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

   1 #
   2 #
   3
   4 # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 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 from ganeti import _vcsversion
  28
  29 # various versions
  30 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
  31 OS_API_V10 = 10
  32 OS_API_V15 = 15
  33 OS_API_V20 = 20
  34 OS_API_VERSIONS = frozenset([OS_API_V10, OS_API_V15, OS_API_V20])
  35 VCS_VERSION = _vcsversion.VCS_VERSION
  36 EXPORT_VERSION = 0
  37 RAPI_VERSION = 2
  38
  39
  40 # Format for CONFIG_VERSION:
  41 #   01 03 0123 = 01030123
  42 #   ^^ ^^ ^^^^
  43 #   |  |  + Configuration version/revision
  44 #   |  + Minor version
  45 #   + Major version
  46 #
  47 # It stored as an integer. Make sure not to write an octal number.
  48
  49 # BuildVersion and SplitVersion must be in here because we can't import other
  50 # modules. The cfgupgrade tool must be able to read and write version numbers
  51 # and thus requires these functions. To avoid code duplication, they're kept in
  52 # here.
  53
  54 def BuildVersion(major, minor, revision):
  55   """Calculates int version number from major, minor and revision numbers.
  56
  57   Returns: int representing version number
  58
  59   """
  60   assert isinstance(major, int)
  61   assert isinstance(minor, int)
  62   assert isinstance(revision, int)
  63   return (1000000 * major +
  64             10000 * minor +
  65                 1 * revision)
  66
  67
  68 def SplitVersion(version):
  69   """Splits version number stored in an int.
  70
  71   Returns: tuple; (major, minor, revision)
  72
  73   """
  74   assert isinstance(version, int)
  75
  76   (major, remainder) = divmod(version, 1000000)
  77   (minor, revision) = divmod(remainder, 10000)
  78
  79   return (major, minor, revision)
  80
  81
  82 CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
  83 CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
  84 CONFIG_REVISION = 0
  85 CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
  86
  87 #: RPC protocol version
  88 PROTOCOL_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, 0)
  89
  90 # user separation
  91 DAEMONS_GROUP = _autoconf.DAEMONS_GROUP
  92 ADMIN_GROUP = _autoconf.ADMIN_GROUP
  93 MASTERD_USER = _autoconf.MASTERD_USER
  94 MASTERD_GROUP = _autoconf.MASTERD_GROUP
  95 RAPI_USER = _autoconf.RAPI_USER
  96 RAPI_GROUP = _autoconf.RAPI_GROUP
  97 CONFD_USER = _autoconf.CONFD_USER
  98 CONFD_GROUP = _autoconf.CONFD_GROUP
  99 NODED_USER = _autoconf.NODED_USER
 100 NODED_GROUP = _autoconf.NODED_GROUP
 101
 102 # cpu pinning separators and constants
 103 CPU_PINNING_SEP = ":"
 104 CPU_PINNING_ALL = "all"
 105 # internal representation of "all"
 106 CPU_PINNING_ALL_VAL = -1
 107 # one "all" entry in a CPU list means CPU pinning is off
 108 CPU_PINNING_OFF = [CPU_PINNING_ALL_VAL]
 109
 110 # A Xen-specific implementation detail - there is no way to actually say
 111 # "use any cpu for pinning" in a Xen configuration file, as opposed to the
 112 # command line, where you can say "xm vcpu-pin <domain> <vcpu> all".
 113 # The workaround used in Xen is "0-63" (see source code function
 114 # xm_vcpu_pin in <xen-source>/tools/python/xen/xm/main.py).
 115 # To support future changes, the following constant is treated as a
 116 # blackbox string that simply means use-any-cpu-for-pinning-under-xen.
 117 CPU_PINNING_ALL_XEN = "0-63"
 118
 119 # A KVM-specific implementation detail - the following value is used
 120 # to set CPU affinity to all processors (#0 through #31), per taskset
 121 # man page.
 122 CPU_PINNING_ALL_KVM = 0xFFFFFFFF
 123
 124 # Wipe
 125 DD_CMD = "dd"
 126 WIPE_BLOCK_SIZE = 1024 ** 2
 127 MAX_WIPE_CHUNK = 1024 # 1GB
 128 MIN_WIPE_CHUNK_PERCENT = 10
 129
 130
 131 # file paths
 132 DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti"
 133 RUN_DIR = _autoconf.LOCALSTATEDIR + "/run"
 134 RUN_GANETI_DIR = RUN_DIR + "/ganeti"
 135 BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache"
 136 DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks"
 137 RUN_DIRS_MODE = 0775
 138 SOCKET_DIR = RUN_GANETI_DIR + "/socket"
 139 SECURE_DIR_MODE = 0700
 140 SECURE_FILE_MODE = 0600
 141 SOCKET_DIR_MODE = 0750
 142 CRYPTO_KEYS_DIR = RUN_GANETI_DIR + "/crypto"
 143 CRYPTO_KEYS_DIR_MODE = SECURE_DIR_MODE
 144 IMPORT_EXPORT_DIR = RUN_GANETI_DIR + "/import-export"
 145 IMPORT_EXPORT_DIR_MODE = 0755
 146 ADOPTABLE_BLOCKDEV_ROOT = "/dev/disk/"
 147 # keep RUN_GANETI_DIR first here, to make sure all get created when the node
 148 # daemon is started (this takes care of RUN_DIR being tmpfs)
 149 SUB_RUN_DIRS = [
 150   RUN_GANETI_DIR,
 151   BDEV_CACHE_DIR,
 152   DISK_LINKS_DIR,
 153   ]
 154 LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock"
 155 SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock"
 156 # User-id pool lock directory
 157 # The user-ids that are in use have a corresponding lock file in this directory
 158 UIDPOOL_LOCKDIR = RUN_GANETI_DIR + "/uid-pool"
 159 CLUSTER_CONF_FILE = DATA_DIR + "/config.data"
 160 NODED_CERT_FILE = DATA_DIR + "/server.pem"
 161 RAPI_CERT_FILE = DATA_DIR + "/rapi.pem"
 162 CONFD_HMAC_KEY = DATA_DIR + "/hmac.key"
 163 SPICE_CERT_FILE = DATA_DIR + "/spice.pem"
 164 SPICE_CACERT_FILE = DATA_DIR + "/spice-ca.pem"
 165 CLUSTER_DOMAIN_SECRET_FILE = DATA_DIR + "/cluster-domain-secret"
 166 INSTANCE_STATUS_FILE = RUN_GANETI_DIR + "/instance-status"
 167 SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts"
 168 RAPI_USERS_FILE = DATA_DIR + "/rapi/users"
 169 QUEUE_DIR = DATA_DIR + "/queue"
 170 DAEMON_UTIL = _autoconf.PKGLIBDIR + "/daemon-util"
 171 SETUP_SSH = _autoconf.TOOLSDIR + "/setup-ssh"
 172 KVM_IFUP = _autoconf.PKGLIBDIR + "/kvm-ifup"
 173 KVM_CONSOLE_WRAPPER = _autoconf.PKGLIBDIR + "/tools/kvm-console-wrapper"
 174 XM_CONSOLE_WRAPPER = _autoconf.PKGLIBDIR + "/tools/xm-console-wrapper"
 175 ETC_HOSTS = "/etc/hosts"
 176 DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
 177 DEFAULT_SHARED_FILE_STORAGE_DIR = _autoconf.SHARED_FILE_STORAGE_DIR
 178 ENABLE_FILE_STORAGE = _autoconf.ENABLE_FILE_STORAGE
 179 ENABLE_SHARED_FILE_STORAGE = _autoconf.ENABLE_SHARED_FILE_STORAGE
 180 SYSCONFDIR = _autoconf.SYSCONFDIR
 181 TOOLSDIR = _autoconf.TOOLSDIR
 182 CONF_DIR = SYSCONFDIR + "/ganeti"
 183 USER_SCRIPTS_DIR = CONF_DIR + "/scripts"
 184 ENABLE_CONFD = _autoconf.ENABLE_CONFD
 185
 186 #: Lock file for watcher, locked in shared mode by watcher; lock in exclusive
 187 # mode to block watcher (see L{cli._RunWhileClusterStoppedHelper.Call}
 188 WATCHER_LOCK_FILE = LOCK_DIR + "/ganeti-watcher.lock"
 189
 190 #: Status file for per-group watcher, locked in exclusive mode by watcher
 191 WATCHER_GROUP_STATE_FILE = DATA_DIR + "/watcher.%s.data"
 192
 193 #: File for per-group instance status, merged into L{INSTANCE_STATUS_FILE} by
 194 #: per-group processes
 195 WATCHER_GROUP_INSTANCE_STATUS_FILE = DATA_DIR + "/watcher.%s.instance-status"
 196
 197 #: File containing Unix timestamp until which watcher should be paused
 198 WATCHER_PAUSEFILE = DATA_DIR + "/watcher.pause"
 199
 200 # Master IP address setup scripts paths (default and user-provided)
 201 DEFAULT_MASTER_SETUP_SCRIPT = TOOLSDIR + "/master-ip-setup"
 202 EXTERNAL_MASTER_SETUP_SCRIPT = USER_SCRIPTS_DIR + "/master-ip-setup"
 203
 204 ALL_CERT_FILES = frozenset([
 205   NODED_CERT_FILE,
 206   RAPI_CERT_FILE,
 207   SPICE_CERT_FILE,
 208   SPICE_CACERT_FILE,
 209   ])
 210
 211 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 212
 213 NODED = "ganeti-noded"
 214 CONFD = "ganeti-confd"
 215 RAPI = "ganeti-rapi"
 216 MASTERD = "ganeti-masterd"
 217 # used in the ganeti-nbma project
 218 NLD = "ganeti-nld"
 219
 220 DAEMONS_PORTS = {
 221   # daemon-name: ("proto", "default-port")
 222   NODED: ("tcp", 1811),
 223   CONFD: ("udp", 1814),
 224   RAPI: ("tcp", 5080),
 225   "ssh": ("tcp", 22),
 226   # used in the ganeti-nbma project
 227   NLD: ("udp", 1816),
 228 }
 229 DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
 230 DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
 231 DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
 232 # used in the ganeti-nbma project
 233 DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
 234
 235 FIRST_DRBD_PORT = 11000
 236 LAST_DRBD_PORT = 14999
 237 MASTER_SCRIPT = "ganeti-master"
 238
 239 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
 240 DAEMONS_LOGFILES = {
 241   # "daemon-name": "logfile"
 242   NODED: LOG_DIR + "node-daemon.log",
 243   CONFD: LOG_DIR + "conf-daemon.log",
 244   RAPI: LOG_DIR + "rapi-daemon.log",
 245   MASTERD: LOG_DIR + "master-daemon.log",
 246   # used in the ganeti-nbma project
 247   NLD: LOG_DIR + "nl-daemon.log",
 248   }
 249
 250 LOG_OS_DIR = LOG_DIR + "os"
 251 LOG_WATCHER = LOG_DIR + "watcher.log"
 252 LOG_COMMANDS = LOG_DIR + "commands.log"
 253 LOG_BURNIN = LOG_DIR + "burnin.log"
 254 LOG_SETUP_SSH = LOG_DIR + "setup-ssh.log"
 255
 256 DEV_CONSOLE = "/dev/console"
 257
 258 PROC_MOUNTS = "/proc/mounts"
 259
 260 # Local UniX Interface related constants
 261 LUXI_EOM = "\3"
 262 LUXI_VERSION = CONFIG_VERSION
 263
 264 # one of "no", "yes", "only"
 265 SYSLOG_USAGE = _autoconf.SYSLOG_USAGE
 266 SYSLOG_NO = "no"
 267 SYSLOG_YES = "yes"
 268 SYSLOG_ONLY = "only"
 269 SYSLOG_SOCKET = "/dev/log"
 270
 271 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
 272 EXPORT_DIR = _autoconf.EXPORT_DIR
 273
 274 EXPORT_CONF_FILE = "config.ini"
 275
 276 XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
 277 XEN_KERNEL = _autoconf.XEN_KERNEL
 278 XEN_INITRD = _autoconf.XEN_INITRD
 279 XEN_CMD = "xm"
 280
 281 KVM_PATH = _autoconf.KVM_PATH
 282 SOCAT_PATH = _autoconf.SOCAT_PATH
 283 SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
 284 SOCAT_USE_COMPRESS = _autoconf.SOCAT_USE_COMPRESS
 285 SOCAT_ESCAPE_CODE = "0x1d"
 286
 287 #: Console as SSH command
 288 CONS_SSH = "ssh"
 289
 290 #: Console as VNC server
 291 CONS_VNC = "vnc"
 292
 293 #: Console as SPICE server
 294 CONS_SPICE = "spice"
 295
 296 #: Display a message for console access
 297 CONS_MESSAGE = "msg"
 298
 299 #: All console types
 300 CONS_ALL = frozenset([CONS_SSH, CONS_VNC, CONS_SPICE, CONS_MESSAGE])
 301
 302 # For RSA keys more bits are better, but they also make operations more
 303 # expensive. NIST SP 800-131 recommends a minimum of 2048 bits from the year
 304 # 2010 on.
 305 RSA_KEY_BITS = 2048
 306
 307 # Ciphers allowed for SSL connections. For the format, see ciphers(1). A better
 308 # way to disable ciphers would be to use the exclamation mark (!), but socat
 309 # versions below 1.5 can't parse exclamation marks in options properly. When
 310 # modifying the ciphers, ensure not to accidentially add something after it's
 311 # been removed. Use the "openssl" utility to check the allowed ciphers, e.g.
 312 # "openssl ciphers -v HIGH:-DES".
 313 OPENSSL_CIPHERS = "HIGH:-DES:-3DES:-EXPORT:-ADH"
 314
 315 # Digest used to sign certificates ("openssl x509" uses SHA1 by default)
 316 X509_CERT_SIGN_DIGEST = "SHA1"
 317
 318 # Default validity of certificates in days
 319 X509_CERT_DEFAULT_VALIDITY = 365 * 5
 320
 321 # commonName (CN) used in certificates
 322 X509_CERT_CN = "ganeti.example.com"
 323
 324 X509_CERT_SIGNATURE_HEADER = "X-Ganeti-Signature"
 325
 326 IMPORT_EXPORT_DAEMON = _autoconf.PKGLIBDIR + "/import-export"
 327
 328 # Import/export daemon mode
 329 IEM_IMPORT = "import"
 330 IEM_EXPORT = "export"
 331
 332 # Import/export transport compression
 333 IEC_NONE = "none"
 334 IEC_GZIP = "gzip"
 335 IEC_ALL = frozenset([
 336   IEC_NONE,
 337   IEC_GZIP,
 338   ])
 339
 340 IE_CUSTOM_SIZE = "fd"
 341
 342 IE_MAGIC_RE = re.compile(r"^[-_.a-zA-Z0-9]{5,100}$")
 343
 344 # Import/export I/O
 345 # Direct file I/O, equivalent to a shell's I/O redirection using '<' or '>'
 346 IEIO_FILE = "file"
 347 # Raw block device I/O using "dd"
 348 IEIO_RAW_DISK = "raw"
 349 # OS definition import/export script
 350 IEIO_SCRIPT = "script"
 351
 352 VALUE_DEFAULT = "default"
 353 VALUE_AUTO = "auto"
 354 VALUE_GENERATE = "generate"
 355 VALUE_NONE = "none"
 356 VALUE_TRUE = "true"
 357 VALUE_FALSE = "false"
 358
 359 # External script validation mask
 360 EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")
 361
 362 # hooks-related constants
 363 HOOKS_BASE_DIR = CONF_DIR + "/hooks"
 364 HOOKS_PHASE_PRE = "pre"
 365 HOOKS_PHASE_POST = "post"
 366 HOOKS_NAME_CFGUPDATE = "config-update"
 367 HOOKS_NAME_WATCHER = "watcher"
 368 HOOKS_VERSION = 2
 369 HOOKS_PATH = "/sbin:/bin:/usr/sbin:/usr/bin"
 370
 371 # hooks subject type (what object type does the LU deal with)
 372 HTYPE_CLUSTER = "CLUSTER"
 373 HTYPE_NODE = "NODE"
 374 HTYPE_GROUP = "GROUP"
 375 HTYPE_INSTANCE = "INSTANCE"
 376
 377 HKR_SKIP = 0
 378 HKR_FAIL = 1
 379 HKR_SUCCESS = 2
 380
 381 # Storage types
 382 ST_FILE = "file"
 383 ST_LVM_PV = "lvm-pv"
 384 ST_LVM_VG = "lvm-vg"
 385
 386 # Storage fields
 387 # first two are valid in LU context only, not passed to backend
 388 SF_NODE = "node"
 389 SF_TYPE = "type"
 390 # and the rest are valid in backend
 391 SF_NAME = "name"
 392 SF_SIZE = "size"
 393 SF_FREE = "free"
 394 SF_USED = "used"
 395 SF_ALLOCATABLE = "allocatable"
 396
 397 # Storage operations
 398 SO_FIX_CONSISTENCY = "fix-consistency"
 399
 400 # Available fields per storage type
 401 VALID_STORAGE_FIELDS = frozenset([
 402   SF_NAME,
 403   SF_TYPE,
 404   SF_SIZE,
 405   SF_USED,
 406   SF_FREE,
 407   SF_ALLOCATABLE
 408   ])
 409
 410 VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
 411
 412 MODIFIABLE_STORAGE_FIELDS = {
 413   ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
 414   }
 415
 416 VALID_STORAGE_OPERATIONS = {
 417   ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
 418   }
 419
 420 # Local disk status
 421 # Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
 422 (LDS_OKAY,
 423  LDS_UNKNOWN,
 424  LDS_FAULTY) = range(1, 4)
 425
 426 # disk template types
 427 DT_DISKLESS = "diskless"
 428 DT_PLAIN = "plain"
 429 DT_DRBD8 = "drbd"
 430 DT_FILE = "file"
 431 DT_SHARED_FILE = "sharedfile"
 432 DT_BLOCK = "blockdev"
 433 DT_RBD = "rbd"
 434
 435 # the set of network-mirrored disk templates
 436 DTS_INT_MIRROR = frozenset([DT_DRBD8])
 437
 438 # the set of externally-mirrored disk templates (e.g. SAN, NAS)
 439 DTS_EXT_MIRROR = frozenset([DT_SHARED_FILE, DT_BLOCK, DT_RBD])
 440
 441 # the set of non-lvm-based disk templates
 442 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE, DT_SHARED_FILE,
 443                          DT_BLOCK, DT_RBD])
 444
 445 # the set of disk templates which can be grown
 446 DTS_GROWABLE = frozenset([DT_PLAIN, DT_DRBD8, DT_FILE, DT_SHARED_FILE, DT_RBD])
 447
 448 # the set of disk templates that allow adoption
 449 DTS_MAY_ADOPT = frozenset([DT_PLAIN, DT_BLOCK])
 450
 451 # the set of disk templates that *must* use adoption
 452 DTS_MUST_ADOPT = frozenset([DT_BLOCK])
 453
 454 # the set of disk templates that allow migrations
 455 DTS_MIRRORED = frozenset.union(DTS_INT_MIRROR, DTS_EXT_MIRROR)
 456
 457 # the set of file based disk templates
 458 DTS_FILEBASED = frozenset([DT_FILE, DT_SHARED_FILE])
 459
 460 # logical disk types
 461 LD_LV = "lvm"
 462 LD_DRBD8 = "drbd8"
 463 LD_FILE = "file"
 464 LD_BLOCKDEV = "blockdev"
 465 LD_RBD = "rbd"
 466 LOGICAL_DISK_TYPES = frozenset([
 467   LD_LV,
 468   LD_DRBD8,
 469   LD_FILE,
 470   LD_BLOCKDEV,
 471   LD_RBD,
 472   ])
 473
 474 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8, LD_BLOCKDEV, LD_RBD])
 475
 476 # drbd constants
 477 DRBD_HMAC_ALG = "md5"
 478 DRBD_NET_PROTOCOL = "C"
 479
 480 # drbd barrier types
 481 DRBD_B_NONE = "n"
 482 DRBD_B_DISK_BARRIERS = "b"
 483 DRBD_B_DISK_DRAIN = "d"
 484 DRBD_B_DISK_FLUSH = "f"
 485
 486 # Valid barrier combinations: "n" or any non-null subset of "bfd"
 487 DRBD_VALID_BARRIER_OPT = frozenset([
 488   frozenset([DRBD_B_NONE]),
 489   frozenset([DRBD_B_DISK_BARRIERS]),
 490   frozenset([DRBD_B_DISK_DRAIN]),
 491   frozenset([DRBD_B_DISK_FLUSH]),
 492   frozenset([DRBD_B_DISK_DRAIN, DRBD_B_DISK_FLUSH]),
 493   frozenset([DRBD_B_DISK_DRAIN, DRBD_B_DISK_FLUSH]),
 494   frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_DRAIN]),
 495   frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_FLUSH]),
 496   frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_FLUSH, DRBD_B_DISK_DRAIN]),
 497   ])
 498
 499 # rbd tool command
 500 RBD_CMD = "rbd"
 501
 502 # file backend driver
 503 FD_LOOP = "loop"
 504 FD_BLKTAP = "blktap"
 505
 506 # the set of drbd-like disk types
 507 LDS_DRBD = frozenset([LD_DRBD8])
 508
 509 # disk access mode
 510 DISK_RDONLY = "ro"
 511 DISK_RDWR = "rw"
 512 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
 513
 514 # disk replacement mode
 515 REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
 516 REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
 517 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
 518 REPLACE_DISK_AUTO = "replace_auto"
 519 REPLACE_MODES = frozenset([
 520   REPLACE_DISK_PRI,
 521   REPLACE_DISK_SEC,
 522   REPLACE_DISK_CHG,
 523   REPLACE_DISK_AUTO,
 524   ])
 525
 526 # Instance export mode
 527 EXPORT_MODE_LOCAL = "local"
 528 EXPORT_MODE_REMOTE = "remote"
 529 EXPORT_MODES = frozenset([
 530   EXPORT_MODE_LOCAL,
 531   EXPORT_MODE_REMOTE,
 532   ])
 533
 534 # Lock recalculate mode
 535 LOCKS_REPLACE = "replace"
 536 LOCKS_APPEND = "append"
 537
 538 # Lock timeout (sum) before we should go into blocking acquire (still
 539 # can be reset by priority change); computed as max time (10 hours)
 540 # before we should actually go into blocking acquire given that we
 541 # start from default priority level; in seconds
 542 LOCK_ATTEMPTS_TIMEOUT = 10 * 3600 / 20.0
 543 LOCK_ATTEMPTS_MAXWAIT = 15.0
 544 LOCK_ATTEMPTS_MINWAIT = 1.0
 545
 546 # instance creation modes
 547 INSTANCE_CREATE = "create"
 548 INSTANCE_IMPORT = "import"
 549 INSTANCE_REMOTE_IMPORT = "remote-import"
 550 INSTANCE_CREATE_MODES = frozenset([
 551   INSTANCE_CREATE,
 552   INSTANCE_IMPORT,
 553   INSTANCE_REMOTE_IMPORT,
 554   ])
 555
 556 # Remote import/export handshake message and version
 557 RIE_VERSION = 0
 558 RIE_HANDSHAKE = "Hi, I'm Ganeti"
 559
 560 # Remote import/export certificate validity in seconds
 561 RIE_CERT_VALIDITY = 24 * 60 * 60
 562
 563 # Overall timeout for establishing connection
 564 RIE_CONNECT_TIMEOUT = 180
 565
 566 # Export only: how long to wait per connection attempt (seconds)
 567 RIE_CONNECT_ATTEMPT_TIMEOUT = 20
 568
 569 # Export only: number of attempts to connect
 570 RIE_CONNECT_RETRIES = 10
 571
 572 #: Give child process up to 5 seconds to exit after sending a signal
 573 CHILD_LINGER_TIMEOUT = 5.0
 574
 575 DISK_TEMPLATES = frozenset([
 576   DT_DISKLESS,
 577   DT_PLAIN,
 578   DT_DRBD8,
 579   DT_FILE,
 580   DT_SHARED_FILE,
 581   DT_BLOCK,
 582   DT_RBD
 583   ])
 584
 585 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
 586
 587 # import/export config options
 588 INISECT_EXP = "export"
 589 INISECT_INS = "instance"
 590 INISECT_HYP = "hypervisor"
 591 INISECT_BEP = "backend"
 592 INISECT_OSP = "os"
 593
 594 # dynamic device modification
 595 DDM_ADD = "add"
 596 DDM_REMOVE = "remove"
 597 DDMS_VALUES = frozenset([DDM_ADD, DDM_REMOVE])
 598
 599 # common exit codes
 600 EXIT_SUCCESS = 0
 601 EXIT_FAILURE = 1
 602 EXIT_NOTCLUSTER = 5
 603 EXIT_NOTMASTER = 11
 604 EXIT_NODESETUP_ERROR = 12
 605 EXIT_CONFIRMATION = 13 # need user confirmation
 606
 607 #: Exit code for query operations with unknown fields
 608 EXIT_UNKNOWN_FIELD = 14
 609
 610 # tags
 611 TAG_CLUSTER = "cluster"
 612 TAG_NODEGROUP = "nodegroup"
 613 TAG_NODE = "node"
 614 TAG_INSTANCE = "instance"
 615 VALID_TAG_TYPES = frozenset([
 616   TAG_CLUSTER,
 617   TAG_NODEGROUP,
 618   TAG_NODE,
 619   TAG_INSTANCE,
 620   ])
 621 MAX_TAG_LEN = 128
 622 MAX_TAGS_PER_OBJ = 4096
 623
 624 # others
 625 DEFAULT_BRIDGE = "xen-br0"
 626 CLASSIC_DRBD_SYNC_SPEED = 60 * 1024  # 60 MiB, expressed in KiB
 627 IP4_ADDRESS_LOCALHOST = "127.0.0.1"
 628 IP4_ADDRESS_ANY = "0.0.0.0"
 629 IP6_ADDRESS_LOCALHOST = "::1"
 630 IP6_ADDRESS_ANY = "::"
 631 IP4_VERSION = 4
 632 IP6_VERSION = 6
 633 VALID_IP_VERSIONS = frozenset([IP4_VERSION, IP6_VERSION])
 634 TCP_PING_TIMEOUT = 10
 635 GANETI_RUNAS = "root"
 636 DEFAULT_VG = "xenvg"
 637 DEFAULT_DRBD_HELPER = "/bin/true"
 638 MIN_VG_SIZE = 20480
 639 DEFAULT_MAC_PREFIX = "aa:00:00"
 640 # default maximum instance wait time, in seconds.
 641 DEFAULT_SHUTDOWN_TIMEOUT = 120
 642 NODE_MAX_CLOCK_SKEW = 150
 643 # Time for an intra-cluster disk transfer to wait for a connection
 644 DISK_TRANSFER_CONNECT_TIMEOUT = 60
 645 # Disk index separator
 646 DISK_SEPARATOR = _autoconf.DISK_SEPARATOR
 647 IP_COMMAND_PATH = _autoconf.IP_PATH
 648
 649 #: Key for job IDs in opcode result
 650 JOB_IDS_KEY = "jobs"
 651
 652 # runparts results
 653 (RUNPARTS_SKIP,
 654  RUNPARTS_RUN,
 655  RUNPARTS_ERR) = range(3)
 656
 657 RUNPARTS_STATUS = frozenset([RUNPARTS_SKIP, RUNPARTS_RUN, RUNPARTS_ERR])
 658
 659 # RPC constants
 660 (RPC_ENCODING_NONE,
 661  RPC_ENCODING_ZLIB_BASE64) = range(2)
 662
 663 # os related constants
 664 OS_SCRIPT_CREATE = "create"
 665 OS_SCRIPT_IMPORT = "import"
 666 OS_SCRIPT_EXPORT = "export"
 667 OS_SCRIPT_RENAME = "rename"
 668 OS_SCRIPT_VERIFY = "verify"
 669 OS_SCRIPTS = frozenset([
 670   OS_SCRIPT_CREATE,
 671   OS_SCRIPT_IMPORT,
 672   OS_SCRIPT_EXPORT,
 673   OS_SCRIPT_RENAME,
 674   OS_SCRIPT_VERIFY
 675   ])
 676
 677 OS_API_FILE = "ganeti_api_version"
 678 OS_VARIANTS_FILE = "variants.list"
 679 OS_PARAMETERS_FILE = "parameters.list"
 680
 681 OS_VALIDATE_PARAMETERS = "parameters"
 682 OS_VALIDATE_CALLS = frozenset([OS_VALIDATE_PARAMETERS])
 683
 684 # ssh constants
 685 SSH_CONFIG_DIR = _autoconf.SSH_CONFIG_DIR
 686 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_dsa_key"
 687 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
 688 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_rsa_key"
 689 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
 690 SSH = "ssh"
 691 SCP = "scp"
 692
 693 # reboot types
 694 INSTANCE_REBOOT_SOFT = "soft"
 695 INSTANCE_REBOOT_HARD = "hard"
 696 INSTANCE_REBOOT_FULL = "full"
 697
 698 REBOOT_TYPES = frozenset([
 699   INSTANCE_REBOOT_SOFT,
 700   INSTANCE_REBOOT_HARD,
 701   INSTANCE_REBOOT_FULL
 702   ])
 703
 704 # instance reboot behaviors
 705 INSTANCE_REBOOT_ALLOWED = "reboot"
 706 INSTANCE_REBOOT_EXIT = "exit"
 707
 708 REBOOT_BEHAVIORS = frozenset([
 709   INSTANCE_REBOOT_ALLOWED,
 710   INSTANCE_REBOOT_EXIT
 711   ])
 712
 713 VTYPE_STRING = "string"
 714 VTYPE_MAYBE_STRING = "maybe-string"
 715 VTYPE_BOOL = "bool"
 716 VTYPE_SIZE = "size" # size, in MiBs
 717 VTYPE_INT = "int"
 718 ENFORCEABLE_TYPES = frozenset([
 719   VTYPE_STRING,
 720   VTYPE_MAYBE_STRING,
 721   VTYPE_BOOL,
 722   VTYPE_SIZE,
 723   VTYPE_INT,
 724   ])
 725
 726 # Constant representing that the user does not specify any IP version
 727 IFACE_NO_IP_VERSION_SPECIFIED = 0
 728
 729 # HV parameter names (global namespace)
 730 HV_BOOT_ORDER = "boot_order"
 731 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
 732 HV_KVM_CDROM2_IMAGE_PATH = "cdrom2_image_path"
 733 HV_KVM_FLOPPY_IMAGE_PATH = "floppy_image_path"
 734 HV_NIC_TYPE = "nic_type"
 735 HV_DISK_TYPE = "disk_type"
 736 HV_KVM_CDROM_DISK_TYPE = "cdrom_disk_type"
 737 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
 738 HV_VNC_PASSWORD_FILE = "vnc_password_file"
 739 HV_VNC_TLS = "vnc_tls"
 740 HV_VNC_X509 = "vnc_x509_path"
 741 HV_VNC_X509_VERIFY = "vnc_x509_verify"
 742 HV_KVM_SPICE_BIND = "spice_bind"
 743 HV_KVM_SPICE_IP_VERSION = "spice_ip_version"
 744 HV_KVM_SPICE_PASSWORD_FILE = "spice_password_file"
 745 HV_KVM_SPICE_LOSSLESS_IMG_COMPR = "spice_image_compression"
 746 HV_KVM_SPICE_JPEG_IMG_COMPR = "spice_jpeg_wan_compression"
 747 HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR = "spice_zlib_glz_wan_compression"
 748 HV_KVM_SPICE_STREAMING_VIDEO_DETECTION = "spice_streaming_video"
 749 HV_KVM_SPICE_AUDIO_COMPR = "spice_playback_compression"
 750 HV_KVM_SPICE_USE_TLS = "spice_use_tls"
 751 HV_KVM_SPICE_TLS_CIPHERS = "spice_tls_ciphers"
 752 HV_KVM_SPICE_USE_VDAGENT = "spice_use_vdagent"
 753 HV_ACPI = "acpi"
 754 HV_PAE = "pae"
 755 HV_USE_BOOTLOADER = "use_bootloader"
 756 HV_BOOTLOADER_ARGS = "bootloader_args"
 757 HV_BOOTLOADER_PATH = "bootloader_path"
 758 HV_KERNEL_ARGS = "kernel_args"
 759 HV_KERNEL_PATH = "kernel_path"
 760 HV_INITRD_PATH = "initrd_path"
 761 HV_ROOT_PATH = "root_path"
 762 HV_SERIAL_CONSOLE = "serial_console"
 763 HV_USB_MOUSE = "usb_mouse"
 764 HV_KEYMAP = "keymap"
 765 HV_DEVICE_MODEL = "device_model"
 766 HV_INIT_SCRIPT = "init_script"
 767 HV_MIGRATION_PORT = "migration_port"
 768 HV_MIGRATION_BANDWIDTH = "migration_bandwidth"
 769 HV_MIGRATION_DOWNTIME = "migration_downtime"
 770 HV_MIGRATION_MODE = "migration_mode"
 771 HV_USE_LOCALTIME = "use_localtime"
 772 HV_DISK_CACHE = "disk_cache"
 773 HV_SECURITY_MODEL = "security_model"
 774 HV_SECURITY_DOMAIN = "security_domain"
 775 HV_KVM_FLAG = "kvm_flag"
 776 HV_VHOST_NET = "vhost_net"
 777 HV_KVM_USE_CHROOT = "use_chroot"
 778 HV_CPU_MASK = "cpu_mask"
 779 HV_MEM_PATH = "mem_path"
 780 HV_BLOCKDEV_PREFIX = "blockdev_prefix"
 781 HV_REBOOT_BEHAVIOR = "reboot_behavior"
 782
 783 HVS_PARAMETER_TYPES = {
 784   HV_BOOT_ORDER: VTYPE_STRING,
 785   HV_KVM_FLOPPY_IMAGE_PATH: VTYPE_STRING,
 786   HV_CDROM_IMAGE_PATH: VTYPE_STRING,
 787   HV_KVM_CDROM2_IMAGE_PATH: VTYPE_STRING,
 788   HV_NIC_TYPE: VTYPE_STRING,
 789   HV_DISK_TYPE: VTYPE_STRING,
 790   HV_KVM_CDROM_DISK_TYPE: VTYPE_STRING,
 791   HV_VNC_PASSWORD_FILE: VTYPE_STRING,
 792   HV_VNC_BIND_ADDRESS: VTYPE_STRING,
 793   HV_VNC_TLS: VTYPE_BOOL,
 794   HV_VNC_X509: VTYPE_STRING,
 795   HV_VNC_X509_VERIFY: VTYPE_BOOL,
 796   HV_KVM_SPICE_BIND: VTYPE_STRING,
 797   HV_KVM_SPICE_IP_VERSION: VTYPE_INT,
 798   HV_KVM_SPICE_PASSWORD_FILE: VTYPE_STRING,
 799   HV_KVM_SPICE_LOSSLESS_IMG_COMPR: VTYPE_STRING,
 800   HV_KVM_SPICE_JPEG_IMG_COMPR: VTYPE_STRING,
 801   HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: VTYPE_STRING,
 802   HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: VTYPE_STRING,
 803   HV_KVM_SPICE_AUDIO_COMPR: VTYPE_BOOL,
 804   HV_KVM_SPICE_USE_TLS: VTYPE_BOOL,
 805   HV_KVM_SPICE_TLS_CIPHERS: VTYPE_STRING,
 806   HV_KVM_SPICE_USE_VDAGENT: VTYPE_BOOL,
 807   HV_ACPI: VTYPE_BOOL,
 808   HV_PAE: VTYPE_BOOL,
 809   HV_USE_BOOTLOADER: VTYPE_BOOL,
 810   HV_BOOTLOADER_PATH: VTYPE_STRING,
 811   HV_BOOTLOADER_ARGS: VTYPE_STRING,
 812   HV_KERNEL_PATH: VTYPE_STRING,
 813   HV_KERNEL_ARGS: VTYPE_STRING,
 814   HV_INITRD_PATH: VTYPE_STRING,
 815   HV_ROOT_PATH: VTYPE_MAYBE_STRING,
 816   HV_SERIAL_CONSOLE: VTYPE_BOOL,
 817   HV_USB_MOUSE: VTYPE_STRING,
 818   HV_KEYMAP: VTYPE_STRING,
 819   HV_DEVICE_MODEL: VTYPE_STRING,
 820   HV_INIT_SCRIPT: VTYPE_STRING,
 821   HV_MIGRATION_PORT: VTYPE_INT,
 822   HV_MIGRATION_BANDWIDTH: VTYPE_INT,
 823   HV_MIGRATION_DOWNTIME: VTYPE_INT,
 824   HV_MIGRATION_MODE: VTYPE_STRING,
 825   HV_USE_LOCALTIME: VTYPE_BOOL,
 826   HV_DISK_CACHE: VTYPE_STRING,
 827   HV_SECURITY_MODEL: VTYPE_STRING,
 828   HV_SECURITY_DOMAIN: VTYPE_STRING,
 829   HV_KVM_FLAG: VTYPE_STRING,
 830   HV_VHOST_NET: VTYPE_BOOL,
 831   HV_KVM_USE_CHROOT: VTYPE_BOOL,
 832   HV_CPU_MASK: VTYPE_STRING,
 833   HV_MEM_PATH: VTYPE_STRING,
 834   HV_BLOCKDEV_PREFIX: VTYPE_STRING,
 835   HV_REBOOT_BEHAVIOR: VTYPE_STRING,
 836   }
 837
 838 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
 839
 840 # Migration statuses
 841 HV_MIGRATION_COMPLETED = "completed"
 842 HV_MIGRATION_ACTIVE = "active"
 843 HV_MIGRATION_FAILED = "failed"
 844 HV_MIGRATION_CANCELLED = "cancelled"
 845
 846 HV_MIGRATION_VALID_STATUSES = frozenset([
 847   HV_MIGRATION_COMPLETED,
 848   HV_MIGRATION_ACTIVE,
 849   HV_MIGRATION_FAILED,
 850   HV_MIGRATION_CANCELLED,
 851   ])
 852
 853 HV_MIGRATION_FAILED_STATUSES = frozenset([
 854   HV_MIGRATION_FAILED,
 855   HV_MIGRATION_CANCELLED,
 856   ])
 857
 858 # KVM-specific statuses
 859 HV_KVM_MIGRATION_VALID_STATUSES = HV_MIGRATION_VALID_STATUSES
 860
 861 # Node info keys
 862 HV_NODEINFO_KEY_VERSION = "hv_version"
 863
 864 # Hypervisor state
 865 HVST_MEMORY_TOTAL = "mem_total"
 866 HVST_MEMORY_NODE = "mem_node"
 867 HVST_MEMORY_HV = "mem_hv"
 868 HVST_CPU_TOTAL = "cpu_total"
 869 HVST_CPU_NODE = "cpu_node"
 870
 871 HVST_DEFAULTS = {
 872   HVST_MEMORY_TOTAL: 0,
 873   HVST_MEMORY_NODE: 0,
 874   HVST_MEMORY_HV: 0,
 875   HVST_CPU_TOTAL: 1,
 876   HVST_CPU_NODE: 1,
 877   }
 878
 879 HVSTS_PARAMETER_TYPES = {
 880   HVST_MEMORY_TOTAL: VTYPE_INT,
 881   HVST_MEMORY_NODE: VTYPE_INT,
 882   HVST_MEMORY_HV: VTYPE_INT,
 883   HVST_CPU_TOTAL: VTYPE_INT,
 884   HVST_CPU_NODE: VTYPE_INT,
 885   }
 886
 887 HVSTS_PARAMETERS = frozenset(HVSTS_PARAMETER_TYPES.keys())
 888
 889 # Disk state
 890 DS_DISK_TOTAL = "disk_total"
 891 DS_DISK_RESERVED = "disk_reserved"
 892 DS_DISK_OVERHEAD = "disk_overhead"
 893
 894 DS_DEFAULTS = {
 895   DS_DISK_TOTAL: 0,
 896   DS_DISK_RESERVED: 0,
 897   DS_DISK_OVERHEAD: 0,
 898   }
 899
 900 DSS_PARAMETER_TYPES = {
 901   DS_DISK_TOTAL: VTYPE_INT,
 902   DS_DISK_RESERVED: VTYPE_INT,
 903   DS_DISK_OVERHEAD: VTYPE_INT,
 904   }
 905
 906 DSS_PARAMETERS = frozenset(DSS_PARAMETER_TYPES.keys())
 907 DS_VALID_TYPES = frozenset([LD_LV])
 908
 909 # Backend parameter names
 910 BE_MEMORY = "memory" # deprecated and replaced by max and min mem
 911 BE_MAXMEM = "maxmem"
 912 BE_MINMEM = "minmem"
 913 BE_VCPUS = "vcpus"
 914 BE_AUTO_BALANCE = "auto_balance"
 915 BE_ALWAYS_FAILOVER = "always_failover"
 916
 917 BES_PARAMETER_TYPES = {
 918   BE_MAXMEM: VTYPE_SIZE,
 919   BE_MINMEM: VTYPE_SIZE,
 920   BE_VCPUS: VTYPE_INT,
 921   BE_AUTO_BALANCE: VTYPE_BOOL,
 922   BE_ALWAYS_FAILOVER: VTYPE_BOOL,
 923   }
 924
 925 BES_PARAMETER_COMPAT = {
 926   BE_MEMORY: VTYPE_SIZE,
 927   }
 928 BES_PARAMETER_COMPAT.update(BES_PARAMETER_TYPES)
 929
 930 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 931
 932 # instance specs
 933 ISPEC_MEM_SIZE = "memory-size"
 934 ISPEC_CPU_COUNT = "cpu-count"
 935 ISPEC_DISK_COUNT = "disk-count"
 936 ISPEC_DISK_SIZE = "disk-size"
 937 ISPEC_NIC_COUNT = "nic-count"
 938
 939 ISPECS_PARAMETER_TYPES = {
 940   ISPEC_MEM_SIZE: VTYPE_INT,
 941   ISPEC_CPU_COUNT: VTYPE_INT,
 942   ISPEC_DISK_COUNT: VTYPE_INT,
 943   ISPEC_DISK_SIZE: VTYPE_INT,
 944   ISPEC_NIC_COUNT: VTYPE_INT,
 945   }
 946
 947 ISPECS_PARAMETERS = frozenset(ISPECS_PARAMETER_TYPES.keys())
 948
 949 ISPECS_MIN = "min"
 950 ISPECS_MAX = "max"
 951 ISPECS_STD = "std"
 952 IPOLICY_DTS = "disk_templates"
 953
 954 IPOLICY_PARAMETERS = frozenset([
 955   ISPECS_MIN,
 956   ISPECS_MAX,
 957   ISPECS_STD,
 958   ])
 959 IPOLICY_ALL_KEYS = IPOLICY_PARAMETERS.union([IPOLICY_DTS])
 960
 961 # Node parameter names
 962 ND_OOB_PROGRAM = "oob_program"
 963
 964 NDS_PARAMETER_TYPES = {
 965   ND_OOB_PROGRAM: VTYPE_MAYBE_STRING,
 966   }
 967
 968 NDS_PARAMETERS = frozenset(NDS_PARAMETER_TYPES.keys())
 969
 970 # Logical Disks parameters
 971 LDP_RESYNC_RATE = "resync-rate"
 972 LDP_STRIPES = "stripes"
 973 LDP_BARRIERS = "disabled-barriers"
 974 LDP_NO_META_FLUSH = "disable-meta-flush"
 975 LDP_DEFAULT_METAVG = "default-metavg"
 976 LDP_DISK_CUSTOM = "disk-custom"
 977 LDP_NET_CUSTOM = "net-custom"
 978 LDP_DYNAMIC_RESYNC = "dynamic-resync"
 979 LDP_PLAN_AHEAD = "c-plan-ahead"
 980 LDP_FILL_TARGET = "c-fill-target"
 981 LDP_DELAY_TARGET = "c-delay-target"
 982 LDP_MAX_RATE = "c-max-rate"
 983 LDP_MIN_RATE = "c-min-rate"
 984 LDP_POOL = "pool"
 985 DISK_LD_TYPES = {
 986   LDP_RESYNC_RATE: VTYPE_INT,
 987   LDP_STRIPES: VTYPE_INT,
 988   LDP_BARRIERS: VTYPE_STRING,
 989   LDP_NO_META_FLUSH: VTYPE_BOOL,
 990   LDP_DEFAULT_METAVG: VTYPE_STRING,
 991   LDP_DISK_CUSTOM: VTYPE_STRING,
 992   LDP_NET_CUSTOM: VTYPE_STRING,
 993   LDP_DYNAMIC_RESYNC: VTYPE_BOOL,
 994   LDP_PLAN_AHEAD: VTYPE_INT,
 995   LDP_FILL_TARGET: VTYPE_INT,
 996   LDP_DELAY_TARGET: VTYPE_INT,
 997   LDP_MAX_RATE: VTYPE_INT,
 998   LDP_MIN_RATE: VTYPE_INT,
 999   LDP_POOL: VTYPE_STRING,
1000   }
1001 DISK_LD_PARAMETERS = frozenset(DISK_LD_TYPES.keys())
1002
1003 # Disk template parameters (can be set/changed by the user via gnt-cluster and
1004 # gnt-group)
1005 DRBD_RESYNC_RATE = "resync-rate"
1006 DRBD_DATA_STRIPES = "data-stripes"
1007 DRBD_META_STRIPES = "meta-stripes"
1008 DRBD_DISK_BARRIERS = "disk-barriers"
1009 DRBD_META_BARRIERS = "meta-barriers"
1010 DRBD_DEFAULT_METAVG = "metavg"
1011 DRBD_DISK_CUSTOM = "disk-custom"
1012 DRBD_NET_CUSTOM = "net-custom"
1013 DRBD_DYNAMIC_RESYNC = "dynamic-resync"
1014 DRBD_PLAN_AHEAD = "c-plan-ahead"
1015 DRBD_FILL_TARGET = "c-fill-target"
1016 DRBD_DELAY_TARGET = "c-delay-target"
1017 DRBD_MAX_RATE = "c-max-rate"
1018 DRBD_MIN_RATE = "c-min-rate"
1019 LV_STRIPES = "stripes"
1020 RBD_POOL = "pool"
1021 DISK_DT_TYPES = {
1022   DRBD_RESYNC_RATE: VTYPE_INT,
1023   DRBD_DATA_STRIPES: VTYPE_INT,
1024   DRBD_META_STRIPES: VTYPE_INT,
1025   DRBD_DISK_BARRIERS: VTYPE_STRING,
1026   DRBD_META_BARRIERS: VTYPE_BOOL,
1027   DRBD_DEFAULT_METAVG: VTYPE_STRING,
1028   DRBD_DISK_CUSTOM: VTYPE_STRING,
1029   DRBD_NET_CUSTOM: VTYPE_STRING,
1030   DRBD_DYNAMIC_RESYNC: VTYPE_BOOL,
1031   DRBD_PLAN_AHEAD: VTYPE_INT,
1032   DRBD_FILL_TARGET: VTYPE_INT,
1033   DRBD_DELAY_TARGET: VTYPE_INT,
1034   DRBD_MAX_RATE: VTYPE_INT,
1035   DRBD_MIN_RATE: VTYPE_INT,
1036   LV_STRIPES: VTYPE_INT,
1037   RBD_POOL: VTYPE_STRING,
1038   }
1039
1040 DISK_DT_PARAMETERS = frozenset(DISK_DT_TYPES.keys())
1041
1042 # OOB supported commands
1043 OOB_POWER_ON = "power-on"
1044 OOB_POWER_OFF = "power-off"
1045 OOB_POWER_CYCLE = "power-cycle"
1046 OOB_POWER_STATUS = "power-status"
1047 OOB_HEALTH = "health"
1048
1049 OOB_COMMANDS = frozenset([
1050   OOB_POWER_ON,
1051   OOB_POWER_OFF,
1052   OOB_POWER_CYCLE,
1053   OOB_POWER_STATUS,
1054   OOB_HEALTH
1055   ])
1056
1057 OOB_POWER_STATUS_POWERED = "powered"
1058
1059 OOB_TIMEOUT = 60 # 60 seconds
1060 OOB_POWER_DELAY = 2.0 # 2 seconds
1061
1062 OOB_STATUS_OK = "OK"
1063 OOB_STATUS_WARNING = "WARNING"
1064 OOB_STATUS_CRITICAL = "CRITICAL"
1065 OOB_STATUS_UNKNOWN = "UNKNOWN"
1066
1067 OOB_STATUSES = frozenset([
1068   OOB_STATUS_OK,
1069   OOB_STATUS_WARNING,
1070   OOB_STATUS_CRITICAL,
1071   OOB_STATUS_UNKNOWN,
1072   ])
1073
1074 # Instance Parameters Profile
1075 PP_DEFAULT = "default"
1076
1077 # NIC_* constants are used inside the ganeti config
1078 NIC_MODE = "mode"
1079 NIC_LINK = "link"
1080
1081 NIC_MODE_BRIDGED = "bridged"
1082 NIC_MODE_ROUTED = "routed"
1083
1084 NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])
1085
1086 NICS_PARAMETER_TYPES = {
1087   NIC_MODE: VTYPE_STRING,
1088   NIC_LINK: VTYPE_STRING,
1089   }
1090
1091 NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
1092
1093 # IDISK_* constants are used in opcodes, to create/change disks
1094 IDISK_SIZE = "size"
1095 IDISK_MODE = "mode"
1096 IDISK_ADOPT = "adopt"
1097 IDISK_VG = "vg"
1098 IDISK_METAVG = "metavg"
1099 IDISK_PARAMS_TYPES = {
1100   IDISK_SIZE: VTYPE_SIZE,
1101   IDISK_MODE: VTYPE_STRING,
1102   IDISK_ADOPT: VTYPE_STRING,
1103   IDISK_VG: VTYPE_STRING,
1104   IDISK_METAVG: VTYPE_STRING,
1105   }
1106 IDISK_PARAMS = frozenset(IDISK_PARAMS_TYPES.keys())
1107
1108 # INIC_* constants are used in opcodes, to create/change nics
1109 INIC_MAC = "mac"
1110 INIC_IP = "ip"
1111 INIC_MODE = "mode"
1112 INIC_LINK = "link"
1113 INIC_PARAMS_TYPES = {
1114   INIC_IP: VTYPE_MAYBE_STRING,
1115   INIC_LINK: VTYPE_STRING,
1116   INIC_MAC: VTYPE_STRING,
1117   INIC_MODE: VTYPE_STRING,
1118   }
1119 INIC_PARAMS = frozenset(INIC_PARAMS_TYPES.keys())
1120
1121 # Hypervisor constants
1122 HT_XEN_PVM = "xen-pvm"
1123 HT_FAKE = "fake"
1124 HT_XEN_HVM = "xen-hvm"
1125 HT_KVM = "kvm"
1126 HT_CHROOT = "chroot"
1127 HT_LXC = "lxc"
1128 HYPER_TYPES = frozenset([
1129   HT_XEN_PVM,
1130   HT_FAKE,
1131   HT_XEN_HVM,
1132   HT_KVM,
1133   HT_CHROOT,
1134   HT_LXC,
1135   ])
1136 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
1137
1138 VNC_BASE_PORT = 5900
1139 VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
1140 VNC_DEFAULT_BIND_ADDRESS = IP4_ADDRESS_ANY
1141
1142 # NIC types
1143 HT_NIC_RTL8139 = "rtl8139"
1144 HT_NIC_NE2K_PCI = "ne2k_pci"
1145 HT_NIC_NE2K_ISA = "ne2k_isa"
1146 HT_NIC_I82551 = "i82551"
1147 HT_NIC_I85557B = "i82557b"
1148 HT_NIC_I8259ER = "i82559er"
1149 HT_NIC_PCNET = "pcnet"
1150 HT_NIC_E1000 = "e1000"
1151 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
1152
1153 HT_HVM_VALID_NIC_TYPES = frozenset([
1154   HT_NIC_RTL8139,
1155   HT_NIC_NE2K_PCI,
1156   HT_NIC_E1000,
1157   HT_NIC_NE2K_ISA,
1158   HT_NIC_PARAVIRTUAL
1159   ])
1160 HT_KVM_VALID_NIC_TYPES = frozenset([
1161   HT_NIC_RTL8139,
1162   HT_NIC_NE2K_PCI,
1163   HT_NIC_NE2K_ISA,
1164   HT_NIC_I82551,
1165   HT_NIC_I85557B,
1166   HT_NIC_I8259ER,
1167   HT_NIC_PCNET,
1168   HT_NIC_E1000,
1169   HT_NIC_PARAVIRTUAL
1170   ])
1171
1172 # Disk types
1173 HT_DISK_IOEMU = "ioemu"
1174 HT_DISK_IDE = "ide"
1175 HT_DISK_SCSI = "scsi"
1176 HT_DISK_SD = "sd"
1177 HT_DISK_MTD = "mtd"
1178 HT_DISK_PFLASH = "pflash"
1179
1180 HT_CACHE_DEFAULT = "default"
1181 HT_CACHE_NONE = "none"
1182 HT_CACHE_WTHROUGH = "writethrough"
1183 HT_CACHE_WBACK = "writeback"
1184 HT_VALID_CACHE_TYPES = frozenset([
1185   HT_CACHE_DEFAULT,
1186   HT_CACHE_NONE,
1187   HT_CACHE_WTHROUGH,
1188   HT_CACHE_WBACK
1189   ])
1190
1191 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
1192 HT_KVM_VALID_DISK_TYPES = frozenset([
1193   HT_DISK_PARAVIRTUAL,
1194   HT_DISK_IDE,
1195   HT_DISK_SCSI,
1196   HT_DISK_SD,
1197   HT_DISK_MTD,
1198   HT_DISK_PFLASH
1199   ])
1200
1201 # Mouse types:
1202 HT_MOUSE_MOUSE = "mouse"
1203 HT_MOUSE_TABLET = "tablet"
1204
1205 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
1206
1207 # Boot order
1208 HT_BO_FLOPPY = "floppy"
1209 HT_BO_CDROM = "cdrom"
1210 HT_BO_DISK = "disk"
1211 HT_BO_NETWORK = "network"
1212
1213 HT_KVM_VALID_BO_TYPES = frozenset([
1214   HT_BO_FLOPPY,
1215   HT_BO_CDROM,
1216   HT_BO_DISK,
1217   HT_BO_NETWORK
1218   ])
1219
1220 # SPICE lossless image compression options
1221 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_GLZ = "auto_glz"
1222 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_LZ = "auto_lz"
1223 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_QUIC = "quic"
1224 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_GLZ = "glz"
1225 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_LZ = "lz"
1226 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_OFF = "off"
1227
1228 HT_KVM_SPICE_VALID_LOSSLESS_IMG_COMPR_OPTIONS = frozenset([
1229   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_GLZ,
1230   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_LZ,
1231   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_QUIC,
1232   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_GLZ,
1233   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_LZ,
1234   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_OFF,
1235   ])
1236
1237 # SPICE lossy image compression options (valid for both jpeg and zlib-glz)
1238 HT_KVM_SPICE_LOSSY_IMG_COMPR_AUTO = "auto"
1239 HT_KVM_SPICE_LOSSY_IMG_COMPR_NEVER = "never"
1240 HT_KVM_SPICE_LOSSY_IMG_COMPR_ALWAYS = "always"
1241
1242 HT_KVM_SPICE_VALID_LOSSY_IMG_COMPR_OPTIONS = frozenset([
1243   HT_KVM_SPICE_LOSSY_IMG_COMPR_AUTO,
1244   HT_KVM_SPICE_LOSSY_IMG_COMPR_NEVER,
1245   HT_KVM_SPICE_LOSSY_IMG_COMPR_ALWAYS,
1246   ])
1247
1248 # SPICE video stream detection
1249 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_OFF = "off"
1250 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_ALL = "all"
1251 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_FILTER = "filter"
1252
1253 HT_KVM_SPICE_VALID_VIDEO_STREAM_DETECTION_OPTIONS = frozenset([
1254   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_OFF,
1255   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_ALL,
1256   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_FILTER,
1257   ])
1258
1259 # Security models
1260 HT_SM_NONE = "none"
1261 HT_SM_USER = "user"
1262 HT_SM_POOL = "pool"
1263
1264 HT_KVM_VALID_SM_TYPES = frozenset([HT_SM_NONE, HT_SM_USER, HT_SM_POOL])
1265
1266 # Kvm flag values
1267 HT_KVM_ENABLED = "enabled"
1268 HT_KVM_DISABLED = "disabled"
1269
1270 HT_KVM_FLAG_VALUES = frozenset([HT_KVM_ENABLED, HT_KVM_DISABLED])
1271
1272 # Migration type
1273 HT_MIGRATION_LIVE = "live"
1274 HT_MIGRATION_NONLIVE = "non-live"
1275 HT_MIGRATION_MODES = frozenset([HT_MIGRATION_LIVE, HT_MIGRATION_NONLIVE])
1276
1277 # Cluster Verify steps
1278 VERIFY_NPLUSONE_MEM = "nplusone_mem"
1279 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
1280
1281 # Cluster Verify error classes
1282 CV_TCLUSTER = "cluster"
1283 CV_TNODE = "node"
1284 CV_TINSTANCE = "instance"
1285
1286 # Cluster Verify error codes and documentation
1287 CV_ECLUSTERCFG = \
1288   (CV_TCLUSTER, "ECLUSTERCFG", "Cluster configuration verification failure")
1289 CV_ECLUSTERCERT = \
1290   (CV_TCLUSTER, "ECLUSTERCERT",
1291    "Cluster certificate files verification failure")
1292 CV_ECLUSTERFILECHECK = \
1293   (CV_TCLUSTER, "ECLUSTERFILECHECK",
1294    "Cluster configuration verification failure")
1295 CV_ECLUSTERDANGLINGNODES = \
1296   (CV_TNODE, "ECLUSTERDANGLINGNODES",
1297    "Some nodes belong to non-existing groups")
1298 CV_ECLUSTERDANGLINGINST = \
1299   (CV_TNODE, "ECLUSTERDANGLINGINST",
1300    "Some instances have a non-existing primary node")
1301 CV_EINSTANCEBADNODE = \
1302   (CV_TINSTANCE, "EINSTANCEBADNODE",
1303    "Instance marked as running lives on an offline node")
1304 CV_EINSTANCEDOWN = \
1305   (CV_TINSTANCE, "EINSTANCEDOWN", "Instance not running on its primary node")
1306 CV_EINSTANCELAYOUT = \
1307   (CV_TINSTANCE, "EINSTANCELAYOUT", "Instance has multiple secondary nodes")
1308 CV_EINSTANCEMISSINGDISK = \
1309   (CV_TINSTANCE, "EINSTANCEMISSINGDISK", "Missing volume on an instance")
1310 CV_EINSTANCEFAULTYDISK = \
1311   (CV_TINSTANCE, "EINSTANCEFAULTYDISK",
1312    "Impossible to retrieve status for a disk")
1313 CV_EINSTANCEWRONGNODE = \
1314   (CV_TINSTANCE, "EINSTANCEWRONGNODE", "Instance running on the wrong node")
1315 CV_EINSTANCESPLITGROUPS = \
1316   (CV_TINSTANCE, "EINSTANCESPLITGROUPS",
1317    "Instance with primary and secondary nodes in different groups")
1318 CV_EINSTANCEPOLICY = \
1319   (CV_TINSTANCE, "EINSTANCEPOLICY",
1320    "Instance does not meet policy")
1321 CV_ENODEDRBD = \
1322   (CV_TNODE, "ENODEDRBD", "Error parsing the DRBD status file")
1323 CV_ENODEDRBDHELPER = \
1324   (CV_TNODE, "ENODEDRBDHELPER", "Error caused by the DRBD helper")
1325 CV_ENODEFILECHECK = \
1326   (CV_TNODE, "ENODEFILECHECK",
1327    "Error retrieving the checksum of the node files")
1328 CV_ENODEHOOKS = \
1329   (CV_TNODE, "ENODEHOOKS", "Communication failure in hooks execution")
1330 CV_ENODEHV = \
1331   (CV_TNODE, "ENODEHV", "Hypervisor parameters verification failure")
1332 CV_ENODELVM = \
1333   (CV_TNODE, "ENODELVM", "LVM-related node error")
1334 CV_ENODEN1 = \
1335   (CV_TNODE, "ENODEN1", "Not enough memory to accommodate instance failovers")
1336 CV_ENODENET = \
1337   (CV_TNODE, "ENODENET", "Network-related node error")
1338 CV_ENODEOS = \
1339   (CV_TNODE, "ENODEOS", "OS-related node error")
1340 CV_ENODEORPHANINSTANCE = \
1341   (CV_TNODE, "ENODEORPHANINSTANCE", "Unknown intance running on a node")
1342 CV_ENODEORPHANLV = \
1343   (CV_TNODE, "ENODEORPHANLV", "Unknown LVM logical volume")
1344 CV_ENODERPC = \
1345   (CV_TNODE, "ENODERPC",
1346    "Error during connection to the primary node of an instance")
1347 CV_ENODESSH = \
1348   (CV_TNODE, "ENODESSH", "SSH-related node error")
1349 CV_ENODEVERSION = \
1350   (CV_TNODE, "ENODEVERSION",
1351    "Protocol version mismatch or Ganeti version mismatch")
1352 CV_ENODESETUP = \
1353   (CV_TNODE, "ENODESETUP", "Node setup error")
1354 CV_ENODETIME = \
1355   (CV_TNODE, "ENODETIME", "Node returned invalid time")
1356 CV_ENODEOOBPATH = \
1357   (CV_TNODE, "ENODEOOBPATH", "Invalid Out Of Band path")
1358 CV_ENODEUSERSCRIPTS = \
1359   (CV_TNODE, "ENODEUSERSCRIPTS", "User scripts not present or not executable")
1360
1361 CV_ALL_ECODES = frozenset([
1362   CV_ECLUSTERCFG,
1363   CV_ECLUSTERCERT,
1364   CV_ECLUSTERFILECHECK,
1365   CV_ECLUSTERDANGLINGNODES,
1366   CV_ECLUSTERDANGLINGINST,
1367   CV_EINSTANCEBADNODE,
1368   CV_EINSTANCEDOWN,
1369   CV_EINSTANCELAYOUT,
1370   CV_EINSTANCEMISSINGDISK,
1371   CV_EINSTANCEFAULTYDISK,
1372   CV_EINSTANCEWRONGNODE,
1373   CV_EINSTANCESPLITGROUPS,
1374   CV_EINSTANCEPOLICY,
1375   CV_ENODEDRBD,
1376   CV_ENODEDRBDHELPER,
1377   CV_ENODEFILECHECK,
1378   CV_ENODEHOOKS,
1379   CV_ENODEHV,
1380   CV_ENODELVM,
1381   CV_ENODEN1,
1382   CV_ENODENET,
1383   CV_ENODEOS,
1384   CV_ENODEORPHANINSTANCE,
1385   CV_ENODEORPHANLV,
1386   CV_ENODERPC,
1387   CV_ENODESSH,
1388   CV_ENODEVERSION,
1389   CV_ENODESETUP,
1390   CV_ENODETIME,
1391   CV_ENODEOOBPATH,
1392   CV_ENODEUSERSCRIPTS,
1393   ])
1394
1395 CV_ALL_ECODES_STRINGS = frozenset(estr for (_, estr, _) in CV_ALL_ECODES)
1396
1397 # Node verify constants
1398 NV_DRBDHELPER = "drbd-helper"
1399 NV_DRBDLIST = "drbd-list"
1400 NV_FILELIST = "filelist"
1401 NV_HVINFO = "hvinfo"
1402 NV_HYPERVISOR = "hypervisor"
1403 NV_HVPARAMS = "hvparms"
1404 NV_INSTANCELIST = "instancelist"
1405 NV_LVLIST = "lvlist"
1406 NV_MASTERIP = "master-ip"
1407 NV_NODELIST = "nodelist"
1408 NV_NODENETTEST = "node-net-test"
1409 NV_NODESETUP = "nodesetup"
1410 NV_OSLIST = "oslist"
1411 NV_PVLIST = "pvlist"
1412 NV_TIME = "time"
1413 NV_VERSION = "version"
1414 NV_VGLIST = "vglist"
1415 NV_VMNODES = "vmnodes"
1416 NV_OOB_PATHS = "oob-paths"
1417 NV_BRIDGES = "bridges"
1418 NV_USERSCRIPTS = "user-scripts"
1419
1420 # Instance status
1421 INSTST_RUNNING = "running"
1422 INSTST_ADMINDOWN = "ADMIN_down"
1423 INSTST_ADMINOFFLINE = "ADMIN_offline"
1424 INSTST_NODEOFFLINE = "ERROR_nodeoffline"
1425 INSTST_NODEDOWN = "ERROR_nodedown"
1426 INSTST_WRONGNODE = "ERROR_wrongnode"
1427 INSTST_ERRORUP = "ERROR_up"
1428 INSTST_ERRORDOWN = "ERROR_down"
1429 INSTST_ALL = frozenset([
1430   INSTST_RUNNING,
1431   INSTST_ADMINDOWN,
1432   INSTST_ADMINOFFLINE,
1433   INSTST_NODEOFFLINE,
1434   INSTST_NODEDOWN,
1435   INSTST_WRONGNODE,
1436   INSTST_ERRORUP,
1437   INSTST_ERRORDOWN,
1438   ])
1439
1440 # Admin states
1441 ADMINST_UP = "up"
1442 ADMINST_DOWN = "down"
1443 ADMINST_OFFLINE = "offline"
1444 ADMINST_ALL = frozenset([
1445   ADMINST_UP,
1446   ADMINST_DOWN,
1447   ADMINST_OFFLINE,
1448   ])
1449
1450 # Node roles
1451 NR_REGULAR = "R"
1452 NR_MASTER = "M"
1453 NR_MCANDIDATE = "C"
1454 NR_DRAINED = "D"
1455 NR_OFFLINE = "O"
1456 NR_ALL = frozenset([
1457   NR_REGULAR,
1458   NR_MASTER,
1459   NR_MCANDIDATE,
1460   NR_DRAINED,
1461   NR_OFFLINE,
1462   ])
1463
1464 # SSL certificate check constants (in days)
1465 SSL_CERT_EXPIRATION_WARN = 30
1466 SSL_CERT_EXPIRATION_ERROR = 7
1467
1468 # Allocator framework constants
1469 IALLOCATOR_VERSION = 2
1470 IALLOCATOR_DIR_IN = "in"
1471 IALLOCATOR_DIR_OUT = "out"
1472 VALID_IALLOCATOR_DIRECTIONS = frozenset([
1473   IALLOCATOR_DIR_IN,
1474   IALLOCATOR_DIR_OUT,
1475   ])
1476 IALLOCATOR_MODE_ALLOC = "allocate"
1477 IALLOCATOR_MODE_RELOC = "relocate"
1478 IALLOCATOR_MODE_CHG_GROUP = "change-group"
1479 IALLOCATOR_MODE_NODE_EVAC = "node-evacuate"
1480 VALID_IALLOCATOR_MODES = frozenset([
1481   IALLOCATOR_MODE_ALLOC,
1482   IALLOCATOR_MODE_RELOC,
1483   IALLOCATOR_MODE_CHG_GROUP,
1484   IALLOCATOR_MODE_NODE_EVAC,
1485   ])
1486 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
1487
1488 IALLOCATOR_NEVAC_PRI = "primary-only"
1489 IALLOCATOR_NEVAC_SEC = "secondary-only"
1490 IALLOCATOR_NEVAC_ALL = "all"
1491 IALLOCATOR_NEVAC_MODES = frozenset([
1492   IALLOCATOR_NEVAC_PRI,
1493   IALLOCATOR_NEVAC_SEC,
1494   IALLOCATOR_NEVAC_ALL,
1495   ])
1496
1497 # Node evacuation
1498 NODE_EVAC_PRI = "primary-only"
1499 NODE_EVAC_SEC = "secondary-only"
1500 NODE_EVAC_ALL = "all"
1501 NODE_EVAC_MODES = frozenset([
1502   NODE_EVAC_PRI,
1503   NODE_EVAC_SEC,
1504   NODE_EVAC_ALL,
1505   ])
1506
1507 # Job queue
1508 JOB_QUEUE_VERSION = 1
1509 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
1510 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
1511 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
1512 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
1513 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
1514 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
1515 JOB_QUEUE_DIRS = [QUEUE_DIR, JOB_QUEUE_ARCHIVE_DIR]
1516 JOB_QUEUE_DIRS_MODE = SECURE_DIR_MODE
1517
1518 JOB_ID_TEMPLATE = r"\d+"
1519 JOB_FILE_RE = re.compile(r"^job-(%s)$" % JOB_ID_TEMPLATE)
1520
1521 # unchanged job return
1522 JOB_NOTCHANGED = "nochange"
1523
1524 # Job status
1525 JOB_STATUS_QUEUED = "queued"
1526 JOB_STATUS_WAITING = "waiting"
1527 JOB_STATUS_CANCELING = "canceling"
1528 JOB_STATUS_RUNNING = "running"
1529 JOB_STATUS_CANCELED = "canceled"
1530 JOB_STATUS_SUCCESS = "success"
1531 JOB_STATUS_ERROR = "error"
1532 JOBS_FINALIZED = frozenset([
1533   JOB_STATUS_CANCELED,
1534   JOB_STATUS_SUCCESS,
1535   JOB_STATUS_ERROR,
1536   ])
1537 JOB_STATUS_ALL = frozenset([
1538   JOB_STATUS_QUEUED,
1539   JOB_STATUS_WAITING,
1540   JOB_STATUS_CANCELING,
1541   JOB_STATUS_RUNNING,
1542   ]) | JOBS_FINALIZED
1543
1544 # OpCode status
1545 # not yet finalized
1546 OP_STATUS_QUEUED = "queued"
1547 OP_STATUS_WAITING = "waiting"
1548 OP_STATUS_CANCELING = "canceling"
1549 OP_STATUS_RUNNING = "running"
1550 # finalized
1551 OP_STATUS_CANCELED = "canceled"
1552 OP_STATUS_SUCCESS = "success"
1553 OP_STATUS_ERROR = "error"
1554 OPS_FINALIZED = frozenset([
1555   OP_STATUS_CANCELED,
1556   OP_STATUS_SUCCESS,
1557   OP_STATUS_ERROR
1558   ])
1559
1560 # OpCode priority
1561 OP_PRIO_LOWEST = +19
1562 OP_PRIO_HIGHEST = -20
1563
1564 OP_PRIO_LOW = +10
1565 OP_PRIO_NORMAL = 0
1566 OP_PRIO_HIGH = -10
1567
1568 OP_PRIO_SUBMIT_VALID = frozenset([
1569   OP_PRIO_LOW,
1570   OP_PRIO_NORMAL,
1571   OP_PRIO_HIGH,
1572   ])
1573
1574 OP_PRIO_DEFAULT = OP_PRIO_NORMAL
1575
1576 # Execution log types
1577 ELOG_MESSAGE = "message"
1578 ELOG_PROGRESS = "progress"
1579 ELOG_REMOTE_IMPORT = "remote-import"
1580 ELOG_JQUEUE_TEST = "jqueue-test"
1581
1582 # /etc/hosts modification
1583 ETC_HOSTS_ADD = "add"
1584 ETC_HOSTS_REMOVE = "remove"
1585
1586 # Job queue test
1587 JQT_MSGPREFIX = "TESTMSG="
1588 JQT_EXPANDNAMES = "expandnames"
1589 JQT_EXEC = "exec"
1590 JQT_LOGMSG = "logmsg"
1591 JQT_STARTMSG = "startmsg"
1592 JQT_ALL = frozenset([
1593   JQT_EXPANDNAMES,
1594   JQT_EXEC,
1595   JQT_LOGMSG,
1596   JQT_STARTMSG,
1597   ])
1598
1599 # Query resources
1600 QR_INSTANCE = "instance"
1601 QR_NODE = "node"
1602 QR_LOCK = "lock"
1603 QR_GROUP = "group"
1604 QR_OS = "os"
1605
1606 #: List of resources which can be queried using L{opcodes.OpQuery}
1607 QR_VIA_OP = frozenset([QR_INSTANCE, QR_NODE, QR_GROUP, QR_OS])
1608
1609 #: List of resources which can be queried using Local UniX Interface
1610 QR_VIA_LUXI = QR_VIA_OP.union([
1611   QR_LOCK,
1612   ])
1613
1614 #: List of resources which can be queried using RAPI
1615 QR_VIA_RAPI = QR_VIA_LUXI
1616
1617 # Query field types
1618 QFT_UNKNOWN = "unknown"
1619 QFT_TEXT = "text"
1620 QFT_BOOL = "bool"
1621 QFT_NUMBER = "number"
1622 QFT_UNIT = "unit"
1623 QFT_TIMESTAMP = "timestamp"
1624 QFT_OTHER = "other"
1625
1626 #: All query field types
1627 QFT_ALL = frozenset([
1628   QFT_UNKNOWN,
1629   QFT_TEXT,
1630   QFT_BOOL,
1631   QFT_NUMBER,
1632   QFT_UNIT,
1633   QFT_TIMESTAMP,
1634   QFT_OTHER,
1635   ])
1636
1637 # Query result field status (don't change or reuse values as they're used by
1638 # clients)
1639 #: Normal field status
1640 RS_NORMAL = 0
1641 #: Unknown field
1642 RS_UNKNOWN = 1
1643 #: No data (e.g. RPC error), can be used instead of L{RS_OFFLINE}
1644 RS_NODATA = 2
1645 #: Value unavailable/unsupported for item; if this field is supported
1646 #: but we cannot get the data for the moment, RS_NODATA or
1647 #: RS_OFFLINE should be used
1648 RS_UNAVAIL = 3
1649 #: Resource marked offline
1650 RS_OFFLINE = 4
1651
1652 RS_ALL = frozenset([
1653   RS_NORMAL,
1654   RS_UNKNOWN,
1655   RS_NODATA,
1656   RS_UNAVAIL,
1657   RS_OFFLINE,
1658   ])
1659
1660 #: Dictionary with special field cases and their verbose/terse formatting
1661 RSS_DESCRIPTION = {
1662   RS_UNKNOWN: ("(unknown)", "??"),
1663   RS_NODATA: ("(nodata)", "?"),
1664   RS_OFFLINE: ("(offline)", "*"),
1665   RS_UNAVAIL: ("(unavail)", "-"),
1666   }
1667
1668 # max dynamic devices
1669 MAX_NICS = 8
1670 MAX_DISKS = 16
1671
1672 # SSCONF keys
1673 SS_CLUSTER_NAME = "cluster_name"
1674 SS_CLUSTER_TAGS = "cluster_tags"
1675 SS_FILE_STORAGE_DIR = "file_storage_dir"
1676 SS_SHARED_FILE_STORAGE_DIR = "shared_file_storage_dir"
1677 SS_MASTER_CANDIDATES = "master_candidates"
1678 SS_MASTER_CANDIDATES_IPS = "master_candidates_ips"
1679 SS_MASTER_IP = "master_ip"
1680 SS_MASTER_NETDEV = "master_netdev"
1681 SS_MASTER_NETMASK = "master_netmask"
1682 SS_MASTER_NODE = "master_node"
1683 SS_NODE_LIST = "node_list"
1684 SS_NODE_PRIMARY_IPS = "node_primary_ips"
1685 SS_NODE_SECONDARY_IPS = "node_secondary_ips"
1686 SS_OFFLINE_NODES = "offline_nodes"
1687 SS_ONLINE_NODES = "online_nodes"
1688 SS_PRIMARY_IP_FAMILY = "primary_ip_family"
1689 SS_INSTANCE_LIST = "instance_list"
1690 SS_RELEASE_VERSION = "release_version"
1691 SS_HYPERVISOR_LIST = "hypervisor_list"
1692 SS_MAINTAIN_NODE_HEALTH = "maintain_node_health"
1693 SS_UID_POOL = "uid_pool"
1694 SS_NODEGROUPS = "nodegroups"
1695
1696 SS_FILE_PERMS = 0444
1697
1698 # cluster wide default parameters
1699 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
1700
1701 HVC_DEFAULTS = {
1702   HT_XEN_PVM: {
1703     HV_USE_BOOTLOADER: False,
1704     HV_BOOTLOADER_PATH: XEN_BOOTLOADER,
1705     HV_BOOTLOADER_ARGS: "",
1706     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU",
1707     HV_INITRD_PATH: "",
1708     HV_ROOT_PATH: "/dev/sda1",
1709     HV_KERNEL_ARGS: "ro",
1710     HV_MIGRATION_PORT: 8002,
1711     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1712     HV_BLOCKDEV_PREFIX: "sd",
1713     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1714     HV_CPU_MASK: CPU_PINNING_ALL,
1715     },
1716   HT_XEN_HVM: {
1717     HV_BOOT_ORDER: "cd",
1718     HV_CDROM_IMAGE_PATH: "",
1719     HV_NIC_TYPE: HT_NIC_RTL8139,
1720     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1721     HV_VNC_BIND_ADDRESS: IP4_ADDRESS_ANY,
1722     HV_VNC_PASSWORD_FILE: VNC_PASSWORD_FILE,
1723     HV_ACPI: True,
1724     HV_PAE: True,
1725     HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
1726     HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
1727     HV_MIGRATION_PORT: 8002,
1728     HV_MIGRATION_MODE: HT_MIGRATION_NONLIVE,
1729     HV_USE_LOCALTIME: False,
1730     HV_BLOCKDEV_PREFIX: "hd",
1731     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1732     HV_CPU_MASK: CPU_PINNING_ALL,
1733     },
1734   HT_KVM: {
1735     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU",
1736     HV_INITRD_PATH: "",
1737     HV_KERNEL_ARGS: "ro",
1738     HV_ROOT_PATH: "/dev/vda1",
1739     HV_ACPI: True,
1740     HV_SERIAL_CONSOLE: True,
1741     HV_VNC_BIND_ADDRESS: "",
1742     HV_VNC_TLS: False,
1743     HV_VNC_X509: "",
1744     HV_VNC_X509_VERIFY: False,
1745     HV_VNC_PASSWORD_FILE: "",
1746     HV_KVM_SPICE_BIND: "",
1747     HV_KVM_SPICE_IP_VERSION: IFACE_NO_IP_VERSION_SPECIFIED,
1748     HV_KVM_SPICE_PASSWORD_FILE: "",
1749     HV_KVM_SPICE_LOSSLESS_IMG_COMPR: "",
1750     HV_KVM_SPICE_JPEG_IMG_COMPR: "",
1751     HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: "",
1752     HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: "",
1753     HV_KVM_SPICE_AUDIO_COMPR: True,
1754     HV_KVM_SPICE_USE_TLS: False,
1755     HV_KVM_SPICE_TLS_CIPHERS: OPENSSL_CIPHERS,
1756     HV_KVM_SPICE_USE_VDAGENT: True,
1757     HV_KVM_FLOPPY_IMAGE_PATH: "",
1758     HV_CDROM_IMAGE_PATH: "",
1759     HV_KVM_CDROM2_IMAGE_PATH: "",
1760     HV_BOOT_ORDER: HT_BO_DISK,
1761     HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
1762     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1763     HV_KVM_CDROM_DISK_TYPE: "",
1764     HV_USB_MOUSE: "",
1765     HV_KEYMAP: "",
1766     HV_MIGRATION_PORT: 8102,
1767     HV_MIGRATION_BANDWIDTH: 32, # MiB/s
1768     HV_MIGRATION_DOWNTIME: 30,  # ms
1769     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1770     HV_USE_LOCALTIME: False,
1771     HV_DISK_CACHE: HT_CACHE_DEFAULT,
1772     HV_SECURITY_MODEL: HT_SM_NONE,
1773     HV_SECURITY_DOMAIN: "",
1774     HV_KVM_FLAG: "",
1775     HV_VHOST_NET: False,
1776     HV_KVM_USE_CHROOT: False,
1777     HV_MEM_PATH: "",
1778     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1779     HV_CPU_MASK: CPU_PINNING_ALL,
1780     },
1781   HT_FAKE: {
1782     },
1783   HT_CHROOT: {
1784     HV_INIT_SCRIPT: "/ganeti-chroot",
1785     },
1786   HT_LXC: {
1787     HV_CPU_MASK: "",
1788     },
1789   }
1790
1791 HVC_GLOBALS = frozenset([
1792   HV_MIGRATION_PORT,
1793   HV_MIGRATION_BANDWIDTH,
1794   HV_MIGRATION_MODE,
1795   ])
1796
1797 BEC_DEFAULTS = {
1798   BE_MINMEM: 128,
1799   BE_MAXMEM: 128,
1800   BE_VCPUS: 1,
1801   BE_AUTO_BALANCE: True,
1802   BE_ALWAYS_FAILOVER: False,
1803   }
1804
1805 NDC_DEFAULTS = {
1806   ND_OOB_PROGRAM: None,
1807   }
1808
1809 DISK_LD_DEFAULTS = {
1810   LD_DRBD8: {
1811     LDP_RESYNC_RATE: CLASSIC_DRBD_SYNC_SPEED,
1812     LDP_BARRIERS: _autoconf.DRBD_BARRIERS,
1813     LDP_NO_META_FLUSH: _autoconf.DRBD_NO_META_FLUSH,
1814     LDP_DEFAULT_METAVG: DEFAULT_VG,
1815     LDP_DISK_CUSTOM: "",
1816     LDP_NET_CUSTOM: "",
1817     LDP_DYNAMIC_RESYNC: False,
1818
1819     # The default values for the DRBD dynamic resync speed algorithm are taken
1820     # from the drbsetup 8.3.11 man page, except for c-plan-ahead (that we
1821     # don't need to set to 0, because we have a separate option to enable it)
1822     # and for c-max-rate, that we cap to the default value for the static resync
1823     # rate.
1824     LDP_PLAN_AHEAD: 20, # ds
1825     LDP_FILL_TARGET: 0, # sectors
1826     LDP_DELAY_TARGET: 1, # ds
1827     LDP_MAX_RATE: CLASSIC_DRBD_SYNC_SPEED, # KiB/s
1828     LDP_MIN_RATE: 4 * 1024, # KiB/s
1829     },
1830   LD_LV: {
1831     LDP_STRIPES: _autoconf.LVM_STRIPECOUNT
1832     },
1833   LD_FILE: {
1834     },
1835   LD_BLOCKDEV: {
1836     },
1837   LD_RBD: {
1838     LDP_POOL: "rbd"
1839     },
1840   }
1841
1842 # readability shortcuts
1843 _LV_DEFAULTS = DISK_LD_DEFAULTS[LD_LV]
1844 _DRBD_DEFAULTS = DISK_LD_DEFAULTS[LD_DRBD8]
1845
1846 DISK_DT_DEFAULTS = {
1847   DT_PLAIN: {
1848     LV_STRIPES: DISK_LD_DEFAULTS[LD_LV][LDP_STRIPES],
1849     },
1850   DT_DRBD8: {
1851     DRBD_RESYNC_RATE: _DRBD_DEFAULTS[LDP_RESYNC_RATE],
1852     DRBD_DATA_STRIPES: _LV_DEFAULTS[LDP_STRIPES],
1853     DRBD_META_STRIPES: _LV_DEFAULTS[LDP_STRIPES],
1854     DRBD_DISK_BARRIERS: _DRBD_DEFAULTS[LDP_BARRIERS],
1855     DRBD_META_BARRIERS: _DRBD_DEFAULTS[LDP_NO_META_FLUSH],
1856     DRBD_DEFAULT_METAVG: _DRBD_DEFAULTS[LDP_DEFAULT_METAVG],
1857     DRBD_DISK_CUSTOM: _DRBD_DEFAULTS[LDP_DISK_CUSTOM],
1858     DRBD_NET_CUSTOM: _DRBD_DEFAULTS[LDP_NET_CUSTOM],
1859     DRBD_DYNAMIC_RESYNC: _DRBD_DEFAULTS[LDP_DYNAMIC_RESYNC],
1860     DRBD_PLAN_AHEAD: _DRBD_DEFAULTS[LDP_PLAN_AHEAD],
1861     DRBD_FILL_TARGET: _DRBD_DEFAULTS[LDP_FILL_TARGET],
1862     DRBD_DELAY_TARGET: _DRBD_DEFAULTS[LDP_DELAY_TARGET],
1863     DRBD_MAX_RATE: _DRBD_DEFAULTS[LDP_MAX_RATE],
1864     DRBD_MIN_RATE: _DRBD_DEFAULTS[LDP_MIN_RATE],
1865     },
1866   DT_DISKLESS: {
1867     },
1868   DT_FILE: {
1869     },
1870   DT_SHARED_FILE: {
1871     },
1872   DT_BLOCK: {
1873     },
1874   DT_RBD: {
1875     RBD_POOL: DISK_LD_DEFAULTS[LD_RBD][LDP_POOL]
1876     },
1877   }
1878
1879 # we don't want to export the shortcuts
1880 del _LV_DEFAULTS, _DRBD_DEFAULTS
1881
1882 NICC_DEFAULTS = {
1883   NIC_MODE: NIC_MODE_BRIDGED,
1884   NIC_LINK: DEFAULT_BRIDGE,
1885   }
1886
1887 IPOLICY_DEFAULTS = {
1888   ISPECS_MIN: {
1889     ISPEC_MEM_SIZE: 128,
1890     ISPEC_CPU_COUNT: 1,
1891     ISPEC_DISK_COUNT: 1,
1892     ISPEC_DISK_SIZE: 1024,
1893     ISPEC_NIC_COUNT: 1,
1894     },
1895   ISPECS_MAX: {
1896     ISPEC_MEM_SIZE: 32768,
1897     ISPEC_CPU_COUNT: 8,
1898     ISPEC_DISK_COUNT: MAX_DISKS,
1899     ISPEC_DISK_SIZE: 1024 * 1024,
1900     ISPEC_NIC_COUNT: MAX_NICS,
1901     },
1902   ISPECS_STD: {
1903     ISPEC_MEM_SIZE: 128,
1904     ISPEC_CPU_COUNT: 1,
1905     ISPEC_DISK_COUNT: 1,
1906     ISPEC_DISK_SIZE: 1024,
1907     ISPEC_NIC_COUNT: 1,
1908     },
1909   IPOLICY_DTS: DISK_TEMPLATES,
1910   }
1911
1912 MASTER_POOL_SIZE_DEFAULT = 10
1913
1914 CONFD_PROTOCOL_VERSION = 1
1915
1916 CONFD_REQ_PING = 0
1917 CONFD_REQ_NODE_ROLE_BYNAME = 1
1918 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP = 2
1919 CONFD_REQ_CLUSTER_MASTER = 3
1920 CONFD_REQ_NODE_PIP_LIST = 4
1921 CONFD_REQ_MC_PIP_LIST = 5
1922 CONFD_REQ_INSTANCES_IPS_LIST = 6
1923
1924 # Confd request query fields. These are used to narrow down queries.
1925 # These must be strings rather than integers, because json-encoding
1926 # converts them to strings anyway, as they're used as dict-keys.
1927 CONFD_REQQ_LINK = "0"
1928 CONFD_REQQ_IP = "1"
1929 CONFD_REQQ_IPLIST = "2"
1930 CONFD_REQQ_FIELDS = "3"
1931
1932 CONFD_REQFIELD_NAME = "0"
1933 CONFD_REQFIELD_IP = "1"
1934 CONFD_REQFIELD_MNODE_PIP = "2"
1935
1936 CONFD_REQS = frozenset([
1937   CONFD_REQ_PING,
1938   CONFD_REQ_NODE_ROLE_BYNAME,
1939   CONFD_REQ_NODE_PIP_BY_INSTANCE_IP,
1940   CONFD_REQ_CLUSTER_MASTER,
1941   CONFD_REQ_NODE_PIP_LIST,
1942   CONFD_REQ_MC_PIP_LIST,
1943   CONFD_REQ_INSTANCES_IPS_LIST,
1944   ])
1945
1946 CONFD_REPL_STATUS_OK = 0
1947 CONFD_REPL_STATUS_ERROR = 1
1948 CONFD_REPL_STATUS_NOTIMPLEMENTED = 2
1949
1950 CONFD_REPL_STATUSES = frozenset([
1951   CONFD_REPL_STATUS_OK,
1952   CONFD_REPL_STATUS_ERROR,
1953   CONFD_REPL_STATUS_NOTIMPLEMENTED,
1954   ])
1955
1956 (CONFD_NODE_ROLE_MASTER,
1957  CONFD_NODE_ROLE_CANDIDATE,
1958  CONFD_NODE_ROLE_OFFLINE,
1959  CONFD_NODE_ROLE_DRAINED,
1960  CONFD_NODE_ROLE_REGULAR,
1961  ) = range(5)
1962
1963 # A few common errors for confd
1964 CONFD_ERROR_UNKNOWN_ENTRY = 1
1965 CONFD_ERROR_INTERNAL = 2
1966 CONFD_ERROR_ARGUMENT = 3
1967
1968 # Each request is "salted" by the current timestamp.
1969 # This constants decides how many seconds of skew to accept.
1970 # TODO: make this a default and allow the value to be more configurable
1971 CONFD_MAX_CLOCK_SKEW = 2 * NODE_MAX_CLOCK_SKEW
1972
1973 # When we haven't reloaded the config for more than this amount of seconds, we
1974 # force a test to see if inotify is betraying us.
1975 CONFD_CONFIG_RELOAD_TIMEOUT = 60
1976
1977 # If we receive more than one update in this amount of seconds, we move to
1978 # polling every RATELIMIT seconds, rather than relying on inotify, to be able
1979 # to serve more requests.
1980 CONFD_CONFIG_RELOAD_RATELIMIT = 2
1981
1982 # Magic number prepended to all confd queries.
1983 # This allows us to distinguish different types of confd protocols and handle
1984 # them. For example by changing this we can move the whole payload to be
1985 # compressed, or move away from json.
1986 CONFD_MAGIC_FOURCC = "plj0"
1987
1988 # By default a confd request is sent to the minimum between this number and all
1989 # MCs. 6 was chosen because even in the case of a disastrous 50% response rate,
1990 # we should have enough answers to be able to compare more than one.
1991 CONFD_DEFAULT_REQ_COVERAGE = 6
1992
1993 # Timeout in seconds to expire pending query request in the confd client
1994 # library. We don't actually expect any answer more than 10 seconds after we
1995 # sent a request.
1996 CONFD_CLIENT_EXPIRE_TIMEOUT = 10
1997
1998 # Maximum UDP datagram size.
1999 # On IPv4: 64K - 20 (ip header size) - 8 (udp header size) = 65507
2000 # On IPv6: 64K - 40 (ip6 header size) - 8 (udp header size) = 65487
2001 #   (assuming we can't use jumbo frames)
2002 # We just set this to 60K, which should be enough
2003 MAX_UDP_DATA_SIZE = 61440
2004
2005 # User-id pool minimum/maximum acceptable user-ids.
2006 UIDPOOL_UID_MIN = 0
2007 UIDPOOL_UID_MAX = 2 ** 32 - 1 # Assuming 32 bit user-ids
2008
2009 # Name or path of the pgrep command
2010 PGREP = "pgrep"
2011
2012 # Name of the node group that gets created at cluster init or upgrade
2013 INITIAL_NODE_GROUP_NAME = "default"
2014
2015 # Possible values for NodeGroup.alloc_policy
2016 ALLOC_POLICY_PREFERRED = "preferred"
2017 ALLOC_POLICY_LAST_RESORT = "last_resort"
2018 ALLOC_POLICY_UNALLOCABLE = "unallocable"
2019 VALID_ALLOC_POLICIES = [
2020   ALLOC_POLICY_PREFERRED,
2021   ALLOC_POLICY_LAST_RESORT,
2022   ALLOC_POLICY_UNALLOCABLE,
2023   ]
2024
2025 # Temporary external/shared storage parameters
2026 BLOCKDEV_DRIVER_MANUAL = "manual"
2027
2028 # qemu-img path, required for ovfconverter
2029 QEMUIMG_PATH = _autoconf.QEMUIMG_PATH
2030
2031 # Whether htools was enabled at compilation time
2032 HTOOLS = _autoconf.HTOOLS
2033 # The hail iallocator
2034 IALLOC_HAIL = "hail"
2035
2036 # Fake opcodes for functions that have hooks attached to them via
2037 # backend.RunLocalHooks
2038 FAKE_OP_MASTER_TURNUP = "OP_CLUSTER_IP_TURNUP"
2039 FAKE_OP_MASTER_TURNDOWN = "OP_CLUSTER_IP_TURNDOWN"
2040
2041 # Do not re-export imported modules
2042 del re, _vcsversion, _autoconf