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 = 30
  30 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
  31 OS_API_V10 = 10
  32 OS_API_V15 = 15
  33 OS_API_VERSIONS = frozenset([OS_API_V10, OS_API_V15])
  34 EXPORT_VERSION = 0
  35 RAPI_VERSION = 2
  36
  37
  38 # Format for CONFIG_VERSION:
  39 #   01 03 0123 = 01030123
  40 #   ^^ ^^ ^^^^
  41 #   |  |  + Configuration version/revision
  42 #   |  + Minor version
  43 #   + Major version
  44 #
  45 # It stored as an integer. Make sure not to write an octal number.
  46
  47 # BuildVersion and SplitVersion must be in here because we can't import other
  48 # modules. The cfgupgrade tool must be able to read and write version numbers
  49 # and thus requires these functions. To avoid code duplication, they're kept in
  50 # here.
  51
  52 def BuildVersion(major, minor, revision):
  53   """Calculates int version number from major, minor and revision numbers.
  54
  55   Returns: int representing version number
  56
  57   """
  58   assert isinstance(major, int)
  59   assert isinstance(minor, int)
  60   assert isinstance(revision, int)
  61   return (1000000 * major +
  62             10000 * minor +
  63                 1 * revision)
  64
  65
  66 def SplitVersion(version):
  67   """Splits version number stored in an int.
  68
  69   Returns: tuple; (major, minor, revision)
  70
  71   """
  72   assert isinstance(version, int)
  73
  74   (major, remainder) = divmod(version, 1000000)
  75   (minor, revision) = divmod(remainder, 10000)
  76
  77   return (major, minor, revision)
  78
  79
  80 CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
  81 CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
  82 CONFIG_REVISION = 0
  83 CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
  84
  85 # file paths
  86 DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti"
  87 RUN_DIR = _autoconf.LOCALSTATEDIR + "/run"
  88 RUN_GANETI_DIR = RUN_DIR + "/ganeti"
  89 BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache"
  90 DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks"
  91 RUN_DIRS_MODE = 0755
  92 SOCKET_DIR = RUN_GANETI_DIR + "/socket"
  93 SOCKET_DIR_MODE = 0700
  94 # keep RUN_GANETI_DIR first here, to make sure all get created when the node
  95 # daemon is started (this takes care of RUN_DIR being tmpfs)
  96 SUB_RUN_DIRS = [ RUN_GANETI_DIR, BDEV_CACHE_DIR, DISK_LINKS_DIR ]
  97 LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock"
  98 SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock"
  99 CLUSTER_CONF_FILE = DATA_DIR + "/config.data"
 100 SSL_CERT_FILE = DATA_DIR + "/server.pem"
 101 RAPI_CERT_FILE = DATA_DIR + "/rapi.pem"
 102 HMAC_CLUSTER_KEY = DATA_DIR + "/hmac.key"
 103 WATCHER_STATEFILE = DATA_DIR + "/watcher.data"
 104 WATCHER_PAUSEFILE = DATA_DIR + "/watcher.pause"
 105 INSTANCE_UPFILE = RUN_GANETI_DIR + "/instance-status"
 106 SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts"
 107 RAPI_USERS_FILE = DATA_DIR + "/rapi_users"
 108 QUEUE_DIR = DATA_DIR + "/queue"
 109 DAEMON_UTIL = _autoconf.PKGLIBDIR + "/daemon-util"
 110 ETC_HOSTS = "/etc/hosts"
 111 DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
 112 SYSCONFDIR = _autoconf.SYSCONFDIR
 113 TOOLSDIR = _autoconf.TOOLSDIR
 114 CONF_DIR = SYSCONFDIR + "/ganeti"
 115
 116 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 117
 118 NODED = "ganeti-noded"
 119 CONFD = "ganeti-confd"
 120 RAPI = "ganeti-rapi"
 121 MASTERD = "ganeti-masterd"
 122 # used in the ganeti-nbma project
 123 NLD = "ganeti-nld"
 124
 125 MULTITHREADED_DAEMONS = frozenset([MASTERD])
 126
 127 DAEMONS_SSL = {
 128   # daemon-name: (default-cert-path, default-key-path)
 129   NODED: (SSL_CERT_FILE, SSL_CERT_FILE),
 130   RAPI: (RAPI_CERT_FILE, RAPI_CERT_FILE),
 131 }
 132
 133 DAEMONS_PORTS = {
 134   # daemon-name: ("proto", "default-port")
 135   NODED: ("tcp", 1811),
 136   CONFD: ("udp", 1814),
 137   RAPI: ("tcp", 5080),
 138   # used in the ganeti-nbma project
 139   NLD: ("udp", 1816),
 140 }
 141 DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
 142 DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
 143 DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
 144 # used in the ganeti-nbma project
 145 DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
 146
 147 FIRST_DRBD_PORT = 11000
 148 LAST_DRBD_PORT = 14999
 149 MASTER_SCRIPT = "ganeti-master"
 150
 151 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
 152 DAEMONS_LOGFILES = {
 153   # "daemon-name": "logfile"
 154   NODED: LOG_DIR + "node-daemon.log",
 155   CONFD: LOG_DIR + "conf-daemon.log",
 156   RAPI: LOG_DIR + "rapi-daemon.log",
 157   MASTERD: LOG_DIR + "master-daemon.log",
 158   # used in the ganeti-nbma project
 159   NLD: LOG_DIR + "nl-daemon.log",
 160   }
 161 LOG_OS_DIR = LOG_DIR + "os"
 162 LOG_WATCHER = LOG_DIR + "watcher.log"
 163 LOG_COMMANDS = LOG_DIR + "commands.log"
 164 LOG_BURNIN = LOG_DIR + "burnin.log"
 165
 166 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
 167 EXPORT_DIR = _autoconf.EXPORT_DIR
 168
 169 EXPORT_CONF_FILE = "config.ini"
 170
 171 XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
 172 XEN_KERNEL = _autoconf.XEN_KERNEL
 173 XEN_INITRD = _autoconf.XEN_INITRD
 174
 175 KVM_PATH = _autoconf.KVM_PATH
 176 SOCAT_PATH = _autoconf.SOCAT_PATH
 177 SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
 178 SOCAT_ESCAPE_CODE = "0x1d"
 179
 180 VALUE_DEFAULT = "default"
 181 VALUE_AUTO = "auto"
 182 VALUE_GENERATE = "generate"
 183 VALUE_NONE = "none"
 184 VALUE_TRUE = "true"
 185 VALUE_FALSE = "false"
 186
 187 # External script validation mask
 188 EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")
 189
 190 # hooks-related constants
 191 HOOKS_BASE_DIR = CONF_DIR + "/hooks"
 192 HOOKS_PHASE_PRE = "pre"
 193 HOOKS_PHASE_POST = "post"
 194 HOOKS_NAME_CFGUPDATE = "config-update"
 195 HOOKS_VERSION = 2
 196
 197 # hooks subject type (what object type does the LU deal with)
 198 HTYPE_CLUSTER = "CLUSTER"
 199 HTYPE_NODE = "NODE"
 200 HTYPE_INSTANCE = "INSTANCE"
 201
 202 HKR_SKIP = 0
 203 HKR_FAIL = 1
 204 HKR_SUCCESS = 2
 205
 206 # Storage types
 207 ST_FILE = "file"
 208 ST_LVM_PV = "lvm-pv"
 209 ST_LVM_VG = "lvm-vg"
 210
 211 # Storage fields
 212 # first two are valid in LU context only, not passed to backend
 213 SF_NODE = "node"
 214 SF_TYPE = "type"
 215 # and the rest are valid in backend
 216 SF_NAME = "name"
 217 SF_SIZE = "size"
 218 SF_FREE = "free"
 219 SF_USED = "used"
 220 SF_ALLOCATABLE = "allocatable"
 221
 222 # Storage operations
 223 SO_FIX_CONSISTENCY = "fix-consistency"
 224
 225 # Available fields per storage type
 226 VALID_STORAGE_FIELDS = frozenset([SF_NAME, SF_TYPE, SF_SIZE,
 227                                   SF_USED, SF_FREE, SF_ALLOCATABLE])
 228
 229 VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
 230
 231 MODIFIABLE_STORAGE_FIELDS = {
 232   ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
 233   }
 234
 235 VALID_STORAGE_OPERATIONS = {
 236   ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
 237   }
 238
 239 # Local disk status
 240 # Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
 241 (LDS_OKAY,
 242  LDS_UNKNOWN,
 243  LDS_FAULTY) = range(1, 4)
 244
 245 # disk template types
 246 DT_DISKLESS = "diskless"
 247 DT_PLAIN = "plain"
 248 DT_DRBD8 = "drbd"
 249 DT_FILE = "file"
 250
 251 # the set of network-mirrored disk templates
 252 DTS_NET_MIRROR = frozenset([DT_DRBD8])
 253
 254 # the set of non-lvm-based disk templates
 255 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE])
 256
 257 # logical disk types
 258 LD_LV = "lvm"
 259 LD_DRBD8 = "drbd8"
 260 LD_FILE = "file"
 261 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8])
 262
 263 # drbd constants
 264 DRBD_HMAC_ALG = "md5"
 265 DRBD_NET_PROTOCOL = "C"
 266
 267 # file backend driver
 268 FD_LOOP = "loop"
 269 FD_BLKTAP = "blktap"
 270
 271 # the set of drbd-like disk types
 272 LDS_DRBD = frozenset([LD_DRBD8])
 273
 274 # disk access mode
 275 DISK_RDONLY = "ro"
 276 DISK_RDWR = "rw"
 277 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
 278
 279 # disk replacement mode
 280 REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
 281 REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
 282 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
 283 REPLACE_DISK_AUTO = "replace_auto"
 284
 285 # lock recalculate mode
 286 LOCKS_REPLACE = 'replace'
 287 LOCKS_APPEND = 'append'
 288
 289 # instance creation modes
 290 INSTANCE_CREATE = "create"
 291 INSTANCE_IMPORT = "import"
 292
 293 DISK_TEMPLATES = frozenset([DT_DISKLESS, DT_PLAIN,
 294                             DT_DRBD8, DT_FILE])
 295
 296 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
 297
 298 # import/export config options
 299 INISECT_EXP = "export"
 300 INISECT_INS = "instance"
 301
 302 # dynamic device modification
 303
 304 DDM_ADD = 'add'
 305 DDM_REMOVE = 'remove'
 306
 307 # common exit codes
 308 EXIT_SUCCESS = 0
 309 EXIT_FAILURE = 1
 310 EXIT_NOTCLUSTER = 5
 311 EXIT_NOTMASTER = 11
 312 EXIT_NODESETUP_ERROR = 12
 313 EXIT_CONFIRMATION = 13 # need user confirmation
 314 EXIT_NOTCANDIDATE = 14
 315
 316 # tags
 317 TAG_CLUSTER = "cluster"
 318 TAG_NODE = "node"
 319 TAG_INSTANCE = "instance"
 320 MAX_TAG_LEN = 128
 321 MAX_TAGS_PER_OBJ = 4096
 322
 323 # others
 324 DEFAULT_BRIDGE = "xen-br0"
 325 SYNC_SPEED = 60 * 1024
 326 LOCALHOST_IP_ADDRESS = "127.0.0.1"
 327 TCP_PING_TIMEOUT = 10
 328 GANETI_RUNAS = "root"
 329 DEFAULT_VG = "xenvg"
 330 BIND_ADDRESS_GLOBAL = "0.0.0.0"
 331 MIN_VG_SIZE = 20480
 332 DEFAULT_MAC_PREFIX = "aa:00:00"
 333 LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT
 334 # default maximum instance wait time, in seconds.
 335 DEFAULT_SHUTDOWN_TIMEOUT = 120
 336 NODE_MAX_CLOCK_SKEW = 150
 337
 338 # RPC constants
 339 (RPC_ENCODING_NONE,
 340  RPC_ENCODING_ZLIB_BASE64) = range(2)
 341
 342 # os related constants
 343 OS_SCRIPT_CREATE = 'create'
 344 OS_SCRIPT_IMPORT = 'import'
 345 OS_SCRIPT_EXPORT = 'export'
 346 OS_SCRIPT_RENAME = 'rename'
 347 OS_SCRIPTS = frozenset([OS_SCRIPT_CREATE, OS_SCRIPT_IMPORT,
 348                         OS_SCRIPT_EXPORT, OS_SCRIPT_RENAME])
 349
 350 OS_API_FILE = 'ganeti_api_version'
 351 OS_VARIANTS_FILE = 'variants.list'
 352
 353 # ssh constants
 354 SSH_CONFIG_DIR = "/etc/ssh/"
 355 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "ssh_host_dsa_key"
 356 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
 357 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "ssh_host_rsa_key"
 358 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
 359 SSH = "ssh"
 360 SCP = "scp"
 361
 362 # reboot types
 363 INSTANCE_REBOOT_SOFT = "soft"
 364 INSTANCE_REBOOT_HARD = "hard"
 365 INSTANCE_REBOOT_FULL = "full"
 366
 367 REBOOT_TYPES = frozenset([INSTANCE_REBOOT_SOFT,
 368                           INSTANCE_REBOOT_HARD,
 369                           INSTANCE_REBOOT_FULL])
 370
 371 VTYPE_STRING = 'string'
 372 VTYPE_BOOL = 'bool'
 373 VTYPE_SIZE = 'size' # size, in MiBs
 374 VTYPE_INT = 'int'
 375 ENFORCEABLE_TYPES = frozenset([
 376                       VTYPE_STRING,
 377                       VTYPE_BOOL,
 378                       VTYPE_SIZE,
 379                       VTYPE_INT,
 380                       ])
 381
 382 # HV parameter names (global namespace)
 383 HV_BOOT_ORDER = "boot_order"
 384 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
 385 HV_NIC_TYPE = "nic_type"
 386 HV_DISK_TYPE = "disk_type"
 387 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
 388 HV_VNC_PASSWORD_FILE = "vnc_password_file"
 389 HV_VNC_TLS = "vnc_tls"
 390 HV_VNC_X509 = "vnc_x509_path"
 391 HV_VNC_X509_VERIFY = "vnc_x509_verify"
 392 HV_ACPI = "acpi"
 393 HV_PAE = "pae"
 394 HV_USE_BOOTLOADER = "use_bootloader"
 395 HV_BOOTLOADER_ARGS = "bootloader_args"
 396 HV_BOOTLOADER_PATH = "bootloader_path"
 397 HV_KERNEL_ARGS = "kernel_args"
 398 HV_KERNEL_PATH = "kernel_path"
 399 HV_INITRD_PATH = "initrd_path"
 400 HV_ROOT_PATH = "root_path"
 401 HV_SERIAL_CONSOLE = "serial_console"
 402 HV_USB_MOUSE = "usb_mouse"
 403 HV_DEVICE_MODEL = "device_model"
 404 HV_INIT_SCRIPT = "init_script"
 405 HV_MIGRATION_PORT = "migration_port"
 406 HV_USE_LOCALTIME = "use_localtime"
 407 HV_DISK_CACHE = "disk_cache"
 408
 409 HVS_PARAMETER_TYPES = {
 410   HV_BOOT_ORDER: VTYPE_STRING,
 411   HV_CDROM_IMAGE_PATH: VTYPE_STRING,
 412   HV_NIC_TYPE: VTYPE_STRING,
 413   HV_DISK_TYPE: VTYPE_STRING,
 414   HV_VNC_PASSWORD_FILE: VTYPE_STRING,
 415   HV_VNC_BIND_ADDRESS: VTYPE_STRING,
 416   HV_VNC_TLS: VTYPE_BOOL,
 417   HV_VNC_X509: VTYPE_STRING,
 418   HV_VNC_X509_VERIFY: VTYPE_BOOL,
 419   HV_ACPI: VTYPE_BOOL,
 420   HV_PAE: VTYPE_BOOL,
 421   HV_USE_BOOTLOADER: VTYPE_BOOL,
 422   HV_BOOTLOADER_PATH: VTYPE_STRING,
 423   HV_BOOTLOADER_ARGS: VTYPE_STRING,
 424   HV_KERNEL_PATH: VTYPE_STRING,
 425   HV_KERNEL_ARGS: VTYPE_STRING,
 426   HV_INITRD_PATH: VTYPE_STRING,
 427   HV_ROOT_PATH: VTYPE_STRING,
 428   HV_SERIAL_CONSOLE: VTYPE_BOOL,
 429   HV_USB_MOUSE: VTYPE_STRING,
 430   HV_DEVICE_MODEL: VTYPE_STRING,
 431   HV_INIT_SCRIPT: VTYPE_STRING,
 432   HV_MIGRATION_PORT: VTYPE_INT,
 433   HV_USE_LOCALTIME: VTYPE_BOOL,
 434   HV_DISK_CACHE: VTYPE_STRING,
 435   }
 436
 437 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
 438
 439 # BE parameter names
 440 BE_MEMORY = "memory"
 441 BE_VCPUS = "vcpus"
 442 BE_AUTO_BALANCE = "auto_balance"
 443
 444 BES_PARAMETER_TYPES = {
 445     BE_MEMORY: VTYPE_SIZE,
 446     BE_VCPUS: VTYPE_INT,
 447     BE_AUTO_BALANCE: VTYPE_BOOL,
 448     }
 449
 450 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 451
 452 # Instance Parameters Profile
 453 PP_DEFAULT = "default"
 454
 455 NIC_MODE = "mode"
 456 NIC_LINK = "link"
 457
 458 NIC_MODE_BRIDGED = "bridged"
 459 NIC_MODE_ROUTED = "routed"
 460
 461 NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])
 462
 463 NICS_PARAMETER_TYPES = {
 464     NIC_MODE: VTYPE_STRING,
 465     NIC_LINK: VTYPE_STRING,
 466     }
 467
 468 NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
 469
 470 # Hypervisor constants
 471 HT_XEN_PVM = "xen-pvm"
 472 HT_FAKE = "fake"
 473 HT_XEN_HVM = "xen-hvm"
 474 HT_KVM = "kvm"
 475 HT_CHROOT = "chroot"
 476 HYPER_TYPES = frozenset([HT_XEN_PVM, HT_FAKE, HT_XEN_HVM, HT_KVM, HT_CHROOT])
 477 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
 478
 479 VNC_BASE_PORT = 5900
 480 VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
 481 VNC_DEFAULT_BIND_ADDRESS = '0.0.0.0'
 482
 483 # NIC types
 484 HT_NIC_RTL8139 = "rtl8139"
 485 HT_NIC_NE2K_PCI = "ne2k_pci"
 486 HT_NIC_NE2K_ISA = "ne2k_isa"
 487 HT_NIC_I82551 = "i82551"
 488 HT_NIC_I85557B = "i82557b"
 489 HT_NIC_I8259ER = "i82559er"
 490 HT_NIC_PCNET = "pcnet"
 491 HT_NIC_E1000 = "e1000"
 492 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
 493
 494 HT_HVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 495                                     HT_NIC_NE2K_ISA, HT_NIC_PARAVIRTUAL])
 496 HT_KVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 497                                     HT_NIC_NE2K_ISA, HT_NIC_I82551,
 498                                     HT_NIC_I85557B, HT_NIC_I8259ER,
 499                                     HT_NIC_PCNET, HT_NIC_E1000,
 500                                     HT_NIC_PARAVIRTUAL])
 501 # Disk types
 502 HT_DISK_IOEMU = "ioemu"
 503 HT_DISK_IDE = "ide"
 504 HT_DISK_SCSI = "scsi"
 505 HT_DISK_SD = "sd"
 506 HT_DISK_MTD = "mtd"
 507 HT_DISK_PFLASH = "pflash"
 508
 509 HT_CACHE_DEFAULT = "default"
 510 HT_CACHE_NONE = "none"
 511 HT_CACHE_WTHROUGH = "writethrough"
 512 HT_CACHE_WBACK = "writeback"
 513 HT_VALID_CACHE_TYPES = frozenset([HT_CACHE_DEFAULT,
 514                                   HT_CACHE_NONE,
 515                                   HT_CACHE_WTHROUGH,
 516                                   HT_CACHE_WBACK])
 517
 518 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
 519 HT_KVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IDE,
 520                                      HT_DISK_SCSI, HT_DISK_SD, HT_DISK_MTD,
 521                                      HT_DISK_PFLASH])
 522
 523 # Mouse types:
 524 HT_MOUSE_MOUSE = "mouse"
 525 HT_MOUSE_TABLET = "tablet"
 526
 527 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
 528
 529 # Boot order
 530 HT_BO_CDROM = "cdrom"
 531 HT_BO_DISK = "disk"
 532 HT_BO_NETWORK = "network"
 533
 534 HT_KVM_VALID_BO_TYPES = frozenset([HT_BO_CDROM, HT_BO_DISK, HT_BO_NETWORK])
 535
 536 # Cluster Verify steps
 537 VERIFY_NPLUSONE_MEM = 'nplusone_mem'
 538 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
 539
 540 # Node verify constants
 541 NV_FILELIST = "filelist"
 542 NV_HVINFO = "hvinfo"
 543 NV_HYPERVISOR = "hypervisor"
 544 NV_INSTANCELIST = "instancelist"
 545 NV_NODELIST = "nodelist"
 546 NV_NODENETTEST = "node-net-test"
 547 NV_VERSION = "version"
 548 NV_VGLIST = "vglist"
 549 NV_LVLIST = "lvlist"
 550 NV_PVLIST = "pvlist"
 551 NV_DRBDLIST = "drbd-list"
 552 NV_NODESETUP = "nodesetup"
 553 NV_TIME = "time"
 554
 555 # Allocator framework constants
 556 IALLOCATOR_VERSION = 2
 557 IALLOCATOR_DIR_IN = "in"
 558 IALLOCATOR_DIR_OUT = "out"
 559 IALLOCATOR_MODE_ALLOC = "allocate"
 560 IALLOCATOR_MODE_RELOC = "relocate"
 561 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
 562
 563 # Job queue
 564 JOB_QUEUE_VERSION = 1
 565 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
 566 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
 567 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
 568 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
 569 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
 570 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
 571 JOB_QUEUE_SIZE_SOFT_LIMIT = JOB_QUEUE_SIZE_HARD_LIMIT * 0.8
 572
 573 JOB_ID_TEMPLATE = r"\d+"
 574
 575 # unchanged job return
 576 JOB_NOTCHANGED = "nochange"
 577
 578 # Job status
 579 JOB_STATUS_QUEUED = "queued"
 580 JOB_STATUS_WAITLOCK = "waiting"
 581 JOB_STATUS_CANCELING = "canceling"
 582 JOB_STATUS_RUNNING = "running"
 583 JOB_STATUS_CANCELED = "canceled"
 584 JOB_STATUS_SUCCESS = "success"
 585 JOB_STATUS_ERROR = "error"
 586
 587 # OpCode status
 588 # not yet finalized
 589 OP_STATUS_QUEUED = "queued"
 590 OP_STATUS_WAITLOCK = "waiting"
 591 OP_STATUS_CANCELING = "canceling"
 592 OP_STATUS_RUNNING = "running"
 593 # finalized
 594 OP_STATUS_CANCELED = "canceled"
 595 OP_STATUS_SUCCESS = "success"
 596 OP_STATUS_ERROR = "error"
 597 OPS_FINALIZED = frozenset([OP_STATUS_CANCELED,
 598                            OP_STATUS_SUCCESS,
 599                            OP_STATUS_ERROR])
 600
 601 # Execution log types
 602 ELOG_MESSAGE = "message"
 603 ELOG_PROGRESS = "progress"
 604
 605 # max dynamic devices
 606 MAX_NICS = 8
 607 MAX_DISKS = 16
 608
 609 # SSCONF keys
 610 SS_CLUSTER_NAME = "cluster_name"
 611 SS_CLUSTER_TAGS = "cluster_tags"
 612 SS_FILE_STORAGE_DIR = "file_storage_dir"
 613 SS_MASTER_CANDIDATES = "master_candidates"
 614 SS_MASTER_CANDIDATES_IPS = "master_candidates_ips"
 615 SS_MASTER_IP = "master_ip"
 616 SS_MASTER_NETDEV = "master_netdev"
 617 SS_MASTER_NODE = "master_node"
 618 SS_NODE_LIST = "node_list"
 619 SS_NODE_PRIMARY_IPS = "node_primary_ips"
 620 SS_NODE_SECONDARY_IPS = "node_secondary_ips"
 621 SS_OFFLINE_NODES = "offline_nodes"
 622 SS_ONLINE_NODES = "online_nodes"
 623 SS_INSTANCE_LIST = "instance_list"
 624 SS_RELEASE_VERSION = "release_version"
 625
 626 # cluster wide default parameters
 627 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
 628
 629 HVC_DEFAULTS = {
 630   HT_XEN_PVM: {
 631     HV_USE_BOOTLOADER: False,
 632     HV_BOOTLOADER_PATH: XEN_BOOTLOADER,
 633     HV_BOOTLOADER_ARGS: '',
 634     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU",
 635     HV_INITRD_PATH: '',
 636     HV_ROOT_PATH: '/dev/sda1',
 637     HV_KERNEL_ARGS: 'ro',
 638     HV_MIGRATION_PORT: 8002,
 639     },
 640   HT_XEN_HVM: {
 641     HV_BOOT_ORDER: "cd",
 642     HV_CDROM_IMAGE_PATH: '',
 643     HV_NIC_TYPE: HT_NIC_RTL8139,
 644     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
 645     HV_VNC_BIND_ADDRESS: '0.0.0.0',
 646     HV_VNC_PASSWORD_FILE: VNC_PASSWORD_FILE,
 647     HV_ACPI: True,
 648     HV_PAE: True,
 649     HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
 650     HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
 651     HV_MIGRATION_PORT: 8002,
 652     HV_USE_LOCALTIME: False,
 653     },
 654   HT_KVM: {
 655     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU",
 656     HV_INITRD_PATH: '',
 657     HV_KERNEL_ARGS: 'ro',
 658     HV_ROOT_PATH: '/dev/vda1',
 659     HV_ACPI: True,
 660     HV_SERIAL_CONSOLE: True,
 661     HV_VNC_BIND_ADDRESS: '',
 662     HV_VNC_TLS: False,
 663     HV_VNC_X509: '',
 664     HV_VNC_X509_VERIFY: False,
 665     HV_VNC_PASSWORD_FILE: '',
 666     HV_CDROM_IMAGE_PATH: '',
 667     HV_BOOT_ORDER: HT_BO_DISK,
 668     HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
 669     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
 670     HV_USB_MOUSE: '',
 671     HV_MIGRATION_PORT: 8102,
 672     HV_USE_LOCALTIME: False,
 673     HV_DISK_CACHE: HT_CACHE_DEFAULT,
 674     },
 675   HT_FAKE: {
 676     },
 677   HT_CHROOT: {
 678     HV_INIT_SCRIPT: "/ganeti-chroot",
 679     },
 680   }
 681
 682 HVC_GLOBALS = frozenset([
 683   HV_MIGRATION_PORT,
 684   ])
 685
 686 BEC_DEFAULTS = {
 687   BE_MEMORY: 128,
 688   BE_VCPUS: 1,
 689   BE_AUTO_BALANCE: True,
 690   }
 691
 692 NICC_DEFAULTS = {
 693   NIC_MODE: NIC_MODE_BRIDGED,
 694   NIC_LINK: DEFAULT_BRIDGE,
 695   }
 696
 697 MASTER_POOL_SIZE_DEFAULT = 10
 698
 699 CONFD_PROTOCOL_VERSION = 1
 700
 701 CONFD_REQ_PING = 0
 702 CONFD_REQ_NODE_ROLE_BYNAME = 1
 703 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP = 2
 704 CONFD_REQ_CLUSTER_MASTER = 3
 705 CONFD_REQ_NODE_PIP_LIST = 4
 706 CONFD_REQ_MC_PIP_LIST = 5
 707 CONFD_REQ_INSTANCES_IPS_LIST = 6
 708
 709 # Confd request query fields. These are used to narrow down queries.
 710 # These must be strings rather than integers, because json-encoding
 711 # converts them to strings anyway, as they're used as dict-keys.
 712 CONFD_REQQ_LINK = "0"
 713 CONFD_REQQ_IP = "1"
 714 CONFD_REQQ_IPLIST = "2"
 715 CONFD_REQQ_FIELDS = "3"
 716
 717 CONFD_REQFIELD_NAME = "0"
 718 CONFD_REQFIELD_IP = "1"
 719 CONFD_REQFIELD_MNODE_PIP = "2"
 720
 721 CONFD_REQS = frozenset([
 722   CONFD_REQ_PING,
 723   CONFD_REQ_NODE_ROLE_BYNAME,
 724   CONFD_REQ_NODE_PIP_BY_INSTANCE_IP,
 725   CONFD_REQ_CLUSTER_MASTER,
 726   CONFD_REQ_NODE_PIP_LIST,
 727   CONFD_REQ_MC_PIP_LIST,
 728   CONFD_REQ_INSTANCES_IPS_LIST,
 729   ])
 730
 731 CONFD_REPL_STATUS_OK = 0
 732 CONFD_REPL_STATUS_ERROR = 1
 733 CONFD_REPL_STATUS_NOTIMPLEMENTED = 2
 734
 735 CONFD_REPL_STATUSES = frozenset([
 736   CONFD_REPL_STATUS_OK,
 737   CONFD_REPL_STATUS_ERROR,
 738   CONFD_REPL_STATUS_NOTIMPLEMENTED,
 739   ])
 740
 741 (CONFD_NODE_ROLE_MASTER,
 742  CONFD_NODE_ROLE_CANDIDATE,
 743  CONFD_NODE_ROLE_OFFLINE,
 744  CONFD_NODE_ROLE_DRAINED,
 745  CONFD_NODE_ROLE_REGULAR,
 746  ) = range(5)
 747
 748 # A few common errors for confd
 749 CONFD_ERROR_UNKNOWN_ENTRY = 1
 750 CONFD_ERROR_INTERNAL = 2
 751 CONFD_ERROR_ARGUMENT = 3
 752
 753 # Each request is "salted" by the current timestamp.
 754 # This constants decides how many seconds of skew to accept.
 755 # TODO: make this a default and allow the value to be more configurable
 756 CONFD_MAX_CLOCK_SKEW = 2 * NODE_MAX_CLOCK_SKEW
 757
 758 # When we haven't reloaded the config for more than this amount of seconds, we
 759 # force a test to see if inotify is betraying us.
 760 CONFD_CONFIG_RELOAD_TIMEOUT = 60
 761
 762 # If we receive more than one update in this amount of seconds, we move to
 763 # polling every RATELIMIT seconds, rather than relying on inotify, to be able
 764 # to serve more requests.
 765 CONFD_CONFIG_RELOAD_RATELIMIT = 2
 766
 767 # Magic number prepended to all confd queries.
 768 # This allows us to distinguish different types of confd protocols and handle
 769 # them. For example by changing this we can move the whole payload to be
 770 # compressed, or move away from json.
 771 CONFD_MAGIC_FOURCC = 'plj0'
 772
 773 # By default a confd request is sent to the minimum between this number and all
 774 # MCs. 6 was chosen because even in the case of a disastrous 50% response rate,
 775 # we should have enough answers to be able to compare more than one.
 776 CONFD_DEFAULT_REQ_COVERAGE = 6
 777
 778 # Timeout in seconds to expire pending query request in the confd client
 779 # library. We don't actually expect any answer more than 10 seconds after we
 780 # sent a request.
 781 CONFD_CLIENT_EXPIRE_TIMEOUT = 10
 782
 783 # Maximum UDP datagram size.
 784 # On IPv4: 64K - 20 (ip header size) - 8 (udp header size) = 65507
 785 # On IPv6: 64K - 40 (ip6 header size) - 8 (udp header size) = 65487
 786 #   (assuming we can't use jumbo frames)
 787 # We just set this to 60K, which should be enough
 788 MAX_UDP_DATA_SIZE = 61440