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

   1 #
   2 #
   3
   4 # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Google Inc.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful, but
  12 # WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 # 02110-1301, USA.
  20
  21
  22 """Module holding different constants."""
  23
  24 import re
  25
  26 from ganeti import _autoconf
  27 from ganeti import _vcsversion
  28
  29 # various versions
  30 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
  31 OS_API_V10 = 10
  32 OS_API_V15 = 15
  33 OS_API_V20 = 20
  34 OS_API_VERSIONS = frozenset([OS_API_V10, OS_API_V15, OS_API_V20])
  35 VCS_VERSION = _vcsversion.VCS_VERSION
  36 EXPORT_VERSION = 0
  37 RAPI_VERSION = 2
  38
  39
  40 # Format for CONFIG_VERSION:
  41 #   01 03 0123 = 01030123
  42 #   ^^ ^^ ^^^^
  43 #   |  |  + Configuration version/revision
  44 #   |  + Minor version
  45 #   + Major version
  46 #
  47 # It stored as an integer. Make sure not to write an octal number.
  48
  49 # BuildVersion and SplitVersion must be in here because we can't import other
  50 # modules. The cfgupgrade tool must be able to read and write version numbers
  51 # and thus requires these functions. To avoid code duplication, they're kept in
  52 # here.
  53
  54 def BuildVersion(major, minor, revision):
  55   """Calculates int version number from major, minor and revision numbers.
  56
  57   Returns: int representing version number
  58
  59   """
  60   assert isinstance(major, int)
  61   assert isinstance(minor, int)
  62   assert isinstance(revision, int)
  63   return (1000000 * major +
  64             10000 * minor +
  65                 1 * revision)
  66
  67
  68 def SplitVersion(version):
  69   """Splits version number stored in an int.
  70
  71   Returns: tuple; (major, minor, revision)
  72
  73   """
  74   assert isinstance(version, int)
  75
  76   (major, remainder) = divmod(version, 1000000)
  77   (minor, revision) = divmod(remainder, 10000)
  78
  79   return (major, minor, revision)
  80
  81
  82 CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
  83 CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
  84 CONFIG_REVISION = 0
  85 CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
  86
  87 #: RPC protocol version
  88 PROTOCOL_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, 0)
  89
  90 # user separation
  91 DAEMONS_GROUP = _autoconf.DAEMONS_GROUP
  92 ADMIN_GROUP = _autoconf.ADMIN_GROUP
  93 MASTERD_USER = _autoconf.MASTERD_USER
  94 MASTERD_GROUP = _autoconf.MASTERD_GROUP
  95 RAPI_USER = _autoconf.RAPI_USER
  96 RAPI_GROUP = _autoconf.RAPI_GROUP
  97 CONFD_USER = _autoconf.CONFD_USER
  98 CONFD_GROUP = _autoconf.CONFD_GROUP
  99 NODED_USER = _autoconf.NODED_USER
 100 NODED_GROUP = _autoconf.NODED_GROUP
 101
 102 # cpu pinning separators and constants
 103 CPU_PINNING_SEP = ":"
 104 CPU_PINNING_ALL = "all"
 105 # internal representation of "all"
 106 CPU_PINNING_ALL_VAL = -1
 107 # one "all" entry in a CPU list means CPU pinning is off
 108 CPU_PINNING_OFF = [CPU_PINNING_ALL_VAL]
 109
 110 # A Xen-specific implementation detail - there is no way to actually say
 111 # "use any cpu for pinning" in a Xen configuration file, as opposed to the
 112 # command line, where you can say "xm vcpu-pin <domain> <vcpu> all".
 113 # The workaround used in Xen is "0-63" (see source code function
 114 # xm_vcpu_pin in <xen-source>/tools/python/xen/xm/main.py).
 115 # To support future changes, the following constant is treated as a
 116 # blackbox string that simply means use-any-cpu-for-pinning-under-xen.
 117 CPU_PINNING_ALL_XEN = "0-63"
 118
 119 # A KVM-specific implementation detail - the following value is used
 120 # to set CPU affinity to all processors (#0 through #31), per taskset
 121 # man page.
 122 CPU_PINNING_ALL_KVM = 0xFFFFFFFF
 123
 124 # Wipe
 125 DD_CMD = "dd"
 126 WIPE_BLOCK_SIZE = 1024 ** 2
 127 MAX_WIPE_CHUNK = 1024 # 1GB
 128 MIN_WIPE_CHUNK_PERCENT = 10
 129
 130
 131 # file paths
 132 DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti"
 133 RUN_DIR = _autoconf.LOCALSTATEDIR + "/run"
 134 RUN_GANETI_DIR = RUN_DIR + "/ganeti"
 135 BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache"
 136 DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks"
 137 RUN_DIRS_MODE = 0775
 138 SOCKET_DIR = RUN_GANETI_DIR + "/socket"
 139 SECURE_DIR_MODE = 0700
 140 SECURE_FILE_MODE = 0600
 141 SOCKET_DIR_MODE = 0750
 142 CRYPTO_KEYS_DIR = RUN_GANETI_DIR + "/crypto"
 143 CRYPTO_KEYS_DIR_MODE = SECURE_DIR_MODE
 144 IMPORT_EXPORT_DIR = RUN_GANETI_DIR + "/import-export"
 145 IMPORT_EXPORT_DIR_MODE = 0755
 146 ADOPTABLE_BLOCKDEV_ROOT = "/dev/disk/"
 147 # keep RUN_GANETI_DIR first here, to make sure all get created when the node
 148 # daemon is started (this takes care of RUN_DIR being tmpfs)
 149 SUB_RUN_DIRS = [
 150   RUN_GANETI_DIR,
 151   BDEV_CACHE_DIR,
 152   DISK_LINKS_DIR,
 153   ]
 154 LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock"
 155 SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock"
 156 # User-id pool lock directory
 157 # The user-ids that are in use have a corresponding lock file in this directory
 158 UIDPOOL_LOCKDIR = RUN_GANETI_DIR + "/uid-pool"
 159 CLUSTER_CONF_FILE = DATA_DIR + "/config.data"
 160 NODED_CERT_FILE = DATA_DIR + "/server.pem"
 161 RAPI_CERT_FILE = DATA_DIR + "/rapi.pem"
 162 CONFD_HMAC_KEY = DATA_DIR + "/hmac.key"
 163 SPICE_CERT_FILE = DATA_DIR + "/spice.pem"
 164 SPICE_CACERT_FILE = DATA_DIR + "/spice-ca.pem"
 165 CLUSTER_DOMAIN_SECRET_FILE = DATA_DIR + "/cluster-domain-secret"
 166 INSTANCE_STATUS_FILE = RUN_GANETI_DIR + "/instance-status"
 167 SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts"
 168 RAPI_USERS_FILE = DATA_DIR + "/rapi/users"
 169 QUEUE_DIR = DATA_DIR + "/queue"
 170 DAEMON_UTIL = _autoconf.PKGLIBDIR + "/daemon-util"
 171 SETUP_SSH = _autoconf.TOOLSDIR + "/setup-ssh"
 172 KVM_IFUP = _autoconf.PKGLIBDIR + "/kvm-ifup"
 173 KVM_CONSOLE_WRAPPER = _autoconf.PKGLIBDIR + "/tools/kvm-console-wrapper"
 174 XM_CONSOLE_WRAPPER = _autoconf.PKGLIBDIR + "/tools/xm-console-wrapper"
 175 ETC_HOSTS = "/etc/hosts"
 176 DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
 177 DEFAULT_SHARED_FILE_STORAGE_DIR = _autoconf.SHARED_FILE_STORAGE_DIR
 178 ENABLE_FILE_STORAGE = _autoconf.ENABLE_FILE_STORAGE
 179 ENABLE_SHARED_FILE_STORAGE = _autoconf.ENABLE_SHARED_FILE_STORAGE
 180 SYSCONFDIR = _autoconf.SYSCONFDIR
 181 TOOLSDIR = _autoconf.TOOLSDIR
 182 CONF_DIR = SYSCONFDIR + "/ganeti"
 183 USER_SCRIPTS_DIR = CONF_DIR + "/scripts"
 184 ENABLE_CONFD = _autoconf.ENABLE_CONFD
 185
 186 #: Lock file for watcher, locked in shared mode by watcher; lock in exclusive
 187 # mode to block watcher (see L{cli._RunWhileClusterStoppedHelper.Call}
 188 WATCHER_LOCK_FILE = LOCK_DIR + "/ganeti-watcher.lock"
 189
 190 #: Status file for per-group watcher, locked in exclusive mode by watcher
 191 WATCHER_GROUP_STATE_FILE = DATA_DIR + "/watcher.%s.data"
 192
 193 #: File for per-group instance status, merged into L{INSTANCE_STATUS_FILE} by
 194 #: per-group processes
 195 WATCHER_GROUP_INSTANCE_STATUS_FILE = DATA_DIR + "/watcher.%s.instance-status"
 196
 197 #: File containing Unix timestamp until which watcher should be paused
 198 WATCHER_PAUSEFILE = DATA_DIR + "/watcher.pause"
 199
 200 # Master IP address setup scripts paths (default and user-provided)
 201 DEFAULT_MASTER_SETUP_SCRIPT = TOOLSDIR + "/master-ip-setup"
 202 EXTERNAL_MASTER_SETUP_SCRIPT = USER_SCRIPTS_DIR + "/master-ip-setup"
 203
 204 ALL_CERT_FILES = frozenset([
 205   NODED_CERT_FILE,
 206   RAPI_CERT_FILE,
 207   SPICE_CERT_FILE,
 208   SPICE_CACERT_FILE,
 209   ])
 210
 211 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 212
 213 NODED = "ganeti-noded"
 214 CONFD = "ganeti-confd"
 215 RAPI = "ganeti-rapi"
 216 MASTERD = "ganeti-masterd"
 217 # used in the ganeti-nbma project
 218 NLD = "ganeti-nld"
 219
 220 DAEMONS_PORTS = {
 221   # daemon-name: ("proto", "default-port")
 222   NODED: ("tcp", 1811),
 223   CONFD: ("udp", 1814),
 224   RAPI: ("tcp", 5080),
 225   "ssh": ("tcp", 22),
 226   # used in the ganeti-nbma project
 227   NLD: ("udp", 1816),
 228 }
 229 DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
 230 DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
 231 DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
 232 # used in the ganeti-nbma project
 233 DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
 234
 235 FIRST_DRBD_PORT = 11000
 236 LAST_DRBD_PORT = 14999
 237 MASTER_SCRIPT = "ganeti-master"
 238
 239 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
 240 DAEMONS_LOGFILES = {
 241   # "daemon-name": "logfile"
 242   NODED: LOG_DIR + "node-daemon.log",
 243   CONFD: LOG_DIR + "conf-daemon.log",
 244   RAPI: LOG_DIR + "rapi-daemon.log",
 245   MASTERD: LOG_DIR + "master-daemon.log",
 246   # used in the ganeti-nbma project
 247   NLD: LOG_DIR + "nl-daemon.log",
 248   }
 249
 250 LOG_OS_DIR = LOG_DIR + "os"
 251 LOG_WATCHER = LOG_DIR + "watcher.log"
 252 LOG_COMMANDS = LOG_DIR + "commands.log"
 253 LOG_BURNIN = LOG_DIR + "burnin.log"
 254 LOG_SETUP_SSH = LOG_DIR + "setup-ssh.log"
 255
 256 DEV_CONSOLE = "/dev/console"
 257
 258 PROC_MOUNTS = "/proc/mounts"
 259
 260 # Local UniX Interface related constants
 261 LUXI_EOM = "\3"
 262 LUXI_VERSION = CONFIG_VERSION
 263
 264 # one of "no", "yes", "only"
 265 SYSLOG_USAGE = _autoconf.SYSLOG_USAGE
 266 SYSLOG_NO = "no"
 267 SYSLOG_YES = "yes"
 268 SYSLOG_ONLY = "only"
 269 SYSLOG_SOCKET = "/dev/log"
 270
 271 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
 272 EXPORT_DIR = _autoconf.EXPORT_DIR
 273
 274 EXPORT_CONF_FILE = "config.ini"
 275
 276 XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
 277 XEN_KERNEL = _autoconf.XEN_KERNEL
 278 XEN_INITRD = _autoconf.XEN_INITRD
 279 XEN_CMD = "xm"
 280
 281 KVM_PATH = _autoconf.KVM_PATH
 282 SOCAT_PATH = _autoconf.SOCAT_PATH
 283 SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
 284 SOCAT_USE_COMPRESS = _autoconf.SOCAT_USE_COMPRESS
 285 SOCAT_ESCAPE_CODE = "0x1d"
 286
 287 #: Console as SSH command
 288 CONS_SSH = "ssh"
 289
 290 #: Console as VNC server
 291 CONS_VNC = "vnc"
 292
 293 #: Console as SPICE server
 294 CONS_SPICE = "spice"
 295
 296 #: Display a message for console access
 297 CONS_MESSAGE = "msg"
 298
 299 #: All console types
 300 CONS_ALL = frozenset([CONS_SSH, CONS_VNC, CONS_SPICE, CONS_MESSAGE])
 301
 302 # For RSA keys more bits are better, but they also make operations more
 303 # expensive. NIST SP 800-131 recommends a minimum of 2048 bits from the year
 304 # 2010 on.
 305 RSA_KEY_BITS = 2048
 306
 307 # Ciphers allowed for SSL connections. For the format, see ciphers(1). A better
 308 # way to disable ciphers would be to use the exclamation mark (!), but socat
 309 # versions below 1.5 can't parse exclamation marks in options properly. When
 310 # modifying the ciphers, ensure not to accidentially add something after it's
 311 # been removed. Use the "openssl" utility to check the allowed ciphers, e.g.
 312 # "openssl ciphers -v HIGH:-DES".
 313 OPENSSL_CIPHERS = "HIGH:-DES:-3DES:-EXPORT:-ADH"
 314
 315 # Digest used to sign certificates ("openssl x509" uses SHA1 by default)
 316 X509_CERT_SIGN_DIGEST = "SHA1"
 317
 318 # Default validity of certificates in days
 319 X509_CERT_DEFAULT_VALIDITY = 365 * 5
 320
 321 # commonName (CN) used in certificates
 322 X509_CERT_CN = "ganeti.example.com"
 323
 324 X509_CERT_SIGNATURE_HEADER = "X-Ganeti-Signature"
 325
 326 IMPORT_EXPORT_DAEMON = _autoconf.PKGLIBDIR + "/import-export"
 327
 328 # Import/export daemon mode
 329 IEM_IMPORT = "import"
 330 IEM_EXPORT = "export"
 331
 332 # Import/export transport compression
 333 IEC_NONE = "none"
 334 IEC_GZIP = "gzip"
 335 IEC_ALL = frozenset([
 336   IEC_NONE,
 337   IEC_GZIP,
 338   ])
 339
 340 IE_CUSTOM_SIZE = "fd"
 341
 342 IE_MAGIC_RE = re.compile(r"^[-_.a-zA-Z0-9]{5,100}$")
 343
 344 # Import/export I/O
 345 # Direct file I/O, equivalent to a shell's I/O redirection using '<' or '>'
 346 IEIO_FILE = "file"
 347 # Raw block device I/O using "dd"
 348 IEIO_RAW_DISK = "raw"
 349 # OS definition import/export script
 350 IEIO_SCRIPT = "script"
 351
 352 VALUE_DEFAULT = "default"
 353 VALUE_AUTO = "auto"
 354 VALUE_GENERATE = "generate"
 355 VALUE_NONE = "none"
 356 VALUE_TRUE = "true"
 357 VALUE_FALSE = "false"
 358
 359 # External script validation mask
 360 EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")
 361
 362 # hooks-related constants
 363 HOOKS_BASE_DIR = CONF_DIR + "/hooks"
 364 HOOKS_PHASE_PRE = "pre"
 365 HOOKS_PHASE_POST = "post"
 366 HOOKS_NAME_CFGUPDATE = "config-update"
 367 HOOKS_NAME_WATCHER = "watcher"
 368 HOOKS_VERSION = 2
 369 HOOKS_PATH = "/sbin:/bin:/usr/sbin:/usr/bin"
 370
 371 # hooks subject type (what object type does the LU deal with)
 372 HTYPE_CLUSTER = "CLUSTER"
 373 HTYPE_NODE = "NODE"
 374 HTYPE_GROUP = "GROUP"
 375 HTYPE_INSTANCE = "INSTANCE"
 376
 377 HKR_SKIP = 0
 378 HKR_FAIL = 1
 379 HKR_SUCCESS = 2
 380
 381 # Storage types
 382 ST_FILE = "file"
 383 ST_LVM_PV = "lvm-pv"
 384 ST_LVM_VG = "lvm-vg"
 385
 386 # Storage fields
 387 # first two are valid in LU context only, not passed to backend
 388 SF_NODE = "node"
 389 SF_TYPE = "type"
 390 # and the rest are valid in backend
 391 SF_NAME = "name"
 392 SF_SIZE = "size"
 393 SF_FREE = "free"
 394 SF_USED = "used"
 395 SF_ALLOCATABLE = "allocatable"
 396
 397 # Storage operations
 398 SO_FIX_CONSISTENCY = "fix-consistency"
 399
 400 # Available fields per storage type
 401 VALID_STORAGE_FIELDS = frozenset([
 402   SF_NAME,
 403   SF_TYPE,
 404   SF_SIZE,
 405   SF_USED,
 406   SF_FREE,
 407   SF_ALLOCATABLE
 408   ])
 409
 410 VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
 411
 412 MODIFIABLE_STORAGE_FIELDS = {
 413   ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
 414   }
 415
 416 VALID_STORAGE_OPERATIONS = {
 417   ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
 418   }
 419
 420 # Local disk status
 421 # Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
 422 (LDS_OKAY,
 423  LDS_UNKNOWN,
 424  LDS_FAULTY) = range(1, 4)
 425
 426 # disk template types
 427 DT_DISKLESS = "diskless"
 428 DT_PLAIN = "plain"
 429 DT_DRBD8 = "drbd"
 430 DT_FILE = "file"
 431 DT_SHARED_FILE = "sharedfile"
 432 DT_BLOCK = "blockdev"
 433 DT_RBD = "rbd"
 434
 435 # the set of network-mirrored disk templates
 436 DTS_INT_MIRROR = frozenset([DT_DRBD8])
 437
 438 # the set of externally-mirrored disk templates (e.g. SAN, NAS)
 439 DTS_EXT_MIRROR = frozenset([DT_SHARED_FILE, DT_BLOCK, DT_RBD])
 440
 441 # the set of non-lvm-based disk templates
 442 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE, DT_SHARED_FILE,
 443                          DT_BLOCK, DT_RBD])
 444
 445 # the set of disk templates which can be grown
 446 DTS_GROWABLE = frozenset([DT_PLAIN, DT_DRBD8, DT_FILE, DT_SHARED_FILE, DT_RBD])
 447
 448 # the set of disk templates that allow adoption
 449 DTS_MAY_ADOPT = frozenset([DT_PLAIN, DT_BLOCK])
 450
 451 # the set of disk templates that *must* use adoption
 452 DTS_MUST_ADOPT = frozenset([DT_BLOCK])
 453
 454 # the set of disk templates that allow migrations
 455 DTS_MIRRORED = frozenset.union(DTS_INT_MIRROR, DTS_EXT_MIRROR)
 456
 457 # the set of file based disk templates
 458 DTS_FILEBASED = frozenset([DT_FILE, DT_SHARED_FILE])
 459
 460 # logical disk types
 461 LD_LV = "lvm"
 462 LD_DRBD8 = "drbd8"
 463 LD_FILE = "file"
 464 LD_BLOCKDEV = "blockdev"
 465 LD_RBD = "rbd"
 466 LOGICAL_DISK_TYPES = frozenset([
 467   LD_LV,
 468   LD_DRBD8,
 469   LD_FILE,
 470   LD_BLOCKDEV,
 471   LD_RBD,
 472   ])
 473
 474 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8, LD_BLOCKDEV, LD_RBD])
 475
 476 # drbd constants
 477 DRBD_HMAC_ALG = "md5"
 478 DRBD_NET_PROTOCOL = "C"
 479
 480 # drbd barrier types
 481 DRBD_B_NONE = "n"
 482 DRBD_B_DISK_BARRIERS = "b"
 483 DRBD_B_DISK_DRAIN = "d"
 484 DRBD_B_DISK_FLUSH = "f"
 485
 486 # Valid barrier combinations: "n" or any non-null subset of "bfd"
 487 DRBD_VALID_BARRIER_OPT = frozenset([
 488   frozenset([DRBD_B_NONE]),
 489   frozenset([DRBD_B_DISK_BARRIERS]),
 490   frozenset([DRBD_B_DISK_DRAIN]),
 491   frozenset([DRBD_B_DISK_FLUSH]),
 492   frozenset([DRBD_B_DISK_DRAIN, DRBD_B_DISK_FLUSH]),
 493   frozenset([DRBD_B_DISK_DRAIN, DRBD_B_DISK_FLUSH]),
 494   frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_DRAIN]),
 495   frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_FLUSH]),
 496   frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_FLUSH, DRBD_B_DISK_DRAIN]),
 497   ])
 498
 499 # rbd tool command
 500 RBD_CMD = "rbd"
 501
 502 # file backend driver
 503 FD_LOOP = "loop"
 504 FD_BLKTAP = "blktap"
 505
 506 # the set of drbd-like disk types
 507 LDS_DRBD = frozenset([LD_DRBD8])
 508
 509 # disk access mode
 510 DISK_RDONLY = "ro"
 511 DISK_RDWR = "rw"
 512 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
 513
 514 # disk replacement mode
 515 REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
 516 REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
 517 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
 518 REPLACE_DISK_AUTO = "replace_auto"
 519 REPLACE_MODES = frozenset([
 520   REPLACE_DISK_PRI,
 521   REPLACE_DISK_SEC,
 522   REPLACE_DISK_CHG,
 523   REPLACE_DISK_AUTO,
 524   ])
 525
 526 # Instance export mode
 527 EXPORT_MODE_LOCAL = "local"
 528 EXPORT_MODE_REMOTE = "remote"
 529 EXPORT_MODES = frozenset([
 530   EXPORT_MODE_LOCAL,
 531   EXPORT_MODE_REMOTE,
 532   ])
 533
 534 # Lock recalculate mode
 535 LOCKS_REPLACE = "replace"
 536 LOCKS_APPEND = "append"
 537
 538 # Lock timeout (sum) before we should go into blocking acquire (still
 539 # can be reset by priority change); computed as max time (10 hours)
 540 # before we should actually go into blocking acquire given that we
 541 # start from default priority level; in seconds
 542 LOCK_ATTEMPTS_TIMEOUT = 10 * 3600 / 20.0
 543 LOCK_ATTEMPTS_MAXWAIT = 15.0
 544 LOCK_ATTEMPTS_MINWAIT = 1.0
 545
 546 # instance creation modes
 547 INSTANCE_CREATE = "create"
 548 INSTANCE_IMPORT = "import"
 549 INSTANCE_REMOTE_IMPORT = "remote-import"
 550 INSTANCE_CREATE_MODES = frozenset([
 551   INSTANCE_CREATE,
 552   INSTANCE_IMPORT,
 553   INSTANCE_REMOTE_IMPORT,
 554   ])
 555
 556 # Remote import/export handshake message and version
 557 RIE_VERSION = 0
 558 RIE_HANDSHAKE = "Hi, I'm Ganeti"
 559
 560 # Remote import/export certificate validity in seconds
 561 RIE_CERT_VALIDITY = 24 * 60 * 60
 562
 563 # Overall timeout for establishing connection
 564 RIE_CONNECT_TIMEOUT = 180
 565
 566 # Export only: how long to wait per connection attempt (seconds)
 567 RIE_CONNECT_ATTEMPT_TIMEOUT = 20
 568
 569 # Export only: number of attempts to connect
 570 RIE_CONNECT_RETRIES = 10
 571
 572 #: Give child process up to 5 seconds to exit after sending a signal
 573 CHILD_LINGER_TIMEOUT = 5.0
 574
 575 DISK_TEMPLATES = frozenset([
 576   DT_DISKLESS,
 577   DT_PLAIN,
 578   DT_DRBD8,
 579   DT_FILE,
 580   DT_SHARED_FILE,
 581   DT_BLOCK,
 582   DT_RBD
 583   ])
 584
 585 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
 586
 587 # import/export config options
 588 INISECT_EXP = "export"
 589 INISECT_INS = "instance"
 590 INISECT_HYP = "hypervisor"
 591 INISECT_BEP = "backend"
 592 INISECT_OSP = "os"
 593
 594 # dynamic device modification
 595 DDM_ADD = "add"
 596 DDM_MODIFY = "modify"
 597 DDM_REMOVE = "remove"
 598 DDMS_VALUES = frozenset([DDM_ADD, DDM_REMOVE])
 599 DDMS_VALUES_WITH_MODIFY = (DDMS_VALUES | frozenset([
 600   DDM_MODIFY,
 601   ]))
 602 # TODO: DDM_SWAP, DDM_MOVE?
 603
 604 # common exit codes
 605 EXIT_SUCCESS = 0
 606 EXIT_FAILURE = 1
 607 EXIT_NOTCLUSTER = 5
 608 EXIT_NOTMASTER = 11
 609 EXIT_NODESETUP_ERROR = 12
 610 EXIT_CONFIRMATION = 13 # need user confirmation
 611
 612 #: Exit code for query operations with unknown fields
 613 EXIT_UNKNOWN_FIELD = 14
 614
 615 # tags
 616 TAG_CLUSTER = "cluster"
 617 TAG_NODEGROUP = "nodegroup"
 618 TAG_NODE = "node"
 619 TAG_INSTANCE = "instance"
 620 VALID_TAG_TYPES = frozenset([
 621   TAG_CLUSTER,
 622   TAG_NODEGROUP,
 623   TAG_NODE,
 624   TAG_INSTANCE,
 625   ])
 626 MAX_TAG_LEN = 128
 627 MAX_TAGS_PER_OBJ = 4096
 628
 629 # others
 630 DEFAULT_BRIDGE = "xen-br0"
 631 CLASSIC_DRBD_SYNC_SPEED = 60 * 1024  # 60 MiB, expressed in KiB
 632 IP4_ADDRESS_LOCALHOST = "127.0.0.1"
 633 IP4_ADDRESS_ANY = "0.0.0.0"
 634 IP6_ADDRESS_LOCALHOST = "::1"
 635 IP6_ADDRESS_ANY = "::"
 636 IP4_VERSION = 4
 637 IP6_VERSION = 6
 638 VALID_IP_VERSIONS = frozenset([IP4_VERSION, IP6_VERSION])
 639 TCP_PING_TIMEOUT = 10
 640 GANETI_RUNAS = "root"
 641 DEFAULT_VG = "xenvg"
 642 DEFAULT_DRBD_HELPER = "/bin/true"
 643 MIN_VG_SIZE = 20480
 644 DEFAULT_MAC_PREFIX = "aa:00:00"
 645 # default maximum instance wait time, in seconds.
 646 DEFAULT_SHUTDOWN_TIMEOUT = 120
 647 NODE_MAX_CLOCK_SKEW = 150
 648 # Time for an intra-cluster disk transfer to wait for a connection
 649 DISK_TRANSFER_CONNECT_TIMEOUT = 60
 650 # Disk index separator
 651 DISK_SEPARATOR = _autoconf.DISK_SEPARATOR
 652 IP_COMMAND_PATH = _autoconf.IP_PATH
 653
 654 #: Key for job IDs in opcode result
 655 JOB_IDS_KEY = "jobs"
 656
 657 # runparts results
 658 (RUNPARTS_SKIP,
 659  RUNPARTS_RUN,
 660  RUNPARTS_ERR) = range(3)
 661
 662 RUNPARTS_STATUS = frozenset([RUNPARTS_SKIP, RUNPARTS_RUN, RUNPARTS_ERR])
 663
 664 # RPC constants
 665 (RPC_ENCODING_NONE,
 666  RPC_ENCODING_ZLIB_BASE64) = range(2)
 667
 668 # os related constants
 669 OS_SCRIPT_CREATE = "create"
 670 OS_SCRIPT_IMPORT = "import"
 671 OS_SCRIPT_EXPORT = "export"
 672 OS_SCRIPT_RENAME = "rename"
 673 OS_SCRIPT_VERIFY = "verify"
 674 OS_SCRIPTS = frozenset([
 675   OS_SCRIPT_CREATE,
 676   OS_SCRIPT_IMPORT,
 677   OS_SCRIPT_EXPORT,
 678   OS_SCRIPT_RENAME,
 679   OS_SCRIPT_VERIFY
 680   ])
 681
 682 OS_API_FILE = "ganeti_api_version"
 683 OS_VARIANTS_FILE = "variants.list"
 684 OS_PARAMETERS_FILE = "parameters.list"
 685
 686 OS_VALIDATE_PARAMETERS = "parameters"
 687 OS_VALIDATE_CALLS = frozenset([OS_VALIDATE_PARAMETERS])
 688
 689 # ssh constants
 690 SSH_CONFIG_DIR = _autoconf.SSH_CONFIG_DIR
 691 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_dsa_key"
 692 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
 693 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_rsa_key"
 694 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
 695 SSH = "ssh"
 696 SCP = "scp"
 697
 698 # reboot types
 699 INSTANCE_REBOOT_SOFT = "soft"
 700 INSTANCE_REBOOT_HARD = "hard"
 701 INSTANCE_REBOOT_FULL = "full"
 702
 703 REBOOT_TYPES = frozenset([
 704   INSTANCE_REBOOT_SOFT,
 705   INSTANCE_REBOOT_HARD,
 706   INSTANCE_REBOOT_FULL
 707   ])
 708
 709 # instance reboot behaviors
 710 INSTANCE_REBOOT_ALLOWED = "reboot"
 711 INSTANCE_REBOOT_EXIT = "exit"
 712
 713 REBOOT_BEHAVIORS = frozenset([
 714   INSTANCE_REBOOT_ALLOWED,
 715   INSTANCE_REBOOT_EXIT
 716   ])
 717
 718 VTYPE_STRING = "string"
 719 VTYPE_MAYBE_STRING = "maybe-string"
 720 VTYPE_BOOL = "bool"
 721 VTYPE_SIZE = "size" # size, in MiBs
 722 VTYPE_INT = "int"
 723 ENFORCEABLE_TYPES = frozenset([
 724   VTYPE_STRING,
 725   VTYPE_MAYBE_STRING,
 726   VTYPE_BOOL,
 727   VTYPE_SIZE,
 728   VTYPE_INT,
 729   ])
 730
 731 # Constant representing that the user does not specify any IP version
 732 IFACE_NO_IP_VERSION_SPECIFIED = 0
 733
 734 # HV parameter names (global namespace)
 735 HV_BOOT_ORDER = "boot_order"
 736 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
 737 HV_KVM_CDROM2_IMAGE_PATH = "cdrom2_image_path"
 738 HV_KVM_FLOPPY_IMAGE_PATH = "floppy_image_path"
 739 HV_NIC_TYPE = "nic_type"
 740 HV_DISK_TYPE = "disk_type"
 741 HV_KVM_CDROM_DISK_TYPE = "cdrom_disk_type"
 742 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
 743 HV_VNC_PASSWORD_FILE = "vnc_password_file"
 744 HV_VNC_TLS = "vnc_tls"
 745 HV_VNC_X509 = "vnc_x509_path"
 746 HV_VNC_X509_VERIFY = "vnc_x509_verify"
 747 HV_KVM_SPICE_BIND = "spice_bind"
 748 HV_KVM_SPICE_IP_VERSION = "spice_ip_version"
 749 HV_KVM_SPICE_PASSWORD_FILE = "spice_password_file"
 750 HV_KVM_SPICE_LOSSLESS_IMG_COMPR = "spice_image_compression"
 751 HV_KVM_SPICE_JPEG_IMG_COMPR = "spice_jpeg_wan_compression"
 752 HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR = "spice_zlib_glz_wan_compression"
 753 HV_KVM_SPICE_STREAMING_VIDEO_DETECTION = "spice_streaming_video"
 754 HV_KVM_SPICE_AUDIO_COMPR = "spice_playback_compression"
 755 HV_KVM_SPICE_USE_TLS = "spice_use_tls"
 756 HV_KVM_SPICE_TLS_CIPHERS = "spice_tls_ciphers"
 757 HV_KVM_SPICE_USE_VDAGENT = "spice_use_vdagent"
 758 HV_ACPI = "acpi"
 759 HV_PAE = "pae"
 760 HV_USE_BOOTLOADER = "use_bootloader"
 761 HV_BOOTLOADER_ARGS = "bootloader_args"
 762 HV_BOOTLOADER_PATH = "bootloader_path"
 763 HV_KERNEL_ARGS = "kernel_args"
 764 HV_KERNEL_PATH = "kernel_path"
 765 HV_INITRD_PATH = "initrd_path"
 766 HV_ROOT_PATH = "root_path"
 767 HV_SERIAL_CONSOLE = "serial_console"
 768 HV_USB_MOUSE = "usb_mouse"
 769 HV_KEYMAP = "keymap"
 770 HV_DEVICE_MODEL = "device_model"
 771 HV_INIT_SCRIPT = "init_script"
 772 HV_MIGRATION_PORT = "migration_port"
 773 HV_MIGRATION_BANDWIDTH = "migration_bandwidth"
 774 HV_MIGRATION_DOWNTIME = "migration_downtime"
 775 HV_MIGRATION_MODE = "migration_mode"
 776 HV_USE_LOCALTIME = "use_localtime"
 777 HV_DISK_CACHE = "disk_cache"
 778 HV_SECURITY_MODEL = "security_model"
 779 HV_SECURITY_DOMAIN = "security_domain"
 780 HV_KVM_FLAG = "kvm_flag"
 781 HV_VHOST_NET = "vhost_net"
 782 HV_KVM_USE_CHROOT = "use_chroot"
 783 HV_CPU_MASK = "cpu_mask"
 784 HV_MEM_PATH = "mem_path"
 785 HV_BLOCKDEV_PREFIX = "blockdev_prefix"
 786 HV_REBOOT_BEHAVIOR = "reboot_behavior"
 787
 788 HVS_PARAMETER_TYPES = {
 789   HV_BOOT_ORDER: VTYPE_STRING,
 790   HV_KVM_FLOPPY_IMAGE_PATH: VTYPE_STRING,
 791   HV_CDROM_IMAGE_PATH: VTYPE_STRING,
 792   HV_KVM_CDROM2_IMAGE_PATH: VTYPE_STRING,
 793   HV_NIC_TYPE: VTYPE_STRING,
 794   HV_DISK_TYPE: VTYPE_STRING,
 795   HV_KVM_CDROM_DISK_TYPE: VTYPE_STRING,
 796   HV_VNC_PASSWORD_FILE: VTYPE_STRING,
 797   HV_VNC_BIND_ADDRESS: VTYPE_STRING,
 798   HV_VNC_TLS: VTYPE_BOOL,
 799   HV_VNC_X509: VTYPE_STRING,
 800   HV_VNC_X509_VERIFY: VTYPE_BOOL,
 801   HV_KVM_SPICE_BIND: VTYPE_STRING,
 802   HV_KVM_SPICE_IP_VERSION: VTYPE_INT,
 803   HV_KVM_SPICE_PASSWORD_FILE: VTYPE_STRING,
 804   HV_KVM_SPICE_LOSSLESS_IMG_COMPR: VTYPE_STRING,
 805   HV_KVM_SPICE_JPEG_IMG_COMPR: VTYPE_STRING,
 806   HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: VTYPE_STRING,
 807   HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: VTYPE_STRING,
 808   HV_KVM_SPICE_AUDIO_COMPR: VTYPE_BOOL,
 809   HV_KVM_SPICE_USE_TLS: VTYPE_BOOL,
 810   HV_KVM_SPICE_TLS_CIPHERS: VTYPE_STRING,
 811   HV_KVM_SPICE_USE_VDAGENT: VTYPE_BOOL,
 812   HV_ACPI: VTYPE_BOOL,
 813   HV_PAE: VTYPE_BOOL,
 814   HV_USE_BOOTLOADER: VTYPE_BOOL,
 815   HV_BOOTLOADER_PATH: VTYPE_STRING,
 816   HV_BOOTLOADER_ARGS: VTYPE_STRING,
 817   HV_KERNEL_PATH: VTYPE_STRING,
 818   HV_KERNEL_ARGS: VTYPE_STRING,
 819   HV_INITRD_PATH: VTYPE_STRING,
 820   HV_ROOT_PATH: VTYPE_MAYBE_STRING,
 821   HV_SERIAL_CONSOLE: VTYPE_BOOL,
 822   HV_USB_MOUSE: VTYPE_STRING,
 823   HV_KEYMAP: VTYPE_STRING,
 824   HV_DEVICE_MODEL: VTYPE_STRING,
 825   HV_INIT_SCRIPT: VTYPE_STRING,
 826   HV_MIGRATION_PORT: VTYPE_INT,
 827   HV_MIGRATION_BANDWIDTH: VTYPE_INT,
 828   HV_MIGRATION_DOWNTIME: VTYPE_INT,
 829   HV_MIGRATION_MODE: VTYPE_STRING,
 830   HV_USE_LOCALTIME: VTYPE_BOOL,
 831   HV_DISK_CACHE: VTYPE_STRING,
 832   HV_SECURITY_MODEL: VTYPE_STRING,
 833   HV_SECURITY_DOMAIN: VTYPE_STRING,
 834   HV_KVM_FLAG: VTYPE_STRING,
 835   HV_VHOST_NET: VTYPE_BOOL,
 836   HV_KVM_USE_CHROOT: VTYPE_BOOL,
 837   HV_CPU_MASK: VTYPE_STRING,
 838   HV_MEM_PATH: VTYPE_STRING,
 839   HV_BLOCKDEV_PREFIX: VTYPE_STRING,
 840   HV_REBOOT_BEHAVIOR: VTYPE_STRING,
 841   }
 842
 843 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
 844
 845 # Migration statuses
 846 HV_MIGRATION_COMPLETED = "completed"
 847 HV_MIGRATION_ACTIVE = "active"
 848 HV_MIGRATION_FAILED = "failed"
 849 HV_MIGRATION_CANCELLED = "cancelled"
 850
 851 HV_MIGRATION_VALID_STATUSES = frozenset([
 852   HV_MIGRATION_COMPLETED,
 853   HV_MIGRATION_ACTIVE,
 854   HV_MIGRATION_FAILED,
 855   HV_MIGRATION_CANCELLED,
 856   ])
 857
 858 HV_MIGRATION_FAILED_STATUSES = frozenset([
 859   HV_MIGRATION_FAILED,
 860   HV_MIGRATION_CANCELLED,
 861   ])
 862
 863 # KVM-specific statuses
 864 HV_KVM_MIGRATION_VALID_STATUSES = HV_MIGRATION_VALID_STATUSES
 865
 866 # Node info keys
 867 HV_NODEINFO_KEY_VERSION = "hv_version"
 868
 869 # Hypervisor state
 870 HVST_MEMORY_TOTAL = "mem_total"
 871 HVST_MEMORY_NODE = "mem_node"
 872 HVST_MEMORY_HV = "mem_hv"
 873 HVST_CPU_TOTAL = "cpu_total"
 874 HVST_CPU_NODE = "cpu_node"
 875
 876 HVST_DEFAULTS = {
 877   HVST_MEMORY_TOTAL: 0,
 878   HVST_MEMORY_NODE: 0,
 879   HVST_MEMORY_HV: 0,
 880   HVST_CPU_TOTAL: 1,
 881   HVST_CPU_NODE: 1,
 882   }
 883
 884 HVSTS_PARAMETER_TYPES = {
 885   HVST_MEMORY_TOTAL: VTYPE_INT,
 886   HVST_MEMORY_NODE: VTYPE_INT,
 887   HVST_MEMORY_HV: VTYPE_INT,
 888   HVST_CPU_TOTAL: VTYPE_INT,
 889   HVST_CPU_NODE: VTYPE_INT,
 890   }
 891
 892 HVSTS_PARAMETERS = frozenset(HVSTS_PARAMETER_TYPES.keys())
 893
 894 # Disk state
 895 DS_DISK_TOTAL = "disk_total"
 896 DS_DISK_RESERVED = "disk_reserved"
 897 DS_DISK_OVERHEAD = "disk_overhead"
 898
 899 DS_DEFAULTS = {
 900   DS_DISK_TOTAL: 0,
 901   DS_DISK_RESERVED: 0,
 902   DS_DISK_OVERHEAD: 0,
 903   }
 904
 905 DSS_PARAMETER_TYPES = {
 906   DS_DISK_TOTAL: VTYPE_INT,
 907   DS_DISK_RESERVED: VTYPE_INT,
 908   DS_DISK_OVERHEAD: VTYPE_INT,
 909   }
 910
 911 DSS_PARAMETERS = frozenset(DSS_PARAMETER_TYPES.keys())
 912 DS_VALID_TYPES = frozenset([LD_LV])
 913
 914 # Backend parameter names
 915 BE_MEMORY = "memory" # deprecated and replaced by max and min mem
 916 BE_MAXMEM = "maxmem"
 917 BE_MINMEM = "minmem"
 918 BE_VCPUS = "vcpus"
 919 BE_AUTO_BALANCE = "auto_balance"
 920 BE_ALWAYS_FAILOVER = "always_failover"
 921
 922 BES_PARAMETER_TYPES = {
 923   BE_MAXMEM: VTYPE_SIZE,
 924   BE_MINMEM: VTYPE_SIZE,
 925   BE_VCPUS: VTYPE_INT,
 926   BE_AUTO_BALANCE: VTYPE_BOOL,
 927   BE_ALWAYS_FAILOVER: VTYPE_BOOL,
 928   }
 929
 930 BES_PARAMETER_COMPAT = {
 931   BE_MEMORY: VTYPE_SIZE,
 932   }
 933 BES_PARAMETER_COMPAT.update(BES_PARAMETER_TYPES)
 934
 935 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 936
 937 # instance specs
 938 ISPEC_MEM_SIZE = "memory-size"
 939 ISPEC_CPU_COUNT = "cpu-count"
 940 ISPEC_DISK_COUNT = "disk-count"
 941 ISPEC_DISK_SIZE = "disk-size"
 942 ISPEC_NIC_COUNT = "nic-count"
 943
 944 ISPECS_PARAMETER_TYPES = {
 945   ISPEC_MEM_SIZE: VTYPE_INT,
 946   ISPEC_CPU_COUNT: VTYPE_INT,
 947   ISPEC_DISK_COUNT: VTYPE_INT,
 948   ISPEC_DISK_SIZE: VTYPE_INT,
 949   ISPEC_NIC_COUNT: VTYPE_INT,
 950   }
 951
 952 ISPECS_PARAMETERS = frozenset(ISPECS_PARAMETER_TYPES.keys())
 953
 954 ISPECS_MIN = "min"
 955 ISPECS_MAX = "max"
 956 ISPECS_STD = "std"
 957 IPOLICY_DTS = "disk-templates"
 958 IPOLICY_VCPU_RATIO = "vcpu-ratio"
 959 IPOLICY_SPINDLE_RATIO = "spindle-ratio"
 960
 961 IPOLICY_ISPECS = frozenset([
 962   ISPECS_MIN,
 963   ISPECS_MAX,
 964   ISPECS_STD,
 965   ])
 966
 967 IPOLICY_PARAMETERS = frozenset([
 968   IPOLICY_VCPU_RATIO,
 969   IPOLICY_SPINDLE_RATIO,
 970   ])
 971
 972 IPOLICY_ALL_KEYS = (IPOLICY_ISPECS |
 973                     IPOLICY_PARAMETERS |
 974                     frozenset([IPOLICY_DTS]))
 975
 976 # Node parameter names
 977 ND_OOB_PROGRAM = "oob_program"
 978 ND_SPINDLE_COUNT = "spindle_count"
 979
 980 NDS_PARAMETER_TYPES = {
 981   ND_OOB_PROGRAM: VTYPE_MAYBE_STRING,
 982   ND_SPINDLE_COUNT: VTYPE_INT,
 983   }
 984
 985 NDS_PARAMETERS = frozenset(NDS_PARAMETER_TYPES.keys())
 986
 987 # Logical Disks parameters
 988 LDP_RESYNC_RATE = "resync-rate"
 989 LDP_STRIPES = "stripes"
 990 LDP_BARRIERS = "disabled-barriers"
 991 LDP_NO_META_FLUSH = "disable-meta-flush"
 992 LDP_DEFAULT_METAVG = "default-metavg"
 993 LDP_DISK_CUSTOM = "disk-custom"
 994 LDP_NET_CUSTOM = "net-custom"
 995 LDP_DYNAMIC_RESYNC = "dynamic-resync"
 996 LDP_PLAN_AHEAD = "c-plan-ahead"
 997 LDP_FILL_TARGET = "c-fill-target"
 998 LDP_DELAY_TARGET = "c-delay-target"
 999 LDP_MAX_RATE = "c-max-rate"
1000 LDP_MIN_RATE = "c-min-rate"
1001 LDP_POOL = "pool"
1002 DISK_LD_TYPES = {
1003   LDP_RESYNC_RATE: VTYPE_INT,
1004   LDP_STRIPES: VTYPE_INT,
1005   LDP_BARRIERS: VTYPE_STRING,
1006   LDP_NO_META_FLUSH: VTYPE_BOOL,
1007   LDP_DEFAULT_METAVG: VTYPE_STRING,
1008   LDP_DISK_CUSTOM: VTYPE_STRING,
1009   LDP_NET_CUSTOM: VTYPE_STRING,
1010   LDP_DYNAMIC_RESYNC: VTYPE_BOOL,
1011   LDP_PLAN_AHEAD: VTYPE_INT,
1012   LDP_FILL_TARGET: VTYPE_INT,
1013   LDP_DELAY_TARGET: VTYPE_INT,
1014   LDP_MAX_RATE: VTYPE_INT,
1015   LDP_MIN_RATE: VTYPE_INT,
1016   LDP_POOL: VTYPE_STRING,
1017   }
1018 DISK_LD_PARAMETERS = frozenset(DISK_LD_TYPES.keys())
1019
1020 # Disk template parameters (can be set/changed by the user via gnt-cluster and
1021 # gnt-group)
1022 DRBD_RESYNC_RATE = "resync-rate"
1023 DRBD_DATA_STRIPES = "data-stripes"
1024 DRBD_META_STRIPES = "meta-stripes"
1025 DRBD_DISK_BARRIERS = "disk-barriers"
1026 DRBD_META_BARRIERS = "meta-barriers"
1027 DRBD_DEFAULT_METAVG = "metavg"
1028 DRBD_DISK_CUSTOM = "disk-custom"
1029 DRBD_NET_CUSTOM = "net-custom"
1030 DRBD_DYNAMIC_RESYNC = "dynamic-resync"
1031 DRBD_PLAN_AHEAD = "c-plan-ahead"
1032 DRBD_FILL_TARGET = "c-fill-target"
1033 DRBD_DELAY_TARGET = "c-delay-target"
1034 DRBD_MAX_RATE = "c-max-rate"
1035 DRBD_MIN_RATE = "c-min-rate"
1036 LV_STRIPES = "stripes"
1037 RBD_POOL = "pool"
1038 DISK_DT_TYPES = {
1039   DRBD_RESYNC_RATE: VTYPE_INT,
1040   DRBD_DATA_STRIPES: VTYPE_INT,
1041   DRBD_META_STRIPES: VTYPE_INT,
1042   DRBD_DISK_BARRIERS: VTYPE_STRING,
1043   DRBD_META_BARRIERS: VTYPE_BOOL,
1044   DRBD_DEFAULT_METAVG: VTYPE_STRING,
1045   DRBD_DISK_CUSTOM: VTYPE_STRING,
1046   DRBD_NET_CUSTOM: VTYPE_STRING,
1047   DRBD_DYNAMIC_RESYNC: VTYPE_BOOL,
1048   DRBD_PLAN_AHEAD: VTYPE_INT,
1049   DRBD_FILL_TARGET: VTYPE_INT,
1050   DRBD_DELAY_TARGET: VTYPE_INT,
1051   DRBD_MAX_RATE: VTYPE_INT,
1052   DRBD_MIN_RATE: VTYPE_INT,
1053   LV_STRIPES: VTYPE_INT,
1054   RBD_POOL: VTYPE_STRING,
1055   }
1056
1057 DISK_DT_PARAMETERS = frozenset(DISK_DT_TYPES.keys())
1058
1059 # OOB supported commands
1060 OOB_POWER_ON = "power-on"
1061 OOB_POWER_OFF = "power-off"
1062 OOB_POWER_CYCLE = "power-cycle"
1063 OOB_POWER_STATUS = "power-status"
1064 OOB_HEALTH = "health"
1065
1066 OOB_COMMANDS = frozenset([
1067   OOB_POWER_ON,
1068   OOB_POWER_OFF,
1069   OOB_POWER_CYCLE,
1070   OOB_POWER_STATUS,
1071   OOB_HEALTH
1072   ])
1073
1074 OOB_POWER_STATUS_POWERED = "powered"
1075
1076 OOB_TIMEOUT = 60 # 60 seconds
1077 OOB_POWER_DELAY = 2.0 # 2 seconds
1078
1079 OOB_STATUS_OK = "OK"
1080 OOB_STATUS_WARNING = "WARNING"
1081 OOB_STATUS_CRITICAL = "CRITICAL"
1082 OOB_STATUS_UNKNOWN = "UNKNOWN"
1083
1084 OOB_STATUSES = frozenset([
1085   OOB_STATUS_OK,
1086   OOB_STATUS_WARNING,
1087   OOB_STATUS_CRITICAL,
1088   OOB_STATUS_UNKNOWN,
1089   ])
1090
1091 # Instance Parameters Profile
1092 PP_DEFAULT = "default"
1093
1094 # NIC_* constants are used inside the ganeti config
1095 NIC_MODE = "mode"
1096 NIC_LINK = "link"
1097
1098 NIC_MODE_BRIDGED = "bridged"
1099 NIC_MODE_ROUTED = "routed"
1100
1101 NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])
1102
1103 NICS_PARAMETER_TYPES = {
1104   NIC_MODE: VTYPE_STRING,
1105   NIC_LINK: VTYPE_STRING,
1106   }
1107
1108 NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
1109
1110 # IDISK_* constants are used in opcodes, to create/change disks
1111 IDISK_SIZE = "size"
1112 IDISK_MODE = "mode"
1113 IDISK_ADOPT = "adopt"
1114 IDISK_VG = "vg"
1115 IDISK_METAVG = "metavg"
1116 IDISK_PARAMS_TYPES = {
1117   IDISK_SIZE: VTYPE_SIZE,
1118   IDISK_MODE: VTYPE_STRING,
1119   IDISK_ADOPT: VTYPE_STRING,
1120   IDISK_VG: VTYPE_STRING,
1121   IDISK_METAVG: VTYPE_STRING,
1122   }
1123 IDISK_PARAMS = frozenset(IDISK_PARAMS_TYPES.keys())
1124
1125 # INIC_* constants are used in opcodes, to create/change nics
1126 INIC_MAC = "mac"
1127 INIC_IP = "ip"
1128 INIC_MODE = "mode"
1129 INIC_LINK = "link"
1130 INIC_PARAMS_TYPES = {
1131   INIC_IP: VTYPE_MAYBE_STRING,
1132   INIC_LINK: VTYPE_STRING,
1133   INIC_MAC: VTYPE_STRING,
1134   INIC_MODE: VTYPE_STRING,
1135   }
1136 INIC_PARAMS = frozenset(INIC_PARAMS_TYPES.keys())
1137
1138 # Hypervisor constants
1139 HT_XEN_PVM = "xen-pvm"
1140 HT_FAKE = "fake"
1141 HT_XEN_HVM = "xen-hvm"
1142 HT_KVM = "kvm"
1143 HT_CHROOT = "chroot"
1144 HT_LXC = "lxc"
1145 HYPER_TYPES = frozenset([
1146   HT_XEN_PVM,
1147   HT_FAKE,
1148   HT_XEN_HVM,
1149   HT_KVM,
1150   HT_CHROOT,
1151   HT_LXC,
1152   ])
1153 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
1154
1155 VNC_BASE_PORT = 5900
1156 VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
1157 VNC_DEFAULT_BIND_ADDRESS = IP4_ADDRESS_ANY
1158
1159 # NIC types
1160 HT_NIC_RTL8139 = "rtl8139"
1161 HT_NIC_NE2K_PCI = "ne2k_pci"
1162 HT_NIC_NE2K_ISA = "ne2k_isa"
1163 HT_NIC_I82551 = "i82551"
1164 HT_NIC_I85557B = "i82557b"
1165 HT_NIC_I8259ER = "i82559er"
1166 HT_NIC_PCNET = "pcnet"
1167 HT_NIC_E1000 = "e1000"
1168 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
1169
1170 HT_HVM_VALID_NIC_TYPES = frozenset([
1171   HT_NIC_RTL8139,
1172   HT_NIC_NE2K_PCI,
1173   HT_NIC_E1000,
1174   HT_NIC_NE2K_ISA,
1175   HT_NIC_PARAVIRTUAL
1176   ])
1177 HT_KVM_VALID_NIC_TYPES = frozenset([
1178   HT_NIC_RTL8139,
1179   HT_NIC_NE2K_PCI,
1180   HT_NIC_NE2K_ISA,
1181   HT_NIC_I82551,
1182   HT_NIC_I85557B,
1183   HT_NIC_I8259ER,
1184   HT_NIC_PCNET,
1185   HT_NIC_E1000,
1186   HT_NIC_PARAVIRTUAL
1187   ])
1188
1189 # Disk types
1190 HT_DISK_IOEMU = "ioemu"
1191 HT_DISK_IDE = "ide"
1192 HT_DISK_SCSI = "scsi"
1193 HT_DISK_SD = "sd"
1194 HT_DISK_MTD = "mtd"
1195 HT_DISK_PFLASH = "pflash"
1196
1197 HT_CACHE_DEFAULT = "default"
1198 HT_CACHE_NONE = "none"
1199 HT_CACHE_WTHROUGH = "writethrough"
1200 HT_CACHE_WBACK = "writeback"
1201 HT_VALID_CACHE_TYPES = frozenset([
1202   HT_CACHE_DEFAULT,
1203   HT_CACHE_NONE,
1204   HT_CACHE_WTHROUGH,
1205   HT_CACHE_WBACK
1206   ])
1207
1208 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
1209 HT_KVM_VALID_DISK_TYPES = frozenset([
1210   HT_DISK_PARAVIRTUAL,
1211   HT_DISK_IDE,
1212   HT_DISK_SCSI,
1213   HT_DISK_SD,
1214   HT_DISK_MTD,
1215   HT_DISK_PFLASH
1216   ])
1217
1218 # Mouse types:
1219 HT_MOUSE_MOUSE = "mouse"
1220 HT_MOUSE_TABLET = "tablet"
1221
1222 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
1223
1224 # Boot order
1225 HT_BO_FLOPPY = "floppy"
1226 HT_BO_CDROM = "cdrom"
1227 HT_BO_DISK = "disk"
1228 HT_BO_NETWORK = "network"
1229
1230 HT_KVM_VALID_BO_TYPES = frozenset([
1231   HT_BO_FLOPPY,
1232   HT_BO_CDROM,
1233   HT_BO_DISK,
1234   HT_BO_NETWORK
1235   ])
1236
1237 # SPICE lossless image compression options
1238 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_GLZ = "auto_glz"
1239 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_LZ = "auto_lz"
1240 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_QUIC = "quic"
1241 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_GLZ = "glz"
1242 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_LZ = "lz"
1243 HT_KVM_SPICE_LOSSLESS_IMG_COMPR_OFF = "off"
1244
1245 HT_KVM_SPICE_VALID_LOSSLESS_IMG_COMPR_OPTIONS = frozenset([
1246   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_GLZ,
1247   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_AUTO_LZ,
1248   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_QUIC,
1249   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_GLZ,
1250   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_LZ,
1251   HT_KVM_SPICE_LOSSLESS_IMG_COMPR_OFF,
1252   ])
1253
1254 # SPICE lossy image compression options (valid for both jpeg and zlib-glz)
1255 HT_KVM_SPICE_LOSSY_IMG_COMPR_AUTO = "auto"
1256 HT_KVM_SPICE_LOSSY_IMG_COMPR_NEVER = "never"
1257 HT_KVM_SPICE_LOSSY_IMG_COMPR_ALWAYS = "always"
1258
1259 HT_KVM_SPICE_VALID_LOSSY_IMG_COMPR_OPTIONS = frozenset([
1260   HT_KVM_SPICE_LOSSY_IMG_COMPR_AUTO,
1261   HT_KVM_SPICE_LOSSY_IMG_COMPR_NEVER,
1262   HT_KVM_SPICE_LOSSY_IMG_COMPR_ALWAYS,
1263   ])
1264
1265 # SPICE video stream detection
1266 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_OFF = "off"
1267 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_ALL = "all"
1268 HT_KVM_SPICE_VIDEO_STREAM_DETECTION_FILTER = "filter"
1269
1270 HT_KVM_SPICE_VALID_VIDEO_STREAM_DETECTION_OPTIONS = frozenset([
1271   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_OFF,
1272   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_ALL,
1273   HT_KVM_SPICE_VIDEO_STREAM_DETECTION_FILTER,
1274   ])
1275
1276 # Security models
1277 HT_SM_NONE = "none"
1278 HT_SM_USER = "user"
1279 HT_SM_POOL = "pool"
1280
1281 HT_KVM_VALID_SM_TYPES = frozenset([HT_SM_NONE, HT_SM_USER, HT_SM_POOL])
1282
1283 # Kvm flag values
1284 HT_KVM_ENABLED = "enabled"
1285 HT_KVM_DISABLED = "disabled"
1286
1287 HT_KVM_FLAG_VALUES = frozenset([HT_KVM_ENABLED, HT_KVM_DISABLED])
1288
1289 # Migration type
1290 HT_MIGRATION_LIVE = "live"
1291 HT_MIGRATION_NONLIVE = "non-live"
1292 HT_MIGRATION_MODES = frozenset([HT_MIGRATION_LIVE, HT_MIGRATION_NONLIVE])
1293
1294 # Cluster Verify steps
1295 VERIFY_NPLUSONE_MEM = "nplusone_mem"
1296 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
1297
1298 # Cluster Verify error classes
1299 CV_TCLUSTER = "cluster"
1300 CV_TNODE = "node"
1301 CV_TINSTANCE = "instance"
1302
1303 # Cluster Verify error codes and documentation
1304 CV_ECLUSTERCFG = \
1305   (CV_TCLUSTER, "ECLUSTERCFG", "Cluster configuration verification failure")
1306 CV_ECLUSTERCERT = \
1307   (CV_TCLUSTER, "ECLUSTERCERT",
1308    "Cluster certificate files verification failure")
1309 CV_ECLUSTERFILECHECK = \
1310   (CV_TCLUSTER, "ECLUSTERFILECHECK",
1311    "Cluster configuration verification failure")
1312 CV_ECLUSTERDANGLINGNODES = \
1313   (CV_TNODE, "ECLUSTERDANGLINGNODES",
1314    "Some nodes belong to non-existing groups")
1315 CV_ECLUSTERDANGLINGINST = \
1316   (CV_TNODE, "ECLUSTERDANGLINGINST",
1317    "Some instances have a non-existing primary node")
1318 CV_EINSTANCEBADNODE = \
1319   (CV_TINSTANCE, "EINSTANCEBADNODE",
1320    "Instance marked as running lives on an offline node")
1321 CV_EINSTANCEDOWN = \
1322   (CV_TINSTANCE, "EINSTANCEDOWN", "Instance not running on its primary node")
1323 CV_EINSTANCELAYOUT = \
1324   (CV_TINSTANCE, "EINSTANCELAYOUT", "Instance has multiple secondary nodes")
1325 CV_EINSTANCEMISSINGDISK = \
1326   (CV_TINSTANCE, "EINSTANCEMISSINGDISK", "Missing volume on an instance")
1327 CV_EINSTANCEFAULTYDISK = \
1328   (CV_TINSTANCE, "EINSTANCEFAULTYDISK",
1329    "Impossible to retrieve status for a disk")
1330 CV_EINSTANCEWRONGNODE = \
1331   (CV_TINSTANCE, "EINSTANCEWRONGNODE", "Instance running on the wrong node")
1332 CV_EINSTANCESPLITGROUPS = \
1333   (CV_TINSTANCE, "EINSTANCESPLITGROUPS",
1334    "Instance with primary and secondary nodes in different groups")
1335 CV_EINSTANCEPOLICY = \
1336   (CV_TINSTANCE, "EINSTANCEPOLICY",
1337    "Instance does not meet policy")
1338 CV_ENODEDRBD = \
1339   (CV_TNODE, "ENODEDRBD", "Error parsing the DRBD status file")
1340 CV_ENODEDRBDHELPER = \
1341   (CV_TNODE, "ENODEDRBDHELPER", "Error caused by the DRBD helper")
1342 CV_ENODEFILECHECK = \
1343   (CV_TNODE, "ENODEFILECHECK",
1344    "Error retrieving the checksum of the node files")
1345 CV_ENODEHOOKS = \
1346   (CV_TNODE, "ENODEHOOKS", "Communication failure in hooks execution")
1347 CV_ENODEHV = \
1348   (CV_TNODE, "ENODEHV", "Hypervisor parameters verification failure")
1349 CV_ENODELVM = \
1350   (CV_TNODE, "ENODELVM", "LVM-related node error")
1351 CV_ENODEN1 = \
1352   (CV_TNODE, "ENODEN1", "Not enough memory to accommodate instance failovers")
1353 CV_ENODENET = \
1354   (CV_TNODE, "ENODENET", "Network-related node error")
1355 CV_ENODEOS = \
1356   (CV_TNODE, "ENODEOS", "OS-related node error")
1357 CV_ENODEORPHANINSTANCE = \
1358   (CV_TNODE, "ENODEORPHANINSTANCE", "Unknown intance running on a node")
1359 CV_ENODEORPHANLV = \
1360   (CV_TNODE, "ENODEORPHANLV", "Unknown LVM logical volume")
1361 CV_ENODERPC = \
1362   (CV_TNODE, "ENODERPC",
1363    "Error during connection to the primary node of an instance")
1364 CV_ENODESSH = \
1365   (CV_TNODE, "ENODESSH", "SSH-related node error")
1366 CV_ENODEVERSION = \
1367   (CV_TNODE, "ENODEVERSION",
1368    "Protocol version mismatch or Ganeti version mismatch")
1369 CV_ENODESETUP = \
1370   (CV_TNODE, "ENODESETUP", "Node setup error")
1371 CV_ENODETIME = \
1372   (CV_TNODE, "ENODETIME", "Node returned invalid time")
1373 CV_ENODEOOBPATH = \
1374   (CV_TNODE, "ENODEOOBPATH", "Invalid Out Of Band path")
1375 CV_ENODEUSERSCRIPTS = \
1376   (CV_TNODE, "ENODEUSERSCRIPTS", "User scripts not present or not executable")
1377
1378 CV_ALL_ECODES = frozenset([
1379   CV_ECLUSTERCFG,
1380   CV_ECLUSTERCERT,
1381   CV_ECLUSTERFILECHECK,
1382   CV_ECLUSTERDANGLINGNODES,
1383   CV_ECLUSTERDANGLINGINST,
1384   CV_EINSTANCEBADNODE,
1385   CV_EINSTANCEDOWN,
1386   CV_EINSTANCELAYOUT,
1387   CV_EINSTANCEMISSINGDISK,
1388   CV_EINSTANCEFAULTYDISK,
1389   CV_EINSTANCEWRONGNODE,
1390   CV_EINSTANCESPLITGROUPS,
1391   CV_EINSTANCEPOLICY,
1392   CV_ENODEDRBD,
1393   CV_ENODEDRBDHELPER,
1394   CV_ENODEFILECHECK,
1395   CV_ENODEHOOKS,
1396   CV_ENODEHV,
1397   CV_ENODELVM,
1398   CV_ENODEN1,
1399   CV_ENODENET,
1400   CV_ENODEOS,
1401   CV_ENODEORPHANINSTANCE,
1402   CV_ENODEORPHANLV,
1403   CV_ENODERPC,
1404   CV_ENODESSH,
1405   CV_ENODEVERSION,
1406   CV_ENODESETUP,
1407   CV_ENODETIME,
1408   CV_ENODEOOBPATH,
1409   CV_ENODEUSERSCRIPTS,
1410   ])
1411
1412 CV_ALL_ECODES_STRINGS = frozenset(estr for (_, estr, _) in CV_ALL_ECODES)
1413
1414 # Node verify constants
1415 NV_DRBDHELPER = "drbd-helper"
1416 NV_DRBDLIST = "drbd-list"
1417 NV_FILELIST = "filelist"
1418 NV_HVINFO = "hvinfo"
1419 NV_HYPERVISOR = "hypervisor"
1420 NV_HVPARAMS = "hvparms"
1421 NV_INSTANCELIST = "instancelist"
1422 NV_LVLIST = "lvlist"
1423 NV_MASTERIP = "master-ip"
1424 NV_NODELIST = "nodelist"
1425 NV_NODENETTEST = "node-net-test"
1426 NV_NODESETUP = "nodesetup"
1427 NV_OSLIST = "oslist"
1428 NV_PVLIST = "pvlist"
1429 NV_TIME = "time"
1430 NV_VERSION = "version"
1431 NV_VGLIST = "vglist"
1432 NV_VMNODES = "vmnodes"
1433 NV_OOB_PATHS = "oob-paths"
1434 NV_BRIDGES = "bridges"
1435 NV_USERSCRIPTS = "user-scripts"
1436
1437 # Instance status
1438 INSTST_RUNNING = "running"
1439 INSTST_ADMINDOWN = "ADMIN_down"
1440 INSTST_ADMINOFFLINE = "ADMIN_offline"
1441 INSTST_NODEOFFLINE = "ERROR_nodeoffline"
1442 INSTST_NODEDOWN = "ERROR_nodedown"
1443 INSTST_WRONGNODE = "ERROR_wrongnode"
1444 INSTST_ERRORUP = "ERROR_up"
1445 INSTST_ERRORDOWN = "ERROR_down"
1446 INSTST_ALL = frozenset([
1447   INSTST_RUNNING,
1448   INSTST_ADMINDOWN,
1449   INSTST_ADMINOFFLINE,
1450   INSTST_NODEOFFLINE,
1451   INSTST_NODEDOWN,
1452   INSTST_WRONGNODE,
1453   INSTST_ERRORUP,
1454   INSTST_ERRORDOWN,
1455   ])
1456
1457 # Admin states
1458 ADMINST_UP = "up"
1459 ADMINST_DOWN = "down"
1460 ADMINST_OFFLINE = "offline"
1461 ADMINST_ALL = frozenset([
1462   ADMINST_UP,
1463   ADMINST_DOWN,
1464   ADMINST_OFFLINE,
1465   ])
1466
1467 # Node roles
1468 NR_REGULAR = "R"
1469 NR_MASTER = "M"
1470 NR_MCANDIDATE = "C"
1471 NR_DRAINED = "D"
1472 NR_OFFLINE = "O"
1473 NR_ALL = frozenset([
1474   NR_REGULAR,
1475   NR_MASTER,
1476   NR_MCANDIDATE,
1477   NR_DRAINED,
1478   NR_OFFLINE,
1479   ])
1480
1481 # SSL certificate check constants (in days)
1482 SSL_CERT_EXPIRATION_WARN = 30
1483 SSL_CERT_EXPIRATION_ERROR = 7
1484
1485 # Allocator framework constants
1486 IALLOCATOR_VERSION = 2
1487 IALLOCATOR_DIR_IN = "in"
1488 IALLOCATOR_DIR_OUT = "out"
1489 VALID_IALLOCATOR_DIRECTIONS = frozenset([
1490   IALLOCATOR_DIR_IN,
1491   IALLOCATOR_DIR_OUT,
1492   ])
1493 IALLOCATOR_MODE_ALLOC = "allocate"
1494 IALLOCATOR_MODE_RELOC = "relocate"
1495 IALLOCATOR_MODE_CHG_GROUP = "change-group"
1496 IALLOCATOR_MODE_NODE_EVAC = "node-evacuate"
1497 VALID_IALLOCATOR_MODES = frozenset([
1498   IALLOCATOR_MODE_ALLOC,
1499   IALLOCATOR_MODE_RELOC,
1500   IALLOCATOR_MODE_CHG_GROUP,
1501   IALLOCATOR_MODE_NODE_EVAC,
1502   ])
1503 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
1504
1505 IALLOCATOR_NEVAC_PRI = "primary-only"
1506 IALLOCATOR_NEVAC_SEC = "secondary-only"
1507 IALLOCATOR_NEVAC_ALL = "all"
1508 IALLOCATOR_NEVAC_MODES = frozenset([
1509   IALLOCATOR_NEVAC_PRI,
1510   IALLOCATOR_NEVAC_SEC,
1511   IALLOCATOR_NEVAC_ALL,
1512   ])
1513
1514 # Node evacuation
1515 NODE_EVAC_PRI = "primary-only"
1516 NODE_EVAC_SEC = "secondary-only"
1517 NODE_EVAC_ALL = "all"
1518 NODE_EVAC_MODES = frozenset([
1519   NODE_EVAC_PRI,
1520   NODE_EVAC_SEC,
1521   NODE_EVAC_ALL,
1522   ])
1523
1524 # Job queue
1525 JOB_QUEUE_VERSION = 1
1526 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
1527 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
1528 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
1529 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
1530 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
1531 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
1532 JOB_QUEUE_DIRS = [QUEUE_DIR, JOB_QUEUE_ARCHIVE_DIR]
1533 JOB_QUEUE_DIRS_MODE = SECURE_DIR_MODE
1534
1535 JOB_ID_TEMPLATE = r"\d+"
1536 JOB_FILE_RE = re.compile(r"^job-(%s)$" % JOB_ID_TEMPLATE)
1537
1538 # unchanged job return
1539 JOB_NOTCHANGED = "nochange"
1540
1541 # Job status
1542 JOB_STATUS_QUEUED = "queued"
1543 JOB_STATUS_WAITING = "waiting"
1544 JOB_STATUS_CANCELING = "canceling"
1545 JOB_STATUS_RUNNING = "running"
1546 JOB_STATUS_CANCELED = "canceled"
1547 JOB_STATUS_SUCCESS = "success"
1548 JOB_STATUS_ERROR = "error"
1549 JOBS_FINALIZED = frozenset([
1550   JOB_STATUS_CANCELED,
1551   JOB_STATUS_SUCCESS,
1552   JOB_STATUS_ERROR,
1553   ])
1554 JOB_STATUS_ALL = frozenset([
1555   JOB_STATUS_QUEUED,
1556   JOB_STATUS_WAITING,
1557   JOB_STATUS_CANCELING,
1558   JOB_STATUS_RUNNING,
1559   ]) | JOBS_FINALIZED
1560
1561 # OpCode status
1562 # not yet finalized
1563 OP_STATUS_QUEUED = "queued"
1564 OP_STATUS_WAITING = "waiting"
1565 OP_STATUS_CANCELING = "canceling"
1566 OP_STATUS_RUNNING = "running"
1567 # finalized
1568 OP_STATUS_CANCELED = "canceled"
1569 OP_STATUS_SUCCESS = "success"
1570 OP_STATUS_ERROR = "error"
1571 OPS_FINALIZED = frozenset([
1572   OP_STATUS_CANCELED,
1573   OP_STATUS_SUCCESS,
1574   OP_STATUS_ERROR
1575   ])
1576
1577 # OpCode priority
1578 OP_PRIO_LOWEST = +19
1579 OP_PRIO_HIGHEST = -20
1580
1581 OP_PRIO_LOW = +10
1582 OP_PRIO_NORMAL = 0
1583 OP_PRIO_HIGH = -10
1584
1585 OP_PRIO_SUBMIT_VALID = frozenset([
1586   OP_PRIO_LOW,
1587   OP_PRIO_NORMAL,
1588   OP_PRIO_HIGH,
1589   ])
1590
1591 OP_PRIO_DEFAULT = OP_PRIO_NORMAL
1592
1593 # Execution log types
1594 ELOG_MESSAGE = "message"
1595 ELOG_PROGRESS = "progress"
1596 ELOG_REMOTE_IMPORT = "remote-import"
1597 ELOG_JQUEUE_TEST = "jqueue-test"
1598
1599 # /etc/hosts modification
1600 ETC_HOSTS_ADD = "add"
1601 ETC_HOSTS_REMOVE = "remove"
1602
1603 # Job queue test
1604 JQT_MSGPREFIX = "TESTMSG="
1605 JQT_EXPANDNAMES = "expandnames"
1606 JQT_EXEC = "exec"
1607 JQT_LOGMSG = "logmsg"
1608 JQT_STARTMSG = "startmsg"
1609 JQT_ALL = frozenset([
1610   JQT_EXPANDNAMES,
1611   JQT_EXEC,
1612   JQT_LOGMSG,
1613   JQT_STARTMSG,
1614   ])
1615
1616 # Query resources
1617 QR_INSTANCE = "instance"
1618 QR_NODE = "node"
1619 QR_LOCK = "lock"
1620 QR_GROUP = "group"
1621 QR_OS = "os"
1622
1623 #: List of resources which can be queried using L{opcodes.OpQuery}
1624 QR_VIA_OP = frozenset([QR_INSTANCE, QR_NODE, QR_GROUP, QR_OS])
1625
1626 #: List of resources which can be queried using Local UniX Interface
1627 QR_VIA_LUXI = QR_VIA_OP.union([
1628   QR_LOCK,
1629   ])
1630
1631 #: List of resources which can be queried using RAPI
1632 QR_VIA_RAPI = QR_VIA_LUXI
1633
1634 # Query field types
1635 QFT_UNKNOWN = "unknown"
1636 QFT_TEXT = "text"
1637 QFT_BOOL = "bool"
1638 QFT_NUMBER = "number"
1639 QFT_UNIT = "unit"
1640 QFT_TIMESTAMP = "timestamp"
1641 QFT_OTHER = "other"
1642
1643 #: All query field types
1644 QFT_ALL = frozenset([
1645   QFT_UNKNOWN,
1646   QFT_TEXT,
1647   QFT_BOOL,
1648   QFT_NUMBER,
1649   QFT_UNIT,
1650   QFT_TIMESTAMP,
1651   QFT_OTHER,
1652   ])
1653
1654 # Query result field status (don't change or reuse values as they're used by
1655 # clients)
1656 #: Normal field status
1657 RS_NORMAL = 0
1658 #: Unknown field
1659 RS_UNKNOWN = 1
1660 #: No data (e.g. RPC error), can be used instead of L{RS_OFFLINE}
1661 RS_NODATA = 2
1662 #: Value unavailable/unsupported for item; if this field is supported
1663 #: but we cannot get the data for the moment, RS_NODATA or
1664 #: RS_OFFLINE should be used
1665 RS_UNAVAIL = 3
1666 #: Resource marked offline
1667 RS_OFFLINE = 4
1668
1669 RS_ALL = frozenset([
1670   RS_NORMAL,
1671   RS_UNKNOWN,
1672   RS_NODATA,
1673   RS_UNAVAIL,
1674   RS_OFFLINE,
1675   ])
1676
1677 #: Dictionary with special field cases and their verbose/terse formatting
1678 RSS_DESCRIPTION = {
1679   RS_UNKNOWN: ("(unknown)", "??"),
1680   RS_NODATA: ("(nodata)", "?"),
1681   RS_OFFLINE: ("(offline)", "*"),
1682   RS_UNAVAIL: ("(unavail)", "-"),
1683   }
1684
1685 # max dynamic devices
1686 MAX_NICS = 8
1687 MAX_DISKS = 16
1688
1689 # SSCONF keys
1690 SS_CLUSTER_NAME = "cluster_name"
1691 SS_CLUSTER_TAGS = "cluster_tags"
1692 SS_FILE_STORAGE_DIR = "file_storage_dir"
1693 SS_SHARED_FILE_STORAGE_DIR = "shared_file_storage_dir"
1694 SS_MASTER_CANDIDATES = "master_candidates"
1695 SS_MASTER_CANDIDATES_IPS = "master_candidates_ips"
1696 SS_MASTER_IP = "master_ip"
1697 SS_MASTER_NETDEV = "master_netdev"
1698 SS_MASTER_NETMASK = "master_netmask"
1699 SS_MASTER_NODE = "master_node"
1700 SS_NODE_LIST = "node_list"
1701 SS_NODE_PRIMARY_IPS = "node_primary_ips"
1702 SS_NODE_SECONDARY_IPS = "node_secondary_ips"
1703 SS_OFFLINE_NODES = "offline_nodes"
1704 SS_ONLINE_NODES = "online_nodes"
1705 SS_PRIMARY_IP_FAMILY = "primary_ip_family"
1706 SS_INSTANCE_LIST = "instance_list"
1707 SS_RELEASE_VERSION = "release_version"
1708 SS_HYPERVISOR_LIST = "hypervisor_list"
1709 SS_MAINTAIN_NODE_HEALTH = "maintain_node_health"
1710 SS_UID_POOL = "uid_pool"
1711 SS_NODEGROUPS = "nodegroups"
1712
1713 SS_FILE_PERMS = 0444
1714
1715 # cluster wide default parameters
1716 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
1717
1718 HVC_DEFAULTS = {
1719   HT_XEN_PVM: {
1720     HV_USE_BOOTLOADER: False,
1721     HV_BOOTLOADER_PATH: XEN_BOOTLOADER,
1722     HV_BOOTLOADER_ARGS: "",
1723     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU",
1724     HV_INITRD_PATH: "",
1725     HV_ROOT_PATH: "/dev/sda1",
1726     HV_KERNEL_ARGS: "ro",
1727     HV_MIGRATION_PORT: 8002,
1728     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1729     HV_BLOCKDEV_PREFIX: "sd",
1730     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1731     HV_CPU_MASK: CPU_PINNING_ALL,
1732     },
1733   HT_XEN_HVM: {
1734     HV_BOOT_ORDER: "cd",
1735     HV_CDROM_IMAGE_PATH: "",
1736     HV_NIC_TYPE: HT_NIC_RTL8139,
1737     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1738     HV_VNC_BIND_ADDRESS: IP4_ADDRESS_ANY,
1739     HV_VNC_PASSWORD_FILE: VNC_PASSWORD_FILE,
1740     HV_ACPI: True,
1741     HV_PAE: True,
1742     HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
1743     HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
1744     HV_MIGRATION_PORT: 8002,
1745     HV_MIGRATION_MODE: HT_MIGRATION_NONLIVE,
1746     HV_USE_LOCALTIME: False,
1747     HV_BLOCKDEV_PREFIX: "hd",
1748     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1749     HV_CPU_MASK: CPU_PINNING_ALL,
1750     },
1751   HT_KVM: {
1752     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU",
1753     HV_INITRD_PATH: "",
1754     HV_KERNEL_ARGS: "ro",
1755     HV_ROOT_PATH: "/dev/vda1",
1756     HV_ACPI: True,
1757     HV_SERIAL_CONSOLE: True,
1758     HV_VNC_BIND_ADDRESS: "",
1759     HV_VNC_TLS: False,
1760     HV_VNC_X509: "",
1761     HV_VNC_X509_VERIFY: False,
1762     HV_VNC_PASSWORD_FILE: "",
1763     HV_KVM_SPICE_BIND: "",
1764     HV_KVM_SPICE_IP_VERSION: IFACE_NO_IP_VERSION_SPECIFIED,
1765     HV_KVM_SPICE_PASSWORD_FILE: "",
1766     HV_KVM_SPICE_LOSSLESS_IMG_COMPR: "",
1767     HV_KVM_SPICE_JPEG_IMG_COMPR: "",
1768     HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: "",
1769     HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: "",
1770     HV_KVM_SPICE_AUDIO_COMPR: True,
1771     HV_KVM_SPICE_USE_TLS: False,
1772     HV_KVM_SPICE_TLS_CIPHERS: OPENSSL_CIPHERS,
1773     HV_KVM_SPICE_USE_VDAGENT: True,
1774     HV_KVM_FLOPPY_IMAGE_PATH: "",
1775     HV_CDROM_IMAGE_PATH: "",
1776     HV_KVM_CDROM2_IMAGE_PATH: "",
1777     HV_BOOT_ORDER: HT_BO_DISK,
1778     HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
1779     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1780     HV_KVM_CDROM_DISK_TYPE: "",
1781     HV_USB_MOUSE: "",
1782     HV_KEYMAP: "",
1783     HV_MIGRATION_PORT: 8102,
1784     HV_MIGRATION_BANDWIDTH: 32, # MiB/s
1785     HV_MIGRATION_DOWNTIME: 30,  # ms
1786     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1787     HV_USE_LOCALTIME: False,
1788     HV_DISK_CACHE: HT_CACHE_DEFAULT,
1789     HV_SECURITY_MODEL: HT_SM_NONE,
1790     HV_SECURITY_DOMAIN: "",
1791     HV_KVM_FLAG: "",
1792     HV_VHOST_NET: False,
1793     HV_KVM_USE_CHROOT: False,
1794     HV_MEM_PATH: "",
1795     HV_REBOOT_BEHAVIOR: INSTANCE_REBOOT_ALLOWED,
1796     HV_CPU_MASK: CPU_PINNING_ALL,
1797     },
1798   HT_FAKE: {
1799     },
1800   HT_CHROOT: {
1801     HV_INIT_SCRIPT: "/ganeti-chroot",
1802     },
1803   HT_LXC: {
1804     HV_CPU_MASK: "",
1805     },
1806   }
1807
1808 HVC_GLOBALS = frozenset([
1809   HV_MIGRATION_PORT,
1810   HV_MIGRATION_BANDWIDTH,
1811   HV_MIGRATION_MODE,
1812   ])
1813
1814 BEC_DEFAULTS = {
1815   BE_MINMEM: 128,
1816   BE_MAXMEM: 128,
1817   BE_VCPUS: 1,
1818   BE_AUTO_BALANCE: True,
1819   BE_ALWAYS_FAILOVER: False,
1820   }
1821
1822 NDC_DEFAULTS = {
1823   ND_OOB_PROGRAM: None,
1824   ND_SPINDLE_COUNT: 1,
1825   }
1826
1827 DISK_LD_DEFAULTS = {
1828   LD_DRBD8: {
1829     LDP_RESYNC_RATE: CLASSIC_DRBD_SYNC_SPEED,
1830     LDP_BARRIERS: _autoconf.DRBD_BARRIERS,
1831     LDP_NO_META_FLUSH: _autoconf.DRBD_NO_META_FLUSH,
1832     LDP_DEFAULT_METAVG: DEFAULT_VG,
1833     LDP_DISK_CUSTOM: "",
1834     LDP_NET_CUSTOM: "",
1835     LDP_DYNAMIC_RESYNC: False,
1836
1837     # The default values for the DRBD dynamic resync speed algorithm are taken
1838     # from the drbsetup 8.3.11 man page, except for c-plan-ahead (that we
1839     # don't need to set to 0, because we have a separate option to enable it)
1840     # and for c-max-rate, that we cap to the default value for the static resync
1841     # rate.
1842     LDP_PLAN_AHEAD: 20, # ds
1843     LDP_FILL_TARGET: 0, # sectors
1844     LDP_DELAY_TARGET: 1, # ds
1845     LDP_MAX_RATE: CLASSIC_DRBD_SYNC_SPEED, # KiB/s
1846     LDP_MIN_RATE: 4 * 1024, # KiB/s
1847     },
1848   LD_LV: {
1849     LDP_STRIPES: _autoconf.LVM_STRIPECOUNT
1850     },
1851   LD_FILE: {
1852     },
1853   LD_BLOCKDEV: {
1854     },
1855   LD_RBD: {
1856     LDP_POOL: "rbd"
1857     },
1858   }
1859
1860 # readability shortcuts
1861 _LV_DEFAULTS = DISK_LD_DEFAULTS[LD_LV]
1862 _DRBD_DEFAULTS = DISK_LD_DEFAULTS[LD_DRBD8]
1863
1864 DISK_DT_DEFAULTS = {
1865   DT_PLAIN: {
1866     LV_STRIPES: DISK_LD_DEFAULTS[LD_LV][LDP_STRIPES],
1867     },
1868   DT_DRBD8: {
1869     DRBD_RESYNC_RATE: _DRBD_DEFAULTS[LDP_RESYNC_RATE],
1870     DRBD_DATA_STRIPES: _LV_DEFAULTS[LDP_STRIPES],
1871     DRBD_META_STRIPES: _LV_DEFAULTS[LDP_STRIPES],
1872     DRBD_DISK_BARRIERS: _DRBD_DEFAULTS[LDP_BARRIERS],
1873     DRBD_META_BARRIERS: _DRBD_DEFAULTS[LDP_NO_META_FLUSH],
1874     DRBD_DEFAULT_METAVG: _DRBD_DEFAULTS[LDP_DEFAULT_METAVG],
1875     DRBD_DISK_CUSTOM: _DRBD_DEFAULTS[LDP_DISK_CUSTOM],
1876     DRBD_NET_CUSTOM: _DRBD_DEFAULTS[LDP_NET_CUSTOM],
1877     DRBD_DYNAMIC_RESYNC: _DRBD_DEFAULTS[LDP_DYNAMIC_RESYNC],
1878     DRBD_PLAN_AHEAD: _DRBD_DEFAULTS[LDP_PLAN_AHEAD],
1879     DRBD_FILL_TARGET: _DRBD_DEFAULTS[LDP_FILL_TARGET],
1880     DRBD_DELAY_TARGET: _DRBD_DEFAULTS[LDP_DELAY_TARGET],
1881     DRBD_MAX_RATE: _DRBD_DEFAULTS[LDP_MAX_RATE],
1882     DRBD_MIN_RATE: _DRBD_DEFAULTS[LDP_MIN_RATE],
1883     },
1884   DT_DISKLESS: {
1885     },
1886   DT_FILE: {
1887     },
1888   DT_SHARED_FILE: {
1889     },
1890   DT_BLOCK: {
1891     },
1892   DT_RBD: {
1893     RBD_POOL: DISK_LD_DEFAULTS[LD_RBD][LDP_POOL]
1894     },
1895   }
1896
1897 # we don't want to export the shortcuts
1898 del _LV_DEFAULTS, _DRBD_DEFAULTS
1899
1900 NICC_DEFAULTS = {
1901   NIC_MODE: NIC_MODE_BRIDGED,
1902   NIC_LINK: DEFAULT_BRIDGE,
1903   }
1904
1905 # All of the following values are quite arbitrarily - there are no
1906 # "good" defaults, these must be customised per-site
1907 IPOLICY_DEFAULTS = {
1908   ISPECS_MIN: {
1909     ISPEC_MEM_SIZE: 128,
1910     ISPEC_CPU_COUNT: 1,
1911     ISPEC_DISK_COUNT: 1,
1912     ISPEC_DISK_SIZE: 1024,
1913     ISPEC_NIC_COUNT: 1,
1914     },
1915   ISPECS_MAX: {
1916     ISPEC_MEM_SIZE: 32768,
1917     ISPEC_CPU_COUNT: 8,
1918     ISPEC_DISK_COUNT: MAX_DISKS,
1919     ISPEC_DISK_SIZE: 1024 * 1024,
1920     ISPEC_NIC_COUNT: MAX_NICS,
1921     },
1922   ISPECS_STD: {
1923     ISPEC_MEM_SIZE: 128,
1924     ISPEC_CPU_COUNT: 1,
1925     ISPEC_DISK_COUNT: 1,
1926     ISPEC_DISK_SIZE: 1024,
1927     ISPEC_NIC_COUNT: 1,
1928     },
1929   IPOLICY_DTS: DISK_TEMPLATES,
1930   IPOLICY_VCPU_RATIO: 4.0,
1931   IPOLICY_SPINDLE_RATIO: 32.0,
1932   }
1933
1934 MASTER_POOL_SIZE_DEFAULT = 10
1935
1936 CONFD_PROTOCOL_VERSION = 1
1937
1938 CONFD_REQ_PING = 0
1939 CONFD_REQ_NODE_ROLE_BYNAME = 1
1940 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP = 2
1941 CONFD_REQ_CLUSTER_MASTER = 3
1942 CONFD_REQ_NODE_PIP_LIST = 4
1943 CONFD_REQ_MC_PIP_LIST = 5
1944 CONFD_REQ_INSTANCES_IPS_LIST = 6
1945
1946 # Confd request query fields. These are used to narrow down queries.
1947 # These must be strings rather than integers, because json-encoding
1948 # converts them to strings anyway, as they're used as dict-keys.
1949 CONFD_REQQ_LINK = "0"
1950 CONFD_REQQ_IP = "1"
1951 CONFD_REQQ_IPLIST = "2"
1952 CONFD_REQQ_FIELDS = "3"
1953
1954 CONFD_REQFIELD_NAME = "0"
1955 CONFD_REQFIELD_IP = "1"
1956 CONFD_REQFIELD_MNODE_PIP = "2"
1957
1958 CONFD_REQS = frozenset([
1959   CONFD_REQ_PING,
1960   CONFD_REQ_NODE_ROLE_BYNAME,
1961   CONFD_REQ_NODE_PIP_BY_INSTANCE_IP,
1962   CONFD_REQ_CLUSTER_MASTER,
1963   CONFD_REQ_NODE_PIP_LIST,
1964   CONFD_REQ_MC_PIP_LIST,
1965   CONFD_REQ_INSTANCES_IPS_LIST,
1966   ])
1967
1968 CONFD_REPL_STATUS_OK = 0
1969 CONFD_REPL_STATUS_ERROR = 1
1970 CONFD_REPL_STATUS_NOTIMPLEMENTED = 2
1971
1972 CONFD_REPL_STATUSES = frozenset([
1973   CONFD_REPL_STATUS_OK,
1974   CONFD_REPL_STATUS_ERROR,
1975   CONFD_REPL_STATUS_NOTIMPLEMENTED,
1976   ])
1977
1978 (CONFD_NODE_ROLE_MASTER,
1979  CONFD_NODE_ROLE_CANDIDATE,
1980  CONFD_NODE_ROLE_OFFLINE,
1981  CONFD_NODE_ROLE_DRAINED,
1982  CONFD_NODE_ROLE_REGULAR,
1983  ) = range(5)
1984
1985 # A few common errors for confd
1986 CONFD_ERROR_UNKNOWN_ENTRY = 1
1987 CONFD_ERROR_INTERNAL = 2
1988 CONFD_ERROR_ARGUMENT = 3
1989
1990 # Each request is "salted" by the current timestamp.
1991 # This constants decides how many seconds of skew to accept.
1992 # TODO: make this a default and allow the value to be more configurable
1993 CONFD_MAX_CLOCK_SKEW = 2 * NODE_MAX_CLOCK_SKEW
1994
1995 # When we haven't reloaded the config for more than this amount of seconds, we
1996 # force a test to see if inotify is betraying us.
1997 CONFD_CONFIG_RELOAD_TIMEOUT = 60
1998
1999 # If we receive more than one update in this amount of seconds, we move to
2000 # polling every RATELIMIT seconds, rather than relying on inotify, to be able
2001 # to serve more requests.
2002 CONFD_CONFIG_RELOAD_RATELIMIT = 2
2003
2004 # Magic number prepended to all confd queries.
2005 # This allows us to distinguish different types of confd protocols and handle
2006 # them. For example by changing this we can move the whole payload to be
2007 # compressed, or move away from json.
2008 CONFD_MAGIC_FOURCC = "plj0"
2009
2010 # By default a confd request is sent to the minimum between this number and all
2011 # MCs. 6 was chosen because even in the case of a disastrous 50% response rate,
2012 # we should have enough answers to be able to compare more than one.
2013 CONFD_DEFAULT_REQ_COVERAGE = 6
2014
2015 # Timeout in seconds to expire pending query request in the confd client
2016 # library. We don't actually expect any answer more than 10 seconds after we
2017 # sent a request.
2018 CONFD_CLIENT_EXPIRE_TIMEOUT = 10
2019
2020 # Maximum UDP datagram size.
2021 # On IPv4: 64K - 20 (ip header size) - 8 (udp header size) = 65507
2022 # On IPv6: 64K - 40 (ip6 header size) - 8 (udp header size) = 65487
2023 #   (assuming we can't use jumbo frames)
2024 # We just set this to 60K, which should be enough
2025 MAX_UDP_DATA_SIZE = 61440
2026
2027 # User-id pool minimum/maximum acceptable user-ids.
2028 UIDPOOL_UID_MIN = 0
2029 UIDPOOL_UID_MAX = 2 ** 32 - 1 # Assuming 32 bit user-ids
2030
2031 # Name or path of the pgrep command
2032 PGREP = "pgrep"
2033
2034 # Name of the node group that gets created at cluster init or upgrade
2035 INITIAL_NODE_GROUP_NAME = "default"
2036
2037 # Possible values for NodeGroup.alloc_policy
2038 ALLOC_POLICY_PREFERRED = "preferred"
2039 ALLOC_POLICY_LAST_RESORT = "last_resort"
2040 ALLOC_POLICY_UNALLOCABLE = "unallocable"
2041 VALID_ALLOC_POLICIES = [
2042   ALLOC_POLICY_PREFERRED,
2043   ALLOC_POLICY_LAST_RESORT,
2044   ALLOC_POLICY_UNALLOCABLE,
2045   ]
2046
2047 # Temporary external/shared storage parameters
2048 BLOCKDEV_DRIVER_MANUAL = "manual"
2049
2050 # qemu-img path, required for ovfconverter
2051 QEMUIMG_PATH = _autoconf.QEMUIMG_PATH
2052
2053 # Whether htools was enabled at compilation time
2054 HTOOLS = _autoconf.HTOOLS
2055 # The hail iallocator
2056 IALLOC_HAIL = "hail"
2057
2058 # Fake opcodes for functions that have hooks attached to them via
2059 # backend.RunLocalHooks
2060 FAKE_OP_MASTER_TURNUP = "OP_CLUSTER_IP_TURNUP"
2061 FAKE_OP_MASTER_TURNDOWN = "OP_CLUSTER_IP_TURNDOWN"
2062
2063 # Do not re-export imported modules
2064 del re, _vcsversion, _autoconf