constants.py 33.8 KB
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#
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#

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# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc.
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#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


"""Module holding different constants."""

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import re

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from ganeti import _autoconf
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# various versions
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RELEASE_VERSION = _autoconf.PACKAGE_VERSION
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OS_API_V10 = 10
OS_API_V15 = 15
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OS_API_V20 = 20
OS_API_VERSIONS = frozenset([OS_API_V10, OS_API_V15, OS_API_V20])
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VCS_VERSION = _autoconf.VCS_VERSION
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EXPORT_VERSION = 0
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RAPI_VERSION = 2
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# Format for CONFIG_VERSION:
#   01 03 0123 = 01030123
#   ^^ ^^ ^^^^
#   |  |  + Configuration version/revision
#   |  + Minor version
#   + Major version
#
# It stored as an integer. Make sure not to write an octal number.
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# BuildVersion and SplitVersion must be in here because we can't import other
# modules. The cfgupgrade tool must be able to read and write version numbers
# and thus requires these functions. To avoid code duplication, they're kept in
# here.

def BuildVersion(major, minor, revision):
  """Calculates int version number from major, minor and revision numbers.

  Returns: int representing version number

  """
  assert isinstance(major, int)
  assert isinstance(minor, int)
  assert isinstance(revision, int)
  return (1000000 * major +
            10000 * minor +
                1 * revision)


def SplitVersion(version):
  """Splits version number stored in an int.

  Returns: tuple; (major, minor, revision)

  """
  assert isinstance(version, int)

  (major, remainder) = divmod(version, 1000000)
  (minor, revision) = divmod(remainder, 10000)

  return (major, minor, revision)


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CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
CONFIG_REVISION = 0
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CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
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#: RPC protocol version
PROTOCOL_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, 0)

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# user separation
DAEMONS_GROUP = _autoconf.DAEMONS_GROUP
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ADMIN_GROUP = _autoconf.ADMIN_GROUP
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MASTERD_USER = _autoconf.MASTERD_USER
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MASTERD_GROUP = _autoconf.MASTERD_GROUP
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RAPI_USER = _autoconf.RAPI_USER
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RAPI_GROUP = _autoconf.RAPI_GROUP
CONFD_USER = _autoconf.CONFD_USER
CONFD_GROUP = _autoconf.CONFD_GROUP
NODED_USER = _autoconf.NODED_USER
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# Wipe
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DD_CMD = "dd"
WIPE_BLOCK_SIZE = 1024**2
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MAX_WIPE_CHUNK = 1024 # 1GB
MIN_WIPE_CHUNK_PERCENT = 10

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# file paths
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DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti"
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RUN_DIR = _autoconf.LOCALSTATEDIR + "/run"
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RUN_GANETI_DIR = RUN_DIR + "/ganeti"
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BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache"
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DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks"
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RUN_DIRS_MODE = 0775
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SOCKET_DIR = RUN_GANETI_DIR + "/socket"
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SECURE_DIR_MODE = 0700
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SECURE_FILE_MODE = 0600
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SOCKET_DIR_MODE = 0750
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CRYPTO_KEYS_DIR = RUN_GANETI_DIR + "/crypto"
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CRYPTO_KEYS_DIR_MODE = SECURE_DIR_MODE
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IMPORT_EXPORT_DIR = RUN_GANETI_DIR + "/import-export"
IMPORT_EXPORT_DIR_MODE = 0755
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# keep RUN_GANETI_DIR first here, to make sure all get created when the node
# daemon is started (this takes care of RUN_DIR being tmpfs)
SUB_RUN_DIRS = [ RUN_GANETI_DIR, BDEV_CACHE_DIR, DISK_LINKS_DIR ]
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LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock"
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SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock"
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# User-id pool lock directory
# The user-ids that are in use have a corresponding lock file in this directory
UIDPOOL_LOCKDIR = RUN_GANETI_DIR + "/uid-pool"
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CLUSTER_CONF_FILE = DATA_DIR + "/config.data"
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NODED_CERT_FILE = DATA_DIR + "/server.pem"
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RAPI_CERT_FILE = DATA_DIR + "/rapi.pem"
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CONFD_HMAC_KEY = DATA_DIR + "/hmac.key"
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CLUSTER_DOMAIN_SECRET_FILE = DATA_DIR + "/cluster-domain-secret"
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WATCHER_STATEFILE = DATA_DIR + "/watcher.data"
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WATCHER_PAUSEFILE = DATA_DIR + "/watcher.pause"
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INSTANCE_UPFILE = RUN_GANETI_DIR + "/instance-status"
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SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts"
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RAPI_USERS_FILE = DATA_DIR + "/rapi/users"
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QUEUE_DIR = DATA_DIR + "/queue"
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DAEMON_UTIL = _autoconf.PKGLIBDIR + "/daemon-util"
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SETUP_SSH = _autoconf.TOOLSDIR + "/setup-ssh"
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KVM_IFUP = _autoconf.PKGLIBDIR + "/kvm-ifup"
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ETC_HOSTS = "/etc/hosts"
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DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
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ENABLE_FILE_STORAGE = _autoconf.ENABLE_FILE_STORAGE
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SYSCONFDIR = _autoconf.SYSCONFDIR
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TOOLSDIR = _autoconf.TOOLSDIR
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CONF_DIR = SYSCONFDIR + "/ganeti"
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ALL_CERT_FILES = frozenset([NODED_CERT_FILE, RAPI_CERT_FILE])
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MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
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NODED = "ganeti-noded"
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CONFD = "ganeti-confd"
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RAPI = "ganeti-rapi"
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MASTERD = "ganeti-masterd"
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# used in the ganeti-nbma project
NLD = "ganeti-nld"
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DAEMONS_PORTS = {
  # daemon-name: ("proto", "default-port")
  NODED: ("tcp", 1811),
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  CONFD: ("udp", 1814),
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  RAPI: ("tcp", 5080),
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  "ssh": ("tcp", 22),
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  # used in the ganeti-nbma project
  NLD: ("udp", 1816),
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}
DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
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DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
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DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
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# used in the ganeti-nbma project
DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
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FIRST_DRBD_PORT = 11000
LAST_DRBD_PORT = 14999
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MASTER_SCRIPT = "ganeti-master"
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LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
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DAEMONS_LOGFILES = {
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  # "daemon-name": "logfile"
  NODED: LOG_DIR + "node-daemon.log",
  CONFD: LOG_DIR + "conf-daemon.log",
  RAPI: LOG_DIR + "rapi-daemon.log",
  MASTERD: LOG_DIR + "master-daemon.log",
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  # used in the ganeti-nbma project
  NLD: LOG_DIR + "nl-daemon.log",
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  }
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LOG_OS_DIR = LOG_DIR + "os"
LOG_WATCHER = LOG_DIR + "watcher.log"
LOG_COMMANDS = LOG_DIR + "commands.log"
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LOG_BURNIN = LOG_DIR + "burnin.log"
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LOG_SETUP_SSH = LOG_DIR + "setup-ssh.log"
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DEV_CONSOLE = "/dev/console"

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PROC_MOUNTS = "/proc/mounts"

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# luxi related constants
LUXI_EOM = "\3"
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LUXI_VERSION = CONFIG_VERSION
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# one of 'no', 'yes', 'only'
SYSLOG_USAGE = _autoconf.SYSLOG_USAGE
SYSLOG_NO = "no"
SYSLOG_YES = "yes"
SYSLOG_ONLY = "only"
SYSLOG_SOCKET = "/dev/log"

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OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
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EXPORT_DIR = _autoconf.EXPORT_DIR
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EXPORT_CONF_FILE = "config.ini"

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XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
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XEN_KERNEL = _autoconf.XEN_KERNEL
XEN_INITRD = _autoconf.XEN_INITRD

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KVM_PATH = _autoconf.KVM_PATH
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SOCAT_PATH = _autoconf.SOCAT_PATH
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SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
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SOCAT_USE_COMPRESS = _autoconf.SOCAT_USE_COMPRESS
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SOCAT_ESCAPE_CODE = "0x1d"
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#: Console as SSH command
CONS_SSH = "ssh"

#: Console as VNC server
CONS_VNC = "vnc"

#: Display a message for console access
CONS_MESSAGE = "msg"

#: All console types
CONS_ALL = frozenset([CONS_SSH, CONS_VNC, CONS_MESSAGE])

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# For RSA keys more bits are better, but they also make operations more
# expensive. NIST SP 800-131 recommends a minimum of 2048 bits from the year
# 2010 on.
RSA_KEY_BITS = 2048

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# Ciphers allowed for SSL connections. For the format, see ciphers(1). A better
# way to disable ciphers would be to use the exclamation mark (!), but socat
# versions below 1.5 can't parse exclamation marks in options properly. When
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# modifying the ciphers, ensure not to accidentially add something after it's
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# been removed. Use the "openssl" utility to check the allowed ciphers, e.g.
# "openssl ciphers -v HIGH:-DES".
OPENSSL_CIPHERS = "HIGH:-DES:-3DES:-EXPORT:-ADH"

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# Digest used to sign certificates ("openssl x509" uses SHA1 by default)
X509_CERT_SIGN_DIGEST = "SHA1"

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# Default validity of certificates in days
X509_CERT_DEFAULT_VALIDITY = 365 * 5

# commonName (CN) used in certificates
X509_CERT_CN = "ganeti.example.com"

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X509_CERT_SIGNATURE_HEADER = "X-Ganeti-Signature"

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IMPORT_EXPORT_DAEMON = _autoconf.PKGLIBDIR + "/import-export"

# Import/export daemon mode
IEM_IMPORT = "import"
IEM_EXPORT = "export"

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# Import/export transport compression
IEC_NONE = "none"
IEC_GZIP = "gzip"
IEC_ALL = frozenset([
  IEC_NONE,
  IEC_GZIP,
  ])

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IE_CUSTOM_SIZE = "fd"

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IE_MAGIC_RE = re.compile(r"^[-_.a-zA-Z0-9]{5,100}$")

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# Import/export I/O
# Direct file I/O, equivalent to a shell's I/O redirection using '<' or '>'
IEIO_FILE = "file"
# Raw block device I/O using "dd"
IEIO_RAW_DISK = "raw"
# OS definition import/export script
IEIO_SCRIPT = "script"

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VALUE_DEFAULT = "default"
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VALUE_AUTO = "auto"
VALUE_GENERATE = "generate"
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VALUE_NONE = "none"
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VALUE_TRUE = "true"
VALUE_FALSE = "false"
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# External script validation mask
EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")

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# hooks-related constants
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HOOKS_BASE_DIR = CONF_DIR + "/hooks"
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HOOKS_PHASE_PRE = "pre"
HOOKS_PHASE_POST = "post"
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HOOKS_NAME_CFGUPDATE = "config-update"
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HOOKS_NAME_WATCHER = "watcher"
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HOOKS_VERSION = 2
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# hooks subject type (what object type does the LU deal with)
HTYPE_CLUSTER = "CLUSTER"
HTYPE_NODE = "NODE"
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HTYPE_GROUP = "GROUP"
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HTYPE_INSTANCE = "INSTANCE"

HKR_SKIP = 0
HKR_FAIL = 1
HKR_SUCCESS = 2

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# Storage types
ST_FILE = "file"
ST_LVM_PV = "lvm-pv"
ST_LVM_VG = "lvm-vg"
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# Storage fields
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# first two are valid in LU context only, not passed to backend
SF_NODE = "node"
SF_TYPE = "type"
# and the rest are valid in backend
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SF_NAME = "name"
SF_SIZE = "size"
SF_FREE = "free"
SF_USED = "used"
SF_ALLOCATABLE = "allocatable"

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# Storage operations
SO_FIX_CONSISTENCY = "fix-consistency"

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# Available fields per storage type
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VALID_STORAGE_FIELDS = frozenset([SF_NAME, SF_TYPE, SF_SIZE,
                                  SF_USED, SF_FREE, SF_ALLOCATABLE])

VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
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MODIFIABLE_STORAGE_FIELDS = {
  ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
  }

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VALID_STORAGE_OPERATIONS = {
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  ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
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  }

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# Local disk status
# Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
(LDS_OKAY,
 LDS_UNKNOWN,
 LDS_FAULTY) = range(1, 4)

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# disk template types
DT_DISKLESS = "diskless"
DT_PLAIN = "plain"
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DT_DRBD8 = "drbd"
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DT_FILE = "file"
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# the set of network-mirrored disk templates
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DTS_NET_MIRROR = frozenset([DT_DRBD8])
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# the set of non-lvm-based disk templates
DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE])

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# the set of disk templates which can be grown
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DTS_GROWABLE = frozenset([DT_PLAIN, DT_DRBD8, DT_FILE])
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# the set of disk templates that allow adoption
DTS_MAY_ADOPT = frozenset([DT_PLAIN])

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# logical disk types
LD_LV = "lvm"
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LD_DRBD8 = "drbd8"
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LD_FILE = "file"
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LDS_BLOCK = frozenset([LD_LV, LD_DRBD8])
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# drbd constants
DRBD_HMAC_ALG = "md5"
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DRBD_NET_PROTOCOL = "C"
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DRBD_BARRIERS = _autoconf.DRBD_BARRIERS
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# file backend driver
FD_LOOP = "loop"
FD_BLKTAP = "blktap"
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# the set of drbd-like disk types
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LDS_DRBD = frozenset([LD_DRBD8])
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# disk access mode
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DISK_RDONLY = "ro"
DISK_RDWR = "rw"
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DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])

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# disk replacement mode
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REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
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REPLACE_DISK_AUTO = "replace_auto"
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REPLACE_MODES = frozenset([
  REPLACE_DISK_PRI,
  REPLACE_DISK_SEC,
  REPLACE_DISK_CHG,
  REPLACE_DISK_AUTO,
  ])
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# Instance export mode
EXPORT_MODE_LOCAL = "local"
EXPORT_MODE_REMOTE = "remote"
EXPORT_MODES = frozenset([
  EXPORT_MODE_LOCAL,
  EXPORT_MODE_REMOTE,
  ])

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# lock recalculate mode
LOCKS_REPLACE = 'replace'
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LOCKS_APPEND = 'append'
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# instance creation modes
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INSTANCE_CREATE = "create"
INSTANCE_IMPORT = "import"
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INSTANCE_REMOTE_IMPORT = "remote-import"
INSTANCE_CREATE_MODES = frozenset([
  INSTANCE_CREATE,
  INSTANCE_IMPORT,
  INSTANCE_REMOTE_IMPORT,
  ])
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# Remote import/export handshake message and version
RIE_VERSION = 0
RIE_HANDSHAKE = "Hi, I'm Ganeti"

# Remote import/export certificate validity in seconds
RIE_CERT_VALIDITY = 24 * 60 * 60

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# Overall timeout for establishing connection
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RIE_CONNECT_TIMEOUT = 180
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# Export only: how long to wait per connection attempt (seconds)
RIE_CONNECT_ATTEMPT_TIMEOUT = 20

# Export only: number of attempts to connect
RIE_CONNECT_RETRIES = 10

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#: Give child process up to 5 seconds to exit after sending a signal
CHILD_LINGER_TIMEOUT = 5.0
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DISK_TEMPLATES = frozenset([DT_DISKLESS, DT_PLAIN,
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                            DT_DRBD8, DT_FILE])

FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
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# import/export config options
INISECT_EXP = "export"
INISECT_INS = "instance"
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INISECT_HYP = "hypervisor"
INISECT_BEP = "backend"
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INISECT_OSP = "os"
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# dynamic device modification
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DDM_ADD = "add"
DDM_REMOVE = "remove"
DDMS_VALUES = frozenset([DDM_ADD, DDM_REMOVE])
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# common exit codes
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EXIT_SUCCESS = 0
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EXIT_FAILURE = 1
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EXIT_NOTCLUSTER = 5
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EXIT_NOTMASTER = 11
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EXIT_NODESETUP_ERROR = 12
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EXIT_CONFIRMATION = 13 # need user confirmation
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#: Exit code for query operations with unknown fields
EXIT_UNKNOWN_FIELD = 14

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# tags
TAG_CLUSTER = "cluster"
TAG_NODE = "node"
TAG_INSTANCE = "instance"
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VALID_TAG_TYPES = frozenset([
  TAG_CLUSTER,
  TAG_NODE,
  TAG_INSTANCE,
  ])
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MAX_TAG_LEN = 128
MAX_TAGS_PER_OBJ = 4096

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# others
DEFAULT_BRIDGE = "xen-br0"
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SYNC_SPEED = 60 * 1024
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IP4_ADDRESS_LOCALHOST = "127.0.0.1"
IP4_ADDRESS_ANY = "0.0.0.0"
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IP6_ADDRESS_LOCALHOST = "::1"
IP6_ADDRESS_ANY = "::"
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IP4_VERSION = 4
IP6_VERSION = 6
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TCP_PING_TIMEOUT = 10
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GANETI_RUNAS = "root"
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DEFAULT_VG = "xenvg"
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DEFAULT_DRBD_HELPER = "/bin/true"
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MIN_VG_SIZE = 20480
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DEFAULT_MAC_PREFIX = "aa:00:00"
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LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT
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# default maximum instance wait time, in seconds.
DEFAULT_SHUTDOWN_TIMEOUT = 120
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NODE_MAX_CLOCK_SKEW = 150
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# Time for an intra-cluster disk transfer to wait for a connection
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DISK_TRANSFER_CONNECT_TIMEOUT = 60
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# Disk index separator
DISK_SEPARATOR = _autoconf.DISK_SEPARATOR
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# runparts results
(RUNPARTS_SKIP,
 RUNPARTS_RUN,
 RUNPARTS_ERR) = range(3)

RUNPARTS_STATUS = frozenset([RUNPARTS_SKIP, RUNPARTS_RUN, RUNPARTS_ERR])

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# RPC constants
(RPC_ENCODING_NONE,
 RPC_ENCODING_ZLIB_BASE64) = range(2)

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# os related constants
OS_SCRIPT_CREATE = 'create'
OS_SCRIPT_IMPORT = 'import'
OS_SCRIPT_EXPORT = 'export'
OS_SCRIPT_RENAME = 'rename'
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OS_SCRIPT_VERIFY = 'verify'
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OS_SCRIPTS = frozenset([OS_SCRIPT_CREATE, OS_SCRIPT_IMPORT,
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                        OS_SCRIPT_EXPORT, OS_SCRIPT_RENAME,
                        OS_SCRIPT_VERIFY])
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OS_API_FILE = 'ganeti_api_version'
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OS_VARIANTS_FILE = 'variants.list'
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OS_PARAMETERS_FILE = 'parameters.list'

OS_VALIDATE_PARAMETERS = 'parameters'
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OS_VALIDATE_CALLS = frozenset([OS_VALIDATE_PARAMETERS])
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# ssh constants
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SSH_CONFIG_DIR = _autoconf.SSH_CONFIG_DIR
SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_dsa_key"
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SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
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SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "/ssh_host_rsa_key"
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SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
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SSH = "ssh"
SCP = "scp"
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# reboot types
INSTANCE_REBOOT_SOFT = "soft"
INSTANCE_REBOOT_HARD = "hard"
INSTANCE_REBOOT_FULL = "full"
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REBOOT_TYPES = frozenset([INSTANCE_REBOOT_SOFT,
                          INSTANCE_REBOOT_HARD,
                          INSTANCE_REBOOT_FULL])

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VTYPE_STRING = 'string'
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VTYPE_MAYBE_STRING = "maybe-string"
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VTYPE_BOOL = 'bool'
VTYPE_SIZE = 'size' # size, in MiBs
VTYPE_INT = 'int'
ENFORCEABLE_TYPES = frozenset([
                      VTYPE_STRING,
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                      VTYPE_MAYBE_STRING,
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                      VTYPE_BOOL,
                      VTYPE_SIZE,
                      VTYPE_INT,
                      ])

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# HV parameter names (global namespace)
HV_BOOT_ORDER = "boot_order"
HV_CDROM_IMAGE_PATH = "cdrom_image_path"
HV_NIC_TYPE = "nic_type"
HV_DISK_TYPE = "disk_type"
HV_VNC_BIND_ADDRESS = "vnc_bind_address"
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HV_VNC_PASSWORD_FILE = "vnc_password_file"
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HV_VNC_TLS = "vnc_tls"
HV_VNC_X509 = "vnc_x509_path"
HV_VNC_X509_VERIFY = "vnc_x509_verify"
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HV_ACPI = "acpi"
HV_PAE = "pae"
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HV_USE_BOOTLOADER = "use_bootloader"
HV_BOOTLOADER_ARGS = "bootloader_args"
HV_BOOTLOADER_PATH = "bootloader_path"
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HV_KERNEL_ARGS = "kernel_args"
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HV_KERNEL_PATH = "kernel_path"
HV_INITRD_PATH = "initrd_path"
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HV_ROOT_PATH = "root_path"
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HV_SERIAL_CONSOLE = "serial_console"
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HV_USB_MOUSE = "usb_mouse"
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HV_DEVICE_MODEL = "device_model"
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HV_INIT_SCRIPT = "init_script"
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HV_MIGRATION_PORT = "migration_port"
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HV_MIGRATION_BANDWIDTH = "migration_bandwidth"
HV_MIGRATION_DOWNTIME = "migration_downtime"
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HV_MIGRATION_MODE = "migration_mode"
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HV_USE_LOCALTIME = "use_localtime"
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HV_DISK_CACHE = "disk_cache"
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HV_SECURITY_MODEL = "security_model"
HV_SECURITY_DOMAIN = "security_domain"
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HV_KVM_FLAG = "kvm_flag"
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HV_VHOST_NET = "vhost_net"
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HV_KVM_USE_CHROOT = "use_chroot"
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HV_CPU_MASK = "cpu_mask"
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HV_MEM_PATH = "mem_path"
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HV_BLOCKDEV_PREFIX = "blockdev_prefix"
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HVS_PARAMETER_TYPES = {
  HV_BOOT_ORDER: VTYPE_STRING,
  HV_CDROM_IMAGE_PATH: VTYPE_STRING,
  HV_NIC_TYPE: VTYPE_STRING,
  HV_DISK_TYPE: VTYPE_STRING,
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  HV_VNC_PASSWORD_FILE: VTYPE_STRING,
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  HV_VNC_BIND_ADDRESS: VTYPE_STRING,
  HV_VNC_TLS: VTYPE_BOOL,
  HV_VNC_X509: VTYPE_STRING,
  HV_VNC_X509_VERIFY: VTYPE_BOOL,
  HV_ACPI: VTYPE_BOOL,
  HV_PAE: VTYPE_BOOL,
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  HV_USE_BOOTLOADER: VTYPE_BOOL,
  HV_BOOTLOADER_PATH: VTYPE_STRING,
  HV_BOOTLOADER_ARGS: VTYPE_STRING,
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  HV_KERNEL_PATH: VTYPE_STRING,
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  HV_KERNEL_ARGS: VTYPE_STRING,
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  HV_INITRD_PATH: VTYPE_STRING,
  HV_ROOT_PATH: VTYPE_STRING,
  HV_SERIAL_CONSOLE: VTYPE_BOOL,
  HV_USB_MOUSE: VTYPE_STRING,
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  HV_DEVICE_MODEL: VTYPE_STRING,
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  HV_INIT_SCRIPT: VTYPE_STRING,
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  HV_MIGRATION_PORT: VTYPE_INT,
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  HV_MIGRATION_BANDWIDTH: VTYPE_INT,
  HV_MIGRATION_DOWNTIME: VTYPE_INT,
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  HV_MIGRATION_MODE: VTYPE_STRING,
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  HV_USE_LOCALTIME: VTYPE_BOOL,
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  HV_DISK_CACHE: VTYPE_STRING,
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  HV_SECURITY_MODEL: VTYPE_STRING,
  HV_SECURITY_DOMAIN: VTYPE_STRING,
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  HV_KVM_FLAG: VTYPE_STRING,
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  HV_VHOST_NET: VTYPE_BOOL,
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  HV_KVM_USE_CHROOT: VTYPE_BOOL,
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  HV_CPU_MASK: VTYPE_STRING,
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  HV_MEM_PATH: VTYPE_STRING,
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  HV_BLOCKDEV_PREFIX: VTYPE_STRING,
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  }

HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
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# BE parameter names
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BE_MEMORY = "memory"
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BE_VCPUS = "vcpus"
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BE_AUTO_BALANCE = "auto_balance"
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BES_PARAMETER_TYPES = {
    BE_MEMORY: VTYPE_SIZE,
    BE_VCPUS: VTYPE_INT,
    BE_AUTO_BALANCE: VTYPE_BOOL,
    }

BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
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# Node parameter names
ND_OOB_PROGRAM = "oob_program"

NDS_PARAMETER_TYPES = {
    ND_OOB_PROGRAM: VTYPE_MAYBE_STRING,
    }

NDS_PARAMETERS = frozenset(NDS_PARAMETER_TYPES.keys())

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# OOB supported commands
OOB_POWER_ON = "power-on"
OOB_POWER_OFF = "power-off"
OOB_POWER_CYCLE = "power-cycle"
OOB_POWER_STATUS = "power-status"
OOB_HEALTH = "health"

OOB_COMMANDS = frozenset([OOB_POWER_ON, OOB_POWER_OFF, OOB_POWER_CYCLE,
                          OOB_POWER_STATUS, OOB_HEALTH])

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OOB_POWER_STATUS_POWERED = "powered"

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OOB_TIMEOUT = 60 # 60 seconds

OOB_STATUS_OK = "OK"
OOB_STATUS_WARNING = "WARNING"
OOB_STATUS_CRITICAL = "CRITICAL"
OOB_STATUS_UNKNOWN = "UNKNOWN"

OOB_STATUSES = frozenset([
  OOB_STATUS_OK,
  OOB_STATUS_WARNING,
  OOB_STATUS_CRITICAL,
  OOB_STATUS_UNKNOWN,
  ])

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# Instance Parameters Profile
PP_DEFAULT = "default"
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NIC_MODE = "mode"
NIC_LINK = "link"

NIC_MODE_BRIDGED = "bridged"
NIC_MODE_ROUTED = "routed"

NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])

NICS_PARAMETER_TYPES = {
    NIC_MODE: VTYPE_STRING,
    NIC_LINK: VTYPE_STRING,
    }

NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
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IDISK_SIZE = "size"
IDISK_MODE = "mode"
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IDISK_ADOPT = "adopt"
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IDISK_VG = "vg"
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IDISK_PARAMS_TYPES = {
  IDISK_SIZE: VTYPE_SIZE,
  IDISK_MODE: VTYPE_STRING,
  IDISK_ADOPT: VTYPE_STRING,
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  IDISK_VG: VTYPE_STRING,
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  }
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IDISK_PARAMS = frozenset(IDISK_PARAMS_TYPES.keys())

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INIC_MAC = "mac"
INIC_IP = "ip"
INIC_MODE = "mode"
INIC_LINK = "link"
INIC_BRIDGE = "bridge"
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INIC_PARAMS_TYPES = {
  INIC_BRIDGE: VTYPE_STRING,
  INIC_IP: VTYPE_MAYBE_STRING,
  INIC_LINK: VTYPE_STRING,
  INIC_MAC: VTYPE_STRING,
  INIC_MODE: VTYPE_STRING,
  }
INIC_PARAMS = frozenset(INIC_PARAMS_TYPES.keys())
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# Hypervisor constants
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HT_XEN_PVM = "xen-pvm"
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HT_FAKE = "fake"
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HT_XEN_HVM = "xen-hvm"
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HT_KVM = "kvm"
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HT_CHROOT = "chroot"
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HT_LXC = "lxc"
HYPER_TYPES = frozenset([
  HT_XEN_PVM,
  HT_FAKE,
  HT_XEN_HVM,
  HT_KVM,
  HT_CHROOT,
  HT_LXC,
  ])
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HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
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VNC_BASE_PORT = 5900
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VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
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VNC_DEFAULT_BIND_ADDRESS = IP4_ADDRESS_ANY
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# NIC types
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HT_NIC_RTL8139 = "rtl8139"
HT_NIC_NE2K_PCI = "ne2k_pci"
HT_NIC_NE2K_ISA = "ne2k_isa"
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HT_NIC_I82551 = "i82551"
HT_NIC_I85557B = "i82557b"
HT_NIC_I8259ER = "i82559er"
HT_NIC_PCNET = "pcnet"
HT_NIC_E1000 = "e1000"
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HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
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HT_HVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
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                                    HT_NIC_E1000, HT_NIC_NE2K_ISA,
                                    HT_NIC_PARAVIRTUAL])
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HT_KVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
                                    HT_NIC_NE2K_ISA, HT_NIC_I82551,
                                    HT_NIC_I85557B, HT_NIC_I8259ER,
                                    HT_NIC_PCNET, HT_NIC_E1000,
                                    HT_NIC_PARAVIRTUAL])
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# Disk types
HT_DISK_IOEMU = "ioemu"
HT_DISK_IDE = "ide"
HT_DISK_SCSI = "scsi"
HT_DISK_SD = "sd"
HT_DISK_MTD = "mtd"
HT_DISK_PFLASH = "pflash"

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HT_CACHE_DEFAULT = "default"
HT_CACHE_NONE = "none"
HT_CACHE_WTHROUGH = "writethrough"
HT_CACHE_WBACK = "writeback"
HT_VALID_CACHE_TYPES = frozenset([HT_CACHE_DEFAULT,
                                  HT_CACHE_NONE,
                                  HT_CACHE_WTHROUGH,
                                  HT_CACHE_WBACK])

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HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
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HT_KVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IDE,
                                     HT_DISK_SCSI, HT_DISK_SD, HT_DISK_MTD,
                                     HT_DISK_PFLASH])
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# Mouse types:
HT_MOUSE_MOUSE = "mouse"
HT_MOUSE_TABLET = "tablet"

HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])

# Boot order
HT_BO_CDROM = "cdrom"
HT_BO_DISK = "disk"
HT_BO_NETWORK = "network"

HT_KVM_VALID_BO_TYPES = frozenset([HT_BO_CDROM, HT_BO_DISK, HT_BO_NETWORK])

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# Security models
HT_SM_NONE = "none"
HT_SM_USER = "user"
HT_SM_POOL = "pool"

HT_KVM_VALID_SM_TYPES = frozenset([HT_SM_NONE, HT_SM_USER, HT_SM_POOL])

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# Kvm flag values
HT_KVM_ENABLED = "enabled"
HT_KVM_DISABLED = "disabled"

HT_KVM_FLAG_VALUES = frozenset([HT_KVM_ENABLED, HT_KVM_DISABLED])

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# Migration type
HT_MIGRATION_LIVE = "live"
HT_MIGRATION_NONLIVE = "non-live"
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HT_MIGRATION_MODES = frozenset([HT_MIGRATION_LIVE, HT_MIGRATION_NONLIVE])
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# Cluster Verify steps
VERIFY_NPLUSONE_MEM = 'nplusone_mem'
VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])

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# Node verify constants
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NV_DRBDHELPER = "drbd-helper"
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NV_DRBDLIST = "drbd-list"
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NV_FILELIST = "filelist"
NV_HVINFO = "hvinfo"
NV_HYPERVISOR = "hypervisor"
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NV_HVPARAMS = "hvparms"
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NV_INSTANCELIST = "instancelist"
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NV_LVLIST = "lvlist"
NV_MASTERIP = "master-ip"
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NV_NODELIST = "nodelist"
NV_NODENETTEST = "node-net-test"
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NV_NODESETUP = "nodesetup"
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NV_OSLIST = "oslist"
NV_PVLIST = "pvlist"
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NV_TIME = "time"
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NV_VERSION = "version"
NV_VGLIST = "vglist"
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NV_VMNODES = "vmnodes"
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NV_OOB_PATHS = "oob-paths"
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# Instance status
INSTST_RUNNING = "running"
INSTST_ADMINDOWN = "ADMIN_down"
INSTST_NODEOFFLINE = "ERROR_nodeoffline"
INSTST_NODEDOWN = "ERROR_nodedown"
INSTST_WRONGNODE = "ERROR_wrongnode"
INSTST_ERRORUP = "ERROR_up"
INSTST_ERRORDOWN = "ERROR_down"
INSTST_ALL = frozenset([
  INSTST_RUNNING,
  INSTST_ADMINDOWN,
  INSTST_NODEOFFLINE,
  INSTST_NODEDOWN,
  INSTST_WRONGNODE,
  INSTST_ERRORUP,
  INSTST_ERRORDOWN,
  ])

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# Node roles
NR_REGULAR = "R"
NR_MASTER = "M"
NR_MCANDIDATE = "C"
NR_DRAINED = "D"
NR_OFFLINE = "O"
NR_ALL = frozenset([
  NR_REGULAR,
  NR_MASTER,
  NR_MCANDIDATE,
  NR_DRAINED,
  NR_OFFLINE,
  ])

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# SSL certificate check constants (in days)
SSL_CERT_EXPIRATION_WARN = 30
SSL_CERT_EXPIRATION_ERROR = 7

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# Allocator framework constants
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IALLOCATOR_VERSION = 2
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IALLOCATOR_DIR_IN = "in"
IALLOCATOR_DIR_OUT = "out"
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VALID_IALLOCATOR_DIRECTIONS = frozenset([
  IALLOCATOR_DIR_IN,
  IALLOCATOR_DIR_OUT,
  ])
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IALLOCATOR_MODE_ALLOC = "allocate"
IALLOCATOR_MODE_RELOC = "relocate"
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IALLOCATOR_MODE_MEVAC = "multi-evacuate"
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VALID_IALLOCATOR_MODES = frozenset([
  IALLOCATOR_MODE_ALLOC,
  IALLOCATOR_MODE_RELOC,
  IALLOCATOR_MODE_MEVAC,
  ])
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# Job queue
JOB_QUEUE_VERSION = 1
JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
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JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
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JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
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JOB_QUEUE_SIZE_HARD_LIMIT = 5000
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JOB_QUEUE_DIRS = [QUEUE_DIR, JOB_QUEUE_ARCHIVE_DIR]
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JOB_QUEUE_DIRS_MODE = SECURE_DIR_MODE
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JOB_ID_TEMPLATE = r"\d+"

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# unchanged job return
JOB_NOTCHANGED = "nochange"

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# Job status
JOB_STATUS_QUEUED = "queued"
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JOB_STATUS_WAITLOCK = "waiting"
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JOB_STATUS_CANCELING = "canceling"
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JOB_STATUS_RUNNING = "running"
JOB_STATUS_CANCELED = "canceled"
JOB_STATUS_SUCCESS = "success"
JOB_STATUS_ERROR = "error"
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JOBS_FINALIZED = frozenset([
  JOB_STATUS_CANCELED,
  JOB_STATUS_SUCCESS,
  JOB_STATUS_ERROR,
  ])
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JOB_STATUS_ALL = frozenset([
  JOB_STATUS_QUEUED,
  JOB_STATUS_WAITLOCK,
  JOB_STATUS_CANCELING,
  JOB_STATUS_RUNNING,
  ]) | JOBS_FINALIZED
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# OpCode status
# not yet finalized
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OP_STATUS_QUEUED = "queued"
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OP_STATUS_WAITLOCK = "waiting"
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OP_STATUS_CANCELING = "canceling"
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OP_STATUS_RUNNING = "running"
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# finalized
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OP_STATUS_CANCELED = "canceled"
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OP_STATUS_SUCCESS = "success"
OP_STATUS_ERROR = "error"
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OPS_FINALIZED = frozenset([OP_STATUS_CANCELED,
                           OP_STATUS_SUCCESS,
                           OP_STATUS_ERROR])
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# OpCode priority
OP_PRIO_LOWEST = +19
OP_PRIO_HIGHEST = -20

OP_PRIO_LOW = +10
OP_PRIO_NORMAL = 0
OP_PRIO_HIGH = -10

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OP_PRIO_SUBMIT_VALID = frozenset([
  OP_PRIO_LOW,
  OP_PRIO_NORMAL,
  OP_PRIO_HIGH,
  ])

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OP_PRIO_DEFAULT = OP_PRIO_NORMAL

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# Execution log types
ELOG_MESSAGE = "message"
ELOG_PROGRESS = "progress"
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ELOG_REMOTE_IMPORT = "remote-import"
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ELOG_JQUEUE_TEST = "jqueue-test"

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# /etc/hosts modification
ETC_HOSTS_ADD = "add"
ETC_HOSTS_REMOVE = "remove"

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# Job queue test
JQT_MSGPREFIX = "TESTMSG="
JQT_EXPANDNAMES = "expandnames"
JQT_EXEC = "exec"
JQT_LOGMSG = "logmsg"
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JQT_STARTMSG = "startmsg"
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JQT_ALL = frozenset([
  JQT_EXPANDNAMES,
  JQT_EXEC,
  JQT_LOGMSG,
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  JQT_STARTMSG,
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  ])
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# Query resources
QR_INSTANCE = "instance"
QR_NODE = "node"
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QR_LOCK = "lock"
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QR_GROUP = "group"
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#: List of resources which can be queried using L{opcodes.OpQuery}
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QR_OP_QUERY = frozenset([QR_INSTANCE, QR_NODE, QR_GROUP])
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#: List of resources which can be queried using LUXI
QR_OP_LUXI = QR_OP_QUERY.union([