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