4 # Copyright (C) 2006, 2007, 2008, 2009, 2010 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
30 from cStringIO import StringIO
32 from ganeti.cli import *
33 from ganeti import opcodes
34 from ganeti import constants
35 from ganeti import compat
36 from ganeti import utils
37 from ganeti import errors
38 from ganeti import netutils
41 _SHUTDOWN_CLUSTER = "cluster"
42 _SHUTDOWN_NODES_BOTH = "nodes"
43 _SHUTDOWN_NODES_PRI = "nodes-pri"
44 _SHUTDOWN_NODES_SEC = "nodes-sec"
45 _SHUTDOWN_NODES_BOTH_BY_TAGS = "nodes-by-tags"
46 _SHUTDOWN_NODES_PRI_BY_TAGS = "nodes-pri-by-tags"
47 _SHUTDOWN_NODES_SEC_BY_TAGS = "nodes-sec-by-tags"
48 _SHUTDOWN_INSTANCES = "instances"
49 _SHUTDOWN_INSTANCES_BY_TAGS = "instances-by-tags"
51 _SHUTDOWN_NODES_TAGS_MODES = (
52 _SHUTDOWN_NODES_BOTH_BY_TAGS,
53 _SHUTDOWN_NODES_PRI_BY_TAGS,
54 _SHUTDOWN_NODES_SEC_BY_TAGS)
59 #: default list of options for L{ListInstances}
61 "name", "hypervisor", "os", "pnode", "status", "oper_ram",
65 def _ExpandMultiNames(mode, names, client=None):
66 """Expand the given names using the passed mode.
68 For _SHUTDOWN_CLUSTER, all instances will be returned. For
69 _SHUTDOWN_NODES_PRI/SEC, all instances having those nodes as
70 primary/secondary will be returned. For _SHUTDOWN_NODES_BOTH, all
71 instances having those nodes as either primary or secondary will be
72 returned. For _SHUTDOWN_INSTANCES, the given instances will be
75 @param mode: one of L{_SHUTDOWN_CLUSTER}, L{_SHUTDOWN_NODES_BOTH},
76 L{_SHUTDOWN_NODES_PRI}, L{_SHUTDOWN_NODES_SEC} or
77 L{_SHUTDOWN_INSTANCES}
78 @param names: a list of names; for cluster, it must be empty,
79 and for node and instance it must be a list of valid item
80 names (short names are valid as usual, e.g. node1 instead of
83 @return: the list of names after the expansion
84 @raise errors.ProgrammerError: for unknown selection type
85 @raise errors.OpPrereqError: for invalid input parameters
88 # pylint: disable-msg=W0142
92 if mode == _SHUTDOWN_CLUSTER:
94 raise errors.OpPrereqError("Cluster filter mode takes no arguments",
96 idata = client.QueryInstances([], ["name"], False)
97 inames = [row[0] for row in idata]
99 elif mode in (_SHUTDOWN_NODES_BOTH,
101 _SHUTDOWN_NODES_SEC) + _SHUTDOWN_NODES_TAGS_MODES:
102 if mode in _SHUTDOWN_NODES_TAGS_MODES:
104 raise errors.OpPrereqError("No node tags passed", errors.ECODE_INVAL)
105 ndata = client.QueryNodes([], ["name", "pinst_list",
106 "sinst_list", "tags"], False)
107 ndata = [row for row in ndata if set(row[3]).intersection(names)]
110 raise errors.OpPrereqError("No node names passed", errors.ECODE_INVAL)
111 ndata = client.QueryNodes(names, ["name", "pinst_list", "sinst_list"],
114 ipri = [row[1] for row in ndata]
115 pri_names = list(itertools.chain(*ipri))
116 isec = [row[2] for row in ndata]
117 sec_names = list(itertools.chain(*isec))
118 if mode in (_SHUTDOWN_NODES_BOTH, _SHUTDOWN_NODES_BOTH_BY_TAGS):
119 inames = pri_names + sec_names
120 elif mode in (_SHUTDOWN_NODES_PRI, _SHUTDOWN_NODES_PRI_BY_TAGS):
122 elif mode in (_SHUTDOWN_NODES_SEC, _SHUTDOWN_NODES_SEC_BY_TAGS):
125 raise errors.ProgrammerError("Unhandled shutdown type")
126 elif mode == _SHUTDOWN_INSTANCES:
128 raise errors.OpPrereqError("No instance names passed",
130 idata = client.QueryInstances(names, ["name"], False)
131 inames = [row[0] for row in idata]
132 elif mode == _SHUTDOWN_INSTANCES_BY_TAGS:
134 raise errors.OpPrereqError("No instance tags passed",
136 idata = client.QueryInstances([], ["name", "tags"], False)
137 inames = [row[0] for row in idata if set(row[1]).intersection(names)]
139 raise errors.OpPrereqError("Unknown mode '%s'" % mode, errors.ECODE_INVAL)
144 def _ConfirmOperation(inames, text, extra=""):
145 """Ask the user to confirm an operation on a list of instances.
147 This function is used to request confirmation for doing an operation
148 on a given list of instances.
151 @param inames: the list of names that we display when
152 we ask for confirmation
154 @param text: the operation that the user should confirm
155 (e.g. I{shutdown} or I{startup})
157 @return: True or False depending on user's confirmation.
161 msg = ("The %s will operate on %d instances.\n%s"
162 "Do you want to continue?" % (text, count, extra))
163 affected = ("\nAffected instances:\n" +
164 "\n".join([" %s" % name for name in inames]))
166 choices = [('y', True, 'Yes, execute the %s' % text),
167 ('n', False, 'No, abort the %s' % text)]
170 choices.insert(1, ('v', 'v', 'View the list of affected instances'))
175 choice = AskUser(ask, choices)
178 choice = AskUser(msg + affected, choices)
182 def _EnsureInstancesExist(client, names):
183 """Check for and ensure the given instance names exist.
185 This function will raise an OpPrereqError in case they don't
186 exist. Otherwise it will exit cleanly.
188 @type client: L{ganeti.luxi.Client}
189 @param client: the client to use for the query
191 @param names: the list of instance names to query
192 @raise errors.OpPrereqError: in case any instance is missing
195 # TODO: change LUQueryInstances to that it actually returns None
196 # instead of raising an exception, or devise a better mechanism
197 result = client.QueryInstances(names, ["name"], False)
198 for orig_name, row in zip(names, result):
200 raise errors.OpPrereqError("Instance '%s' does not exist" % orig_name,
204 def GenericManyOps(operation, fn):
205 """Generic multi-instance operations.
207 The will return a wrapper that processes the options and arguments
208 given, and uses the passed function to build the opcode needed for
209 the specific operation. Thus all the generic loop/confirmation code
210 is abstracted into this function.
213 def realfn(opts, args):
214 if opts.multi_mode is None:
215 opts.multi_mode = _SHUTDOWN_INSTANCES
217 inames = _ExpandMultiNames(opts.multi_mode, args, client=cl)
219 raise errors.OpPrereqError("Selection filter does not match"
220 " any instances", errors.ECODE_INVAL)
221 multi_on = opts.multi_mode != _SHUTDOWN_INSTANCES or len(inames) > 1
222 if not (opts.force_multi or not multi_on
223 or _ConfirmOperation(inames, operation)):
225 jex = JobExecutor(verbose=multi_on, cl=cl, opts=opts)
228 jex.QueueJob(name, op)
229 results = jex.WaitOrShow(not opts.submit_only)
230 rcode = compat.all(row[0] for row in results)
231 return int(not rcode)
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 selected_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
247 output = GetClient().QueryInstances(args, selected_fields, opts.do_locking)
249 if not opts.no_headers:
251 "name": "Instance", "os": "OS", "pnode": "Primary_node",
252 "snodes": "Secondary_Nodes", "admin_state": "Autostart",
253 "oper_state": "Running",
254 "oper_ram": "Memory", "disk_template": "Disk_template",
255 "oper_vcpus": "VCPUs",
256 "ip": "IP_address", "mac": "MAC_address",
257 "nic_mode": "NIC_Mode", "nic_link": "NIC_Link",
259 "sda_size": "Disk/0", "sdb_size": "Disk/1",
260 "disk_usage": "DiskUsage",
261 "status": "Status", "tags": "Tags",
262 "network_port": "Network_port",
263 "hv/kernel_path": "Kernel_path",
264 "hv/initrd_path": "Initrd_path",
265 "hv/boot_order": "Boot_order",
268 "hv/cdrom_image_path": "CDROM_image_path",
269 "hv/nic_type": "NIC_type",
270 "hv/disk_type": "Disk_type",
271 "hv/vnc_bind_address": "VNC_bind_address",
272 "serial_no": "SerialNo", "hypervisor": "Hypervisor",
273 "hvparams": "Hypervisor_parameters",
274 "be/memory": "Configured_memory",
277 "be/auto_balance": "Auto_balance",
278 "disk.count": "Disks", "disk.sizes": "Disk_sizes",
279 "nic.count": "NICs", "nic.ips": "NIC_IPs",
280 "nic.modes": "NIC_modes", "nic.links": "NIC_links",
281 "nic.bridges": "NIC_bridges", "nic.macs": "NIC_MACs",
282 "ctime": "CTime", "mtime": "MTime", "uuid": "UUID",
287 unitfields = ["be/memory", "oper_ram", "sd(a|b)_size", "disk\.size/.*"]
288 numfields = ["be/memory", "oper_ram", "sd(a|b)_size", "be/vcpus",
289 "serial_no", "(disk|nic)\.count", "disk\.size/.*"]
291 list_type_fields = ("tags", "disk.sizes", "nic.macs", "nic.ips",
292 "nic.modes", "nic.links", "nic.bridges")
293 # change raw values to nicer strings
295 for idx, field in enumerate(selected_fields):
297 if field == "snodes":
298 val = ",".join(val) or "-"
299 elif field == "admin_state":
304 elif field == "oper_state":
311 elif field == "oper_ram":
314 elif field == "oper_vcpus":
317 elif field == "sda_size" or field == "sdb_size":
320 elif field == "ctime" or field == "mtime":
321 val = utils.FormatTime(val)
322 elif field in list_type_fields:
323 val = ",".join(str(item) for item in val)
326 if opts.roman_integers and isinstance(val, int):
327 val = compat.TryToRoman(val)
330 data = GenerateTable(separator=opts.separator, headers=headers,
331 fields=selected_fields, unitfields=unitfields,
332 numfields=numfields, data=output, units=opts.units)
340 def AddInstance(opts, args):
341 """Add an instance to the cluster.
343 This is just a wrapper over GenericInstanceCreate.
346 return GenericInstanceCreate(constants.INSTANCE_CREATE, opts, args)
349 def BatchCreate(opts, args):
350 """Create instances using a definition file.
352 This function reads a json file with instances defined
356 "disk_size": [20480],
362 "primary_node": "firstnode",
363 "secondary_node": "secondnode",
364 "iallocator": "dumb"}
367 Note that I{primary_node} and I{secondary_node} have precedence over
370 @param opts: the command line options selected by the user
372 @param args: should contain one element, the json filename
374 @return: the desired exit code
377 _DEFAULT_SPECS = {"disk_size": [20 * 1024],
380 "primary_node": None,
381 "secondary_node": None,
388 "file_storage_dir": None,
389 "force_variant": False,
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=specs["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", "variants"], names=[])
526 result = SubmitOpCode(op, opts=opts)
529 ToStdout("Can't get the OS list")
532 ToStdout("Available OS templates:")
535 for (name, variants) in result:
536 for entry in CalculateOSNames(name, variants):
537 ToStdout("%3s: %s", number, entry)
538 choices.append(("%s" % number, entry, entry))
541 choices.append(('x', 'exit', 'Exit gnt-instance reinstall'))
542 selected = AskUser("Enter OS template number (or x to abort):",
545 if selected == 'exit':
546 ToStderr("User aborted reinstall, exiting")
553 # third, get confirmation: multi-reinstall requires --force-multi,
554 # single-reinstall either --force or --force-multi (--force-multi is
555 # a stronger --force)
556 multi_on = opts.multi_mode != _SHUTDOWN_INSTANCES or len(inames) > 1
558 warn_msg = "Note: this will remove *all* data for the below instances!\n"
559 if not (opts.force_multi or
560 _ConfirmOperation(inames, "reinstall", extra=warn_msg)):
563 if not (opts.force or opts.force_multi):
564 usertext = ("This will reinstall the instance %s and remove"
565 " all data. Continue?") % inames[0]
566 if not AskUser(usertext):
569 jex = JobExecutor(verbose=multi_on, opts=opts)
570 for instance_name in inames:
571 op = opcodes.OpReinstallInstance(instance_name=instance_name,
573 force_variant=opts.force_variant,
574 osparams=opts.osparams)
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.name_check:
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 ip_check=opts.ip_check,
631 name_check=opts.name_check)
632 result = SubmitOrSend(op, opts)
635 ToStdout("Instance '%s' renamed to '%s'", args[0], result)
640 def ActivateDisks(opts, args):
641 """Activate an instance's disks.
643 This serves two purposes:
644 - it allows (as long as the instance is not running)
645 mounting the disks and modifying them from the node
646 - it repairs inactive secondary drbds
648 @param opts: the command line options selected by the user
650 @param args: should contain only one element, the instance name
652 @return: the desired exit code
655 instance_name = args[0]
656 op = opcodes.OpActivateInstanceDisks(instance_name=instance_name,
657 ignore_size=opts.ignore_size)
658 disks_info = SubmitOrSend(op, opts)
659 for host, iname, nname in disks_info:
660 ToStdout("%s:%s:%s", host, iname, nname)
664 def DeactivateDisks(opts, args):
665 """Deactivate an instance's disks.
667 This function takes the instance name, looks for its primary node
668 and the tries to shutdown its block devices on that node.
670 @param opts: the command line options selected by the user
672 @param args: should contain only one element, the instance name
674 @return: the desired exit code
677 instance_name = args[0]
678 op = opcodes.OpDeactivateInstanceDisks(instance_name=instance_name)
679 SubmitOrSend(op, opts)
683 def RecreateDisks(opts, args):
684 """Recreate an instance's disks.
686 @param opts: the command line options selected by the user
688 @param args: should contain only one element, the instance name
690 @return: the desired exit code
693 instance_name = args[0]
696 opts.disks = [int(v) for v in opts.disks.split(",")]
697 except (ValueError, TypeError), err:
698 ToStderr("Invalid disks value: %s" % str(err))
703 op = opcodes.OpRecreateInstanceDisks(instance_name=instance_name,
705 SubmitOrSend(op, opts)
709 def GrowDisk(opts, args):
710 """Grow an instance's disks.
712 @param opts: the command line options selected by the user
714 @param args: should contain two elements, the instance name
715 whose disks we grow and the disk name, e.g. I{sda}
717 @return: the desired exit code
724 except (TypeError, ValueError), err:
725 raise errors.OpPrereqError("Invalid disk index: %s" % str(err),
727 amount = utils.ParseUnit(args[2])
728 op = opcodes.OpGrowDisk(instance_name=instance, disk=disk, amount=amount,
729 wait_for_sync=opts.wait_for_sync)
730 SubmitOrSend(op, opts)
734 def _StartupInstance(name, opts):
735 """Startup instances.
737 This returns the opcode to start an instance, and its decorator will
738 wrap this into a loop starting all desired instances.
740 @param name: the name of the instance to act on
741 @param opts: the command line options selected by the user
742 @return: the opcode needed for the operation
745 op = opcodes.OpStartupInstance(instance_name=name,
747 ignore_offline_nodes=opts.ignore_offline)
748 # do not add these parameters to the opcode unless they're defined
750 op.hvparams = opts.hvparams
752 op.beparams = opts.beparams
756 def _RebootInstance(name, opts):
757 """Reboot instance(s).
759 This returns the opcode to reboot an instance, and its decorator
760 will wrap this into a loop rebooting all desired instances.
762 @param name: the name of the instance to act on
763 @param opts: the command line options selected by the user
764 @return: the opcode needed for the operation
767 return opcodes.OpRebootInstance(instance_name=name,
768 reboot_type=opts.reboot_type,
769 ignore_secondaries=opts.ignore_secondaries,
770 shutdown_timeout=opts.shutdown_timeout)
773 def _ShutdownInstance(name, opts):
774 """Shutdown an instance.
776 This returns the opcode to shutdown an instance, and its decorator
777 will wrap this into a loop shutting down all desired instances.
779 @param name: the name of the instance to act on
780 @param opts: the command line options selected by the user
781 @return: the opcode needed for the operation
784 return opcodes.OpShutdownInstance(instance_name=name,
785 timeout=opts.timeout,
786 ignore_offline_nodes=opts.ignore_offline)
789 def ReplaceDisks(opts, args):
790 """Replace the disks of an instance
792 @param opts: the command line options selected by the user
794 @param args: should contain only one element, the instance name
796 @return: the desired exit code
799 new_2ndary = opts.dst_node
800 iallocator = opts.iallocator
801 if opts.disks is None:
805 disks = [int(i) for i in opts.disks.split(",")]
806 except (TypeError, ValueError), err:
807 raise errors.OpPrereqError("Invalid disk index passed: %s" % str(err),
809 cnt = [opts.on_primary, opts.on_secondary, opts.auto,
810 new_2ndary is not None, iallocator is not None].count(True)
812 raise errors.OpPrereqError("One and only one of the -p, -s, -a, -n and -i"
813 " options must be passed", errors.ECODE_INVAL)
814 elif opts.on_primary:
815 mode = constants.REPLACE_DISK_PRI
816 elif opts.on_secondary:
817 mode = constants.REPLACE_DISK_SEC
819 mode = constants.REPLACE_DISK_AUTO
821 raise errors.OpPrereqError("Cannot specify disks when using automatic"
822 " mode", errors.ECODE_INVAL)
823 elif new_2ndary is not None or iallocator is not None:
825 mode = constants.REPLACE_DISK_CHG
827 op = opcodes.OpReplaceDisks(instance_name=args[0], disks=disks,
828 remote_node=new_2ndary, mode=mode,
829 iallocator=iallocator,
830 early_release=opts.early_release)
831 SubmitOrSend(op, opts)
835 def FailoverInstance(opts, args):
836 """Failover an instance.
838 The failover is done by shutting it down on its present node and
839 starting it on the secondary.
841 @param opts: the command line options selected by the user
843 @param args: should contain only one element, the instance name
845 @return: the desired exit code
849 instance_name = args[0]
853 _EnsureInstancesExist(cl, [instance_name])
855 usertext = ("Failover will happen to image %s."
856 " This requires a shutdown of the instance. Continue?" %
858 if not AskUser(usertext):
861 op = opcodes.OpFailoverInstance(instance_name=instance_name,
862 ignore_consistency=opts.ignore_consistency,
863 shutdown_timeout=opts.shutdown_timeout)
864 SubmitOrSend(op, opts, cl=cl)
868 def MigrateInstance(opts, args):
869 """Migrate an instance.
871 The migrate is done without shutdown.
873 @param opts: the command line options selected by the user
875 @param args: should contain only one element, the instance name
877 @return: the desired exit code
881 instance_name = args[0]
885 _EnsureInstancesExist(cl, [instance_name])
888 usertext = ("Instance %s will be recovered from a failed migration."
889 " Note that the migration procedure (including cleanup)" %
892 usertext = ("Instance %s will be migrated. Note that migration" %
894 usertext += (" might impact the instance if anything goes wrong"
895 " (e.g. due to bugs in the hypervisor). Continue?")
896 if not AskUser(usertext):
899 # this should be removed once --non-live is deprecated
900 if not opts.live and opts.migration_mode is not None:
901 raise errors.OpPrereqError("Only one of the --non-live and "
902 "--migration-mode options can be passed",
904 if not opts.live: # --non-live passed
905 mode = constants.HT_MIGRATION_NONLIVE
907 mode = opts.migration_mode
909 op = opcodes.OpMigrateInstance(instance_name=instance_name, mode=mode,
910 cleanup=opts.cleanup)
911 SubmitOpCode(op, cl=cl, opts=opts)
915 def MoveInstance(opts, args):
918 @param opts: the command line options selected by the user
920 @param args: should contain only one element, the instance name
922 @return: the desired exit code
926 instance_name = args[0]
930 usertext = ("Instance %s will be moved."
931 " This requires a shutdown of the instance. Continue?" %
933 if not AskUser(usertext):
936 op = opcodes.OpMoveInstance(instance_name=instance_name,
937 target_node=opts.node,
938 shutdown_timeout=opts.shutdown_timeout)
939 SubmitOrSend(op, opts, cl=cl)
943 def ConnectToInstanceConsole(opts, args):
944 """Connect to the console of an instance.
946 @param opts: the command line options selected by the user
948 @param args: should contain only one element, the instance name
950 @return: the desired exit code
953 instance_name = args[0]
955 op = opcodes.OpConnectConsole(instance_name=instance_name)
956 cmd = SubmitOpCode(op, opts=opts)
958 if opts.show_command:
959 ToStdout("%s", utils.ShellQuoteArgs(cmd))
961 result = utils.RunCmd(cmd, interactive=True)
963 raise errors.OpExecError("Console command \"%s\" failed: %s" %
964 (utils.ShellQuoteArgs(cmd), result.fail_reason))
966 return constants.EXIT_SUCCESS
969 def _FormatLogicalID(dev_type, logical_id, roman):
970 """Formats the logical_id of a disk.
973 if dev_type == constants.LD_DRBD8:
974 node_a, node_b, port, minor_a, minor_b, key = logical_id
976 ("nodeA", "%s, minor=%s" % (node_a, compat.TryToRoman(minor_a,
978 ("nodeB", "%s, minor=%s" % (node_b, compat.TryToRoman(minor_b,
980 ("port", compat.TryToRoman(port, convert=roman)),
983 elif dev_type == constants.LD_LV:
984 vg_name, lv_name = logical_id
985 data = ["%s/%s" % (vg_name, lv_name)]
987 data = [str(logical_id)]
992 def _FormatBlockDevInfo(idx, top_level, dev, static, roman):
993 """Show block device information.
995 This is only used by L{ShowInstanceConfig}, but it's too big to be
996 left for an inline definition.
999 @param idx: the index of the current disk
1000 @type top_level: boolean
1001 @param top_level: if this a top-level disk?
1003 @param dev: dictionary with disk information
1004 @type static: boolean
1005 @param static: wheter the device information doesn't contain
1006 runtime information but only static data
1007 @type roman: boolean
1008 @param roman: whether to try to use roman integers
1009 @return: a list of either strings, tuples or lists
1010 (which should be formatted at a higher indent level)
1013 def helper(dtype, status):
1014 """Format one line for physical device status.
1017 @param dtype: a constant from the L{constants.LDS_BLOCK} set
1019 @param status: a tuple as returned from L{backend.FindBlockDevice}
1020 @return: the string representing the status
1026 (path, major, minor, syncp, estt, degr, ldisk_status) = status
1028 major_string = "N/A"
1030 major_string = str(compat.TryToRoman(major, convert=roman))
1033 minor_string = "N/A"
1035 minor_string = str(compat.TryToRoman(minor, convert=roman))
1037 txt += ("%s (%s:%s)" % (path, major_string, minor_string))
1038 if dtype in (constants.LD_DRBD8, ):
1039 if syncp is not None:
1040 sync_text = "*RECOVERING* %5.2f%%," % syncp
1042 sync_text += " ETA %ss" % compat.TryToRoman(estt, convert=roman)
1044 sync_text += " ETA unknown"
1046 sync_text = "in sync"
1048 degr_text = "*DEGRADED*"
1051 if ldisk_status == constants.LDS_FAULTY:
1052 ldisk_text = " *MISSING DISK*"
1053 elif ldisk_status == constants.LDS_UNKNOWN:
1054 ldisk_text = " *UNCERTAIN STATE*"
1057 txt += (" %s, status %s%s" % (sync_text, degr_text, ldisk_text))
1058 elif dtype == constants.LD_LV:
1059 if ldisk_status == constants.LDS_FAULTY:
1060 ldisk_text = " *FAILED* (failed drive?)"
1068 if dev["iv_name"] is not None:
1069 txt = dev["iv_name"]
1071 txt = "disk %s" % compat.TryToRoman(idx, convert=roman)
1073 txt = "child %s" % compat.TryToRoman(idx, convert=roman)
1074 if isinstance(dev["size"], int):
1075 nice_size = utils.FormatUnit(dev["size"], "h")
1077 nice_size = dev["size"]
1078 d1 = ["- %s: %s, size %s" % (txt, dev["dev_type"], nice_size)]
1081 data.append(("access mode", dev["mode"]))
1082 if dev["logical_id"] is not None:
1084 l_id = _FormatLogicalID(dev["dev_type"], dev["logical_id"], roman)
1086 l_id = [str(dev["logical_id"])]
1088 data.append(("logical_id", l_id[0]))
1091 elif dev["physical_id"] is not None:
1092 data.append("physical_id:")
1093 data.append([dev["physical_id"]])
1095 data.append(("on primary", helper(dev["dev_type"], dev["pstatus"])))
1096 if dev["sstatus"] and not static:
1097 data.append(("on secondary", helper(dev["dev_type"], dev["sstatus"])))
1100 data.append("child devices:")
1101 for c_idx, child in enumerate(dev["children"]):
1102 data.append(_FormatBlockDevInfo(c_idx, False, child, static, roman))
1107 def _FormatList(buf, data, indent_level):
1108 """Formats a list of data at a given indent level.
1110 If the element of the list is:
1111 - a string, it is simply formatted as is
1112 - a tuple, it will be split into key, value and the all the
1113 values in a list will be aligned all at the same start column
1114 - a list, will be recursively formatted
1117 @param buf: the buffer into which we write the output
1118 @param data: the list to format
1119 @type indent_level: int
1120 @param indent_level: the indent level to format at
1123 max_tlen = max([len(elem[0]) for elem in data
1124 if isinstance(elem, tuple)] or [0])
1126 if isinstance(elem, basestring):
1127 buf.write("%*s%s\n" % (2*indent_level, "", elem))
1128 elif isinstance(elem, tuple):
1130 spacer = "%*s" % (max_tlen - len(key), "")
1131 buf.write("%*s%s:%s %s\n" % (2*indent_level, "", key, spacer, value))
1132 elif isinstance(elem, list):
1133 _FormatList(buf, elem, indent_level+1)
1136 def _FormatParameterDict(buf, per_inst, actual):
1137 """Formats a parameter dictionary.
1139 @type buf: L{StringIO}
1140 @param buf: the buffer into which to write
1141 @type per_inst: dict
1142 @param per_inst: the instance's own parameters
1144 @param actual: the current parameter set (including defaults)
1147 for key in sorted(actual):
1148 val = per_inst.get(key, "default (%s)" % actual[key])
1149 buf.write(" - %s: %s\n" % (key, val))
1151 def ShowInstanceConfig(opts, args):
1152 """Compute instance run-time status.
1154 @param opts: the command line options selected by the user
1156 @param args: either an empty list, and then we query all
1157 instances, or should contain a list of instance names
1159 @return: the desired exit code
1162 if not args and not opts.show_all:
1163 ToStderr("No instance selected."
1164 " Please pass in --all if you want to query all instances.\n"
1165 "Note that this can take a long time on a big cluster.")
1167 elif args and opts.show_all:
1168 ToStderr("Cannot use --all if you specify instance names.")
1172 op = opcodes.OpQueryInstanceData(instances=args, static=opts.static)
1173 result = SubmitOpCode(op, opts=opts)
1175 ToStdout("No instances.")
1180 for instance_name in result:
1181 instance = result[instance_name]
1182 buf.write("Instance name: %s\n" % instance["name"])
1183 buf.write("UUID: %s\n" % instance["uuid"])
1184 buf.write("Serial number: %s\n" %
1185 compat.TryToRoman(instance["serial_no"],
1186 convert=opts.roman_integers))
1187 buf.write("Creation time: %s\n" % utils.FormatTime(instance["ctime"]))
1188 buf.write("Modification time: %s\n" % utils.FormatTime(instance["mtime"]))
1189 buf.write("State: configured to be %s" % instance["config_state"])
1191 buf.write(", actual state is %s" % instance["run_state"])
1193 ##buf.write("Considered for memory checks in cluster verify: %s\n" %
1194 ## instance["auto_balance"])
1195 buf.write(" Nodes:\n")
1196 buf.write(" - primary: %s\n" % instance["pnode"])
1197 buf.write(" - secondaries: %s\n" % utils.CommaJoin(instance["snodes"]))
1198 buf.write(" Operating system: %s\n" % instance["os"])
1199 _FormatParameterDict(buf, instance["os_instance"], instance["os_actual"])
1200 if instance.has_key("network_port"):
1201 buf.write(" Allocated network port: %s\n" %
1202 compat.TryToRoman(instance["network_port"],
1203 convert=opts.roman_integers))
1204 buf.write(" Hypervisor: %s\n" % instance["hypervisor"])
1206 # custom VNC console information
1207 vnc_bind_address = instance["hv_actual"].get(constants.HV_VNC_BIND_ADDRESS,
1209 if vnc_bind_address:
1210 port = instance["network_port"]
1211 display = int(port) - constants.VNC_BASE_PORT
1212 if display > 0 and vnc_bind_address == constants.IP4_ADDRESS_ANY:
1213 vnc_console_port = "%s:%s (display %s)" % (instance["pnode"],
1216 elif display > 0 and netutils.IP4Address.IsValid(vnc_bind_address):
1217 vnc_console_port = ("%s:%s (node %s) (display %s)" %
1218 (vnc_bind_address, port,
1219 instance["pnode"], display))
1221 # vnc bind address is a file
1222 vnc_console_port = "%s:%s" % (instance["pnode"],
1224 buf.write(" - console connection: vnc to %s\n" % vnc_console_port)
1226 _FormatParameterDict(buf, instance["hv_instance"], instance["hv_actual"])
1227 buf.write(" Hardware:\n")
1228 buf.write(" - VCPUs: %s\n" %
1229 compat.TryToRoman(instance["be_actual"][constants.BE_VCPUS],
1230 convert=opts.roman_integers))
1231 buf.write(" - memory: %sMiB\n" %
1232 compat.TryToRoman(instance["be_actual"][constants.BE_MEMORY],
1233 convert=opts.roman_integers))
1234 buf.write(" - NICs:\n")
1235 for idx, (ip, mac, mode, link) in enumerate(instance["nics"]):
1236 buf.write(" - nic/%d: MAC: %s, IP: %s, mode: %s, link: %s\n" %
1237 (idx, mac, ip, mode, link))
1238 buf.write(" Disks:\n")
1240 for idx, device in enumerate(instance["disks"]):
1241 _FormatList(buf, _FormatBlockDevInfo(idx, True, device, opts.static,
1242 opts.roman_integers), 2)
1244 ToStdout(buf.getvalue().rstrip('\n'))
1248 def SetInstanceParams(opts, args):
1249 """Modifies an instance.
1251 All parameters take effect only at the next restart of the instance.
1253 @param opts: the command line options selected by the user
1255 @param args: should contain only one element, the instance name
1257 @return: the desired exit code
1260 if not (opts.nics or opts.disks or opts.disk_template or
1261 opts.hvparams or opts.beparams or opts.os or opts.osparams):
1262 ToStderr("Please give at least one of the parameters.")
1265 for param in opts.beparams:
1266 if isinstance(opts.beparams[param], basestring):
1267 if opts.beparams[param].lower() == "default":
1268 opts.beparams[param] = constants.VALUE_DEFAULT
1270 utils.ForceDictType(opts.beparams, constants.BES_PARAMETER_TYPES,
1271 allowed_values=[constants.VALUE_DEFAULT])
1273 for param in opts.hvparams:
1274 if isinstance(opts.hvparams[param], basestring):
1275 if opts.hvparams[param].lower() == "default":
1276 opts.hvparams[param] = constants.VALUE_DEFAULT
1278 utils.ForceDictType(opts.hvparams, constants.HVS_PARAMETER_TYPES,
1279 allowed_values=[constants.VALUE_DEFAULT])
1281 for idx, (nic_op, nic_dict) in enumerate(opts.nics):
1283 nic_op = int(nic_op)
1284 opts.nics[idx] = (nic_op, nic_dict)
1285 except (TypeError, ValueError):
1288 for idx, (disk_op, disk_dict) in enumerate(opts.disks):
1290 disk_op = int(disk_op)
1291 opts.disks[idx] = (disk_op, disk_dict)
1292 except (TypeError, ValueError):
1294 if disk_op == constants.DDM_ADD:
1295 if 'size' not in disk_dict:
1296 raise errors.OpPrereqError("Missing required parameter 'size'",
1298 disk_dict['size'] = utils.ParseUnit(disk_dict['size'])
1300 if (opts.disk_template and
1301 opts.disk_template in constants.DTS_NET_MIRROR and
1303 ToStderr("Changing the disk template to a mirrored one requires"
1304 " specifying a secondary node")
1307 op = opcodes.OpSetInstanceParams(instance_name=args[0],
1310 disk_template=opts.disk_template,
1311 remote_node=opts.node,
1312 hvparams=opts.hvparams,
1313 beparams=opts.beparams,
1315 osparams=opts.osparams,
1316 force_variant=opts.force_variant,
1319 # even if here we process the result, we allow submit only
1320 result = SubmitOrSend(op, opts)
1323 ToStdout("Modified instance %s", args[0])
1324 for param, data in result:
1325 ToStdout(" - %-5s -> %s", param, data)
1326 ToStdout("Please don't forget that most parameters take effect"
1327 " only at the next start of the instance.")
1331 # multi-instance selection options
1332 m_force_multi = cli_option("--force-multiple", dest="force_multi",
1333 help="Do not ask for confirmation when more than"
1334 " one instance is affected",
1335 action="store_true", default=False)
1337 m_pri_node_opt = cli_option("--primary", dest="multi_mode",
1338 help="Filter by nodes (primary only)",
1339 const=_SHUTDOWN_NODES_PRI, action="store_const")
1341 m_sec_node_opt = cli_option("--secondary", dest="multi_mode",
1342 help="Filter by nodes (secondary only)",
1343 const=_SHUTDOWN_NODES_SEC, action="store_const")
1345 m_node_opt = cli_option("--node", dest="multi_mode",
1346 help="Filter by nodes (primary and secondary)",
1347 const=_SHUTDOWN_NODES_BOTH, action="store_const")
1349 m_clust_opt = cli_option("--all", dest="multi_mode",
1350 help="Select all instances in the cluster",
1351 const=_SHUTDOWN_CLUSTER, action="store_const")
1353 m_inst_opt = cli_option("--instance", dest="multi_mode",
1354 help="Filter by instance name [default]",
1355 const=_SHUTDOWN_INSTANCES, action="store_const")
1357 m_node_tags_opt = cli_option("--node-tags", dest="multi_mode",
1358 help="Filter by node tag",
1359 const=_SHUTDOWN_NODES_BOTH_BY_TAGS,
1360 action="store_const")
1362 m_pri_node_tags_opt = cli_option("--pri-node-tags", dest="multi_mode",
1363 help="Filter by primary node tag",
1364 const=_SHUTDOWN_NODES_PRI_BY_TAGS,
1365 action="store_const")
1367 m_sec_node_tags_opt = cli_option("--sec-node-tags", dest="multi_mode",
1368 help="Filter by secondary node tag",
1369 const=_SHUTDOWN_NODES_SEC_BY_TAGS,
1370 action="store_const")
1372 m_inst_tags_opt = cli_option("--tags", dest="multi_mode",
1373 help="Filter by instance tag",
1374 const=_SHUTDOWN_INSTANCES_BY_TAGS,
1375 action="store_const")
1377 # this is defined separately due to readability only
1387 AddInstance, [ArgHost(min=1, max=1)], COMMON_CREATE_OPTS + 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)], [DRY_RUN_OPT, PRIORITY_OPT],
1393 "Create a bunch of instances based on specs in the file."),
1395 ConnectToInstanceConsole, ARGS_ONE_INSTANCE,
1396 [SHOWCMD_OPT, PRIORITY_OPT],
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 DRY_RUN_OPT, PRIORITY_OPT],
1402 "[-f] <instance>", "Stops the instance and starts it on the backup node,"
1403 " using the remote mirror (only for instances of type drbd)"),
1405 MigrateInstance, ARGS_ONE_INSTANCE,
1406 [FORCE_OPT, NONLIVE_OPT, MIGRATION_MODE_OPT, CLEANUP_OPT, DRY_RUN_OPT,
1408 "[-f] <instance>", "Migrate instance to its secondary node"
1409 " (only for instances of type drbd)"),
1411 MoveInstance, ARGS_ONE_INSTANCE,
1412 [FORCE_OPT, SUBMIT_OPT, SINGLE_NODE_OPT, SHUTDOWN_TIMEOUT_OPT,
1413 DRY_RUN_OPT, PRIORITY_OPT],
1414 "[-f] <instance>", "Move instance to an arbitrary node"
1415 " (only for instances of type file and lv)"),
1417 ShowInstanceConfig, ARGS_MANY_INSTANCES,
1418 [STATIC_OPT, ALL_OPT, ROMAN_OPT, PRIORITY_OPT],
1419 "[-s] {--all | <instance>...}",
1420 "Show information on the specified instance(s)"),
1422 ListInstances, ARGS_MANY_INSTANCES,
1423 [NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT, SYNC_OPT, ROMAN_OPT],
1425 "Lists the instances and their status. The available fields are"
1426 " (see the man page for details): status, oper_state, oper_ram,"
1427 " oper_vcpus, name, os, pnode, snodes, admin_state, admin_ram,"
1428 " disk_template, ip, mac, nic_mode, nic_link, sda_size, sdb_size,"
1429 " vcpus, serial_no,"
1430 " nic.count, nic.mac/N, nic.ip/N, nic.mode/N, nic.link/N,"
1431 " nic.macs, nic.ips, nic.modes, nic.links,"
1432 " disk.count, disk.size/N, disk.sizes,"
1433 " hv/NAME, be/memory, be/vcpus, be/auto_balance,"
1435 " The default field"
1436 " list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS),
1439 ReinstallInstance, [ArgInstance()],
1440 [FORCE_OPT, OS_OPT, FORCE_VARIANT_OPT, m_force_multi, m_node_opt,
1441 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, m_node_tags_opt,
1442 m_pri_node_tags_opt, m_sec_node_tags_opt, m_inst_tags_opt, SELECT_OS_OPT,
1443 SUBMIT_OPT, DRY_RUN_OPT, PRIORITY_OPT, OSPARAMS_OPT],
1444 "[-f] <instance>", "Reinstall a stopped instance"),
1446 RemoveInstance, ARGS_ONE_INSTANCE,
1447 [FORCE_OPT, SHUTDOWN_TIMEOUT_OPT, IGNORE_FAILURES_OPT, SUBMIT_OPT,
1448 DRY_RUN_OPT, PRIORITY_OPT],
1449 "[-f] <instance>", "Shuts down the instance and removes it"),
1452 [ArgInstance(min=1, max=1), ArgHost(min=1, max=1)],
1453 [NOIPCHECK_OPT, NONAMECHECK_OPT, SUBMIT_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1454 "<instance> <new_name>", "Rename the instance"),
1456 ReplaceDisks, ARGS_ONE_INSTANCE,
1457 [AUTO_REPLACE_OPT, DISKIDX_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT,
1458 NEW_SECONDARY_OPT, ON_PRIMARY_OPT, ON_SECONDARY_OPT, SUBMIT_OPT,
1459 DRY_RUN_OPT, PRIORITY_OPT],
1460 "[-s|-p|-n NODE|-I NAME] <instance>",
1461 "Replaces all disks for the instance"),
1463 SetInstanceParams, ARGS_ONE_INSTANCE,
1464 [BACKEND_OPT, DISK_OPT, FORCE_OPT, HVOPTS_OPT, NET_OPT, SUBMIT_OPT,
1465 DISK_TEMPLATE_OPT, SINGLE_NODE_OPT, OS_OPT, FORCE_VARIANT_OPT,
1466 OSPARAMS_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1467 "<instance>", "Alters the parameters of an instance"),
1469 GenericManyOps("shutdown", _ShutdownInstance), [ArgInstance()],
1470 [m_node_opt, m_pri_node_opt, m_sec_node_opt, m_clust_opt,
1471 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1472 m_inst_tags_opt, m_inst_opt, m_force_multi, TIMEOUT_OPT, SUBMIT_OPT,
1473 DRY_RUN_OPT, PRIORITY_OPT, IGNORE_OFFLINE_OPT],
1474 "<instance>", "Stops an instance"),
1476 GenericManyOps("startup", _StartupInstance), [ArgInstance()],
1477 [FORCE_OPT, m_force_multi, m_node_opt, m_pri_node_opt, m_sec_node_opt,
1478 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1479 m_inst_tags_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT, HVOPTS_OPT,
1480 BACKEND_OPT, DRY_RUN_OPT, PRIORITY_OPT, IGNORE_OFFLINE_OPT],
1481 "<instance>", "Starts an instance"),
1483 GenericManyOps("reboot", _RebootInstance), [ArgInstance()],
1484 [m_force_multi, REBOOT_TYPE_OPT, IGNORE_SECONDARIES_OPT, m_node_opt,
1485 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT,
1486 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1487 m_inst_tags_opt, SHUTDOWN_TIMEOUT_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1488 "<instance>", "Reboots an instance"),
1490 ActivateDisks, ARGS_ONE_INSTANCE,
1491 [SUBMIT_OPT, IGNORE_SIZE_OPT, PRIORITY_OPT],
1492 "<instance>", "Activate an instance's disks"),
1493 'deactivate-disks': (
1494 DeactivateDisks, ARGS_ONE_INSTANCE,
1495 [SUBMIT_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1496 "<instance>", "Deactivate an instance's disks"),
1498 RecreateDisks, ARGS_ONE_INSTANCE,
1499 [SUBMIT_OPT, DISKIDX_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1500 "<instance>", "Recreate an instance's disks"),
1503 [ArgInstance(min=1, max=1), ArgUnknown(min=1, max=1),
1504 ArgUnknown(min=1, max=1)],
1505 [SUBMIT_OPT, NWSYNC_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1506 "<instance> <disk> <size>", "Grow an instance's disk"),
1508 ListTags, ARGS_ONE_INSTANCE, [PRIORITY_OPT],
1509 "<instance_name>", "List the tags of the given instance"),
1511 AddTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1512 [TAG_SRC_OPT, PRIORITY_OPT],
1513 "<instance_name> tag...", "Add tags to the given instance"),
1515 RemoveTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1516 [TAG_SRC_OPT, PRIORITY_OPT],
1517 "<instance_name> tag...", "Remove tags from given instance"),
1520 #: dictionary with aliases for commands
1528 return GenericMain(commands, aliases=aliases,
1529 override={"tag_type": constants.TAG_INSTANCE})