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 "force_variant": False,
391 "file_driver": 'loop'}
393 def _PopulateWithDefaults(spec):
394 """Returns a new hash combined with default values."""
395 mydict = _DEFAULT_SPECS.copy()
400 """Validate the instance specs."""
401 # Validate fields required under any circumstances
402 for required_field in ('os', 'template'):
403 if required_field not in spec:
404 raise errors.OpPrereqError('Required field "%s" is missing.' %
405 required_field, errors.ECODE_INVAL)
406 # Validate special fields
407 if spec['primary_node'] is not None:
408 if (spec['template'] in constants.DTS_NET_MIRROR and
409 spec['secondary_node'] is None):
410 raise errors.OpPrereqError('Template requires secondary node, but'
411 ' there was no secondary provided.',
413 elif spec['iallocator'] is None:
414 raise errors.OpPrereqError('You have to provide at least a primary_node'
415 ' or an iallocator.',
418 if (spec['hvparams'] and
419 not isinstance(spec['hvparams'], dict)):
420 raise errors.OpPrereqError('Hypervisor parameters must be a dict.',
423 json_filename = args[0]
425 instance_data = simplejson.loads(utils.ReadFile(json_filename))
426 except Exception, err: # pylint: disable-msg=W0703
427 ToStderr("Can't parse the instance definition file: %s" % str(err))
430 if not isinstance(instance_data, dict):
431 ToStderr("The instance definition file is not in dict format.")
434 jex = JobExecutor(opts=opts)
436 # Iterate over the instances and do:
437 # * Populate the specs with default value
438 # * Validate the instance specs
439 i_names = utils.NiceSort(instance_data.keys()) # pylint: disable-msg=E1103
441 specs = instance_data[name]
442 specs = _PopulateWithDefaults(specs)
445 hypervisor = specs['hypervisor']
446 hvparams = specs['hvparams']
449 for elem in specs['disk_size']:
451 size = utils.ParseUnit(elem)
452 except (TypeError, ValueError), err:
453 raise errors.OpPrereqError("Invalid disk size '%s' for"
455 (elem, name, err), errors.ECODE_INVAL)
456 disks.append({"size": size})
458 utils.ForceDictType(specs['backend'], constants.BES_PARAMETER_TYPES)
459 utils.ForceDictType(hvparams, constants.HVS_PARAMETER_TYPES)
462 for field in ('ip', 'mac', 'mode', 'link', 'bridge'):
466 tmp_nics[0][field] = specs[field]
468 if specs['nics'] is not None and tmp_nics:
469 raise errors.OpPrereqError("'nics' list incompatible with using"
470 " individual nic fields as well",
472 elif specs['nics'] is not None:
473 tmp_nics = specs['nics']
477 op = opcodes.OpCreateInstance(instance_name=name,
479 disk_template=specs['template'],
480 mode=constants.INSTANCE_CREATE,
482 force_variant=specs["force_variant"],
483 pnode=specs['primary_node'],
484 snode=specs['secondary_node'],
486 start=specs['start'],
487 ip_check=specs['ip_check'],
488 name_check=specs['name_check'],
490 iallocator=specs['iallocator'],
491 hypervisor=hypervisor,
493 beparams=specs['backend'],
494 file_storage_dir=specs['file_storage_dir'],
495 file_driver=specs['file_driver'])
497 jex.QueueJob(name, op)
498 # we never want to wait, just show the submitted job IDs
499 jex.WaitOrShow(False)
504 def ReinstallInstance(opts, args):
505 """Reinstall an instance.
507 @param opts: the command line options selected by the user
509 @param args: should contain only one element, the name of the
510 instance to be reinstalled
512 @return: the desired exit code
515 # first, compute the desired name list
516 if opts.multi_mode is None:
517 opts.multi_mode = _SHUTDOWN_INSTANCES
519 inames = _ExpandMultiNames(opts.multi_mode, args)
521 raise errors.OpPrereqError("Selection filter does not match any instances",
524 # second, if requested, ask for an OS
525 if opts.select_os is True:
526 op = opcodes.OpDiagnoseOS(output_fields=["name", "valid", "variants"],
528 result = SubmitOpCode(op, opts=opts)
531 ToStdout("Can't get the OS list")
534 ToStdout("Available OS templates:")
537 for (name, valid, variants) in result:
539 for entry in CalculateOSNames(name, variants):
540 ToStdout("%3s: %s", number, entry)
541 choices.append(("%s" % number, entry, entry))
544 choices.append(('x', 'exit', 'Exit gnt-instance reinstall'))
545 selected = AskUser("Enter OS template number (or x to abort):",
548 if selected == 'exit':
549 ToStderr("User aborted reinstall, exiting")
556 # third, get confirmation: multi-reinstall requires --force-multi
557 # *and* --force, single-reinstall just --force
558 multi_on = opts.multi_mode != _SHUTDOWN_INSTANCES or len(inames) > 1
560 warn_msg = "Note: this will remove *all* data for the below instances!\n"
561 if not ((opts.force_multi and opts.force) or
562 _ConfirmOperation(inames, "reinstall", extra=warn_msg)):
566 usertext = ("This will reinstall the instance %s and remove"
567 " all data. Continue?") % inames[0]
568 if not AskUser(usertext):
571 jex = JobExecutor(verbose=multi_on, opts=opts)
572 for instance_name in inames:
573 op = opcodes.OpReinstallInstance(instance_name=instance_name,
575 force_variant=opts.force_variant)
576 jex.QueueJob(instance_name, op)
578 jex.WaitOrShow(not opts.submit_only)
582 def RemoveInstance(opts, args):
583 """Remove an instance.
585 @param opts: the command line options selected by the user
587 @param args: should contain only one element, the name of
588 the instance to be removed
590 @return: the desired exit code
593 instance_name = args[0]
598 _EnsureInstancesExist(cl, [instance_name])
600 usertext = ("This will remove the volumes of the instance %s"
601 " (including mirrors), thus removing all the data"
602 " of the instance. Continue?") % instance_name
603 if not AskUser(usertext):
606 op = opcodes.OpRemoveInstance(instance_name=instance_name,
607 ignore_failures=opts.ignore_failures,
608 shutdown_timeout=opts.shutdown_timeout)
609 SubmitOrSend(op, opts, cl=cl)
613 def RenameInstance(opts, args):
614 """Rename an instance.
616 @param opts: the command line options selected by the user
618 @param args: should contain two elements, the old and the
621 @return: the desired exit code
624 op = opcodes.OpRenameInstance(instance_name=args[0],
626 ignore_ip=not opts.ip_check)
627 SubmitOrSend(op, opts)
631 def ActivateDisks(opts, args):
632 """Activate an instance's disks.
634 This serves two purposes:
635 - it allows (as long as the instance is not running)
636 mounting the disks and modifying them from the node
637 - it repairs inactive secondary drbds
639 @param opts: the command line options selected by the user
641 @param args: should contain only one element, the instance name
643 @return: the desired exit code
646 instance_name = args[0]
647 op = opcodes.OpActivateInstanceDisks(instance_name=instance_name,
648 ignore_size=opts.ignore_size)
649 disks_info = SubmitOrSend(op, opts)
650 for host, iname, nname in disks_info:
651 ToStdout("%s:%s:%s", host, iname, nname)
655 def DeactivateDisks(opts, args):
656 """Deactivate an instance's disks.
658 This function takes the instance name, looks for its primary node
659 and the tries to shutdown its block devices on that node.
661 @param opts: the command line options selected by the user
663 @param args: should contain only one element, the instance name
665 @return: the desired exit code
668 instance_name = args[0]
669 op = opcodes.OpDeactivateInstanceDisks(instance_name=instance_name)
670 SubmitOrSend(op, opts)
674 def RecreateDisks(opts, args):
675 """Recreate an instance's disks.
677 @param opts: the command line options selected by the user
679 @param args: should contain only one element, the instance name
681 @return: the desired exit code
684 instance_name = args[0]
687 opts.disks = [int(v) for v in opts.disks.split(",")]
688 except (ValueError, TypeError), err:
689 ToStderr("Invalid disks value: %s" % str(err))
694 op = opcodes.OpRecreateInstanceDisks(instance_name=instance_name,
696 SubmitOrSend(op, opts)
700 def GrowDisk(opts, args):
701 """Grow an instance's disks.
703 @param opts: the command line options selected by the user
705 @param args: should contain two elements, the instance name
706 whose disks we grow and the disk name, e.g. I{sda}
708 @return: the desired exit code
715 except (TypeError, ValueError), err:
716 raise errors.OpPrereqError("Invalid disk index: %s" % str(err),
718 amount = utils.ParseUnit(args[2])
719 op = opcodes.OpGrowDisk(instance_name=instance, disk=disk, amount=amount,
720 wait_for_sync=opts.wait_for_sync)
721 SubmitOrSend(op, opts)
725 def _StartupInstance(name, opts):
726 """Startup instances.
728 This returns the opcode to start an instance, and its decorator will
729 wrap this into a loop starting all desired instances.
731 @param name: the name of the instance to act on
732 @param opts: the command line options selected by the user
733 @return: the opcode needed for the operation
736 op = opcodes.OpStartupInstance(instance_name=name,
738 # do not add these parameters to the opcode unless they're defined
740 op.hvparams = opts.hvparams
742 op.beparams = opts.beparams
746 def _RebootInstance(name, opts):
747 """Reboot instance(s).
749 This returns the opcode to reboot an instance, and its decorator
750 will wrap this into a loop rebooting all desired instances.
752 @param name: the name of the instance to act on
753 @param opts: the command line options selected by the user
754 @return: the opcode needed for the operation
757 return opcodes.OpRebootInstance(instance_name=name,
758 reboot_type=opts.reboot_type,
759 ignore_secondaries=opts.ignore_secondaries,
760 shutdown_timeout=opts.shutdown_timeout)
763 def _ShutdownInstance(name, opts):
764 """Shutdown an instance.
766 This returns the opcode to shutdown an instance, and its decorator
767 will wrap this into a loop shutting down all desired instances.
769 @param name: the name of the instance to act on
770 @param opts: the command line options selected by the user
771 @return: the opcode needed for the operation
774 return opcodes.OpShutdownInstance(instance_name=name,
775 timeout=opts.timeout)
778 def ReplaceDisks(opts, args):
779 """Replace the disks of an instance
781 @param opts: the command line options selected by the user
783 @param args: should contain only one element, the instance name
785 @return: the desired exit code
788 new_2ndary = opts.dst_node
789 iallocator = opts.iallocator
790 if opts.disks is None:
794 disks = [int(i) for i in opts.disks.split(",")]
795 except (TypeError, ValueError), err:
796 raise errors.OpPrereqError("Invalid disk index passed: %s" % str(err),
798 cnt = [opts.on_primary, opts.on_secondary, opts.auto,
799 new_2ndary is not None, iallocator is not None].count(True)
801 raise errors.OpPrereqError("One and only one of the -p, -s, -a, -n and -i"
802 " options must be passed", errors.ECODE_INVAL)
803 elif opts.on_primary:
804 mode = constants.REPLACE_DISK_PRI
805 elif opts.on_secondary:
806 mode = constants.REPLACE_DISK_SEC
808 mode = constants.REPLACE_DISK_AUTO
810 raise errors.OpPrereqError("Cannot specify disks when using automatic"
811 " mode", errors.ECODE_INVAL)
812 elif new_2ndary is not None or iallocator is not None:
814 mode = constants.REPLACE_DISK_CHG
816 op = opcodes.OpReplaceDisks(instance_name=args[0], disks=disks,
817 remote_node=new_2ndary, mode=mode,
818 iallocator=iallocator,
819 early_release=opts.early_release)
820 SubmitOrSend(op, opts)
824 def FailoverInstance(opts, args):
825 """Failover an instance.
827 The failover is done by shutting it down on its present node and
828 starting it on the secondary.
830 @param opts: the command line options selected by the user
832 @param args: should contain only one element, the instance name
834 @return: the desired exit code
838 instance_name = args[0]
842 _EnsureInstancesExist(cl, [instance_name])
844 usertext = ("Failover will happen to image %s."
845 " This requires a shutdown of the instance. Continue?" %
847 if not AskUser(usertext):
850 op = opcodes.OpFailoverInstance(instance_name=instance_name,
851 ignore_consistency=opts.ignore_consistency,
852 shutdown_timeout=opts.shutdown_timeout)
853 SubmitOrSend(op, opts, cl=cl)
857 def MigrateInstance(opts, args):
858 """Migrate an instance.
860 The migrate is done without shutdown.
862 @param opts: the command line options selected by the user
864 @param args: should contain only one element, the instance name
866 @return: the desired exit code
870 instance_name = args[0]
874 _EnsureInstancesExist(cl, [instance_name])
877 usertext = ("Instance %s will be recovered from a failed migration."
878 " Note that the migration procedure (including cleanup)" %
881 usertext = ("Instance %s will be migrated. Note that migration" %
883 usertext += (" might impact the instance if anything goes wrong"
884 " (e.g. due to bugs in the hypervisor). Continue?")
885 if not AskUser(usertext):
888 op = opcodes.OpMigrateInstance(instance_name=instance_name, live=opts.live,
889 cleanup=opts.cleanup)
890 SubmitOpCode(op, cl=cl, opts=opts)
894 def MoveInstance(opts, args):
897 @param opts: the command line options selected by the user
899 @param args: should contain only one element, the instance name
901 @return: the desired exit code
905 instance_name = args[0]
909 usertext = ("Instance %s will be moved."
910 " This requires a shutdown of the instance. Continue?" %
912 if not AskUser(usertext):
915 op = opcodes.OpMoveInstance(instance_name=instance_name,
916 target_node=opts.node,
917 shutdown_timeout=opts.shutdown_timeout)
918 SubmitOrSend(op, opts, cl=cl)
922 def ConnectToInstanceConsole(opts, args):
923 """Connect to the console of an instance.
925 @param opts: the command line options selected by the user
927 @param args: should contain only one element, the instance name
929 @return: the desired exit code
932 instance_name = args[0]
934 op = opcodes.OpConnectConsole(instance_name=instance_name)
935 cmd = SubmitOpCode(op, opts=opts)
937 if opts.show_command:
938 ToStdout("%s", utils.ShellQuoteArgs(cmd))
941 os.execvp(cmd[0], cmd)
943 ToStderr("Can't run console command %s with arguments:\n'%s'",
944 cmd[0], " ".join(cmd))
945 os._exit(1) # pylint: disable-msg=W0212
948 def _FormatLogicalID(dev_type, logical_id, roman):
949 """Formats the logical_id of a disk.
952 if dev_type == constants.LD_DRBD8:
953 node_a, node_b, port, minor_a, minor_b, key = logical_id
955 ("nodeA", "%s, minor=%s" % (node_a, compat.TryToRoman(minor_a,
957 ("nodeB", "%s, minor=%s" % (node_b, compat.TryToRoman(minor_b,
959 ("port", compat.TryToRoman(port, convert=roman)),
962 elif dev_type == constants.LD_LV:
963 vg_name, lv_name = logical_id
964 data = ["%s/%s" % (vg_name, lv_name)]
966 data = [str(logical_id)]
971 def _FormatBlockDevInfo(idx, top_level, dev, static, roman):
972 """Show block device information.
974 This is only used by L{ShowInstanceConfig}, but it's too big to be
975 left for an inline definition.
978 @param idx: the index of the current disk
979 @type top_level: boolean
980 @param top_level: if this a top-level disk?
982 @param dev: dictionary with disk information
983 @type static: boolean
984 @param static: wheter the device information doesn't contain
985 runtime information but only static data
987 @param roman: whether to try to use roman integers
988 @return: a list of either strings, tuples or lists
989 (which should be formatted at a higher indent level)
992 def helper(dtype, status):
993 """Format one line for physical device status.
996 @param dtype: a constant from the L{constants.LDS_BLOCK} set
998 @param status: a tuple as returned from L{backend.FindBlockDevice}
999 @return: the string representing the status
1005 (path, major, minor, syncp, estt, degr, ldisk_status) = status
1007 major_string = "N/A"
1009 major_string = str(compat.TryToRoman(major, convert=roman))
1012 minor_string = "N/A"
1014 minor_string = str(compat.TryToRoman(minor, convert=roman))
1016 txt += ("%s (%s:%s)" % (path, major_string, minor_string))
1017 if dtype in (constants.LD_DRBD8, ):
1018 if syncp is not None:
1019 sync_text = "*RECOVERING* %5.2f%%," % syncp
1021 sync_text += " ETA %ss" % compat.TryToRoman(estt, convert=roman)
1023 sync_text += " ETA unknown"
1025 sync_text = "in sync"
1027 degr_text = "*DEGRADED*"
1030 if ldisk_status == constants.LDS_FAULTY:
1031 ldisk_text = " *MISSING DISK*"
1032 elif ldisk_status == constants.LDS_UNKNOWN:
1033 ldisk_text = " *UNCERTAIN STATE*"
1036 txt += (" %s, status %s%s" % (sync_text, degr_text, ldisk_text))
1037 elif dtype == constants.LD_LV:
1038 if ldisk_status == constants.LDS_FAULTY:
1039 ldisk_text = " *FAILED* (failed drive?)"
1047 if dev["iv_name"] is not None:
1048 txt = dev["iv_name"]
1050 txt = "disk %s" % compat.TryToRoman(idx, convert=roman)
1052 txt = "child %s" % compat.TryToRoman(idx, convert=roman)
1053 if isinstance(dev["size"], int):
1054 nice_size = utils.FormatUnit(dev["size"], "h")
1056 nice_size = dev["size"]
1057 d1 = ["- %s: %s, size %s" % (txt, dev["dev_type"], nice_size)]
1060 data.append(("access mode", dev["mode"]))
1061 if dev["logical_id"] is not None:
1063 l_id = _FormatLogicalID(dev["dev_type"], dev["logical_id"], roman)
1065 l_id = [str(dev["logical_id"])]
1067 data.append(("logical_id", l_id[0]))
1070 elif dev["physical_id"] is not None:
1071 data.append("physical_id:")
1072 data.append([dev["physical_id"]])
1074 data.append(("on primary", helper(dev["dev_type"], dev["pstatus"])))
1075 if dev["sstatus"] and not static:
1076 data.append(("on secondary", helper(dev["dev_type"], dev["sstatus"])))
1079 data.append("child devices:")
1080 for c_idx, child in enumerate(dev["children"]):
1081 data.append(_FormatBlockDevInfo(c_idx, False, child, static, roman))
1086 def _FormatList(buf, data, indent_level):
1087 """Formats a list of data at a given indent level.
1089 If the element of the list is:
1090 - a string, it is simply formatted as is
1091 - a tuple, it will be split into key, value and the all the
1092 values in a list will be aligned all at the same start column
1093 - a list, will be recursively formatted
1096 @param buf: the buffer into which we write the output
1097 @param data: the list to format
1098 @type indent_level: int
1099 @param indent_level: the indent level to format at
1102 max_tlen = max([len(elem[0]) for elem in data
1103 if isinstance(elem, tuple)] or [0])
1105 if isinstance(elem, basestring):
1106 buf.write("%*s%s\n" % (2*indent_level, "", elem))
1107 elif isinstance(elem, tuple):
1109 spacer = "%*s" % (max_tlen - len(key), "")
1110 buf.write("%*s%s:%s %s\n" % (2*indent_level, "", key, spacer, value))
1111 elif isinstance(elem, list):
1112 _FormatList(buf, elem, indent_level+1)
1115 def ShowInstanceConfig(opts, args):
1116 """Compute instance run-time status.
1118 @param opts: the command line options selected by the user
1120 @param args: either an empty list, and then we query all
1121 instances, or should contain a list of instance names
1123 @return: the desired exit code
1126 if not args and not opts.show_all:
1127 ToStderr("No instance selected."
1128 " Please pass in --all if you want to query all instances.\n"
1129 "Note that this can take a long time on a big cluster.")
1131 elif args and opts.show_all:
1132 ToStderr("Cannot use --all if you specify instance names.")
1136 op = opcodes.OpQueryInstanceData(instances=args, static=opts.static)
1137 result = SubmitOpCode(op, opts=opts)
1139 ToStdout("No instances.")
1144 for instance_name in result:
1145 instance = result[instance_name]
1146 buf.write("Instance name: %s\n" % instance["name"])
1147 buf.write("UUID: %s\n" % instance["uuid"])
1148 buf.write("Serial number: %s\n" %
1149 compat.TryToRoman(instance["serial_no"],
1150 convert=opts.roman_integers))
1151 buf.write("Creation time: %s\n" % utils.FormatTime(instance["ctime"]))
1152 buf.write("Modification time: %s\n" % utils.FormatTime(instance["mtime"]))
1153 buf.write("State: configured to be %s" % instance["config_state"])
1155 buf.write(", actual state is %s" % instance["run_state"])
1157 ##buf.write("Considered for memory checks in cluster verify: %s\n" %
1158 ## instance["auto_balance"])
1159 buf.write(" Nodes:\n")
1160 buf.write(" - primary: %s\n" % instance["pnode"])
1161 buf.write(" - secondaries: %s\n" % utils.CommaJoin(instance["snodes"]))
1162 buf.write(" Operating system: %s\n" % instance["os"])
1163 if instance.has_key("network_port"):
1164 buf.write(" Allocated network port: %s\n" %
1165 compat.TryToRoman(instance["network_port"],
1166 convert=opts.roman_integers))
1167 buf.write(" Hypervisor: %s\n" % instance["hypervisor"])
1169 # custom VNC console information
1170 vnc_bind_address = instance["hv_actual"].get(constants.HV_VNC_BIND_ADDRESS,
1172 if vnc_bind_address:
1173 port = instance["network_port"]
1174 display = int(port) - constants.VNC_BASE_PORT
1175 if display > 0 and vnc_bind_address == constants.BIND_ADDRESS_GLOBAL:
1176 vnc_console_port = "%s:%s (display %s)" % (instance["pnode"],
1179 elif display > 0 and utils.IsValidIP(vnc_bind_address):
1180 vnc_console_port = ("%s:%s (node %s) (display %s)" %
1181 (vnc_bind_address, port,
1182 instance["pnode"], display))
1184 # vnc bind address is a file
1185 vnc_console_port = "%s:%s" % (instance["pnode"],
1187 buf.write(" - console connection: vnc to %s\n" % vnc_console_port)
1189 for key in sorted(instance["hv_actual"]):
1190 if key in instance["hv_instance"]:
1191 val = instance["hv_instance"][key]
1193 val = "default (%s)" % instance["hv_actual"][key]
1194 buf.write(" - %s: %s\n" % (key, val))
1195 buf.write(" Hardware:\n")
1196 buf.write(" - VCPUs: %s\n" %
1197 compat.TryToRoman(instance["be_actual"][constants.BE_VCPUS],
1198 convert=opts.roman_integers))
1199 buf.write(" - memory: %sMiB\n" %
1200 compat.TryToRoman(instance["be_actual"][constants.BE_MEMORY],
1201 convert=opts.roman_integers))
1202 buf.write(" - NICs:\n")
1203 for idx, (ip, mac, mode, link) in enumerate(instance["nics"]):
1204 buf.write(" - nic/%d: MAC: %s, IP: %s, mode: %s, link: %s\n" %
1205 (idx, mac, ip, mode, link))
1206 buf.write(" Disks:\n")
1208 for idx, device in enumerate(instance["disks"]):
1209 _FormatList(buf, _FormatBlockDevInfo(idx, True, device, opts.static,
1210 opts.roman_integers), 2)
1212 ToStdout(buf.getvalue().rstrip('\n'))
1216 def SetInstanceParams(opts, args):
1217 """Modifies an instance.
1219 All parameters take effect only at the next restart of the instance.
1221 @param opts: the command line options selected by the user
1223 @param args: should contain only one element, the instance name
1225 @return: the desired exit code
1228 if not (opts.nics or opts.disks or opts.disk_template or
1229 opts.hvparams or opts.beparams or opts.os):
1230 ToStderr("Please give at least one of the parameters.")
1233 for param in opts.beparams:
1234 if isinstance(opts.beparams[param], basestring):
1235 if opts.beparams[param].lower() == "default":
1236 opts.beparams[param] = constants.VALUE_DEFAULT
1238 utils.ForceDictType(opts.beparams, constants.BES_PARAMETER_TYPES,
1239 allowed_values=[constants.VALUE_DEFAULT])
1241 for param in opts.hvparams:
1242 if isinstance(opts.hvparams[param], basestring):
1243 if opts.hvparams[param].lower() == "default":
1244 opts.hvparams[param] = constants.VALUE_DEFAULT
1246 utils.ForceDictType(opts.hvparams, constants.HVS_PARAMETER_TYPES,
1247 allowed_values=[constants.VALUE_DEFAULT])
1249 for idx, (nic_op, nic_dict) in enumerate(opts.nics):
1251 nic_op = int(nic_op)
1252 opts.nics[idx] = (nic_op, nic_dict)
1253 except (TypeError, ValueError):
1256 for idx, (disk_op, disk_dict) in enumerate(opts.disks):
1258 disk_op = int(disk_op)
1259 opts.disks[idx] = (disk_op, disk_dict)
1260 except (TypeError, ValueError):
1262 if disk_op == constants.DDM_ADD:
1263 if 'size' not in disk_dict:
1264 raise errors.OpPrereqError("Missing required parameter 'size'",
1266 disk_dict['size'] = utils.ParseUnit(disk_dict['size'])
1268 if (opts.disk_template and
1269 opts.disk_template in constants.DTS_NET_MIRROR and
1271 ToStderr("Changing the disk template to a mirrored one requires"
1272 " specifying a secondary node")
1275 op = opcodes.OpSetInstanceParams(instance_name=args[0],
1278 disk_template=opts.disk_template,
1279 remote_node=opts.node,
1280 hvparams=opts.hvparams,
1281 beparams=opts.beparams,
1283 force_variant=opts.force_variant,
1286 # even if here we process the result, we allow submit only
1287 result = SubmitOrSend(op, opts)
1290 ToStdout("Modified instance %s", args[0])
1291 for param, data in result:
1292 ToStdout(" - %-5s -> %s", param, data)
1293 ToStdout("Please don't forget that most parameters take effect"
1294 " only at the next start of the instance.")
1298 # multi-instance selection options
1299 m_force_multi = cli_option("--force-multiple", dest="force_multi",
1300 help="Do not ask for confirmation when more than"
1301 " one instance is affected",
1302 action="store_true", default=False)
1304 m_pri_node_opt = cli_option("--primary", dest="multi_mode",
1305 help="Filter by nodes (primary only)",
1306 const=_SHUTDOWN_NODES_PRI, action="store_const")
1308 m_sec_node_opt = cli_option("--secondary", dest="multi_mode",
1309 help="Filter by nodes (secondary only)",
1310 const=_SHUTDOWN_NODES_SEC, action="store_const")
1312 m_node_opt = cli_option("--node", dest="multi_mode",
1313 help="Filter by nodes (primary and secondary)",
1314 const=_SHUTDOWN_NODES_BOTH, action="store_const")
1316 m_clust_opt = cli_option("--all", dest="multi_mode",
1317 help="Select all instances in the cluster",
1318 const=_SHUTDOWN_CLUSTER, action="store_const")
1320 m_inst_opt = cli_option("--instance", dest="multi_mode",
1321 help="Filter by instance name [default]",
1322 const=_SHUTDOWN_INSTANCES, action="store_const")
1324 m_node_tags_opt = cli_option("--node-tags", dest="multi_mode",
1325 help="Filter by node tag",
1326 const=_SHUTDOWN_NODES_BOTH_BY_TAGS,
1327 action="store_const")
1329 m_pri_node_tags_opt = cli_option("--pri-node-tags", dest="multi_mode",
1330 help="Filter by primary node tag",
1331 const=_SHUTDOWN_NODES_PRI_BY_TAGS,
1332 action="store_const")
1334 m_sec_node_tags_opt = cli_option("--sec-node-tags", dest="multi_mode",
1335 help="Filter by secondary node tag",
1336 const=_SHUTDOWN_NODES_SEC_BY_TAGS,
1337 action="store_const")
1339 m_inst_tags_opt = cli_option("--tags", dest="multi_mode",
1340 help="Filter by instance tag",
1341 const=_SHUTDOWN_INSTANCES_BY_TAGS,
1342 action="store_const")
1344 # this is defined separately due to readability only
1350 FILESTORE_DRIVER_OPT,
1369 AddInstance, [ArgHost(min=1, max=1)], add_opts,
1370 "[...] -t disk-type -n node[:secondary-node] -o os-type <name>",
1371 "Creates and adds a new instance to the cluster"),
1373 BatchCreate, [ArgFile(min=1, max=1)], [],
1375 "Create a bunch of instances based on specs in the file."),
1377 ConnectToInstanceConsole, ARGS_ONE_INSTANCE,
1379 "[--show-cmd] <instance>", "Opens a console on the specified instance"),
1381 FailoverInstance, ARGS_ONE_INSTANCE,
1382 [FORCE_OPT, IGNORE_CONSIST_OPT, SUBMIT_OPT, SHUTDOWN_TIMEOUT_OPT],
1383 "[-f] <instance>", "Stops the instance and starts it on the backup node,"
1384 " using the remote mirror (only for instances of type drbd)"),
1386 MigrateInstance, ARGS_ONE_INSTANCE,
1387 [FORCE_OPT, NONLIVE_OPT, CLEANUP_OPT],
1388 "[-f] <instance>", "Migrate instance to its secondary node"
1389 " (only for instances of type drbd)"),
1391 MoveInstance, ARGS_ONE_INSTANCE,
1392 [FORCE_OPT, SUBMIT_OPT, SINGLE_NODE_OPT, SHUTDOWN_TIMEOUT_OPT],
1393 "[-f] <instance>", "Move instance to an arbitrary node"
1394 " (only for instances of type file and lv)"),
1396 ShowInstanceConfig, ARGS_MANY_INSTANCES,
1397 [STATIC_OPT, ALL_OPT, ROMAN_OPT],
1398 "[-s] {--all | <instance>...}",
1399 "Show information on the specified instance(s)"),
1401 ListInstances, ARGS_MANY_INSTANCES,
1402 [NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT, SYNC_OPT, ROMAN_OPT],
1404 "Lists the instances and their status. The available fields are"
1405 " (see the man page for details): status, oper_state, oper_ram,"
1406 " name, os, pnode, snodes, admin_state, admin_ram, disk_template,"
1407 " ip, mac, nic_mode, nic_link, sda_size, sdb_size, vcpus, serial_no,"
1408 " nic.count, nic.mac/N, nic.ip/N, nic.mode/N, nic.link/N,"
1409 " nic.macs, nic.ips, nic.modes, nic.links,"
1410 " disk.count, disk.size/N, disk.sizes,"
1411 " hv/NAME, be/memory, be/vcpus, be/auto_balance,"
1413 " The default field"
1414 " list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS),
1417 ReinstallInstance, [ArgInstance()],
1418 [FORCE_OPT, OS_OPT, FORCE_VARIANT_OPT, m_force_multi, m_node_opt,
1419 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, m_node_tags_opt,
1420 m_pri_node_tags_opt, m_sec_node_tags_opt, m_inst_tags_opt, SELECT_OS_OPT,
1422 "[-f] <instance>", "Reinstall a stopped instance"),
1424 RemoveInstance, ARGS_ONE_INSTANCE,
1425 [FORCE_OPT, SHUTDOWN_TIMEOUT_OPT, IGNORE_FAILURES_OPT, SUBMIT_OPT],
1426 "[-f] <instance>", "Shuts down the instance and removes it"),
1429 [ArgInstance(min=1, max=1), ArgHost(min=1, max=1)],
1430 [NOIPCHECK_OPT, SUBMIT_OPT],
1431 "<instance> <new_name>", "Rename the instance"),
1433 ReplaceDisks, ARGS_ONE_INSTANCE,
1434 [AUTO_REPLACE_OPT, DISKIDX_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT,
1435 NEW_SECONDARY_OPT, ON_PRIMARY_OPT, ON_SECONDARY_OPT, SUBMIT_OPT],
1436 "[-s|-p|-n NODE|-I NAME] <instance>",
1437 "Replaces all disks for the instance"),
1439 SetInstanceParams, ARGS_ONE_INSTANCE,
1440 [BACKEND_OPT, DISK_OPT, FORCE_OPT, HVOPTS_OPT, NET_OPT, SUBMIT_OPT,
1441 DISK_TEMPLATE_OPT, SINGLE_NODE_OPT, OS_OPT, FORCE_VARIANT_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 "<instance>", "Stops an instance"),
1450 GenericManyOps("startup", _StartupInstance), [ArgInstance()],
1451 [FORCE_OPT, m_force_multi, m_node_opt, m_pri_node_opt, m_sec_node_opt,
1452 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1453 m_inst_tags_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT, HVOPTS_OPT,
1455 "<instance>", "Starts an instance"),
1457 GenericManyOps("reboot", _RebootInstance), [ArgInstance()],
1458 [m_force_multi, REBOOT_TYPE_OPT, IGNORE_SECONDARIES_OPT, m_node_opt,
1459 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT,
1460 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1461 m_inst_tags_opt, SHUTDOWN_TIMEOUT_OPT],
1462 "<instance>", "Reboots an instance"),
1464 ActivateDisks, ARGS_ONE_INSTANCE, [SUBMIT_OPT, IGNORE_SIZE_OPT],
1465 "<instance>", "Activate an instance's disks"),
1466 'deactivate-disks': (
1467 DeactivateDisks, ARGS_ONE_INSTANCE, [SUBMIT_OPT],
1468 "<instance>", "Deactivate an instance's disks"),
1470 RecreateDisks, ARGS_ONE_INSTANCE, [SUBMIT_OPT, DISKIDX_OPT],
1471 "<instance>", "Recreate an instance's disks"),
1474 [ArgInstance(min=1, max=1), ArgUnknown(min=1, max=1),
1475 ArgUnknown(min=1, max=1)],
1476 [SUBMIT_OPT, NWSYNC_OPT],
1477 "<instance> <disk> <size>", "Grow an instance's disk"),
1479 ListTags, ARGS_ONE_INSTANCE, [],
1480 "<instance_name>", "List the tags of the given instance"),
1482 AddTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1484 "<instance_name> tag...", "Add tags to the given instance"),
1486 RemoveTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1488 "<instance_name> tag...", "Remove tags from given instance"),
1491 #: dictionary with aliases for commands
1493 'activate_block_devs': 'activate-disks',
1494 'replace_disks': 'replace-disks',
1500 if __name__ == '__main__':
1501 sys.exit(GenericMain(commands, aliases=aliases,
1502 override={"tag_type": constants.TAG_INSTANCE}))