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 NODED_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 ENABLE_FILE_STORAGE = _autoconf.ENABLE_FILE_STORAGE
 113 SYSCONFDIR = _autoconf.SYSCONFDIR
 114 TOOLSDIR = _autoconf.TOOLSDIR
 115 CONF_DIR = SYSCONFDIR + "/ganeti"
 116
 117 ALL_CERT_FILES = frozenset([NODED_CERT_FILE, RAPI_CERT_FILE])
 118
 119 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 120
 121 NODED = "ganeti-noded"
 122 CONFD = "ganeti-confd"
 123 RAPI = "ganeti-rapi"
 124 MASTERD = "ganeti-masterd"
 125 # used in the ganeti-nbma project
 126 NLD = "ganeti-nld"
 127
 128 MULTITHREADED_DAEMONS = frozenset([MASTERD])
 129
 130 DAEMONS_SSL = {
 131   # daemon-name: (default-cert-path, default-key-path)
 132   NODED: (NODED_CERT_FILE, NODED_CERT_FILE),
 133   RAPI: (RAPI_CERT_FILE, RAPI_CERT_FILE),
 134 }
 135
 136 DAEMONS_PORTS = {
 137   # daemon-name: ("proto", "default-port")
 138   NODED: ("tcp", 1811),
 139   CONFD: ("udp", 1814),
 140   RAPI: ("tcp", 5080),
 141   # used in the ganeti-nbma project
 142   NLD: ("udp", 1816),
 143 }
 144 DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
 145 DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
 146 DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
 147 # used in the ganeti-nbma project
 148 DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
 149
 150 FIRST_DRBD_PORT = 11000
 151 LAST_DRBD_PORT = 14999
 152 MASTER_SCRIPT = "ganeti-master"
 153
 154 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
 155 DAEMONS_LOGFILES = {
 156   # "daemon-name": "logfile"
 157   NODED: LOG_DIR + "node-daemon.log",
 158   CONFD: LOG_DIR + "conf-daemon.log",
 159   RAPI: LOG_DIR + "rapi-daemon.log",
 160   MASTERD: LOG_DIR + "master-daemon.log",
 161   # used in the ganeti-nbma project
 162   NLD: LOG_DIR + "nl-daemon.log",
 163   }
 164 LOG_OS_DIR = LOG_DIR + "os"
 165 LOG_WATCHER = LOG_DIR + "watcher.log"
 166 LOG_COMMANDS = LOG_DIR + "commands.log"
 167 LOG_BURNIN = LOG_DIR + "burnin.log"
 168
 169 # one of 'no', 'yes', 'only'
 170 SYSLOG_USAGE = _autoconf.SYSLOG_USAGE
 171 SYSLOG_NO = "no"
 172 SYSLOG_YES = "yes"
 173 SYSLOG_ONLY = "only"
 174 SYSLOG_SOCKET = "/dev/log"
 175
 176 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
 177 EXPORT_DIR = _autoconf.EXPORT_DIR
 178
 179 EXPORT_CONF_FILE = "config.ini"
 180
 181 XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
 182 XEN_KERNEL = _autoconf.XEN_KERNEL
 183 XEN_INITRD = _autoconf.XEN_INITRD
 184
 185 KVM_PATH = _autoconf.KVM_PATH
 186 SOCAT_PATH = _autoconf.SOCAT_PATH
 187 SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
 188 SOCAT_ESCAPE_CODE = "0x1d"
 189
 190 VALUE_DEFAULT = "default"
 191 VALUE_AUTO = "auto"
 192 VALUE_GENERATE = "generate"
 193 VALUE_NONE = "none"
 194 VALUE_TRUE = "true"
 195 VALUE_FALSE = "false"
 196
 197 # External script validation mask
 198 EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")
 199
 200 # hooks-related constants
 201 HOOKS_BASE_DIR = CONF_DIR + "/hooks"
 202 HOOKS_PHASE_PRE = "pre"
 203 HOOKS_PHASE_POST = "post"
 204 HOOKS_NAME_CFGUPDATE = "config-update"
 205 HOOKS_NAME_WATCHER = "watcher"
 206 HOOKS_VERSION = 2
 207
 208 # hooks subject type (what object type does the LU deal with)
 209 HTYPE_CLUSTER = "CLUSTER"
 210 HTYPE_NODE = "NODE"
 211 HTYPE_INSTANCE = "INSTANCE"
 212
 213 HKR_SKIP = 0
 214 HKR_FAIL = 1
 215 HKR_SUCCESS = 2
 216
 217 # Storage types
 218 ST_FILE = "file"
 219 ST_LVM_PV = "lvm-pv"
 220 ST_LVM_VG = "lvm-vg"
 221
 222 # Storage fields
 223 # first two are valid in LU context only, not passed to backend
 224 SF_NODE = "node"
 225 SF_TYPE = "type"
 226 # and the rest are valid in backend
 227 SF_NAME = "name"
 228 SF_SIZE = "size"
 229 SF_FREE = "free"
 230 SF_USED = "used"
 231 SF_ALLOCATABLE = "allocatable"
 232
 233 # Storage operations
 234 SO_FIX_CONSISTENCY = "fix-consistency"
 235
 236 # Available fields per storage type
 237 VALID_STORAGE_FIELDS = frozenset([SF_NAME, SF_TYPE, SF_SIZE,
 238                                   SF_USED, SF_FREE, SF_ALLOCATABLE])
 239
 240 VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
 241
 242 MODIFIABLE_STORAGE_FIELDS = {
 243   ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
 244   }
 245
 246 VALID_STORAGE_OPERATIONS = {
 247   ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
 248   }
 249
 250 # Local disk status
 251 # Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
 252 (LDS_OKAY,
 253  LDS_UNKNOWN,
 254  LDS_FAULTY) = range(1, 4)
 255
 256 # disk template types
 257 DT_DISKLESS = "diskless"
 258 DT_PLAIN = "plain"
 259 DT_DRBD8 = "drbd"
 260 DT_FILE = "file"
 261
 262 # the set of network-mirrored disk templates
 263 DTS_NET_MIRROR = frozenset([DT_DRBD8])
 264
 265 # the set of non-lvm-based disk templates
 266 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE])
 267
 268 # logical disk types
 269 LD_LV = "lvm"
 270 LD_DRBD8 = "drbd8"
 271 LD_FILE = "file"
 272 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8])
 273
 274 # drbd constants
 275 DRBD_HMAC_ALG = "md5"
 276 DRBD_NET_PROTOCOL = "C"
 277 DRBD_BARRIERS = _autoconf.DRBD_BARRIERS
 278
 279 # file backend driver
 280 FD_LOOP = "loop"
 281 FD_BLKTAP = "blktap"
 282
 283 # the set of drbd-like disk types
 284 LDS_DRBD = frozenset([LD_DRBD8])
 285
 286 # disk access mode
 287 DISK_RDONLY = "ro"
 288 DISK_RDWR = "rw"
 289 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
 290
 291 # disk replacement mode
 292 REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
 293 REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
 294 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
 295 REPLACE_DISK_AUTO = "replace_auto"
 296
 297 # lock recalculate mode
 298 LOCKS_REPLACE = 'replace'
 299 LOCKS_APPEND = 'append'
 300
 301 # instance creation modes
 302 INSTANCE_CREATE = "create"
 303 INSTANCE_IMPORT = "import"
 304
 305 DISK_TEMPLATES = frozenset([DT_DISKLESS, DT_PLAIN,
 306                             DT_DRBD8, DT_FILE])
 307
 308 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
 309
 310 # import/export config options
 311 INISECT_EXP = "export"
 312 INISECT_INS = "instance"
 313
 314 # dynamic device modification
 315
 316 DDM_ADD = 'add'
 317 DDM_REMOVE = 'remove'
 318
 319 # common exit codes
 320 EXIT_SUCCESS = 0
 321 EXIT_FAILURE = 1
 322 EXIT_NOTCLUSTER = 5
 323 EXIT_NOTMASTER = 11
 324 EXIT_NODESETUP_ERROR = 12
 325 EXIT_CONFIRMATION = 13 # need user confirmation
 326 EXIT_NOTCANDIDATE = 14
 327
 328 # tags
 329 TAG_CLUSTER = "cluster"
 330 TAG_NODE = "node"
 331 TAG_INSTANCE = "instance"
 332 MAX_TAG_LEN = 128
 333 MAX_TAGS_PER_OBJ = 4096
 334
 335 # others
 336 DEFAULT_BRIDGE = "xen-br0"
 337 SYNC_SPEED = 60 * 1024
 338 LOCALHOST_IP_ADDRESS = "127.0.0.1"
 339 TCP_PING_TIMEOUT = 10
 340 GANETI_RUNAS = "root"
 341 DEFAULT_VG = "xenvg"
 342 BIND_ADDRESS_GLOBAL = "0.0.0.0"
 343 MIN_VG_SIZE = 20480
 344 DEFAULT_MAC_PREFIX = "aa:00:00"
 345 LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT
 346 # default maximum instance wait time, in seconds.
 347 DEFAULT_SHUTDOWN_TIMEOUT = 120
 348 NODE_MAX_CLOCK_SKEW = 150
 349
 350 # runparts results
 351 (RUNPARTS_SKIP,
 352  RUNPARTS_RUN,
 353  RUNPARTS_ERR) = range(3)
 354
 355 RUNPARTS_STATUS = frozenset([RUNPARTS_SKIP, RUNPARTS_RUN, RUNPARTS_ERR])
 356
 357 # RPC constants
 358 (RPC_ENCODING_NONE,
 359  RPC_ENCODING_ZLIB_BASE64) = range(2)
 360
 361 # os related constants
 362 OS_SCRIPT_CREATE = 'create'
 363 OS_SCRIPT_IMPORT = 'import'
 364 OS_SCRIPT_EXPORT = 'export'
 365 OS_SCRIPT_RENAME = 'rename'
 366 OS_SCRIPTS = frozenset([OS_SCRIPT_CREATE, OS_SCRIPT_IMPORT,
 367                         OS_SCRIPT_EXPORT, OS_SCRIPT_RENAME])
 368
 369 OS_API_FILE = 'ganeti_api_version'
 370 OS_VARIANTS_FILE = 'variants.list'
 371
 372 # ssh constants
 373 SSH_CONFIG_DIR = _autoconf.SSH_CONFIG_DIR
 374 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_dsa_key"
 375 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
 376 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_rsa_key"
 377 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
 378 SSH = "ssh"
 379 SCP = "scp"
 380
 381 # reboot types
 382 INSTANCE_REBOOT_SOFT = "soft"
 383 INSTANCE_REBOOT_HARD = "hard"
 384 INSTANCE_REBOOT_FULL = "full"
 385
 386 REBOOT_TYPES = frozenset([INSTANCE_REBOOT_SOFT,
 387                           INSTANCE_REBOOT_HARD,
 388                           INSTANCE_REBOOT_FULL])
 389
 390 VTYPE_STRING = 'string'
 391 VTYPE_BOOL = 'bool'
 392 VTYPE_SIZE = 'size' # size, in MiBs
 393 VTYPE_INT = 'int'
 394 ENFORCEABLE_TYPES = frozenset([
 395                       VTYPE_STRING,
 396                       VTYPE_BOOL,
 397                       VTYPE_SIZE,
 398                       VTYPE_INT,
 399                       ])
 400
 401 # HV parameter names (global namespace)
 402 HV_BOOT_ORDER = "boot_order"
 403 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
 404 HV_NIC_TYPE = "nic_type"
 405 HV_DISK_TYPE = "disk_type"
 406 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
 407 HV_VNC_PASSWORD_FILE = "vnc_password_file"
 408 HV_VNC_TLS = "vnc_tls"
 409 HV_VNC_X509 = "vnc_x509_path"
 410 HV_VNC_X509_VERIFY = "vnc_x509_verify"
 411 HV_ACPI = "acpi"
 412 HV_PAE = "pae"
 413 HV_USE_BOOTLOADER = "use_bootloader"
 414 HV_BOOTLOADER_ARGS = "bootloader_args"
 415 HV_BOOTLOADER_PATH = "bootloader_path"
 416 HV_KERNEL_ARGS = "kernel_args"
 417 HV_KERNEL_PATH = "kernel_path"
 418 HV_INITRD_PATH = "initrd_path"
 419 HV_ROOT_PATH = "root_path"
 420 HV_SERIAL_CONSOLE = "serial_console"
 421 HV_USB_MOUSE = "usb_mouse"
 422 HV_DEVICE_MODEL = "device_model"
 423 HV_INIT_SCRIPT = "init_script"
 424 HV_MIGRATION_PORT = "migration_port"
 425 HV_USE_LOCALTIME = "use_localtime"
 426 HV_DISK_CACHE = "disk_cache"
 427 HV_SECURITY_MODEL = "security_model"
 428 HV_SECURITY_DOMAIN = "security_domain"
 429
 430 HVS_PARAMETER_TYPES = {
 431   HV_BOOT_ORDER: VTYPE_STRING,
 432   HV_CDROM_IMAGE_PATH: VTYPE_STRING,
 433   HV_NIC_TYPE: VTYPE_STRING,
 434   HV_DISK_TYPE: VTYPE_STRING,
 435   HV_VNC_PASSWORD_FILE: VTYPE_STRING,
 436   HV_VNC_BIND_ADDRESS: VTYPE_STRING,
 437   HV_VNC_TLS: VTYPE_BOOL,
 438   HV_VNC_X509: VTYPE_STRING,
 439   HV_VNC_X509_VERIFY: VTYPE_BOOL,
 440   HV_ACPI: VTYPE_BOOL,
 441   HV_PAE: VTYPE_BOOL,
 442   HV_USE_BOOTLOADER: VTYPE_BOOL,
 443   HV_BOOTLOADER_PATH: VTYPE_STRING,
 444   HV_BOOTLOADER_ARGS: VTYPE_STRING,
 445   HV_KERNEL_PATH: VTYPE_STRING,
 446   HV_KERNEL_ARGS: VTYPE_STRING,
 447   HV_INITRD_PATH: VTYPE_STRING,
 448   HV_ROOT_PATH: VTYPE_STRING,
 449   HV_SERIAL_CONSOLE: VTYPE_BOOL,
 450   HV_USB_MOUSE: VTYPE_STRING,
 451   HV_DEVICE_MODEL: VTYPE_STRING,
 452   HV_INIT_SCRIPT: VTYPE_STRING,
 453   HV_MIGRATION_PORT: VTYPE_INT,
 454   HV_USE_LOCALTIME: VTYPE_BOOL,
 455   HV_DISK_CACHE: VTYPE_STRING,
 456   HV_SECURITY_MODEL: VTYPE_STRING,
 457   HV_SECURITY_DOMAIN: VTYPE_STRING,
 458   }
 459
 460 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
 461
 462 # BE parameter names
 463 BE_MEMORY = "memory"
 464 BE_VCPUS = "vcpus"
 465 BE_AUTO_BALANCE = "auto_balance"
 466
 467 BES_PARAMETER_TYPES = {
 468     BE_MEMORY: VTYPE_SIZE,
 469     BE_VCPUS: VTYPE_INT,
 470     BE_AUTO_BALANCE: VTYPE_BOOL,
 471     }
 472
 473 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 474
 475 # Instance Parameters Profile
 476 PP_DEFAULT = "default"
 477
 478 NIC_MODE = "mode"
 479 NIC_LINK = "link"
 480
 481 NIC_MODE_BRIDGED = "bridged"
 482 NIC_MODE_ROUTED = "routed"
 483
 484 NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])
 485
 486 NICS_PARAMETER_TYPES = {
 487     NIC_MODE: VTYPE_STRING,
 488     NIC_LINK: VTYPE_STRING,
 489     }
 490
 491 NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
 492
 493 # Hypervisor constants
 494 HT_XEN_PVM = "xen-pvm"
 495 HT_FAKE = "fake"
 496 HT_XEN_HVM = "xen-hvm"
 497 HT_KVM = "kvm"
 498 HT_CHROOT = "chroot"
 499 HYPER_TYPES = frozenset([HT_XEN_PVM, HT_FAKE, HT_XEN_HVM, HT_KVM, HT_CHROOT])
 500 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
 501
 502 VNC_BASE_PORT = 5900
 503 VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
 504 VNC_DEFAULT_BIND_ADDRESS = '0.0.0.0'
 505
 506 # NIC types
 507 HT_NIC_RTL8139 = "rtl8139"
 508 HT_NIC_NE2K_PCI = "ne2k_pci"
 509 HT_NIC_NE2K_ISA = "ne2k_isa"
 510 HT_NIC_I82551 = "i82551"
 511 HT_NIC_I85557B = "i82557b"
 512 HT_NIC_I8259ER = "i82559er"
 513 HT_NIC_PCNET = "pcnet"
 514 HT_NIC_E1000 = "e1000"
 515 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
 516
 517 HT_HVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 518                                     HT_NIC_NE2K_ISA, HT_NIC_PARAVIRTUAL])
 519 HT_KVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 520                                     HT_NIC_NE2K_ISA, HT_NIC_I82551,
 521                                     HT_NIC_I85557B, HT_NIC_I8259ER,
 522                                     HT_NIC_PCNET, HT_NIC_E1000,
 523                                     HT_NIC_PARAVIRTUAL])
 524 # Disk types
 525 HT_DISK_IOEMU = "ioemu"
 526 HT_DISK_IDE = "ide"
 527 HT_DISK_SCSI = "scsi"
 528 HT_DISK_SD = "sd"
 529 HT_DISK_MTD = "mtd"
 530 HT_DISK_PFLASH = "pflash"
 531
 532 HT_CACHE_DEFAULT = "default"
 533 HT_CACHE_NONE = "none"
 534 HT_CACHE_WTHROUGH = "writethrough"
 535 HT_CACHE_WBACK = "writeback"
 536 HT_VALID_CACHE_TYPES = frozenset([HT_CACHE_DEFAULT,
 537                                   HT_CACHE_NONE,
 538                                   HT_CACHE_WTHROUGH,
 539                                   HT_CACHE_WBACK])
 540
 541 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
 542 HT_KVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IDE,
 543                                      HT_DISK_SCSI, HT_DISK_SD, HT_DISK_MTD,
 544                                      HT_DISK_PFLASH])
 545
 546 # Mouse types:
 547 HT_MOUSE_MOUSE = "mouse"
 548 HT_MOUSE_TABLET = "tablet"
 549
 550 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
 551
 552 # Boot order
 553 HT_BO_CDROM = "cdrom"
 554 HT_BO_DISK = "disk"
 555 HT_BO_NETWORK = "network"
 556
 557 HT_KVM_VALID_BO_TYPES = frozenset([HT_BO_CDROM, HT_BO_DISK, HT_BO_NETWORK])
 558
 559 # Security models
 560 HT_SM_NONE = "none"
 561 HT_SM_USER = "user"
 562 HT_SM_POOL = "pool"
 563
 564 HT_KVM_VALID_SM_TYPES = frozenset([HT_SM_NONE, HT_SM_USER, HT_SM_POOL])
 565
 566 # Cluster Verify steps
 567 VERIFY_NPLUSONE_MEM = 'nplusone_mem'
 568 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
 569
 570 # Node verify constants
 571 NV_FILELIST = "filelist"
 572 NV_HVINFO = "hvinfo"
 573 NV_HYPERVISOR = "hypervisor"
 574 NV_INSTANCELIST = "instancelist"
 575 NV_NODELIST = "nodelist"
 576 NV_NODENETTEST = "node-net-test"
 577 NV_VERSION = "version"
 578 NV_VGLIST = "vglist"
 579 NV_LVLIST = "lvlist"
 580 NV_PVLIST = "pvlist"
 581 NV_DRBDLIST = "drbd-list"
 582 NV_NODESETUP = "nodesetup"
 583 NV_TIME = "time"
 584
 585 # SSL certificate check constants (in days)
 586 SSL_CERT_EXPIRATION_WARN = 30
 587 SSL_CERT_EXPIRATION_ERROR = 7
 588
 589 # Allocator framework constants
 590 IALLOCATOR_VERSION = 2
 591 IALLOCATOR_DIR_IN = "in"
 592 IALLOCATOR_DIR_OUT = "out"
 593 IALLOCATOR_MODE_ALLOC = "allocate"
 594 IALLOCATOR_MODE_RELOC = "relocate"
 595 IALLOCATOR_MODE_MEVAC = "multi-evacuate"
 596 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
 597
 598 # Job queue
 599 JOB_QUEUE_VERSION = 1
 600 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
 601 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
 602 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
 603 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
 604 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
 605 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
 606 JOB_QUEUE_SIZE_SOFT_LIMIT = JOB_QUEUE_SIZE_HARD_LIMIT * 0.8
 607
 608 JOB_ID_TEMPLATE = r"\d+"
 609
 610 # unchanged job return
 611 JOB_NOTCHANGED = "nochange"
 612
 613 # Job status
 614 JOB_STATUS_QUEUED = "queued"
 615 JOB_STATUS_WAITLOCK = "waiting"
 616 JOB_STATUS_CANCELING = "canceling"
 617 JOB_STATUS_RUNNING = "running"
 618 JOB_STATUS_CANCELED = "canceled"
 619 JOB_STATUS_SUCCESS = "success"
 620 JOB_STATUS_ERROR = "error"
 621
 622 # OpCode status
 623 # not yet finalized
 624 OP_STATUS_QUEUED = "queued"
 625 OP_STATUS_WAITLOCK = "waiting"
 626 OP_STATUS_CANCELING = "canceling"
 627 OP_STATUS_RUNNING = "running"
 628 # finalized
 629 OP_STATUS_CANCELED = "canceled"
 630 OP_STATUS_SUCCESS = "success"
 631 OP_STATUS_ERROR = "error"
 632 OPS_FINALIZED = frozenset([OP_STATUS_CANCELED,
 633                            OP_STATUS_SUCCESS,
 634                            OP_STATUS_ERROR])
 635
 636 # Execution log types
 637 ELOG_MESSAGE = "message"
 638 ELOG_PROGRESS = "progress"
 639
 640 # max dynamic devices
 641 MAX_NICS = 8
 642 MAX_DISKS = 16
 643
 644 # SSCONF keys
 645 SS_CLUSTER_NAME = "cluster_name"
 646 SS_CLUSTER_TAGS = "cluster_tags"
 647 SS_FILE_STORAGE_DIR = "file_storage_dir"
 648 SS_MASTER_CANDIDATES = "master_candidates"
 649 SS_MASTER_CANDIDATES_IPS = "master_candidates_ips"
 650 SS_MASTER_IP = "master_ip"
 651 SS_MASTER_NETDEV = "master_netdev"
 652 SS_MASTER_NODE = "master_node"
 653 SS_NODE_LIST = "node_list"
 654 SS_NODE_PRIMARY_IPS = "node_primary_ips"
 655 SS_NODE_SECONDARY_IPS = "node_secondary_ips"
 656 SS_OFFLINE_NODES = "offline_nodes"
 657 SS_ONLINE_NODES = "online_nodes"
 658 SS_INSTANCE_LIST = "instance_list"
 659 SS_RELEASE_VERSION = "release_version"
 660
 661 # cluster wide default parameters
 662 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
 663
 664 HVC_DEFAULTS = {
 665   HT_XEN_PVM: {
 666     HV_USE_BOOTLOADER: False,
 667     HV_BOOTLOADER_PATH: XEN_BOOTLOADER,
 668     HV_BOOTLOADER_ARGS: '',
 669     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU",
 670     HV_INITRD_PATH: '',
 671     HV_ROOT_PATH: '/dev/sda1',
 672     HV_KERNEL_ARGS: 'ro',
 673     HV_MIGRATION_PORT: 8002,
 674     },
 675   HT_XEN_HVM: {
 676     HV_BOOT_ORDER: "cd",
 677     HV_CDROM_IMAGE_PATH: '',
 678     HV_NIC_TYPE: HT_NIC_RTL8139,
 679     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
 680     HV_VNC_BIND_ADDRESS: '0.0.0.0',
 681     HV_VNC_PASSWORD_FILE: VNC_PASSWORD_FILE,
 682     HV_ACPI: True,
 683     HV_PAE: True,
 684     HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
 685     HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
 686     HV_MIGRATION_PORT: 8002,
 687     HV_USE_LOCALTIME: False,
 688     },
 689   HT_KVM: {
 690     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU",
 691     HV_INITRD_PATH: '',
 692     HV_KERNEL_ARGS: 'ro',
 693     HV_ROOT_PATH: '/dev/vda1',
 694     HV_ACPI: True,
 695     HV_SERIAL_CONSOLE: True,
 696     HV_VNC_BIND_ADDRESS: '',
 697     HV_VNC_TLS: False,
 698     HV_VNC_X509: '',
 699     HV_VNC_X509_VERIFY: False,
 700     HV_VNC_PASSWORD_FILE: '',
 701     HV_CDROM_IMAGE_PATH: '',
 702     HV_BOOT_ORDER: HT_BO_DISK,
 703     HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
 704     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
 705     HV_USB_MOUSE: '',
 706     HV_MIGRATION_PORT: 8102,
 707     HV_USE_LOCALTIME: False,
 708     HV_DISK_CACHE: HT_CACHE_DEFAULT,
 709     HV_SECURITY_MODEL: HT_SM_NONE,
 710     HV_SECURITY_DOMAIN: '',
 711     },
 712   HT_FAKE: {
 713     },
 714   HT_CHROOT: {
 715     HV_INIT_SCRIPT: "/ganeti-chroot",
 716     },
 717   }
 718
 719 HVC_GLOBALS = frozenset([
 720   HV_MIGRATION_PORT,
 721   ])
 722
 723 BEC_DEFAULTS = {
 724   BE_MEMORY: 128,
 725   BE_VCPUS: 1,
 726   BE_AUTO_BALANCE: True,
 727   }
 728
 729 NICC_DEFAULTS = {
 730   NIC_MODE: NIC_MODE_BRIDGED,
 731   NIC_LINK: DEFAULT_BRIDGE,
 732   }
 733
 734 MASTER_POOL_SIZE_DEFAULT = 10
 735
 736 CONFD_PROTOCOL_VERSION = 1
 737
 738 CONFD_REQ_PING = 0
 739 CONFD_REQ_NODE_ROLE_BYNAME = 1
 740 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP = 2
 741 CONFD_REQ_CLUSTER_MASTER = 3
 742 CONFD_REQ_NODE_PIP_LIST = 4
 743 CONFD_REQ_MC_PIP_LIST = 5
 744 CONFD_REQ_INSTANCES_IPS_LIST = 6
 745
 746 # Confd request query fields. These are used to narrow down queries.
 747 # These must be strings rather than integers, because json-encoding
 748 # converts them to strings anyway, as they're used as dict-keys.
 749 CONFD_REQQ_LINK = "0"
 750 CONFD_REQQ_IP = "1"
 751 CONFD_REQQ_IPLIST = "2"
 752 CONFD_REQQ_FIELDS = "3"
 753
 754 CONFD_REQFIELD_NAME = "0"
 755 CONFD_REQFIELD_IP = "1"
 756 CONFD_REQFIELD_MNODE_PIP = "2"
 757
 758 CONFD_REQS = frozenset([
 759   CONFD_REQ_PING,
 760   CONFD_REQ_NODE_ROLE_BYNAME,
 761   CONFD_REQ_NODE_PIP_BY_INSTANCE_IP,
 762   CONFD_REQ_CLUSTER_MASTER,
 763   CONFD_REQ_NODE_PIP_LIST,
 764   CONFD_REQ_MC_PIP_LIST,
 765   CONFD_REQ_INSTANCES_IPS_LIST,
 766   ])
 767
 768 CONFD_REPL_STATUS_OK = 0
 769 CONFD_REPL_STATUS_ERROR = 1
 770 CONFD_REPL_STATUS_NOTIMPLEMENTED = 2
 771
 772 CONFD_REPL_STATUSES = frozenset([
 773   CONFD_REPL_STATUS_OK,
 774   CONFD_REPL_STATUS_ERROR,
 775   CONFD_REPL_STATUS_NOTIMPLEMENTED,
 776   ])
 777
 778 (CONFD_NODE_ROLE_MASTER,
 779  CONFD_NODE_ROLE_CANDIDATE,
 780  CONFD_NODE_ROLE_OFFLINE,
 781  CONFD_NODE_ROLE_DRAINED,
 782  CONFD_NODE_ROLE_REGULAR,
 783  ) = range(5)
 784
 785 # A few common errors for confd
 786 CONFD_ERROR_UNKNOWN_ENTRY = 1
 787 CONFD_ERROR_INTERNAL = 2
 788 CONFD_ERROR_ARGUMENT = 3
 789
 790 # Each request is "salted" by the current timestamp.
 791 # This constants decides how many seconds of skew to accept.
 792 # TODO: make this a default and allow the value to be more configurable
 793 CONFD_MAX_CLOCK_SKEW = 2 * NODE_MAX_CLOCK_SKEW
 794
 795 # When we haven't reloaded the config for more than this amount of seconds, we
 796 # force a test to see if inotify is betraying us.
 797 CONFD_CONFIG_RELOAD_TIMEOUT = 60
 798
 799 # If we receive more than one update in this amount of seconds, we move to
 800 # polling every RATELIMIT seconds, rather than relying on inotify, to be able
 801 # to serve more requests.
 802 CONFD_CONFIG_RELOAD_RATELIMIT = 2
 803
 804 # Magic number prepended to all confd queries.
 805 # This allows us to distinguish different types of confd protocols and handle
 806 # them. For example by changing this we can move the whole payload to be
 807 # compressed, or move away from json.
 808 CONFD_MAGIC_FOURCC = 'plj0'
 809
 810 # By default a confd request is sent to the minimum between this number and all
 811 # MCs. 6 was chosen because even in the case of a disastrous 50% response rate,
 812 # we should have enough answers to be able to compare more than one.
 813 CONFD_DEFAULT_REQ_COVERAGE = 6
 814
 815 # Timeout in seconds to expire pending query request in the confd client
 816 # library. We don't actually expect any answer more than 10 seconds after we
 817 # sent a request.
 818 CONFD_CLIENT_EXPIRE_TIMEOUT = 10
 819
 820 # Maximum UDP datagram size.
 821 # On IPv4: 64K - 20 (ip header size) - 8 (udp header size) = 65507
 822 # On IPv6: 64K - 40 (ip6 header size) - 8 (udp header size) = 65487
 823 #   (assuming we can't use jumbo frames)
 824 # We just set this to 60K, which should be enough
 825 MAX_UDP_DATA_SIZE = 61440