4 # Copyright (C) 2006, 2007 Google Inc.
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.
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.
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
22 """Module holding different constants."""
24 from ganeti import _autoconf
28 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
31 OS_API_VERSIONS = frozenset([OS_API_V10, OS_API_V15])
36 # Format for CONFIG_VERSION:
37 # 01 03 0123 = 01030123
39 # | | + Configuration version/revision
43 # It stored as an integer. Make sure not to write an octal number.
45 # BuildVersion and SplitVersion must be in here because we can't import other
46 # modules. The cfgupgrade tool must be able to read and write version numbers
47 # and thus requires these functions. To avoid code duplication, they're kept in
50 def BuildVersion(major, minor, revision):
51 """Calculates int version number from major, minor and revision numbers.
53 Returns: int representing version number
56 assert isinstance(major, int)
57 assert isinstance(minor, int)
58 assert isinstance(revision, int)
59 return (1000000 * major +
64 def SplitVersion(version):
65 """Splits version number stored in an int.
67 Returns: tuple; (major, minor, revision)
70 assert isinstance(version, int)
72 (major, remainder) = divmod(version, 1000000)
73 (minor, revision) = divmod(remainder, 10000)
75 return (major, minor, revision)
78 CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
79 CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
81 CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
84 DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti"
85 RUN_DIR = _autoconf.LOCALSTATEDIR + "/run"
86 RUN_GANETI_DIR = RUN_DIR + "/ganeti"
87 BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache"
88 DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks"
90 SOCKET_DIR = RUN_GANETI_DIR + "/socket"
91 SOCKET_DIR_MODE = 0700
92 # keep RUN_GANETI_DIR first here, to make sure all get created when the node
93 # daemon is started (this takes care of RUN_DIR being tmpfs)
94 SUB_RUN_DIRS = [ RUN_GANETI_DIR, BDEV_CACHE_DIR, DISK_LINKS_DIR ]
95 LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock"
96 SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock"
97 CLUSTER_CONF_FILE = DATA_DIR + "/config.data"
98 SSL_CERT_FILE = DATA_DIR + "/server.pem"
99 RAPI_CERT_FILE = DATA_DIR + "/rapi.pem"
100 HMAC_CLUSTER_KEY = DATA_DIR + "/hmac.key"
101 WATCHER_STATEFILE = DATA_DIR + "/watcher.data"
102 WATCHER_PAUSEFILE = DATA_DIR + "/watcher.pause"
103 INSTANCE_UPFILE = RUN_GANETI_DIR + "/instance-status"
104 SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts"
105 RAPI_USERS_FILE = DATA_DIR + "/rapi_users"
106 QUEUE_DIR = DATA_DIR + "/queue"
107 ETC_HOSTS = "/etc/hosts"
108 DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR
109 SYSCONFDIR = _autoconf.SYSCONFDIR
110 TOOLSDIR = _autoconf.TOOLSDIR
111 CONF_DIR = SYSCONFDIR + "/ganeti"
113 MASTER_SOCKET = SOCKET_DIR + "/ganeti-master"
115 NODE_INITD_SCRIPT = SYSCONFDIR + "/init.d/ganeti"
117 NODED = "ganeti-noded"
118 CONFD = "ganeti-confd"
120 MASTERD = "ganeti-masterd"
122 MULTITHREADED_DAEMONS = frozenset([MASTERD])
125 # daemon-name: (default-cert-path, default-key-path)
126 NODED: (SSL_CERT_FILE, SSL_CERT_FILE),
127 RAPI: (RAPI_CERT_FILE, RAPI_CERT_FILE),
131 # daemon-name: ("proto", "default-port")
132 NODED: ("tcp", 1811),
133 CONFD: ("udp", 1814),
136 DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
137 DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
138 DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
140 FIRST_DRBD_PORT = 11000
141 LAST_DRBD_PORT = 14999
142 MASTER_SCRIPT = "ganeti-master"
144 LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/"
146 # "daemon-name": "logfile"
147 NODED: LOG_DIR + "node-daemon.log",
148 CONFD: LOG_DIR + "conf-daemon.log",
149 RAPI: LOG_DIR + "rapi-daemon.log",
150 MASTERD: LOG_DIR + "master-daemon.log",
152 LOG_OS_DIR = LOG_DIR + "os"
153 LOG_WATCHER = LOG_DIR + "watcher.log"
154 LOG_COMMANDS = LOG_DIR + "commands.log"
155 LOG_BURNIN = LOG_DIR + "burnin.log"
157 OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH
158 EXPORT_DIR = _autoconf.EXPORT_DIR
160 EXPORT_CONF_FILE = "config.ini"
162 XEN_KERNEL = _autoconf.XEN_KERNEL
163 XEN_INITRD = _autoconf.XEN_INITRD
165 KVM_PATH = _autoconf.KVM_PATH
166 SOCAT_PATH = _autoconf.SOCAT_PATH
167 KVM_MIGRATION_PORT = _autoconf.KVM_MIGRATION_PORT
169 VALUE_DEFAULT = "default"
171 VALUE_GENERATE = "generate"
174 VALUE_FALSE = "false"
176 # hooks-related constants
177 HOOKS_BASE_DIR = CONF_DIR + "/hooks"
178 HOOKS_PHASE_PRE = "pre"
179 HOOKS_PHASE_POST = "post"
180 HOOKS_NAME_CFGUPDATE = "config-update"
183 # hooks subject type (what object type does the LU deal with)
184 HTYPE_CLUSTER = "CLUSTER"
186 HTYPE_INSTANCE = "INSTANCE"
202 SF_ALLOCATABLE = "allocatable"
205 SO_FIX_CONSISTENCY = "fix-consistency"
207 # Available fields per storage type
208 VALID_STORAGE_FIELDS = {
209 ST_FILE: frozenset([SF_NAME, SF_USED, SF_FREE]),
210 ST_LVM_PV: frozenset([SF_NAME, SF_SIZE, SF_USED, SF_FREE, SF_ALLOCATABLE]),
211 ST_LVM_VG: frozenset([SF_NAME, SF_SIZE]),
214 MODIFIABLE_STORAGE_FIELDS = {
215 ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
218 VALID_STORAGE_OPERATIONS = {
219 ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
223 # Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
226 LDS_FAULTY) = range(1, 4)
228 # disk template types
229 DT_DISKLESS = "diskless"
234 # the set of network-mirrored disk templates
235 DTS_NET_MIRROR = frozenset([DT_DRBD8])
237 # the set of non-lvm-based disk templates
238 DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE])
244 LDS_BLOCK = frozenset([LD_LV, LD_DRBD8])
247 DRBD_HMAC_ALG = "md5"
248 DRBD_NET_PROTOCOL = "C"
250 # file backend driver
254 # the set of drbd-like disk types
255 LDS_DRBD = frozenset([LD_DRBD8])
260 DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])
262 # disk replacement mode
263 REPLACE_DISK_PRI = "replace_on_primary" # replace disks on primary
264 REPLACE_DISK_SEC = "replace_on_secondary" # replace disks on secondary
265 REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
266 REPLACE_DISK_AUTO = "replace_auto"
268 # lock recalculate mode
269 LOCKS_REPLACE = 'replace'
270 LOCKS_APPEND = 'append'
272 # instance creation modes
273 INSTANCE_CREATE = "create"
274 INSTANCE_IMPORT = "import"
276 DISK_TEMPLATES = frozenset([DT_DISKLESS, DT_PLAIN,
279 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
281 # import/export config options
282 INISECT_EXP = "export"
283 INISECT_INS = "instance"
285 # dynamic device modification
288 DDM_REMOVE = 'remove'
295 EXIT_NODESETUP_ERROR = 12
296 EXIT_CONFIRMATION = 13 # need user confirmation
297 EXIT_NOTCANDIDATE = 14
300 TAG_CLUSTER = "cluster"
302 TAG_INSTANCE = "instance"
304 MAX_TAGS_PER_OBJ = 4096
307 DEFAULT_BRIDGE = "xen-br0"
308 SYNC_SPEED = 60 * 1024
309 LOCALHOST_IP_ADDRESS = "127.0.0.1"
310 TCP_PING_TIMEOUT = 10
311 GANETI_RUNAS = "root"
313 BIND_ADDRESS_GLOBAL = "0.0.0.0"
315 DEFAULT_MAC_PREFIX = "aa:00:00"
316 LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT
320 RPC_ENCODING_ZLIB_BASE64) = range(2)
322 # os related constants
323 OS_SCRIPT_CREATE = 'create'
324 OS_SCRIPT_IMPORT = 'import'
325 OS_SCRIPT_EXPORT = 'export'
326 OS_SCRIPT_RENAME = 'rename'
327 OS_SCRIPTS = frozenset([OS_SCRIPT_CREATE, OS_SCRIPT_IMPORT,
328 OS_SCRIPT_EXPORT, OS_SCRIPT_RENAME])
331 SSH_INITD_SCRIPT = _autoconf.SSH_INITD_SCRIPT
332 SSH_CONFIG_DIR = "/etc/ssh/"
333 SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "ssh_host_dsa_key"
334 SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub"
335 SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "ssh_host_rsa_key"
336 SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub"
341 INSTANCE_REBOOT_SOFT = "soft"
342 INSTANCE_REBOOT_HARD = "hard"
343 INSTANCE_REBOOT_FULL = "full"
345 REBOOT_TYPES = frozenset([INSTANCE_REBOOT_SOFT,
346 INSTANCE_REBOOT_HARD,
347 INSTANCE_REBOOT_FULL])
349 VTYPE_STRING = 'string'
351 VTYPE_SIZE = 'size' # size, in MiBs
353 ENFORCEABLE_TYPES = frozenset([
360 # HV parameter names (global namespace)
361 HV_BOOT_ORDER = "boot_order"
362 HV_CDROM_IMAGE_PATH = "cdrom_image_path"
363 HV_NIC_TYPE = "nic_type"
364 HV_DISK_TYPE = "disk_type"
365 HV_VNC_BIND_ADDRESS = "vnc_bind_address"
366 HV_VNC_TLS = "vnc_tls"
367 HV_VNC_X509 = "vnc_x509_path"
368 HV_VNC_X509_VERIFY = "vnc_x509_verify"
371 HV_KERNEL_ARGS = "kernel_args"
372 HV_KERNEL_PATH = "kernel_path"
373 HV_INITRD_PATH = "initrd_path"
374 HV_ROOT_PATH = "root_path"
375 HV_SERIAL_CONSOLE = "serial_console"
376 HV_USB_MOUSE = "usb_mouse"
377 HV_DEVICE_MODEL = "device_model"
378 HV_INIT_SCRIPT = "init_script"
380 HVS_PARAMETER_TYPES = {
381 HV_BOOT_ORDER: VTYPE_STRING,
382 HV_CDROM_IMAGE_PATH: VTYPE_STRING,
383 HV_NIC_TYPE: VTYPE_STRING,
384 HV_DISK_TYPE: VTYPE_STRING,
385 HV_VNC_BIND_ADDRESS: VTYPE_STRING,
386 HV_VNC_TLS: VTYPE_BOOL,
387 HV_VNC_X509: VTYPE_STRING,
388 HV_VNC_X509_VERIFY: VTYPE_BOOL,
391 HV_KERNEL_PATH: VTYPE_STRING,
392 HV_KERNEL_ARGS: VTYPE_STRING,
393 HV_INITRD_PATH: VTYPE_STRING,
394 HV_ROOT_PATH: VTYPE_STRING,
395 HV_SERIAL_CONSOLE: VTYPE_BOOL,
396 HV_USB_MOUSE: VTYPE_STRING,
397 HV_DEVICE_MODEL: VTYPE_STRING,
398 HV_INIT_SCRIPT: VTYPE_STRING,
401 HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
406 BE_AUTO_BALANCE = "auto_balance"
408 BES_PARAMETER_TYPES = {
409 BE_MEMORY: VTYPE_SIZE,
411 BE_AUTO_BALANCE: VTYPE_BOOL,
414 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
416 # Instance Parameters Profile
417 PP_DEFAULT = "default"
422 NIC_MODE_BRIDGED = "bridged"
423 NIC_MODE_ROUTED = "routed"
425 NIC_VALID_MODES = frozenset([NIC_MODE_BRIDGED, NIC_MODE_ROUTED])
427 NICS_PARAMETER_TYPES = {
428 NIC_MODE: VTYPE_STRING,
429 NIC_LINK: VTYPE_STRING,
432 NICS_PARAMETERS = frozenset(NICS_PARAMETER_TYPES.keys())
434 # Hypervisor constants
435 HT_XEN_PVM = "xen-pvm"
437 HT_XEN_HVM = "xen-hvm"
440 HYPER_TYPES = frozenset([HT_XEN_PVM, HT_FAKE, HT_XEN_HVM, HT_KVM, HT_CHROOT])
441 HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM])
444 VNC_PASSWORD_FILE = CONF_DIR + "/vnc-cluster-password"
445 VNC_DEFAULT_BIND_ADDRESS = '0.0.0.0'
448 HT_NIC_RTL8139 = "rtl8139"
449 HT_NIC_NE2K_PCI = "ne2k_pci"
450 HT_NIC_NE2K_ISA = "ne2k_isa"
451 HT_NIC_I82551 = "i82551"
452 HT_NIC_I85557B = "i82557b"
453 HT_NIC_I8259ER = "i82559er"
454 HT_NIC_PCNET = "pcnet"
455 HT_NIC_E1000 = "e1000"
456 HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual"
458 HT_HVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
459 HT_NIC_NE2K_ISA, HT_NIC_PARAVIRTUAL])
460 HT_KVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI,
461 HT_NIC_NE2K_ISA, HT_NIC_I82551,
462 HT_NIC_I85557B, HT_NIC_I8259ER,
463 HT_NIC_PCNET, HT_NIC_E1000,
466 HT_DISK_IOEMU = "ioemu"
468 HT_DISK_SCSI = "scsi"
471 HT_DISK_PFLASH = "pflash"
473 HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU])
474 HT_KVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IDE,
475 HT_DISK_SCSI, HT_DISK_SD, HT_DISK_MTD,
479 HT_MOUSE_MOUSE = "mouse"
480 HT_MOUSE_TABLET = "tablet"
482 HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET])
485 HT_BO_CDROM = "cdrom"
487 HT_BO_NETWORK = "network"
489 HT_KVM_VALID_BO_TYPES = frozenset([HT_BO_CDROM, HT_BO_DISK, HT_BO_NETWORK])
491 # Cluster Verify steps
492 VERIFY_NPLUSONE_MEM = 'nplusone_mem'
493 VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM])
495 # Node verify constants
496 NV_FILELIST = "filelist"
498 NV_HYPERVISOR = "hypervisor"
499 NV_INSTANCELIST = "instancelist"
501 NV_NODELIST = "nodelist"
502 NV_NODENETTEST = "node-net-test"
503 NV_VERSION = "version"
505 NV_DRBDLIST = "drbd-list"
507 # Allocator framework constants
508 IALLOCATOR_VERSION = 2
509 IALLOCATOR_DIR_IN = "in"
510 IALLOCATOR_DIR_OUT = "out"
511 IALLOCATOR_MODE_ALLOC = "allocate"
512 IALLOCATOR_MODE_RELOC = "relocate"
513 IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH
516 JOB_QUEUE_VERSION = 1
517 JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock"
518 JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version"
519 JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial"
520 JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive"
521 JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain"
522 JOB_QUEUE_SIZE_HARD_LIMIT = 5000
523 JOB_QUEUE_SIZE_SOFT_LIMIT = JOB_QUEUE_SIZE_HARD_LIMIT * 0.8
525 JOB_ID_TEMPLATE = r"\d+"
527 # unchanged job return
528 JOB_NOTCHANGED = "nochange"
531 JOB_STATUS_QUEUED = "queued"
532 JOB_STATUS_WAITLOCK = "waiting"
533 JOB_STATUS_CANCELING = "canceling"
534 JOB_STATUS_RUNNING = "running"
535 JOB_STATUS_CANCELED = "canceled"
536 JOB_STATUS_SUCCESS = "success"
537 JOB_STATUS_ERROR = "error"
541 OP_STATUS_QUEUED = "queued"
542 OP_STATUS_WAITLOCK = "waiting"
543 OP_STATUS_CANCELING = "canceling"
544 OP_STATUS_RUNNING = "running"
546 OP_STATUS_CANCELED = "canceled"
547 OP_STATUS_SUCCESS = "success"
548 OP_STATUS_ERROR = "error"
549 OPS_FINALIZED = frozenset([OP_STATUS_CANCELED,
553 # Execution log types
554 ELOG_MESSAGE = "message"
555 ELOG_PROGRESS = "progress"
557 # max dynamic devices
562 SS_CLUSTER_NAME = "cluster_name"
563 SS_CLUSTER_TAGS = "cluster_tags"
564 SS_FILE_STORAGE_DIR = "file_storage_dir"
565 SS_MASTER_CANDIDATES = "master_candidates"
566 SS_MASTER_CANDIDATES_IPS = "master_candidates_ips"
567 SS_MASTER_IP = "master_ip"
568 SS_MASTER_NETDEV = "master_netdev"
569 SS_MASTER_NODE = "master_node"
570 SS_NODE_LIST = "node_list"
571 SS_NODE_PRIMARY_IPS = "node_primary_ips"
572 SS_NODE_SECONDARY_IPS = "node_secondary_ips"
573 SS_OFFLINE_NODES = "offline_nodes"
574 SS_ONLINE_NODES = "online_nodes"
575 SS_INSTANCE_LIST = "instance_list"
576 SS_RELEASE_VERSION = "release_version"
578 # cluster wide default parameters
579 DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM
583 HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU",
585 HV_ROOT_PATH: '/dev/sda1',
586 HV_KERNEL_ARGS: 'ro',
590 HV_CDROM_IMAGE_PATH: '',
591 HV_NIC_TYPE: HT_NIC_RTL8139,
592 HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
593 HV_VNC_BIND_ADDRESS: '0.0.0.0',
596 HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader",
597 HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm",
600 HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU",
602 HV_KERNEL_ARGS: 'ro',
603 HV_ROOT_PATH: '/dev/vda1',
605 HV_SERIAL_CONSOLE: True,
606 HV_VNC_BIND_ADDRESS: '',
609 HV_VNC_X509_VERIFY: False,
610 HV_CDROM_IMAGE_PATH: '',
611 HV_BOOT_ORDER: HT_BO_DISK,
612 HV_NIC_TYPE: HT_NIC_PARAVIRTUAL,
613 HV_DISK_TYPE: HT_DISK_PARAVIRTUAL,
619 HV_INIT_SCRIPT: "/ganeti-chroot",
626 BE_AUTO_BALANCE: True,
630 NIC_MODE: NIC_MODE_BRIDGED,
631 NIC_LINK: DEFAULT_BRIDGE,
634 MASTER_POOL_SIZE_DEFAULT = 10
636 CONFD_PROTOCOL_VERSION = 1
639 CONFD_REQ_NODE_ROLE_BYNAME = 1
640 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP = 2
641 CONFD_REQ_CLUSTER_MASTER = 3
642 CONFD_REQ_NODE_PIP_LIST = 4
643 CONFD_REQ_MC_PIP_LIST = 5
645 CONFD_REQS = frozenset([
647 CONFD_REQ_NODE_ROLE_BYNAME,
648 CONFD_REQ_NODE_PIP_BY_INSTANCE_IP,
649 CONFD_REQ_CLUSTER_MASTER,
650 CONFD_REQ_NODE_PIP_LIST,
651 CONFD_REQ_MC_PIP_LIST,
654 CONFD_REPL_STATUS_OK = 0
655 CONFD_REPL_STATUS_ERROR = 1
656 CONFD_REPL_STATUS_NOTIMPLEMENTED = 2
658 CONFD_REPL_STATUSES = frozenset([
659 CONFD_REPL_STATUS_OK,
660 CONFD_REPL_STATUS_ERROR,
661 CONFD_REPL_STATUS_NOTIMPLEMENTED,
664 (CONFD_NODE_ROLE_MASTER,
665 CONFD_NODE_ROLE_CANDIDATE,
666 CONFD_NODE_ROLE_OFFLINE,
667 CONFD_NODE_ROLE_DRAINED,
668 CONFD_NODE_ROLE_REGULAR,
671 # A few common errors for confd
672 CONFD_ERROR_UNKNOWN_ENTRY = 1
673 CONFD_ERROR_INTERNAL = 2
675 # Each request is "salted" by the current timestamp.
676 # This constants decides how many seconds of skew to accept.
677 # TODO: make this a default and allow the value to be more configurable
678 CONFD_MAX_CLOCK_SKEW = 300
680 # When we haven't reloaded the config for more than this amount of seconds, we
681 # force a test to see if inotify is betraying us.
682 CONFD_CONFIG_RELOAD_TIMEOUT = 60
684 # If we receive more than one update in this amount of seconds, we move to
685 # polling every RATELIMIT seconds, rather than relying on inotify, to be able
686 # to serve more requests.
687 CONFD_CONFIG_RELOAD_RATELIMIT = 2
689 # Magic number prepended to all confd queries.
690 # This allows us to distinguish different types of confd protocols and handle
691 # them. For example by changing this we can move the whole payload to be
692 # compressed, or move away from json.
693 CONFD_MAGIC_FOURCC = 'plj0'
695 # By default a confd request is sent to the minimum between this number and all
696 # MCs. 6 was chosen because even in the case of a disastrous 50% response rate,
697 # we should have enough answers to be able to compare more than one.
698 CONFD_DEFAULT_REQ_COVERAGE = 6
700 # Timeout in seconds to expire pending query request in the confd client
701 # library. We don't actually expect any answer more than 10 seconds after we
703 CONFD_CLIENT_EXPIRE_TIMEOUT = 10
705 # Maximum UDP datagram size.
706 # On IPv4: 64K - 20 (ip header size) - 8 (udp header size) = 65507
707 # On IPv6: 64K - 40 (ip6 header size) - 8 (udp header size) = 65487
708 # (assuming we can't use jumbo frames)
709 # We just set this to 60K, which should be enough
710 MAX_UDP_DATA_SIZE = 61440