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

   1 #
   2 #
   3
   4 # Copyright (C) 2006, 2007 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 PROTOCOL_VERSION = 30
  30 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
  31 OS_API_V10 = 10
  32 OS_API_V15 = 15
  33 OS_API_VERSIONS = frozenset([OS_API_V10, OS_API_V15])
  34 EXPORT_VERSION = 0
  35 RAPI_VERSION = 2
  36
  37
  38 # Format for CONFIG_VERSION:
  39 #   01 03 0123 = 01030123
  40 #   ^^ ^^ ^^^^
  41 #   |  |  + Configuration version/revision
  42 #   |  + Minor version
  43 #   + Major version
  44 #
  45 # It stored as an integer. Make sure not to write an octal number.
  46
  47 # BuildVersion and SplitVersion must be in here because we can't import other
  48 # modules. The cfgupgrade tool must be able to read and write version numbers
  49 # and thus requires these functions. To avoid code duplication, they're kept in
  50 # here.
  51
  52 def BuildVersion(major, minor, revision):
  53   """Calculates int version number from major, minor and revision numbers.
  54
  55   Returns: int representing version number
  56
  57   """
  58   assert isinstance(major, int)
  59   assert isinstance(minor, int)
  60   assert isinstance(revision, int)
  61   return (1000000 * major +
  62             10000 * minor +
  63                 1 * revision)
  64
  65
  66 def SplitVersion(version):
  67   """Splits version number stored in an int.
  68
  69   Returns: tuple; (major, minor, revision)
  70
  71   """
  72   assert isinstance(version, int)
  73
  74   (major, remainder) = divmod(version, 1000000)
  75   (minor, revision) = divmod(remainder, 10000)
  76
  77   return (major, minor, revision)
  78
  79
  80 CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
  81 CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
  82 CONFIG_REVISION = 0
  83 CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
  84
  85 # file paths
  86 DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti"
  87 RUN_DIR = _autoconf.LOCALSTATEDIR + "/run"
  88 RUN_GANETI_DIR = RUN_DIR + "/ganeti"
  89 BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache"
  90 DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks"
  91 RUN_DIRS_MODE = 0755
  92 SOCKET_DIR = RUN_GANETI_DIR + "/socket"
  93 SOCKET_DIR_MODE = 0700
  94 # keep RUN_GANETI_DIR first here, to make sure all get created when the node
  95 # daemon is started (this takes care of RUN_DIR being tmpfs)
  96 SUB_RUN_DIRS = [ RUN_GANETI_DIR, BDEV_CACHE_DIR, DISK_LINKS_DIR ]
  97 LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock"
  98 SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock"
  99 CLUSTER_CONF_FILE = DATA_DIR + "/config.data"
 100 SSL_CERT_FILE = DATA_DIR + "/server.pem"
 101 RAPI_CERT_FILE = DATA_DIR + "/rapi.pem"
 102 HMAC_CLUSTER_KEY = DATA_DIR + "/hmac.key"
 103 WATCHER_STATEFILE = DATA_DIR + "/watcher.data"
 104 WATCHER_PAUSEFILE = DATA_DIR + "/watcher.pause"
 105 INSTANCE_UPFILE = RUN_GANETI_DIR + "/instance-status"
 106 SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts"
 107 RAPI_USERS_FILE = DATA_DIR + "/rapi_users"
 108 QUEUE_DIR = DATA_DIR + "/queue"
 109 DAEMON_UTIL = _autoconf.PKGLIBDIR + "/daemon-util"
 110 ETC_HOSTS = "/etc/hosts"
 111 DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
 112 ENABLE_FILE_STORAGE = _autoconf.ENABLE_FILE_STORAGE
 113 SYSCONFDIR = _autoconf.SYSCONFDIR
 114 TOOLSDIR = _autoconf.TOOLSDIR
 115 CONF_DIR = SYSCONFDIR + "/ganeti"
 116
 117 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
 118
 119 NODED = "ganeti-noded"
 120 CONFD = "ganeti-confd"
 121 RAPI = "ganeti-rapi"
 122 MASTERD = "ganeti-masterd"
 123 # used in the ganeti-nbma project
 124 NLD = "ganeti-nld"
 125
 126 MULTITHREADED_DAEMONS = frozenset([MASTERD])
 127
 128 DAEMONS_SSL = {
 129   # daemon-name: (default-cert-path, default-key-path)
 130   NODED: (SSL_CERT_FILE, SSL_CERT_FILE),
 131   RAPI: (RAPI_CERT_FILE, RAPI_CERT_FILE),
 132 }
 133
 134 DAEMONS_PORTS = {
 135   # daemon-name: ("proto", "default-port")
 136   NODED: ("tcp", 1811),
 137   CONFD: ("udp", 1814),
 138   RAPI: ("tcp", 5080),
 139   # used in the ganeti-nbma project
 140   NLD: ("udp", 1816),
 141 }
 142 DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
 143 DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
 144 DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
 145 # used in the ganeti-nbma project
 146 DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
 147
 148 FIRST_DRBD_PORT = 11000
 149 LAST_DRBD_PORT = 14999
 150 MASTER_SCRIPT = "ganeti-master"
 151
 152 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
 153 DAEMONS_LOGFILES = {
 154   # "daemon-name": "logfile"
 155   NODED: LOG_DIR + "node-daemon.log",
 156   CONFD: LOG_DIR + "conf-daemon.log",
 157   RAPI: LOG_DIR + "rapi-daemon.log",
 158   MASTERD: LOG_DIR + "master-daemon.log",
 159   # used in the ganeti-nbma project
 160   NLD: LOG_DIR + "nl-daemon.log",
 161   }
 162 LOG_OS_DIR = LOG_DIR + "os"
 163 LOG_WATCHER = LOG_DIR + "watcher.log"
 164 LOG_COMMANDS = LOG_DIR + "commands.log"
 165 LOG_BURNIN = LOG_DIR + "burnin.log"
 166
 167 # one of 'no', 'yes', 'only'
 168 SYSLOG_USAGE = _autoconf.SYSLOG_USAGE
 169 SYSLOG_NO = "no"
 170 SYSLOG_YES = "yes"
 171 SYSLOG_ONLY = "only"
 172 SYSLOG_SOCKET = "/dev/log"
 173
 174 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
 175 EXPORT_DIR = _autoconf.EXPORT_DIR
 176
 177 EXPORT_CONF_FILE = "config.ini"
 178
 179 XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
 180 XEN_KERNEL = _autoconf.XEN_KERNEL
 181 XEN_INITRD = _autoconf.XEN_INITRD
 182
 183 KVM_PATH = _autoconf.KVM_PATH
 184 SOCAT_PATH = _autoconf.SOCAT_PATH
 185 SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
 186 SOCAT_ESCAPE_CODE = "0x1d"
 187
 188 VALUE_DEFAULT = "default"
 189 VALUE_AUTO = "auto"
 190 VALUE_GENERATE = "generate"
 191 VALUE_NONE = "none"
 192 VALUE_TRUE = "true"
 193 VALUE_FALSE = "false"
 194
 195 # External script validation mask
 196 EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")
 197
 198 # hooks-related constants
 199 HOOKS_BASE_DIR = CONF_DIR + "/hooks"
 200 HOOKS_PHASE_PRE = "pre"
 201 HOOKS_PHASE_POST = "post"
 202 HOOKS_NAME_CFGUPDATE = "config-update"
 203 HOOKS_NAME_WATCHER = "watcher"
 204 HOOKS_VERSION = 2
 205
 206 # hooks subject type (what object type does the LU deal with)
 207 HTYPE_CLUSTER = "CLUSTER"
 208 HTYPE_NODE = "NODE"
 209 HTYPE_INSTANCE = "INSTANCE"
 210
 211 HKR_SKIP = 0
 212 HKR_FAIL = 1
 213 HKR_SUCCESS = 2
 214
 215 # Storage types
 216 ST_FILE = "file"
 217 ST_LVM_PV = "lvm-pv"
 218 ST_LVM_VG = "lvm-vg"
 219
 220 # Storage fields
 221 # first two are valid in LU context only, not passed to backend
 222 SF_NODE = "node"
 223 SF_TYPE = "type"
 224 # and the rest are valid in backend
 225 SF_NAME = "name"
 226 SF_SIZE = "size"
 227 SF_FREE = "free"
 228 SF_USED = "used"
 229 SF_ALLOCATABLE = "allocatable"
 230
 231 # Storage operations
 232 SO_FIX_CONSISTENCY = "fix-consistency"
 233
 234 # Available fields per storage type
 235 VALID_STORAGE_FIELDS = frozenset([SF_NAME, SF_TYPE, SF_SIZE,
 236                                   SF_USED, SF_FREE, SF_ALLOCATABLE])
 237
 238 VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
 239
 240 MODIFIABLE_STORAGE_FIELDS = {
 241   ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
 242   }
 243
 244 VALID_STORAGE_OPERATIONS = {
 245   ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
 246   }
 247
 248 # Local disk status
 249 # Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
 250 (LDS_OKAY,
 251  LDS_UNKNOWN,
 252  LDS_FAULTY) = range(1, 4)
 253
 254 # disk template types
 255 DT_DISKLESS = "diskless"
 256 DT_PLAIN = "plain"
 257 DT_DRBD8 = "drbd"
 258 DT_FILE = "file"
 259
 260 # the set of network-mirrored disk templates
 261 DTS_NET_MIRROR = frozenset([DT_DRBD8])
 262
 263 # the set of non-lvm-based disk templates
 264 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE])
 265
 266 # logical disk types
 267 LD_LV = "lvm"
 268 LD_DRBD8 = "drbd8"
 269 LD_FILE = "file"
 270 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8])
 271
 272 # drbd constants
 273 DRBD_HMAC_ALG = "md5"
 274 DRBD_NET_PROTOCOL = "C"
 275 DRBD_BARRIERS = _autoconf.DRBD_BARRIERS
 276
 277 # file backend driver
 278 FD_LOOP = "loop"
 279 FD_BLKTAP = "blktap"
 280
 281 # the set of drbd-like disk types
 282 LDS_DRBD = frozenset([LD_DRBD8])
 283
 284 # disk access mode
 285 DISK_RDONLY = "ro"
 286 DISK_RDWR = "rw"
 287 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
 288
 289 # disk replacement mode
 290 REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
 291 REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
 292 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
 293 REPLACE_DISK_AUTO = "replace_auto"
 294
 295 # lock recalculate mode
 296 LOCKS_REPLACE = 'replace'
 297 LOCKS_APPEND = 'append'
 298
 299 # instance creation modes
 300 INSTANCE_CREATE = "create"
 301 INSTANCE_IMPORT = "import"
 302
 303 DISK_TEMPLATES = frozenset([DT_DISKLESS, DT_PLAIN,
 304                             DT_DRBD8, DT_FILE])
 305
 306 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
 307
 308 # import/export config options
 309 INISECT_EXP = "export"
 310 INISECT_INS = "instance"
 311
 312 # dynamic device modification
 313
 314 DDM_ADD = 'add'
 315 DDM_REMOVE = 'remove'
 316
 317 # common exit codes
 318 EXIT_SUCCESS = 0
 319 EXIT_FAILURE = 1
 320 EXIT_NOTCLUSTER = 5
 321 EXIT_NOTMASTER = 11
 322 EXIT_NODESETUP_ERROR = 12
 323 EXIT_CONFIRMATION = 13 # need user confirmation
 324 EXIT_NOTCANDIDATE = 14
 325
 326 # tags
 327 TAG_CLUSTER = "cluster"
 328 TAG_NODE = "node"
 329 TAG_INSTANCE = "instance"
 330 MAX_TAG_LEN = 128
 331 MAX_TAGS_PER_OBJ = 4096
 332
 333 # others
 334 DEFAULT_BRIDGE = "xen-br0"
 335 SYNC_SPEED = 60 * 1024
 336 LOCALHOST_IP_ADDRESS = "127.0.0.1"
 337 TCP_PING_TIMEOUT = 10
 338 GANETI_RUNAS = "root"
 339 DEFAULT_VG = "xenvg"
 340 BIND_ADDRESS_GLOBAL = "0.0.0.0"
 341 MIN_VG_SIZE = 20480
 342 DEFAULT_MAC_PREFIX = "aa:00:00"
 343 LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT
 344 # default maximum instance wait time, in seconds.
 345 DEFAULT_SHUTDOWN_TIMEOUT = 120
 346 NODE_MAX_CLOCK_SKEW = 150
 347
 348 # runparts results
 349 (RUNPARTS_SKIP,
 350  RUNPARTS_RUN,
 351  RUNPARTS_ERR) = range(3)
 352
 353 RUNPARTS_STATUS = frozenset([RUNPARTS_SKIP, RUNPARTS_RUN, RUNPARTS_ERR])
 354
 355 # RPC constants
 356 (RPC_ENCODING_NONE,
 357  RPC_ENCODING_ZLIB_BASE64) = range(2)
 358
 359 # os related constants
 360 OS_SCRIPT_CREATE = 'create'
 361 OS_SCRIPT_IMPORT = 'import'
 362 OS_SCRIPT_EXPORT = 'export'
 363 OS_SCRIPT_RENAME = 'rename'
 364 OS_SCRIPTS = frozenset([OS_SCRIPT_CREATE, OS_SCRIPT_IMPORT,
 365                         OS_SCRIPT_EXPORT, OS_SCRIPT_RENAME])
 366
 367 OS_API_FILE = 'ganeti_api_version'
 368 OS_VARIANTS_FILE = 'variants.list'
 369
 370 # ssh constants
 371 SSH_CONFIG_DIR = _autoconf.SSH_CONFIG_DIR
 372 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_dsa_key"
 373 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
 374 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_rsa_key"
 375 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
 376 SSH = "ssh"
 377 SCP = "scp"
 378
 379 # reboot types
 380 INSTANCE_REBOOT_SOFT = "soft"
 381 INSTANCE_REBOOT_HARD = "hard"
 382 INSTANCE_REBOOT_FULL = "full"
 383
 384 REBOOT_TYPES = frozenset([INSTANCE_REBOOT_SOFT,
 385                           INSTANCE_REBOOT_HARD,
 386                           INSTANCE_REBOOT_FULL])
 387
 388 VTYPE_STRING = 'string'
 389 VTYPE_BOOL = 'bool'
 390 VTYPE_SIZE = 'size' # size, in MiBs
 391 VTYPE_INT = 'int'
 392 ENFORCEABLE_TYPES = frozenset([
 393                       VTYPE_STRING,
 394                       VTYPE_BOOL,
 395                       VTYPE_SIZE,
 396                       VTYPE_INT,
 397                       ])
 398
 399 # HV parameter names (global namespace)
 400 HV_BOOT_ORDER = "boot_order"
 401 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
 402 HV_NIC_TYPE = "nic_type"
 403 HV_DISK_TYPE = "disk_type"
 404 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
 405 HV_VNC_PASSWORD_FILE = "vnc_password_file"
 406 HV_VNC_TLS = "vnc_tls"
 407 HV_VNC_X509 = "vnc_x509_path"
 408 HV_VNC_X509_VERIFY = "vnc_x509_verify"
 409 HV_ACPI = "acpi"
 410 HV_PAE = "pae"
 411 HV_USE_BOOTLOADER = "use_bootloader"
 412 HV_BOOTLOADER_ARGS = "bootloader_args"
 413 HV_BOOTLOADER_PATH = "bootloader_path"
 414 HV_KERNEL_ARGS = "kernel_args"
 415 HV_KERNEL_PATH = "kernel_path"
 416 HV_INITRD_PATH = "initrd_path"
 417 HV_ROOT_PATH = "root_path"
 418 HV_SERIAL_CONSOLE = "serial_console"
 419 HV_USB_MOUSE = "usb_mouse"
 420 HV_DEVICE_MODEL = "device_model"
 421 HV_INIT_SCRIPT = "init_script"
 422 HV_MIGRATION_PORT = "migration_port"
 423 HV_USE_LOCALTIME = "use_localtime"
 424 HV_DISK_CACHE = "disk_cache"
 425
 426 HVS_PARAMETER_TYPES = {
 427   HV_BOOT_ORDER: VTYPE_STRING,
 428   HV_CDROM_IMAGE_PATH: VTYPE_STRING,
 429   HV_NIC_TYPE: VTYPE_STRING,
 430   HV_DISK_TYPE: VTYPE_STRING,
 431   HV_VNC_PASSWORD_FILE: VTYPE_STRING,
 432   HV_VNC_BIND_ADDRESS: VTYPE_STRING,
 433   HV_VNC_TLS: VTYPE_BOOL,
 434   HV_VNC_X509: VTYPE_STRING,
 435   HV_VNC_X509_VERIFY: VTYPE_BOOL,
 436   HV_ACPI: VTYPE_BOOL,
 437   HV_PAE: VTYPE_BOOL,
 438   HV_USE_BOOTLOADER: VTYPE_BOOL,
 439   HV_BOOTLOADER_PATH: VTYPE_STRING,
 440   HV_BOOTLOADER_ARGS: VTYPE_STRING,
 441   HV_KERNEL_PATH: VTYPE_STRING,
 442   HV_KERNEL_ARGS: VTYPE_STRING,
 443   HV_INITRD_PATH: VTYPE_STRING,
 444   HV_ROOT_PATH: VTYPE_STRING,
 445   HV_SERIAL_CONSOLE: VTYPE_BOOL,
 446   HV_USB_MOUSE: VTYPE_STRING,
 447   HV_DEVICE_MODEL: VTYPE_STRING,
 448   HV_INIT_SCRIPT: VTYPE_STRING,
 449   HV_MIGRATION_PORT: VTYPE_INT,
 450   HV_USE_LOCALTIME: VTYPE_BOOL,
 451   HV_DISK_CACHE: VTYPE_STRING,
 452   }
 453
 454 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
 455
 456 # BE parameter names
 457 BE_MEMORY = "memory"
 458 BE_VCPUS = "vcpus"
 459 BE_AUTO_BALANCE = "auto_balance"
 460
 461 BES_PARAMETER_TYPES = {
 462     BE_MEMORY: VTYPE_SIZE,
 463     BE_VCPUS: VTYPE_INT,
 464     BE_AUTO_BALANCE: VTYPE_BOOL,
 465     }
 466
 467 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 468
 469 # Instance Parameters Profile
 470 PP_DEFAULT = "default"
 471
 472 NIC_MODE = "mode"
 473 NIC_LINK = "link"
 474
 475 NIC_MODE_BRIDGED = "bridged"
 476 NIC_MODE_ROUTED = "routed"
 477
 478 NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])
 479
 480 NICS_PARAMETER_TYPES = {
 481     NIC_MODE: VTYPE_STRING,
 482     NIC_LINK: VTYPE_STRING,
 483     }
 484
 485 NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
 486
 487 # Hypervisor constants
 488 HT_XEN_PVM = "xen-pvm"
 489 HT_FAKE = "fake"
 490 HT_XEN_HVM = "xen-hvm"
 491 HT_KVM = "kvm"
 492 HT_CHROOT = "chroot"
 493 HYPER_TYPES = frozenset([HT_XEN_PVM, HT_FAKE, HT_XEN_HVM, HT_KVM, HT_CHROOT])
 494 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
 495
 496 VNC_BASE_PORT = 5900
 497 VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
 498 VNC_DEFAULT_BIND_ADDRESS = '0.0.0.0'
 499
 500 # NIC types
 501 HT_NIC_RTL8139 = "rtl8139"
 502 HT_NIC_NE2K_PCI = "ne2k_pci"
 503 HT_NIC_NE2K_ISA = "ne2k_isa"
 504 HT_NIC_I82551 = "i82551"
 505 HT_NIC_I85557B = "i82557b"
 506 HT_NIC_I8259ER = "i82559er"
 507 HT_NIC_PCNET = "pcnet"
 508 HT_NIC_E1000 = "e1000"
 509 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
 510
 511 HT_HVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 512                                     HT_NIC_NE2K_ISA, HT_NIC_PARAVIRTUAL])
 513 HT_KVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
 514                                     HT_NIC_NE2K_ISA, HT_NIC_I82551,
 515                                     HT_NIC_I85557B, HT_NIC_I8259ER,
 516                                     HT_NIC_PCNET, HT_NIC_E1000,
 517                                     HT_NIC_PARAVIRTUAL])
 518 # Disk types
 519 HT_DISK_IOEMU = "ioemu"
 520 HT_DISK_IDE = "ide"
 521 HT_DISK_SCSI = "scsi"
 522 HT_DISK_SD = "sd"
 523 HT_DISK_MTD = "mtd"
 524 HT_DISK_PFLASH = "pflash"
 525
 526 HT_CACHE_DEFAULT = "default"
 527 HT_CACHE_NONE = "none"
 528 HT_CACHE_WTHROUGH = "writethrough"
 529 HT_CACHE_WBACK = "writeback"
 530 HT_VALID_CACHE_TYPES = frozenset([HT_CACHE_DEFAULT,
 531                                   HT_CACHE_NONE,
 532                                   HT_CACHE_WTHROUGH,
 533                                   HT_CACHE_WBACK])
 534
 535 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
 536 HT_KVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IDE,
 537                                      HT_DISK_SCSI, HT_DISK_SD, HT_DISK_MTD,
 538                                      HT_DISK_PFLASH])
 539
 540 # Mouse types:
 541 HT_MOUSE_MOUSE = "mouse"
 542 HT_MOUSE_TABLET = "tablet"
 543
 544 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
 545
 546 # Boot order
 547 HT_BO_CDROM = "cdrom"
 548 HT_BO_DISK = "disk"
 549 HT_BO_NETWORK = "network"
 550
 551 HT_KVM_VALID_BO_TYPES = frozenset([HT_BO_CDROM, HT_BO_DISK, HT_BO_NETWORK])
 552
 553 # Cluster Verify steps
 554 VERIFY_NPLUSONE_MEM = 'nplusone_mem'
 555 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
 556
 557 # Node verify constants
 558 NV_FILELIST = "filelist"
 559 NV_HVINFO = "hvinfo"
 560 NV_HYPERVISOR = "hypervisor"
 561 NV_INSTANCELIST = "instancelist"
 562 NV_NODELIST = "nodelist"
 563 NV_NODENETTEST = "node-net-test"
 564 NV_VERSION = "version"
 565 NV_VGLIST = "vglist"
 566 NV_LVLIST = "lvlist"
 567 NV_PVLIST = "pvlist"
 568 NV_DRBDLIST = "drbd-list"
 569 NV_NODESETUP = "nodesetup"
 570 NV_TIME = "time"
 571
 572 # Allocator framework constants
 573 IALLOCATOR_VERSION = 2
 574 IALLOCATOR_DIR_IN = "in"
 575 IALLOCATOR_DIR_OUT = "out"
 576 IALLOCATOR_MODE_ALLOC = "allocate"
 577 IALLOCATOR_MODE_RELOC = "relocate"
 578 IALLOCATOR_MODE_MEVAC = "multi-evacuate"
 579 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
 580
 581 # Job queue
 582 JOB_QUEUE_VERSION = 1
 583 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
 584 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
 585 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
 586 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
 587 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
 588 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
 589 JOB_QUEUE_SIZE_SOFT_LIMIT = JOB_QUEUE_SIZE_HARD_LIMIT * 0.8
 590
 591 JOB_ID_TEMPLATE = r"\d+"
 592
 593 # unchanged job return
 594 JOB_NOTCHANGED = "nochange"
 595
 596 # Job status
 597 JOB_STATUS_QUEUED = "queued"
 598 JOB_STATUS_WAITLOCK = "waiting"
 599 JOB_STATUS_CANCELING = "canceling"
 600 JOB_STATUS_RUNNING = "running"
 601 JOB_STATUS_CANCELED = "canceled"
 602 JOB_STATUS_SUCCESS = "success"
 603 JOB_STATUS_ERROR = "error"
 604
 605 # OpCode status
 606 # not yet finalized
 607 OP_STATUS_QUEUED = "queued"
 608 OP_STATUS_WAITLOCK = "waiting"
 609 OP_STATUS_CANCELING = "canceling"
 610 OP_STATUS_RUNNING = "running"
 611 # finalized
 612 OP_STATUS_CANCELED = "canceled"
 613 OP_STATUS_SUCCESS = "success"
 614 OP_STATUS_ERROR = "error"
 615 OPS_FINALIZED = frozenset([OP_STATUS_CANCELED,
 616                            OP_STATUS_SUCCESS,
 617                            OP_STATUS_ERROR])
 618
 619 # Execution log types
 620 ELOG_MESSAGE = "message"
 621 ELOG_PROGRESS = "progress"
 622
 623 # max dynamic devices
 624 MAX_NICS = 8
 625 MAX_DISKS = 16
 626
 627 # SSCONF keys
 628 SS_CLUSTER_NAME = "cluster_name"
 629 SS_CLUSTER_TAGS = "cluster_tags"
 630 SS_FILE_STORAGE_DIR = "file_storage_dir"
 631 SS_MASTER_CANDIDATES = "master_candidates"
 632 SS_MASTER_CANDIDATES_IPS = "master_candidates_ips"
 633 SS_MASTER_IP = "master_ip"
 634 SS_MASTER_NETDEV = "master_netdev"
 635 SS_MASTER_NODE = "master_node"
 636 SS_NODE_LIST = "node_list"
 637 SS_NODE_PRIMARY_IPS = "node_primary_ips"
 638 SS_NODE_SECONDARY_IPS = "node_secondary_ips"
 639 SS_OFFLINE_NODES = "offline_nodes"
 640 SS_ONLINE_NODES = "online_nodes"
 641 SS_INSTANCE_LIST = "instance_list"
 642 SS_RELEASE_VERSION = "release_version"
 643
 644 # cluster wide default parameters
 645 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
 646
 647 HVC_DEFAULTS = {
 648   HT_XEN_PVM: {
 649     HV_USE_BOOTLOADER: False,
 650     HV_BOOTLOADER_PATH: XEN_BOOTLOADER,
 651     HV_BOOTLOADER_ARGS: '',
 652     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU",
 653     HV_INITRD_PATH: '',
 654     HV_ROOT_PATH: '/dev/sda1',
 655     HV_KERNEL_ARGS: 'ro',
 656     HV_MIGRATION_PORT: 8002,
 657     },
 658   HT_XEN_HVM: {
 659     HV_BOOT_ORDER: "cd",
 660     HV_CDROM_IMAGE_PATH: '',
 661     HV_NIC_TYPE: HT_NIC_RTL8139,
 662     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
 663     HV_VNC_BIND_ADDRESS: '0.0.0.0',
 664     HV_VNC_PASSWORD_FILE: VNC_PASSWORD_FILE,
 665     HV_ACPI: True,
 666     HV_PAE: True,
 667     HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
 668     HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
 669     HV_MIGRATION_PORT: 8002,
 670     HV_USE_LOCALTIME: False,
 671     },
 672   HT_KVM: {
 673     HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU",
 674     HV_INITRD_PATH: '',
 675     HV_KERNEL_ARGS: 'ro',
 676     HV_ROOT_PATH: '/dev/vda1',
 677     HV_ACPI: True,
 678     HV_SERIAL_CONSOLE: True,
 679     HV_VNC_BIND_ADDRESS: '',
 680     HV_VNC_TLS: False,
 681     HV_VNC_X509: '',
 682     HV_VNC_X509_VERIFY: False,
 683     HV_VNC_PASSWORD_FILE: '',
 684     HV_CDROM_IMAGE_PATH: '',
 685     HV_BOOT_ORDER: HT_BO_DISK,
 686     HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
 687     HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
 688     HV_USB_MOUSE: '',
 689     HV_MIGRATION_PORT: 8102,
 690     HV_USE_LOCALTIME: False,
 691     HV_DISK_CACHE: HT_CACHE_DEFAULT,
 692     },
 693   HT_FAKE: {
 694     },
 695   HT_CHROOT: {
 696     HV_INIT_SCRIPT: "/ganeti-chroot",
 697     },
 698   }
 699
 700 HVC_GLOBALS = frozenset([
 701   HV_MIGRATION_PORT,
 702   ])
 703
 704 BEC_DEFAULTS = {
 705   BE_MEMORY: 128,
 706   BE_VCPUS: 1,
 707   BE_AUTO_BALANCE: True,
 708   }
 709
 710 NICC_DEFAULTS = {
 711   NIC_MODE: NIC_MODE_BRIDGED,
 712   NIC_LINK: DEFAULT_BRIDGE,
 713   }
 714
 715 MASTER_POOL_SIZE_DEFAULT = 10
 716
 717 CONFD_PROTOCOL_VERSION = 1
 718
 719 CONFD_REQ_PING = 0
 720 CONFD_REQ_NODE_ROLE_BYNAME = 1
 721 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP = 2
 722 CONFD_REQ_CLUSTER_MASTER = 3
 723 CONFD_REQ_NODE_PIP_LIST = 4
 724 CONFD_REQ_MC_PIP_LIST = 5
 725 CONFD_REQ_INSTANCES_IPS_LIST = 6
 726
 727 # Confd request query fields. These are used to narrow down queries.
 728 # These must be strings rather than integers, because json-encoding
 729 # converts them to strings anyway, as they're used as dict-keys.
 730 CONFD_REQQ_LINK = "0"
 731 CONFD_REQQ_IP = "1"
 732 CONFD_REQQ_IPLIST = "2"
 733 CONFD_REQQ_FIELDS = "3"
 734
 735 CONFD_REQFIELD_NAME = "0"
 736 CONFD_REQFIELD_IP = "1"
 737 CONFD_REQFIELD_MNODE_PIP = "2"
 738
 739 CONFD_REQS = frozenset([
 740   CONFD_REQ_PING,
 741   CONFD_REQ_NODE_ROLE_BYNAME,
 742   CONFD_REQ_NODE_PIP_BY_INSTANCE_IP,
 743   CONFD_REQ_CLUSTER_MASTER,
 744   CONFD_REQ_NODE_PIP_LIST,
 745   CONFD_REQ_MC_PIP_LIST,
 746   CONFD_REQ_INSTANCES_IPS_LIST,
 747   ])
 748
 749 CONFD_REPL_STATUS_OK = 0
 750 CONFD_REPL_STATUS_ERROR = 1
 751 CONFD_REPL_STATUS_NOTIMPLEMENTED = 2
 752
 753 CONFD_REPL_STATUSES = frozenset([
 754   CONFD_REPL_STATUS_OK,
 755   CONFD_REPL_STATUS_ERROR,
 756   CONFD_REPL_STATUS_NOTIMPLEMENTED,
 757   ])
 758
 759 (CONFD_NODE_ROLE_MASTER,
 760  CONFD_NODE_ROLE_CANDIDATE,
 761  CONFD_NODE_ROLE_OFFLINE,
 762  CONFD_NODE_ROLE_DRAINED,
 763  CONFD_NODE_ROLE_REGULAR,
 764  ) = range(5)
 765
 766 # A few common errors for confd
 767 CONFD_ERROR_UNKNOWN_ENTRY = 1
 768 CONFD_ERROR_INTERNAL = 2
 769 CONFD_ERROR_ARGUMENT = 3
 770
 771 # Each request is "salted" by the current timestamp.
 772 # This constants decides how many seconds of skew to accept.
 773 # TODO: make this a default and allow the value to be more configurable
 774 CONFD_MAX_CLOCK_SKEW = 2 * NODE_MAX_CLOCK_SKEW
 775
 776 # When we haven't reloaded the config for more than this amount of seconds, we
 777 # force a test to see if inotify is betraying us.
 778 CONFD_CONFIG_RELOAD_TIMEOUT = 60
 779
 780 # If we receive more than one update in this amount of seconds, we move to
 781 # polling every RATELIMIT seconds, rather than relying on inotify, to be able
 782 # to serve more requests.
 783 CONFD_CONFIG_RELOAD_RATELIMIT = 2
 784
 785 # Magic number prepended to all confd queries.
 786 # This allows us to distinguish different types of confd protocols and handle
 787 # them. For example by changing this we can move the whole payload to be
 788 # compressed, or move away from json.
 789 CONFD_MAGIC_FOURCC = 'plj0'
 790
 791 # By default a confd request is sent to the minimum between this number and all
 792 # MCs. 6 was chosen because even in the case of a disastrous 50% response rate,
 793 # we should have enough answers to be able to compare more than one.
 794 CONFD_DEFAULT_REQ_COVERAGE = 6
 795
 796 # Timeout in seconds to expire pending query request in the confd client
 797 # library. We don't actually expect any answer more than 10 seconds after we
 798 # sent a request.
 799 CONFD_CLIENT_EXPIRE_TIMEOUT = 10
 800
 801 # Maximum UDP datagram size.
 802 # On IPv4: 64K - 20 (ip header size) - 8 (udp header size) = 65507
 803 # On IPv6: 64K - 40 (ip6 header size) - 8 (udp header size) = 65487
 804 #   (assuming we can't use jumbo frames)
 805 # We just set this to 60K, which should be enough
 806 MAX_UDP_DATA_SIZE = 61440