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