 494 SS_MASTER_NETDEV = "master_netdev"
 495 SS_MASTER_NODE = "master_node"
 496 SS_NODE_LIST = "node_list"
 497 SS_OFFLINE_NODES = "offline_nodes"
 498 SS_ONLINE_NODES = "online_nodes"
 499 SS_INSTANCE_LIST = "instance_list"
 500 SS_RELEASE_VERSION = "release_version"
 501
 502 # cluster wide default parameters
 503 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
 504
 505 HVC_DEFAULTS = {
 506   HT_XEN_PVM: {
 507     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU",
 508     HV_INITRD_PATH: '',
 509     HV_ROOT_PATH: '/dev/sda1',
 510     HV_KERNEL_ARGS: 'ro',
 511     },
 512   HT_XEN_HVM: {
 513     HV_BOOT_ORDER: "cd",
 514     HV_CDROM_IMAGE_PATH: '',
 515     HV_NIC_TYPE: HT_NIC_RTL8139,
 516     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
 517     HV_VNC_BIND_ADDRESS: '0.0.0.0',
 518     HV_ACPI: True,
 519     HV_PAE: True,
 520     HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
 521     HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
 522     },
 523   HT_KVM: {
 524     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU",
 525     HV_INITRD_PATH: '',
 526     HV_KERNEL_ARGS: 'ro',
 527     HV_ROOT_PATH: '/dev/vda1',
 528     HV_ACPI: True,
 529     HV_SERIAL_CONSOLE: True,
 530     HV_VNC_BIND_ADDRESS: '',
 531     HV_VNC_TLS: False,
 532     HV_VNC_X509: '',
 533     HV_VNC_X509_VERIFY: False,
 534     HV_CDROM_IMAGE_PATH: '',
 535     HV_BOOT_ORDER: HT_BO_DISK,
 536     HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
 537     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
 538     HV_USB_MOUSE: '',
 539     },
 540   HT_FAKE: {
 541     },
 542   }
 543
 544 BEC_DEFAULTS = {
 545   BE_MEMORY: 128,
 546   BE_VCPUS: 1,
 547   BE_AUTO_BALANCE: True,
 548   }
 549
 550 MASTER_POOL_SIZE_DEFAULT = 10