4 # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 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 """Configuration management for Ganeti
24 This module provides the interface to the Ganeti cluster configuration.
26 The configuration data is stored on every node but is updated on the master
27 only. After each update, the master distributes the data to the other nodes.
29 Currently, the data storage format is JSON. YAML was slow and consuming too
34 # pylint: disable=R0904
35 # R0904: Too many public methods
44 from ganeti import errors
45 from ganeti import locking
46 from ganeti import utils
47 from ganeti import constants
48 from ganeti import rpc
49 from ganeti import objects
50 from ganeti import serializer
51 from ganeti import uidpool
52 from ganeti import netutils
53 from ganeti import runtime
54 from ganeti import pathutils
55 from ganeti import network
58 _config_lock = locking.SharedLock("ConfigWriter")
60 # job id used for resource management at config upgrade time
61 _UPGRADE_CONFIG_JID = "jid-cfg-upgrade"
64 def _ValidateConfig(data):
65 """Verifies that a configuration objects looks valid.
67 This only verifies the version of the configuration.
69 @raise errors.ConfigurationError: if the version differs from what
73 if data.version != constants.CONFIG_VERSION:
74 raise errors.ConfigVersionMismatch(constants.CONFIG_VERSION, data.version)
77 class TemporaryReservationManager:
78 """A temporary resource reservation manager.
80 This is used to reserve resources in a job, before using them, making sure
81 other jobs cannot get them in the meantime.
85 self._ec_reserved = {}
87 def Reserved(self, resource):
88 for holder_reserved in self._ec_reserved.values():
89 if resource in holder_reserved:
93 def Reserve(self, ec_id, resource):
94 if self.Reserved(resource):
95 raise errors.ReservationError("Duplicate reservation for resource '%s'"
97 if ec_id not in self._ec_reserved:
98 self._ec_reserved[ec_id] = set([resource])
100 self._ec_reserved[ec_id].add(resource)
102 def DropECReservations(self, ec_id):
103 if ec_id in self._ec_reserved:
104 del self._ec_reserved[ec_id]
106 def GetReserved(self):
108 for holder_reserved in self._ec_reserved.values():
109 all_reserved.update(holder_reserved)
112 def GetECReserved(self, ec_id):
113 """ Used when you want to retrieve all reservations for a specific
114 execution context. E.g when commiting reserved IPs for a specific
119 if ec_id in self._ec_reserved:
120 ec_reserved.update(self._ec_reserved[ec_id])
123 def Generate(self, existing, generate_one_fn, ec_id):
124 """Generate a new resource of this type
127 assert callable(generate_one_fn)
129 all_elems = self.GetReserved()
130 all_elems.update(existing)
133 new_resource = generate_one_fn()
134 if new_resource is not None and new_resource not in all_elems:
137 raise errors.ConfigurationError("Not able generate new resource"
138 " (last tried: %s)" % new_resource)
139 self.Reserve(ec_id, new_resource)
143 def _MatchNameComponentIgnoreCase(short_name, names):
144 """Wrapper around L{utils.text.MatchNameComponent}.
147 return utils.MatchNameComponent(short_name, names, case_sensitive=False)
150 def _CheckInstanceDiskIvNames(disks):
151 """Checks if instance's disks' C{iv_name} attributes are in order.
153 @type disks: list of L{objects.Disk}
154 @param disks: List of disks
155 @rtype: list of tuples; (int, string, string)
156 @return: List of wrongly named disks, each tuple contains disk index,
157 expected and actual name
162 for (idx, disk) in enumerate(disks):
163 exp_iv_name = "disk/%s" % idx
164 if disk.iv_name != exp_iv_name:
165 result.append((idx, exp_iv_name, disk.iv_name))
171 """The interface to the cluster configuration.
173 @ivar _temporary_lvs: reservation manager for temporary LVs
174 @ivar _all_rms: a list of all temporary reservation managers
177 def __init__(self, cfg_file=None, offline=False, _getents=runtime.GetEnts,
178 accept_foreign=False):
180 self._lock = _config_lock
181 self._config_data = None
182 self._offline = offline
184 self._cfg_file = pathutils.CLUSTER_CONF_FILE
186 self._cfg_file = cfg_file
187 self._getents = _getents
188 self._temporary_ids = TemporaryReservationManager()
189 self._temporary_drbds = {}
190 self._temporary_macs = TemporaryReservationManager()
191 self._temporary_secrets = TemporaryReservationManager()
192 self._temporary_lvs = TemporaryReservationManager()
193 self._temporary_ips = TemporaryReservationManager()
194 self._all_rms = [self._temporary_ids, self._temporary_macs,
195 self._temporary_secrets, self._temporary_lvs,
197 # Note: in order to prevent errors when resolving our name in
198 # _DistributeConfig, we compute it here once and reuse it; it's
199 # better to raise an error before starting to modify the config
200 # file than after it was modified
201 self._my_hostname = netutils.Hostname.GetSysName()
202 self._last_cluster_serial = -1
205 self._OpenConfig(accept_foreign)
207 def _GetRpc(self, address_list):
208 """Returns RPC runner for configuration.
211 return rpc.ConfigRunner(self._context, address_list)
213 def SetContext(self, context):
214 """Sets Ganeti context.
217 self._context = context
219 # this method needs to be static, so that we can call it on the class
222 """Check if the cluster is configured.
225 return os.path.exists(pathutils.CLUSTER_CONF_FILE)
227 @locking.ssynchronized(_config_lock, shared=1)
228 def GetNdParams(self, node):
229 """Get the node params populated with cluster defaults.
231 @type node: L{objects.Node}
232 @param node: The node we want to know the params for
233 @return: A dict with the filled in node params
236 nodegroup = self._UnlockedGetNodeGroup(node.group)
237 return self._config_data.cluster.FillND(node, nodegroup)
239 @locking.ssynchronized(_config_lock, shared=1)
240 def GetInstanceDiskParams(self, instance):
241 """Get the disk params populated with inherit chain.
243 @type instance: L{objects.Instance}
244 @param instance: The instance we want to know the params for
245 @return: A dict with the filled in disk params
248 node = self._UnlockedGetNodeInfo(instance.primary_node)
249 nodegroup = self._UnlockedGetNodeGroup(node.group)
250 return self._UnlockedGetGroupDiskParams(nodegroup)
252 @locking.ssynchronized(_config_lock, shared=1)
253 def GetGroupDiskParams(self, group):
254 """Get the disk params populated with inherit chain.
256 @type group: L{objects.NodeGroup}
257 @param group: The group we want to know the params for
258 @return: A dict with the filled in disk params
261 return self._UnlockedGetGroupDiskParams(group)
263 def _UnlockedGetGroupDiskParams(self, group):
264 """Get the disk params populated with inherit chain down to node-group.
266 @type group: L{objects.NodeGroup}
267 @param group: The group we want to know the params for
268 @return: A dict with the filled in disk params
271 return self._config_data.cluster.SimpleFillDP(group.diskparams)
273 def _UnlockedGetNetworkMACPrefix(self, net_uuid):
274 """Return the network mac prefix if it exists or the cluster level default.
279 nobj = self._UnlockedGetNetwork(net_uuid)
281 prefix = nobj.mac_prefix
285 def _GenerateOneMAC(self, prefix=None):
286 """Return a function that randomly generates a MAC suffic
287 and appends it to the given prefix. If prefix is not given get
288 the cluster level default.
292 prefix = self._config_data.cluster.mac_prefix
295 byte1 = random.randrange(0, 256)
296 byte2 = random.randrange(0, 256)
297 byte3 = random.randrange(0, 256)
298 mac = "%s:%02x:%02x:%02x" % (prefix, byte1, byte2, byte3)
303 @locking.ssynchronized(_config_lock, shared=1)
304 def GenerateMAC(self, net_uuid, ec_id):
305 """Generate a MAC for an instance.
307 This should check the current instances for duplicates.
310 existing = self._AllMACs()
311 prefix = self._UnlockedGetNetworkMACPrefix(net_uuid)
312 gen_mac = self._GenerateOneMAC(prefix)
313 return self._temporary_ids.Generate(existing, gen_mac, ec_id)
315 @locking.ssynchronized(_config_lock, shared=1)
316 def ReserveMAC(self, mac, ec_id):
317 """Reserve a MAC for an instance.
319 This only checks instances managed by this cluster, it does not
320 check for potential collisions elsewhere.
323 all_macs = self._AllMACs()
325 raise errors.ReservationError("mac already in use")
327 self._temporary_macs.Reserve(ec_id, mac)
329 def _UnlockedCommitTemporaryIps(self, ec_id):
330 """Commit all reserved IP address to their respective pools
333 for action, address, net_uuid in self._temporary_ips.GetECReserved(ec_id):
334 self._UnlockedCommitIp(action, net_uuid, address)
336 def _UnlockedCommitIp(self, action, net_uuid, address):
337 """Commit a reserved IP address to an IP pool.
339 The IP address is taken from the network's IP pool and marked as reserved.
342 nobj = self._UnlockedGetNetwork(net_uuid)
343 pool = network.AddressPool(nobj)
344 if action == constants.RESERVE_ACTION:
345 pool.Reserve(address)
346 elif action == constants.RELEASE_ACTION:
347 pool.Release(address)
349 def _UnlockedReleaseIp(self, net_uuid, address, ec_id):
350 """Give a specific IP address back to an IP pool.
352 The IP address is returned to the IP pool designated by pool_id and marked
356 self._temporary_ips.Reserve(ec_id,
357 (constants.RELEASE_ACTION, address, net_uuid))
359 @locking.ssynchronized(_config_lock, shared=1)
360 def ReleaseIp(self, net_uuid, address, ec_id):
361 """Give a specified IP address back to an IP pool.
363 This is just a wrapper around _UnlockedReleaseIp.
367 self._UnlockedReleaseIp(net_uuid, address, ec_id)
369 @locking.ssynchronized(_config_lock, shared=1)
370 def GenerateIp(self, net_uuid, ec_id):
371 """Find a free IPv4 address for an instance.
374 nobj = self._UnlockedGetNetwork(net_uuid)
375 pool = network.AddressPool(nobj)
379 ip = pool.GenerateFree()
380 except errors.AddressPoolError:
381 raise errors.ReservationError("Cannot generate IP. Network is full")
382 return (constants.RESERVE_ACTION, ip, net_uuid)
384 _, address, _ = self._temporary_ips.Generate([], gen_one, ec_id)
387 def _UnlockedReserveIp(self, net_uuid, address, ec_id):
388 """Reserve a given IPv4 address for use by an instance.
391 nobj = self._UnlockedGetNetwork(net_uuid)
392 pool = network.AddressPool(nobj)
394 isreserved = pool.IsReserved(address)
395 except errors.AddressPoolError:
396 raise errors.ReservationError("IP address not in network")
398 raise errors.ReservationError("IP address already in use")
400 return self._temporary_ips.Reserve(ec_id,
401 (constants.RESERVE_ACTION,
404 @locking.ssynchronized(_config_lock, shared=1)
405 def ReserveIp(self, net_uuid, address, ec_id):
406 """Reserve a given IPv4 address for use by an instance.
410 return self._UnlockedReserveIp(net_uuid, address, ec_id)
412 @locking.ssynchronized(_config_lock, shared=1)
413 def ReserveLV(self, lv_name, ec_id):
414 """Reserve an VG/LV pair for an instance.
416 @type lv_name: string
417 @param lv_name: the logical volume name to reserve
420 all_lvs = self._AllLVs()
421 if lv_name in all_lvs:
422 raise errors.ReservationError("LV already in use")
424 self._temporary_lvs.Reserve(ec_id, lv_name)
426 @locking.ssynchronized(_config_lock, shared=1)
427 def GenerateDRBDSecret(self, ec_id):
428 """Generate a DRBD secret.
430 This checks the current disks for duplicates.
433 return self._temporary_secrets.Generate(self._AllDRBDSecrets(),
434 utils.GenerateSecret,
438 """Compute the list of all LVs.
442 for instance in self._config_data.instances.values():
443 node_data = instance.MapLVsByNode()
444 for lv_list in node_data.values():
445 lvnames.update(lv_list)
449 """Compute the list of all Disks (recursively, including children).
452 def DiskAndAllChildren(disk):
453 """Returns a list containing the given disk and all of his children.
458 for child_disk in disk.children:
459 disks.extend(DiskAndAllChildren(child_disk))
463 for instance in self._config_data.instances.values():
464 for disk in instance.disks:
465 disks.extend(DiskAndAllChildren(disk))
469 """Compute the list of all NICs.
473 for instance in self._config_data.instances.values():
474 nics.extend(instance.nics)
477 def _AllIDs(self, include_temporary):
478 """Compute the list of all UUIDs and names we have.
480 @type include_temporary: boolean
481 @param include_temporary: whether to include the _temporary_ids set
483 @return: a set of IDs
487 if include_temporary:
488 existing.update(self._temporary_ids.GetReserved())
489 existing.update(self._AllLVs())
490 existing.update(self._config_data.instances.keys())
491 existing.update(self._config_data.nodes.keys())
492 existing.update([i.uuid for i in self._AllUUIDObjects() if i.uuid])
495 def _GenerateUniqueID(self, ec_id):
496 """Generate an unique UUID.
498 This checks the current node, instances and disk names for
502 @return: the unique id
505 existing = self._AllIDs(include_temporary=False)
506 return self._temporary_ids.Generate(existing, utils.NewUUID, ec_id)
508 @locking.ssynchronized(_config_lock, shared=1)
509 def GenerateUniqueID(self, ec_id):
510 """Generate an unique ID.
512 This is just a wrapper over the unlocked version.
515 @param ec_id: unique id for the job to reserve the id to
518 return self._GenerateUniqueID(ec_id)
521 """Return all MACs present in the config.
524 @return: the list of all MACs
528 for instance in self._config_data.instances.values():
529 for nic in instance.nics:
530 result.append(nic.mac)
534 def _AllDRBDSecrets(self):
535 """Return all DRBD secrets present in the config.
538 @return: the list of all DRBD secrets
541 def helper(disk, result):
542 """Recursively gather secrets from this disk."""
543 if disk.dev_type == constants.DT_DRBD8:
544 result.append(disk.logical_id[5])
546 for child in disk.children:
547 helper(child, result)
550 for instance in self._config_data.instances.values():
551 for disk in instance.disks:
556 def _CheckDiskIDs(self, disk, l_ids, p_ids):
557 """Compute duplicate disk IDs
559 @type disk: L{objects.Disk}
560 @param disk: the disk at which to start searching
562 @param l_ids: list of current logical ids
564 @param p_ids: list of current physical ids
566 @return: a list of error messages
570 if disk.logical_id is not None:
571 if disk.logical_id in l_ids:
572 result.append("duplicate logical id %s" % str(disk.logical_id))
574 l_ids.append(disk.logical_id)
575 if disk.physical_id is not None:
576 if disk.physical_id in p_ids:
577 result.append("duplicate physical id %s" % str(disk.physical_id))
579 p_ids.append(disk.physical_id)
582 for child in disk.children:
583 result.extend(self._CheckDiskIDs(child, l_ids, p_ids))
586 def _UnlockedVerifyConfig(self):
590 @return: a list of error messages; a non-empty list signifies
594 # pylint: disable=R0914
598 data = self._config_data
599 cluster = data.cluster
603 # global cluster checks
604 if not cluster.enabled_hypervisors:
605 result.append("enabled hypervisors list doesn't have any entries")
606 invalid_hvs = set(cluster.enabled_hypervisors) - constants.HYPER_TYPES
608 result.append("enabled hypervisors contains invalid entries: %s" %
609 utils.CommaJoin(invalid_hvs))
610 missing_hvp = (set(cluster.enabled_hypervisors) -
611 set(cluster.hvparams.keys()))
613 result.append("hypervisor parameters missing for the enabled"
614 " hypervisor(s) %s" % utils.CommaJoin(missing_hvp))
616 if not cluster.enabled_disk_templates:
617 result.append("enabled disk templates list doesn't have any entries")
618 invalid_disk_templates = set(cluster.enabled_disk_templates) \
619 - constants.DISK_TEMPLATES
620 if invalid_disk_templates:
621 result.append("enabled disk templates list contains invalid entries:"
622 " %s" % utils.CommaJoin(invalid_disk_templates))
624 if cluster.master_node not in data.nodes:
625 result.append("cluster has invalid primary node '%s'" %
628 def _helper(owner, attr, value, template):
630 utils.ForceDictType(value, template)
631 except errors.GenericError, err:
632 result.append("%s has invalid %s: %s" % (owner, attr, err))
634 def _helper_nic(owner, params):
636 objects.NIC.CheckParameterSyntax(params)
637 except errors.ConfigurationError, err:
638 result.append("%s has invalid nicparams: %s" % (owner, err))
640 def _helper_ipolicy(owner, ipolicy, iscluster):
642 objects.InstancePolicy.CheckParameterSyntax(ipolicy, iscluster)
643 except errors.ConfigurationError, err:
644 result.append("%s has invalid instance policy: %s" % (owner, err))
645 for key, value in ipolicy.items():
646 if key == constants.ISPECS_MINMAX:
647 for k in range(len(value)):
648 _helper_ispecs(owner, "ipolicy/%s[%s]" % (key, k), value[k])
649 elif key == constants.ISPECS_STD:
650 _helper(owner, "ipolicy/" + key, value,
651 constants.ISPECS_PARAMETER_TYPES)
653 # FIXME: assuming list type
654 if key in constants.IPOLICY_PARAMETERS:
658 if not isinstance(value, exp_type):
659 result.append("%s has invalid instance policy: for %s,"
660 " expecting %s, got %s" %
661 (owner, key, exp_type.__name__, type(value)))
663 def _helper_ispecs(owner, parentkey, params):
664 for (key, value) in params.items():
665 fullkey = "/".join([parentkey, key])
666 _helper(owner, fullkey, value, constants.ISPECS_PARAMETER_TYPES)
668 # check cluster parameters
669 _helper("cluster", "beparams", cluster.SimpleFillBE({}),
670 constants.BES_PARAMETER_TYPES)
671 _helper("cluster", "nicparams", cluster.SimpleFillNIC({}),
672 constants.NICS_PARAMETER_TYPES)
673 _helper_nic("cluster", cluster.SimpleFillNIC({}))
674 _helper("cluster", "ndparams", cluster.SimpleFillND({}),
675 constants.NDS_PARAMETER_TYPES)
676 _helper_ipolicy("cluster", cluster.ipolicy, True)
678 # per-instance checks
679 for instance_name in data.instances:
680 instance = data.instances[instance_name]
681 if instance.name != instance_name:
682 result.append("instance '%s' is indexed by wrong name '%s'" %
683 (instance.name, instance_name))
684 if instance.primary_node not in data.nodes:
685 result.append("instance '%s' has invalid primary node '%s'" %
686 (instance_name, instance.primary_node))
687 for snode in instance.secondary_nodes:
688 if snode not in data.nodes:
689 result.append("instance '%s' has invalid secondary node '%s'" %
690 (instance_name, snode))
691 for idx, nic in enumerate(instance.nics):
692 if nic.mac in seen_macs:
693 result.append("instance '%s' has NIC %d mac %s duplicate" %
694 (instance_name, idx, nic.mac))
696 seen_macs.append(nic.mac)
698 filled = cluster.SimpleFillNIC(nic.nicparams)
699 owner = "instance %s nic %d" % (instance.name, idx)
700 _helper(owner, "nicparams",
701 filled, constants.NICS_PARAMETER_TYPES)
702 _helper_nic(owner, filled)
704 # disk template checks
705 if not instance.disk_template in data.cluster.enabled_disk_templates:
706 result.append("instance '%s' uses the disabled disk template '%s'." %
707 (instance_name, instance.disk_template))
710 if instance.beparams:
711 _helper("instance %s" % instance.name, "beparams",
712 cluster.FillBE(instance), constants.BES_PARAMETER_TYPES)
714 # gather the drbd ports for duplicate checks
715 for (idx, dsk) in enumerate(instance.disks):
716 if dsk.dev_type in constants.LDS_DRBD:
717 tcp_port = dsk.logical_id[2]
718 if tcp_port not in ports:
720 ports[tcp_port].append((instance.name, "drbd disk %s" % idx))
721 # gather network port reservation
722 net_port = getattr(instance, "network_port", None)
723 if net_port is not None:
724 if net_port not in ports:
726 ports[net_port].append((instance.name, "network port"))
728 # instance disk verify
729 for idx, disk in enumerate(instance.disks):
730 result.extend(["instance '%s' disk %d error: %s" %
731 (instance.name, idx, msg) for msg in disk.Verify()])
732 result.extend(self._CheckDiskIDs(disk, seen_lids, seen_pids))
734 wrong_names = _CheckInstanceDiskIvNames(instance.disks)
736 tmp = "; ".join(("name of disk %s should be '%s', but is '%s'" %
737 (idx, exp_name, actual_name))
738 for (idx, exp_name, actual_name) in wrong_names)
740 result.append("Instance '%s' has wrongly named disks: %s" %
741 (instance.name, tmp))
743 # cluster-wide pool of free ports
744 for free_port in cluster.tcpudp_port_pool:
745 if free_port not in ports:
746 ports[free_port] = []
747 ports[free_port].append(("cluster", "port marked as free"))
749 # compute tcp/udp duplicate ports
755 txt = utils.CommaJoin(["%s/%s" % val for val in pdata])
756 result.append("tcp/udp port %s has duplicates: %s" % (pnum, txt))
758 # highest used tcp port check
760 if keys[-1] > cluster.highest_used_port:
761 result.append("Highest used port mismatch, saved %s, computed %s" %
762 (cluster.highest_used_port, keys[-1]))
764 if not data.nodes[cluster.master_node].master_candidate:
765 result.append("Master node is not a master candidate")
767 # master candidate checks
768 mc_now, mc_max, _ = self._UnlockedGetMasterCandidateStats()
770 result.append("Not enough master candidates: actual %d, target %d" %
774 for node_name, node in data.nodes.items():
775 if node.name != node_name:
776 result.append("Node '%s' is indexed by wrong name '%s'" %
777 (node.name, node_name))
778 if [node.master_candidate, node.drained, node.offline].count(True) > 1:
779 result.append("Node %s state is invalid: master_candidate=%s,"
780 " drain=%s, offline=%s" %
781 (node.name, node.master_candidate, node.drained,
783 if node.group not in data.nodegroups:
784 result.append("Node '%s' has invalid group '%s'" %
785 (node.name, node.group))
787 _helper("node %s" % node.name, "ndparams",
788 cluster.FillND(node, data.nodegroups[node.group]),
789 constants.NDS_PARAMETER_TYPES)
790 used_globals = constants.NDC_GLOBALS.intersection(node.ndparams)
792 result.append("Node '%s' has some global parameters set: %s" %
793 (node.name, utils.CommaJoin(used_globals)))
796 nodegroups_names = set()
797 for nodegroup_uuid in data.nodegroups:
798 nodegroup = data.nodegroups[nodegroup_uuid]
799 if nodegroup.uuid != nodegroup_uuid:
800 result.append("node group '%s' (uuid: '%s') indexed by wrong uuid '%s'"
801 % (nodegroup.name, nodegroup.uuid, nodegroup_uuid))
802 if utils.UUID_RE.match(nodegroup.name.lower()):
803 result.append("node group '%s' (uuid: '%s') has uuid-like name" %
804 (nodegroup.name, nodegroup.uuid))
805 if nodegroup.name in nodegroups_names:
806 result.append("duplicate node group name '%s'" % nodegroup.name)
808 nodegroups_names.add(nodegroup.name)
809 group_name = "group %s" % nodegroup.name
810 _helper_ipolicy(group_name, cluster.SimpleFillIPolicy(nodegroup.ipolicy),
812 if nodegroup.ndparams:
813 _helper(group_name, "ndparams",
814 cluster.SimpleFillND(nodegroup.ndparams),
815 constants.NDS_PARAMETER_TYPES)
818 _, duplicates = self._UnlockedComputeDRBDMap()
819 for node, minor, instance_a, instance_b in duplicates:
820 result.append("DRBD minor %d on node %s is assigned twice to instances"
821 " %s and %s" % (minor, node, instance_a, instance_b))
824 default_nicparams = cluster.nicparams[constants.PP_DEFAULT]
827 def _AddIpAddress(ip, name):
828 ips.setdefault(ip, []).append(name)
830 _AddIpAddress(cluster.master_ip, "cluster_ip")
832 for node in data.nodes.values():
833 _AddIpAddress(node.primary_ip, "node:%s/primary" % node.name)
834 if node.secondary_ip != node.primary_ip:
835 _AddIpAddress(node.secondary_ip, "node:%s/secondary" % node.name)
837 for instance in data.instances.values():
838 for idx, nic in enumerate(instance.nics):
842 nicparams = objects.FillDict(default_nicparams, nic.nicparams)
843 nic_mode = nicparams[constants.NIC_MODE]
844 nic_link = nicparams[constants.NIC_LINK]
846 if nic_mode == constants.NIC_MODE_BRIDGED:
847 link = "bridge:%s" % nic_link
848 elif nic_mode == constants.NIC_MODE_ROUTED:
849 link = "route:%s" % nic_link
851 raise errors.ProgrammerError("NIC mode '%s' not handled" % nic_mode)
853 _AddIpAddress("%s/%s/%s" % (link, nic.ip, nic.network),
854 "instance:%s/nic:%d" % (instance.name, idx))
856 for ip, owners in ips.items():
858 result.append("IP address %s is used by multiple owners: %s" %
859 (ip, utils.CommaJoin(owners)))
863 @locking.ssynchronized(_config_lock, shared=1)
864 def VerifyConfig(self):
867 This is just a wrapper over L{_UnlockedVerifyConfig}.
870 @return: a list of error messages; a non-empty list signifies
874 return self._UnlockedVerifyConfig()
876 def _UnlockedSetDiskID(self, disk, node_name):
877 """Convert the unique ID to the ID needed on the target nodes.
879 This is used only for drbd, which needs ip/port configuration.
881 The routine descends down and updates its children also, because
882 this helps when the only the top device is passed to the remote
885 This function is for internal use, when the config lock is already held.
889 for child in disk.children:
890 self._UnlockedSetDiskID(child, node_name)
892 if disk.logical_id is None and disk.physical_id is not None:
894 if disk.dev_type == constants.LD_DRBD8:
895 pnode, snode, port, pminor, sminor, secret = disk.logical_id
896 if node_name not in (pnode, snode):
897 raise errors.ConfigurationError("DRBD device not knowing node %s" %
899 pnode_info = self._UnlockedGetNodeInfo(pnode)
900 snode_info = self._UnlockedGetNodeInfo(snode)
901 if pnode_info is None or snode_info is None:
902 raise errors.ConfigurationError("Can't find primary or secondary node"
903 " for %s" % str(disk))
904 p_data = (pnode_info.secondary_ip, port)
905 s_data = (snode_info.secondary_ip, port)
906 if pnode == node_name:
907 disk.physical_id = p_data + s_data + (pminor, secret)
908 else: # it must be secondary, we tested above
909 disk.physical_id = s_data + p_data + (sminor, secret)
911 disk.physical_id = disk.logical_id
914 @locking.ssynchronized(_config_lock)
915 def SetDiskID(self, disk, node_name):
916 """Convert the unique ID to the ID needed on the target nodes.
918 This is used only for drbd, which needs ip/port configuration.
920 The routine descends down and updates its children also, because
921 this helps when the only the top device is passed to the remote
925 return self._UnlockedSetDiskID(disk, node_name)
927 @locking.ssynchronized(_config_lock)
928 def AddTcpUdpPort(self, port):
929 """Adds a new port to the available port pool.
931 @warning: this method does not "flush" the configuration (via
932 L{_WriteConfig}); callers should do that themselves once the
933 configuration is stable
936 if not isinstance(port, int):
937 raise errors.ProgrammerError("Invalid type passed for port")
939 self._config_data.cluster.tcpudp_port_pool.add(port)
941 @locking.ssynchronized(_config_lock, shared=1)
942 def GetPortList(self):
943 """Returns a copy of the current port list.
946 return self._config_data.cluster.tcpudp_port_pool.copy()
948 @locking.ssynchronized(_config_lock)
949 def AllocatePort(self):
952 The port will be taken from the available port pool or from the
953 default port range (and in this case we increase
957 # If there are TCP/IP ports configured, we use them first.
958 if self._config_data.cluster.tcpudp_port_pool:
959 port = self._config_data.cluster.tcpudp_port_pool.pop()
961 port = self._config_data.cluster.highest_used_port + 1
962 if port >= constants.LAST_DRBD_PORT:
963 raise errors.ConfigurationError("The highest used port is greater"
964 " than %s. Aborting." %
965 constants.LAST_DRBD_PORT)
966 self._config_data.cluster.highest_used_port = port
971 def _UnlockedComputeDRBDMap(self):
972 """Compute the used DRBD minor/nodes.
975 @return: dictionary of node_name: dict of minor: instance_name;
976 the returned dict will have all the nodes in it (even if with
977 an empty list), and a list of duplicates; if the duplicates
978 list is not empty, the configuration is corrupted and its caller
979 should raise an exception
982 def _AppendUsedPorts(instance_name, disk, used):
984 if disk.dev_type == constants.LD_DRBD8 and len(disk.logical_id) >= 5:
985 node_a, node_b, _, minor_a, minor_b = disk.logical_id[:5]
986 for node, port in ((node_a, minor_a), (node_b, minor_b)):
987 assert node in used, ("Node '%s' of instance '%s' not found"
988 " in node list" % (node, instance_name))
989 if port in used[node]:
990 duplicates.append((node, port, instance_name, used[node][port]))
992 used[node][port] = instance_name
994 for child in disk.children:
995 duplicates.extend(_AppendUsedPorts(instance_name, child, used))
999 my_dict = dict((node, {}) for node in self._config_data.nodes)
1000 for instance in self._config_data.instances.itervalues():
1001 for disk in instance.disks:
1002 duplicates.extend(_AppendUsedPorts(instance.name, disk, my_dict))
1003 for (node, minor), instance in self._temporary_drbds.iteritems():
1004 if minor in my_dict[node] and my_dict[node][minor] != instance:
1005 duplicates.append((node, minor, instance, my_dict[node][minor]))
1007 my_dict[node][minor] = instance
1008 return my_dict, duplicates
1010 @locking.ssynchronized(_config_lock)
1011 def ComputeDRBDMap(self):
1012 """Compute the used DRBD minor/nodes.
1014 This is just a wrapper over L{_UnlockedComputeDRBDMap}.
1016 @return: dictionary of node_name: dict of minor: instance_name;
1017 the returned dict will have all the nodes in it (even if with
1021 d_map, duplicates = self._UnlockedComputeDRBDMap()
1023 raise errors.ConfigurationError("Duplicate DRBD ports detected: %s" %
1027 @locking.ssynchronized(_config_lock)
1028 def AllocateDRBDMinor(self, nodes, instance):
1029 """Allocate a drbd minor.
1031 The free minor will be automatically computed from the existing
1032 devices. A node can be given multiple times in order to allocate
1033 multiple minors. The result is the list of minors, in the same
1034 order as the passed nodes.
1036 @type instance: string
1037 @param instance: the instance for which we allocate minors
1040 assert isinstance(instance, basestring), \
1041 "Invalid argument '%s' passed to AllocateDRBDMinor" % instance
1043 d_map, duplicates = self._UnlockedComputeDRBDMap()
1045 raise errors.ConfigurationError("Duplicate DRBD ports detected: %s" %
1049 ndata = d_map[nname]
1051 # no minors used, we can start at 0
1054 self._temporary_drbds[(nname, 0)] = instance
1058 ffree = utils.FirstFree(keys)
1060 # return the next minor
1061 # TODO: implement high-limit check
1062 minor = keys[-1] + 1
1065 # double-check minor against current instances
1066 assert minor not in d_map[nname], \
1067 ("Attempt to reuse allocated DRBD minor %d on node %s,"
1068 " already allocated to instance %s" %
1069 (minor, nname, d_map[nname][minor]))
1070 ndata[minor] = instance
1071 # double-check minor against reservation
1072 r_key = (nname, minor)
1073 assert r_key not in self._temporary_drbds, \
1074 ("Attempt to reuse reserved DRBD minor %d on node %s,"
1075 " reserved for instance %s" %
1076 (minor, nname, self._temporary_drbds[r_key]))
1077 self._temporary_drbds[r_key] = instance
1078 result.append(minor)
1079 logging.debug("Request to allocate drbd minors, input: %s, returning %s",
1083 def _UnlockedReleaseDRBDMinors(self, instance):
1084 """Release temporary drbd minors allocated for a given instance.
1086 @type instance: string
1087 @param instance: the instance for which temporary minors should be
1091 assert isinstance(instance, basestring), \
1092 "Invalid argument passed to ReleaseDRBDMinors"
1093 for key, name in self._temporary_drbds.items():
1094 if name == instance:
1095 del self._temporary_drbds[key]
1097 @locking.ssynchronized(_config_lock)
1098 def ReleaseDRBDMinors(self, instance):
1099 """Release temporary drbd minors allocated for a given instance.
1101 This should be called on the error paths, on the success paths
1102 it's automatically called by the ConfigWriter add and update
1105 This function is just a wrapper over L{_UnlockedReleaseDRBDMinors}.
1107 @type instance: string
1108 @param instance: the instance for which temporary minors should be
1112 self._UnlockedReleaseDRBDMinors(instance)
1114 @locking.ssynchronized(_config_lock, shared=1)
1115 def GetConfigVersion(self):
1116 """Get the configuration version.
1118 @return: Config version
1121 return self._config_data.version
1123 @locking.ssynchronized(_config_lock, shared=1)
1124 def GetClusterName(self):
1125 """Get cluster name.
1127 @return: Cluster name
1130 return self._config_data.cluster.cluster_name
1132 @locking.ssynchronized(_config_lock, shared=1)
1133 def GetMasterNode(self):
1134 """Get the hostname of the master node for this cluster.
1136 @return: Master hostname
1139 return self._config_data.cluster.master_node
1141 @locking.ssynchronized(_config_lock, shared=1)
1142 def GetMasterIP(self):
1143 """Get the IP of the master node for this cluster.
1148 return self._config_data.cluster.master_ip
1150 @locking.ssynchronized(_config_lock, shared=1)
1151 def GetMasterNetdev(self):
1152 """Get the master network device for this cluster.
1155 return self._config_data.cluster.master_netdev
1157 @locking.ssynchronized(_config_lock, shared=1)
1158 def GetMasterNetmask(self):
1159 """Get the netmask of the master node for this cluster.
1162 return self._config_data.cluster.master_netmask
1164 @locking.ssynchronized(_config_lock, shared=1)
1165 def GetUseExternalMipScript(self):
1166 """Get flag representing whether to use the external master IP setup script.
1169 return self._config_data.cluster.use_external_mip_script
1171 @locking.ssynchronized(_config_lock, shared=1)
1172 def GetFileStorageDir(self):
1173 """Get the file storage dir for this cluster.
1176 return self._config_data.cluster.file_storage_dir
1178 @locking.ssynchronized(_config_lock, shared=1)
1179 def GetSharedFileStorageDir(self):
1180 """Get the shared file storage dir for this cluster.
1183 return self._config_data.cluster.shared_file_storage_dir
1185 @locking.ssynchronized(_config_lock, shared=1)
1186 def GetHypervisorType(self):
1187 """Get the hypervisor type for this cluster.
1190 return self._config_data.cluster.enabled_hypervisors[0]
1192 @locking.ssynchronized(_config_lock, shared=1)
1193 def GetRsaHostKey(self):
1194 """Return the rsa hostkey from the config.
1197 @return: the rsa hostkey
1200 return self._config_data.cluster.rsahostkeypub
1202 @locking.ssynchronized(_config_lock, shared=1)
1203 def GetDsaHostKey(self):
1204 """Return the dsa hostkey from the config.
1207 @return: the dsa hostkey
1210 return self._config_data.cluster.dsahostkeypub
1212 @locking.ssynchronized(_config_lock, shared=1)
1213 def GetDefaultIAllocator(self):
1214 """Get the default instance allocator for this cluster.
1217 return self._config_data.cluster.default_iallocator
1219 @locking.ssynchronized(_config_lock, shared=1)
1220 def GetPrimaryIPFamily(self):
1221 """Get cluster primary ip family.
1223 @return: primary ip family
1226 return self._config_data.cluster.primary_ip_family
1228 @locking.ssynchronized(_config_lock, shared=1)
1229 def GetMasterNetworkParameters(self):
1230 """Get network parameters of the master node.
1232 @rtype: L{object.MasterNetworkParameters}
1233 @return: network parameters of the master node
1236 cluster = self._config_data.cluster
1237 result = objects.MasterNetworkParameters(
1238 name=cluster.master_node, ip=cluster.master_ip,
1239 netmask=cluster.master_netmask, netdev=cluster.master_netdev,
1240 ip_family=cluster.primary_ip_family)
1244 @locking.ssynchronized(_config_lock)
1245 def AddNodeGroup(self, group, ec_id, check_uuid=True):
1246 """Add a node group to the configuration.
1248 This method calls group.UpgradeConfig() to fill any missing attributes
1249 according to their default values.
1251 @type group: L{objects.NodeGroup}
1252 @param group: the NodeGroup object to add
1254 @param ec_id: unique id for the job to use when creating a missing UUID
1255 @type check_uuid: bool
1256 @param check_uuid: add an UUID to the group if it doesn't have one or, if
1257 it does, ensure that it does not exist in the
1258 configuration already
1261 self._UnlockedAddNodeGroup(group, ec_id, check_uuid)
1264 def _UnlockedAddNodeGroup(self, group, ec_id, check_uuid):
1265 """Add a node group to the configuration.
1268 logging.info("Adding node group %s to configuration", group.name)
1270 # Some code might need to add a node group with a pre-populated UUID
1271 # generated with ConfigWriter.GenerateUniqueID(). We allow them to bypass
1272 # the "does this UUID" exist already check.
1274 self._EnsureUUID(group, ec_id)
1277 existing_uuid = self._UnlockedLookupNodeGroup(group.name)
1278 except errors.OpPrereqError:
1281 raise errors.OpPrereqError("Desired group name '%s' already exists as a"
1282 " node group (UUID: %s)" %
1283 (group.name, existing_uuid),
1284 errors.ECODE_EXISTS)
1287 group.ctime = group.mtime = time.time()
1288 group.UpgradeConfig()
1290 self._config_data.nodegroups[group.uuid] = group
1291 self._config_data.cluster.serial_no += 1
1293 @locking.ssynchronized(_config_lock)
1294 def RemoveNodeGroup(self, group_uuid):
1295 """Remove a node group from the configuration.
1297 @type group_uuid: string
1298 @param group_uuid: the UUID of the node group to remove
1301 logging.info("Removing node group %s from configuration", group_uuid)
1303 if group_uuid not in self._config_data.nodegroups:
1304 raise errors.ConfigurationError("Unknown node group '%s'" % group_uuid)
1306 assert len(self._config_data.nodegroups) != 1, \
1307 "Group '%s' is the only group, cannot be removed" % group_uuid
1309 del self._config_data.nodegroups[group_uuid]
1310 self._config_data.cluster.serial_no += 1
1313 def _UnlockedLookupNodeGroup(self, target):
1314 """Lookup a node group's UUID.
1316 @type target: string or None
1317 @param target: group name or UUID or None to look for the default
1319 @return: nodegroup UUID
1320 @raises errors.OpPrereqError: when the target group cannot be found
1324 if len(self._config_data.nodegroups) != 1:
1325 raise errors.OpPrereqError("More than one node group exists. Target"
1326 " group must be specified explicitly.")
1328 return self._config_data.nodegroups.keys()[0]
1329 if target in self._config_data.nodegroups:
1331 for nodegroup in self._config_data.nodegroups.values():
1332 if nodegroup.name == target:
1333 return nodegroup.uuid
1334 raise errors.OpPrereqError("Node group '%s' not found" % target,
1337 @locking.ssynchronized(_config_lock, shared=1)
1338 def LookupNodeGroup(self, target):
1339 """Lookup a node group's UUID.
1341 This function is just a wrapper over L{_UnlockedLookupNodeGroup}.
1343 @type target: string or None
1344 @param target: group name or UUID or None to look for the default
1346 @return: nodegroup UUID
1349 return self._UnlockedLookupNodeGroup(target)
1351 def _UnlockedGetNodeGroup(self, uuid):
1352 """Lookup a node group.
1355 @param uuid: group UUID
1356 @rtype: L{objects.NodeGroup} or None
1357 @return: nodegroup object, or None if not found
1360 if uuid not in self._config_data.nodegroups:
1363 return self._config_data.nodegroups[uuid]
1365 @locking.ssynchronized(_config_lock, shared=1)
1366 def GetNodeGroup(self, uuid):
1367 """Lookup a node group.
1370 @param uuid: group UUID
1371 @rtype: L{objects.NodeGroup} or None
1372 @return: nodegroup object, or None if not found
1375 return self._UnlockedGetNodeGroup(uuid)
1377 @locking.ssynchronized(_config_lock, shared=1)
1378 def GetAllNodeGroupsInfo(self):
1379 """Get the configuration of all node groups.
1382 return dict(self._config_data.nodegroups)
1384 @locking.ssynchronized(_config_lock, shared=1)
1385 def GetNodeGroupList(self):
1386 """Get a list of node groups.
1389 return self._config_data.nodegroups.keys()
1391 @locking.ssynchronized(_config_lock, shared=1)
1392 def GetNodeGroupMembersByNodes(self, nodes):
1393 """Get nodes which are member in the same nodegroups as the given nodes.
1396 ngfn = lambda node_name: self._UnlockedGetNodeInfo(node_name).group
1397 return frozenset(member_name
1398 for node_name in nodes
1400 self._UnlockedGetNodeGroup(ngfn(node_name)).members)
1402 @locking.ssynchronized(_config_lock, shared=1)
1403 def GetMultiNodeGroupInfo(self, group_uuids):
1404 """Get the configuration of multiple node groups.
1406 @param group_uuids: List of node group UUIDs
1408 @return: List of tuples of (group_uuid, group_info)
1411 return [(uuid, self._UnlockedGetNodeGroup(uuid)) for uuid in group_uuids]
1413 @locking.ssynchronized(_config_lock)
1414 def AddInstance(self, instance, ec_id):
1415 """Add an instance to the config.
1417 This should be used after creating a new instance.
1419 @type instance: L{objects.Instance}
1420 @param instance: the instance object
1423 if not isinstance(instance, objects.Instance):
1424 raise errors.ProgrammerError("Invalid type passed to AddInstance")
1426 if instance.disk_template != constants.DT_DISKLESS:
1427 all_lvs = instance.MapLVsByNode()
1428 logging.info("Instance '%s' DISK_LAYOUT: %s", instance.name, all_lvs)
1430 all_macs = self._AllMACs()
1431 for nic in instance.nics:
1432 if nic.mac in all_macs:
1433 raise errors.ConfigurationError("Cannot add instance %s:"
1434 " MAC address '%s' already in use." %
1435 (instance.name, nic.mac))
1437 self._EnsureUUID(instance, ec_id)
1439 instance.serial_no = 1
1440 instance.ctime = instance.mtime = time.time()
1441 self._config_data.instances[instance.name] = instance
1442 self._config_data.cluster.serial_no += 1
1443 self._UnlockedReleaseDRBDMinors(instance.name)
1444 self._UnlockedCommitTemporaryIps(ec_id)
1447 def _EnsureUUID(self, item, ec_id):
1448 """Ensures a given object has a valid UUID.
1450 @param item: the instance or node to be checked
1451 @param ec_id: the execution context id for the uuid reservation
1455 item.uuid = self._GenerateUniqueID(ec_id)
1456 elif item.uuid in self._AllIDs(include_temporary=True):
1457 raise errors.ConfigurationError("Cannot add '%s': UUID %s already"
1458 " in use" % (item.name, item.uuid))
1460 def _SetInstanceStatus(self, instance_name, status, disks_active):
1461 """Set the instance's status to a given value.
1464 if instance_name not in self._config_data.instances:
1465 raise errors.ConfigurationError("Unknown instance '%s'" %
1467 instance = self._config_data.instances[instance_name]
1470 status = instance.admin_state
1471 if disks_active is None:
1472 disks_active = instance.disks_active
1474 assert status in constants.ADMINST_ALL, \
1475 "Invalid status '%s' passed to SetInstanceStatus" % (status,)
1477 if instance.admin_state != status or \
1478 instance.disks_active != disks_active:
1479 instance.admin_state = status
1480 instance.disks_active = disks_active
1481 instance.serial_no += 1
1482 instance.mtime = time.time()
1485 @locking.ssynchronized(_config_lock)
1486 def MarkInstanceUp(self, instance_name):
1487 """Mark the instance status to up in the config.
1489 This also sets the instance disks active flag.
1492 self._SetInstanceStatus(instance_name, constants.ADMINST_UP, True)
1494 @locking.ssynchronized(_config_lock)
1495 def MarkInstanceOffline(self, instance_name):
1496 """Mark the instance status to down in the config.
1498 This also clears the instance disks active flag.
1501 self._SetInstanceStatus(instance_name, constants.ADMINST_OFFLINE, False)
1503 @locking.ssynchronized(_config_lock)
1504 def RemoveInstance(self, instance_name):
1505 """Remove the instance from the configuration.
1508 if instance_name not in self._config_data.instances:
1509 raise errors.ConfigurationError("Unknown instance '%s'" % instance_name)
1511 # If a network port has been allocated to the instance,
1512 # return it to the pool of free ports.
1513 inst = self._config_data.instances[instance_name]
1514 network_port = getattr(inst, "network_port", None)
1515 if network_port is not None:
1516 self._config_data.cluster.tcpudp_port_pool.add(network_port)
1518 instance = self._UnlockedGetInstanceInfo(instance_name)
1520 for nic in instance.nics:
1521 if nic.network and nic.ip:
1522 # Return all IP addresses to the respective address pools
1523 self._UnlockedCommitIp(constants.RELEASE_ACTION, nic.network, nic.ip)
1525 del self._config_data.instances[instance_name]
1526 self._config_data.cluster.serial_no += 1
1529 @locking.ssynchronized(_config_lock)
1530 def RenameInstance(self, old_name, new_name):
1531 """Rename an instance.
1533 This needs to be done in ConfigWriter and not by RemoveInstance
1534 combined with AddInstance as only we can guarantee an atomic
1538 if old_name not in self._config_data.instances:
1539 raise errors.ConfigurationError("Unknown instance '%s'" % old_name)
1541 # Operate on a copy to not loose instance object in case of a failure
1542 inst = self._config_data.instances[old_name].Copy()
1543 inst.name = new_name
1545 for (idx, disk) in enumerate(inst.disks):
1546 if disk.dev_type == constants.LD_FILE:
1547 # rename the file paths in logical and physical id
1548 file_storage_dir = os.path.dirname(os.path.dirname(disk.logical_id[1]))
1549 disk.logical_id = (disk.logical_id[0],
1550 utils.PathJoin(file_storage_dir, inst.name,
1552 disk.physical_id = disk.logical_id
1554 # Actually replace instance object
1555 del self._config_data.instances[old_name]
1556 self._config_data.instances[inst.name] = inst
1558 # Force update of ssconf files
1559 self._config_data.cluster.serial_no += 1
1563 @locking.ssynchronized(_config_lock)
1564 def MarkInstanceDown(self, instance_name):
1565 """Mark the status of an instance to down in the configuration.
1567 This does not touch the instance disks active flag, as shut down instances
1568 can still have active disks.
1571 self._SetInstanceStatus(instance_name, constants.ADMINST_DOWN, None)
1573 @locking.ssynchronized(_config_lock)
1574 def MarkInstanceDisksActive(self, instance_name):
1575 """Mark the status of instance disks active.
1578 self._SetInstanceStatus(instance_name, None, True)
1580 @locking.ssynchronized(_config_lock)
1581 def MarkInstanceDisksInactive(self, instance_name):
1582 """Mark the status of instance disks inactive.
1585 self._SetInstanceStatus(instance_name, None, False)
1587 def _UnlockedGetInstanceList(self):
1588 """Get the list of instances.
1590 This function is for internal use, when the config lock is already held.
1593 return self._config_data.instances.keys()
1595 @locking.ssynchronized(_config_lock, shared=1)
1596 def GetInstanceList(self):
1597 """Get the list of instances.
1599 @return: array of instances, ex. ['instance2.example.com',
1600 'instance1.example.com']
1603 return self._UnlockedGetInstanceList()
1605 def ExpandInstanceName(self, short_name):
1606 """Attempt to expand an incomplete instance name.
1609 # Locking is done in L{ConfigWriter.GetInstanceList}
1610 return _MatchNameComponentIgnoreCase(short_name, self.GetInstanceList())
1612 def _UnlockedGetInstanceInfo(self, instance_name):
1613 """Returns information about an instance.
1615 This function is for internal use, when the config lock is already held.
1618 if instance_name not in self._config_data.instances:
1621 return self._config_data.instances[instance_name]
1623 @locking.ssynchronized(_config_lock, shared=1)
1624 def GetInstanceInfo(self, instance_name):
1625 """Returns information about an instance.
1627 It takes the information from the configuration file. Other information of
1628 an instance are taken from the live systems.
1630 @param instance_name: name of the instance, e.g.
1631 I{instance1.example.com}
1633 @rtype: L{objects.Instance}
1634 @return: the instance object
1637 return self._UnlockedGetInstanceInfo(instance_name)
1639 @locking.ssynchronized(_config_lock, shared=1)
1640 def GetInstanceNodeGroups(self, instance_name, primary_only=False):
1641 """Returns set of node group UUIDs for instance's nodes.
1646 instance = self._UnlockedGetInstanceInfo(instance_name)
1648 raise errors.ConfigurationError("Unknown instance '%s'" % instance_name)
1651 nodes = [instance.primary_node]
1653 nodes = instance.all_nodes
1655 return frozenset(self._UnlockedGetNodeInfo(node_name).group
1656 for node_name in nodes)
1658 @locking.ssynchronized(_config_lock, shared=1)
1659 def GetInstanceNetworks(self, instance_name):
1660 """Returns set of network UUIDs for instance's nics.
1665 instance = self._UnlockedGetInstanceInfo(instance_name)
1667 raise errors.ConfigurationError("Unknown instance '%s'" % instance_name)
1670 for nic in instance.nics:
1672 networks.add(nic.network)
1674 return frozenset(networks)
1676 @locking.ssynchronized(_config_lock, shared=1)
1677 def GetMultiInstanceInfo(self, instances):
1678 """Get the configuration of multiple instances.
1680 @param instances: list of instance names
1682 @return: list of tuples (instance, instance_info), where
1683 instance_info is what would GetInstanceInfo return for the
1684 node, while keeping the original order
1687 return [(name, self._UnlockedGetInstanceInfo(name)) for name in instances]
1689 @locking.ssynchronized(_config_lock, shared=1)
1690 def GetAllInstancesInfo(self):
1691 """Get the configuration of all instances.
1694 @return: dict of (instance, instance_info), where instance_info is what
1695 would GetInstanceInfo return for the node
1698 my_dict = dict([(instance, self._UnlockedGetInstanceInfo(instance))
1699 for instance in self._UnlockedGetInstanceList()])
1702 @locking.ssynchronized(_config_lock, shared=1)
1703 def GetInstancesInfoByFilter(self, filter_fn):
1704 """Get instance configuration with a filter.
1706 @type filter_fn: callable
1707 @param filter_fn: Filter function receiving instance object as parameter,
1708 returning boolean. Important: this function is called while the
1709 configuration locks is held. It must not do any complex work or call
1710 functions potentially leading to a deadlock. Ideally it doesn't call any
1711 other functions and just compares instance attributes.
1714 return dict((name, inst)
1715 for (name, inst) in self._config_data.instances.items()
1718 @locking.ssynchronized(_config_lock)
1719 def AddNode(self, node, ec_id):
1720 """Add a node to the configuration.
1722 @type node: L{objects.Node}
1723 @param node: a Node instance
1726 logging.info("Adding node %s to configuration", node.name)
1728 self._EnsureUUID(node, ec_id)
1731 node.ctime = node.mtime = time.time()
1732 self._UnlockedAddNodeToGroup(node.name, node.group)
1733 self._config_data.nodes[node.name] = node
1734 self._config_data.cluster.serial_no += 1
1737 @locking.ssynchronized(_config_lock)
1738 def RemoveNode(self, node_name):
1739 """Remove a node from the configuration.
1742 logging.info("Removing node %s from configuration", node_name)
1744 if node_name not in self._config_data.nodes:
1745 raise errors.ConfigurationError("Unknown node '%s'" % node_name)
1747 self._UnlockedRemoveNodeFromGroup(self._config_data.nodes[node_name])
1748 del self._config_data.nodes[node_name]
1749 self._config_data.cluster.serial_no += 1
1752 def ExpandNodeName(self, short_name):
1753 """Attempt to expand an incomplete node name.
1756 # Locking is done in L{ConfigWriter.GetNodeList}
1757 return _MatchNameComponentIgnoreCase(short_name, self.GetNodeList())
1759 def _UnlockedGetNodeInfo(self, node_name):
1760 """Get the configuration of a node, as stored in the config.
1762 This function is for internal use, when the config lock is already
1765 @param node_name: the node name, e.g. I{node1.example.com}
1767 @rtype: L{objects.Node}
1768 @return: the node object
1771 if node_name not in self._config_data.nodes:
1774 return self._config_data.nodes[node_name]
1776 @locking.ssynchronized(_config_lock, shared=1)
1777 def GetNodeInfo(self, node_name):
1778 """Get the configuration of a node, as stored in the config.
1780 This is just a locked wrapper over L{_UnlockedGetNodeInfo}.
1782 @param node_name: the node name, e.g. I{node1.example.com}
1784 @rtype: L{objects.Node}
1785 @return: the node object
1788 return self._UnlockedGetNodeInfo(node_name)
1790 @locking.ssynchronized(_config_lock, shared=1)
1791 def GetNodeInstances(self, node_name):
1792 """Get the instances of a node, as stored in the config.
1794 @param node_name: the node name, e.g. I{node1.example.com}
1796 @rtype: (list, list)
1797 @return: a tuple with two lists: the primary and the secondary instances
1802 for inst in self._config_data.instances.values():
1803 if inst.primary_node == node_name:
1804 pri.append(inst.name)
1805 if node_name in inst.secondary_nodes:
1806 sec.append(inst.name)
1809 @locking.ssynchronized(_config_lock, shared=1)
1810 def GetNodeGroupInstances(self, uuid, primary_only=False):
1811 """Get the instances of a node group.
1813 @param uuid: Node group UUID
1814 @param primary_only: Whether to only consider primary nodes
1816 @return: List of instance names in node group
1820 nodes_fn = lambda inst: [inst.primary_node]
1822 nodes_fn = lambda inst: inst.all_nodes
1824 return frozenset(inst.name
1825 for inst in self._config_data.instances.values()
1826 for node_name in nodes_fn(inst)
1827 if self._UnlockedGetNodeInfo(node_name).group == uuid)
1829 def _UnlockedGetNodeList(self):
1830 """Return the list of nodes which are in the configuration.
1832 This function is for internal use, when the config lock is already
1838 return self._config_data.nodes.keys()
1840 @locking.ssynchronized(_config_lock, shared=1)
1841 def GetNodeList(self):
1842 """Return the list of nodes which are in the configuration.
1845 return self._UnlockedGetNodeList()
1847 def _UnlockedGetOnlineNodeList(self):
1848 """Return the list of nodes which are online.
1851 all_nodes = [self._UnlockedGetNodeInfo(node)
1852 for node in self._UnlockedGetNodeList()]
1853 return [node.name for node in all_nodes if not node.offline]
1855 @locking.ssynchronized(_config_lock, shared=1)
1856 def GetOnlineNodeList(self):
1857 """Return the list of nodes which are online.
1860 return self._UnlockedGetOnlineNodeList()
1862 @locking.ssynchronized(_config_lock, shared=1)
1863 def GetVmCapableNodeList(self):
1864 """Return the list of nodes which are not vm capable.
1867 all_nodes = [self._UnlockedGetNodeInfo(node)
1868 for node in self._UnlockedGetNodeList()]
1869 return [node.name for node in all_nodes if node.vm_capable]
1871 @locking.ssynchronized(_config_lock, shared=1)
1872 def GetNonVmCapableNodeList(self):
1873 """Return the list of nodes which are not vm capable.
1876 all_nodes = [self._UnlockedGetNodeInfo(node)
1877 for node in self._UnlockedGetNodeList()]
1878 return [node.name for node in all_nodes if not node.vm_capable]
1880 @locking.ssynchronized(_config_lock, shared=1)
1881 def GetMultiNodeInfo(self, nodes):
1882 """Get the configuration of multiple nodes.
1884 @param nodes: list of node names
1886 @return: list of tuples of (node, node_info), where node_info is
1887 what would GetNodeInfo return for the node, in the original
1891 return [(name, self._UnlockedGetNodeInfo(name)) for name in nodes]
1893 @locking.ssynchronized(_config_lock, shared=1)
1894 def GetAllNodesInfo(self):
1895 """Get the configuration of all nodes.
1898 @return: dict of (node, node_info), where node_info is what
1899 would GetNodeInfo return for the node
1902 return self._UnlockedGetAllNodesInfo()
1904 def _UnlockedGetAllNodesInfo(self):
1905 """Gets configuration of all nodes.
1907 @note: See L{GetAllNodesInfo}
1910 return dict([(node, self._UnlockedGetNodeInfo(node))
1911 for node in self._UnlockedGetNodeList()])
1913 @locking.ssynchronized(_config_lock, shared=1)
1914 def GetNodeGroupsFromNodes(self, nodes):
1915 """Returns groups for a list of nodes.
1917 @type nodes: list of string
1918 @param nodes: List of node names
1922 return frozenset(self._UnlockedGetNodeInfo(name).group for name in nodes)
1924 def _UnlockedGetMasterCandidateStats(self, exceptions=None):
1925 """Get the number of current and maximum desired and possible candidates.
1927 @type exceptions: list
1928 @param exceptions: if passed, list of nodes that should be ignored
1930 @return: tuple of (current, desired and possible, possible)
1933 mc_now = mc_should = mc_max = 0
1934 for node in self._config_data.nodes.values():
1935 if exceptions and node.name in exceptions:
1937 if not (node.offline or node.drained) and node.master_capable:
1939 if node.master_candidate:
1941 mc_should = min(mc_max, self._config_data.cluster.candidate_pool_size)
1942 return (mc_now, mc_should, mc_max)
1944 @locking.ssynchronized(_config_lock, shared=1)
1945 def GetMasterCandidateStats(self, exceptions=None):
1946 """Get the number of current and maximum possible candidates.
1948 This is just a wrapper over L{_UnlockedGetMasterCandidateStats}.
1950 @type exceptions: list
1951 @param exceptions: if passed, list of nodes that should be ignored
1953 @return: tuple of (current, max)
1956 return self._UnlockedGetMasterCandidateStats(exceptions)
1958 @locking.ssynchronized(_config_lock)
1959 def MaintainCandidatePool(self, exceptions):
1960 """Try to grow the candidate pool to the desired size.
1962 @type exceptions: list
1963 @param exceptions: if passed, list of nodes that should be ignored
1965 @return: list with the adjusted nodes (L{objects.Node} instances)
1968 mc_now, mc_max, _ = self._UnlockedGetMasterCandidateStats(exceptions)
1971 node_list = self._config_data.nodes.keys()
1972 random.shuffle(node_list)
1973 for name in node_list:
1974 if mc_now >= mc_max:
1976 node = self._config_data.nodes[name]
1977 if (node.master_candidate or node.offline or node.drained or
1978 node.name in exceptions or not node.master_capable):
1980 mod_list.append(node)
1981 node.master_candidate = True
1984 if mc_now != mc_max:
1985 # this should not happen
1986 logging.warning("Warning: MaintainCandidatePool didn't manage to"
1987 " fill the candidate pool (%d/%d)", mc_now, mc_max)
1989 self._config_data.cluster.serial_no += 1
1994 def _UnlockedAddNodeToGroup(self, node_name, nodegroup_uuid):
1995 """Add a given node to the specified group.
1998 if nodegroup_uuid not in self._config_data.nodegroups:
1999 # This can happen if a node group gets deleted between its lookup and
2000 # when we're adding the first node to it, since we don't keep a lock in
2001 # the meantime. It's ok though, as we'll fail cleanly if the node group
2002 # is not found anymore.
2003 raise errors.OpExecError("Unknown node group: %s" % nodegroup_uuid)
2004 if node_name not in self._config_data.nodegroups[nodegroup_uuid].members:
2005 self._config_data.nodegroups[nodegroup_uuid].members.append(node_name)
2007 def _UnlockedRemoveNodeFromGroup(self, node):
2008 """Remove a given node from its group.
2011 nodegroup = node.group
2012 if nodegroup not in self._config_data.nodegroups:
2013 logging.warning("Warning: node '%s' has unknown node group '%s'"
2014 " (while being removed from it)", node.name, nodegroup)
2015 nodegroup_obj = self._config_data.nodegroups[nodegroup]
2016 if node.name not in nodegroup_obj.members:
2017 logging.warning("Warning: node '%s' not a member of its node group '%s'"
2018 " (while being removed from it)", node.name, nodegroup)
2020 nodegroup_obj.members.remove(node.name)
2022 @locking.ssynchronized(_config_lock)
2023 def AssignGroupNodes(self, mods):
2024 """Changes the group of a number of nodes.
2026 @type mods: list of tuples; (node name, new group UUID)
2027 @param mods: Node membership modifications
2030 groups = self._config_data.nodegroups
2031 nodes = self._config_data.nodes
2035 # Try to resolve names/UUIDs first
2036 for (node_name, new_group_uuid) in mods:
2038 node = nodes[node_name]
2040 raise errors.ConfigurationError("Unable to find node '%s'" % node_name)
2042 if node.group == new_group_uuid:
2043 # Node is being assigned to its current group
2044 logging.debug("Node '%s' was assigned to its current group (%s)",
2045 node_name, node.group)
2048 # Try to find current group of node
2050 old_group = groups[node.group]
2052 raise errors.ConfigurationError("Unable to find old group '%s'" %
2055 # Try to find new group for node
2057 new_group = groups[new_group_uuid]
2059 raise errors.ConfigurationError("Unable to find new group '%s'" %
2062 assert node.name in old_group.members, \
2063 ("Inconsistent configuration: node '%s' not listed in members for its"
2064 " old group '%s'" % (node.name, old_group.uuid))
2065 assert node.name not in new_group.members, \
2066 ("Inconsistent configuration: node '%s' already listed in members for"
2067 " its new group '%s'" % (node.name, new_group.uuid))
2069 resmod.append((node, old_group, new_group))
2072 for (node, old_group, new_group) in resmod:
2073 assert node.uuid != new_group.uuid and old_group.uuid != new_group.uuid, \
2074 "Assigning to current group is not possible"
2076 node.group = new_group.uuid
2078 # Update members of involved groups
2079 if node.name in old_group.members:
2080 old_group.members.remove(node.name)
2081 if node.name not in new_group.members:
2082 new_group.members.append(node.name)
2084 # Update timestamps and serials (only once per node/group object)
2086 for obj in frozenset(itertools.chain(*resmod)): # pylint: disable=W0142
2090 # Force ssconf update
2091 self._config_data.cluster.serial_no += 1
2095 def _BumpSerialNo(self):
2096 """Bump up the serial number of the config.
2099 self._config_data.serial_no += 1
2100 self._config_data.mtime = time.time()
2102 def _AllUUIDObjects(self):
2103 """Returns all objects with uuid attributes.
2106 return (self._config_data.instances.values() +
2107 self._config_data.nodes.values() +
2108 self._config_data.nodegroups.values() +
2109 self._config_data.networks.values() +
2112 [self._config_data.cluster])
2114 def _OpenConfig(self, accept_foreign):
2115 """Read the config data from disk.
2118 raw_data = utils.ReadFile(self._cfg_file)
2121 data = objects.ConfigData.FromDict(serializer.Load(raw_data))
2122 except Exception, err:
2123 raise errors.ConfigurationError(err)
2125 # Make sure the configuration has the right version
2126 _ValidateConfig(data)
2128 if (not hasattr(data, "cluster") or
2129 not hasattr(data.cluster, "rsahostkeypub")):
2130 raise errors.ConfigurationError("Incomplete configuration"
2131 " (missing cluster.rsahostkeypub)")
2133 if data.cluster.master_node != self._my_hostname and not accept_foreign:
2134 msg = ("The configuration denotes node %s as master, while my"
2135 " hostname is %s; opening a foreign configuration is only"
2136 " possible in accept_foreign mode" %
2137 (data.cluster.master_node, self._my_hostname))
2138 raise errors.ConfigurationError(msg)
2140 self._config_data = data
2141 # reset the last serial as -1 so that the next write will cause
2143 self._last_cluster_serial = -1
2145 # Upgrade configuration if needed
2146 self._UpgradeConfig()
2148 self._cfg_id = utils.GetFileID(path=self._cfg_file)
2150 def _UpgradeConfig(self):
2151 """Run any upgrade steps.
2153 This method performs both in-object upgrades and also update some data
2154 elements that need uniqueness across the whole configuration or interact
2157 @warning: this function will call L{_WriteConfig()}, but also
2158 L{DropECReservations} so it needs to be called only from a
2159 "safe" place (the constructor). If one wanted to call it with
2160 the lock held, a DropECReservationUnlocked would need to be
2161 created first, to avoid causing deadlock.
2164 # Keep a copy of the persistent part of _config_data to check for changes
2165 # Serialization doesn't guarantee order in dictionaries
2166 oldconf = copy.deepcopy(self._config_data.ToDict())
2168 # In-object upgrades
2169 self._config_data.UpgradeConfig()
2171 for item in self._AllUUIDObjects():
2172 if item.uuid is None:
2173 item.uuid = self._GenerateUniqueID(_UPGRADE_CONFIG_JID)
2174 if not self._config_data.nodegroups:
2175 default_nodegroup_name = constants.INITIAL_NODE_GROUP_NAME
2176 default_nodegroup = objects.NodeGroup(name=default_nodegroup_name,
2178 self._UnlockedAddNodeGroup(default_nodegroup, _UPGRADE_CONFIG_JID, True)
2179 for node in self._config_data.nodes.values():
2181 node.group = self.LookupNodeGroup(None)
2182 # This is technically *not* an upgrade, but needs to be done both when
2183 # nodegroups are being added, and upon normally loading the config,
2184 # because the members list of a node group is discarded upon
2185 # serializing/deserializing the object.
2186 self._UnlockedAddNodeToGroup(node.name, node.group)
2188 modified = (oldconf != self._config_data.ToDict())
2191 # This is ok even if it acquires the internal lock, as _UpgradeConfig is
2192 # only called at config init time, without the lock held
2193 self.DropECReservations(_UPGRADE_CONFIG_JID)
2195 config_errors = self._UnlockedVerifyConfig()
2197 errmsg = ("Loaded configuration data is not consistent: %s" %
2198 (utils.CommaJoin(config_errors)))
2199 logging.critical(errmsg)
2201 def _DistributeConfig(self, feedback_fn):
2202 """Distribute the configuration to the other nodes.
2204 Currently, this only copies the configuration file. In the future,
2205 it could be used to encapsulate the 2/3-phase update mechanism.
2215 myhostname = self._my_hostname
2216 # we can skip checking whether _UnlockedGetNodeInfo returns None
2217 # since the node list comes from _UnlocketGetNodeList, and we are
2218 # called with the lock held, so no modifications should take place
2220 for node_name in self._UnlockedGetNodeList():
2221 if node_name == myhostname:
2223 node_info = self._UnlockedGetNodeInfo(node_name)
2224 if not node_info.master_candidate:
2226 node_list.append(node_info.name)
2227 addr_list.append(node_info.primary_ip)
2229 # TODO: Use dedicated resolver talking to config writer for name resolution
2231 self._GetRpc(addr_list).call_upload_file(node_list, self._cfg_file)
2232 for to_node, to_result in result.items():
2233 msg = to_result.fail_msg
2235 msg = ("Copy of file %s to node %s failed: %s" %
2236 (self._cfg_file, to_node, msg))
2246 def _WriteConfig(self, destination=None, feedback_fn=None):
2247 """Write the configuration data to persistent storage.
2250 assert feedback_fn is None or callable(feedback_fn)
2252 # Warn on config errors, but don't abort the save - the
2253 # configuration has already been modified, and we can't revert;
2254 # the best we can do is to warn the user and save as is, leaving
2255 # recovery to the user
2256 config_errors = self._UnlockedVerifyConfig()
2258 errmsg = ("Configuration data is not consistent: %s" %
2259 (utils.CommaJoin(config_errors)))
2260 logging.critical(errmsg)
2264 if destination is None:
2265 destination = self._cfg_file
2266 self._BumpSerialNo()
2267 txt = serializer.Dump(self._config_data.ToDict())
2269 getents = self._getents()
2271 fd = utils.SafeWriteFile(destination, self._cfg_id, data=txt,
2272 close=False, gid=getents.confd_gid, mode=0640)
2273 except errors.LockError:
2274 raise errors.ConfigurationError("The configuration file has been"
2275 " modified since the last write, cannot"
2278 self._cfg_id = utils.GetFileID(fd=fd)
2282 self.write_count += 1
2284 # and redistribute the config file to master candidates
2285 self._DistributeConfig(feedback_fn)
2287 # Write ssconf files on all nodes (including locally)
2288 if self._last_cluster_serial < self._config_data.cluster.serial_no:
2289 if not self._offline:
2290 result = self._GetRpc(None).call_write_ssconf_files(
2291 self._UnlockedGetOnlineNodeList(),
2292 self._UnlockedGetSsconfValues())
2294 for nname, nresu in result.items():
2295 msg = nresu.fail_msg
2297 errmsg = ("Error while uploading ssconf files to"
2298 " node %s: %s" % (nname, msg))
2299 logging.warning(errmsg)
2304 self._last_cluster_serial = self._config_data.cluster.serial_no
2306 def _UnlockedGetSsconfValues(self):
2307 """Return the values needed by ssconf.
2310 @return: a dictionary with keys the ssconf names and values their
2315 instance_names = utils.NiceSort(self._UnlockedGetInstanceList())
2316 node_names = utils.NiceSort(self._UnlockedGetNodeList())
2317 node_info = [self._UnlockedGetNodeInfo(name) for name in node_names]
2318 node_pri_ips = ["%s %s" % (ninfo.name, ninfo.primary_ip)
2319 for ninfo in node_info]
2320 node_snd_ips = ["%s %s" % (ninfo.name, ninfo.secondary_ip)
2321 for ninfo in node_info]
2323 instance_data = fn(instance_names)
2324 off_data = fn(node.name for node in node_info if node.offline)
2325 on_data = fn(node.name for node in node_info if not node.offline)
2326 mc_data = fn(node.name for node in node_info if node.master_candidate)
2327 mc_ips_data = fn(node.primary_ip for node in node_info
2328 if node.master_candidate)
2329 node_data = fn(node_names)
2330 node_pri_ips_data = fn(node_pri_ips)
2331 node_snd_ips_data = fn(node_snd_ips)
2333 cluster = self._config_data.cluster
2334 cluster_tags = fn(cluster.GetTags())
2336 hypervisor_list = fn(cluster.enabled_hypervisors)
2338 uid_pool = uidpool.FormatUidPool(cluster.uid_pool, separator="\n")
2340 nodegroups = ["%s %s" % (nodegroup.uuid, nodegroup.name) for nodegroup in
2341 self._config_data.nodegroups.values()]
2342 nodegroups_data = fn(utils.NiceSort(nodegroups))
2343 networks = ["%s %s" % (net.uuid, net.name) for net in
2344 self._config_data.networks.values()]
2345 networks_data = fn(utils.NiceSort(networks))
2348 constants.SS_CLUSTER_NAME: cluster.cluster_name,
2349 constants.SS_CLUSTER_TAGS: cluster_tags,
2350 constants.SS_FILE_STORAGE_DIR: cluster.file_storage_dir,
2351 constants.SS_SHARED_FILE_STORAGE_DIR: cluster.shared_file_storage_dir,
2352 constants.SS_MASTER_CANDIDATES: mc_data,
2353 constants.SS_MASTER_CANDIDATES_IPS: mc_ips_data,
2354 constants.SS_MASTER_IP: cluster.master_ip,
2355 constants.SS_MASTER_NETDEV: cluster.master_netdev,
2356 constants.SS_MASTER_NETMASK: str(cluster.master_netmask),
2357 constants.SS_MASTER_NODE: cluster.master_node,
2358 constants.SS_NODE_LIST: node_data,
2359 constants.SS_NODE_PRIMARY_IPS: node_pri_ips_data,
2360 constants.SS_NODE_SECONDARY_IPS: node_snd_ips_data,
2361 constants.SS_OFFLINE_NODES: off_data,
2362 constants.SS_ONLINE_NODES: on_data,
2363 constants.SS_PRIMARY_IP_FAMILY: str(cluster.primary_ip_family),
2364 constants.SS_INSTANCE_LIST: instance_data,
2365 constants.SS_RELEASE_VERSION: constants.RELEASE_VERSION,
2366 constants.SS_HYPERVISOR_LIST: hypervisor_list,
2367 constants.SS_MAINTAIN_NODE_HEALTH: str(cluster.maintain_node_health),
2368 constants.SS_UID_POOL: uid_pool,
2369 constants.SS_NODEGROUPS: nodegroups_data,
2370 constants.SS_NETWORKS: networks_data,
2372 bad_values = [(k, v) for k, v in ssconf_values.items()
2373 if not isinstance(v, (str, basestring))]
2375 err = utils.CommaJoin("%s=%s" % (k, v) for k, v in bad_values)
2376 raise errors.ConfigurationError("Some ssconf key(s) have non-string"
2377 " values: %s" % err)
2378 return ssconf_values
2380 @locking.ssynchronized(_config_lock, shared=1)
2381 def GetSsconfValues(self):
2382 """Wrapper using lock around _UnlockedGetSsconf().
2385 return self._UnlockedGetSsconfValues()
2387 @locking.ssynchronized(_config_lock, shared=1)
2388 def GetVGName(self):
2389 """Return the volume group name.
2392 return self._config_data.cluster.volume_group_name
2394 @locking.ssynchronized(_config_lock)
2395 def SetVGName(self, vg_name):
2396 """Set the volume group name.
2399 self._config_data.cluster.volume_group_name = vg_name
2400 self._config_data.cluster.serial_no += 1
2403 @locking.ssynchronized(_config_lock, shared=1)
2404 def GetDRBDHelper(self):
2405 """Return DRBD usermode helper.
2408 return self._config_data.cluster.drbd_usermode_helper
2410 @locking.ssynchronized(_config_lock)
2411 def SetDRBDHelper(self, drbd_helper):
2412 """Set DRBD usermode helper.
2415 self._config_data.cluster.drbd_usermode_helper = drbd_helper
2416 self._config_data.cluster.serial_no += 1
2419 @locking.ssynchronized(_config_lock, shared=1)
2420 def GetMACPrefix(self):
2421 """Return the mac prefix.
2424 return self._config_data.cluster.mac_prefix
2426 @locking.ssynchronized(_config_lock, shared=1)
2427 def GetClusterInfo(self):
2428 """Returns information about the cluster
2430 @rtype: L{objects.Cluster}
2431 @return: the cluster object
2434 return self._config_data.cluster
2436 @locking.ssynchronized(_config_lock, shared=1)
2437 def HasAnyDiskOfType(self, dev_type):
2438 """Check if in there is at disk of the given type in the configuration.
2441 return self._config_data.HasAnyDiskOfType(dev_type)
2443 @locking.ssynchronized(_config_lock)
2444 def Update(self, target, feedback_fn, ec_id=None):
2445 """Notify function to be called after updates.
2447 This function must be called when an object (as returned by
2448 GetInstanceInfo, GetNodeInfo, GetCluster) has been updated and the
2449 caller wants the modifications saved to the backing store. Note
2450 that all modified objects will be saved, but the target argument
2451 is the one the caller wants to ensure that it's saved.
2453 @param target: an instance of either L{objects.Cluster},
2454 L{objects.Node} or L{objects.Instance} which is existing in
2456 @param feedback_fn: Callable feedback function
2459 if self._config_data is None:
2460 raise errors.ProgrammerError("Configuration file not read,"
2462 update_serial = False
2463 if isinstance(target, objects.Cluster):
2464 test = target == self._config_data.cluster
2465 elif isinstance(target, objects.Node):
2466 test = target in self._config_data.nodes.values()
2467 update_serial = True
2468 elif isinstance(target, objects.Instance):
2469 test = target in self._config_data.instances.values()
2470 elif isinstance(target, objects.NodeGroup):
2471 test = target in self._config_data.nodegroups.values()
2472 elif isinstance(target, objects.Network):
2473 test = target in self._config_data.networks.values()
2475 raise errors.ProgrammerError("Invalid object type (%s) passed to"
2476 " ConfigWriter.Update" % type(target))
2478 raise errors.ConfigurationError("Configuration updated since object"
2479 " has been read or unknown object")
2480 target.serial_no += 1
2481 target.mtime = now = time.time()
2484 # for node updates, we need to increase the cluster serial too
2485 self._config_data.cluster.serial_no += 1
2486 self._config_data.cluster.mtime = now
2488 if isinstance(target, objects.Instance):
2489 self._UnlockedReleaseDRBDMinors(target.name)
2491 if ec_id is not None:
2492 # Commit all ips reserved by OpInstanceSetParams and OpGroupSetParams
2493 self._UnlockedCommitTemporaryIps(ec_id)
2495 self._WriteConfig(feedback_fn=feedback_fn)
2497 @locking.ssynchronized(_config_lock)
2498 def DropECReservations(self, ec_id):
2499 """Drop per-execution-context reservations
2502 for rm in self._all_rms:
2503 rm.DropECReservations(ec_id)
2505 @locking.ssynchronized(_config_lock, shared=1)
2506 def GetAllNetworksInfo(self):
2507 """Get configuration info of all the networks.
2510 return dict(self._config_data.networks)
2512 def _UnlockedGetNetworkList(self):
2513 """Get the list of networks.
2515 This function is for internal use, when the config lock is already held.
2518 return self._config_data.networks.keys()
2520 @locking.ssynchronized(_config_lock, shared=1)
2521 def GetNetworkList(self):
2522 """Get the list of networks.
2524 @return: array of networks, ex. ["main", "vlan100", "200]
2527 return self._UnlockedGetNetworkList()
2529 @locking.ssynchronized(_config_lock, shared=1)
2530 def GetNetworkNames(self):
2531 """Get a list of network names
2535 for net in self._config_data.networks.values()]
2538 def _UnlockedGetNetwork(self, uuid):
2539 """Returns information about a network.
2541 This function is for internal use, when the config lock is already held.
2544 if uuid not in self._config_data.networks:
2547 return self._config_data.networks[uuid]
2549 @locking.ssynchronized(_config_lock, shared=1)
2550 def GetNetwork(self, uuid):
2551 """Returns information about a network.
2553 It takes the information from the configuration file.
2555 @param uuid: UUID of the network
2557 @rtype: L{objects.Network}
2558 @return: the network object
2561 return self._UnlockedGetNetwork(uuid)
2563 @locking.ssynchronized(_config_lock)
2564 def AddNetwork(self, net, ec_id, check_uuid=True):
2565 """Add a network to the configuration.
2567 @type net: L{objects.Network}
2568 @param net: the Network object to add
2570 @param ec_id: unique id for the job to use when creating a missing UUID
2573 self._UnlockedAddNetwork(net, ec_id, check_uuid)
2576 def _UnlockedAddNetwork(self, net, ec_id, check_uuid):
2577 """Add a network to the configuration.
2580 logging.info("Adding network %s to configuration", net.name)
2583 self._EnsureUUID(net, ec_id)
2586 net.ctime = net.mtime = time.time()
2587 self._config_data.networks[net.uuid] = net
2588 self._config_data.cluster.serial_no += 1
2590 def _UnlockedLookupNetwork(self, target):
2591 """Lookup a network's UUID.
2593 @type target: string
2594 @param target: network name or UUID
2596 @return: network UUID
2597 @raises errors.OpPrereqError: when the target network cannot be found
2602 if target in self._config_data.networks:
2604 for net in self._config_data.networks.values():
2605 if net.name == target:
2607 raise errors.OpPrereqError("Network '%s' not found" % target,
2610 @locking.ssynchronized(_config_lock, shared=1)
2611 def LookupNetwork(self, target):
2612 """Lookup a network's UUID.
2614 This function is just a wrapper over L{_UnlockedLookupNetwork}.
2616 @type target: string
2617 @param target: network name or UUID
2619 @return: network UUID
2622 return self._UnlockedLookupNetwork(target)
2624 @locking.ssynchronized(_config_lock)
2625 def RemoveNetwork(self, network_uuid):
2626 """Remove a network from the configuration.
2628 @type network_uuid: string
2629 @param network_uuid: the UUID of the network to remove
2632 logging.info("Removing network %s from configuration", network_uuid)
2634 if network_uuid not in self._config_data.networks:
2635 raise errors.ConfigurationError("Unknown network '%s'" % network_uuid)
2637 del self._config_data.networks[network_uuid]
2638 self._config_data.cluster.serial_no += 1
2641 def _UnlockedGetGroupNetParams(self, net_uuid, node):
2642 """Get the netparams (mode, link) of a network.
2644 Get a network's netparams for a given node.
2646 @type net_uuid: string
2647 @param net_uuid: network uuid
2649 @param node: node name
2650 @rtype: dict or None
2654 node_info = self._UnlockedGetNodeInfo(node)
2655 nodegroup_info = self._UnlockedGetNodeGroup(node_info.group)
2656 netparams = nodegroup_info.networks.get(net_uuid, None)
2660 @locking.ssynchronized(_config_lock, shared=1)
2661 def GetGroupNetParams(self, net_uuid, node):
2662 """Locking wrapper of _UnlockedGetGroupNetParams()
2665 return self._UnlockedGetGroupNetParams(net_uuid, node)
2667 @locking.ssynchronized(_config_lock, shared=1)
2668 def CheckIPInNodeGroup(self, ip, node):
2669 """Check IP uniqueness in nodegroup.
2671 Check networks that are connected in the node's node group
2672 if ip is contained in any of them. Used when creating/adding
2673 a NIC to ensure uniqueness among nodegroups.
2676 @param ip: ip address
2678 @param node: node name
2679 @rtype: (string, dict) or (None, None)
2680 @return: (network name, netparams)
2685 node_info = self._UnlockedGetNodeInfo(node)
2686 nodegroup_info = self._UnlockedGetNodeGroup(node_info.group)
2687 for net_uuid in nodegroup_info.networks.keys():
2688 net_info = self._UnlockedGetNetwork(net_uuid)
2689 pool = network.AddressPool(net_info)
2690 if pool.Contains(ip):
2691 return (net_info.name, nodegroup_info.networks[net_uuid])