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 import socket
  26
  27 from ganeti import _autoconf
  28 from ganeti import _vcsversion
  29
  30 # various versions
  31 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
  32 OS_API_V10 = 10
  33 OS_API_V15 = 15
  34 OS_API_V20 = 20
  35 OS_API_VERSIONS = frozenset([OS_API_V10, OS_API_V15, OS_API_V20])
  36 VCS_VERSION = _vcsversion.VCS_VERSION
  37 EXPORT_VERSION = 0
  38 RAPI_VERSION = 2
  39
  40
  41 # Format for CONFIG_VERSION:
  42 #   01 03 0123 = 01030123
  43 #   ^^ ^^ ^^^^
  44 #   |  |  + Configuration version/revision
  45 #   |  + Minor version
  46 #   + Major version
  47 #
  48 # It stored as an integer. Make sure not to write an octal number.
  49
  50 # BuildVersion and SplitVersion must be in here because we can't import other
  51 # modules. The cfgupgrade tool must be able to read and write version numbers
  52 # and thus requires these functions. To avoid code duplication, they're kept in
  53 # here.
  54
  55 def BuildVersion(major, minor, revision):
  56   """Calculates int version number from major, minor and revision numbers.
  57
  58   Returns: int representing version number
  59
  60   """
  61   assert isinstance(major, int)
  62   assert isinstance(minor, int)
  63   assert isinstance(revision, int)
  64   return (1000000 * major +
  65             10000 * minor +
  66                 1 * revision)
  67
  68
  69 def SplitVersion(version):
  70   """Splits version number stored in an int.
  71
  72   Returns: tuple; (major, minor, revision)
  73
  74   """
  75   assert isinstance(version, int)
  76
  77   (major, remainder) = divmod(version, 1000000)
  78   (minor, revision) = divmod(remainder, 10000)
  79
  80   return (major, minor, revision)
  81
  82
  83 CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
  84 CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
  85 CONFIG_REVISION = 0
  86 CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
  87
  88 #: RPC protocol version
  89 PROTOCOL_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, 0)
  90
  91 # user separation
  92 DAEMONS_GROUP = _autoconf.DAEMONS_GROUP
  93 ADMIN_GROUP = _autoconf.ADMIN_GROUP
  94 MASTERD_USER = _autoconf.MASTERD_USER
  95 MASTERD_GROUP = _autoconf.MASTERD_GROUP
  96 RAPI_USER = _autoconf.RAPI_USER
  97 RAPI_GROUP = _autoconf.RAPI_GROUP
  98 CONFD_USER = _autoconf.CONFD_USER
  99 CONFD_GROUP = _autoconf.CONFD_GROUP
 100 NODED_USER = _autoconf.NODED_USER
 101 NODED_GROUP = _autoconf.NODED_GROUP
 102
 103 # cpu pinning separators and constants
 104 CPU_PINNING_SEP = ":"
 105 CPU_PINNING_ALL = "all"
 106 # internal representation of "all"
 107 CPU_PINNING_ALL_VAL = -1
 108 # one "all" entry in a CPU list means CPU pinning is off
 109 CPU_PINNING_OFF = [CPU_PINNING_ALL_VAL]
 110
 111 # A Xen-specific implementation detail - there is no way to actually say
 112 # "use any cpu for pinning" in a Xen configuration file, as opposed to the
 113 # command line, where you can say "xm vcpu-pin <domain> <vcpu> all".
 114 # The workaround used in Xen is "0-63" (see source code function
 115 # xm_vcpu_pin in <xen-source>/tools/python/xen/xm/main.py).
 116 # To support future changes, the following constant is treated as a
 117 # blackbox string that simply means use-any-cpu-for-pinning-under-xen.
 118 CPU_PINNING_ALL_XEN = "0-63"
 119
 120 # A KVM-specific implementation detail - the following value is used
 121 # to set CPU affinity to all processors (#0 through #31), per taskset
 122 # man page.
 123 # FIXME: This only works for machines with up to 32 CPU cores
 124 CPU_PINNING_ALL_KVM = 0xFFFFFFFF
 125
 126 # Wipe
 127 DD_CMD = "dd"
 128 WIPE_BLOCK_SIZE = 1024 ** 2
 129 MAX_WIPE_CHUNK = 1024 # 1GB
 130 MIN_WIPE_CHUNK_PERCENT = 10
 131
 132
 133 # file paths
 134 DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti"
 135 RUN_DIR = _autoconf.LOCALSTATEDIR + "/run"
 136 RUN_GANETI_DIR = RUN_DIR + "/ganeti"
 137 BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache"
 138 DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks"
 139 RUN_DIRS_MODE = 0775
 140 SOCKET_DIR = RUN_GANETI_DIR + "/socket"
 141 SECURE_DIR_MODE = 0700
 142 SECURE_FILE_MODE = 0600
 143 CRYPTO_KEYS_DIR = RUN_GANETI_DIR + "/crypto"
 144 IMPORT_EXPORT_DIR = RUN_GANETI_DIR + "/import-export"
 145 ADOPTABLE_BLOCKDEV_ROOT = "/dev/disk/"
 146 LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock"
 147 SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock"
 148 # User-id pool lock directory
 149 # The user-ids that are in use have a corresponding lock file in this directory
 150 UIDPOOL_LOCKDIR = RUN_GANETI_DIR + "/uid-pool"
 151 CLUSTER_CONF_FILE = DATA_DIR + "/config.data"
 152 NODED_CERT_FILE = DATA_DIR + "/server.pem"
 153 RAPI_CERT_FILE = DATA_DIR + "/rapi.pem"
 154 CONFD_HMAC_KEY = DATA_DIR + "/hmac.key"
 155 SPICE_CERT_FILE = DATA_DIR + "/spice.pem"
 156 SPICE_CACERT_FILE = DATA_DIR + "/spice-ca.pem"
 157 CLUSTER_DOMAIN_SECRET_FILE = DATA_DIR + "/cluster-domain-secret"
 158 INSTANCE_STATUS_FILE = RUN_GANETI_DIR + "/instance-status"
 159 SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts"
 160 RAPI_USERS_FILE = DATA_DIR + "/rapi/users"
 161 QUEUE_DIR = DATA_DIR + "/queue"
 162 DAEMON_UTIL = _autoconf.PKGLIBDIR + "/daemon-util"
 163 SETUP_SSH = _autoconf.TOOLSDIR + "/setup-ssh"
 164 KVM_IFUP = _autoconf.PKGLIBDIR + "/kvm-ifup"
 165 KVM_CONSOLE_WRAPPER = _autoconf.PKGLIBDIR + "/tools/kvm-console-wrapper"
 166 XM_CONSOLE_WRAPPER = _autoconf.PKGLIBDIR + "/tools/xm-console-wrapper"
 167 ETC_HOSTS = "/etc/hosts"
 168 DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
 169 DEFAULT_SHARED_FILE_STORAGE_DIR = _autoconf.SHARED_FILE_STORAGE_DIR
 170 ENABLE_FILE_STORAGE = _autoconf.ENABLE_FILE_STORAGE
 171 ENABLE_SHARED_FILE_STORAGE = _autoconf.ENABLE_SHARED_FILE_STORAGE
 172 SYSCONFDIR = _autoconf.SYSCONFDIR
 173 TOOLSDIR = _autoconf.TOOLSDIR
 174 CONF_DIR = SYSCONFDIR + "/ganeti"
 175 USER_SCRIPTS_DIR = CONF_DIR + "/scripts"
 176 ENABLE_CONFD = _autoconf.ENABLE_CONFD
 177 HS_CONFD = _autoconf.HS_CONFD
 178
 179 #: Lock file for watcher, locked in shared mode by watcher; lock in exclusive
 180 # mode to block watcher (see L{cli._RunWhileClusterStoppedHelper.Call}
 181 WATCHER_LOCK_FILE = LOCK_DIR + "/ganeti-watcher.lock"
 182
 183 #: Status file for per-group watcher, locked in exclusive mode by watcher
 184 WATCHER_GROUP_STATE_FILE = DATA_DIR + "/watcher.%s.data"
 185
 186 #: File for per-group instance status, merged into L{INSTANCE_STATUS_FILE} by
 187 #: per-group processes
 188 WATCHER_GROUP_INSTANCE_STATUS_FILE = DATA_DIR + "/watcher.%s.instance-status"
 189
 190 #: File containing Unix timestamp until which watcher should be paused
 191 WATCHER_PAUSEFILE = DATA_DIR + "/watcher.pause"
 192
 193 # Master IP address setup scripts paths (default and user-provided)
 194 DEFAULT_MASTER_SETUP_SCRIPT = TOOLSDIR + "/master-ip-setup"
 195 EXTERNAL_MASTER_SETUP_SCRIPT = USER_SCRIPTS_DIR + "/master-ip-setup"
 196
 197 ALL_CERT_FILES = frozenset([
 198   NODED_CERT_FILE,
 199   RAPI_CERT_FILE,
 200   SPICE_CERT_FILE,
 201   SPICE_CACERT_FILE,
 202   ])
 203
 204 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 205
 206 NODED = "ganeti-noded"
 207 CONFD = "ganeti-confd"
 208 RAPI = "ganeti-rapi"
 209 MASTERD = "ganeti-masterd"
 210 # used in the ganeti-nbma project
 211 NLD = "ganeti-nld"
 212
 213 DAEMONS_PORTS = {
 214   # daemon-name: ("proto", "default-port")
 215   NODED: ("tcp", 1811),
 216   CONFD: ("udp", 1814),
 217   RAPI: ("tcp", 5080),
 218   "ssh": ("tcp", 22),
 219   # used in the ganeti-nbma project
 220   NLD: ("udp", 1816),
 221 }
 222 DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
 223 DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
 224 DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
 225 # used in the ganeti-nbma project
 226 DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
 227
 228 FIRST_DRBD_PORT = 11000
 229 LAST_DRBD_PORT = 14999
 230
 231 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
 232 DAEMONS_LOGFILES = {
 233   # "daemon-name": "logfile"
 234   NODED: LOG_DIR + "node-daemon.log",
 235   CONFD: LOG_DIR + "conf-daemon.log",
 236   RAPI: LOG_DIR + "rapi-daemon.log",
 237   MASTERD: LOG_DIR + "master-daemon.log",
 238   # used in the ganeti-nbma project
 239   NLD: LOG_DIR + "nl-daemon.log",
 240   }
 241
 242 LOG_OS_DIR = LOG_DIR + "os"
 243 LOG_WATCHER = LOG_DIR + "watcher.log"
 244 LOG_COMMANDS = LOG_DIR + "commands.log"
 245 LOG_BURNIN = LOG_DIR + "burnin.log"
 246 LOG_SETUP_SSH = LOG_DIR + "setup-ssh.log"
 247
 248 DEV_CONSOLE = "/dev/console"
 249
 250 PROC_MOUNTS = "/proc/mounts"
 251
 252 # Local UniX Interface related constants
 253 LUXI_EOM = "\3"
 254 LUXI_VERSION = CONFIG_VERSION
 255
 256 # one of "no", "yes", "only"
 257 SYSLOG_USAGE = _autoconf.SYSLOG_USAGE
 258 SYSLOG_NO = "no"
 259 SYSLOG_YES = "yes"
 260 SYSLOG_ONLY = "only"
 261 SYSLOG_SOCKET = "/dev/log"
 262
 263 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
 264 EXPORT_DIR = _autoconf.EXPORT_DIR
 265
 266 EXPORT_CONF_FILE = "config.ini"
 267
 268 XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
 269 XEN_KERNEL = _autoconf.XEN_KERNEL
 270 XEN_INITRD = _autoconf.XEN_INITRD
 271 XEN_CMD_XM = "xm"
 272 XEN_CMD_XL = "xl"
 273 # FIXME: This will be made configurable using hvparams in Ganeti 2.7
 274 XEN_CMD = _autoconf.XEN_CMD
 275
 276 KVM_PATH = _autoconf.KVM_PATH
 277 KVM_KERNEL = _autoconf.KVM_KERNEL
 278 SOCAT_PATH = _autoconf.SOCAT_PATH
 279 SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
 280 SOCAT_USE_COMPRESS = _autoconf.SOCAT_USE_COMPRESS
 281 SOCAT_ESCAPE_CODE = "0x1d"
 282
 283 #: Console as SSH command
 284 CONS_SSH = "ssh"
 285
 286 #: Console as VNC server
 287 CONS_VNC = "vnc"
 288
 289 #: Console as SPICE server
 290 CONS_SPICE = "spice"
 291
 292 #: Display a message for console access
 293 CONS_MESSAGE = "msg"
 294
 295 #: All console types
 296 CONS_ALL = frozenset([CONS_SSH, CONS_VNC, CONS_SPICE, CONS_MESSAGE])
 297
 298 # For RSA keys more bits are better, but they also make operations more
 299 # expensive. NIST SP 800-131 recommends a minimum of 2048 bits from the year
 300 # 2010 on.
 301 RSA_KEY_BITS = 2048
 302
 303 # Ciphers allowed for SSL connections. For the format, see ciphers(1). A better
 304 # way to disable ciphers would be to use the exclamation mark (!), but socat
 305 # versions below 1.5 can't parse exclamation marks in options properly. When
 306 # modifying the ciphers, ensure not to accidentially add something after it's
 307 # been removed. Use the "openssl" utility to check the allowed ciphers, e.g.
 308 # "openssl ciphers -v HIGH:-DES".
 309 OPENSSL_CIPHERS = "HIGH:-DES:-3DES:-EXPORT:-ADH"
 310
 311 # Digest used to sign certificates ("openssl x509" uses SHA1 by default)
 312 X509_CERT_SIGN_DIGEST = "SHA1"
 313
 314 # Default validity of certificates in days
 315 X509_CERT_DEFAULT_VALIDITY = 365 * 5
 316
 317 # commonName (CN) used in certificates
 318 X509_CERT_CN = "ganeti.example.com"
 319
 320 X509_CERT_SIGNATURE_HEADER = "X-Ganeti-Signature"
 321
 322 IMPORT_EXPORT_DAEMON = _autoconf.PKGLIBDIR + "/import-export"
 323
 324 # Import/export daemon mode
 325 IEM_IMPORT = "import"
 326 IEM_EXPORT = "export"
 327
 328 # Import/export transport compression
 329 IEC_NONE = "none"
 330 IEC_GZIP = "gzip"
 331 IEC_ALL = frozenset([
 332   IEC_NONE,
 333   IEC_GZIP,
 334   ])
 335
 336 IE_CUSTOM_SIZE = "fd"
 337
 338 IE_MAGIC_RE = re.compile(r"^[-_.a-zA-Z0-9]{5,100}$")
 339
 340 # Import/export I/O
 341 # Direct file I/O, equivalent to a shell's I/O redirection using '<' or '>'
 342 IEIO_FILE = "file"
 343 # Raw block device I/O using "dd"
 344 IEIO_RAW_DISK = "raw"
 345 # OS definition import/export script
 346 IEIO_SCRIPT = "script"
 347
 348 VALUE_DEFAULT = "default"
 349 VALUE_AUTO = "auto"
 350 VALUE_GENERATE = "generate"
 351 VALUE_NONE = "none"
 352 VALUE_TRUE = "true"
 353 VALUE_FALSE = "false"
 354
 355 # External script validation mask
 356 EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")
 357
 358 # hooks-related constants
 359 HOOKS_BASE_DIR = CONF_DIR + "/hooks"
 360 HOOKS_PHASE_PRE = "pre"
 361 HOOKS_PHASE_POST = "post"
 362 HOOKS_NAME_CFGUPDATE = "config-update"
 363 HOOKS_NAME_WATCHER = "watcher"
 364 HOOKS_VERSION = 2
 365 HOOKS_PATH = "/sbin:/bin:/usr/sbin:/usr/bin"
 366
 367 # hooks subject type (what object type does the LU deal with)
 368 HTYPE_CLUSTER = "CLUSTER"
 369 HTYPE_NODE = "NODE"
 370 HTYPE_GROUP = "GROUP"
 371 HTYPE_INSTANCE = "INSTANCE"
 372 HTYPE_NETWORK = "NETWORK"
 373
 374 HKR_SKIP = 0
 375 HKR_FAIL = 1
 376 HKR_SUCCESS = 2
 377
 378 # Storage types
 379 ST_FILE = "file"
 380 ST_LVM_PV = "lvm-pv"
 381 ST_LVM_VG = "lvm-vg"
 382
 383 # Storage fields
 384 # first two are valid in LU context only, not passed to backend
 385 SF_NODE = "node"
 386 SF_TYPE = "type"
 387 # and the rest are valid in backend
 388 SF_NAME = "name"
 389 SF_SIZE = "size"
 390 SF_FREE = "free"
 391 SF_USED = "used"
 392 SF_ALLOCATABLE = "allocatable"
 393
 394 # Storage operations
 395 SO_FIX_CONSISTENCY = "fix-consistency"
 396
 397 # Available fields per storage type
 398 VALID_STORAGE_FIELDS = frozenset([
 399   SF_NAME,
 400   SF_TYPE,
 401   SF_SIZE,
 402   SF_USED,
 403   SF_FREE,
 404   SF_ALLOCATABLE
 405   ])
 406
 407 VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
 408
 409 MODIFIABLE_STORAGE_FIELDS = {
 410   ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
 411   }
 412
 413 VALID_STORAGE_OPERATIONS = {
 414   ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
 415   }
 416
 417 # Local disk status
 418 # Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
 419 (LDS_OKAY,
 420  LDS_UNKNOWN,
 421  LDS_FAULTY) = range(1, 4)
 422
 423 # disk template types
 424 DT_DISKLESS = "diskless"
 425 DT_PLAIN = "plain"
 426 DT_DRBD8 = "drbd"
 427 DT_FILE = "file"
 428 DT_SHARED_FILE = "sharedfile"
 429 DT_BLOCK = "blockdev"
 430 DT_RBD = "rbd"
 431
 432 # the set of network-mirrored disk templates
 433 DTS_INT_MIRROR = frozenset([DT_DRBD8])
 434
 435 # the set of externally-mirrored disk templates (e.g. SAN, NAS)
 436 DTS_EXT_MIRROR = frozenset([DT_SHARED_FILE, DT_BLOCK, DT_RBD])
 437
 438 # the set of non-lvm-based disk templates
 439 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE, DT_SHARED_FILE,
 440                          DT_BLOCK, DT_RBD])
 441
 442 # the set of disk templates which can be grown
 443 DTS_GROWABLE = frozenset([DT_PLAIN, DT_DRBD8, DT_FILE, DT_SHARED_FILE, DT_RBD])
 444
 445 # the set of disk templates that allow adoption
 446 DTS_MAY_ADOPT = frozenset([DT_PLAIN, DT_BLOCK])
 447
 448 # the set of disk templates that *must* use adoption
 449 DTS_MUST_ADOPT = frozenset([DT_BLOCK])
 450
 451 # the set of disk templates that allow migrations
 452 DTS_MIRRORED = frozenset.union(DTS_INT_MIRROR, DTS_EXT_MIRROR)
 453
 454 # the set of file based disk templates
 455 DTS_FILEBASED = frozenset([DT_FILE, DT_SHARED_FILE])
 456
 457 # logical disk types
 458 LD_LV = "lvm"
 459 LD_DRBD8 = "drbd8"
 460 LD_FILE = "file"
 461 LD_BLOCKDEV = "blockdev"
 462 LD_RBD = "rbd"
 463 LOGICAL_DISK_TYPES = frozenset([
 464   LD_LV,
 465   LD_DRBD8,
 466   LD_FILE,
 467   LD_BLOCKDEV,
 468   LD_RBD,
 469   ])
 470
 471 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8, LD_BLOCKDEV, LD_RBD])
 472
 473 # drbd constants
 474 DRBD_HMAC_ALG = "md5"
 475 DRBD_NET_PROTOCOL = "C"
 476
 477 # drbd barrier types
 478 DRBD_B_NONE = "n"
 479 DRBD_B_DISK_BARRIERS = "b"
 480 DRBD_B_DISK_DRAIN = "d"
 481 DRBD_B_DISK_FLUSH = "f"
 482
 483 # Valid barrier combinations: "n" or any non-null subset of "bfd"
 484 DRBD_VALID_BARRIER_OPT = frozenset([
 485   frozenset([DRBD_B_NONE]),
 486   frozenset([DRBD_B_DISK_BARRIERS]),
 487   frozenset([DRBD_B_DISK_DRAIN]),
 488   frozenset([DRBD_B_DISK_FLUSH]),
 489   frozenset([DRBD_B_DISK_DRAIN, DRBD_B_DISK_FLUSH]),
 490   frozenset([DRBD_B_DISK_DRAIN, DRBD_B_DISK_FLUSH]),
 491   frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_DRAIN]),
 492   frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_FLUSH]),
 493   frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_FLUSH, DRBD_B_DISK_DRAIN]),
 494   ])
 495
 496 # rbd tool command
 497 RBD_CMD = "rbd"
 498
 499 # file backend driver
 500 FD_LOOP = "loop"
 501 FD_BLKTAP = "blktap"
 502
 503 # the set of drbd-like disk types
 504 LDS_DRBD = frozenset([LD_DRBD8])
 505
 506 # disk access mode
 507 DISK_RDONLY = "ro"
 508 DISK_RDWR = "rw"
 509 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
 510
 511 # disk replacement mode
 512 REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
 513 REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
 514 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
 515 REPLACE_DISK_AUTO = "replace_auto"
 516 REPLACE_MODES = frozenset([
 517   REPLACE_DISK_PRI,
 518   REPLACE_DISK_SEC,
 519   REPLACE_DISK_CHG,
 520   REPLACE_DISK_AUTO,
 521   ])
 522
 523 # Instance export mode
 524 EXPORT_MODE_LOCAL = "local"
 525 EXPORT_MODE_REMOTE = "remote"
 526 EXPORT_MODES = frozenset([
 527   EXPORT_MODE_LOCAL,
 528   EXPORT_MODE_REMOTE,
 529   ])
 530
 531 # instance creation modes
 532 INSTANCE_CREATE = "create"
 533 INSTANCE_IMPORT = "import"
 534 INSTANCE_REMOTE_IMPORT = "remote-import"
 535 INSTANCE_CREATE_MODES = frozenset([
 536   INSTANCE_CREATE,
 537   INSTANCE_IMPORT,
 538   INSTANCE_REMOTE_IMPORT,
 539   ])
 540
 541 # Remote import/export handshake message and version
 542 RIE_VERSION = 0
 543 RIE_HANDSHAKE = "Hi, I'm Ganeti"
 544
 545 # Remote import/export certificate validity in seconds
 546 RIE_CERT_VALIDITY = 24 * 60 * 60
 547
 548 # Overall timeout for establishing connection
 549 RIE_CONNECT_TIMEOUT = 180
 550
 551 # Export only: how long to wait per connection attempt (seconds)
 552 RIE_CONNECT_ATTEMPT_TIMEOUT = 20
 553
 554 # Export only: number of attempts to connect
 555 RIE_CONNECT_RETRIES = 10
 556
 557 #: Give child process up to 5 seconds to exit after sending a signal
 558 CHILD_LINGER_TIMEOUT = 5.0
 559
 560 DISK_TEMPLATES = frozenset([
 561   DT_DISKLESS,
 562   DT_PLAIN,
 563   DT_DRBD8,
 564   DT_FILE,
 565   DT_SHARED_FILE,
 566   DT_BLOCK,
 567   DT_RBD
 568   ])
 569
 570 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
 571
 572 # import/export config options
 573 INISECT_EXP = "export"
 574 INISECT_INS = "instance"
 575 INISECT_HYP = "hypervisor"
 576 INISECT_BEP = "backend"
 577 INISECT_OSP = "os"
 578
 579 # dynamic device modification
 580 DDM_ADD = "add"
 581 DDM_MODIFY = "modify"
 582 DDM_REMOVE = "remove"
 583 DDMS_VALUES = frozenset([DDM_ADD, DDM_REMOVE])
 584 DDMS_VALUES_WITH_MODIFY = (DDMS_VALUES | frozenset([
 585   DDM_MODIFY,
 586   ]))
 587 # TODO: DDM_SWAP, DDM_MOVE?
 588
 589 # common exit codes
 590 EXIT_SUCCESS = 0
 591 EXIT_FAILURE = 1
 592 EXIT_NOTCLUSTER = 5
 593 EXIT_NOTMASTER = 11
 594 EXIT_NODESETUP_ERROR = 12
 595 EXIT_CONFIRMATION = 13 # need user confirmation
 596
 597 #: Exit code for query operations with unknown fields
 598 EXIT_UNKNOWN_FIELD = 14
 599
 600 # tags
 601 TAG_CLUSTER = "cluster"
 602 TAG_NODEGROUP = "nodegroup"
 603 TAG_NODE = "node"
 604 TAG_INSTANCE = "instance"
 605 VALID_TAG_TYPES = frozenset([
 606   TAG_CLUSTER,
 607   TAG_NODEGROUP,
 608   TAG_NODE,
 609   TAG_INSTANCE,
 610   ])
 611 MAX_TAG_LEN = 128
 612 MAX_TAGS_PER_OBJ = 4096
 613
 614 # others
 615 DEFAULT_BRIDGE = "xen-br0"
 616 CLASSIC_DRBD_SYNC_SPEED = 60 * 1024  # 60 MiB, expressed in KiB
 617 IP4_ADDRESS_LOCALHOST = "127.0.0.1"
 618 IP4_ADDRESS_ANY = "0.0.0.0"
 619 IP6_ADDRESS_LOCALHOST = "::1"
 620 IP6_ADDRESS_ANY = "::"
 621 IP4_VERSION = 4
 622 IP6_VERSION = 6
 623 VALID_IP_VERSIONS = frozenset([IP4_VERSION, IP6_VERSION])
 624 # for export to htools
 625 IP4_FAMILY = socket.AF_INET
 626 IP6_FAMILY = socket.AF_INET6
 627
 628 TCP_PING_TIMEOUT = 10
 629 GANETI_RUNAS = "root"
 630 DEFAULT_VG = "xenvg"
 631 DEFAULT_DRBD_HELPER = "/bin/true"
 632 MIN_VG_SIZE = 20480
 633 DEFAULT_MAC_PREFIX = "aa:00:00"
 634 # default maximum instance wait time, in seconds.
 635 DEFAULT_SHUTDOWN_TIMEOUT = 120
 636 NODE_MAX_CLOCK_SKEW = 150
 637 # Time for an intra-cluster disk transfer to wait for a connection
 638 DISK_TRANSFER_CONNECT_TIMEOUT = 60
 639 # Disk index separator
 640 DISK_SEPARATOR = _autoconf.DISK_SEPARATOR
 641 IP_COMMAND_PATH = _autoconf.IP_PATH
 642
 643 #: Key for job IDs in opcode result
 644 JOB_IDS_KEY = "jobs"
 645
 646 # runparts results
 647 (RUNPARTS_SKIP,
 648  RUNPARTS_RUN,
 649  RUNPARTS_ERR) = range(3)
 650
 651 RUNPARTS_STATUS = frozenset([RUNPARTS_SKIP, RUNPARTS_RUN, RUNPARTS_ERR])
 652
 653 # RPC constants
 654 (RPC_ENCODING_NONE,
 655  RPC_ENCODING_ZLIB_BASE64) = range(2)
 656
 657 # os related constants
 658 OS_SCRIPT_CREATE = "create"
 659 OS_SCRIPT_IMPORT = "import"
 660 OS_SCRIPT_EXPORT = "export"
 661 OS_SCRIPT_RENAME = "rename"
 662 OS_SCRIPT_VERIFY = "verify"
 663 OS_SCRIPTS = frozenset([
 664   OS_SCRIPT_CREATE,
 665   OS_SCRIPT_IMPORT,
 666   OS_SCRIPT_EXPORT,
 667   OS_SCRIPT_RENAME,
 668   OS_SCRIPT_VERIFY
 669   ])
 670
 671 OS_API_FILE = "ganeti_api_version"
 672 OS_VARIANTS_FILE = "variants.list"
 673 OS_PARAMETERS_FILE = "parameters.list"
 674
 675 OS_VALIDATE_PARAMETERS = "parameters"
 676 OS_VALIDATE_CALLS = frozenset([OS_VALIDATE_PARAMETERS])
 677
 678 # ssh constants
 679 SSH_CONFIG_DIR = _autoconf.SSH_CONFIG_DIR
 680 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_dsa_key"
 681 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
 682 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_rsa_key"
 683 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
 684 SSH = "ssh"
 685 SCP = "scp"
 686
 687 # reboot types
 688 INSTANCE_REBOOT_SOFT = "soft"
 689 INSTANCE_REBOOT_HARD = "hard"
 690 INSTANCE_REBOOT_FULL = "full"
 691
 692 REBOOT_TYPES = frozenset([
 693   INSTANCE_REBOOT_SOFT,
 694   INSTANCE_REBOOT_HARD,
 695   INSTANCE_REBOOT_FULL
 696   ])
 697
 698 # instance reboot behaviors
 699 INSTANCE_REBOOT_ALLOWED = "reboot"
 700 INSTANCE_REBOOT_EXIT = "exit"
 701
 702 REBOOT_BEHAVIORS = frozenset([
 703   INSTANCE_REBOOT_ALLOWED,
 704   INSTANCE_REBOOT_EXIT
 705   ])
 706
 707 VTYPE_STRING = "string"
 708 VTYPE_MAYBE_STRING = "maybe-string"
 709 VTYPE_BOOL = "bool"
 710 VTYPE_SIZE = "size" # size, in MiBs
 711 VTYPE_INT = "int"
 712 ENFORCEABLE_TYPES = frozenset([
 713   VTYPE_STRING,
 714   VTYPE_MAYBE_STRING,
 715   VTYPE_BOOL,
 716   VTYPE_SIZE,
 717   VTYPE_INT,
 718   ])
 719
 720 # Constant representing that the user does not specify any IP version
 721 IFACE_NO_IP_VERSION_SPECIFIED = 0
 722
 723 # HV parameter names (global namespace)
 724 HV_BOOT_ORDER = "boot_order"
 725 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
 726 HV_KVM_CDROM2_IMAGE_PATH = "cdrom2_image_path"
 727 HV_KVM_FLOPPY_IMAGE_PATH = "floppy_image_path"
 728 HV_NIC_TYPE = "nic_type"
 729 HV_DISK_TYPE = "disk_type"
 730 HV_KVM_CDROM_DISK_TYPE = "cdrom_disk_type"
 731 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
 732 HV_VNC_PASSWORD_FILE = "vnc_password_file"
 733 HV_VNC_TLS = "vnc_tls"
 734 HV_VNC_X509 = "vnc_x509_path"
 735 HV_VNC_X509_VERIFY = "vnc_x509_verify"
 736 HV_KVM_SPICE_BIND = "spice_bind"
 737 HV_KVM_SPICE_IP_VERSION = "spice_ip_version"
 738 HV_KVM_SPICE_PASSWORD_FILE = "spice_password_file"
 739 HV_KVM_SPICE_LOSSLESS_IMG_COMPR = "spice_image_compression"
 740 HV_KVM_SPICE_JPEG_IMG_COMPR = "spice_jpeg_wan_compression"
 741 HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR = "spice_zlib_glz_wan_compression"
 742 HV_KVM_SPICE_STREAMING_VIDEO_DETECTION = "spice_streaming_video"
 743 HV_KVM_SPICE_AUDIO_COMPR = "spice_playback_compression"
 744 HV_KVM_SPICE_USE_TLS = "spice_use_tls"
 745 HV_KVM_SPICE_TLS_CIPHERS = "spice_tls_ciphers"
 746 HV_KVM_SPICE_USE_VDAGENT = "spice_use_vdagent"
 747 HV_ACPI = "acpi"
 748 HV_PAE = "pae"
 749 HV_USE_BOOTLOADER = "use_bootloader"
 750 HV_BOOTLOADER_ARGS = "bootloader_args"
 751 HV_BOOTLOADER_PATH = "bootloader_path"
 752 HV_KERNEL_ARGS = "kernel_args"
 753 HV_KERNEL_PATH = "kernel_path"
 754 HV_INITRD_PATH = "initrd_path"
 755 HV_ROOT_PATH = "root_path"
 756 HV_SERIAL_CONSOLE = "serial_console"
 757 HV_USB_MOUSE = "usb_mouse"
 758 HV_KEYMAP = "keymap"
 759 HV_DEVICE_MODEL = "device_model"
 760 HV_INIT_SCRIPT = "init_script"
 761 HV_MIGRATION_PORT = "migration_port"
 762 HV_MIGRATION_BANDWIDTH = "migration_bandwidth"
 763 HV_MIGRATION_DOWNTIME = "migration_downtime"
 764 HV_MIGRATION_MODE = "migration_mode"
 765 HV_USE_LOCALTIME = "use_localtime"
 766 HV_DISK_CACHE = "disk_cache"
 767 HV_SECURITY_MODEL = "security_model"
 768 HV_SECURITY_DOMAIN = "security_domain"
 769 HV_KVM_FLAG = "kvm_flag"
 770 HV_VHOST_NET = "vhost_net"
 771 HV_KVM_USE_CHROOT = "use_chroot"
 772 HV_CPU_MASK = "cpu_mask"
 773 HV_MEM_PATH = "mem_path"
 774 HV_BLOCKDEV_PREFIX = "blockdev_prefix"
 775 HV_REBOOT_BEHAVIOR = "reboot_behavior"
 776
 777 HVS_PARAMETER_TYPES = {
 778   HV_BOOT_ORDER: VTYPE_STRING,
 779   HV_KVM_FLOPPY_IMAGE_PATH: VTYPE_STRING,
 780   HV_CDROM_IMAGE_PATH: VTYPE_STRING,
 781   HV_KVM_CDROM2_IMAGE_PATH: VTYPE_STRING,
 782   HV_NIC_TYPE: VTYPE_STRING,
 783   HV_DISK_TYPE: VTYPE_STRING,
 784   HV_KVM_CDROM_DISK_TYPE: VTYPE_STRING,
 785   HV_VNC_PASSWORD_FILE: VTYPE_STRING,
 786   HV_VNC_BIND_ADDRESS: VTYPE_STRING,
 787   HV_VNC_TLS: VTYPE_BOOL,
 788   HV_VNC_X509: VTYPE_STRING,
 789   HV_VNC_X509_VERIFY: VTYPE_BOOL,
 790   HV_KVM_SPICE_BIND: VTYPE_STRING,
 791   HV_KVM_SPICE_IP_VERSION: VTYPE_INT,
 792   HV_KVM_SPICE_PASSWORD_FILE: VTYPE_STRING,
 793   HV_KVM_SPICE_LOSSLESS_IMG_COMPR: VTYPE_STRING,
 794   HV_KVM_SPICE_JPEG_IMG_COMPR: VTYPE_STRING,
 795   HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: VTYPE_STRING,
 796   HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: VTYPE_STRING,
 797   HV_KVM_SPICE_AUDIO_COMPR: VTYPE_BOOL,
 798   HV_KVM_SPICE_USE_TLS: VTYPE_BOOL,
 799   HV_KVM_SPICE_TLS_CIPHERS: VTYPE_STRING,
 800   HV_KVM_SPICE_USE_VDAGENT: VTYPE_BOOL,
 801   HV_ACPI: VTYPE_BOOL,
 802   HV_PAE: VTYPE_BOOL,
 803   HV_USE_BOOTLOADER: VTYPE_BOOL,
 804   HV_BOOTLOADER_PATH: VTYPE_STRING,
 805   HV_BOOTLOADER_ARGS: VTYPE_STRING,
 806   HV_KERNEL_PATH: VTYPE_STRING,
 807   HV_KERNEL_ARGS: VTYPE_STRING,
 808   HV_INITRD_PATH: VTYPE_STRING,
 809   HV_ROOT_PATH: VTYPE_MAYBE_STRING,
 810   HV_SERIAL_CONSOLE: VTYPE_BOOL,
 811   HV_USB_MOUSE: VTYPE_STRING,
 812   HV_KEYMAP: VTYPE_STRING,
 813   HV_DEVICE_MODEL: VTYPE_STRING,
 814   HV_INIT_SCRIPT: VTYPE_STRING,
 815   HV_MIGRATION_PORT: VTYPE_INT,
 816   HV_MIGRATION_BANDWIDTH: VTYPE_INT,
 817   HV_MIGRATION_DOWNTIME: VTYPE_INT,
 818   HV_MIGRATION_MODE: VTYPE_STRING,
 819   HV_USE_LOCALTIME: VTYPE_BOOL,
 820   HV_DISK_CACHE: VTYPE_STRING,
 821   HV_SECURITY_MODEL: VTYPE_STRING,
 822   HV_SECURITY_DOMAIN: VTYPE_STRING,
 823   HV_KVM_FLAG: VTYPE_STRING,
 824   HV_VHOST_NET: VTYPE_BOOL,
 825   HV_KVM_USE_CHROOT: VTYPE_BOOL,
 826   HV_CPU_MASK: VTYPE_STRING,
 827   HV_MEM_PATH: VTYPE_STRING,
 828   HV_BLOCKDEV_PREFIX: VTYPE_STRING,
 829   HV_REBOOT_BEHAVIOR: VTYPE_STRING,
 830   }
 831
 832 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
 833
 834 # Migration statuses
 835 HV_MIGRATION_COMPLETED = "completed"
 836 HV_MIGRATION_ACTIVE = "active"
 837 HV_MIGRATION_FAILED = "failed"
 838 HV_MIGRATION_CANCELLED = "cancelled"
 839
 840 HV_MIGRATION_VALID_STATUSES = frozenset([
 841   HV_MIGRATION_COMPLETED,
 842   HV_MIGRATION_ACTIVE,
 843   HV_MIGRATION_FAILED,
 844   HV_MIGRATION_CANCELLED,
 845   ])
 846
 847 HV_MIGRATION_FAILED_STATUSES = frozenset([
 848   HV_MIGRATION_FAILED,
 849   HV_MIGRATION_CANCELLED,
 850   ])
 851
 852 # KVM-specific statuses
 853 HV_KVM_MIGRATION_VALID_STATUSES = HV_MIGRATION_VALID_STATUSES
 854
 855 # Node info keys
 856 HV_NODEINFO_KEY_VERSION = "hv_version"
 857
 858 # Hypervisor state
 859 HVST_MEMORY_TOTAL = "mem_total"
 860 HVST_MEMORY_NODE = "mem_node"
 861 HVST_MEMORY_HV = "mem_hv"
 862 HVST_CPU_TOTAL = "cpu_total"
 863 HVST_CPU_NODE = "cpu_node"
 864
 865 HVST_DEFAULTS = {
 866   HVST_MEMORY_TOTAL: 0,
 867   HVST_MEMORY_NODE: 0,
 868   HVST_MEMORY_HV: 0,
 869   HVST_CPU_TOTAL: 1,
 870   HVST_CPU_NODE: 1,
 871   }
 872
 873 HVSTS_PARAMETER_TYPES = {
 874   HVST_MEMORY_TOTAL: VTYPE_INT,
 875   HVST_MEMORY_NODE: VTYPE_INT,
 876   HVST_MEMORY_HV: VTYPE_INT,
 877   HVST_CPU_TOTAL: VTYPE_INT,
 878   HVST_CPU_NODE: VTYPE_INT,
 879   }
 880
 881 HVSTS_PARAMETERS = frozenset(HVSTS_PARAMETER_TYPES.keys())
 882
 883 # Disk state
 884 DS_DISK_TOTAL = "disk_total"
 885 DS_DISK_RESERVED = "disk_reserved"
 886 DS_DISK_OVERHEAD = "disk_overhead"
 887
 888 DS_DEFAULTS = {
 889   DS_DISK_TOTAL: 0,
 890   DS_DISK_RESERVED: 0,
 891   DS_DISK_OVERHEAD: 0,
 892   }
 893
 894 DSS_PARAMETER_TYPES = {
 895   DS_DISK_TOTAL: VTYPE_INT,
 896   DS_DISK_RESERVED: VTYPE_INT,
 897   DS_DISK_OVERHEAD: VTYPE_INT,
 898   }
 899
 900 DSS_PARAMETERS = frozenset(DSS_PARAMETER_TYPES.keys())
 901 DS_VALID_TYPES = frozenset([LD_LV])
 902
 903 # Backend parameter names
 904 BE_MEMORY = "memory" # deprecated and replaced by max and min mem
 905 BE_MAXMEM = "maxmem"
 906 BE_MINMEM = "minmem"
 907 BE_VCPUS = "vcpus"
 908 BE_AUTO_BALANCE = "auto_balance"
 909 BE_ALWAYS_FAILOVER = "always_failover"
 910 BE_SPINDLE_USE = "spindle_use"
 911
 912 BES_PARAMETER_TYPES = {
 913   BE_MAXMEM: VTYPE_SIZE,
 914   BE_MINMEM: VTYPE_SIZE,
 915   BE_VCPUS: VTYPE_INT,
 916   BE_AUTO_BALANCE: VTYPE_BOOL,
 917   BE_ALWAYS_FAILOVER: VTYPE_BOOL,
 918   BE_SPINDLE_USE: VTYPE_INT,
 919   }
 920
 921 BES_PARAMETER_COMPAT = {
 922   BE_MEMORY: VTYPE_SIZE,
 923   }
 924 BES_PARAMETER_COMPAT.update(BES_PARAMETER_TYPES)
 925
 926 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 927
 928 # instance specs
 929 ISPEC_MEM_SIZE = "memory-size"
 930 ISPEC_CPU_COUNT = "cpu-count"
 931 ISPEC_DISK_COUNT = "disk-count"
 932 ISPEC_DISK_SIZE = "disk-size"
 933 ISPEC_NIC_COUNT = "nic-count"
 934 ISPEC_SPINDLE_USE = "spindle-use"
 935
 936 ISPECS_PARAMETER_TYPES = {
 937   ISPEC_MEM_SIZE: VTYPE_INT,
 938   ISPEC_CPU_COUNT: VTYPE_INT,
 939   ISPEC_DISK_COUNT: VTYPE_INT,
 940   ISPEC_DISK_SIZE: VTYPE_INT,
 941   ISPEC_NIC_COUNT: VTYPE_INT,
 942   ISPEC_SPINDLE_USE: VTYPE_INT,
 943   }
 944
 945 ISPECS_PARAMETERS = frozenset(ISPECS_PARAMETER_TYPES.keys())
 946
 947 ISPECS_MIN = "min"
 948 ISPECS_MAX = "max"
 949 ISPECS_STD = "std"
 950 IPOLICY_DTS = "disk-templates"
 951 IPOLICY_VCPU_RATIO = "vcpu-ratio"
 952 IPOLICY_SPINDLE_RATIO = "spindle-ratio"
 953
 954 IPOLICY_ISPECS = frozenset([
 955   ISPECS_MIN,
 956   ISPECS_MAX,
 957   ISPECS_STD,
 958   ])
 959
 960 IPOLICY_PARAMETERS = frozenset([
 961   IPOLICY_VCPU_RATIO,
 962   IPOLICY_SPINDLE_RATIO,
 963   ])
 964
 965 IPOLICY_ALL_KEYS = (IPOLICY_ISPECS |
 966                     IPOLICY_PARAMETERS |
 967                     frozenset([IPOLICY_DTS]))
 968
 969 # Node parameter names
 970 ND_OOB_PROGRAM = "oob_program"
 971 ND_SPINDLE_COUNT = "spindle_count"
 972
 973 NDS_PARAMETER_TYPES = {
 974   ND_OOB_PROGRAM: VTYPE_MAYBE_STRING,
 975   ND_SPINDLE_COUNT: VTYPE_INT,
 976   }
 977
 978 NDS_PARAMETERS = frozenset(NDS_PARAMETER_TYPES.keys())
 979
 980 # Logical Disks parameters
 981 LDP_RESYNC_RATE = "resync-rate"
 982 LDP_STRIPES = "stripes"
 983 LDP_BARRIERS = "disabled-barriers"
 984 LDP_NO_META_FLUSH = "disable-meta-flush"
 985 LDP_DEFAULT_METAVG = "default-metavg"
 986 LDP_DISK_CUSTOM = "disk-custom"
 987 LDP_NET_CUSTOM = "net-custom"
 988 LDP_DYNAMIC_RESYNC = "dynamic-resync"
 989 LDP_PLAN_AHEAD = "c-plan-ahead"
 990 LDP_FILL_TARGET = "c-fill-target"
 991 LDP_DELAY_TARGET = "c-delay-target"
 992 LDP_MAX_RATE = "c-max-rate"
 993 LDP_MIN_RATE = "c-min-rate"
 994 LDP_POOL = "pool"
 995 DISK_LD_TYPES = {
 996   LDP_RESYNC_RATE: VTYPE_INT,
 997   LDP_STRIPES: VTYPE_INT,
 998   LDP_BARRIERS: VTYPE_STRING,
 999   LDP_NO_META_FLUSH: VTYPE_BOOL,
1000   LDP_DEFAULT_METAVG: VTYPE_STRING,
1001   LDP_DISK_CUSTOM: VTYPE_STRING,
1002   LDP_NET_CUSTOM: VTYPE_STRING,
1003   LDP_DYNAMIC_RESYNC: VTYPE_BOOL,
1004   LDP_PLAN_AHEAD: VTYPE_INT,
1005   LDP_FILL_TARGET: VTYPE_INT,
1006   LDP_DELAY_TARGET: VTYPE_INT,
1007   LDP_MAX_RATE: VTYPE_INT,
1008   LDP_MIN_RATE: VTYPE_INT,
1009   LDP_POOL: VTYPE_STRING,
1010   }
1011 DISK_LD_PARAMETERS = frozenset(DISK_LD_TYPES.keys())
1012
1013 # Disk template parameters (can be set/changed by the user via gnt-cluster and
1014 # gnt-group)
1015 DRBD_RESYNC_RATE = "resync-rate"
1016 DRBD_DATA_STRIPES = "data-stripes"
1017 DRBD_META_STRIPES = "meta-stripes"
1018 DRBD_DISK_BARRIERS = "disk-barriers"
1019 DRBD_META_BARRIERS = "meta-barriers"
1020 DRBD_DEFAULT_METAVG = "metavg"
1021 DRBD_DISK_CUSTOM = "disk-custom"
1022 DRBD_NET_CUSTOM = "net-custom"
1023 DRBD_DYNAMIC_RESYNC = "dynamic-resync"
1024 DRBD_PLAN_AHEAD = "c-plan-ahead"
1025 DRBD_FILL_TARGET = "c-fill-target"
1026 DRBD_DELAY_TARGET = "c-delay-target"
1027 DRBD_MAX_RATE = "c-max-rate"
1028 DRBD_MIN_RATE = "c-min-rate"
1029 LV_STRIPES = "stripes"
1030 RBD_POOL = "pool"
1031 DISK_DT_TYPES = {
1032   DRBD_RESYNC_RATE: VTYPE_INT,
1033   DRBD_DATA_STRIPES: VTYPE_INT,
1034   DRBD_META_STRIPES: VTYPE_INT,
1035   DRBD_DISK_BARRIERS: VTYPE_STRING,
1036   DRBD_META_BARRIERS: VTYPE_BOOL,
1037   DRBD_DEFAULT_METAVG: VTYPE_STRING,
1038   DRBD_DISK_CUSTOM: VTYPE_STRING,
1039   DRBD_NET_CUSTOM: VTYPE_STRING,
1040   DRBD_DYNAMIC_RESYNC: VTYPE_BOOL,
1041   DRBD_PLAN_AHEAD: VTYPE_INT,
1042   DRBD_FILL_TARGET: VTYPE_INT,
1043   DRBD_DELAY_TARGET: VTYPE_INT,
1044   DRBD_MAX_RATE: VTYPE_INT,
1045   DRBD_MIN_RATE: VTYPE_INT,
1046   LV_STRIPES: VTYPE_INT,
1047   RBD_POOL: VTYPE_STRING,
1048   }
1049
1050 DISK_DT_PARAMETERS = frozenset(DISK_DT_TYPES.keys())
1051
1052 # OOB supported commands
1053 OOB_POWER_ON = "power-on"
1054 OOB_POWER_OFF = "power-off"
1055 OOB_POWER_CYCLE = "power-cycle"
1056 OOB_POWER_STATUS = "power-status"
1057 OOB_HEALTH = "health"
1058
1059 OOB_COMMANDS = frozenset([
1060   OOB_POWER_ON,
1061   OOB_POWER_OFF,
1062   OOB_POWER_CYCLE,
1063   OOB_POWER_STATUS,
1064   OOB_HEALTH
1065   ])
1066
1067 OOB_POWER_STATUS_POWERED = "powered"
1068
1069 OOB_TIMEOUT = 60 # 60 seconds
1070 OOB_POWER_DELAY = 2.0 # 2 seconds
1071
1072 OOB_STATUS_OK = "OK"
1073 OOB_STATUS_WARNING = "WARNING"
1074 OOB_STATUS_CRITICAL = "CRITICAL"
1075 OOB_STATUS_UNKNOWN = "UNKNOWN"
1076
1077 OOB_STATUSES = frozenset([
1078   OOB_STATUS_OK,
1079   OOB_STATUS_WARNING,
1080   OOB_STATUS_CRITICAL,
1081   OOB_STATUS_UNKNOWN,
1082   ])
1083
1084 # Instance Parameters Profile
1085 PP_DEFAULT = "default"
1086
1087 # NIC_* constants are used inside the ganeti config
1088 NIC_MODE = "mode"
1089 NIC_LINK = "link"
1090
1091 NIC_MODE_BRIDGED = "bridged"
1092 NIC_MODE_ROUTED = "routed"
1093 NIC_IP_POOL = "pool"
1094
1095 NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])
1096
1097 # An extra description of the network.
1098 # Can be used by hooks/kvm-vif-bridge to apply different rules
1099 NETWORK_TYPE_PRIVATE = "private"
1100 NETWORK_TYPE_PUBLIC = "public"
1101
1102 NETWORK_VALID_TYPES = frozenset([NETWORK_TYPE_PRIVATE, NETWORK_TYPE_PUBLIC])
1103
1104 NICS_PARAMETER_TYPES = {
1105   NIC_MODE: VTYPE_STRING,
1106   NIC_LINK: VTYPE_STRING,
1107   }
1108
1109 NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
1110
1111 # IDISK_* constants are used in opcodes, to create/change disks
1112 IDISK_SIZE = "size"
1113 IDISK_MODE = "mode"
1114 IDISK_ADOPT = "adopt"
1115 IDISK_VG = "vg"
1116 IDISK_METAVG = "metavg"
1117 IDISK_PARAMS_TYPES = {
1118   IDISK_SIZE: VTYPE_SIZE,
1119   IDISK_MODE: VTYPE_STRING,
1120   IDISK_ADOPT: VTYPE_STRING,
1121   IDISK_VG: VTYPE_STRING,
1122   IDISK_METAVG: VTYPE_STRING,
1123   }
1124 IDISK_PARAMS = frozenset(IDISK_PARAMS_TYPES.keys())
1125
1126 # INIC_* constants are used in opcodes, to create/change nics
1127 INIC_MAC = "mac"
1128 INIC_IP = "ip"
1129 INIC_MODE = "mode"
1130 INIC_LINK = "link"
1131 INIC_NETWORK = "network"
1132 INIC_PARAMS_TYPES = {
1133   INIC_IP: VTYPE_MAYBE_STRING,
1134   INIC_LINK: VTYPE_STRING,
1135   INIC_MAC: VTYPE_STRING,
1136   INIC_MODE: VTYPE_STRING,
1137   INIC_NETWORK: VTYPE_MAYBE_STRING,
1138   }
1139 INIC_PARAMS = frozenset(INIC_PARAMS_TYPES.keys())
1140
1141 # Hypervisor constants
1142 HT_XEN_PVM = "xen-pvm"
1143 HT_FAKE = "fake"
1144 HT_XEN_HVM = "xen-hvm"
1145 HT_KVM = "kvm"
1146 HT_CHROOT = "chroot"
1147 HT_LXC = "lxc"
1148 HYPER_TYPES = frozenset([
1149   HT_XEN_PVM,
1150   HT_FAKE,
1151   HT_XEN_HVM,
1152   HT_KVM,
1153   HT_CHROOT,
1154   HT_LXC,
1155   ])
1156 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
1157
1158 VNC_BASE_PORT = 5900
1159 VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
1160 VNC_DEFAULT_BIND_ADDRESS = IP4_ADDRESS_ANY
1161
1162 # NIC types
1163 HT_NIC_RTL8139 = "rtl8139"
1164 HT_NIC_NE2K_PCI = "ne2k_pci"
1165 HT_NIC_NE2K_ISA = "ne2k_isa"
1166 HT_NIC_I82551 = "i82551"
1167 HT_NIC_I85557B = "i82557b"
1168 HT_NIC_I8259ER = "i82559er"
1169 HT_NIC_PCNET = "pcnet"
1170 HT_NIC_E1000 = "e1000"
1171 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
1172
1173 HT_HVM_VALID_NIC_TYPES = frozenset([
1174   HT_NIC_RTL8139,
1175   HT_NIC_NE2K_PCI,
1176   HT_NIC_E1000,
1177   HT_NIC_NE2K_ISA,
1178   HT_NIC_PARAVIRTUAL
1179   ])
1180 HT_KVM_VALID_NIC_TYPES = frozenset([
1181   HT_NIC_RTL8139,
1182   HT_NIC_NE2K_PCI,
1183   HT_NIC_NE2K_ISA,
1184   HT_NIC_I82551,
1185   HT_NIC_I85557B,
1186   HT_NIC_I8259ER,
1187   HT_NIC_PCNET,
1188   HT_NIC_E1000,
1189   HT_NIC_PARAVIRTUAL
1190   ])
1191
1192 # Disk types
1193 HT_DISK_IOEMU = "ioemu"
1194 HT_DISK_IDE = "ide"
1195 HT_DISK_SCSI = "scsi"
1196 HT_DISK_SD = "sd"
1197 HT_DISK_MTD = "mtd"
1198 HT_DISK_PFLASH = "pflash"
1199
1200 HT_CACHE_DEFAULT = "default"
1201 HT_CACHE_NONE = "none"
1202 HT_CACHE_WTHROUGH = "writethrough"
1203 HT_CACHE_WBACK = "writeback"
1204 HT_VALID_CACHE_TYPES = frozenset([
1205   HT_CACHE_DEFAULT,
1206   HT_CACHE_NONE,
1207   HT_CACHE_WTHROUGH,
1208   HT_CACHE_WBACK
1209   ])
1210
1211 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
1212 HT_KVM_VALID_DISK_TYPES = frozenset([
1213   HT_DISK_PARAVIRTUAL,
1214   HT_DISK_IDE,
1215   HT_DISK_SCSI,
1216   HT_DISK_SD,
1217   HT_DISK_MTD,
1218   HT_DISK_PFLASH
1219   ])
1220
1221 # Mouse types:
1222 HT_MOUSE_MOUSE = "mouse"
1223 HT_MOUSE_TABLET = "tablet"
1224
1225 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
1226
1227 # Boot order
1228 HT_BO_FLOPPY = "floppy"
1229 HT_BO_CDROM = "cdrom"
1230 HT_BO_DISK = "disk"
1231 HT_BO_NETWORK = "network"
1232
1233 HT_KVM_VALID_BO_TYPES = frozenset([
1234   HT_BO_FLOPPY,
1235   HT_BO_CDROM,
1236   HT_BO_DISK,
1237   HT_BO_NETWORK
1238   ])
1239
1240 # SPICE lossless image compression options
1241 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_GLZ = "auto_glz"
1242 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_LZ = "auto_lz"
1243 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_QUIC = "quic"
1244 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_GLZ = "glz"
1245 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_LZ = "lz"
1246 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_OFF = "off"
1247
1248 HT_KVM_SPICE_VALID_LOSSLESS_IMG_COMPR_OPTIONS = frozenset([
1249   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_GLZ,
1250   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_LZ,
1251   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_QUIC,
1252   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_GLZ,
1253   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_LZ,
1254   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_OFF,
1255   ])
1256
1257 # SPICE lossy image compression options (valid for both jpeg and zlib-glz)
1258 HT_KVM_SPICE_LOSSY_IMG_COMPR_AUTO = "auto"
1259 HT_KVM_SPICE_LOSSY_IMG_COMPR_NEVER = "never"
1260 HT_KVM_SPICE_LOSSY_IMG_COMPR_ALWAYS = "always"
1261
1262 HT_KVM_SPICE_VALID_LOSSY_IMG_COMPR_OPTIONS = frozenset([
1263   HT_KVM_SPICE_LOSSY_IMG_COMPR_AUTO,
1264   HT_KVM_SPICE_LOSSY_IMG_COMPR_NEVER,
1265   HT_KVM_SPICE_LOSSY_IMG_COMPR_ALWAYS,
1266   ])
1267
1268 # SPICE video stream detection
1269 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_OFF = "off"
1270 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_ALL = "all"
1271 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_FILTER = "filter"
1272
1273 HT_KVM_SPICE_VALID_VIDEO_STREAM_DETECTION_OPTIONS = frozenset([
1274   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_OFF,
1275   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_ALL,
1276   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_FILTER,
1277   ])
1278
1279 # Security models
1280 HT_SM_NONE = "none"
1281 HT_SM_USER = "user"
1282 HT_SM_POOL = "pool"
1283
1284 HT_KVM_VALID_SM_TYPES = frozenset([HT_SM_NONE, HT_SM_USER, HT_SM_POOL])
1285
1286 # Kvm flag values
1287 HT_KVM_ENABLED = "enabled"
1288 HT_KVM_DISABLED = "disabled"
1289
1290 HT_KVM_FLAG_VALUES = frozenset([HT_KVM_ENABLED, HT_KVM_DISABLED])
1291
1292 # Migration type
1293 HT_MIGRATION_LIVE = "live"
1294 HT_MIGRATION_NONLIVE = "non-live"
1295 HT_MIGRATION_MODES = frozenset([HT_MIGRATION_LIVE, HT_MIGRATION_NONLIVE])
1296
1297 # Cluster Verify steps
1298 VERIFY_NPLUSONE_MEM = "nplusone_mem"
1299 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
1300
1301 # Cluster Verify error classes
1302 CV_TCLUSTER = "cluster"
1303 CV_TNODE = "node"
1304 CV_TINSTANCE = "instance"
1305
1306 # Cluster Verify error codes and documentation
1307 CV_ECLUSTERCFG = \
1308   (CV_TCLUSTER, "ECLUSTERCFG", "Cluster configuration verification failure")
1309 CV_ECLUSTERCERT = \
1310   (CV_TCLUSTER, "ECLUSTERCERT",
1311    "Cluster certificate files verification failure")
1312 CV_ECLUSTERFILECHECK = \
1313   (CV_TCLUSTER, "ECLUSTERFILECHECK",
1314    "Cluster configuration verification failure")
1315 CV_ECLUSTERDANGLINGNODES = \
1316   (CV_TNODE, "ECLUSTERDANGLINGNODES",
1317    "Some nodes belong to non-existing groups")
1318 CV_ECLUSTERDANGLINGINST = \
1319   (CV_TNODE, "ECLUSTERDANGLINGINST",
1320    "Some instances have a non-existing primary node")
1321 CV_EINSTANCEBADNODE = \
1322   (CV_TINSTANCE, "EINSTANCEBADNODE",
1323    "Instance marked as running lives on an offline node")
1324 CV_EINSTANCEDOWN = \
1325   (CV_TINSTANCE, "EINSTANCEDOWN", "Instance not running on its primary node")
1326 CV_EINSTANCELAYOUT = \
1327   (CV_TINSTANCE, "EINSTANCELAYOUT", "Instance has multiple secondary nodes")
1328 CV_EINSTANCEMISSINGDISK = \
1329   (CV_TINSTANCE, "EINSTANCEMISSINGDISK", "Missing volume on an instance")
1330 CV_EINSTANCEFAULTYDISK = \
1331   (CV_TINSTANCE, "EINSTANCEFAULTYDISK",
1332    "Impossible to retrieve status for a disk")
1333 CV_EINSTANCEWRONGNODE = \
1334   (CV_TINSTANCE, "EINSTANCEWRONGNODE", "Instance running on the wrong node")
1335 CV_EINSTANCESPLITGROUPS = \
1336   (CV_TINSTANCE, "EINSTANCESPLITGROUPS",
1337    "Instance with primary and secondary nodes in different groups")
1338 CV_EINSTANCEPOLICY = \
1339   (CV_TINSTANCE, "EINSTANCEPOLICY",
1340    "Instance does not meet policy")
1341 CV_ENODEDRBD = \
1342   (CV_TNODE, "ENODEDRBD", "Error parsing the DRBD status file")
1343 CV_ENODEDRBDHELPER = \
1344   (CV_TNODE, "ENODEDRBDHELPER", "Error caused by the DRBD helper")
1345 CV_ENODEFILECHECK = \
1346   (CV_TNODE, "ENODEFILECHECK",
1347    "Error retrieving the checksum of the node files")
1348 CV_ENODEHOOKS = \
1349   (CV_TNODE, "ENODEHOOKS", "Communication failure in hooks execution")
1350 CV_ENODEHV = \
1351   (CV_TNODE, "ENODEHV", "Hypervisor parameters verification failure")
1352 CV_ENODELVM = \
1353   (CV_TNODE, "ENODELVM", "LVM-related node error")
1354 CV_ENODEN1 = \
1355   (CV_TNODE, "ENODEN1", "Not enough memory to accommodate instance failovers")
1356 CV_ENODENET = \
1357   (CV_TNODE, "ENODENET", "Network-related node error")
1358 CV_ENODEOS = \
1359   (CV_TNODE, "ENODEOS", "OS-related node error")
1360 CV_ENODEORPHANINSTANCE = \
1361   (CV_TNODE, "ENODEORPHANINSTANCE", "Unknown intance running on a node")
1362 CV_ENODEORPHANLV = \
1363   (CV_TNODE, "ENODEORPHANLV", "Unknown LVM logical volume")
1364 CV_ENODERPC = \
1365   (CV_TNODE, "ENODERPC",
1366    "Error during connection to the primary node of an instance")
1367 CV_ENODESSH = \
1368   (CV_TNODE, "ENODESSH", "SSH-related node error")
1369 CV_ENODEVERSION = \
1370   (CV_TNODE, "ENODEVERSION",
1371    "Protocol version mismatch or Ganeti version mismatch")
1372 CV_ENODESETUP = \
1373   (CV_TNODE, "ENODESETUP", "Node setup error")
1374 CV_ENODETIME = \
1375   (CV_TNODE, "ENODETIME", "Node returned invalid time")
1376 CV_ENODEOOBPATH = \
1377   (CV_TNODE, "ENODEOOBPATH", "Invalid Out Of Band path")
1378 CV_ENODEUSERSCRIPTS = \
1379   (CV_TNODE, "ENODEUSERSCRIPTS", "User scripts not present or not executable")
1380
1381 CV_ALL_ECODES = frozenset([
1382   CV_ECLUSTERCFG,
1383   CV_ECLUSTERCERT,
1384   CV_ECLUSTERFILECHECK,
1385   CV_ECLUSTERDANGLINGNODES,
1386   CV_ECLUSTERDANGLINGINST,
1387   CV_EINSTANCEBADNODE,
1388   CV_EINSTANCEDOWN,
1389   CV_EINSTANCELAYOUT,
1390   CV_EINSTANCEMISSINGDISK,
1391   CV_EINSTANCEFAULTYDISK,
1392   CV_EINSTANCEWRONGNODE,
1393   CV_EINSTANCESPLITGROUPS,
1394   CV_EINSTANCEPOLICY,
1395   CV_ENODEDRBD,
1396   CV_ENODEDRBDHELPER,
1397   CV_ENODEFILECHECK,
1398   CV_ENODEHOOKS,
1399   CV_ENODEHV,
1400   CV_ENODELVM,
1401   CV_ENODEN1,
1402   CV_ENODENET,
1403   CV_ENODEOS,
1404   CV_ENODEORPHANINSTANCE,
1405   CV_ENODEORPHANLV,
1406   CV_ENODERPC,
1407   CV_ENODESSH,
1408   CV_ENODEVERSION,
1409   CV_ENODESETUP,
1410   CV_ENODETIME,
1411   CV_ENODEOOBPATH,
1412   CV_ENODEUSERSCRIPTS,
1413   ])
1414
1415 CV_ALL_ECODES_STRINGS = frozenset(estr for (_, estr, _) in CV_ALL_ECODES)
1416
1417 # Node verify constants
1418 NV_DRBDHELPER = "drbd-helper"
1419 NV_DRBDLIST = "drbd-list"
1420 NV_FILELIST = "filelist"
1421 NV_HVINFO = "hvinfo"
1422 NV_HYPERVISOR = "hypervisor"
1423 NV_HVPARAMS = "hvparms"
1424 NV_INSTANCELIST = "instancelist"
1425 NV_LVLIST = "lvlist"
1426 NV_MASTERIP = "master-ip"
1427 NV_NODELIST = "nodelist"
1428 NV_NODENETTEST = "node-net-test"
1429 NV_NODESETUP = "nodesetup"
1430 NV_OSLIST = "oslist"
1431 NV_PVLIST = "pvlist"
1432 NV_TIME = "time"
1433 NV_VERSION = "version"
1434 NV_VGLIST = "vglist"
1435 NV_VMNODES = "vmnodes"
1436 NV_OOB_PATHS = "oob-paths"
1437 NV_BRIDGES = "bridges"
1438 NV_USERSCRIPTS = "user-scripts"
1439
1440 # Instance status
1441 INSTST_RUNNING = "running"
1442 INSTST_ADMINDOWN = "ADMIN_down"
1443 INSTST_ADMINOFFLINE = "ADMIN_offline"
1444 INSTST_NODEOFFLINE = "ERROR_nodeoffline"
1445 INSTST_NODEDOWN = "ERROR_nodedown"
1446 INSTST_WRONGNODE = "ERROR_wrongnode"
1447 INSTST_ERRORUP = "ERROR_up"
1448 INSTST_ERRORDOWN = "ERROR_down"
1449 INSTST_ALL = frozenset([
1450   INSTST_RUNNING,
1451   INSTST_ADMINDOWN,
1452   INSTST_ADMINOFFLINE,
1453   INSTST_NODEOFFLINE,
1454   INSTST_NODEDOWN,
1455   INSTST_WRONGNODE,
1456   INSTST_ERRORUP,
1457   INSTST_ERRORDOWN,
1458   ])
1459
1460 # Admin states
1461 ADMINST_UP = "up"
1462 ADMINST_DOWN = "down"
1463 ADMINST_OFFLINE = "offline"
1464 ADMINST_ALL = frozenset([
1465   ADMINST_UP,
1466   ADMINST_DOWN,
1467   ADMINST_OFFLINE,
1468   ])
1469
1470 # Node roles
1471 NR_REGULAR = "R"
1472 NR_MASTER = "M"
1473 NR_MCANDIDATE = "C"
1474 NR_DRAINED = "D"
1475 NR_OFFLINE = "O"
1476 NR_ALL = frozenset([
1477   NR_REGULAR,
1478   NR_MASTER,
1479   NR_MCANDIDATE,
1480   NR_DRAINED,
1481   NR_OFFLINE,
1482   ])
1483
1484 # SSL certificate check constants (in days)
1485 SSL_CERT_EXPIRATION_WARN = 30
1486 SSL_CERT_EXPIRATION_ERROR = 7
1487
1488 # Allocator framework constants
1489 IALLOCATOR_VERSION = 2
1490 IALLOCATOR_DIR_IN = "in"
1491 IALLOCATOR_DIR_OUT = "out"
1492 VALID_IALLOCATOR_DIRECTIONS = frozenset([
1493   IALLOCATOR_DIR_IN,
1494   IALLOCATOR_DIR_OUT,
1495   ])
1496 IALLOCATOR_MODE_ALLOC = "allocate"
1497 IALLOCATOR_MODE_RELOC = "relocate"
1498 IALLOCATOR_MODE_CHG_GROUP = "change-group"
1499 IALLOCATOR_MODE_NODE_EVAC = "node-evacuate"
1500 VALID_IALLOCATOR_MODES = frozenset([
1501   IALLOCATOR_MODE_ALLOC,
1502   IALLOCATOR_MODE_RELOC,
1503   IALLOCATOR_MODE_CHG_GROUP,
1504   IALLOCATOR_MODE_NODE_EVAC,
1505   ])
1506 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
1507
1508 IALLOCATOR_NEVAC_PRI = "primary-only"
1509 IALLOCATOR_NEVAC_SEC = "secondary-only"
1510 IALLOCATOR_NEVAC_ALL = "all"
1511 IALLOCATOR_NEVAC_MODES = frozenset([
1512   IALLOCATOR_NEVAC_PRI,
1513   IALLOCATOR_NEVAC_SEC,
1514   IALLOCATOR_NEVAC_ALL,
1515   ])
1516
1517 # Node evacuation
1518 NODE_EVAC_PRI = "primary-only"
1519 NODE_EVAC_SEC = "secondary-only"
1520 NODE_EVAC_ALL = "all"
1521 NODE_EVAC_MODES = frozenset([
1522   NODE_EVAC_PRI,
1523   NODE_EVAC_SEC,
1524   NODE_EVAC_ALL,
1525   ])
1526
1527 # Job queue
1528 JOB_QUEUE_VERSION = 1
1529 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
1530 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
1531 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
1532 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
1533 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
1534 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
1535
1536 JOB_ID_TEMPLATE = r"\d+"
1537 JOB_FILE_RE = re.compile(r"^job-(%s)$" % JOB_ID_TEMPLATE)
1538
1539 # unchanged job return
1540 JOB_NOTCHANGED = "nochange"
1541
1542 # Job status
1543 JOB_STATUS_QUEUED = "queued"
1544 JOB_STATUS_WAITING = "waiting"
1545 JOB_STATUS_CANCELING = "canceling"
1546 JOB_STATUS_RUNNING = "running"
1547 JOB_STATUS_CANCELED = "canceled"
1548 JOB_STATUS_SUCCESS = "success"
1549 JOB_STATUS_ERROR = "error"
1550 JOBS_FINALIZED = frozenset([
1551   JOB_STATUS_CANCELED,
1552   JOB_STATUS_SUCCESS,
1553   JOB_STATUS_ERROR,
1554   ])
1555 JOB_STATUS_ALL = frozenset([
1556   JOB_STATUS_QUEUED,
1557   JOB_STATUS_WAITING,
1558   JOB_STATUS_CANCELING,
1559   JOB_STATUS_RUNNING,
1560   ]) | JOBS_FINALIZED
1561
1562 # OpCode status
1563 # not yet finalized
1564 OP_STATUS_QUEUED = "queued"
1565 OP_STATUS_WAITING = "waiting"
1566 OP_STATUS_CANCELING = "canceling"
1567 OP_STATUS_RUNNING = "running"
1568 # finalized
1569 OP_STATUS_CANCELED = "canceled"
1570 OP_STATUS_SUCCESS = "success"
1571 OP_STATUS_ERROR = "error"
1572 OPS_FINALIZED = frozenset([
1573   OP_STATUS_CANCELED,
1574   OP_STATUS_SUCCESS,
1575   OP_STATUS_ERROR
1576   ])
1577
1578 # OpCode priority
1579 OP_PRIO_LOWEST = +19
1580 OP_PRIO_HIGHEST = -20
1581
1582 OP_PRIO_LOW = +10
1583 OP_PRIO_NORMAL = 0
1584 OP_PRIO_HIGH = -10
1585
1586 OP_PRIO_SUBMIT_VALID = frozenset([
1587   OP_PRIO_LOW,
1588   OP_PRIO_NORMAL,
1589   OP_PRIO_HIGH,
1590   ])
1591
1592 OP_PRIO_DEFAULT = OP_PRIO_NORMAL
1593
1594 # Lock recalculate mode
1595 LOCKS_REPLACE = "replace"
1596 LOCKS_APPEND = "append"
1597
1598 # Lock timeout (sum) before we should go into blocking acquire (still
1599 # can be reset by priority change); computed as max time (10 hours)
1600 # before we should actually go into blocking acquire given that we
1601 # start from default priority level; in seconds
1602 # TODO
1603 LOCK_ATTEMPTS_TIMEOUT = 10 * 3600 / (OP_PRIO_DEFAULT - OP_PRIO_HIGHEST)
1604 LOCK_ATTEMPTS_MAXWAIT = 15.0
1605 LOCK_ATTEMPTS_MINWAIT = 1.0
1606
1607 # Execution log types
1608 ELOG_MESSAGE = "message"
1609 ELOG_REMOTE_IMPORT = "remote-import"
1610 ELOG_JQUEUE_TEST = "jqueue-test"
1611
1612 # /etc/hosts modification
1613 ETC_HOSTS_ADD = "add"
1614 ETC_HOSTS_REMOVE = "remove"
1615
1616 # Job queue test
1617 JQT_MSGPREFIX = "TESTMSG="
1618 JQT_EXPANDNAMES = "expandnames"
1619 JQT_EXEC = "exec"
1620 JQT_LOGMSG = "logmsg"
1621 JQT_STARTMSG = "startmsg"
1622 JQT_ALL = frozenset([
1623   JQT_EXPANDNAMES,
1624   JQT_EXEC,
1625   JQT_LOGMSG,
1626   JQT_STARTMSG,
1627   ])
1628
1629 # Query resources
1630 QR_CLUSTER = "cluster"
1631 QR_INSTANCE = "instance"
1632 QR_NODE = "node"
1633 QR_LOCK = "lock"
1634 QR_GROUP = "group"
1635 QR_OS = "os"
1636 QR_JOB = "job"
1637 QR_EXPORT = "export"
1638 QR_NETWORK = "network"
1639
1640 #: List of resources which can be queried using L{opcodes.OpQuery}
1641 QR_VIA_OP = frozenset([
1642   QR_CLUSTER,
1643   QR_INSTANCE,
1644   QR_NODE,
1645   QR_GROUP,
1646   QR_OS,
1647   QR_EXPORT,
1648   QR_NETWORK,
1649   ])
1650
1651 #: List of resources which can be queried using Local UniX Interface
1652 QR_VIA_LUXI = QR_VIA_OP.union([
1653   QR_LOCK,
1654   QR_JOB,
1655   ])
1656
1657 #: List of resources which can be queried using RAPI
1658 QR_VIA_RAPI = QR_VIA_LUXI
1659
1660 # Query field types
1661 QFT_UNKNOWN = "unknown"
1662 QFT_TEXT = "text"
1663 QFT_BOOL = "bool"
1664 QFT_NUMBER = "number"
1665 QFT_UNIT = "unit"
1666 QFT_TIMESTAMP = "timestamp"
1667 QFT_OTHER = "other"
1668
1669 #: All query field types
1670 QFT_ALL = frozenset([
1671   QFT_UNKNOWN,
1672   QFT_TEXT,
1673   QFT_BOOL,
1674   QFT_NUMBER,
1675   QFT_UNIT,
1676   QFT_TIMESTAMP,
1677   QFT_OTHER,
1678   ])
1679
1680 # Query result field status (don't change or reuse values as they're used by
1681 # clients)
1682 #: Normal field status
1683 RS_NORMAL = 0
1684 #: Unknown field
1685 RS_UNKNOWN = 1
1686 #: No data (e.g. RPC error), can be used instead of L{RS_OFFLINE}
1687 RS_NODATA = 2
1688 #: Value unavailable/unsupported for item; if this field is supported
1689 #: but we cannot get the data for the moment, RS_NODATA or
1690 #: RS_OFFLINE should be used
1691 RS_UNAVAIL = 3
1692 #: Resource marked offline
1693 RS_OFFLINE = 4
1694
1695 RS_ALL = frozenset([
1696   RS_NORMAL,
1697   RS_UNKNOWN,
1698   RS_NODATA,
1699   RS_UNAVAIL,
1700   RS_OFFLINE,
1701   ])
1702
1703 #: Dictionary with special field cases and their verbose/terse formatting
1704 RSS_DESCRIPTION = {
1705   RS_UNKNOWN: ("(unknown)", "??"),
1706   RS_NODATA: ("(nodata)", "?"),
1707   RS_OFFLINE: ("(offline)", "*"),
1708   RS_UNAVAIL: ("(unavail)", "-"),
1709   }
1710
1711 # max dynamic devices
1712 MAX_NICS = 8
1713 MAX_DISKS = 16
1714
1715 # SSCONF file prefix
1716 SSCONF_FILEPREFIX = "ssconf_"
1717 # SSCONF keys
1718 SS_CLUSTER_NAME = "cluster_name"
1719 SS_CLUSTER_TAGS = "cluster_tags"
1720 SS_FILE_STORAGE_DIR = "file_storage_dir"
1721 SS_SHARED_FILE_STORAGE_DIR = "shared_file_storage_dir"
1722 SS_MASTER_CANDIDATES = "master_candidates"
1723 SS_MASTER_CANDIDATES_IPS = "master_candidates_ips"
1724 SS_MASTER_IP = "master_ip"
1725 SS_MASTER_NETDEV = "master_netdev"
1726 SS_MASTER_NETMASK = "master_netmask"
1727 SS_MASTER_NODE = "master_node"
1728 SS_NODE_LIST = "node_list"
1729 SS_NODE_PRIMARY_IPS = "node_primary_ips"
1730 SS_NODE_SECONDARY_IPS = "node_secondary_ips"
1731 SS_OFFLINE_NODES = "offline_nodes"
1732 SS_ONLINE_NODES = "online_nodes"
1733 SS_PRIMARY_IP_FAMILY = "primary_ip_family"
1734 SS_INSTANCE_LIST = "instance_list"
1735 SS_RELEASE_VERSION = "release_version"
1736 SS_HYPERVISOR_LIST = "hypervisor_list"
1737 SS_MAINTAIN_NODE_HEALTH = "maintain_node_health"
1738 SS_UID_POOL = "uid_pool"
1739 SS_NODEGROUPS = "nodegroups"
1740 SS_NETWORKS = "networks"
1741
1742 SS_FILE_PERMS = 0444
1743
1744 # cluster wide default parameters
1745 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
1746
1747 HVC_DEFAULTS = {
1748   HT_XEN_PVM: {
1749     HV_USE_BOOTLOADER: False,
1750     HV_BOOTLOADER_PATH: XEN_BOOTLOADER,
1751     HV_BOOTLOADER_ARGS: "",
1752     HV_KERNEL_PATH: XEN_KERNEL,
1753     HV_INITRD_PATH: "",
1754     HV_ROOT_PATH: "/dev/sda1",
1755     HV_KERNEL_ARGS: "ro",
1756     HV_MIGRATION_PORT: 8002,
1757     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1758     HV_BLOCKDEV_PREFIX: "sd",
1759     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1760     HV_CPU_MASK: CPU_PINNING_ALL,
1761     },
1762   HT_XEN_HVM: {
1763     HV_BOOT_ORDER: "cd",
1764     HV_CDROM_IMAGE_PATH: "",
1765     HV_NIC_TYPE: HT_NIC_RTL8139,
1766     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1767     HV_VNC_BIND_ADDRESS: IP4_ADDRESS_ANY,
1768     HV_VNC_PASSWORD_FILE: VNC_PASSWORD_FILE,
1769     HV_ACPI: True,
1770     HV_PAE: True,
1771     HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
1772     HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
1773     HV_MIGRATION_PORT: 8002,
1774     HV_MIGRATION_MODE: HT_MIGRATION_NONLIVE,
1775     HV_USE_LOCALTIME: False,
1776     HV_BLOCKDEV_PREFIX: "hd",
1777     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1778     HV_CPU_MASK: CPU_PINNING_ALL,
1779     },
1780   HT_KVM: {
1781     HV_KERNEL_PATH: KVM_KERNEL,
1782     HV_INITRD_PATH: "",
1783     HV_KERNEL_ARGS: "ro",
1784     HV_ROOT_PATH: "/dev/vda1",
1785     HV_ACPI: True,
1786     HV_SERIAL_CONSOLE: True,
1787     HV_VNC_BIND_ADDRESS: "",
1788     HV_VNC_TLS: False,
1789     HV_VNC_X509: "",
1790     HV_VNC_X509_VERIFY: False,
1791     HV_VNC_PASSWORD_FILE: "",
1792     HV_KVM_SPICE_BIND: "",
1793     HV_KVM_SPICE_IP_VERSION: IFACE_NO_IP_VERSION_SPECIFIED,
1794     HV_KVM_SPICE_PASSWORD_FILE: "",
1795     HV_KVM_SPICE_LOSSLESS_IMG_COMPR: "",
1796     HV_KVM_SPICE_JPEG_IMG_COMPR: "",
1797     HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: "",
1798     HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: "",
1799     HV_KVM_SPICE_AUDIO_COMPR: True,
1800     HV_KVM_SPICE_USE_TLS: False,
1801     HV_KVM_SPICE_TLS_CIPHERS: OPENSSL_CIPHERS,
1802     HV_KVM_SPICE_USE_VDAGENT: True,
1803     HV_KVM_FLOPPY_IMAGE_PATH: "",
1804     HV_CDROM_IMAGE_PATH: "",
1805     HV_KVM_CDROM2_IMAGE_PATH: "",
1806     HV_BOOT_ORDER: HT_BO_DISK,
1807     HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
1808     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1809     HV_KVM_CDROM_DISK_TYPE: "",
1810     HV_USB_MOUSE: "",
1811     HV_KEYMAP: "",
1812     HV_MIGRATION_PORT: 8102,
1813     HV_MIGRATION_BANDWIDTH: 32, # MiB/s
1814     HV_MIGRATION_DOWNTIME: 30,  # ms
1815     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1816     HV_USE_LOCALTIME: False,
1817     HV_DISK_CACHE: HT_CACHE_DEFAULT,
1818     HV_SECURITY_MODEL: HT_SM_NONE,
1819     HV_SECURITY_DOMAIN: "",
1820     HV_KVM_FLAG: "",
1821     HV_VHOST_NET: False,
1822     HV_KVM_USE_CHROOT: False,
1823     HV_MEM_PATH: "",
1824     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1825     HV_CPU_MASK: CPU_PINNING_ALL,
1826     },
1827   HT_FAKE: {
1828     },
1829   HT_CHROOT: {
1830     HV_INIT_SCRIPT: "/ganeti-chroot",
1831     },
1832   HT_LXC: {
1833     HV_CPU_MASK: "",
1834     },
1835   }
1836
1837 HVC_GLOBALS = frozenset([
1838   HV_MIGRATION_PORT,
1839   HV_MIGRATION_BANDWIDTH,
1840   HV_MIGRATION_MODE,
1841   ])
1842
1843 BEC_DEFAULTS = {
1844   BE_MINMEM: 128,
1845   BE_MAXMEM: 128,
1846   BE_VCPUS: 1,
1847   BE_AUTO_BALANCE: True,
1848   BE_ALWAYS_FAILOVER: False,
1849   BE_SPINDLE_USE: 1,
1850   }
1851
1852 NDC_DEFAULTS = {
1853   ND_OOB_PROGRAM: None,
1854   ND_SPINDLE_COUNT: 1,
1855   }
1856
1857 DISK_LD_DEFAULTS = {
1858   LD_DRBD8: {
1859     LDP_RESYNC_RATE: CLASSIC_DRBD_SYNC_SPEED,
1860     LDP_BARRIERS: _autoconf.DRBD_BARRIERS,
1861     LDP_NO_META_FLUSH: _autoconf.DRBD_NO_META_FLUSH,
1862     LDP_DEFAULT_METAVG: DEFAULT_VG,
1863     LDP_DISK_CUSTOM: "",
1864     LDP_NET_CUSTOM: "",
1865     LDP_DYNAMIC_RESYNC: False,
1866
1867     # The default values for the DRBD dynamic resync speed algorithm are taken
1868     # from the drbsetup 8.3.11 man page, except for c-plan-ahead (that we
1869     # don't need to set to 0, because we have a separate option to enable it)
1870     # and for c-max-rate, that we cap to the default value for the static resync
1871     # rate.
1872     LDP_PLAN_AHEAD: 20, # ds
1873     LDP_FILL_TARGET: 0, # sectors
1874     LDP_DELAY_TARGET: 1, # ds
1875     LDP_MAX_RATE: CLASSIC_DRBD_SYNC_SPEED, # KiB/s
1876     LDP_MIN_RATE: 4 * 1024, # KiB/s
1877     },
1878   LD_LV: {
1879     LDP_STRIPES: _autoconf.LVM_STRIPECOUNT
1880     },
1881   LD_FILE: {
1882     },
1883   LD_BLOCKDEV: {
1884     },
1885   LD_RBD: {
1886     LDP_POOL: "rbd"
1887     },
1888   }
1889
1890 # readability shortcuts
1891 _LV_DEFAULTS = DISK_LD_DEFAULTS[LD_LV]
1892 _DRBD_DEFAULTS = DISK_LD_DEFAULTS[LD_DRBD8]
1893
1894 DISK_DT_DEFAULTS = {
1895   DT_PLAIN: {
1896     LV_STRIPES: DISK_LD_DEFAULTS[LD_LV][LDP_STRIPES],
1897     },
1898   DT_DRBD8: {
1899     DRBD_RESYNC_RATE: _DRBD_DEFAULTS[LDP_RESYNC_RATE],
1900     DRBD_DATA_STRIPES: _LV_DEFAULTS[LDP_STRIPES],
1901     DRBD_META_STRIPES: _LV_DEFAULTS[LDP_STRIPES],
1902     DRBD_DISK_BARRIERS: _DRBD_DEFAULTS[LDP_BARRIERS],
1903     DRBD_META_BARRIERS: _DRBD_DEFAULTS[LDP_NO_META_FLUSH],
1904     DRBD_DEFAULT_METAVG: _DRBD_DEFAULTS[LDP_DEFAULT_METAVG],
1905     DRBD_DISK_CUSTOM: _DRBD_DEFAULTS[LDP_DISK_CUSTOM],
1906     DRBD_NET_CUSTOM: _DRBD_DEFAULTS[LDP_NET_CUSTOM],
1907     DRBD_DYNAMIC_RESYNC: _DRBD_DEFAULTS[LDP_DYNAMIC_RESYNC],
1908     DRBD_PLAN_AHEAD: _DRBD_DEFAULTS[LDP_PLAN_AHEAD],
1909     DRBD_FILL_TARGET: _DRBD_DEFAULTS[LDP_FILL_TARGET],
1910     DRBD_DELAY_TARGET: _DRBD_DEFAULTS[LDP_DELAY_TARGET],
1911     DRBD_MAX_RATE: _DRBD_DEFAULTS[LDP_MAX_RATE],
1912     DRBD_MIN_RATE: _DRBD_DEFAULTS[LDP_MIN_RATE],
1913     },
1914   DT_DISKLESS: {
1915     },
1916   DT_FILE: {
1917     },
1918   DT_SHARED_FILE: {
1919     },
1920   DT_BLOCK: {
1921     },
1922   DT_RBD: {
1923     RBD_POOL: DISK_LD_DEFAULTS[LD_RBD][LDP_POOL]
1924     },
1925   }
1926
1927 # we don't want to export the shortcuts
1928 del _LV_DEFAULTS, _DRBD_DEFAULTS
1929
1930 NICC_DEFAULTS = {
1931   NIC_MODE: NIC_MODE_BRIDGED,
1932   NIC_LINK: DEFAULT_BRIDGE,
1933   }
1934
1935 # All of the following values are quite arbitrarily - there are no
1936 # "good" defaults, these must be customised per-site
1937 IPOLICY_DEFAULTS = {
1938   ISPECS_MIN: {
1939     ISPEC_MEM_SIZE: 128,
1940     ISPEC_CPU_COUNT: 1,
1941     ISPEC_DISK_COUNT: 1,
1942     ISPEC_DISK_SIZE: 1024,
1943     ISPEC_NIC_COUNT: 1,
1944     ISPEC_SPINDLE_USE: 1,
1945     },
1946   ISPECS_MAX: {
1947     ISPEC_MEM_SIZE: 32768,
1948     ISPEC_CPU_COUNT: 8,
1949     ISPEC_DISK_COUNT: MAX_DISKS,
1950     ISPEC_DISK_SIZE: 1024 * 1024,
1951     ISPEC_NIC_COUNT: MAX_NICS,
1952     ISPEC_SPINDLE_USE: 12,
1953     },
1954   ISPECS_STD: {
1955     ISPEC_MEM_SIZE: 128,
1956     ISPEC_CPU_COUNT: 1,
1957     ISPEC_DISK_COUNT: 1,
1958     ISPEC_DISK_SIZE: 1024,
1959     ISPEC_NIC_COUNT: 1,
1960     ISPEC_SPINDLE_USE: 1,
1961     },
1962   IPOLICY_DTS: DISK_TEMPLATES,
1963   IPOLICY_VCPU_RATIO: 4.0,
1964   IPOLICY_SPINDLE_RATIO: 32.0,
1965   }
1966
1967 MASTER_POOL_SIZE_DEFAULT = 10
1968
1969 CONFD_PROTOCOL_VERSION = 1
1970
1971 CONFD_REQ_PING = 0
1972 CONFD_REQ_NODE_ROLE_BYNAME = 1
1973 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP = 2
1974 CONFD_REQ_CLUSTER_MASTER = 3
1975 CONFD_REQ_NODE_PIP_LIST = 4
1976 CONFD_REQ_MC_PIP_LIST = 5
1977 CONFD_REQ_INSTANCES_IPS_LIST = 6
1978 CONFD_REQ_NODE_DRBD = 7
1979
1980 # Confd request query fields. These are used to narrow down queries.
1981 # These must be strings rather than integers, because json-encoding
1982 # converts them to strings anyway, as they're used as dict-keys.
1983 CONFD_REQQ_LINK = "0"
1984 CONFD_REQQ_IP = "1"
1985 CONFD_REQQ_IPLIST = "2"
1986 CONFD_REQQ_FIELDS = "3"
1987
1988 CONFD_REQFIELD_NAME = "0"
1989 CONFD_REQFIELD_IP = "1"
1990 CONFD_REQFIELD_MNODE_PIP = "2"
1991
1992 CONFD_REQS = frozenset([
1993   CONFD_REQ_PING,
1994   CONFD_REQ_NODE_ROLE_BYNAME,
1995   CONFD_REQ_NODE_PIP_BY_INSTANCE_IP,
1996   CONFD_REQ_CLUSTER_MASTER,
1997   CONFD_REQ_NODE_PIP_LIST,
1998   CONFD_REQ_MC_PIP_LIST,
1999   CONFD_REQ_INSTANCES_IPS_LIST,
2000   CONFD_REQ_NODE_DRBD,
2001   ])
2002
2003 CONFD_REPL_STATUS_OK = 0
2004 CONFD_REPL_STATUS_ERROR = 1
2005 CONFD_REPL_STATUS_NOTIMPLEMENTED = 2
2006
2007 CONFD_REPL_STATUSES = frozenset([
2008   CONFD_REPL_STATUS_OK,
2009   CONFD_REPL_STATUS_ERROR,
2010   CONFD_REPL_STATUS_NOTIMPLEMENTED,
2011   ])
2012
2013 (CONFD_NODE_ROLE_MASTER,
2014  CONFD_NODE_ROLE_CANDIDATE,
2015  CONFD_NODE_ROLE_OFFLINE,
2016  CONFD_NODE_ROLE_DRAINED,
2017  CONFD_NODE_ROLE_REGULAR,
2018  ) = range(5)
2019
2020 # A few common errors for confd
2021 CONFD_ERROR_UNKNOWN_ENTRY = 1
2022 CONFD_ERROR_INTERNAL = 2
2023 CONFD_ERROR_ARGUMENT = 3
2024
2025 # Each request is "salted" by the current timestamp.
2026 # This constants decides how many seconds of skew to accept.
2027 # TODO: make this a default and allow the value to be more configurable
2028 CONFD_MAX_CLOCK_SKEW = 2 * NODE_MAX_CLOCK_SKEW
2029
2030 # When we haven't reloaded the config for more than this amount of seconds, we
2031 # force a test to see if inotify is betraying us.
2032 CONFD_CONFIG_RELOAD_TIMEOUT = 60
2033
2034 # If we receive more than one update in this amount of seconds, we move to
2035 # polling every RATELIMIT seconds, rather than relying on inotify, to be able
2036 # to serve more requests.
2037 CONFD_CONFIG_RELOAD_RATELIMIT = 2
2038
2039 # Magic number prepended to all confd queries.
2040 # This allows us to distinguish different types of confd protocols and handle
2041 # them. For example by changing this we can move the whole payload to be
2042 # compressed, or move away from json.
2043 CONFD_MAGIC_FOURCC = "plj0"
2044
2045 # By default a confd request is sent to the minimum between this number and all
2046 # MCs. 6 was chosen because even in the case of a disastrous 50% response rate,
2047 # we should have enough answers to be able to compare more than one.
2048 CONFD_DEFAULT_REQ_COVERAGE = 6
2049
2050 # Timeout in seconds to expire pending query request in the confd client
2051 # library. We don't actually expect any answer more than 10 seconds after we
2052 # sent a request.
2053 CONFD_CLIENT_EXPIRE_TIMEOUT = 10
2054
2055 # Maximum UDP datagram size.
2056 # On IPv4: 64K - 20 (ip header size) - 8 (udp header size) = 65507
2057 # On IPv6: 64K - 40 (ip6 header size) - 8 (udp header size) = 65487
2058 #   (assuming we can't use jumbo frames)
2059 # We just set this to 60K, which should be enough
2060 MAX_UDP_DATA_SIZE = 61440
2061
2062 # User-id pool minimum/maximum acceptable user-ids.
2063 UIDPOOL_UID_MIN = 0
2064 UIDPOOL_UID_MAX = 2 ** 32 - 1 # Assuming 32 bit user-ids
2065
2066 # Name or path of the pgrep command
2067 PGREP = "pgrep"
2068
2069 # Name of the node group that gets created at cluster init or upgrade
2070 INITIAL_NODE_GROUP_NAME = "default"
2071
2072 # Possible values for NodeGroup.alloc_policy
2073 ALLOC_POLICY_PREFERRED = "preferred"
2074 ALLOC_POLICY_LAST_RESORT = "last_resort"
2075 ALLOC_POLICY_UNALLOCABLE = "unallocable"
2076 VALID_ALLOC_POLICIES = [
2077   ALLOC_POLICY_PREFERRED,
2078   ALLOC_POLICY_LAST_RESORT,
2079   ALLOC_POLICY_UNALLOCABLE,
2080   ]
2081
2082 # Temporary external/shared storage parameters
2083 BLOCKDEV_DRIVER_MANUAL = "manual"
2084
2085 # qemu-img path, required for ovfconverter
2086 QEMUIMG_PATH = _autoconf.QEMUIMG_PATH
2087
2088 # Whether htools was enabled at compilation time
2089 HTOOLS = _autoconf.HTOOLS
2090 # The hail iallocator
2091 IALLOC_HAIL = "hail"
2092
2093 # Fake opcodes for functions that have hooks attached to them via
2094 # backend.RunLocalHooks
2095 FAKE_OP_MASTER_TURNUP = "OP_CLUSTER_IP_TURNUP"
2096 FAKE_OP_MASTER_TURNDOWN = "OP_CLUSTER_IP_TURNDOWN"
2097
2098 # Do not re-export imported modules
2099 del re, _vcsversion, _autoconf, socket