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

   1 #
   2 #
   3
   4 # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 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
 184 #: Lock file for watcher, locked in shared mode by watcher; lock in exclusive
 185 # mode to block watcher (see L{cli._RunWhileClusterStoppedHelper.Call}
 186 WATCHER_LOCK_FILE = LOCK_DIR + "/ganeti-watcher.lock"
 187
 188 #: Status file for per-group watcher, locked in exclusive mode by watcher
 189 WATCHER_GROUP_STATE_FILE = DATA_DIR + "/watcher.%s.data"
 190
 191 #: File for per-group instance status, merged into L{INSTANCE_STATUS_FILE} by
 192 #: per-group processes
 193 WATCHER_GROUP_INSTANCE_STATUS_FILE = DATA_DIR + "/watcher.%s.instance-status"
 194
 195 #: File containing Unix timestamp until which watcher should be paused
 196 WATCHER_PAUSEFILE = DATA_DIR + "/watcher.pause"
 197
 198 ALL_CERT_FILES = frozenset([
 199   NODED_CERT_FILE,
 200   RAPI_CERT_FILE,
 201   SPICE_CERT_FILE,
 202   SPICE_CACERT_FILE,
 203   ])
 204
 205 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 206
 207 NODED = "ganeti-noded"
 208 CONFD = "ganeti-confd"
 209 RAPI = "ganeti-rapi"
 210 MASTERD = "ganeti-masterd"
 211 # used in the ganeti-nbma project
 212 NLD = "ganeti-nld"
 213
 214 DAEMONS_PORTS = {
 215   # daemon-name: ("proto", "default-port")
 216   NODED: ("tcp", 1811),
 217   CONFD: ("udp", 1814),
 218   RAPI: ("tcp", 5080),
 219   "ssh": ("tcp", 22),
 220   # used in the ganeti-nbma project
 221   NLD: ("udp", 1816),
 222 }
 223 DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
 224 DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
 225 DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
 226 # used in the ganeti-nbma project
 227 DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
 228
 229 FIRST_DRBD_PORT = 11000
 230 LAST_DRBD_PORT = 14999
 231 MASTER_SCRIPT = "ganeti-master"
 232
 233 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
 234 DAEMONS_LOGFILES = {
 235   # "daemon-name": "logfile"
 236   NODED: LOG_DIR + "node-daemon.log",
 237   CONFD: LOG_DIR + "conf-daemon.log",
 238   RAPI: LOG_DIR + "rapi-daemon.log",
 239   MASTERD: LOG_DIR + "master-daemon.log",
 240   # used in the ganeti-nbma project
 241   NLD: LOG_DIR + "nl-daemon.log",
 242   }
 243
 244 LOG_OS_DIR = LOG_DIR + "os"
 245 LOG_WATCHER = LOG_DIR + "watcher.log"
 246 LOG_COMMANDS = LOG_DIR + "commands.log"
 247 LOG_BURNIN = LOG_DIR + "burnin.log"
 248 LOG_SETUP_SSH = LOG_DIR + "setup-ssh.log"
 249
 250 DEV_CONSOLE = "/dev/console"
 251
 252 PROC_MOUNTS = "/proc/mounts"
 253
 254 # Local UniX Interface related constants
 255 LUXI_EOM = "\3"
 256 LUXI_VERSION = CONFIG_VERSION
 257
 258 # one of "no", "yes", "only"
 259 SYSLOG_USAGE = _autoconf.SYSLOG_USAGE
 260 SYSLOG_NO = "no"
 261 SYSLOG_YES = "yes"
 262 SYSLOG_ONLY = "only"
 263 SYSLOG_SOCKET = "/dev/log"
 264
 265 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
 266 EXPORT_DIR = _autoconf.EXPORT_DIR
 267
 268 EXPORT_CONF_FILE = "config.ini"
 269
 270 XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
 271 XEN_KERNEL = _autoconf.XEN_KERNEL
 272 XEN_INITRD = _autoconf.XEN_INITRD
 273
 274 KVM_PATH = _autoconf.KVM_PATH
 275 SOCAT_PATH = _autoconf.SOCAT_PATH
 276 SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
 277 SOCAT_USE_COMPRESS = _autoconf.SOCAT_USE_COMPRESS
 278 SOCAT_ESCAPE_CODE = "0x1d"
 279
 280 #: Console as SSH command
 281 CONS_SSH = "ssh"
 282
 283 #: Console as VNC server
 284 CONS_VNC = "vnc"
 285
 286 #: Console as SPICE server
 287 CONS_SPICE = "spice"
 288
 289 #: Display a message for console access
 290 CONS_MESSAGE = "msg"
 291
 292 #: All console types
 293 CONS_ALL = frozenset([CONS_SSH, CONS_VNC, CONS_SPICE, CONS_MESSAGE])
 294
 295 # For RSA keys more bits are better, but they also make operations more
 296 # expensive. NIST SP 800-131 recommends a minimum of 2048 bits from the year
 297 # 2010 on.
 298 RSA_KEY_BITS = 2048
 299
 300 # Ciphers allowed for SSL connections. For the format, see ciphers(1). A better
 301 # way to disable ciphers would be to use the exclamation mark (!), but socat
 302 # versions below 1.5 can't parse exclamation marks in options properly. When
 303 # modifying the ciphers, ensure not to accidentially add something after it's
 304 # been removed. Use the "openssl" utility to check the allowed ciphers, e.g.
 305 # "openssl ciphers -v HIGH:-DES".
 306 OPENSSL_CIPHERS = "HIGH:-DES:-3DES:-EXPORT:-ADH"
 307
 308 # Digest used to sign certificates ("openssl x509" uses SHA1 by default)
 309 X509_CERT_SIGN_DIGEST = "SHA1"
 310
 311 # Default validity of certificates in days
 312 X509_CERT_DEFAULT_VALIDITY = 365 * 5
 313
 314 # commonName (CN) used in certificates
 315 X509_CERT_CN = "ganeti.example.com"
 316
 317 X509_CERT_SIGNATURE_HEADER = "X-Ganeti-Signature"
 318
 319 IMPORT_EXPORT_DAEMON = _autoconf.PKGLIBDIR + "/import-export"
 320
 321 # Import/export daemon mode
 322 IEM_IMPORT = "import"
 323 IEM_EXPORT = "export"
 324
 325 # Import/export transport compression
 326 IEC_NONE = "none"
 327 IEC_GZIP = "gzip"
 328 IEC_ALL = frozenset([
 329   IEC_NONE,
 330   IEC_GZIP,
 331   ])
 332
 333 IE_CUSTOM_SIZE = "fd"
 334
 335 IE_MAGIC_RE = re.compile(r"^[-_.a-zA-Z0-9]{5,100}$")
 336
 337 # Import/export I/O
 338 # Direct file I/O, equivalent to a shell's I/O redirection using '<' or '>'
 339 IEIO_FILE = "file"
 340 # Raw block device I/O using "dd"
 341 IEIO_RAW_DISK = "raw"
 342 # OS definition import/export script
 343 IEIO_SCRIPT = "script"
 344
 345 VALUE_DEFAULT = "default"
 346 VALUE_AUTO = "auto"
 347 VALUE_GENERATE = "generate"
 348 VALUE_NONE = "none"
 349 VALUE_TRUE = "true"
 350 VALUE_FALSE = "false"
 351
 352 # External script validation mask
 353 EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")
 354
 355 # hooks-related constants
 356 HOOKS_BASE_DIR = CONF_DIR + "/hooks"
 357 HOOKS_PHASE_PRE = "pre"
 358 HOOKS_PHASE_POST = "post"
 359 HOOKS_NAME_CFGUPDATE = "config-update"
 360 HOOKS_NAME_WATCHER = "watcher"
 361 HOOKS_VERSION = 2
 362
 363 # hooks subject type (what object type does the LU deal with)
 364 HTYPE_CLUSTER = "CLUSTER"
 365 HTYPE_NODE = "NODE"
 366 HTYPE_GROUP = "GROUP"
 367 HTYPE_INSTANCE = "INSTANCE"
 368
 369 HKR_SKIP = 0
 370 HKR_FAIL = 1
 371 HKR_SUCCESS = 2
 372
 373 # Storage types
 374 ST_FILE = "file"
 375 ST_LVM_PV = "lvm-pv"
 376 ST_LVM_VG = "lvm-vg"
 377
 378 # Storage fields
 379 # first two are valid in LU context only, not passed to backend
 380 SF_NODE = "node"
 381 SF_TYPE = "type"
 382 # and the rest are valid in backend
 383 SF_NAME = "name"
 384 SF_SIZE = "size"
 385 SF_FREE = "free"
 386 SF_USED = "used"
 387 SF_ALLOCATABLE = "allocatable"
 388
 389 # Storage operations
 390 SO_FIX_CONSISTENCY = "fix-consistency"
 391
 392 # Available fields per storage type
 393 VALID_STORAGE_FIELDS = frozenset([
 394   SF_NAME,
 395   SF_TYPE,
 396   SF_SIZE,
 397   SF_USED,
 398   SF_FREE,
 399   SF_ALLOCATABLE
 400   ])
 401
 402 VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
 403
 404 MODIFIABLE_STORAGE_FIELDS = {
 405   ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
 406   }
 407
 408 VALID_STORAGE_OPERATIONS = {
 409   ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
 410   }
 411
 412 # Local disk status
 413 # Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
 414 (LDS_OKAY,
 415  LDS_UNKNOWN,
 416  LDS_FAULTY) = range(1, 4)
 417
 418 # disk template types
 419 DT_DISKLESS = "diskless"
 420 DT_PLAIN = "plain"
 421 DT_DRBD8 = "drbd"
 422 DT_FILE = "file"
 423 DT_SHARED_FILE = "sharedfile"
 424 DT_BLOCK = "blockdev"
 425
 426 # the set of network-mirrored disk templates
 427 DTS_INT_MIRROR = frozenset([DT_DRBD8])
 428
 429 # the set of externally-mirrored disk templates (e.g. SAN, NAS)
 430 DTS_EXT_MIRROR = frozenset([DT_SHARED_FILE, DT_BLOCK])
 431
 432 # the set of non-lvm-based disk templates
 433 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE, DT_SHARED_FILE, DT_BLOCK])
 434
 435 # the set of disk templates which can be grown
 436 DTS_GROWABLE = frozenset([DT_PLAIN, DT_DRBD8, DT_FILE, DT_SHARED_FILE])
 437
 438 # the set of disk templates that allow adoption
 439 DTS_MAY_ADOPT = frozenset([DT_PLAIN, DT_BLOCK])
 440
 441 # the set of disk templates that *must* use adoption
 442 DTS_MUST_ADOPT = frozenset([DT_BLOCK])
 443
 444 # the set of disk templates that allow migrations
 445 DTS_MIRRORED = frozenset.union(DTS_INT_MIRROR, DTS_EXT_MIRROR)
 446
 447 # the set of file based disk templates
 448 DTS_FILEBASED = frozenset([DT_FILE, DT_SHARED_FILE])
 449
 450 # logical disk types
 451 LD_LV = "lvm"
 452 LD_DRBD8 = "drbd8"
 453 LD_FILE = "file"
 454 LD_BLOCKDEV = "blockdev"
 455 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8, LD_BLOCKDEV])
 456
 457 # drbd constants
 458 DRBD_HMAC_ALG = "md5"
 459 DRBD_NET_PROTOCOL = "C"
 460 DRBD_BARRIERS = _autoconf.DRBD_BARRIERS
 461
 462 # file backend driver
 463 FD_LOOP = "loop"
 464 FD_BLKTAP = "blktap"
 465
 466 # the set of drbd-like disk types
 467 LDS_DRBD = frozenset([LD_DRBD8])
 468
 469 # disk access mode
 470 DISK_RDONLY = "ro"
 471 DISK_RDWR = "rw"
 472 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
 473
 474 # disk replacement mode
 475 REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
 476 REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
 477 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
 478 REPLACE_DISK_AUTO = "replace_auto"
 479 REPLACE_MODES = frozenset([
 480   REPLACE_DISK_PRI,
 481   REPLACE_DISK_SEC,
 482   REPLACE_DISK_CHG,
 483   REPLACE_DISK_AUTO,
 484   ])
 485
 486 # Instance export mode
 487 EXPORT_MODE_LOCAL = "local"
 488 EXPORT_MODE_REMOTE = "remote"
 489 EXPORT_MODES = frozenset([
 490   EXPORT_MODE_LOCAL,
 491   EXPORT_MODE_REMOTE,
 492   ])
 493
 494 # Lock recalculate mode
 495 LOCKS_REPLACE = "replace"
 496 LOCKS_APPEND = "append"
 497
 498 # Lock timeout (sum) before we should go into blocking acquire (still
 499 # can be reset by priority change); computed as max time (10 hours)
 500 # before we should actually go into blocking acquire given that we
 501 # start from default priority level; in seconds
 502 LOCK_ATTEMPTS_TIMEOUT = 10 * 3600 / 20.0
 503 LOCK_ATTEMPTS_MAXWAIT = 15.0
 504 LOCK_ATTEMPTS_MINWAIT = 1.0
 505
 506 # instance creation modes
 507 INSTANCE_CREATE = "create"
 508 INSTANCE_IMPORT = "import"
 509 INSTANCE_REMOTE_IMPORT = "remote-import"
 510 INSTANCE_CREATE_MODES = frozenset([
 511   INSTANCE_CREATE,
 512   INSTANCE_IMPORT,
 513   INSTANCE_REMOTE_IMPORT,
 514   ])
 515
 516 # Remote import/export handshake message and version
 517 RIE_VERSION = 0
 518 RIE_HANDSHAKE = "Hi, I'm Ganeti"
 519
 520 # Remote import/export certificate validity in seconds
 521 RIE_CERT_VALIDITY = 24 * 60 * 60
 522
 523 # Overall timeout for establishing connection
 524 RIE_CONNECT_TIMEOUT = 180
 525
 526 # Export only: how long to wait per connection attempt (seconds)
 527 RIE_CONNECT_ATTEMPT_TIMEOUT = 20
 528
 529 # Export only: number of attempts to connect
 530 RIE_CONNECT_RETRIES = 10
 531
 532 #: Give child process up to 5 seconds to exit after sending a signal
 533 CHILD_LINGER_TIMEOUT = 5.0
 534
 535 DISK_TEMPLATES = frozenset([
 536   DT_DISKLESS,
 537   DT_PLAIN,
 538   DT_DRBD8,
 539   DT_FILE,
 540   DT_SHARED_FILE,
 541   DT_BLOCK
 542   ])
 543
 544 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
 545
 546 # import/export config options
 547 INISECT_EXP = "export"
 548 INISECT_INS = "instance"
 549 INISECT_HYP = "hypervisor"
 550 INISECT_BEP = "backend"
 551 INISECT_OSP = "os"
 552
 553 # dynamic device modification
 554 DDM_ADD = "add"
 555 DDM_REMOVE = "remove"
 556 DDMS_VALUES = frozenset([DDM_ADD, DDM_REMOVE])
 557
 558 # common exit codes
 559 EXIT_SUCCESS = 0
 560 EXIT_FAILURE = 1
 561 EXIT_NOTCLUSTER = 5
 562 EXIT_NOTMASTER = 11
 563 EXIT_NODESETUP_ERROR = 12
 564 EXIT_CONFIRMATION = 13 # need user confirmation
 565
 566 #: Exit code for query operations with unknown fields
 567 EXIT_UNKNOWN_FIELD = 14
 568
 569 # tags
 570 TAG_CLUSTER = "cluster"
 571 TAG_NODEGROUP = "nodegroup"
 572 TAG_NODE = "node"
 573 TAG_INSTANCE = "instance"
 574 VALID_TAG_TYPES = frozenset([
 575   TAG_CLUSTER,
 576   TAG_NODEGROUP,
 577   TAG_NODE,
 578   TAG_INSTANCE,
 579   ])
 580 MAX_TAG_LEN = 128
 581 MAX_TAGS_PER_OBJ = 4096
 582
 583 # others
 584 DEFAULT_BRIDGE = "xen-br0"
 585 SYNC_SPEED = 60 * 1024
 586 IP4_ADDRESS_LOCALHOST = "127.0.0.1"
 587 IP4_ADDRESS_ANY = "0.0.0.0"
 588 IP6_ADDRESS_LOCALHOST = "::1"
 589 IP6_ADDRESS_ANY = "::"
 590 IP4_VERSION = 4
 591 IP6_VERSION = 6
 592 VALID_IP_VERSIONS = frozenset([IP4_VERSION, IP6_VERSION])
 593 TCP_PING_TIMEOUT = 10
 594 GANETI_RUNAS = "root"
 595 DEFAULT_VG = "xenvg"
 596 DEFAULT_DRBD_HELPER = "/bin/true"
 597 MIN_VG_SIZE = 20480
 598 DEFAULT_MAC_PREFIX = "aa:00:00"
 599 LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT
 600 # default maximum instance wait time, in seconds.
 601 DEFAULT_SHUTDOWN_TIMEOUT = 120
 602 NODE_MAX_CLOCK_SKEW = 150
 603 # Time for an intra-cluster disk transfer to wait for a connection
 604 DISK_TRANSFER_CONNECT_TIMEOUT = 60
 605 # Disk index separator
 606 DISK_SEPARATOR = _autoconf.DISK_SEPARATOR
 607 IP_COMMAND_PATH = _autoconf.IP_PATH
 608
 609 #: Key for job IDs in opcode result
 610 JOB_IDS_KEY = "jobs"
 611
 612 # runparts results
 613 (RUNPARTS_SKIP,
 614  RUNPARTS_RUN,
 615  RUNPARTS_ERR) = range(3)
 616
 617 RUNPARTS_STATUS = frozenset([RUNPARTS_SKIP, RUNPARTS_RUN, RUNPARTS_ERR])
 618
 619 # RPC constants
 620 (RPC_ENCODING_NONE,
 621  RPC_ENCODING_ZLIB_BASE64) = range(2)
 622
 623 # os related constants
 624 OS_SCRIPT_CREATE = "create"
 625 OS_SCRIPT_IMPORT = "import"
 626 OS_SCRIPT_EXPORT = "export"
 627 OS_SCRIPT_RENAME = "rename"
 628 OS_SCRIPT_VERIFY = "verify"
 629 OS_SCRIPTS = frozenset([
 630   OS_SCRIPT_CREATE,
 631   OS_SCRIPT_IMPORT,
 632   OS_SCRIPT_EXPORT,
 633   OS_SCRIPT_RENAME,
 634   OS_SCRIPT_VERIFY
 635   ])
 636
 637 OS_API_FILE = "ganeti_api_version"
 638 OS_VARIANTS_FILE = "variants.list"
 639 OS_PARAMETERS_FILE = "parameters.list"
 640
 641 OS_VALIDATE_PARAMETERS = "parameters"
 642 OS_VALIDATE_CALLS = frozenset([OS_VALIDATE_PARAMETERS])
 643
 644 # ssh constants
 645 SSH_CONFIG_DIR = _autoconf.SSH_CONFIG_DIR
 646 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_dsa_key"
 647 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
 648 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_rsa_key"
 649 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
 650 SSH = "ssh"
 651 SCP = "scp"
 652
 653 # reboot types
 654 INSTANCE_REBOOT_SOFT = "soft"
 655 INSTANCE_REBOOT_HARD = "hard"
 656 INSTANCE_REBOOT_FULL = "full"
 657
 658 REBOOT_TYPES = frozenset([
 659   INSTANCE_REBOOT_SOFT,
 660   INSTANCE_REBOOT_HARD,
 661   INSTANCE_REBOOT_FULL
 662   ])
 663
 664 # instance reboot behaviors
 665 INSTANCE_REBOOT_ALLOWED = "reboot"
 666 INSTANCE_REBOOT_EXIT = "exit"
 667
 668 REBOOT_BEHAVIORS = frozenset([
 669   INSTANCE_REBOOT_ALLOWED,
 670   INSTANCE_REBOOT_EXIT
 671   ])
 672
 673 VTYPE_STRING = "string"
 674 VTYPE_MAYBE_STRING = "maybe-string"
 675 VTYPE_BOOL = "bool"
 676 VTYPE_SIZE = "size" # size, in MiBs
 677 VTYPE_INT = "int"
 678 ENFORCEABLE_TYPES = frozenset([
 679   VTYPE_STRING,
 680   VTYPE_MAYBE_STRING,
 681   VTYPE_BOOL,
 682   VTYPE_SIZE,
 683   VTYPE_INT,
 684   ])
 685
 686 # Constant representing that the user does not specify any IP version
 687 IFACE_NO_IP_VERSION_SPECIFIED = 0
 688
 689 # HV parameter names (global namespace)
 690 HV_BOOT_ORDER = "boot_order"
 691 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
 692 HV_KVM_CDROM2_IMAGE_PATH = "cdrom2_image_path"
 693 HV_KVM_FLOPPY_IMAGE_PATH = "floppy_image_path"
 694 HV_NIC_TYPE = "nic_type"
 695 HV_DISK_TYPE = "disk_type"
 696 HV_KVM_CDROM_DISK_TYPE = "cdrom_disk_type"
 697 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
 698 HV_VNC_PASSWORD_FILE = "vnc_password_file"
 699 HV_VNC_TLS = "vnc_tls"
 700 HV_VNC_X509 = "vnc_x509_path"
 701 HV_VNC_X509_VERIFY = "vnc_x509_verify"
 702 HV_KVM_SPICE_BIND = "spice_bind"
 703 HV_KVM_SPICE_IP_VERSION = "spice_ip_version"
 704 HV_KVM_SPICE_PASSWORD_FILE = "spice_password_file"
 705 HV_KVM_SPICE_LOSSLESS_IMG_COMPR = "spice_image_compression"
 706 HV_KVM_SPICE_JPEG_IMG_COMPR = "spice_jpeg_wan_compression"
 707 HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR = "spice_zlib_glz_wan_compression"
 708 HV_KVM_SPICE_STREAMING_VIDEO_DETECTION = "spice_streaming_video"
 709 HV_KVM_SPICE_AUDIO_COMPR = "spice_playback_compression"
 710 HV_KVM_SPICE_USE_TLS = "spice_use_tls"
 711 HV_KVM_SPICE_TLS_CIPHERS = "spice_tls_ciphers"
 712 HV_KVM_SPICE_USE_VDAGENT = "spice_use_vdagent"
 713 HV_ACPI = "acpi"
 714 HV_PAE = "pae"
 715 HV_USE_BOOTLOADER = "use_bootloader"
 716 HV_BOOTLOADER_ARGS = "bootloader_args"
 717 HV_BOOTLOADER_PATH = "bootloader_path"
 718 HV_KERNEL_ARGS = "kernel_args"
 719 HV_KERNEL_PATH = "kernel_path"
 720 HV_INITRD_PATH = "initrd_path"
 721 HV_ROOT_PATH = "root_path"
 722 HV_SERIAL_CONSOLE = "serial_console"
 723 HV_USB_MOUSE = "usb_mouse"
 724 HV_KEYMAP = "keymap"
 725 HV_DEVICE_MODEL = "device_model"
 726 HV_INIT_SCRIPT = "init_script"
 727 HV_MIGRATION_PORT = "migration_port"
 728 HV_MIGRATION_BANDWIDTH = "migration_bandwidth"
 729 HV_MIGRATION_DOWNTIME = "migration_downtime"
 730 HV_MIGRATION_MODE = "migration_mode"
 731 HV_USE_LOCALTIME = "use_localtime"
 732 HV_DISK_CACHE = "disk_cache"
 733 HV_SECURITY_MODEL = "security_model"
 734 HV_SECURITY_DOMAIN = "security_domain"
 735 HV_KVM_FLAG = "kvm_flag"
 736 HV_VHOST_NET = "vhost_net"
 737 HV_KVM_USE_CHROOT = "use_chroot"
 738 HV_CPU_MASK = "cpu_mask"
 739 HV_MEM_PATH = "mem_path"
 740 HV_BLOCKDEV_PREFIX = "blockdev_prefix"
 741 HV_REBOOT_BEHAVIOR = "reboot_behavior"
 742
 743 HVS_PARAMETER_TYPES = {
 744   HV_BOOT_ORDER: VTYPE_STRING,
 745   HV_KVM_FLOPPY_IMAGE_PATH: VTYPE_STRING,
 746   HV_CDROM_IMAGE_PATH: VTYPE_STRING,
 747   HV_KVM_CDROM2_IMAGE_PATH: VTYPE_STRING,
 748   HV_NIC_TYPE: VTYPE_STRING,
 749   HV_DISK_TYPE: VTYPE_STRING,
 750   HV_KVM_CDROM_DISK_TYPE: VTYPE_STRING,
 751   HV_VNC_PASSWORD_FILE: VTYPE_STRING,
 752   HV_VNC_BIND_ADDRESS: VTYPE_STRING,
 753   HV_VNC_TLS: VTYPE_BOOL,
 754   HV_VNC_X509: VTYPE_STRING,
 755   HV_VNC_X509_VERIFY: VTYPE_BOOL,
 756   HV_KVM_SPICE_BIND: VTYPE_STRING,
 757   HV_KVM_SPICE_IP_VERSION: VTYPE_INT,
 758   HV_KVM_SPICE_PASSWORD_FILE: VTYPE_STRING,
 759   HV_KVM_SPICE_LOSSLESS_IMG_COMPR: VTYPE_STRING,
 760   HV_KVM_SPICE_JPEG_IMG_COMPR: VTYPE_STRING,
 761   HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: VTYPE_STRING,
 762   HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: VTYPE_STRING,
 763   HV_KVM_SPICE_AUDIO_COMPR: VTYPE_BOOL,
 764   HV_KVM_SPICE_USE_TLS: VTYPE_BOOL,
 765   HV_KVM_SPICE_TLS_CIPHERS: VTYPE_STRING,
 766   HV_KVM_SPICE_USE_VDAGENT: VTYPE_BOOL,
 767   HV_ACPI: VTYPE_BOOL,
 768   HV_PAE: VTYPE_BOOL,
 769   HV_USE_BOOTLOADER: VTYPE_BOOL,
 770   HV_BOOTLOADER_PATH: VTYPE_STRING,
 771   HV_BOOTLOADER_ARGS: VTYPE_STRING,
 772   HV_KERNEL_PATH: VTYPE_STRING,
 773   HV_KERNEL_ARGS: VTYPE_STRING,
 774   HV_INITRD_PATH: VTYPE_STRING,
 775   HV_ROOT_PATH: VTYPE_MAYBE_STRING,
 776   HV_SERIAL_CONSOLE: VTYPE_BOOL,
 777   HV_USB_MOUSE: VTYPE_STRING,
 778   HV_KEYMAP: VTYPE_STRING,
 779   HV_DEVICE_MODEL: VTYPE_STRING,
 780   HV_INIT_SCRIPT: VTYPE_STRING,
 781   HV_MIGRATION_PORT: VTYPE_INT,
 782   HV_MIGRATION_BANDWIDTH: VTYPE_INT,
 783   HV_MIGRATION_DOWNTIME: VTYPE_INT,
 784   HV_MIGRATION_MODE: VTYPE_STRING,
 785   HV_USE_LOCALTIME: VTYPE_BOOL,
 786   HV_DISK_CACHE: VTYPE_STRING,
 787   HV_SECURITY_MODEL: VTYPE_STRING,
 788   HV_SECURITY_DOMAIN: VTYPE_STRING,
 789   HV_KVM_FLAG: VTYPE_STRING,
 790   HV_VHOST_NET: VTYPE_BOOL,
 791   HV_KVM_USE_CHROOT: VTYPE_BOOL,
 792   HV_CPU_MASK: VTYPE_STRING,
 793   HV_MEM_PATH: VTYPE_STRING,
 794   HV_BLOCKDEV_PREFIX: VTYPE_STRING,
 795   HV_REBOOT_BEHAVIOR: VTYPE_STRING,
 796   }
 797
 798 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
 799
 800 # Backend parameter names
 801 BE_MEMORY = "memory"
 802 BE_VCPUS = "vcpus"
 803 BE_AUTO_BALANCE = "auto_balance"
 804
 805 BES_PARAMETER_TYPES = {
 806     BE_MEMORY: VTYPE_SIZE,
 807     BE_VCPUS: VTYPE_INT,
 808     BE_AUTO_BALANCE: VTYPE_BOOL,
 809     }
 810
 811 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 812
 813 # Node parameter names
 814 ND_OOB_PROGRAM = "oob_program"
 815
 816 NDS_PARAMETER_TYPES = {
 817     ND_OOB_PROGRAM: VTYPE_MAYBE_STRING,
 818     }
 819
 820 NDS_PARAMETERS = frozenset(NDS_PARAMETER_TYPES.keys())
 821
 822 # OOB supported commands
 823 OOB_POWER_ON = "power-on"
 824 OOB_POWER_OFF = "power-off"
 825 OOB_POWER_CYCLE = "power-cycle"
 826 OOB_POWER_STATUS = "power-status"
 827 OOB_HEALTH = "health"
 828
 829 OOB_COMMANDS = frozenset([
 830   OOB_POWER_ON,
 831   OOB_POWER_OFF,
 832   OOB_POWER_CYCLE,
 833   OOB_POWER_STATUS,
 834   OOB_HEALTH
 835   ])
 836
 837 OOB_POWER_STATUS_POWERED = "powered"
 838
 839 OOB_TIMEOUT = 60 # 60 seconds
 840 OOB_POWER_DELAY = 2.0 # 2 seconds
 841
 842 OOB_STATUS_OK = "OK"
 843 OOB_STATUS_WARNING = "WARNING"
 844 OOB_STATUS_CRITICAL = "CRITICAL"
 845 OOB_STATUS_UNKNOWN = "UNKNOWN"
 846
 847 OOB_STATUSES = frozenset([
 848   OOB_STATUS_OK,
 849   OOB_STATUS_WARNING,
 850   OOB_STATUS_CRITICAL,
 851   OOB_STATUS_UNKNOWN,
 852   ])
 853
 854 # Instance Parameters Profile
 855 PP_DEFAULT = "default"
 856
 857 # NIC_* constants are used inside the ganeti config
 858 NIC_MODE = "mode"
 859 NIC_LINK = "link"
 860
 861 NIC_MODE_BRIDGED = "bridged"
 862 NIC_MODE_ROUTED = "routed"
 863
 864 NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])
 865
 866 NICS_PARAMETER_TYPES = {
 867     NIC_MODE: VTYPE_STRING,
 868     NIC_LINK: VTYPE_STRING,
 869     }
 870
 871 NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
 872
 873 # IDISK_* constants are used in opcodes, to create/change disks
 874 IDISK_SIZE = "size"
 875 IDISK_MODE = "mode"
 876 IDISK_ADOPT = "adopt"
 877 IDISK_VG = "vg"
 878 IDISK_METAVG = "metavg"
 879 IDISK_PARAMS_TYPES = {
 880   IDISK_SIZE: VTYPE_SIZE,
 881   IDISK_MODE: VTYPE_STRING,
 882   IDISK_ADOPT: VTYPE_STRING,
 883   IDISK_VG: VTYPE_STRING,
 884   IDISK_METAVG: VTYPE_STRING,
 885   }
 886 IDISK_PARAMS = frozenset(IDISK_PARAMS_TYPES.keys())
 887
 888 # INIC_* constants are used in opcodes, to create/change nics
 889 INIC_MAC = "mac"
 890 INIC_IP = "ip"
 891 INIC_MODE = "mode"
 892 INIC_LINK = "link"
 893 INIC_PARAMS_TYPES = {
 894   INIC_IP: VTYPE_MAYBE_STRING,
 895   INIC_LINK: VTYPE_STRING,
 896   INIC_MAC: VTYPE_STRING,
 897   INIC_MODE: VTYPE_STRING,
 898   }
 899 INIC_PARAMS = frozenset(INIC_PARAMS_TYPES.keys())
 900
 901 # Hypervisor constants
 902 HT_XEN_PVM = "xen-pvm"
 903 HT_FAKE = "fake"
 904 HT_XEN_HVM = "xen-hvm"
 905 HT_KVM = "kvm"
 906 HT_CHROOT = "chroot"
 907 HT_LXC = "lxc"
 908 HYPER_TYPES = frozenset([
 909   HT_XEN_PVM,
 910   HT_FAKE,
 911   HT_XEN_HVM,
 912   HT_KVM,
 913   HT_CHROOT,
 914   HT_LXC,
 915   ])
 916 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
 917
 918 VNC_BASE_PORT = 5900
 919 VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
 920 VNC_DEFAULT_BIND_ADDRESS = IP4_ADDRESS_ANY
 921
 922 # NIC types
 923 HT_NIC_RTL8139 = "rtl8139"
 924 HT_NIC_NE2K_PCI = "ne2k_pci"
 925 HT_NIC_NE2K_ISA = "ne2k_isa"
 926 HT_NIC_I82551 = "i82551"
 927 HT_NIC_I85557B = "i82557b"
 928 HT_NIC_I8259ER = "i82559er"
 929 HT_NIC_PCNET = "pcnet"
 930 HT_NIC_E1000 = "e1000"
 931 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
 932
 933 HT_HVM_VALID_NIC_TYPES = frozenset([
 934   HT_NIC_RTL8139,
 935   HT_NIC_NE2K_PCI,
 936   HT_NIC_E1000,
 937   HT_NIC_NE2K_ISA,
 938   HT_NIC_PARAVIRTUAL
 939   ])
 940 HT_KVM_VALID_NIC_TYPES = frozenset([
 941   HT_NIC_RTL8139,
 942   HT_NIC_NE2K_PCI,
 943   HT_NIC_NE2K_ISA,
 944   HT_NIC_I82551,
 945   HT_NIC_I85557B,
 946   HT_NIC_I8259ER,
 947   HT_NIC_PCNET,
 948   HT_NIC_E1000,
 949   HT_NIC_PARAVIRTUAL
 950   ])
 951
 952 # Disk types
 953 HT_DISK_IOEMU = "ioemu"
 954 HT_DISK_IDE = "ide"
 955 HT_DISK_SCSI = "scsi"
 956 HT_DISK_SD = "sd"
 957 HT_DISK_MTD = "mtd"
 958 HT_DISK_PFLASH = "pflash"
 959
 960 HT_CACHE_DEFAULT = "default"
 961 HT_CACHE_NONE = "none"
 962 HT_CACHE_WTHROUGH = "writethrough"
 963 HT_CACHE_WBACK = "writeback"
 964 HT_VALID_CACHE_TYPES = frozenset([
 965   HT_CACHE_DEFAULT,
 966   HT_CACHE_NONE,
 967   HT_CACHE_WTHROUGH,
 968   HT_CACHE_WBACK
 969   ])
 970
 971 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
 972 HT_KVM_VALID_DISK_TYPES = frozenset([
 973   HT_DISK_PARAVIRTUAL,
 974   HT_DISK_IDE,
 975   HT_DISK_SCSI,
 976   HT_DISK_SD,
 977   HT_DISK_MTD,
 978   HT_DISK_PFLASH
 979   ])
 980
 981 # Mouse types:
 982 HT_MOUSE_MOUSE = "mouse"
 983 HT_MOUSE_TABLET = "tablet"
 984
 985 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
 986
 987 # Boot order
 988 HT_BO_FLOPPY = "floppy"
 989 HT_BO_CDROM = "cdrom"
 990 HT_BO_DISK = "disk"
 991 HT_BO_NETWORK = "network"
 992
 993 HT_KVM_VALID_BO_TYPES = frozenset([
 994   HT_BO_FLOPPY,
 995   HT_BO_CDROM,
 996   HT_BO_DISK,
 997   HT_BO_NETWORK
 998   ])
 999
1000 # SPICE lossless image compression options
1001 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_GLZ = "auto_glz"
1002 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_LZ = "auto_lz"
1003 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_QUIC = "quic"
1004 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_GLZ = "glz"
1005 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_LZ = "lz"
1006 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_OFF = "off"
1007
1008 HT_KVM_SPICE_VALID_LOSSLESS_IMG_COMPR_OPTIONS = frozenset([
1009   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_GLZ,
1010   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_LZ,
1011   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_QUIC,
1012   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_GLZ,
1013   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_LZ,
1014   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_OFF,
1015   ])
1016
1017 # SPICE lossy image compression options (valid for both jpeg and zlib-glz)
1018 HT_KVM_SPICE_LOSSY_IMG_COMPR_AUTO = "auto"
1019 HT_KVM_SPICE_LOSSY_IMG_COMPR_NEVER = "never"
1020 HT_KVM_SPICE_LOSSY_IMG_COMPR_ALWAYS = "always"
1021
1022 HT_KVM_SPICE_VALID_LOSSY_IMG_COMPR_OPTIONS = frozenset([
1023   HT_KVM_SPICE_LOSSY_IMG_COMPR_AUTO,
1024   HT_KVM_SPICE_LOSSY_IMG_COMPR_NEVER,
1025   HT_KVM_SPICE_LOSSY_IMG_COMPR_ALWAYS,
1026   ])
1027
1028 # SPICE video stream detection
1029 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_OFF = "off"
1030 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_ALL = "all"
1031 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_FILTER = "filter"
1032
1033 HT_KVM_SPICE_VALID_VIDEO_STREAM_DETECTION_OPTIONS = frozenset([
1034   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_OFF,
1035   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_ALL,
1036   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_FILTER,
1037   ])
1038
1039 # Security models
1040 HT_SM_NONE = "none"
1041 HT_SM_USER = "user"
1042 HT_SM_POOL = "pool"
1043
1044 HT_KVM_VALID_SM_TYPES = frozenset([HT_SM_NONE, HT_SM_USER, HT_SM_POOL])
1045
1046 # Kvm flag values
1047 HT_KVM_ENABLED = "enabled"
1048 HT_KVM_DISABLED = "disabled"
1049
1050 HT_KVM_FLAG_VALUES = frozenset([HT_KVM_ENABLED, HT_KVM_DISABLED])
1051
1052 # Migration type
1053 HT_MIGRATION_LIVE = "live"
1054 HT_MIGRATION_NONLIVE = "non-live"
1055 HT_MIGRATION_MODES = frozenset([HT_MIGRATION_LIVE, HT_MIGRATION_NONLIVE])
1056
1057 # Cluster Verify steps
1058 VERIFY_NPLUSONE_MEM = "nplusone_mem"
1059 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
1060
1061 # Node verify constants
1062 NV_DRBDHELPER = "drbd-helper"
1063 NV_DRBDLIST = "drbd-list"
1064 NV_FILELIST = "filelist"
1065 NV_HVINFO = "hvinfo"
1066 NV_HYPERVISOR = "hypervisor"
1067 NV_HVPARAMS = "hvparms"
1068 NV_INSTANCELIST = "instancelist"
1069 NV_LVLIST = "lvlist"
1070 NV_MASTERIP = "master-ip"
1071 NV_NODELIST = "nodelist"
1072 NV_NODENETTEST = "node-net-test"
1073 NV_NODESETUP = "nodesetup"
1074 NV_OSLIST = "oslist"
1075 NV_PVLIST = "pvlist"
1076 NV_TIME = "time"
1077 NV_VERSION = "version"
1078 NV_VGLIST = "vglist"
1079 NV_VMNODES = "vmnodes"
1080 NV_OOB_PATHS = "oob-paths"
1081 NV_BRIDGES = "bridges"
1082
1083 # Instance status
1084 INSTST_RUNNING = "running"
1085 INSTST_ADMINDOWN = "ADMIN_down"
1086 INSTST_NODEOFFLINE = "ERROR_nodeoffline"
1087 INSTST_NODEDOWN = "ERROR_nodedown"
1088 INSTST_WRONGNODE = "ERROR_wrongnode"
1089 INSTST_ERRORUP = "ERROR_up"
1090 INSTST_ERRORDOWN = "ERROR_down"
1091 INSTST_ALL = frozenset([
1092   INSTST_RUNNING,
1093   INSTST_ADMINDOWN,
1094   INSTST_NODEOFFLINE,
1095   INSTST_NODEDOWN,
1096   INSTST_WRONGNODE,
1097   INSTST_ERRORUP,
1098   INSTST_ERRORDOWN,
1099   ])
1100
1101 # Node roles
1102 NR_REGULAR = "R"
1103 NR_MASTER = "M"
1104 NR_MCANDIDATE = "C"
1105 NR_DRAINED = "D"
1106 NR_OFFLINE = "O"
1107 NR_ALL = frozenset([
1108   NR_REGULAR,
1109   NR_MASTER,
1110   NR_MCANDIDATE,
1111   NR_DRAINED,
1112   NR_OFFLINE,
1113   ])
1114
1115 # SSL certificate check constants (in days)
1116 SSL_CERT_EXPIRATION_WARN = 30
1117 SSL_CERT_EXPIRATION_ERROR = 7
1118
1119 # Allocator framework constants
1120 IALLOCATOR_VERSION = 2
1121 IALLOCATOR_DIR_IN = "in"
1122 IALLOCATOR_DIR_OUT = "out"
1123 VALID_IALLOCATOR_DIRECTIONS = frozenset([
1124   IALLOCATOR_DIR_IN,
1125   IALLOCATOR_DIR_OUT,
1126   ])
1127 IALLOCATOR_MODE_ALLOC = "allocate"
1128 IALLOCATOR_MODE_RELOC = "relocate"
1129 IALLOCATOR_MODE_CHG_GROUP = "change-group"
1130 IALLOCATOR_MODE_NODE_EVAC = "node-evacuate"
1131 VALID_IALLOCATOR_MODES = frozenset([
1132   IALLOCATOR_MODE_ALLOC,
1133   IALLOCATOR_MODE_RELOC,
1134   IALLOCATOR_MODE_CHG_GROUP,
1135   IALLOCATOR_MODE_NODE_EVAC,
1136   ])
1137 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
1138
1139 IALLOCATOR_NEVAC_PRI = "primary-only"
1140 IALLOCATOR_NEVAC_SEC = "secondary-only"
1141 IALLOCATOR_NEVAC_ALL = "all"
1142 IALLOCATOR_NEVAC_MODES = frozenset([
1143   IALLOCATOR_NEVAC_PRI,
1144   IALLOCATOR_NEVAC_SEC,
1145   IALLOCATOR_NEVAC_ALL,
1146   ])
1147
1148 # Job queue
1149 JOB_QUEUE_VERSION = 1
1150 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
1151 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
1152 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
1153 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
1154 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
1155 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
1156 JOB_QUEUE_DIRS = [QUEUE_DIR, JOB_QUEUE_ARCHIVE_DIR]
1157 JOB_QUEUE_DIRS_MODE = SECURE_DIR_MODE
1158
1159 JOB_ID_TEMPLATE = r"\d+"
1160 JOB_FILE_RE = re.compile(r"^job-(%s)$" % JOB_ID_TEMPLATE)
1161
1162 # unchanged job return
1163 JOB_NOTCHANGED = "nochange"
1164
1165 # Job status
1166 JOB_STATUS_QUEUED = "queued"
1167 JOB_STATUS_WAITING = "waiting"
1168 JOB_STATUS_CANCELING = "canceling"
1169 JOB_STATUS_RUNNING = "running"
1170 JOB_STATUS_CANCELED = "canceled"
1171 JOB_STATUS_SUCCESS = "success"
1172 JOB_STATUS_ERROR = "error"
1173 JOBS_FINALIZED = frozenset([
1174   JOB_STATUS_CANCELED,
1175   JOB_STATUS_SUCCESS,
1176   JOB_STATUS_ERROR,
1177   ])
1178 JOB_STATUS_ALL = frozenset([
1179   JOB_STATUS_QUEUED,
1180   JOB_STATUS_WAITING,
1181   JOB_STATUS_CANCELING,
1182   JOB_STATUS_RUNNING,
1183   ]) | JOBS_FINALIZED
1184
1185 # OpCode status
1186 # not yet finalized
1187 OP_STATUS_QUEUED = "queued"
1188 OP_STATUS_WAITING = "waiting"
1189 OP_STATUS_CANCELING = "canceling"
1190 OP_STATUS_RUNNING = "running"
1191 # finalized
1192 OP_STATUS_CANCELED = "canceled"
1193 OP_STATUS_SUCCESS = "success"
1194 OP_STATUS_ERROR = "error"
1195 OPS_FINALIZED = frozenset([
1196   OP_STATUS_CANCELED,
1197   OP_STATUS_SUCCESS,
1198   OP_STATUS_ERROR
1199   ])
1200
1201 # OpCode priority
1202 OP_PRIO_LOWEST = +19
1203 OP_PRIO_HIGHEST = -20
1204
1205 OP_PRIO_LOW = +10
1206 OP_PRIO_NORMAL = 0
1207 OP_PRIO_HIGH = -10
1208
1209 OP_PRIO_SUBMIT_VALID = frozenset([
1210   OP_PRIO_LOW,
1211   OP_PRIO_NORMAL,
1212   OP_PRIO_HIGH,
1213   ])
1214
1215 OP_PRIO_DEFAULT = OP_PRIO_NORMAL
1216
1217 # Execution log types
1218 ELOG_MESSAGE = "message"
1219 ELOG_PROGRESS = "progress"
1220 ELOG_REMOTE_IMPORT = "remote-import"
1221 ELOG_JQUEUE_TEST = "jqueue-test"
1222
1223 # /etc/hosts modification
1224 ETC_HOSTS_ADD = "add"
1225 ETC_HOSTS_REMOVE = "remove"
1226
1227 # Job queue test
1228 JQT_MSGPREFIX = "TESTMSG="
1229 JQT_EXPANDNAMES = "expandnames"
1230 JQT_EXEC = "exec"
1231 JQT_LOGMSG = "logmsg"
1232 JQT_STARTMSG = "startmsg"
1233 JQT_ALL = frozenset([
1234   JQT_EXPANDNAMES,
1235   JQT_EXEC,
1236   JQT_LOGMSG,
1237   JQT_STARTMSG,
1238   ])
1239
1240 # Query resources
1241 QR_INSTANCE = "instance"
1242 QR_NODE = "node"
1243 QR_LOCK = "lock"
1244 QR_GROUP = "group"
1245 QR_OS = "os"
1246
1247 #: List of resources which can be queried using L{opcodes.OpQuery}
1248 QR_VIA_OP = frozenset([QR_INSTANCE, QR_NODE, QR_GROUP, QR_OS])
1249
1250 #: List of resources which can be queried using Local UniX Interface
1251 QR_VIA_LUXI = QR_VIA_OP.union([
1252   QR_LOCK,
1253   ])
1254
1255 #: List of resources which can be queried using RAPI
1256 QR_VIA_RAPI = QR_VIA_LUXI
1257
1258 # Query field types
1259 QFT_UNKNOWN = "unknown"
1260 QFT_TEXT = "text"
1261 QFT_BOOL = "bool"
1262 QFT_NUMBER = "number"
1263 QFT_UNIT = "unit"
1264 QFT_TIMESTAMP = "timestamp"
1265 QFT_OTHER = "other"
1266
1267 #: All query field types
1268 QFT_ALL = frozenset([
1269   QFT_UNKNOWN,
1270   QFT_TEXT,
1271   QFT_BOOL,
1272   QFT_NUMBER,
1273   QFT_UNIT,
1274   QFT_TIMESTAMP,
1275   QFT_OTHER,
1276   ])
1277
1278 # Query result field status (don't change or reuse values as they're used by
1279 # clients)
1280 #: Normal field status
1281 RS_NORMAL = 0
1282 #: Unknown field
1283 RS_UNKNOWN = 1
1284 #: No data (e.g. RPC error), can be used instead of L{RS_OFFLINE}
1285 RS_NODATA = 2
1286 #: Value unavailable/unsupported for item; if this field is supported
1287 #: but we cannot get the data for the moment, RS_NODATA or
1288 #: RS_OFFLINE should be used
1289 RS_UNAVAIL = 3
1290 #: Resource marked offline
1291 RS_OFFLINE = 4
1292
1293 RS_ALL = frozenset([
1294   RS_NORMAL,
1295   RS_UNKNOWN,
1296   RS_NODATA,
1297   RS_UNAVAIL,
1298   RS_OFFLINE,
1299   ])
1300
1301 #: Dictionary with special field cases and their verbose/terse formatting
1302 RSS_DESCRIPTION = {
1303   RS_UNKNOWN: ("(unknown)", "??"),
1304   RS_NODATA: ("(nodata)", "?"),
1305   RS_OFFLINE: ("(offline)", "*"),
1306   RS_UNAVAIL: ("(unavail)", "-"),
1307   }
1308
1309 # max dynamic devices
1310 MAX_NICS = 8
1311 MAX_DISKS = 16
1312
1313 # SSCONF keys
1314 SS_CLUSTER_NAME = "cluster_name"
1315 SS_CLUSTER_TAGS = "cluster_tags"
1316 SS_FILE_STORAGE_DIR = "file_storage_dir"
1317 SS_SHARED_FILE_STORAGE_DIR = "shared_file_storage_dir"
1318 SS_MASTER_CANDIDATES = "master_candidates"
1319 SS_MASTER_CANDIDATES_IPS = "master_candidates_ips"
1320 SS_MASTER_IP = "master_ip"
1321 SS_MASTER_NETDEV = "master_netdev"
1322 SS_MASTER_NODE = "master_node"
1323 SS_NODE_LIST = "node_list"
1324 SS_NODE_PRIMARY_IPS = "node_primary_ips"
1325 SS_NODE_SECONDARY_IPS = "node_secondary_ips"
1326 SS_OFFLINE_NODES = "offline_nodes"
1327 SS_ONLINE_NODES = "online_nodes"
1328 SS_PRIMARY_IP_FAMILY = "primary_ip_family"
1329 SS_INSTANCE_LIST = "instance_list"
1330 SS_RELEASE_VERSION = "release_version"
1331 SS_HYPERVISOR_LIST = "hypervisor_list"
1332 SS_MAINTAIN_NODE_HEALTH = "maintain_node_health"
1333 SS_UID_POOL = "uid_pool"
1334 SS_NODEGROUPS = "nodegroups"
1335
1336 SS_FILE_PERMS = 0444
1337
1338 # cluster wide default parameters
1339 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
1340
1341 HVC_DEFAULTS = {
1342   HT_XEN_PVM: {
1343     HV_USE_BOOTLOADER: False,
1344     HV_BOOTLOADER_PATH: XEN_BOOTLOADER,
1345     HV_BOOTLOADER_ARGS: "",
1346     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU",
1347     HV_INITRD_PATH: "",
1348     HV_ROOT_PATH: "/dev/sda1",
1349     HV_KERNEL_ARGS: "ro",
1350     HV_MIGRATION_PORT: 8002,
1351     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1352     HV_BLOCKDEV_PREFIX: "sd",
1353     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1354     HV_CPU_MASK: CPU_PINNING_ALL,
1355     },
1356   HT_XEN_HVM: {
1357     HV_BOOT_ORDER: "cd",
1358     HV_CDROM_IMAGE_PATH: "",
1359     HV_NIC_TYPE: HT_NIC_RTL8139,
1360     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1361     HV_VNC_BIND_ADDRESS: IP4_ADDRESS_ANY,
1362     HV_VNC_PASSWORD_FILE: VNC_PASSWORD_FILE,
1363     HV_ACPI: True,
1364     HV_PAE: True,
1365     HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
1366     HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
1367     HV_MIGRATION_PORT: 8002,
1368     HV_MIGRATION_MODE: HT_MIGRATION_NONLIVE,
1369     HV_USE_LOCALTIME: False,
1370     HV_BLOCKDEV_PREFIX: "hd",
1371     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1372     HV_CPU_MASK: CPU_PINNING_ALL,
1373     },
1374   HT_KVM: {
1375     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU",
1376     HV_INITRD_PATH: "",
1377     HV_KERNEL_ARGS: "ro",
1378     HV_ROOT_PATH: "/dev/vda1",
1379     HV_ACPI: True,
1380     HV_SERIAL_CONSOLE: True,
1381     HV_VNC_BIND_ADDRESS: "",
1382     HV_VNC_TLS: False,
1383     HV_VNC_X509: "",
1384     HV_VNC_X509_VERIFY: False,
1385     HV_VNC_PASSWORD_FILE: "",
1386     HV_KVM_SPICE_BIND: "",
1387     HV_KVM_SPICE_IP_VERSION: IFACE_NO_IP_VERSION_SPECIFIED,
1388     HV_KVM_SPICE_PASSWORD_FILE: "",
1389     HV_KVM_SPICE_LOSSLESS_IMG_COMPR: "",
1390     HV_KVM_SPICE_JPEG_IMG_COMPR: "",
1391     HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: "",
1392     HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: "",
1393     HV_KVM_SPICE_AUDIO_COMPR: True,
1394     HV_KVM_SPICE_USE_TLS: False,
1395     HV_KVM_SPICE_TLS_CIPHERS: OPENSSL_CIPHERS,
1396     HV_KVM_SPICE_USE_VDAGENT: True,
1397     HV_KVM_FLOPPY_IMAGE_PATH: "",
1398     HV_CDROM_IMAGE_PATH: "",
1399     HV_KVM_CDROM2_IMAGE_PATH: "",
1400     HV_BOOT_ORDER: HT_BO_DISK,
1401     HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
1402     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1403     HV_KVM_CDROM_DISK_TYPE: "",
1404     HV_USB_MOUSE: "",
1405     HV_KEYMAP: "",
1406     HV_MIGRATION_PORT: 8102,
1407     HV_MIGRATION_BANDWIDTH: 32, # MiB/s
1408     HV_MIGRATION_DOWNTIME: 30,  # ms
1409     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1410     HV_USE_LOCALTIME: False,
1411     HV_DISK_CACHE: HT_CACHE_DEFAULT,
1412     HV_SECURITY_MODEL: HT_SM_NONE,
1413     HV_SECURITY_DOMAIN: "",
1414     HV_KVM_FLAG: "",
1415     HV_VHOST_NET: False,
1416     HV_KVM_USE_CHROOT: False,
1417     HV_MEM_PATH: "",
1418     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1419     HV_CPU_MASK: CPU_PINNING_ALL,
1420     },
1421   HT_FAKE: {
1422     },
1423   HT_CHROOT: {
1424     HV_INIT_SCRIPT: "/ganeti-chroot",
1425     },
1426   HT_LXC: {
1427     HV_CPU_MASK: "",
1428     },
1429   }
1430
1431 HVC_GLOBALS = frozenset([
1432   HV_MIGRATION_PORT,
1433   HV_MIGRATION_BANDWIDTH,
1434   HV_MIGRATION_MODE,
1435   ])
1436
1437 BEC_DEFAULTS = {
1438   BE_MEMORY: 128,
1439   BE_VCPUS: 1,
1440   BE_AUTO_BALANCE: True,
1441   }
1442
1443 NDC_DEFAULTS = {
1444   ND_OOB_PROGRAM: None,
1445   }
1446
1447 NICC_DEFAULTS = {
1448   NIC_MODE: NIC_MODE_BRIDGED,
1449   NIC_LINK: DEFAULT_BRIDGE,
1450   }
1451
1452 MASTER_POOL_SIZE_DEFAULT = 10
1453
1454 CONFD_PROTOCOL_VERSION = 1
1455
1456 CONFD_REQ_PING = 0
1457 CONFD_REQ_NODE_ROLE_BYNAME = 1
1458 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP = 2
1459 CONFD_REQ_CLUSTER_MASTER = 3
1460 CONFD_REQ_NODE_PIP_LIST = 4
1461 CONFD_REQ_MC_PIP_LIST = 5
1462 CONFD_REQ_INSTANCES_IPS_LIST = 6
1463
1464 # Confd request query fields. These are used to narrow down queries.
1465 # These must be strings rather than integers, because json-encoding
1466 # converts them to strings anyway, as they're used as dict-keys.
1467 CONFD_REQQ_LINK = "0"
1468 CONFD_REQQ_IP = "1"
1469 CONFD_REQQ_IPLIST = "2"
1470 CONFD_REQQ_FIELDS = "3"
1471
1472 CONFD_REQFIELD_NAME = "0"
1473 CONFD_REQFIELD_IP = "1"
1474 CONFD_REQFIELD_MNODE_PIP = "2"
1475
1476 CONFD_REQS = frozenset([
1477   CONFD_REQ_PING,
1478   CONFD_REQ_NODE_ROLE_BYNAME,
1479   CONFD_REQ_NODE_PIP_BY_INSTANCE_IP,
1480   CONFD_REQ_CLUSTER_MASTER,
1481   CONFD_REQ_NODE_PIP_LIST,
1482   CONFD_REQ_MC_PIP_LIST,
1483   CONFD_REQ_INSTANCES_IPS_LIST,
1484   ])
1485
1486 CONFD_REPL_STATUS_OK = 0
1487 CONFD_REPL_STATUS_ERROR = 1
1488 CONFD_REPL_STATUS_NOTIMPLEMENTED = 2
1489
1490 CONFD_REPL_STATUSES = frozenset([
1491   CONFD_REPL_STATUS_OK,
1492   CONFD_REPL_STATUS_ERROR,
1493   CONFD_REPL_STATUS_NOTIMPLEMENTED,
1494   ])
1495
1496 (CONFD_NODE_ROLE_MASTER,
1497  CONFD_NODE_ROLE_CANDIDATE,
1498  CONFD_NODE_ROLE_OFFLINE,
1499  CONFD_NODE_ROLE_DRAINED,
1500  CONFD_NODE_ROLE_REGULAR,
1501  ) = range(5)
1502
1503 # A few common errors for confd
1504 CONFD_ERROR_UNKNOWN_ENTRY = 1
1505 CONFD_ERROR_INTERNAL = 2
1506 CONFD_ERROR_ARGUMENT = 3
1507
1508 # Each request is "salted" by the current timestamp.
1509 # This constants decides how many seconds of skew to accept.
1510 # TODO: make this a default and allow the value to be more configurable
1511 CONFD_MAX_CLOCK_SKEW = 2 * NODE_MAX_CLOCK_SKEW
1512
1513 # When we haven't reloaded the config for more than this amount of seconds, we
1514 # force a test to see if inotify is betraying us.
1515 CONFD_CONFIG_RELOAD_TIMEOUT = 60
1516
1517 # If we receive more than one update in this amount of seconds, we move to
1518 # polling every RATELIMIT seconds, rather than relying on inotify, to be able
1519 # to serve more requests.
1520 CONFD_CONFIG_RELOAD_RATELIMIT = 2
1521
1522 # Magic number prepended to all confd queries.
1523 # This allows us to distinguish different types of confd protocols and handle
1524 # them. For example by changing this we can move the whole payload to be
1525 # compressed, or move away from json.
1526 CONFD_MAGIC_FOURCC = "plj0"
1527
1528 # By default a confd request is sent to the minimum between this number and all
1529 # MCs. 6 was chosen because even in the case of a disastrous 50% response rate,
1530 # we should have enough answers to be able to compare more than one.
1531 CONFD_DEFAULT_REQ_COVERAGE = 6
1532
1533 # Timeout in seconds to expire pending query request in the confd client
1534 # library. We don't actually expect any answer more than 10 seconds after we
1535 # sent a request.
1536 CONFD_CLIENT_EXPIRE_TIMEOUT = 10
1537
1538 # Maximum UDP datagram size.
1539 # On IPv4: 64K - 20 (ip header size) - 8 (udp header size) = 65507
1540 # On IPv6: 64K - 40 (ip6 header size) - 8 (udp header size) = 65487
1541 #   (assuming we can't use jumbo frames)
1542 # We just set this to 60K, which should be enough
1543 MAX_UDP_DATA_SIZE = 61440
1544
1545 # User-id pool minimum/maximum acceptable user-ids.
1546 UIDPOOL_UID_MIN = 0
1547 UIDPOOL_UID_MAX = 2 ** 32 - 1 # Assuming 32 bit user-ids
1548
1549 # Name or path of the pgrep command
1550 PGREP = "pgrep"
1551
1552 # Name of the node group that gets created at cluster init or upgrade
1553 INITIAL_NODE_GROUP_NAME = "default"
1554
1555 # Possible values for NodeGroup.alloc_policy
1556 ALLOC_POLICY_PREFERRED = "preferred"
1557 ALLOC_POLICY_LAST_RESORT = "last_resort"
1558 ALLOC_POLICY_UNALLOCABLE = "unallocable"
1559 VALID_ALLOC_POLICIES = [
1560   ALLOC_POLICY_PREFERRED,
1561   ALLOC_POLICY_LAST_RESORT,
1562   ALLOC_POLICY_UNALLOCABLE,
1563   ]
1564
1565 # Temporary external/shared storage parameters
1566 BLOCKDEV_DRIVER_MANUAL = "manual"
1567
1568 # Whether htools was enabled at compilation time
1569 HTOOLS = _autoconf.HTOOLS
1570 # The hail iallocator
1571 IALLOC_HAIL = "hail"