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

   1 #
   2 #
   3
   4 # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful, but
  12 # WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 # 02110-1301, USA.
  20
  21
  22 """Module holding different constants."""
  23
  24 import re
  25
  26 from ganeti import _autoconf
  27
  28 # various versions
  29 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
  30 OS_API_V10 = 10
  31 OS_API_V15 = 15
  32 OS_API_V20 = 20
  33 OS_API_VERSIONS = frozenset([OS_API_V10, OS_API_V15, OS_API_V20])
  34 VCS_VERSION = _autoconf.VCS_VERSION
  35 EXPORT_VERSION = 0
  36 RAPI_VERSION = 2
  37
  38
  39 # Format for CONFIG_VERSION:
  40 #   01 03 0123 = 01030123
  41 #   ^^ ^^ ^^^^
  42 #   |  |  + Configuration version/revision
  43 #   |  + Minor version
  44 #   + Major version
  45 #
  46 # It stored as an integer. Make sure not to write an octal number.
  47
  48 # BuildVersion and SplitVersion must be in here because we can't import other
  49 # modules. The cfgupgrade tool must be able to read and write version numbers
  50 # and thus requires these functions. To avoid code duplication, they're kept in
  51 # here.
  52
  53 def BuildVersion(major, minor, revision):
  54   """Calculates int version number from major, minor and revision numbers.
  55
  56   Returns: int representing version number
  57
  58   """
  59   assert isinstance(major, int)
  60   assert isinstance(minor, int)
  61   assert isinstance(revision, int)
  62   return (1000000 * major +
  63             10000 * minor +
  64                 1 * revision)
  65
  66
  67 def SplitVersion(version):
  68   """Splits version number stored in an int.
  69
  70   Returns: tuple; (major, minor, revision)
  71
  72   """
  73   assert isinstance(version, int)
  74
  75   (major, remainder) = divmod(version, 1000000)
  76   (minor, revision) = divmod(remainder, 10000)
  77
  78   return (major, minor, revision)
  79
  80
  81 CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
  82 CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
  83 CONFIG_REVISION = 0
  84 CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
  85
  86 #: RPC protocol version
  87 PROTOCOL_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, 0)
  88
  89 # user separation
  90 DAEMONS_GROUP = _autoconf.DAEMONS_GROUP
  91 ADMIN_GROUP = _autoconf.ADMIN_GROUP
  92 MASTERD_USER = _autoconf.MASTERD_USER
  93 MASTERD_GROUP = _autoconf.MASTERD_GROUP
  94 RAPI_USER = _autoconf.RAPI_USER
  95 RAPI_GROUP = _autoconf.RAPI_GROUP
  96 CONFD_USER = _autoconf.CONFD_USER
  97 CONFD_GROUP = _autoconf.CONFD_GROUP
  98 NODED_USER = _autoconf.NODED_USER
  99
 100
 101 # Wipe
 102 DD_CMD = "dd"
 103 WIPE_BLOCK_SIZE = 1024**2
 104 MAX_WIPE_CHUNK = 1024 # 1GB
 105 MIN_WIPE_CHUNK_PERCENT = 10
 106
 107
 108 # file paths
 109 DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti"
 110 RUN_DIR = _autoconf.LOCALSTATEDIR + "/run"
 111 RUN_GANETI_DIR = RUN_DIR + "/ganeti"
 112 BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache"
 113 DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks"
 114 RUN_DIRS_MODE = 0775
 115 SOCKET_DIR = RUN_GANETI_DIR + "/socket"
 116 SECURE_DIR_MODE = 0700
 117 SECURE_FILE_MODE = 0600
 118 SOCKET_DIR_MODE = 0750
 119 CRYPTO_KEYS_DIR = RUN_GANETI_DIR + "/crypto"
 120 CRYPTO_KEYS_DIR_MODE = SECURE_DIR_MODE
 121 IMPORT_EXPORT_DIR = RUN_GANETI_DIR + "/import-export"
 122 IMPORT_EXPORT_DIR_MODE = 0755
 123 ADOPTABLE_BLOCKDEV_ROOT = "/dev/disk/"
 124 # keep RUN_GANETI_DIR first here, to make sure all get created when the node
 125 # daemon is started (this takes care of RUN_DIR being tmpfs)
 126 SUB_RUN_DIRS = [ RUN_GANETI_DIR, BDEV_CACHE_DIR, DISK_LINKS_DIR ]
 127 LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock"
 128 SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock"
 129 # User-id pool lock directory
 130 # The user-ids that are in use have a corresponding lock file in this directory
 131 UIDPOOL_LOCKDIR = RUN_GANETI_DIR + "/uid-pool"
 132 CLUSTER_CONF_FILE = DATA_DIR + "/config.data"
 133 NODED_CERT_FILE = DATA_DIR + "/server.pem"
 134 RAPI_CERT_FILE = DATA_DIR + "/rapi.pem"
 135 CONFD_HMAC_KEY = DATA_DIR + "/hmac.key"
 136 CLUSTER_DOMAIN_SECRET_FILE = DATA_DIR + "/cluster-domain-secret"
 137 WATCHER_STATEFILE = DATA_DIR + "/watcher.data"
 138 WATCHER_PAUSEFILE = DATA_DIR + "/watcher.pause"
 139 INSTANCE_UPFILE = RUN_GANETI_DIR + "/instance-status"
 140 SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts"
 141 RAPI_USERS_FILE = DATA_DIR + "/rapi/users"
 142 QUEUE_DIR = DATA_DIR + "/queue"
 143 DAEMON_UTIL = _autoconf.PKGLIBDIR + "/daemon-util"
 144 SETUP_SSH = _autoconf.TOOLSDIR + "/setup-ssh"
 145 KVM_IFUP = _autoconf.PKGLIBDIR + "/kvm-ifup"
 146 ETC_HOSTS = "/etc/hosts"
 147 DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
 148 DEFAULT_SHARED_FILE_STORAGE_DIR = _autoconf.SHARED_FILE_STORAGE_DIR
 149 ENABLE_FILE_STORAGE = _autoconf.ENABLE_FILE_STORAGE
 150 ENABLE_SHARED_FILE_STORAGE = _autoconf.ENABLE_SHARED_FILE_STORAGE
 151 SYSCONFDIR = _autoconf.SYSCONFDIR
 152 TOOLSDIR = _autoconf.TOOLSDIR
 153 CONF_DIR = SYSCONFDIR + "/ganeti"
 154
 155 ALL_CERT_FILES = frozenset([NODED_CERT_FILE, RAPI_CERT_FILE])
 156
 157 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 158
 159 NODED = "ganeti-noded"
 160 CONFD = "ganeti-confd"
 161 RAPI = "ganeti-rapi"
 162 MASTERD = "ganeti-masterd"
 163 # used in the ganeti-nbma project
 164 NLD = "ganeti-nld"
 165
 166 DAEMONS_PORTS = {
 167   # daemon-name: ("proto", "default-port")
 168   NODED: ("tcp", 1811),
 169   CONFD: ("udp", 1814),
 170   RAPI: ("tcp", 5080),
 171   "ssh": ("tcp", 22),
 172   # used in the ganeti-nbma project
 173   NLD: ("udp", 1816),
 174 }
 175 DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
 176 DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
 177 DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
 178 # used in the ganeti-nbma project
 179 DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
 180
 181 FIRST_DRBD_PORT = 11000
 182 LAST_DRBD_PORT = 14999
 183 MASTER_SCRIPT = "ganeti-master"
 184
 185 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
 186 DAEMONS_LOGFILES = {
 187   # "daemon-name": "logfile"
 188   NODED: LOG_DIR + "node-daemon.log",
 189   CONFD: LOG_DIR + "conf-daemon.log",
 190   RAPI: LOG_DIR + "rapi-daemon.log",
 191   MASTERD: LOG_DIR + "master-daemon.log",
 192   # used in the ganeti-nbma project
 193   NLD: LOG_DIR + "nl-daemon.log",
 194   }
 195
 196 LOG_OS_DIR = LOG_DIR + "os"
 197 LOG_WATCHER = LOG_DIR + "watcher.log"
 198 LOG_COMMANDS = LOG_DIR + "commands.log"
 199 LOG_BURNIN = LOG_DIR + "burnin.log"
 200 LOG_SETUP_SSH = LOG_DIR + "setup-ssh.log"
 201
 202 DEV_CONSOLE = "/dev/console"
 203
 204 PROC_MOUNTS = "/proc/mounts"
 205
 206 # Local UniX Interface related constants
 207 LUXI_EOM = "\3"
 208 LUXI_VERSION = CONFIG_VERSION
 209
 210 # one of 'no', 'yes', 'only'
 211 SYSLOG_USAGE = _autoconf.SYSLOG_USAGE
 212 SYSLOG_NO = "no"
 213 SYSLOG_YES = "yes"
 214 SYSLOG_ONLY = "only"
 215 SYSLOG_SOCKET = "/dev/log"
 216
 217 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
 218 EXPORT_DIR = _autoconf.EXPORT_DIR
 219
 220 EXPORT_CONF_FILE = "config.ini"
 221
 222 XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
 223 XEN_KERNEL = _autoconf.XEN_KERNEL
 224 XEN_INITRD = _autoconf.XEN_INITRD
 225
 226 KVM_PATH = _autoconf.KVM_PATH
 227 SOCAT_PATH = _autoconf.SOCAT_PATH
 228 SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
 229 SOCAT_USE_COMPRESS = _autoconf.SOCAT_USE_COMPRESS
 230 SOCAT_ESCAPE_CODE = "0x1d"
 231
 232 #: Console as SSH command
 233 CONS_SSH = "ssh"
 234
 235 #: Console as VNC server
 236 CONS_VNC = "vnc"
 237
 238 #: Display a message for console access
 239 CONS_MESSAGE = "msg"
 240
 241 #: All console types
 242 CONS_ALL = frozenset([CONS_SSH, CONS_VNC, CONS_MESSAGE])
 243
 244 # For RSA keys more bits are better, but they also make operations more
 245 # expensive. NIST SP 800-131 recommends a minimum of 2048 bits from the year
 246 # 2010 on.
 247 RSA_KEY_BITS = 2048
 248
 249 # Ciphers allowed for SSL connections. For the format, see ciphers(1). A better
 250 # way to disable ciphers would be to use the exclamation mark (!), but socat
 251 # versions below 1.5 can't parse exclamation marks in options properly. When
 252 # modifying the ciphers, ensure not to accidentially add something after it's
 253 # been removed. Use the "openssl" utility to check the allowed ciphers, e.g.
 254 # "openssl ciphers -v HIGH:-DES".
 255 OPENSSL_CIPHERS = "HIGH:-DES:-3DES:-EXPORT:-ADH"
 256
 257 # Digest used to sign certificates ("openssl x509" uses SHA1 by default)
 258 X509_CERT_SIGN_DIGEST = "SHA1"
 259
 260 # Default validity of certificates in days
 261 X509_CERT_DEFAULT_VALIDITY = 365 * 5
 262
 263 # commonName (CN) used in certificates
 264 X509_CERT_CN = "ganeti.example.com"
 265
 266 X509_CERT_SIGNATURE_HEADER = "X-Ganeti-Signature"
 267
 268 IMPORT_EXPORT_DAEMON = _autoconf.PKGLIBDIR + "/import-export"
 269
 270 # Import/export daemon mode
 271 IEM_IMPORT = "import"
 272 IEM_EXPORT = "export"
 273
 274 # Import/export transport compression
 275 IEC_NONE = "none"
 276 IEC_GZIP = "gzip"
 277 IEC_ALL = frozenset([
 278   IEC_NONE,
 279   IEC_GZIP,
 280   ])
 281
 282 IE_CUSTOM_SIZE = "fd"
 283
 284 IE_MAGIC_RE = re.compile(r"^[-_.a-zA-Z0-9]{5,100}$")
 285
 286 # Import/export I/O
 287 # Direct file I/O, equivalent to a shell's I/O redirection using '<' or '>'
 288 IEIO_FILE = "file"
 289 # Raw block device I/O using "dd"
 290 IEIO_RAW_DISK = "raw"
 291 # OS definition import/export script
 292 IEIO_SCRIPT = "script"
 293
 294 VALUE_DEFAULT = "default"
 295 VALUE_AUTO = "auto"
 296 VALUE_GENERATE = "generate"
 297 VALUE_NONE = "none"
 298 VALUE_TRUE = "true"
 299 VALUE_FALSE = "false"
 300
 301 # External script validation mask
 302 EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")
 303
 304 # hooks-related constants
 305 HOOKS_BASE_DIR = CONF_DIR + "/hooks"
 306 HOOKS_PHASE_PRE = "pre"
 307 HOOKS_PHASE_POST = "post"
 308 HOOKS_NAME_CFGUPDATE = "config-update"
 309 HOOKS_NAME_WATCHER = "watcher"
 310 HOOKS_VERSION = 2
 311
 312 # hooks subject type (what object type does the LU deal with)
 313 HTYPE_CLUSTER = "CLUSTER"
 314 HTYPE_NODE = "NODE"
 315 HTYPE_GROUP = "GROUP"
 316 HTYPE_INSTANCE = "INSTANCE"
 317
 318 HKR_SKIP = 0
 319 HKR_FAIL = 1
 320 HKR_SUCCESS = 2
 321
 322 # Storage types
 323 ST_FILE = "file"
 324 ST_LVM_PV = "lvm-pv"
 325 ST_LVM_VG = "lvm-vg"
 326
 327 # Storage fields
 328 # first two are valid in LU context only, not passed to backend
 329 SF_NODE = "node"
 330 SF_TYPE = "type"
 331 # and the rest are valid in backend
 332 SF_NAME = "name"
 333 SF_SIZE = "size"
 334 SF_FREE = "free"
 335 SF_USED = "used"
 336 SF_ALLOCATABLE = "allocatable"
 337
 338 # Storage operations
 339 SO_FIX_CONSISTENCY = "fix-consistency"
 340
 341 # Available fields per storage type
 342 VALID_STORAGE_FIELDS = frozenset([SF_NAME, SF_TYPE, SF_SIZE,
 343                                   SF_USED, SF_FREE, SF_ALLOCATABLE])
 344
 345 VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
 346
 347 MODIFIABLE_STORAGE_FIELDS = {
 348   ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
 349   }
 350
 351 VALID_STORAGE_OPERATIONS = {
 352   ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
 353   }
 354
 355 # Local disk status
 356 # Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
 357 (LDS_OKAY,
 358  LDS_UNKNOWN,
 359  LDS_FAULTY) = range(1, 4)
 360
 361 # disk template types
 362 DT_DISKLESS = "diskless"
 363 DT_PLAIN = "plain"
 364 DT_DRBD8 = "drbd"
 365 DT_FILE = "file"
 366 DT_SHARED_FILE = "sharedfile"
 367 DT_BLOCK = "blockdev"
 368
 369 # the set of network-mirrored disk templates
 370 DTS_INT_MIRROR = frozenset([DT_DRBD8])
 371
 372 # the set of externally-mirrored disk templates (e.g. SAN, NAS)
 373 DTS_EXT_MIRROR = frozenset([DT_SHARED_FILE, DT_BLOCK])
 374
 375 # the set of non-lvm-based disk templates
 376 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE, DT_SHARED_FILE, DT_BLOCK])
 377
 378 # the set of disk templates which can be grown
 379 DTS_GROWABLE = frozenset([DT_PLAIN, DT_DRBD8, DT_FILE, DT_SHARED_FILE])
 380
 381 # the set of disk templates that allow adoption
 382 DTS_MAY_ADOPT = frozenset([DT_PLAIN, DT_BLOCK])
 383
 384 # the set of disk templates that *must* use adoption
 385 DTS_MUST_ADOPT = frozenset([DT_BLOCK])
 386
 387 # the set of disk templates that allow migrations
 388 DTS_MIRRORED = frozenset.union(DTS_INT_MIRROR, DTS_EXT_MIRROR)
 389
 390
 391 # logical disk types
 392 LD_LV = "lvm"
 393 LD_DRBD8 = "drbd8"
 394 LD_FILE = "file"
 395 LD_BLOCKDEV = "blockdev"
 396 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8, LD_BLOCKDEV])
 397
 398 # drbd constants
 399 DRBD_HMAC_ALG = "md5"
 400 DRBD_NET_PROTOCOL = "C"
 401 DRBD_BARRIERS = _autoconf.DRBD_BARRIERS
 402
 403 # file backend driver
 404 FD_LOOP = "loop"
 405 FD_BLKTAP = "blktap"
 406
 407 # the set of drbd-like disk types
 408 LDS_DRBD = frozenset([LD_DRBD8])
 409
 410 # disk access mode
 411 DISK_RDONLY = "ro"
 412 DISK_RDWR = "rw"
 413 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
 414
 415 # disk replacement mode
 416 REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
 417 REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
 418 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
 419 REPLACE_DISK_AUTO = "replace_auto"
 420 REPLACE_MODES = frozenset([
 421   REPLACE_DISK_PRI,
 422   REPLACE_DISK_SEC,
 423   REPLACE_DISK_CHG,
 424   REPLACE_DISK_AUTO,
 425   ])
 426
 427 # Instance export mode
 428 EXPORT_MODE_LOCAL = "local"
 429 EXPORT_MODE_REMOTE = "remote"
 430 EXPORT_MODES = frozenset([
 431   EXPORT_MODE_LOCAL,
 432   EXPORT_MODE_REMOTE,
 433   ])
 434
 435 # lock recalculate mode
 436 LOCKS_REPLACE = 'replace'
 437 LOCKS_APPEND = 'append'
 438
 439 # instance creation modes
 440 INSTANCE_CREATE = "create"
 441 INSTANCE_IMPORT = "import"
 442 INSTANCE_REMOTE_IMPORT = "remote-import"
 443 INSTANCE_CREATE_MODES = frozenset([
 444   INSTANCE_CREATE,
 445   INSTANCE_IMPORT,
 446   INSTANCE_REMOTE_IMPORT,
 447   ])
 448
 449 # Remote import/export handshake message and version
 450 RIE_VERSION = 0
 451 RIE_HANDSHAKE = "Hi, I'm Ganeti"
 452
 453 # Remote import/export certificate validity in seconds
 454 RIE_CERT_VALIDITY = 24 * 60 * 60
 455
 456 # Overall timeout for establishing connection
 457 RIE_CONNECT_TIMEOUT = 180
 458
 459 # Export only: how long to wait per connection attempt (seconds)
 460 RIE_CONNECT_ATTEMPT_TIMEOUT = 20
 461
 462 # Export only: number of attempts to connect
 463 RIE_CONNECT_RETRIES = 10
 464
 465 #: Give child process up to 5 seconds to exit after sending a signal
 466 CHILD_LINGER_TIMEOUT = 5.0
 467
 468 DISK_TEMPLATES = frozenset([DT_DISKLESS, DT_PLAIN, DT_DRBD8,
 469                             DT_FILE, DT_SHARED_FILE, DT_BLOCK])
 470
 471 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
 472
 473 # import/export config options
 474 INISECT_EXP = "export"
 475 INISECT_INS = "instance"
 476 INISECT_HYP = "hypervisor"
 477 INISECT_BEP = "backend"
 478 INISECT_OSP = "os"
 479
 480 # dynamic device modification
 481 DDM_ADD = "add"
 482 DDM_REMOVE = "remove"
 483 DDMS_VALUES = frozenset([DDM_ADD, DDM_REMOVE])
 484
 485 # common exit codes
 486 EXIT_SUCCESS = 0
 487 EXIT_FAILURE = 1
 488 EXIT_NOTCLUSTER = 5
 489 EXIT_NOTMASTER = 11
 490 EXIT_NODESETUP_ERROR = 12
 491 EXIT_CONFIRMATION = 13 # need user confirmation
 492
 493 #: Exit code for query operations with unknown fields
 494 EXIT_UNKNOWN_FIELD = 14
 495
 496 # tags
 497 TAG_CLUSTER = "cluster"
 498 TAG_NODE = "node"
 499 TAG_INSTANCE = "instance"
 500 VALID_TAG_TYPES = frozenset([
 501   TAG_CLUSTER,
 502   TAG_NODE,
 503   TAG_INSTANCE,
 504   ])
 505 MAX_TAG_LEN = 128
 506 MAX_TAGS_PER_OBJ = 4096
 507
 508 # others
 509 DEFAULT_BRIDGE = "xen-br0"
 510 SYNC_SPEED = 60 * 1024
 511 IP4_ADDRESS_LOCALHOST = "127.0.0.1"
 512 IP4_ADDRESS_ANY = "0.0.0.0"
 513 IP6_ADDRESS_LOCALHOST = "::1"
 514 IP6_ADDRESS_ANY = "::"
 515 IP4_VERSION = 4
 516 IP6_VERSION = 6
 517 TCP_PING_TIMEOUT = 10
 518 GANETI_RUNAS = "root"
 519 DEFAULT_VG = "xenvg"
 520 DEFAULT_DRBD_HELPER = "/bin/true"
 521 MIN_VG_SIZE = 20480
 522 DEFAULT_MAC_PREFIX = "aa:00:00"
 523 LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT
 524 # default maximum instance wait time, in seconds.
 525 DEFAULT_SHUTDOWN_TIMEOUT = 120
 526 NODE_MAX_CLOCK_SKEW = 150
 527 # Time for an intra-cluster disk transfer to wait for a connection
 528 DISK_TRANSFER_CONNECT_TIMEOUT = 60
 529 # Disk index separator
 530 DISK_SEPARATOR = _autoconf.DISK_SEPARATOR
 531
 532 # runparts results
 533 (RUNPARTS_SKIP,
 534  RUNPARTS_RUN,
 535  RUNPARTS_ERR) = range(3)
 536
 537 RUNPARTS_STATUS = frozenset([RUNPARTS_SKIP, RUNPARTS_RUN, RUNPARTS_ERR])
 538
 539 # RPC constants
 540 (RPC_ENCODING_NONE,
 541  RPC_ENCODING_ZLIB_BASE64) = range(2)
 542
 543 # os related constants
 544 OS_SCRIPT_CREATE = 'create'
 545 OS_SCRIPT_IMPORT = 'import'
 546 OS_SCRIPT_EXPORT = 'export'
 547 OS_SCRIPT_RENAME = 'rename'
 548 OS_SCRIPT_VERIFY = 'verify'
 549 OS_SCRIPTS = frozenset([OS_SCRIPT_CREATE, OS_SCRIPT_IMPORT,
 550                         OS_SCRIPT_EXPORT, OS_SCRIPT_RENAME,
 551                         OS_SCRIPT_VERIFY])
 552
 553 OS_API_FILE = 'ganeti_api_version'
 554 OS_VARIANTS_FILE = 'variants.list'
 555 OS_PARAMETERS_FILE = 'parameters.list'
 556
 557 OS_VALIDATE_PARAMETERS = 'parameters'
 558 OS_VALIDATE_CALLS = frozenset([OS_VALIDATE_PARAMETERS])
 559
 560 # ssh constants
 561 SSH_CONFIG_DIR = _autoconf.SSH_CONFIG_DIR
 562 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_dsa_key"
 563 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
 564 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_rsa_key"
 565 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
 566 SSH = "ssh"
 567 SCP = "scp"
 568
 569 # reboot types
 570 INSTANCE_REBOOT_SOFT = "soft"
 571 INSTANCE_REBOOT_HARD = "hard"
 572 INSTANCE_REBOOT_FULL = "full"
 573
 574 REBOOT_TYPES = frozenset([INSTANCE_REBOOT_SOFT,
 575                           INSTANCE_REBOOT_HARD,
 576                           INSTANCE_REBOOT_FULL])
 577
 578 VTYPE_STRING = 'string'
 579 VTYPE_MAYBE_STRING = "maybe-string"
 580 VTYPE_BOOL = 'bool'
 581 VTYPE_SIZE = 'size' # size, in MiBs
 582 VTYPE_INT = 'int'
 583 ENFORCEABLE_TYPES = frozenset([
 584                       VTYPE_STRING,
 585                       VTYPE_MAYBE_STRING,
 586                       VTYPE_BOOL,
 587                       VTYPE_SIZE,
 588                       VTYPE_INT,
 589                       ])
 590
 591 # HV parameter names (global namespace)
 592 HV_BOOT_ORDER = "boot_order"
 593 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
 594 HV_NIC_TYPE = "nic_type"
 595 HV_DISK_TYPE = "disk_type"
 596 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
 597 HV_VNC_PASSWORD_FILE = "vnc_password_file"
 598 HV_VNC_TLS = "vnc_tls"
 599 HV_VNC_X509 = "vnc_x509_path"
 600 HV_VNC_X509_VERIFY = "vnc_x509_verify"
 601 HV_ACPI = "acpi"
 602 HV_PAE = "pae"
 603 HV_USE_BOOTLOADER = "use_bootloader"
 604 HV_BOOTLOADER_ARGS = "bootloader_args"
 605 HV_BOOTLOADER_PATH = "bootloader_path"
 606 HV_KERNEL_ARGS = "kernel_args"
 607 HV_KERNEL_PATH = "kernel_path"
 608 HV_INITRD_PATH = "initrd_path"
 609 HV_ROOT_PATH = "root_path"
 610 HV_SERIAL_CONSOLE = "serial_console"
 611 HV_USB_MOUSE = "usb_mouse"
 612 HV_DEVICE_MODEL = "device_model"
 613 HV_INIT_SCRIPT = "init_script"
 614 HV_MIGRATION_PORT = "migration_port"
 615 HV_MIGRATION_BANDWIDTH = "migration_bandwidth"
 616 HV_MIGRATION_DOWNTIME = "migration_downtime"
 617 HV_MIGRATION_MODE = "migration_mode"
 618 HV_USE_LOCALTIME = "use_localtime"
 619 HV_DISK_CACHE = "disk_cache"
 620 HV_SECURITY_MODEL = "security_model"
 621 HV_SECURITY_DOMAIN = "security_domain"
 622 HV_KVM_FLAG = "kvm_flag"
 623 HV_VHOST_NET = "vhost_net"
 624 HV_KVM_USE_CHROOT = "use_chroot"
 625 HV_CPU_MASK = "cpu_mask"
 626 HV_MEM_PATH = "mem_path"
 627 HV_BLOCKDEV_PREFIX = "blockdev_prefix"
 628
 629 HVS_PARAMETER_TYPES = {
 630   HV_BOOT_ORDER: VTYPE_STRING,
 631   HV_CDROM_IMAGE_PATH: VTYPE_STRING,
 632   HV_NIC_TYPE: VTYPE_STRING,
 633   HV_DISK_TYPE: VTYPE_STRING,
 634   HV_VNC_PASSWORD_FILE: VTYPE_STRING,
 635   HV_VNC_BIND_ADDRESS: VTYPE_STRING,
 636   HV_VNC_TLS: VTYPE_BOOL,
 637   HV_VNC_X509: VTYPE_STRING,
 638   HV_VNC_X509_VERIFY: VTYPE_BOOL,
 639   HV_ACPI: VTYPE_BOOL,
 640   HV_PAE: VTYPE_BOOL,
 641   HV_USE_BOOTLOADER: VTYPE_BOOL,
 642   HV_BOOTLOADER_PATH: VTYPE_STRING,
 643   HV_BOOTLOADER_ARGS: VTYPE_STRING,
 644   HV_KERNEL_PATH: VTYPE_STRING,
 645   HV_KERNEL_ARGS: VTYPE_STRING,
 646   HV_INITRD_PATH: VTYPE_STRING,
 647   HV_ROOT_PATH: VTYPE_STRING,
 648   HV_SERIAL_CONSOLE: VTYPE_BOOL,
 649   HV_USB_MOUSE: VTYPE_STRING,
 650   HV_DEVICE_MODEL: VTYPE_STRING,
 651   HV_INIT_SCRIPT: VTYPE_STRING,
 652   HV_MIGRATION_PORT: VTYPE_INT,
 653   HV_MIGRATION_BANDWIDTH: VTYPE_INT,
 654   HV_MIGRATION_DOWNTIME: VTYPE_INT,
 655   HV_MIGRATION_MODE: VTYPE_STRING,
 656   HV_USE_LOCALTIME: VTYPE_BOOL,
 657   HV_DISK_CACHE: VTYPE_STRING,
 658   HV_SECURITY_MODEL: VTYPE_STRING,
 659   HV_SECURITY_DOMAIN: VTYPE_STRING,
 660   HV_KVM_FLAG: VTYPE_STRING,
 661   HV_VHOST_NET: VTYPE_BOOL,
 662   HV_KVM_USE_CHROOT: VTYPE_BOOL,
 663   HV_CPU_MASK: VTYPE_STRING,
 664   HV_MEM_PATH: VTYPE_STRING,
 665   HV_BLOCKDEV_PREFIX: VTYPE_STRING,
 666   }
 667
 668 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
 669
 670 # Backend parameter names
 671 BE_MEMORY = "memory"
 672 BE_VCPUS = "vcpus"
 673 BE_AUTO_BALANCE = "auto_balance"
 674
 675 BES_PARAMETER_TYPES = {
 676     BE_MEMORY: VTYPE_SIZE,
 677     BE_VCPUS: VTYPE_INT,
 678     BE_AUTO_BALANCE: VTYPE_BOOL,
 679     }
 680
 681 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 682
 683 # Node parameter names
 684 ND_OOB_PROGRAM = "oob_program"
 685
 686 NDS_PARAMETER_TYPES = {
 687     ND_OOB_PROGRAM: VTYPE_MAYBE_STRING,
 688     }
 689
 690 NDS_PARAMETERS = frozenset(NDS_PARAMETER_TYPES.keys())
 691
 692 # OOB supported commands
 693 OOB_POWER_ON = "power-on"
 694 OOB_POWER_OFF = "power-off"
 695 OOB_POWER_CYCLE = "power-cycle"
 696 OOB_POWER_STATUS = "power-status"
 697 OOB_HEALTH = "health"
 698
 699 OOB_COMMANDS = frozenset([OOB_POWER_ON, OOB_POWER_OFF, OOB_POWER_CYCLE,
 700                           OOB_POWER_STATUS, OOB_HEALTH])
 701
 702 OOB_POWER_STATUS_POWERED = "powered"
 703
 704 OOB_TIMEOUT = 60 # 60 seconds
 705
 706 OOB_STATUS_OK = "OK"
 707 OOB_STATUS_WARNING = "WARNING"
 708 OOB_STATUS_CRITICAL = "CRITICAL"
 709 OOB_STATUS_UNKNOWN = "UNKNOWN"
 710
 711 OOB_STATUSES = frozenset([
 712   OOB_STATUS_OK,
 713   OOB_STATUS_WARNING,
 714   OOB_STATUS_CRITICAL,
 715   OOB_STATUS_UNKNOWN,
 716   ])
 717
 718 # Instance Parameters Profile
 719 PP_DEFAULT = "default"
 720
 721 # NIC_* constants are used inside the ganeti config
 722 NIC_MODE = "mode"
 723 NIC_LINK = "link"
 724
 725 NIC_MODE_BRIDGED = "bridged"
 726 NIC_MODE_ROUTED = "routed"
 727
 728 NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])
 729
 730 NICS_PARAMETER_TYPES = {
 731     NIC_MODE: VTYPE_STRING,
 732     NIC_LINK: VTYPE_STRING,
 733     }
 734
 735 NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
 736
 737 # IDISK_* constants are used in opcodes, to create/change disks
 738 IDISK_SIZE = "size"
 739 IDISK_MODE = "mode"
 740 IDISK_ADOPT = "adopt"
 741 IDISK_VG = "vg"
 742 IDISK_PARAMS_TYPES = {
 743   IDISK_SIZE: VTYPE_SIZE,
 744   IDISK_MODE: VTYPE_STRING,
 745   IDISK_ADOPT: VTYPE_STRING,
 746   IDISK_VG: VTYPE_STRING,
 747   }
 748 IDISK_PARAMS = frozenset(IDISK_PARAMS_TYPES.keys())
 749
 750 # INIC_* constants are used in opcodes, to create/change nics
 751 INIC_MAC = "mac"
 752 INIC_IP = "ip"
 753 INIC_MODE = "mode"
 754 INIC_LINK = "link"
 755 INIC_PARAMS_TYPES = {
 756   INIC_IP: VTYPE_MAYBE_STRING,
 757   INIC_LINK: VTYPE_STRING,
 758   INIC_MAC: VTYPE_STRING,
 759   INIC_MODE: VTYPE_STRING,
 760   }
 761 INIC_PARAMS = frozenset(INIC_PARAMS_TYPES.keys())
 762
 763 # Hypervisor constants
 764 HT_XEN_PVM = "xen-pvm"
 765 HT_FAKE = "fake"
 766 HT_XEN_HVM = "xen-hvm"
 767 HT_KVM = "kvm"
 768 HT_CHROOT = "chroot"
 769 HT_LXC = "lxc"
 770 HYPER_TYPES = frozenset([
 771   HT_XEN_PVM,
 772   HT_FAKE,
 773   HT_XEN_HVM,
 774   HT_KVM,
 775   HT_CHROOT,
 776   HT_LXC,
 777   ])
 778 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
 779
 780 VNC_BASE_PORT = 5900
 781 VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
 782 VNC_DEFAULT_BIND_ADDRESS = IP4_ADDRESS_ANY
 783
 784 # NIC types
 785 HT_NIC_RTL8139 = "rtl8139"
 786 HT_NIC_NE2K_PCI = "ne2k_pci"
 787 HT_NIC_NE2K_ISA = "ne2k_isa"
 788 HT_NIC_I82551 = "i82551"
 789 HT_NIC_I85557B = "i82557b"
 790 HT_NIC_I8259ER = "i82559er"
 791 HT_NIC_PCNET = "pcnet"
 792 HT_NIC_E1000 = "e1000"
 793 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
 794
 795 HT_HVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 796                                     HT_NIC_E1000, HT_NIC_NE2K_ISA,
 797                                     HT_NIC_PARAVIRTUAL])
 798 HT_KVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 799                                     HT_NIC_NE2K_ISA, HT_NIC_I82551,
 800                                     HT_NIC_I85557B, HT_NIC_I8259ER,
 801                                     HT_NIC_PCNET, HT_NIC_E1000,
 802                                     HT_NIC_PARAVIRTUAL])
 803 # Disk types
 804 HT_DISK_IOEMU = "ioemu"
 805 HT_DISK_IDE = "ide"
 806 HT_DISK_SCSI = "scsi"
 807 HT_DISK_SD = "sd"
 808 HT_DISK_MTD = "mtd"
 809 HT_DISK_PFLASH = "pflash"
 810
 811 HT_CACHE_DEFAULT = "default"
 812 HT_CACHE_NONE = "none"
 813 HT_CACHE_WTHROUGH = "writethrough"
 814 HT_CACHE_WBACK = "writeback"
 815 HT_VALID_CACHE_TYPES = frozenset([HT_CACHE_DEFAULT,
 816                                   HT_CACHE_NONE,
 817                                   HT_CACHE_WTHROUGH,
 818                                   HT_CACHE_WBACK])
 819
 820 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
 821 HT_KVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IDE,
 822                                      HT_DISK_SCSI, HT_DISK_SD, HT_DISK_MTD,
 823                                      HT_DISK_PFLASH])
 824
 825 # Mouse types:
 826 HT_MOUSE_MOUSE = "mouse"
 827 HT_MOUSE_TABLET = "tablet"
 828
 829 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
 830
 831 # Boot order
 832 HT_BO_CDROM = "cdrom"
 833 HT_BO_DISK = "disk"
 834 HT_BO_NETWORK = "network"
 835
 836 HT_KVM_VALID_BO_TYPES = frozenset([HT_BO_CDROM, HT_BO_DISK, HT_BO_NETWORK])
 837
 838 # Security models
 839 HT_SM_NONE = "none"
 840 HT_SM_USER = "user"
 841 HT_SM_POOL = "pool"
 842
 843 HT_KVM_VALID_SM_TYPES = frozenset([HT_SM_NONE, HT_SM_USER, HT_SM_POOL])
 844
 845 # Kvm flag values
 846 HT_KVM_ENABLED = "enabled"
 847 HT_KVM_DISABLED = "disabled"
 848
 849 HT_KVM_FLAG_VALUES = frozenset([HT_KVM_ENABLED, HT_KVM_DISABLED])
 850
 851 # Migration type
 852 HT_MIGRATION_LIVE = "live"
 853 HT_MIGRATION_NONLIVE = "non-live"
 854 HT_MIGRATION_MODES = frozenset([HT_MIGRATION_LIVE, HT_MIGRATION_NONLIVE])
 855
 856 # Cluster Verify steps
 857 VERIFY_NPLUSONE_MEM = 'nplusone_mem'
 858 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
 859
 860 # Node verify constants
 861 NV_DRBDHELPER = "drbd-helper"
 862 NV_DRBDLIST = "drbd-list"
 863 NV_FILELIST = "filelist"
 864 NV_HVINFO = "hvinfo"
 865 NV_HYPERVISOR = "hypervisor"
 866 NV_HVPARAMS = "hvparms"
 867 NV_INSTANCELIST = "instancelist"
 868 NV_LVLIST = "lvlist"
 869 NV_MASTERIP = "master-ip"
 870 NV_NODELIST = "nodelist"
 871 NV_NODENETTEST = "node-net-test"
 872 NV_NODESETUP = "nodesetup"
 873 NV_OSLIST = "oslist"
 874 NV_PVLIST = "pvlist"
 875 NV_TIME = "time"
 876 NV_VERSION = "version"
 877 NV_VGLIST = "vglist"
 878 NV_VMNODES = "vmnodes"
 879 NV_OOB_PATHS = "oob-paths"
 880
 881 # Instance status
 882 INSTST_RUNNING = "running"
 883 INSTST_ADMINDOWN = "ADMIN_down"
 884 INSTST_NODEOFFLINE = "ERROR_nodeoffline"
 885 INSTST_NODEDOWN = "ERROR_nodedown"
 886 INSTST_WRONGNODE = "ERROR_wrongnode"
 887 INSTST_ERRORUP = "ERROR_up"
 888 INSTST_ERRORDOWN = "ERROR_down"
 889 INSTST_ALL = frozenset([
 890   INSTST_RUNNING,
 891   INSTST_ADMINDOWN,
 892   INSTST_NODEOFFLINE,
 893   INSTST_NODEDOWN,
 894   INSTST_WRONGNODE,
 895   INSTST_ERRORUP,
 896   INSTST_ERRORDOWN,
 897   ])
 898
 899 # Node roles
 900 NR_REGULAR = "R"
 901 NR_MASTER = "M"
 902 NR_MCANDIDATE = "C"
 903 NR_DRAINED = "D"
 904 NR_OFFLINE = "O"
 905 NR_ALL = frozenset([
 906   NR_REGULAR,
 907   NR_MASTER,
 908   NR_MCANDIDATE,
 909   NR_DRAINED,
 910   NR_OFFLINE,
 911   ])
 912
 913 # SSL certificate check constants (in days)
 914 SSL_CERT_EXPIRATION_WARN = 30
 915 SSL_CERT_EXPIRATION_ERROR = 7
 916
 917 # Allocator framework constants
 918 IALLOCATOR_VERSION = 2
 919 IALLOCATOR_DIR_IN = "in"
 920 IALLOCATOR_DIR_OUT = "out"
 921 VALID_IALLOCATOR_DIRECTIONS = frozenset([
 922   IALLOCATOR_DIR_IN,
 923   IALLOCATOR_DIR_OUT,
 924   ])
 925 IALLOCATOR_MODE_ALLOC = "allocate"
 926 IALLOCATOR_MODE_RELOC = "relocate"
 927 IALLOCATOR_MODE_MEVAC = "multi-evacuate"
 928 VALID_IALLOCATOR_MODES = frozenset([
 929   IALLOCATOR_MODE_ALLOC,
 930   IALLOCATOR_MODE_RELOC,
 931   IALLOCATOR_MODE_MEVAC,
 932   ])
 933 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
 934
 935 # Job queue
 936 JOB_QUEUE_VERSION = 1
 937 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
 938 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
 939 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
 940 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
 941 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
 942 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
 943 JOB_QUEUE_DIRS = [QUEUE_DIR, JOB_QUEUE_ARCHIVE_DIR]
 944 JOB_QUEUE_DIRS_MODE = SECURE_DIR_MODE
 945
 946 JOB_ID_TEMPLATE = r"\d+"
 947
 948 # unchanged job return
 949 JOB_NOTCHANGED = "nochange"
 950
 951 # Job status
 952 JOB_STATUS_QUEUED = "queued"
 953 JOB_STATUS_WAITLOCK = "waiting"
 954 JOB_STATUS_CANCELING = "canceling"
 955 JOB_STATUS_RUNNING = "running"
 956 JOB_STATUS_CANCELED = "canceled"
 957 JOB_STATUS_SUCCESS = "success"
 958 JOB_STATUS_ERROR = "error"
 959 JOBS_FINALIZED = frozenset([
 960   JOB_STATUS_CANCELED,
 961   JOB_STATUS_SUCCESS,
 962   JOB_STATUS_ERROR,
 963   ])
 964 JOB_STATUS_ALL = frozenset([
 965   JOB_STATUS_QUEUED,
 966   JOB_STATUS_WAITLOCK,
 967   JOB_STATUS_CANCELING,
 968   JOB_STATUS_RUNNING,
 969   ]) | JOBS_FINALIZED
 970
 971 # OpCode status
 972 # not yet finalized
 973 OP_STATUS_QUEUED = "queued"
 974 OP_STATUS_WAITLOCK = "waiting"
 975 OP_STATUS_CANCELING = "canceling"
 976 OP_STATUS_RUNNING = "running"
 977 # finalized
 978 OP_STATUS_CANCELED = "canceled"
 979 OP_STATUS_SUCCESS = "success"
 980 OP_STATUS_ERROR = "error"
 981 OPS_FINALIZED = frozenset([OP_STATUS_CANCELED,
 982                            OP_STATUS_SUCCESS,
 983                            OP_STATUS_ERROR])
 984
 985 # OpCode priority
 986 OP_PRIO_LOWEST = +19
 987 OP_PRIO_HIGHEST = -20
 988
 989 OP_PRIO_LOW = +10
 990 OP_PRIO_NORMAL = 0
 991 OP_PRIO_HIGH = -10
 992
 993 OP_PRIO_SUBMIT_VALID = frozenset([
 994   OP_PRIO_LOW,
 995   OP_PRIO_NORMAL,
 996   OP_PRIO_HIGH,
 997   ])
 998
 999 OP_PRIO_DEFAULT = OP_PRIO_NORMAL
1000
1001 # Execution log types
1002 ELOG_MESSAGE = "message"
1003 ELOG_PROGRESS = "progress"
1004 ELOG_REMOTE_IMPORT = "remote-import"
1005 ELOG_JQUEUE_TEST = "jqueue-test"
1006
1007 # /etc/hosts modification
1008 ETC_HOSTS_ADD = "add"
1009 ETC_HOSTS_REMOVE = "remove"
1010
1011 # Job queue test
1012 JQT_MSGPREFIX = "TESTMSG="
1013 JQT_EXPANDNAMES = "expandnames"
1014 JQT_EXEC = "exec"
1015 JQT_LOGMSG = "logmsg"
1016 JQT_STARTMSG = "startmsg"
1017 JQT_ALL = frozenset([
1018   JQT_EXPANDNAMES,
1019   JQT_EXEC,
1020   JQT_LOGMSG,
1021   JQT_STARTMSG,
1022   ])
1023
1024 # Query resources
1025 QR_INSTANCE = "instance"
1026 QR_NODE = "node"
1027 QR_LOCK = "lock"
1028 QR_GROUP = "group"
1029
1030 #: List of resources which can be queried using L{opcodes.OpQuery}
1031 QR_OP_QUERY = frozenset([QR_INSTANCE, QR_NODE, QR_GROUP])
1032
1033 #: List of resources which can be queried using Local UniX Interface
1034 QR_OP_LUXI = QR_OP_QUERY.union([
1035   QR_LOCK,
1036   ])
1037
1038 # Query field types
1039 QFT_UNKNOWN = "unknown"
1040 QFT_TEXT = "text"
1041 QFT_BOOL = "bool"
1042 QFT_NUMBER = "number"
1043 QFT_UNIT = "unit"
1044 QFT_TIMESTAMP = "timestamp"
1045 QFT_OTHER = "other"
1046
1047 #: All query field types
1048 QFT_ALL = frozenset([
1049   QFT_UNKNOWN,
1050   QFT_TEXT,
1051   QFT_BOOL,
1052   QFT_NUMBER,
1053   QFT_UNIT,
1054   QFT_TIMESTAMP,
1055   QFT_OTHER,
1056   ])
1057
1058 # Query result field status (don't change or reuse values as they're used by
1059 # clients)
1060 #: Normal field status
1061 RS_NORMAL = 0
1062 #: Unknown field
1063 RS_UNKNOWN = 1
1064 #: No data (e.g. RPC error), can be used instead of L{RS_OFFLINE}
1065 RS_NODATA = 2
1066 #: Value unavailable/unsupported for item; if this field is supported
1067 #: but we cannot get the data for the moment, RS_NODATA or
1068 #: RS_OFFLINE should be used
1069 RS_UNAVAIL = 3
1070 #: Resource marked offline
1071 RS_OFFLINE = 4
1072
1073 RS_ALL = frozenset([
1074   RS_NORMAL,
1075   RS_UNKNOWN,
1076   RS_NODATA,
1077   RS_UNAVAIL,
1078   RS_OFFLINE,
1079   ])
1080
1081 #: Dictionary with special field cases and their verbose/terse formatting
1082 RSS_DESCRIPTION = {
1083   RS_UNKNOWN: ("(unknown)", "??"),
1084   RS_NODATA:  ("(nodata)",  "?"),
1085   RS_OFFLINE: ("(offline)", "*"),
1086   RS_UNAVAIL: ("(unavail)", "-"),
1087   }
1088
1089 # max dynamic devices
1090 MAX_NICS = 8
1091 MAX_DISKS = 16
1092
1093 # SSCONF keys
1094 SS_CLUSTER_NAME = "cluster_name"
1095 SS_CLUSTER_TAGS = "cluster_tags"
1096 SS_FILE_STORAGE_DIR = "file_storage_dir"
1097 SS_SHARED_FILE_STORAGE_DIR = "shared_file_storage_dir"
1098 SS_MASTER_CANDIDATES = "master_candidates"
1099 SS_MASTER_CANDIDATES_IPS = "master_candidates_ips"
1100 SS_MASTER_IP = "master_ip"
1101 SS_MASTER_NETDEV = "master_netdev"
1102 SS_MASTER_NODE = "master_node"
1103 SS_NODE_LIST = "node_list"
1104 SS_NODE_PRIMARY_IPS = "node_primary_ips"
1105 SS_NODE_SECONDARY_IPS = "node_secondary_ips"
1106 SS_OFFLINE_NODES = "offline_nodes"
1107 SS_ONLINE_NODES = "online_nodes"
1108 SS_PRIMARY_IP_FAMILY = "primary_ip_family"
1109 SS_INSTANCE_LIST = "instance_list"
1110 SS_RELEASE_VERSION = "release_version"
1111 SS_HYPERVISOR_LIST = "hypervisor_list"
1112 SS_MAINTAIN_NODE_HEALTH = "maintain_node_health"
1113 SS_UID_POOL = "uid_pool"
1114 SS_NODEGROUPS = "nodegroups"
1115
1116 # cluster wide default parameters
1117 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
1118
1119 HVC_DEFAULTS = {
1120   HT_XEN_PVM: {
1121     HV_USE_BOOTLOADER: False,
1122     HV_BOOTLOADER_PATH: XEN_BOOTLOADER,
1123     HV_BOOTLOADER_ARGS: '',
1124     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU",
1125     HV_INITRD_PATH: '',
1126     HV_ROOT_PATH: '/dev/sda1',
1127     HV_KERNEL_ARGS: 'ro',
1128     HV_MIGRATION_PORT: 8002,
1129     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1130     HV_BLOCKDEV_PREFIX: "sd",
1131     },
1132   HT_XEN_HVM: {
1133     HV_BOOT_ORDER: "cd",
1134     HV_CDROM_IMAGE_PATH: '',
1135     HV_NIC_TYPE: HT_NIC_RTL8139,
1136     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1137     HV_VNC_BIND_ADDRESS: IP4_ADDRESS_ANY,
1138     HV_VNC_PASSWORD_FILE: VNC_PASSWORD_FILE,
1139     HV_ACPI: True,
1140     HV_PAE: True,
1141     HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
1142     HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
1143     HV_MIGRATION_PORT: 8002,
1144     HV_MIGRATION_MODE: HT_MIGRATION_NONLIVE,
1145     HV_USE_LOCALTIME: False,
1146     HV_BLOCKDEV_PREFIX: "hd",
1147     },
1148   HT_KVM: {
1149     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU",
1150     HV_INITRD_PATH: '',
1151     HV_KERNEL_ARGS: 'ro',
1152     HV_ROOT_PATH: '/dev/vda1',
1153     HV_ACPI: True,
1154     HV_SERIAL_CONSOLE: True,
1155     HV_VNC_BIND_ADDRESS: '',
1156     HV_VNC_TLS: False,
1157     HV_VNC_X509: '',
1158     HV_VNC_X509_VERIFY: False,
1159     HV_VNC_PASSWORD_FILE: '',
1160     HV_CDROM_IMAGE_PATH: '',
1161     HV_BOOT_ORDER: HT_BO_DISK,
1162     HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
1163     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
1164     HV_USB_MOUSE: '',
1165     HV_MIGRATION_PORT: 8102,
1166     HV_MIGRATION_BANDWIDTH: 32, # MiB/s
1167     HV_MIGRATION_DOWNTIME: 30,  # ms
1168     HV_MIGRATION_MODE: HT_MIGRATION_LIVE,
1169     HV_USE_LOCALTIME: False,
1170     HV_DISK_CACHE: HT_CACHE_DEFAULT,
1171     HV_SECURITY_MODEL: HT_SM_NONE,
1172     HV_SECURITY_DOMAIN: '',
1173     HV_KVM_FLAG: "",
1174     HV_VHOST_NET: False,
1175     HV_KVM_USE_CHROOT: False,
1176     HV_MEM_PATH: "",
1177     },
1178   HT_FAKE: {
1179     },
1180   HT_CHROOT: {
1181     HV_INIT_SCRIPT: "/ganeti-chroot",
1182     },
1183   HT_LXC: {
1184     HV_CPU_MASK: "",
1185     },
1186   }
1187
1188 HVC_GLOBALS = frozenset([
1189   HV_MIGRATION_PORT,
1190   HV_MIGRATION_BANDWIDTH,
1191   HV_MIGRATION_MODE,
1192   ])
1193
1194 BEC_DEFAULTS = {
1195   BE_MEMORY: 128,
1196   BE_VCPUS: 1,
1197   BE_AUTO_BALANCE: True,
1198   }
1199
1200 NDC_DEFAULTS = {
1201   ND_OOB_PROGRAM: None,
1202   }
1203
1204 NICC_DEFAULTS = {
1205   NIC_MODE: NIC_MODE_BRIDGED,
1206   NIC_LINK: DEFAULT_BRIDGE,
1207   }
1208
1209 MASTER_POOL_SIZE_DEFAULT = 10
1210
1211 CONFD_PROTOCOL_VERSION = 1
1212
1213 CONFD_REQ_PING = 0
1214 CONFD_REQ_NODE_ROLE_BYNAME = 1
1215 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP = 2
1216 CONFD_REQ_CLUSTER_MASTER = 3
1217 CONFD_REQ_NODE_PIP_LIST = 4
1218 CONFD_REQ_MC_PIP_LIST = 5
1219 CONFD_REQ_INSTANCES_IPS_LIST = 6
1220
1221 # Confd request query fields. These are used to narrow down queries.
1222 # These must be strings rather than integers, because json-encoding
1223 # converts them to strings anyway, as they're used as dict-keys.
1224 CONFD_REQQ_LINK = "0"
1225 CONFD_REQQ_IP = "1"
1226 CONFD_REQQ_IPLIST = "2"
1227 CONFD_REQQ_FIELDS = "3"
1228
1229 CONFD_REQFIELD_NAME = "0"
1230 CONFD_REQFIELD_IP = "1"
1231 CONFD_REQFIELD_MNODE_PIP = "2"
1232
1233 CONFD_REQS = frozenset([
1234   CONFD_REQ_PING,
1235   CONFD_REQ_NODE_ROLE_BYNAME,
1236   CONFD_REQ_NODE_PIP_BY_INSTANCE_IP,
1237   CONFD_REQ_CLUSTER_MASTER,
1238   CONFD_REQ_NODE_PIP_LIST,
1239   CONFD_REQ_MC_PIP_LIST,
1240   CONFD_REQ_INSTANCES_IPS_LIST,
1241   ])
1242
1243 CONFD_REPL_STATUS_OK = 0
1244 CONFD_REPL_STATUS_ERROR = 1
1245 CONFD_REPL_STATUS_NOTIMPLEMENTED = 2
1246
1247 CONFD_REPL_STATUSES = frozenset([
1248   CONFD_REPL_STATUS_OK,
1249   CONFD_REPL_STATUS_ERROR,
1250   CONFD_REPL_STATUS_NOTIMPLEMENTED,
1251   ])
1252
1253 (CONFD_NODE_ROLE_MASTER,
1254  CONFD_NODE_ROLE_CANDIDATE,
1255  CONFD_NODE_ROLE_OFFLINE,
1256  CONFD_NODE_ROLE_DRAINED,
1257  CONFD_NODE_ROLE_REGULAR,
1258  ) = range(5)
1259
1260 # A few common errors for confd
1261 CONFD_ERROR_UNKNOWN_ENTRY = 1
1262 CONFD_ERROR_INTERNAL = 2
1263 CONFD_ERROR_ARGUMENT = 3
1264
1265 # Each request is "salted" by the current timestamp.
1266 # This constants decides how many seconds of skew to accept.
1267 # TODO: make this a default and allow the value to be more configurable
1268 CONFD_MAX_CLOCK_SKEW = 2 * NODE_MAX_CLOCK_SKEW
1269
1270 # When we haven't reloaded the config for more than this amount of seconds, we
1271 # force a test to see if inotify is betraying us.
1272 CONFD_CONFIG_RELOAD_TIMEOUT = 60
1273
1274 # If we receive more than one update in this amount of seconds, we move to
1275 # polling every RATELIMIT seconds, rather than relying on inotify, to be able
1276 # to serve more requests.
1277 CONFD_CONFIG_RELOAD_RATELIMIT = 2
1278
1279 # Magic number prepended to all confd queries.
1280 # This allows us to distinguish different types of confd protocols and handle
1281 # them. For example by changing this we can move the whole payload to be
1282 # compressed, or move away from json.
1283 CONFD_MAGIC_FOURCC = 'plj0'
1284
1285 # By default a confd request is sent to the minimum between this number and all
1286 # MCs. 6 was chosen because even in the case of a disastrous 50% response rate,
1287 # we should have enough answers to be able to compare more than one.
1288 CONFD_DEFAULT_REQ_COVERAGE = 6
1289
1290 # Timeout in seconds to expire pending query request in the confd client
1291 # library. We don't actually expect any answer more than 10 seconds after we
1292 # sent a request.
1293 CONFD_CLIENT_EXPIRE_TIMEOUT = 10
1294
1295 # Maximum UDP datagram size.
1296 # On IPv4: 64K - 20 (ip header size) - 8 (udp header size) = 65507
1297 # On IPv6: 64K - 40 (ip6 header size) - 8 (udp header size) = 65487
1298 #   (assuming we can't use jumbo frames)
1299 # We just set this to 60K, which should be enough
1300 MAX_UDP_DATA_SIZE = 61440
1301
1302 # User-id pool minimum/maximum acceptable user-ids.
1303 UIDPOOL_UID_MIN = 0
1304 UIDPOOL_UID_MAX = 2**32-1 # Assuming 32 bit user-ids
1305
1306 # Name or path of the pgrep command
1307 PGREP = "pgrep"
1308
1309 # Name of the node group that gets created at cluster init or upgrade
1310 INITIAL_NODE_GROUP_NAME = "default"
1311
1312 # Possible values for NodeGroup.alloc_policy
1313 ALLOC_POLICY_PREFERRED = "preferred"
1314 ALLOC_POLICY_LAST_RESORT = "last_resort"
1315 ALLOC_POLICY_UNALLOCABLE = "unallocable"
1316 VALID_ALLOC_POLICIES = [
1317   ALLOC_POLICY_PREFERRED,
1318   ALLOC_POLICY_LAST_RESORT,
1319   ALLOC_POLICY_UNALLOCABLE,
1320   ]
1321
1322 # Temporary external/shared storage parameters
1323 BLOCKDEV_DRIVER_MANUAL = "manual"