4 # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 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
31 from cStringIO import StringIO
33 from ganeti.cli import *
34 from ganeti import opcodes
35 from ganeti import constants
36 from ganeti import compat
37 from ganeti import utils
38 from ganeti import errors
39 from ganeti import netutils
40 from ganeti import ssh
41 from ganeti import objects
44 _SHUTDOWN_CLUSTER = "cluster"
45 _SHUTDOWN_NODES_BOTH = "nodes"
46 _SHUTDOWN_NODES_PRI = "nodes-pri"
47 _SHUTDOWN_NODES_SEC = "nodes-sec"
48 _SHUTDOWN_NODES_BOTH_BY_TAGS = "nodes-by-tags"
49 _SHUTDOWN_NODES_PRI_BY_TAGS = "nodes-pri-by-tags"
50 _SHUTDOWN_NODES_SEC_BY_TAGS = "nodes-sec-by-tags"
51 _SHUTDOWN_INSTANCES = "instances"
52 _SHUTDOWN_INSTANCES_BY_TAGS = "instances-by-tags"
54 _SHUTDOWN_NODES_TAGS_MODES = (
55 _SHUTDOWN_NODES_BOTH_BY_TAGS,
56 _SHUTDOWN_NODES_PRI_BY_TAGS,
57 _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 _EnsureInstancesExist(client, names):
146 """Check for and ensure the given instance names exist.
148 This function will raise an OpPrereqError in case they don't
149 exist. Otherwise it will exit cleanly.
151 @type client: L{ganeti.luxi.Client}
152 @param client: the client to use for the query
154 @param names: the list of instance names to query
155 @raise errors.OpPrereqError: in case any instance is missing
158 # TODO: change LUInstanceQuery to that it actually returns None
159 # instead of raising an exception, or devise a better mechanism
160 result = client.QueryInstances(names, ["name"], False)
161 for orig_name, row in zip(names, result):
163 raise errors.OpPrereqError("Instance '%s' does not exist" % orig_name,
167 def GenericManyOps(operation, fn):
168 """Generic multi-instance operations.
170 The will return a wrapper that processes the options and arguments
171 given, and uses the passed function to build the opcode needed for
172 the specific operation. Thus all the generic loop/confirmation code
173 is abstracted into this function.
176 def realfn(opts, args):
177 if opts.multi_mode is None:
178 opts.multi_mode = _SHUTDOWN_INSTANCES
180 inames = _ExpandMultiNames(opts.multi_mode, args, client=cl)
182 if opts.multi_mode == _SHUTDOWN_CLUSTER:
183 ToStdout("Cluster is empty, no instances to shutdown")
185 raise errors.OpPrereqError("Selection filter does not match"
186 " any instances", errors.ECODE_INVAL)
187 multi_on = opts.multi_mode != _SHUTDOWN_INSTANCES or len(inames) > 1
188 if not (opts.force_multi or not multi_on
189 or ConfirmOperation(inames, "instances", operation)):
191 jex = JobExecutor(verbose=multi_on, cl=cl, opts=opts)
194 jex.QueueJob(name, op)
195 results = jex.WaitOrShow(not opts.submit_only)
196 rcode = compat.all(row[0] for row in results)
197 return int(not rcode)
201 def ListInstances(opts, args):
202 """List instances and their properties.
204 @param opts: the command line options selected by the user
206 @param args: should be an empty list
208 @return: the desired exit code
211 selected_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
213 fmtoverride = dict.fromkeys(["tags", "disk.sizes", "nic.macs", "nic.ips",
214 "nic.modes", "nic.links", "nic.bridges",
216 (lambda value: ",".join(str(item)
220 return GenericList(constants.QR_INSTANCE, selected_fields, args, opts.units,
221 opts.separator, not opts.no_headers,
222 format_override=fmtoverride, verbose=opts.verbose,
223 force_filter=opts.force_filter)
226 def ListInstanceFields(opts, args):
227 """List instance fields.
229 @param opts: the command line options selected by the user
231 @param args: fields to list, or empty for all
233 @return: the desired exit code
236 return GenericListFields(constants.QR_INSTANCE, args, opts.separator,
240 def AddInstance(opts, args):
241 """Add an instance to the cluster.
243 This is just a wrapper over GenericInstanceCreate.
246 return GenericInstanceCreate(constants.INSTANCE_CREATE, opts, args)
249 def BatchCreate(opts, args):
250 """Create instances using a definition file.
252 This function reads a json file with instances defined
256 "disk_size": [20480],
262 "primary_node": "firstnode",
263 "secondary_node": "secondnode",
264 "iallocator": "dumb"}
267 Note that I{primary_node} and I{secondary_node} have precedence over
270 @param opts: the command line options selected by the user
272 @param args: should contain one element, the json filename
274 @return: the desired exit code
277 _DEFAULT_SPECS = {"disk_size": [20 * 1024],
280 "primary_node": None,
281 "secondary_node": None,
288 "file_storage_dir": None,
289 "force_variant": False,
290 "file_driver": 'loop'}
292 def _PopulateWithDefaults(spec):
293 """Returns a new hash combined with default values."""
294 mydict = _DEFAULT_SPECS.copy()
299 """Validate the instance specs."""
300 # Validate fields required under any circumstances
301 for required_field in ('os', 'template'):
302 if required_field not in spec:
303 raise errors.OpPrereqError('Required field "%s" is missing.' %
304 required_field, errors.ECODE_INVAL)
305 # Validate special fields
306 if spec['primary_node'] is not None:
307 if (spec['template'] in constants.DTS_INT_MIRROR and
308 spec['secondary_node'] is None):
309 raise errors.OpPrereqError('Template requires secondary node, but'
310 ' there was no secondary provided.',
312 elif spec['iallocator'] is None:
313 raise errors.OpPrereqError('You have to provide at least a primary_node'
314 ' or an iallocator.',
317 if (spec['hvparams'] and
318 not isinstance(spec['hvparams'], dict)):
319 raise errors.OpPrereqError('Hypervisor parameters must be a dict.',
322 json_filename = args[0]
324 instance_data = simplejson.loads(utils.ReadFile(json_filename))
325 except Exception, err: # pylint: disable-msg=W0703
326 ToStderr("Can't parse the instance definition file: %s" % str(err))
329 if not isinstance(instance_data, dict):
330 ToStderr("The instance definition file is not in dict format.")
333 jex = JobExecutor(opts=opts)
335 # Iterate over the instances and do:
336 # * Populate the specs with default value
337 # * Validate the instance specs
338 i_names = utils.NiceSort(instance_data.keys()) # pylint: disable-msg=E1103
340 specs = instance_data[name]
341 specs = _PopulateWithDefaults(specs)
344 hypervisor = specs['hypervisor']
345 hvparams = specs['hvparams']
348 for elem in specs['disk_size']:
350 size = utils.ParseUnit(elem)
351 except (TypeError, ValueError), err:
352 raise errors.OpPrereqError("Invalid disk size '%s' for"
354 (elem, name, err), errors.ECODE_INVAL)
355 disks.append({"size": size})
357 utils.ForceDictType(specs['backend'], constants.BES_PARAMETER_TYPES)
358 utils.ForceDictType(hvparams, constants.HVS_PARAMETER_TYPES)
361 for field in constants.INIC_PARAMS:
365 tmp_nics[0][field] = specs[field]
367 if specs['nics'] is not None and tmp_nics:
368 raise errors.OpPrereqError("'nics' list incompatible with using"
369 " individual nic fields as well",
371 elif specs['nics'] is not None:
372 tmp_nics = specs['nics']
376 op = opcodes.OpInstanceCreate(instance_name=name,
378 disk_template=specs['template'],
379 mode=constants.INSTANCE_CREATE,
381 force_variant=specs["force_variant"],
382 pnode=specs['primary_node'],
383 snode=specs['secondary_node'],
385 start=specs['start'],
386 ip_check=specs['ip_check'],
387 name_check=specs['name_check'],
389 iallocator=specs['iallocator'],
390 hypervisor=hypervisor,
392 beparams=specs['backend'],
393 file_storage_dir=specs['file_storage_dir'],
394 file_driver=specs['file_driver'])
396 jex.QueueJob(name, op)
397 # we never want to wait, just show the submitted job IDs
398 jex.WaitOrShow(False)
403 def ReinstallInstance(opts, args):
404 """Reinstall an instance.
406 @param opts: the command line options selected by the user
408 @param args: should contain only one element, the name of the
409 instance to be reinstalled
411 @return: the desired exit code
414 # first, compute the desired name list
415 if opts.multi_mode is None:
416 opts.multi_mode = _SHUTDOWN_INSTANCES
418 inames = _ExpandMultiNames(opts.multi_mode, args)
420 raise errors.OpPrereqError("Selection filter does not match any instances",
423 # second, if requested, ask for an OS
424 if opts.select_os is True:
425 op = opcodes.OpOsDiagnose(output_fields=["name", "variants"], names=[])
426 result = SubmitOpCode(op, opts=opts)
429 ToStdout("Can't get the OS list")
432 ToStdout("Available OS templates:")
435 for (name, variants) in result:
436 for entry in CalculateOSNames(name, variants):
437 ToStdout("%3s: %s", number, entry)
438 choices.append(("%s" % number, entry, entry))
441 choices.append(('x', 'exit', 'Exit gnt-instance reinstall'))
442 selected = AskUser("Enter OS template number (or x to abort):",
445 if selected == 'exit':
446 ToStderr("User aborted reinstall, exiting")
450 os_msg = "change the OS to '%s'" % selected
453 if opts.os is not None:
454 os_msg = "change the OS to '%s'" % os_name
456 os_msg = "keep the same OS"
458 # third, get confirmation: multi-reinstall requires --force-multi,
459 # single-reinstall either --force or --force-multi (--force-multi is
460 # a stronger --force)
461 multi_on = opts.multi_mode != _SHUTDOWN_INSTANCES or len(inames) > 1
463 warn_msg = ("Note: this will remove *all* data for the"
464 " below instances! It will %s.\n" % os_msg)
465 if not (opts.force_multi or
466 ConfirmOperation(inames, "instances", "reinstall", extra=warn_msg)):
469 if not (opts.force or opts.force_multi):
470 usertext = ("This will reinstall the instance '%s' (and %s) which"
471 " removes all data. Continue?") % (inames[0], os_msg)
472 if not AskUser(usertext):
475 jex = JobExecutor(verbose=multi_on, opts=opts)
476 for instance_name in inames:
477 op = opcodes.OpInstanceReinstall(instance_name=instance_name,
479 force_variant=opts.force_variant,
480 osparams=opts.osparams)
481 jex.QueueJob(instance_name, op)
483 jex.WaitOrShow(not opts.submit_only)
487 def RemoveInstance(opts, args):
488 """Remove an instance.
490 @param opts: the command line options selected by the user
492 @param args: should contain only one element, the name of
493 the instance to be removed
495 @return: the desired exit code
498 instance_name = args[0]
503 _EnsureInstancesExist(cl, [instance_name])
505 usertext = ("This will remove the volumes of the instance %s"
506 " (including mirrors), thus removing all the data"
507 " of the instance. Continue?") % instance_name
508 if not AskUser(usertext):
511 op = opcodes.OpInstanceRemove(instance_name=instance_name,
512 ignore_failures=opts.ignore_failures,
513 shutdown_timeout=opts.shutdown_timeout)
514 SubmitOrSend(op, opts, cl=cl)
518 def RenameInstance(opts, args):
519 """Rename an instance.
521 @param opts: the command line options selected by the user
523 @param args: should contain two elements, the old and the
526 @return: the desired exit code
529 if not opts.name_check:
530 if not AskUser("As you disabled the check of the DNS entry, please verify"
531 " that '%s' is a FQDN. Continue?" % args[1]):
534 op = opcodes.OpInstanceRename(instance_name=args[0],
536 ip_check=opts.ip_check,
537 name_check=opts.name_check)
538 result = SubmitOrSend(op, opts)
541 ToStdout("Instance '%s' renamed to '%s'", args[0], result)
546 def ActivateDisks(opts, args):
547 """Activate an instance's disks.
549 This serves two purposes:
550 - it allows (as long as the instance is not running)
551 mounting the disks and modifying them from the node
552 - it repairs inactive secondary drbds
554 @param opts: the command line options selected by the user
556 @param args: should contain only one element, the instance name
558 @return: the desired exit code
561 instance_name = args[0]
562 op = opcodes.OpInstanceActivateDisks(instance_name=instance_name,
563 ignore_size=opts.ignore_size)
564 disks_info = SubmitOrSend(op, opts)
565 for host, iname, nname in disks_info:
566 ToStdout("%s:%s:%s", host, iname, nname)
570 def DeactivateDisks(opts, args):
571 """Deactivate an instance's disks.
573 This function takes the instance name, looks for its primary node
574 and the tries to shutdown its block devices on that node.
576 @param opts: the command line options selected by the user
578 @param args: should contain only one element, the instance name
580 @return: the desired exit code
583 instance_name = args[0]
584 op = opcodes.OpInstanceDeactivateDisks(instance_name=instance_name,
586 SubmitOrSend(op, opts)
590 def RecreateDisks(opts, args):
591 """Recreate an instance's disks.
593 @param opts: the command line options selected by the user
595 @param args: should contain only one element, the instance name
597 @return: the desired exit code
600 instance_name = args[0]
603 opts.disks = [int(v) for v in opts.disks.split(",")]
604 except (ValueError, TypeError), err:
605 ToStderr("Invalid disks value: %s" % str(err))
611 pnode, snode = SplitNodeOption(opts.node)
613 if snode is not None:
618 op = opcodes.OpInstanceRecreateDisks(instance_name=instance_name,
621 SubmitOrSend(op, opts)
625 def GrowDisk(opts, args):
626 """Grow an instance's disks.
628 @param opts: the command line options selected by the user
630 @param args: should contain two elements, the instance name
631 whose disks we grow and the disk name, e.g. I{sda}
633 @return: the desired exit code
640 except (TypeError, ValueError), err:
641 raise errors.OpPrereqError("Invalid disk index: %s" % str(err),
643 amount = utils.ParseUnit(args[2])
644 op = opcodes.OpInstanceGrowDisk(instance_name=instance,
645 disk=disk, amount=amount,
646 wait_for_sync=opts.wait_for_sync)
647 SubmitOrSend(op, opts)
651 def _StartupInstance(name, opts):
652 """Startup instances.
654 This returns the opcode to start an instance, and its decorator will
655 wrap this into a loop starting all desired instances.
657 @param name: the name of the instance to act on
658 @param opts: the command line options selected by the user
659 @return: the opcode needed for the operation
662 op = opcodes.OpInstanceStartup(instance_name=name,
664 ignore_offline_nodes=opts.ignore_offline,
665 no_remember=opts.no_remember)
666 # do not add these parameters to the opcode unless they're defined
668 op.hvparams = opts.hvparams
670 op.beparams = opts.beparams
674 def _RebootInstance(name, opts):
675 """Reboot instance(s).
677 This returns the opcode to reboot an instance, and its decorator
678 will wrap this into a loop rebooting all desired instances.
680 @param name: the name of the instance to act on
681 @param opts: the command line options selected by the user
682 @return: the opcode needed for the operation
685 return opcodes.OpInstanceReboot(instance_name=name,
686 reboot_type=opts.reboot_type,
687 ignore_secondaries=opts.ignore_secondaries,
688 shutdown_timeout=opts.shutdown_timeout)
691 def _ShutdownInstance(name, opts):
692 """Shutdown an instance.
694 This returns the opcode to shutdown an instance, and its decorator
695 will wrap this into a loop shutting down all desired instances.
697 @param name: the name of the instance to act on
698 @param opts: the command line options selected by the user
699 @return: the opcode needed for the operation
702 return opcodes.OpInstanceShutdown(instance_name=name,
703 timeout=opts.timeout,
704 ignore_offline_nodes=opts.ignore_offline,
705 no_remember=opts.no_remember)
708 def ReplaceDisks(opts, args):
709 """Replace the disks of an instance
711 @param opts: the command line options selected by the user
713 @param args: should contain only one element, the instance name
715 @return: the desired exit code
718 new_2ndary = opts.dst_node
719 iallocator = opts.iallocator
720 if opts.disks is None:
724 disks = [int(i) for i in opts.disks.split(",")]
725 except (TypeError, ValueError), err:
726 raise errors.OpPrereqError("Invalid disk index passed: %s" % str(err),
728 cnt = [opts.on_primary, opts.on_secondary, opts.auto,
729 new_2ndary is not None, iallocator is not None].count(True)
731 raise errors.OpPrereqError("One and only one of the -p, -s, -a, -n and -I"
732 " options must be passed", errors.ECODE_INVAL)
733 elif opts.on_primary:
734 mode = constants.REPLACE_DISK_PRI
735 elif opts.on_secondary:
736 mode = constants.REPLACE_DISK_SEC
738 mode = constants.REPLACE_DISK_AUTO
740 raise errors.OpPrereqError("Cannot specify disks when using automatic"
741 " mode", errors.ECODE_INVAL)
742 elif new_2ndary is not None or iallocator is not None:
744 mode = constants.REPLACE_DISK_CHG
746 op = opcodes.OpInstanceReplaceDisks(instance_name=args[0], disks=disks,
747 remote_node=new_2ndary, mode=mode,
748 iallocator=iallocator,
749 early_release=opts.early_release)
750 SubmitOrSend(op, opts)
754 def FailoverInstance(opts, args):
755 """Failover an instance.
757 The failover is done by shutting it down on its present node and
758 starting it on the secondary.
760 @param opts: the command line options selected by the user
762 @param args: should contain only one element, the instance name
764 @return: the desired exit code
768 instance_name = args[0]
770 iallocator = opts.iallocator
771 target_node = opts.dst_node
773 if iallocator and target_node:
774 raise errors.OpPrereqError("Specify either an iallocator (-I), or a target"
775 " node (-n) but not both", errors.ECODE_INVAL)
778 _EnsureInstancesExist(cl, [instance_name])
780 usertext = ("Failover will happen to image %s."
781 " This requires a shutdown of the instance. Continue?" %
783 if not AskUser(usertext):
786 op = opcodes.OpInstanceFailover(instance_name=instance_name,
787 ignore_consistency=opts.ignore_consistency,
788 shutdown_timeout=opts.shutdown_timeout,
789 iallocator=iallocator,
790 target_node=target_node)
791 SubmitOrSend(op, opts, cl=cl)
795 def MigrateInstance(opts, args):
796 """Migrate an instance.
798 The migrate is done without shutdown.
800 @param opts: the command line options selected by the user
802 @param args: should contain only one element, the instance name
804 @return: the desired exit code
808 instance_name = args[0]
810 iallocator = opts.iallocator
811 target_node = opts.dst_node
813 if iallocator and target_node:
814 raise errors.OpPrereqError("Specify either an iallocator (-I), or a target"
815 " node (-n) but not both", errors.ECODE_INVAL)
818 _EnsureInstancesExist(cl, [instance_name])
821 usertext = ("Instance %s will be recovered from a failed migration."
822 " Note that the migration procedure (including cleanup)" %
825 usertext = ("Instance %s will be migrated. Note that migration" %
827 usertext += (" might impact the instance if anything goes wrong"
828 " (e.g. due to bugs in the hypervisor). Continue?")
829 if not AskUser(usertext):
832 # this should be removed once --non-live is deprecated
833 if not opts.live and opts.migration_mode is not None:
834 raise errors.OpPrereqError("Only one of the --non-live and "
835 "--migration-mode options can be passed",
837 if not opts.live: # --non-live passed
838 mode = constants.HT_MIGRATION_NONLIVE
840 mode = opts.migration_mode
842 op = opcodes.OpInstanceMigrate(instance_name=instance_name, mode=mode,
843 cleanup=opts.cleanup, iallocator=iallocator,
844 target_node=target_node,
845 allow_failover=opts.allow_failover)
846 SubmitOpCode(op, cl=cl, opts=opts)
850 def MoveInstance(opts, args):
853 @param opts: the command line options selected by the user
855 @param args: should contain only one element, the instance name
857 @return: the desired exit code
861 instance_name = args[0]
865 usertext = ("Instance %s will be moved."
866 " This requires a shutdown of the instance. Continue?" %
868 if not AskUser(usertext):
871 op = opcodes.OpInstanceMove(instance_name=instance_name,
872 target_node=opts.node,
873 shutdown_timeout=opts.shutdown_timeout,
874 ignore_consistency=opts.ignore_consistency)
875 SubmitOrSend(op, opts, cl=cl)
879 def ConnectToInstanceConsole(opts, args):
880 """Connect to the console of an instance.
882 @param opts: the command line options selected by the user
884 @param args: should contain only one element, the instance name
886 @return: the desired exit code
889 instance_name = args[0]
891 op = opcodes.OpInstanceConsole(instance_name=instance_name)
895 cluster_name = cl.QueryConfigValues(["cluster_name"])[0]
896 console_data = SubmitOpCode(op, opts=opts, cl=cl)
898 # Ensure client connection is closed while external commands are run
903 return _DoConsole(objects.InstanceConsole.FromDict(console_data),
904 opts.show_command, cluster_name)
907 def _DoConsole(console, show_command, cluster_name, feedback_fn=ToStdout,
908 _runcmd_fn=utils.RunCmd):
909 """Acts based on the result of L{opcodes.OpInstanceConsole}.
911 @type console: L{objects.InstanceConsole}
912 @param console: Console object
913 @type show_command: bool
914 @param show_command: Whether to just display commands
915 @type cluster_name: string
916 @param cluster_name: Cluster name as retrieved from master daemon
919 assert console.Validate()
921 if console.kind == constants.CONS_MESSAGE:
922 feedback_fn(console.message)
923 elif console.kind == constants.CONS_VNC:
924 feedback_fn("Instance %s has VNC listening on %s:%s (display %s),"
925 " URL <vnc://%s:%s/>",
926 console.instance, console.host, console.port,
927 console.display, console.host, console.port)
928 elif console.kind == constants.CONS_SSH:
929 # Convert to string if not already one
930 if isinstance(console.command, basestring):
931 cmd = console.command
933 cmd = utils.ShellQuoteArgs(console.command)
935 srun = ssh.SshRunner(cluster_name=cluster_name)
936 ssh_cmd = srun.BuildCmd(console.host, console.user, cmd,
937 batch=True, quiet=False, tty=True)
940 feedback_fn(utils.ShellQuoteArgs(ssh_cmd))
942 result = _runcmd_fn(ssh_cmd, interactive=True)
944 logging.error("Console command \"%s\" failed with reason '%s' and"
945 " output %r", result.cmd, result.fail_reason,
947 raise errors.OpExecError("Connection to console of instance %s failed,"
948 " please check cluster configuration" %
951 raise errors.GenericError("Unknown console type '%s'" % console.kind)
953 return constants.EXIT_SUCCESS
956 def _FormatLogicalID(dev_type, logical_id, roman):
957 """Formats the logical_id of a disk.
960 if dev_type == constants.LD_DRBD8:
961 node_a, node_b, port, minor_a, minor_b, key = logical_id
963 ("nodeA", "%s, minor=%s" % (node_a, compat.TryToRoman(minor_a,
965 ("nodeB", "%s, minor=%s" % (node_b, compat.TryToRoman(minor_b,
967 ("port", compat.TryToRoman(port, convert=roman)),
970 elif dev_type == constants.LD_LV:
971 vg_name, lv_name = logical_id
972 data = ["%s/%s" % (vg_name, lv_name)]
974 data = [str(logical_id)]
979 def _FormatBlockDevInfo(idx, top_level, dev, static, roman):
980 """Show block device information.
982 This is only used by L{ShowInstanceConfig}, but it's too big to be
983 left for an inline definition.
986 @param idx: the index of the current disk
987 @type top_level: boolean
988 @param top_level: if this a top-level disk?
990 @param dev: dictionary with disk information
991 @type static: boolean
992 @param static: wheter the device information doesn't contain
993 runtime information but only static data
995 @param roman: whether to try to use roman integers
996 @return: a list of either strings, tuples or lists
997 (which should be formatted at a higher indent level)
1000 def helper(dtype, status):
1001 """Format one line for physical device status.
1004 @param dtype: a constant from the L{constants.LDS_BLOCK} set
1006 @param status: a tuple as returned from L{backend.FindBlockDevice}
1007 @return: the string representing the status
1013 (path, major, minor, syncp, estt, degr, ldisk_status) = status
1015 major_string = "N/A"
1017 major_string = str(compat.TryToRoman(major, convert=roman))
1020 minor_string = "N/A"
1022 minor_string = str(compat.TryToRoman(minor, convert=roman))
1024 txt += ("%s (%s:%s)" % (path, major_string, minor_string))
1025 if dtype in (constants.LD_DRBD8, ):
1026 if syncp is not None:
1027 sync_text = "*RECOVERING* %5.2f%%," % syncp
1029 sync_text += " ETA %ss" % compat.TryToRoman(estt, convert=roman)
1031 sync_text += " ETA unknown"
1033 sync_text = "in sync"
1035 degr_text = "*DEGRADED*"
1038 if ldisk_status == constants.LDS_FAULTY:
1039 ldisk_text = " *MISSING DISK*"
1040 elif ldisk_status == constants.LDS_UNKNOWN:
1041 ldisk_text = " *UNCERTAIN STATE*"
1044 txt += (" %s, status %s%s" % (sync_text, degr_text, ldisk_text))
1045 elif dtype == constants.LD_LV:
1046 if ldisk_status == constants.LDS_FAULTY:
1047 ldisk_text = " *FAILED* (failed drive?)"
1055 if dev["iv_name"] is not None:
1056 txt = dev["iv_name"]
1058 txt = "disk %s" % compat.TryToRoman(idx, convert=roman)
1060 txt = "child %s" % compat.TryToRoman(idx, convert=roman)
1061 if isinstance(dev["size"], int):
1062 nice_size = utils.FormatUnit(dev["size"], "h")
1064 nice_size = dev["size"]
1065 d1 = ["- %s: %s, size %s" % (txt, dev["dev_type"], nice_size)]
1068 data.append(("access mode", dev["mode"]))
1069 if dev["logical_id"] is not None:
1071 l_id = _FormatLogicalID(dev["dev_type"], dev["logical_id"], roman)
1073 l_id = [str(dev["logical_id"])]
1075 data.append(("logical_id", l_id[0]))
1078 elif dev["physical_id"] is not None:
1079 data.append("physical_id:")
1080 data.append([dev["physical_id"]])
1082 data.append(("on primary", helper(dev["dev_type"], dev["pstatus"])))
1083 if dev["sstatus"] and not static:
1084 data.append(("on secondary", helper(dev["dev_type"], dev["sstatus"])))
1087 data.append("child devices:")
1088 for c_idx, child in enumerate(dev["children"]):
1089 data.append(_FormatBlockDevInfo(c_idx, False, child, static, roman))
1094 def _FormatList(buf, data, indent_level):
1095 """Formats a list of data at a given indent level.
1097 If the element of the list is:
1098 - a string, it is simply formatted as is
1099 - a tuple, it will be split into key, value and the all the
1100 values in a list will be aligned all at the same start column
1101 - a list, will be recursively formatted
1104 @param buf: the buffer into which we write the output
1105 @param data: the list to format
1106 @type indent_level: int
1107 @param indent_level: the indent level to format at
1110 max_tlen = max([len(elem[0]) for elem in data
1111 if isinstance(elem, tuple)] or [0])
1113 if isinstance(elem, basestring):
1114 buf.write("%*s%s\n" % (2*indent_level, "", elem))
1115 elif isinstance(elem, tuple):
1117 spacer = "%*s" % (max_tlen - len(key), "")
1118 buf.write("%*s%s:%s %s\n" % (2*indent_level, "", key, spacer, value))
1119 elif isinstance(elem, list):
1120 _FormatList(buf, elem, indent_level+1)
1123 def ShowInstanceConfig(opts, args):
1124 """Compute instance run-time status.
1126 @param opts: the command line options selected by the user
1128 @param args: either an empty list, and then we query all
1129 instances, or should contain a list of instance names
1131 @return: the desired exit code
1134 if not args and not opts.show_all:
1135 ToStderr("No instance selected."
1136 " Please pass in --all if you want to query all instances.\n"
1137 "Note that this can take a long time on a big cluster.")
1139 elif args and opts.show_all:
1140 ToStderr("Cannot use --all if you specify instance names.")
1144 op = opcodes.OpInstanceQueryData(instances=args, static=opts.static,
1145 use_locking=not opts.static)
1146 result = SubmitOpCode(op, opts=opts)
1148 ToStdout("No instances.")
1153 for instance_name in result:
1154 instance = result[instance_name]
1155 buf.write("Instance name: %s\n" % instance["name"])
1156 buf.write("UUID: %s\n" % instance["uuid"])
1157 buf.write("Serial number: %s\n" %
1158 compat.TryToRoman(instance["serial_no"],
1159 convert=opts.roman_integers))
1160 buf.write("Creation time: %s\n" % utils.FormatTime(instance["ctime"]))
1161 buf.write("Modification time: %s\n" % utils.FormatTime(instance["mtime"]))
1162 buf.write("State: configured to be %s" % instance["config_state"])
1164 buf.write(", actual state is %s" % instance["run_state"])
1166 ##buf.write("Considered for memory checks in cluster verify: %s\n" %
1167 ## instance["auto_balance"])
1168 buf.write(" Nodes:\n")
1169 buf.write(" - primary: %s\n" % instance["pnode"])
1170 buf.write(" - secondaries: %s\n" % utils.CommaJoin(instance["snodes"]))
1171 buf.write(" Operating system: %s\n" % instance["os"])
1172 FormatParameterDict(buf, instance["os_instance"], instance["os_actual"],
1174 if instance.has_key("network_port"):
1175 buf.write(" Allocated network port: %s\n" %
1176 compat.TryToRoman(instance["network_port"],
1177 convert=opts.roman_integers))
1178 buf.write(" Hypervisor: %s\n" % instance["hypervisor"])
1180 # custom VNC console information
1181 vnc_bind_address = instance["hv_actual"].get(constants.HV_VNC_BIND_ADDRESS,
1183 if vnc_bind_address:
1184 port = instance["network_port"]
1185 display = int(port) - constants.VNC_BASE_PORT
1186 if display > 0 and vnc_bind_address == constants.IP4_ADDRESS_ANY:
1187 vnc_console_port = "%s:%s (display %s)" % (instance["pnode"],
1190 elif display > 0 and netutils.IP4Address.IsValid(vnc_bind_address):
1191 vnc_console_port = ("%s:%s (node %s) (display %s)" %
1192 (vnc_bind_address, port,
1193 instance["pnode"], display))
1195 # vnc bind address is a file
1196 vnc_console_port = "%s:%s" % (instance["pnode"],
1198 buf.write(" - console connection: vnc to %s\n" % vnc_console_port)
1200 FormatParameterDict(buf, instance["hv_instance"], instance["hv_actual"],
1202 buf.write(" Hardware:\n")
1203 buf.write(" - VCPUs: %s\n" %
1204 compat.TryToRoman(instance["be_actual"][constants.BE_VCPUS],
1205 convert=opts.roman_integers))
1206 buf.write(" - memory: %sMiB\n" %
1207 compat.TryToRoman(instance["be_actual"][constants.BE_MEMORY],
1208 convert=opts.roman_integers))
1209 buf.write(" - NICs:\n")
1210 for idx, (ip, mac, mode, link) in enumerate(instance["nics"]):
1211 buf.write(" - nic/%d: MAC: %s, IP: %s, mode: %s, link: %s\n" %
1212 (idx, mac, ip, mode, link))
1213 buf.write(" Disk template: %s\n" % instance["disk_template"])
1214 buf.write(" Disks:\n")
1216 for idx, device in enumerate(instance["disks"]):
1217 _FormatList(buf, _FormatBlockDevInfo(idx, True, device, opts.static,
1218 opts.roman_integers), 2)
1220 ToStdout(buf.getvalue().rstrip('\n'))
1224 def SetInstanceParams(opts, args):
1225 """Modifies an instance.
1227 All parameters take effect only at the next restart of the instance.
1229 @param opts: the command line options selected by the user
1231 @param args: should contain only one element, the instance name
1233 @return: the desired exit code
1236 if not (opts.nics or opts.disks or opts.disk_template or
1237 opts.hvparams or opts.beparams or opts.os or opts.osparams):
1238 ToStderr("Please give at least one of the parameters.")
1241 for param in opts.beparams:
1242 if isinstance(opts.beparams[param], basestring):
1243 if opts.beparams[param].lower() == "default":
1244 opts.beparams[param] = constants.VALUE_DEFAULT
1246 utils.ForceDictType(opts.beparams, constants.BES_PARAMETER_TYPES,
1247 allowed_values=[constants.VALUE_DEFAULT])
1249 for param in opts.hvparams:
1250 if isinstance(opts.hvparams[param], basestring):
1251 if opts.hvparams[param].lower() == "default":
1252 opts.hvparams[param] = constants.VALUE_DEFAULT
1254 utils.ForceDictType(opts.hvparams, constants.HVS_PARAMETER_TYPES,
1255 allowed_values=[constants.VALUE_DEFAULT])
1257 for idx, (nic_op, nic_dict) in enumerate(opts.nics):
1259 nic_op = int(nic_op)
1260 opts.nics[idx] = (nic_op, nic_dict)
1261 except (TypeError, ValueError):
1264 for idx, (disk_op, disk_dict) in enumerate(opts.disks):
1266 disk_op = int(disk_op)
1267 opts.disks[idx] = (disk_op, disk_dict)
1268 except (TypeError, ValueError):
1270 if disk_op == constants.DDM_ADD:
1271 if 'size' not in disk_dict:
1272 raise errors.OpPrereqError("Missing required parameter 'size'",
1274 disk_dict['size'] = utils.ParseUnit(disk_dict['size'])
1276 if (opts.disk_template and
1277 opts.disk_template in constants.DTS_INT_MIRROR and
1279 ToStderr("Changing the disk template to a mirrored one requires"
1280 " specifying a secondary node")
1283 op = opcodes.OpInstanceSetParams(instance_name=args[0],
1286 disk_template=opts.disk_template,
1287 remote_node=opts.node,
1288 hvparams=opts.hvparams,
1289 beparams=opts.beparams,
1291 osparams=opts.osparams,
1292 force_variant=opts.force_variant,
1294 wait_for_sync=opts.wait_for_sync)
1296 # even if here we process the result, we allow submit only
1297 result = SubmitOrSend(op, opts)
1300 ToStdout("Modified instance %s", args[0])
1301 for param, data in result:
1302 ToStdout(" - %-5s -> %s", param, data)
1303 ToStdout("Please don't forget that most parameters take effect"
1304 " only at the next start of the instance.")
1308 # multi-instance selection options
1309 m_force_multi = cli_option("--force-multiple", dest="force_multi",
1310 help="Do not ask for confirmation when more than"
1311 " one instance is affected",
1312 action="store_true", default=False)
1314 m_pri_node_opt = cli_option("--primary", dest="multi_mode",
1315 help="Filter by nodes (primary only)",
1316 const=_SHUTDOWN_NODES_PRI, action="store_const")
1318 m_sec_node_opt = cli_option("--secondary", dest="multi_mode",
1319 help="Filter by nodes (secondary only)",
1320 const=_SHUTDOWN_NODES_SEC, action="store_const")
1322 m_node_opt = cli_option("--node", dest="multi_mode",
1323 help="Filter by nodes (primary and secondary)",
1324 const=_SHUTDOWN_NODES_BOTH, action="store_const")
1326 m_clust_opt = cli_option("--all", dest="multi_mode",
1327 help="Select all instances in the cluster",
1328 const=_SHUTDOWN_CLUSTER, action="store_const")
1330 m_inst_opt = cli_option("--instance", dest="multi_mode",
1331 help="Filter by instance name [default]",
1332 const=_SHUTDOWN_INSTANCES, action="store_const")
1334 m_node_tags_opt = cli_option("--node-tags", dest="multi_mode",
1335 help="Filter by node tag",
1336 const=_SHUTDOWN_NODES_BOTH_BY_TAGS,
1337 action="store_const")
1339 m_pri_node_tags_opt = cli_option("--pri-node-tags", dest="multi_mode",
1340 help="Filter by primary node tag",
1341 const=_SHUTDOWN_NODES_PRI_BY_TAGS,
1342 action="store_const")
1344 m_sec_node_tags_opt = cli_option("--sec-node-tags", dest="multi_mode",
1345 help="Filter by secondary node tag",
1346 const=_SHUTDOWN_NODES_SEC_BY_TAGS,
1347 action="store_const")
1349 m_inst_tags_opt = cli_option("--tags", dest="multi_mode",
1350 help="Filter by instance tag",
1351 const=_SHUTDOWN_INSTANCES_BY_TAGS,
1352 action="store_const")
1354 # this is defined separately due to readability only
1364 AddInstance, [ArgHost(min=1, max=1)], COMMON_CREATE_OPTS + add_opts,
1365 "[...] -t disk-type -n node[:secondary-node] -o os-type <name>",
1366 "Creates and adds a new instance to the cluster"),
1368 BatchCreate, [ArgFile(min=1, max=1)], [DRY_RUN_OPT, PRIORITY_OPT],
1370 "Create a bunch of instances based on specs in the file."),
1372 ConnectToInstanceConsole, ARGS_ONE_INSTANCE,
1373 [SHOWCMD_OPT, PRIORITY_OPT],
1374 "[--show-cmd] <instance>", "Opens a console on the specified instance"),
1376 FailoverInstance, ARGS_ONE_INSTANCE,
1377 [FORCE_OPT, IGNORE_CONSIST_OPT, SUBMIT_OPT, SHUTDOWN_TIMEOUT_OPT,
1378 DRY_RUN_OPT, PRIORITY_OPT, DST_NODE_OPT, IALLOCATOR_OPT],
1379 "[-f] <instance>", "Stops the instance and starts it on the backup node,"
1380 " using the remote mirror (only for mirrored instances)"),
1382 MigrateInstance, ARGS_ONE_INSTANCE,
1383 [FORCE_OPT, NONLIVE_OPT, MIGRATION_MODE_OPT, CLEANUP_OPT, DRY_RUN_OPT,
1384 PRIORITY_OPT, DST_NODE_OPT, IALLOCATOR_OPT, ALLOW_FAILOVER_OPT],
1385 "[-f] <instance>", "Migrate instance to its secondary node"
1386 " (only for mirrored instances)"),
1388 MoveInstance, ARGS_ONE_INSTANCE,
1389 [FORCE_OPT, SUBMIT_OPT, SINGLE_NODE_OPT, SHUTDOWN_TIMEOUT_OPT,
1390 DRY_RUN_OPT, PRIORITY_OPT, IGNORE_CONSIST_OPT],
1391 "[-f] <instance>", "Move instance to an arbitrary node"
1392 " (only for instances of type file and lv)"),
1394 ShowInstanceConfig, ARGS_MANY_INSTANCES,
1395 [STATIC_OPT, ALL_OPT, ROMAN_OPT, PRIORITY_OPT],
1396 "[-s] {--all | <instance>...}",
1397 "Show information on the specified instance(s)"),
1399 ListInstances, ARGS_MANY_INSTANCES,
1400 [NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT, VERBOSE_OPT,
1403 "Lists the instances and their status. The available fields can be shown"
1404 " using the \"list-fields\" command (see the man page for details)."
1405 " The default field list is (in order): %s." %
1406 utils.CommaJoin(_LIST_DEF_FIELDS),
1409 ListInstanceFields, [ArgUnknown()],
1410 [NOHDR_OPT, SEP_OPT],
1412 "Lists all available fields for instances"),
1414 ReinstallInstance, [ArgInstance()],
1415 [FORCE_OPT, OS_OPT, FORCE_VARIANT_OPT, m_force_multi, m_node_opt,
1416 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, m_node_tags_opt,
1417 m_pri_node_tags_opt, m_sec_node_tags_opt, m_inst_tags_opt, SELECT_OS_OPT,
1418 SUBMIT_OPT, DRY_RUN_OPT, PRIORITY_OPT, OSPARAMS_OPT],
1419 "[-f] <instance>", "Reinstall a stopped instance"),
1421 RemoveInstance, ARGS_ONE_INSTANCE,
1422 [FORCE_OPT, SHUTDOWN_TIMEOUT_OPT, IGNORE_FAILURES_OPT, SUBMIT_OPT,
1423 DRY_RUN_OPT, PRIORITY_OPT],
1424 "[-f] <instance>", "Shuts down the instance and removes it"),
1427 [ArgInstance(min=1, max=1), ArgHost(min=1, max=1)],
1428 [NOIPCHECK_OPT, NONAMECHECK_OPT, SUBMIT_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1429 "<instance> <new_name>", "Rename the instance"),
1431 ReplaceDisks, ARGS_ONE_INSTANCE,
1432 [AUTO_REPLACE_OPT, DISKIDX_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT,
1433 NEW_SECONDARY_OPT, ON_PRIMARY_OPT, ON_SECONDARY_OPT, SUBMIT_OPT,
1434 DRY_RUN_OPT, PRIORITY_OPT],
1435 "[-s|-p|-n NODE|-I NAME] <instance>",
1436 "Replaces all disks for the instance"),
1438 SetInstanceParams, ARGS_ONE_INSTANCE,
1439 [BACKEND_OPT, DISK_OPT, FORCE_OPT, HVOPTS_OPT, NET_OPT, SUBMIT_OPT,
1440 DISK_TEMPLATE_OPT, SINGLE_NODE_OPT, OS_OPT, FORCE_VARIANT_OPT,
1441 OSPARAMS_OPT, DRY_RUN_OPT, PRIORITY_OPT, NWSYNC_OPT],
1442 "<instance>", "Alters the parameters of an instance"),
1444 GenericManyOps("shutdown", _ShutdownInstance), [ArgInstance()],
1445 [m_node_opt, m_pri_node_opt, m_sec_node_opt, m_clust_opt,
1446 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1447 m_inst_tags_opt, m_inst_opt, m_force_multi, TIMEOUT_OPT, SUBMIT_OPT,
1448 DRY_RUN_OPT, PRIORITY_OPT, IGNORE_OFFLINE_OPT, NO_REMEMBER_OPT],
1449 "<instance>", "Stops an instance"),
1451 GenericManyOps("startup", _StartupInstance), [ArgInstance()],
1452 [FORCE_OPT, m_force_multi, m_node_opt, m_pri_node_opt, m_sec_node_opt,
1453 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1454 m_inst_tags_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT, HVOPTS_OPT,
1455 BACKEND_OPT, DRY_RUN_OPT, PRIORITY_OPT, IGNORE_OFFLINE_OPT,
1457 "<instance>", "Starts an instance"),
1459 GenericManyOps("reboot", _RebootInstance), [ArgInstance()],
1460 [m_force_multi, REBOOT_TYPE_OPT, IGNORE_SECONDARIES_OPT, m_node_opt,
1461 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT,
1462 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1463 m_inst_tags_opt, SHUTDOWN_TIMEOUT_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1464 "<instance>", "Reboots an instance"),
1466 ActivateDisks, ARGS_ONE_INSTANCE,
1467 [SUBMIT_OPT, IGNORE_SIZE_OPT, PRIORITY_OPT],
1468 "<instance>", "Activate an instance's disks"),
1469 'deactivate-disks': (
1470 DeactivateDisks, ARGS_ONE_INSTANCE,
1471 [FORCE_OPT, SUBMIT_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1472 "[-f] <instance>", "Deactivate an instance's disks"),
1474 RecreateDisks, ARGS_ONE_INSTANCE,
1475 [SUBMIT_OPT, DISKIDX_OPT, NODE_PLACEMENT_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1476 "<instance>", "Recreate an instance's disks"),
1479 [ArgInstance(min=1, max=1), ArgUnknown(min=1, max=1),
1480 ArgUnknown(min=1, max=1)],
1481 [SUBMIT_OPT, NWSYNC_OPT, DRY_RUN_OPT, PRIORITY_OPT],
1482 "<instance> <disk> <size>", "Grow an instance's disk"),
1484 ListTags, ARGS_ONE_INSTANCE, [PRIORITY_OPT],
1485 "<instance_name>", "List the tags of the given instance"),
1487 AddTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1488 [TAG_SRC_OPT, PRIORITY_OPT],
1489 "<instance_name> tag...", "Add tags to the given instance"),
1491 RemoveTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1492 [TAG_SRC_OPT, PRIORITY_OPT],
1493 "<instance_name> tag...", "Remove tags from given instance"),
1496 #: dictionary with aliases for commands
1504 return GenericMain(commands, aliases=aliases,
1505 override={"tag_type": constants.TAG_INSTANCE})