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

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