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
21 """Instance related commands"""
23 # pylint: disable-msg=W0401,W0614,C0103
24 # W0401: Wildcard import ganeti.cli
25 # W0614: Unused import %s from wildcard import (since we need cli)
26 # C0103: Invalid name gnt-instance
32 from cStringIO import StringIO
34 from ganeti.cli import *
35 from ganeti import opcodes
36 from ganeti import constants
37 from ganeti import compat
38 from ganeti import utils
39 from ganeti import errors
42 _SHUTDOWN_CLUSTER = "cluster"
43 _SHUTDOWN_NODES_BOTH = "nodes"
44 _SHUTDOWN_NODES_PRI = "nodes-pri"
45 _SHUTDOWN_NODES_SEC = "nodes-sec"
46 _SHUTDOWN_NODES_BOTH_BY_TAGS = "nodes-by-tags"
47 _SHUTDOWN_NODES_PRI_BY_TAGS = "nodes-pri-by-tags"
48 _SHUTDOWN_NODES_SEC_BY_TAGS = "nodes-sec-by-tags"
49 _SHUTDOWN_INSTANCES = "instances"
50 _SHUTDOWN_INSTANCES_BY_TAGS = "instances-by-tags"
52 _SHUTDOWN_NODES_TAGS_MODES = (
53 _SHUTDOWN_NODES_BOTH_BY_TAGS,
54 _SHUTDOWN_NODES_PRI_BY_TAGS,
55 _SHUTDOWN_NODES_SEC_BY_TAGS)
60 #: default list of options for L{ListInstances}
62 "name", "hypervisor", "os", "pnode", "status", "oper_ram",
66 def _ExpandMultiNames(mode, names, client=None):
67 """Expand the given names using the passed mode.
69 For _SHUTDOWN_CLUSTER, all instances will be returned. For
70 _SHUTDOWN_NODES_PRI/SEC, all instances having those nodes as
71 primary/secondary will be returned. For _SHUTDOWN_NODES_BOTH, all
72 instances having those nodes as either primary or secondary will be
73 returned. For _SHUTDOWN_INSTANCES, the given instances will be
76 @param mode: one of L{_SHUTDOWN_CLUSTER}, L{_SHUTDOWN_NODES_BOTH},
77 L{_SHUTDOWN_NODES_PRI}, L{_SHUTDOWN_NODES_SEC} or
78 L{_SHUTDOWN_INSTANCES}
79 @param names: a list of names; for cluster, it must be empty,
80 and for node and instance it must be a list of valid item
81 names (short names are valid as usual, e.g. node1 instead of
84 @return: the list of names after the expansion
85 @raise errors.ProgrammerError: for unknown selection type
86 @raise errors.OpPrereqError: for invalid input parameters
89 # pylint: disable-msg=W0142
93 if mode == _SHUTDOWN_CLUSTER:
95 raise errors.OpPrereqError("Cluster filter mode takes no arguments",
97 idata = client.QueryInstances([], ["name"], False)
98 inames = [row[0] for row in idata]
100 elif mode in (_SHUTDOWN_NODES_BOTH,
102 _SHUTDOWN_NODES_SEC) + _SHUTDOWN_NODES_TAGS_MODES:
103 if mode in _SHUTDOWN_NODES_TAGS_MODES:
105 raise errors.OpPrereqError("No node tags passed", errors.ECODE_INVAL)
106 ndata = client.QueryNodes([], ["name", "pinst_list",
107 "sinst_list", "tags"], False)
108 ndata = [row for row in ndata if set(row[3]).intersection(names)]
111 raise errors.OpPrereqError("No node names passed", errors.ECODE_INVAL)
112 ndata = client.QueryNodes(names, ["name", "pinst_list", "sinst_list"],
115 ipri = [row[1] for row in ndata]
116 pri_names = list(itertools.chain(*ipri))
117 isec = [row[2] for row in ndata]
118 sec_names = list(itertools.chain(*isec))
119 if mode in (_SHUTDOWN_NODES_BOTH, _SHUTDOWN_NODES_BOTH_BY_TAGS):
120 inames = pri_names + sec_names
121 elif mode in (_SHUTDOWN_NODES_PRI, _SHUTDOWN_NODES_PRI_BY_TAGS):
123 elif mode in (_SHUTDOWN_NODES_SEC, _SHUTDOWN_NODES_SEC_BY_TAGS):
126 raise errors.ProgrammerError("Unhandled shutdown type")
127 elif mode == _SHUTDOWN_INSTANCES:
129 raise errors.OpPrereqError("No instance names passed",
131 idata = client.QueryInstances(names, ["name"], False)
132 inames = [row[0] for row in idata]
133 elif mode == _SHUTDOWN_INSTANCES_BY_TAGS:
135 raise errors.OpPrereqError("No instance tags passed",
137 idata = client.QueryInstances([], ["name", "tags"], False)
138 inames = [row[0] for row in idata if set(row[1]).intersection(names)]
140 raise errors.OpPrereqError("Unknown mode '%s'" % mode, errors.ECODE_INVAL)
145 def _ConfirmOperation(inames, text, extra=""):
146 """Ask the user to confirm an operation on a list of instances.
148 This function is used to request confirmation for doing an operation
149 on a given list of instances.
152 @param inames: the list of names that we display when
153 we ask for confirmation
155 @param text: the operation that the user should confirm
156 (e.g. I{shutdown} or I{startup})
158 @return: True or False depending on user's confirmation.
162 msg = ("The %s will operate on %d instances.\n%s"
163 "Do you want to continue?" % (text, count, extra))
164 affected = ("\nAffected instances:\n" +
165 "\n".join([" %s" % name for name in inames]))
167 choices = [('y', True, 'Yes, execute the %s' % text),
168 ('n', False, 'No, abort the %s' % text)]
171 choices.insert(1, ('v', 'v', 'View the list of affected instances'))
176 choice = AskUser(ask, choices)
179 choice = AskUser(msg + affected, choices)
183 def _EnsureInstancesExist(client, names):
184 """Check for and ensure the given instance names exist.
186 This function will raise an OpPrereqError in case they don't
187 exist. Otherwise it will exit cleanly.
189 @type client: L{ganeti.luxi.Client}
190 @param client: the client to use for the query
192 @param names: the list of instance names to query
193 @raise errors.OpPrereqError: in case any instance is missing
196 # TODO: change LUQueryInstances to that it actually returns None
197 # instead of raising an exception, or devise a better mechanism
198 result = client.QueryInstances(names, ["name"], False)
199 for orig_name, row in zip(names, result):
201 raise errors.OpPrereqError("Instance '%s' does not exist" % orig_name,
205 def GenericManyOps(operation, fn):
206 """Generic multi-instance operations.
208 The will return a wrapper that processes the options and arguments
209 given, and uses the passed function to build the opcode needed for
210 the specific operation. Thus all the generic loop/confirmation code
211 is abstracted into this function.
214 def realfn(opts, args):
215 if opts.multi_mode is None:
216 opts.multi_mode = _SHUTDOWN_INSTANCES
218 inames = _ExpandMultiNames(opts.multi_mode, args, client=cl)
220 raise errors.OpPrereqError("Selection filter does not match"
221 " any instances", errors.ECODE_INVAL)
222 multi_on = opts.multi_mode != _SHUTDOWN_INSTANCES or len(inames) > 1
223 if not (opts.force_multi or not multi_on
224 or _ConfirmOperation(inames, operation)):
226 jex = JobExecutor(verbose=multi_on, cl=cl, opts=opts)
229 jex.QueueJob(name, op)
230 jex.WaitOrShow(not opts.submit_only)
235 def ListInstances(opts, args):
236 """List instances and their properties.
238 @param opts: the command line options selected by the user
240 @param args: should be an empty list
242 @return: the desired exit code
245 if opts.output is None:
246 selected_fields = _LIST_DEF_FIELDS
247 elif opts.output.startswith("+"):
248 selected_fields = _LIST_DEF_FIELDS + opts.output[1:].split(",")
250 selected_fields = opts.output.split(",")
252 output = GetClient().QueryInstances(args, selected_fields, opts.do_locking)
254 if not opts.no_headers:
256 "name": "Instance", "os": "OS", "pnode": "Primary_node",
257 "snodes": "Secondary_Nodes", "admin_state": "Autostart",
258 "oper_state": "Running",
259 "oper_ram": "Memory", "disk_template": "Disk_template",
260 "ip": "IP_address", "mac": "MAC_address",
261 "nic_mode": "NIC_Mode", "nic_link": "NIC_Link",
263 "sda_size": "Disk/0", "sdb_size": "Disk/1",
264 "disk_usage": "DiskUsage",
265 "status": "Status", "tags": "Tags",
266 "network_port": "Network_port",
267 "hv/kernel_path": "Kernel_path",
268 "hv/initrd_path": "Initrd_path",
269 "hv/boot_order": "Boot_order",
272 "hv/cdrom_image_path": "CDROM_image_path",
273 "hv/nic_type": "NIC_type",
274 "hv/disk_type": "Disk_type",
275 "hv/vnc_bind_address": "VNC_bind_address",
276 "serial_no": "SerialNo", "hypervisor": "Hypervisor",
277 "hvparams": "Hypervisor_parameters",
278 "be/memory": "Configured_memory",
281 "be/auto_balance": "Auto_balance",
282 "disk.count": "Disks", "disk.sizes": "Disk_sizes",
283 "nic.count": "NICs", "nic.ips": "NIC_IPs",
284 "nic.modes": "NIC_modes", "nic.links": "NIC_links",
285 "nic.bridges": "NIC_bridges", "nic.macs": "NIC_MACs",
286 "ctime": "CTime", "mtime": "MTime", "uuid": "UUID",
291 unitfields = ["be/memory", "oper_ram", "sd(a|b)_size", "disk\.size/.*"]
292 numfields = ["be/memory", "oper_ram", "sd(a|b)_size", "be/vcpus",
293 "serial_no", "(disk|nic)\.count", "disk\.size/.*"]
295 list_type_fields = ("tags", "disk.sizes", "nic.macs", "nic.ips",
296 "nic.modes", "nic.links", "nic.bridges")
297 # change raw values to nicer strings
299 for idx, field in enumerate(selected_fields):
301 if field == "snodes":
302 val = ",".join(val) or "-"
303 elif field == "admin_state":
308 elif field == "oper_state":
315 elif field == "oper_ram":
318 elif field == "sda_size" or field == "sdb_size":
321 elif field == "ctime" or field == "mtime":
322 val = utils.FormatTime(val)
323 elif field in list_type_fields:
324 val = ",".join(str(item) for item in val)
327 if opts.roman_integers and isinstance(val, int):
328 val = compat.TryToRoman(val)
331 data = GenerateTable(separator=opts.separator, headers=headers,
332 fields=selected_fields, unitfields=unitfields,
333 numfields=numfields, data=output, units=opts.units)
341 def AddInstance(opts, args):
342 """Add an instance to the cluster.
344 This is just a wrapper over GenericInstanceCreate.
347 return GenericInstanceCreate(constants.INSTANCE_CREATE, opts, args)
350 def BatchCreate(opts, args):
351 """Create instances using a definition file.
353 This function reads a json file with instances defined
357 "disk_size": [20480],
363 "primary_node": "firstnode",
364 "secondary_node": "secondnode",
365 "iallocator": "dumb"}
368 Note that I{primary_node} and I{secondary_node} have precedence over
371 @param opts: the command line options selected by the user
373 @param args: should contain one element, the json filename
375 @return: the desired exit code
378 _DEFAULT_SPECS = {"disk_size": [20 * 1024],
381 "primary_node": None,
382 "secondary_node": None,
389 "file_storage_dir": None,
390 "file_driver": 'loop'}
392 def _PopulateWithDefaults(spec):
393 """Returns a new hash combined with default values."""
394 mydict = _DEFAULT_SPECS.copy()
399 """Validate the instance specs."""
400 # Validate fields required under any circumstances
401 for required_field in ('os', 'template'):
402 if required_field not in spec:
403 raise errors.OpPrereqError('Required field "%s" is missing.' %
404 required_field, errors.ECODE_INVAL)
405 # Validate special fields
406 if spec['primary_node'] is not None:
407 if (spec['template'] in constants.DTS_NET_MIRROR and
408 spec['secondary_node'] is None):
409 raise errors.OpPrereqError('Template requires secondary node, but'
410 ' there was no secondary provided.',
412 elif spec['iallocator'] is None:
413 raise errors.OpPrereqError('You have to provide at least a primary_node'
414 ' or an iallocator.',
417 if (spec['hvparams'] and
418 not isinstance(spec['hvparams'], dict)):
419 raise errors.OpPrereqError('Hypervisor parameters must be a dict.',
422 json_filename = args[0]
424 instance_data = simplejson.loads(utils.ReadFile(json_filename))
425 except Exception, err: # pylint: disable-msg=W0703
426 ToStderr("Can't parse the instance definition file: %s" % str(err))
429 if not isinstance(instance_data, dict):
430 ToStderr("The instance definition file is not in dict format.")
433 jex = JobExecutor(opts=opts)
435 # Iterate over the instances and do:
436 # * Populate the specs with default value
437 # * Validate the instance specs
438 i_names = utils.NiceSort(instance_data.keys()) # pylint: disable-msg=E1103
440 specs = instance_data[name]
441 specs = _PopulateWithDefaults(specs)
444 hypervisor = specs['hypervisor']
445 hvparams = specs['hvparams']
448 for elem in specs['disk_size']:
450 size = utils.ParseUnit(elem)
451 except (TypeError, ValueError), err:
452 raise errors.OpPrereqError("Invalid disk size '%s' for"
454 (elem, name, err), errors.ECODE_INVAL)
455 disks.append({"size": size})
457 utils.ForceDictType(specs['backend'], constants.BES_PARAMETER_TYPES)
458 utils.ForceDictType(hvparams, constants.HVS_PARAMETER_TYPES)
461 for field in ('ip', 'mac', 'mode', 'link', 'bridge'):
465 tmp_nics[0][field] = specs[field]
467 if specs['nics'] is not None and tmp_nics:
468 raise errors.OpPrereqError("'nics' list incompatible with using"
469 " individual nic fields as well",
471 elif specs['nics'] is not None:
472 tmp_nics = specs['nics']
476 op = opcodes.OpCreateInstance(instance_name=name,
478 disk_template=specs['template'],
479 mode=constants.INSTANCE_CREATE,
481 force_variant=opts.force_variant,
482 pnode=specs['primary_node'],
483 snode=specs['secondary_node'],
485 start=specs['start'],
486 ip_check=specs['ip_check'],
487 name_check=specs['name_check'],
489 iallocator=specs['iallocator'],
490 hypervisor=hypervisor,
492 beparams=specs['backend'],
493 file_storage_dir=specs['file_storage_dir'],
494 file_driver=specs['file_driver'])
496 jex.QueueJob(name, op)
497 # we never want to wait, just show the submitted job IDs
498 jex.WaitOrShow(False)
503 def ReinstallInstance(opts, args):
504 """Reinstall an instance.
506 @param opts: the command line options selected by the user
508 @param args: should contain only one element, the name of the
509 instance to be reinstalled
511 @return: the desired exit code
514 # first, compute the desired name list
515 if opts.multi_mode is None:
516 opts.multi_mode = _SHUTDOWN_INSTANCES
518 inames = _ExpandMultiNames(opts.multi_mode, args)
520 raise errors.OpPrereqError("Selection filter does not match any instances",
523 # second, if requested, ask for an OS
524 if opts.select_os is True:
525 op = opcodes.OpDiagnoseOS(output_fields=["name", "valid", "variants"],
527 result = SubmitOpCode(op, opts=opts)
530 ToStdout("Can't get the OS list")
533 ToStdout("Available OS templates:")
536 for (name, valid, variants) in result:
538 for entry in CalculateOSNames(name, variants):
539 ToStdout("%3s: %s", number, entry)
540 choices.append(("%s" % number, entry, entry))
543 choices.append(('x', 'exit', 'Exit gnt-instance reinstall'))
544 selected = AskUser("Enter OS template number (or x to abort):",
547 if selected == 'exit':
548 ToStderr("User aborted reinstall, exiting")
555 # third, get confirmation: multi-reinstall requires --force-multi
556 # *and* --force, single-reinstall just --force
557 multi_on = opts.multi_mode != _SHUTDOWN_INSTANCES or len(inames) > 1
559 warn_msg = "Note: this will remove *all* data for the below instances!\n"
560 if not ((opts.force_multi and opts.force) or
561 _ConfirmOperation(inames, "reinstall", extra=warn_msg)):
565 usertext = ("This will reinstall the instance %s and remove"
566 " all data. Continue?") % inames[0]
567 if not AskUser(usertext):
570 jex = JobExecutor(verbose=multi_on, opts=opts)
571 for instance_name in inames:
572 op = opcodes.OpReinstallInstance(instance_name=instance_name,
574 force_variant=opts.force_variant)
575 jex.QueueJob(instance_name, op)
577 jex.WaitOrShow(not opts.submit_only)
581 def RemoveInstance(opts, args):
582 """Remove an instance.
584 @param opts: the command line options selected by the user
586 @param args: should contain only one element, the name of
587 the instance to be removed
589 @return: the desired exit code
592 instance_name = args[0]
597 _EnsureInstancesExist(cl, [instance_name])
599 usertext = ("This will remove the volumes of the instance %s"
600 " (including mirrors), thus removing all the data"
601 " of the instance. Continue?") % instance_name
602 if not AskUser(usertext):
605 op = opcodes.OpRemoveInstance(instance_name=instance_name,
606 ignore_failures=opts.ignore_failures,
607 shutdown_timeout=opts.shutdown_timeout)
608 SubmitOrSend(op, opts, cl=cl)
612 def RenameInstance(opts, args):
613 """Rename an instance.
615 @param opts: the command line options selected by the user
617 @param args: should contain two elements, the old and the
620 @return: the desired exit code
623 if not opts.check_name:
624 if not AskUser("As you disabled the check of the DNS entry, please verify"
625 " that '%s' is a FQDN. Continue?" % args[1]):
628 op = opcodes.OpRenameInstance(instance_name=args[0],
630 ignore_ip=not opts.ip_check,
631 check_name=opts.check_name)
632 SubmitOrSend(op, opts)
636 def ActivateDisks(opts, args):
637 """Activate an instance's disks.
639 This serves two purposes:
640 - it allows (as long as the instance is not running)
641 mounting the disks and modifying them from the node
642 - it repairs inactive secondary drbds
644 @param opts: the command line options selected by the user
646 @param args: should contain only one element, the instance name
648 @return: the desired exit code
651 instance_name = args[0]
652 op = opcodes.OpActivateInstanceDisks(instance_name=instance_name,
653 ignore_size=opts.ignore_size)
654 disks_info = SubmitOrSend(op, opts)
655 for host, iname, nname in disks_info:
656 ToStdout("%s:%s:%s", host, iname, nname)
660 def DeactivateDisks(opts, args):
661 """Deactivate an instance's disks.
663 This function takes the instance name, looks for its primary node
664 and the tries to shutdown its block devices on that node.
666 @param opts: the command line options selected by the user
668 @param args: should contain only one element, the instance name
670 @return: the desired exit code
673 instance_name = args[0]
674 op = opcodes.OpDeactivateInstanceDisks(instance_name=instance_name)
675 SubmitOrSend(op, opts)
679 def RecreateDisks(opts, args):
680 """Recreate an instance's disks.
682 @param opts: the command line options selected by the user
684 @param args: should contain only one element, the instance name
686 @return: the desired exit code
689 instance_name = args[0]
692 opts.disks = [int(v) for v in opts.disks.split(",")]
693 except (ValueError, TypeError), err:
694 ToStderr("Invalid disks value: %s" % str(err))
699 op = opcodes.OpRecreateInstanceDisks(instance_name=instance_name,
701 SubmitOrSend(op, opts)
705 def GrowDisk(opts, args):
706 """Grow an instance's disks.
708 @param opts: the command line options selected by the user
710 @param args: should contain two elements, the instance name
711 whose disks we grow and the disk name, e.g. I{sda}
713 @return: the desired exit code
720 except (TypeError, ValueError), err:
721 raise errors.OpPrereqError("Invalid disk index: %s" % str(err),
723 amount = utils.ParseUnit(args[2])
724 op = opcodes.OpGrowDisk(instance_name=instance, disk=disk, amount=amount,
725 wait_for_sync=opts.wait_for_sync)
726 SubmitOrSend(op, opts)
730 def _StartupInstance(name, opts):
731 """Startup instances.
733 This returns the opcode to start an instance, and its decorator will
734 wrap this into a loop starting all desired instances.
736 @param name: the name of the instance to act on
737 @param opts: the command line options selected by the user
738 @return: the opcode needed for the operation
741 op = opcodes.OpStartupInstance(instance_name=name,
743 # do not add these parameters to the opcode unless they're defined
745 op.hvparams = opts.hvparams
747 op.beparams = opts.beparams
751 def _RebootInstance(name, opts):
752 """Reboot instance(s).
754 This returns the opcode to reboot an instance, and its decorator
755 will wrap this into a loop rebooting all desired instances.
757 @param name: the name of the instance to act on
758 @param opts: the command line options selected by the user
759 @return: the opcode needed for the operation
762 return opcodes.OpRebootInstance(instance_name=name,
763 reboot_type=opts.reboot_type,
764 ignore_secondaries=opts.ignore_secondaries,
765 shutdown_timeout=opts.shutdown_timeout)
768 def _ShutdownInstance(name, opts):
769 """Shutdown an instance.
771 This returns the opcode to shutdown an instance, and its decorator
772 will wrap this into a loop shutting down all desired instances.
774 @param name: the name of the instance to act on
775 @param opts: the command line options selected by the user
776 @return: the opcode needed for the operation
779 return opcodes.OpShutdownInstance(instance_name=name,
780 timeout=opts.timeout)
783 def ReplaceDisks(opts, args):
784 """Replace the disks of an instance
786 @param opts: the command line options selected by the user
788 @param args: should contain only one element, the instance name
790 @return: the desired exit code
793 new_2ndary = opts.dst_node
794 iallocator = opts.iallocator
795 if opts.disks is None:
799 disks = [int(i) for i in opts.disks.split(",")]
800 except (TypeError, ValueError), err:
801 raise errors.OpPrereqError("Invalid disk index passed: %s" % str(err),
803 cnt = [opts.on_primary, opts.on_secondary, opts.auto,
804 new_2ndary is not None, iallocator is not None].count(True)
806 raise errors.OpPrereqError("One and only one of the -p, -s, -a, -n and -i"
807 " options must be passed", errors.ECODE_INVAL)
808 elif opts.on_primary:
809 mode = constants.REPLACE_DISK_PRI
810 elif opts.on_secondary:
811 mode = constants.REPLACE_DISK_SEC
813 mode = constants.REPLACE_DISK_AUTO
815 raise errors.OpPrereqError("Cannot specify disks when using automatic"
816 " mode", errors.ECODE_INVAL)
817 elif new_2ndary is not None or iallocator is not None:
819 mode = constants.REPLACE_DISK_CHG
821 op = opcodes.OpReplaceDisks(instance_name=args[0], disks=disks,
822 remote_node=new_2ndary, mode=mode,
823 iallocator=iallocator,
824 early_release=opts.early_release)
825 SubmitOrSend(op, opts)
829 def FailoverInstance(opts, args):
830 """Failover an instance.
832 The failover is done by shutting it down on its present node and
833 starting it on the secondary.
835 @param opts: the command line options selected by the user
837 @param args: should contain only one element, the instance name
839 @return: the desired exit code
843 instance_name = args[0]
847 _EnsureInstancesExist(cl, [instance_name])
849 usertext = ("Failover will happen to image %s."
850 " This requires a shutdown of the instance. Continue?" %
852 if not AskUser(usertext):
855 op = opcodes.OpFailoverInstance(instance_name=instance_name,
856 ignore_consistency=opts.ignore_consistency,
857 shutdown_timeout=opts.shutdown_timeout)
858 SubmitOrSend(op, opts, cl=cl)
862 def MigrateInstance(opts, args):
863 """Migrate an instance.
865 The migrate is done without shutdown.
867 @param opts: the command line options selected by the user
869 @param args: should contain only one element, the instance name
871 @return: the desired exit code
875 instance_name = args[0]
879 _EnsureInstancesExist(cl, [instance_name])
882 usertext = ("Instance %s will be recovered from a failed migration."
883 " Note that the migration procedure (including cleanup)" %
886 usertext = ("Instance %s will be migrated. Note that migration" %
888 usertext += (" might impact the instance if anything goes wrong"
889 " (e.g. due to bugs in the hypervisor). Continue?")
890 if not AskUser(usertext):
893 op = opcodes.OpMigrateInstance(instance_name=instance_name, live=opts.live,
894 cleanup=opts.cleanup)
895 SubmitOpCode(op, cl=cl, opts=opts)
899 def MoveInstance(opts, args):
902 @param opts: the command line options selected by the user
904 @param args: should contain only one element, the instance name
906 @return: the desired exit code
910 instance_name = args[0]
914 usertext = ("Instance %s will be moved."
915 " This requires a shutdown of the instance. Continue?" %
917 if not AskUser(usertext):
920 op = opcodes.OpMoveInstance(instance_name=instance_name,
921 target_node=opts.node,
922 shutdown_timeout=opts.shutdown_timeout)
923 SubmitOrSend(op, opts, cl=cl)
927 def ConnectToInstanceConsole(opts, args):
928 """Connect to the console of an instance.
930 @param opts: the command line options selected by the user
932 @param args: should contain only one element, the instance name
934 @return: the desired exit code
937 instance_name = args[0]
939 op = opcodes.OpConnectConsole(instance_name=instance_name)
940 cmd = SubmitOpCode(op, opts=opts)
942 if opts.show_command:
943 ToStdout("%s", utils.ShellQuoteArgs(cmd))
946 os.execvp(cmd[0], cmd)
948 ToStderr("Can't run console command %s with arguments:\n'%s'",
949 cmd[0], " ".join(cmd))
950 os._exit(1) # pylint: disable-msg=W0212
953 def _FormatLogicalID(dev_type, logical_id, roman):
954 """Formats the logical_id of a disk.
957 if dev_type == constants.LD_DRBD8:
958 node_a, node_b, port, minor_a, minor_b, key = logical_id
960 ("nodeA", "%s, minor=%s" % (node_a, compat.TryToRoman(minor_a,
962 ("nodeB", "%s, minor=%s" % (node_b, compat.TryToRoman(minor_b,
964 ("port", compat.TryToRoman(port, convert=roman)),
967 elif dev_type == constants.LD_LV:
968 vg_name, lv_name = logical_id
969 data = ["%s/%s" % (vg_name, lv_name)]
971 data = [str(logical_id)]
976 def _FormatBlockDevInfo(idx, top_level, dev, static, roman):
977 """Show block device information.
979 This is only used by L{ShowInstanceConfig}, but it's too big to be
980 left for an inline definition.
983 @param idx: the index of the current disk
984 @type top_level: boolean
985 @param top_level: if this a top-level disk?
987 @param dev: dictionary with disk information
988 @type static: boolean
989 @param static: wheter the device information doesn't contain
990 runtime information but only static data
992 @param roman: whether to try to use roman integers
993 @return: a list of either strings, tuples or lists
994 (which should be formatted at a higher indent level)
997 def helper(dtype, status):
998 """Format one line for physical device status.
1001 @param dtype: a constant from the L{constants.LDS_BLOCK} set
1003 @param status: a tuple as returned from L{backend.FindBlockDevice}
1004 @return: the string representing the status
1010 (path, major, minor, syncp, estt, degr, ldisk_status) = status
1012 major_string = "N/A"
1014 major_string = str(compat.TryToRoman(major, convert=roman))
1017 minor_string = "N/A"
1019 minor_string = str(compat.TryToRoman(minor, convert=roman))
1021 txt += ("%s (%s:%s)" % (path, major_string, minor_string))
1022 if dtype in (constants.LD_DRBD8, ):
1023 if syncp is not None:
1024 sync_text = "*RECOVERING* %5.2f%%," % syncp
1026 sync_text += " ETA %ss" % compat.TryToRoman(estt, convert=roman)
1028 sync_text += " ETA unknown"
1030 sync_text = "in sync"
1032 degr_text = "*DEGRADED*"
1035 if ldisk_status == constants.LDS_FAULTY:
1036 ldisk_text = " *MISSING DISK*"
1037 elif ldisk_status == constants.LDS_UNKNOWN:
1038 ldisk_text = " *UNCERTAIN STATE*"
1041 txt += (" %s, status %s%s" % (sync_text, degr_text, ldisk_text))
1042 elif dtype == constants.LD_LV:
1043 if ldisk_status == constants.LDS_FAULTY:
1044 ldisk_text = " *FAILED* (failed drive?)"
1052 if dev["iv_name"] is not None:
1053 txt = dev["iv_name"]
1055 txt = "disk %s" % compat.TryToRoman(idx, convert=roman)
1057 txt = "child %s" % compat.TryToRoman(idx, convert=roman)
1058 if isinstance(dev["size"], int):
1059 nice_size = utils.FormatUnit(dev["size"], "h")
1061 nice_size = dev["size"]
1062 d1 = ["- %s: %s, size %s" % (txt, dev["dev_type"], nice_size)]
1065 data.append(("access mode", dev["mode"]))
1066 if dev["logical_id"] is not None:
1068 l_id = _FormatLogicalID(dev["dev_type"], dev["logical_id"], roman)
1070 l_id = [str(dev["logical_id"])]
1072 data.append(("logical_id", l_id[0]))
1075 elif dev["physical_id"] is not None:
1076 data.append("physical_id:")
1077 data.append([dev["physical_id"]])
1079 data.append(("on primary", helper(dev["dev_type"], dev["pstatus"])))
1080 if dev["sstatus"] and not static:
1081 data.append(("on secondary", helper(dev["dev_type"], dev["sstatus"])))
1084 data.append("child devices:")
1085 for c_idx, child in enumerate(dev["children"]):
1086 data.append(_FormatBlockDevInfo(c_idx, False, child, static, roman))
1091 def _FormatList(buf, data, indent_level):
1092 """Formats a list of data at a given indent level.
1094 If the element of the list is:
1095 - a string, it is simply formatted as is
1096 - a tuple, it will be split into key, value and the all the
1097 values in a list will be aligned all at the same start column
1098 - a list, will be recursively formatted
1101 @param buf: the buffer into which we write the output
1102 @param data: the list to format
1103 @type indent_level: int
1104 @param indent_level: the indent level to format at
1107 max_tlen = max([len(elem[0]) for elem in data
1108 if isinstance(elem, tuple)] or [0])
1110 if isinstance(elem, basestring):
1111 buf.write("%*s%s\n" % (2*indent_level, "", elem))
1112 elif isinstance(elem, tuple):
1114 spacer = "%*s" % (max_tlen - len(key), "")
1115 buf.write("%*s%s:%s %s\n" % (2*indent_level, "", key, spacer, value))
1116 elif isinstance(elem, list):
1117 _FormatList(buf, elem, indent_level+1)
1120 def _FormatParameterDict(buf, per_inst, actual):
1121 """Formats a parameter dictionary.
1123 @type buf: L{StringIO}
1124 @param buf: the buffer into which to write
1125 @type per_inst: dict
1126 @param per_inst: the instance's own parameters
1128 @param actual: the current parameter set (including defaults)
1131 for key in sorted(actual):
1132 val = per_inst.get(key, "default (%s)" % actual[key])
1133 buf.write(" - %s: %s\n" % (key, val))
1135 def ShowInstanceConfig(opts, args):
1136 """Compute instance run-time status.
1138 @param opts: the command line options selected by the user
1140 @param args: either an empty list, and then we query all
1141 instances, or should contain a list of instance names
1143 @return: the desired exit code
1146 if not args and not opts.show_all:
1147 ToStderr("No instance selected."
1148 " Please pass in --all if you want to query all instances.\n"
1149 "Note that this can take a long time on a big cluster.")
1151 elif args and opts.show_all:
1152 ToStderr("Cannot use --all if you specify instance names.")
1156 op = opcodes.OpQueryInstanceData(instances=args, static=opts.static)
1157 result = SubmitOpCode(op, opts=opts)
1159 ToStdout("No instances.")
1164 for instance_name in result:
1165 instance = result[instance_name]
1166 buf.write("Instance name: %s\n" % instance["name"])
1167 buf.write("UUID: %s\n" % instance["uuid"])
1168 buf.write("Serial number: %s\n" %
1169 compat.TryToRoman(instance["serial_no"],
1170 convert=opts.roman_integers))
1171 buf.write("Creation time: %s\n" % utils.FormatTime(instance["ctime"]))
1172 buf.write("Modification time: %s\n" % utils.FormatTime(instance["mtime"]))
1173 buf.write("State: configured to be %s" % instance["config_state"])
1175 buf.write(", actual state is %s" % instance["run_state"])
1177 ##buf.write("Considered for memory checks in cluster verify: %s\n" %
1178 ## instance["auto_balance"])
1179 buf.write(" Nodes:\n")
1180 buf.write(" - primary: %s\n" % instance["pnode"])
1181 buf.write(" - secondaries: %s\n" % utils.CommaJoin(instance["snodes"]))
1182 buf.write(" Operating system: %s\n" % instance["os"])
1183 _FormatParameterDict(buf, instance["os_instance"], instance["os_actual"])
1184 if instance.has_key("network_port"):
1185 buf.write(" Allocated network port: %s\n" %
1186 compat.TryToRoman(instance["network_port"],
1187 convert=opts.roman_integers))
1188 buf.write(" Hypervisor: %s\n" % instance["hypervisor"])
1190 # custom VNC console information
1191 vnc_bind_address = instance["hv_actual"].get(constants.HV_VNC_BIND_ADDRESS,
1193 if vnc_bind_address:
1194 port = instance["network_port"]
1195 display = int(port) - constants.VNC_BASE_PORT
1196 if display > 0 and vnc_bind_address == constants.IP4_ADDRESS_ANY:
1197 vnc_console_port = "%s:%s (display %s)" % (instance["pnode"],
1200 elif display > 0 and utils.IsValidIP4(vnc_bind_address):
1201 vnc_console_port = ("%s:%s (node %s) (display %s)" %
1202 (vnc_bind_address, port,
1203 instance["pnode"], display))
1205 # vnc bind address is a file
1206 vnc_console_port = "%s:%s" % (instance["pnode"],
1208 buf.write(" - console connection: vnc to %s\n" % vnc_console_port)
1210 _FormatParameterDict(buf, instance["hv_instance"], instance["hv_actual"])
1211 buf.write(" Hardware:\n")
1212 buf.write(" - VCPUs: %s\n" %
1213 compat.TryToRoman(instance["be_actual"][constants.BE_VCPUS],
1214 convert=opts.roman_integers))
1215 buf.write(" - memory: %sMiB\n" %
1216 compat.TryToRoman(instance["be_actual"][constants.BE_MEMORY],
1217 convert=opts.roman_integers))
1218 buf.write(" - NICs:\n")
1219 for idx, (ip, mac, mode, link) in enumerate(instance["nics"]):
1220 buf.write(" - nic/%d: MAC: %s, IP: %s, mode: %s, link: %s\n" %
1221 (idx, mac, ip, mode, link))
1222 buf.write(" Disks:\n")
1224 for idx, device in enumerate(instance["disks"]):
1225 _FormatList(buf, _FormatBlockDevInfo(idx, True, device, opts.static,
1226 opts.roman_integers), 2)
1228 ToStdout(buf.getvalue().rstrip('\n'))
1232 def SetInstanceParams(opts, args):
1233 """Modifies an instance.
1235 All parameters take effect only at the next restart of the instance.
1237 @param opts: the command line options selected by the user
1239 @param args: should contain only one element, the instance name
1241 @return: the desired exit code
1244 if not (opts.nics or opts.disks or opts.disk_template or
1245 opts.hvparams or opts.beparams or opts.os or opts.osparams):
1246 ToStderr("Please give at least one of the parameters.")
1249 for param in opts.beparams:
1250 if isinstance(opts.beparams[param], basestring):
1251 if opts.beparams[param].lower() == "default":
1252 opts.beparams[param] = constants.VALUE_DEFAULT
1254 utils.ForceDictType(opts.beparams, constants.BES_PARAMETER_TYPES,
1255 allowed_values=[constants.VALUE_DEFAULT])
1257 for param in opts.hvparams:
1258 if isinstance(opts.hvparams[param], basestring):
1259 if opts.hvparams[param].lower() == "default":
1260 opts.hvparams[param] = constants.VALUE_DEFAULT
1262 utils.ForceDictType(opts.hvparams, constants.HVS_PARAMETER_TYPES,
1263 allowed_values=[constants.VALUE_DEFAULT])
1265 for idx, (nic_op, nic_dict) in enumerate(opts.nics):
1267 nic_op = int(nic_op)
1268 opts.nics[idx] = (nic_op, nic_dict)
1269 except (TypeError, ValueError):
1272 for idx, (disk_op, disk_dict) in enumerate(opts.disks):
1274 disk_op = int(disk_op)
1275 opts.disks[idx] = (disk_op, disk_dict)
1276 except (TypeError, ValueError):
1278 if disk_op == constants.DDM_ADD:
1279 if 'size' not in disk_dict:
1280 raise errors.OpPrereqError("Missing required parameter 'size'",
1282 disk_dict['size'] = utils.ParseUnit(disk_dict['size'])
1284 if (opts.disk_template and
1285 opts.disk_template in constants.DTS_NET_MIRROR and
1287 ToStderr("Changing the disk template to a mirrored one requires"
1288 " specifying a secondary node")
1291 op = opcodes.OpSetInstanceParams(instance_name=args[0],
1294 disk_template=opts.disk_template,
1295 remote_node=opts.node,
1296 hvparams=opts.hvparams,
1297 beparams=opts.beparams,
1299 osparams=opts.osparams,
1300 force_variant=opts.force_variant,
1303 # even if here we process the result, we allow submit only
1304 result = SubmitOrSend(op, opts)
1307 ToStdout("Modified instance %s", args[0])
1308 for param, data in result:
1309 ToStdout(" - %-5s -> %s", param, data)
1310 ToStdout("Please don't forget that most parameters take effect"
1311 " only at the next start of the instance.")
1315 # multi-instance selection options
1316 m_force_multi = cli_option("--force-multiple", dest="force_multi",
1317 help="Do not ask for confirmation when more than"
1318 " one instance is affected",
1319 action="store_true", default=False)
1321 m_pri_node_opt = cli_option("--primary", dest="multi_mode",
1322 help="Filter by nodes (primary only)",
1323 const=_SHUTDOWN_NODES_PRI, action="store_const")
1325 m_sec_node_opt = cli_option("--secondary", dest="multi_mode",
1326 help="Filter by nodes (secondary only)",
1327 const=_SHUTDOWN_NODES_SEC, action="store_const")
1329 m_node_opt = cli_option("--node", dest="multi_mode",
1330 help="Filter by nodes (primary and secondary)",
1331 const=_SHUTDOWN_NODES_BOTH, action="store_const")
1333 m_clust_opt = cli_option("--all", dest="multi_mode",
1334 help="Select all instances in the cluster",
1335 const=_SHUTDOWN_CLUSTER, action="store_const")
1337 m_inst_opt = cli_option("--instance", dest="multi_mode",
1338 help="Filter by instance name [default]",
1339 const=_SHUTDOWN_INSTANCES, action="store_const")
1341 m_node_tags_opt = cli_option("--node-tags", dest="multi_mode",
1342 help="Filter by node tag",
1343 const=_SHUTDOWN_NODES_BOTH_BY_TAGS,
1344 action="store_const")
1346 m_pri_node_tags_opt = cli_option("--pri-node-tags", dest="multi_mode",
1347 help="Filter by primary node tag",
1348 const=_SHUTDOWN_NODES_PRI_BY_TAGS,
1349 action="store_const")
1351 m_sec_node_tags_opt = cli_option("--sec-node-tags", dest="multi_mode",
1352 help="Filter by secondary node tag",
1353 const=_SHUTDOWN_NODES_SEC_BY_TAGS,
1354 action="store_const")
1356 m_inst_tags_opt = cli_option("--tags", dest="multi_mode",
1357 help="Filter by instance tag",
1358 const=_SHUTDOWN_INSTANCES_BY_TAGS,
1359 action="store_const")
1361 # this is defined separately due to readability only
1367 FILESTORE_DRIVER_OPT,
1387 AddInstance, [ArgHost(min=1, max=1)], add_opts,
1388 "[...] -t disk-type -n node[:secondary-node] -o os-type <name>",
1389 "Creates and adds a new instance to the cluster"),
1391 BatchCreate, [ArgFile(min=1, max=1)], [],
1393 "Create a bunch of instances based on specs in the file."),
1395 ConnectToInstanceConsole, ARGS_ONE_INSTANCE,
1397 "[--show-cmd] <instance>", "Opens a console on the specified instance"),
1399 FailoverInstance, ARGS_ONE_INSTANCE,
1400 [FORCE_OPT, IGNORE_CONSIST_OPT, SUBMIT_OPT, SHUTDOWN_TIMEOUT_OPT],
1401 "[-f] <instance>", "Stops the instance and starts it on the backup node,"
1402 " using the remote mirror (only for instances of type drbd)"),
1404 MigrateInstance, ARGS_ONE_INSTANCE,
1405 [FORCE_OPT, NONLIVE_OPT, CLEANUP_OPT],
1406 "[-f] <instance>", "Migrate instance to its secondary node"
1407 " (only for instances of type drbd)"),
1409 MoveInstance, ARGS_ONE_INSTANCE,
1410 [FORCE_OPT, SUBMIT_OPT, SINGLE_NODE_OPT, SHUTDOWN_TIMEOUT_OPT],
1411 "[-f] <instance>", "Move instance to an arbitrary node"
1412 " (only for instances of type file and lv)"),
1414 ShowInstanceConfig, ARGS_MANY_INSTANCES,
1415 [STATIC_OPT, ALL_OPT, ROMAN_OPT],
1416 "[-s] {--all | <instance>...}",
1417 "Show information on the specified instance(s)"),
1419 ListInstances, ARGS_MANY_INSTANCES,
1420 [NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT, SYNC_OPT, ROMAN_OPT],
1422 "Lists the instances and their status. The available fields are"
1423 " (see the man page for details): status, oper_state, oper_ram,"
1424 " name, os, pnode, snodes, admin_state, admin_ram, disk_template,"
1425 " ip, mac, nic_mode, nic_link, sda_size, sdb_size, vcpus, serial_no,"
1426 " nic.count, nic.mac/N, nic.ip/N, nic.mode/N, nic.link/N,"
1427 " nic.macs, nic.ips, nic.modes, nic.links,"
1428 " disk.count, disk.size/N, disk.sizes,"
1429 " hv/NAME, be/memory, be/vcpus, be/auto_balance,"
1431 " The default field"
1432 " list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS),
1435 ReinstallInstance, [ArgInstance()],
1436 [FORCE_OPT, OS_OPT, FORCE_VARIANT_OPT, m_force_multi, m_node_opt,
1437 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, m_node_tags_opt,
1438 m_pri_node_tags_opt, m_sec_node_tags_opt, m_inst_tags_opt, SELECT_OS_OPT,
1440 "[-f] <instance>", "Reinstall a stopped instance"),
1442 RemoveInstance, ARGS_ONE_INSTANCE,
1443 [FORCE_OPT, SHUTDOWN_TIMEOUT_OPT, IGNORE_FAILURES_OPT, SUBMIT_OPT],
1444 "[-f] <instance>", "Shuts down the instance and removes it"),
1447 [ArgInstance(min=1, max=1), ArgHost(min=1, max=1)],
1448 [NOIPCHECK_OPT, NONAMECHECK_OPT, SUBMIT_OPT],
1449 "<instance> <new_name>", "Rename the instance"),
1451 ReplaceDisks, ARGS_ONE_INSTANCE,
1452 [AUTO_REPLACE_OPT, DISKIDX_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT,
1453 NEW_SECONDARY_OPT, ON_PRIMARY_OPT, ON_SECONDARY_OPT, SUBMIT_OPT],
1454 "[-s|-p|-n NODE|-I NAME] <instance>",
1455 "Replaces all disks for the instance"),
1457 SetInstanceParams, ARGS_ONE_INSTANCE,
1458 [BACKEND_OPT, DISK_OPT, FORCE_OPT, HVOPTS_OPT, NET_OPT, SUBMIT_OPT,
1459 DISK_TEMPLATE_OPT, SINGLE_NODE_OPT, OS_OPT, FORCE_VARIANT_OPT,
1461 "<instance>", "Alters the parameters of an instance"),
1463 GenericManyOps("shutdown", _ShutdownInstance), [ArgInstance()],
1464 [m_node_opt, m_pri_node_opt, m_sec_node_opt, m_clust_opt,
1465 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1466 m_inst_tags_opt, m_inst_opt, m_force_multi, TIMEOUT_OPT, SUBMIT_OPT],
1467 "<instance>", "Stops an instance"),
1469 GenericManyOps("startup", _StartupInstance), [ArgInstance()],
1470 [FORCE_OPT, m_force_multi, m_node_opt, m_pri_node_opt, m_sec_node_opt,
1471 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1472 m_inst_tags_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT, HVOPTS_OPT,
1474 "<instance>", "Starts an instance"),
1476 GenericManyOps("reboot", _RebootInstance), [ArgInstance()],
1477 [m_force_multi, REBOOT_TYPE_OPT, IGNORE_SECONDARIES_OPT, m_node_opt,
1478 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT,
1479 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1480 m_inst_tags_opt, SHUTDOWN_TIMEOUT_OPT],
1481 "<instance>", "Reboots an instance"),
1483 ActivateDisks, ARGS_ONE_INSTANCE, [SUBMIT_OPT, IGNORE_SIZE_OPT],
1484 "<instance>", "Activate an instance's disks"),
1485 'deactivate-disks': (
1486 DeactivateDisks, ARGS_ONE_INSTANCE, [SUBMIT_OPT],
1487 "<instance>", "Deactivate an instance's disks"),
1489 RecreateDisks, ARGS_ONE_INSTANCE, [SUBMIT_OPT, DISKIDX_OPT],
1490 "<instance>", "Recreate an instance's disks"),
1493 [ArgInstance(min=1, max=1), ArgUnknown(min=1, max=1),
1494 ArgUnknown(min=1, max=1)],
1495 [SUBMIT_OPT, NWSYNC_OPT],
1496 "<instance> <disk> <size>", "Grow an instance's disk"),
1498 ListTags, ARGS_ONE_INSTANCE, [],
1499 "<instance_name>", "List the tags of the given instance"),
1501 AddTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1503 "<instance_name> tag...", "Add tags to the given instance"),
1505 RemoveTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1507 "<instance_name> tag...", "Remove tags from given instance"),
1510 #: dictionary with aliases for commands
1512 'activate_block_devs': 'activate-disks',
1513 'replace_disks': 'replace-disks',
1519 if __name__ == '__main__':
1520 sys.exit(GenericMain(commands, aliases=aliases,
1521 override={"tag_type": constants.TAG_INSTANCE}))