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 results = jex.WaitOrShow(not opts.submit_only)
231 rcode = compat.all(row[0] for row in results)
232 return int(not rcode)
236 def ListInstances(opts, args):
237 """List instances and their properties.
239 @param opts: the command line options selected by the user
241 @param args: should be an empty list
243 @return: the desired exit code
246 if opts.output is None:
247 selected_fields = _LIST_DEF_FIELDS
248 elif opts.output.startswith("+"):
249 selected_fields = _LIST_DEF_FIELDS + opts.output[1:].split(",")
251 selected_fields = opts.output.split(",")
253 output = GetClient().QueryInstances(args, selected_fields, opts.do_locking)
255 if not opts.no_headers:
257 "name": "Instance", "os": "OS", "pnode": "Primary_node",
258 "snodes": "Secondary_Nodes", "admin_state": "Autostart",
259 "oper_state": "Running",
260 "oper_ram": "Memory", "disk_template": "Disk_template",
261 "ip": "IP_address", "mac": "MAC_address",
262 "nic_mode": "NIC_Mode", "nic_link": "NIC_Link",
264 "sda_size": "Disk/0", "sdb_size": "Disk/1",
265 "disk_usage": "DiskUsage",
266 "status": "Status", "tags": "Tags",
267 "network_port": "Network_port",
268 "hv/kernel_path": "Kernel_path",
269 "hv/initrd_path": "Initrd_path",
270 "hv/boot_order": "Boot_order",
273 "hv/cdrom_image_path": "CDROM_image_path",
274 "hv/nic_type": "NIC_type",
275 "hv/disk_type": "Disk_type",
276 "hv/vnc_bind_address": "VNC_bind_address",
277 "serial_no": "SerialNo", "hypervisor": "Hypervisor",
278 "hvparams": "Hypervisor_parameters",
279 "be/memory": "Configured_memory",
282 "be/auto_balance": "Auto_balance",
283 "disk.count": "Disks", "disk.sizes": "Disk_sizes",
284 "nic.count": "NICs", "nic.ips": "NIC_IPs",
285 "nic.modes": "NIC_modes", "nic.links": "NIC_links",
286 "nic.bridges": "NIC_bridges", "nic.macs": "NIC_MACs",
287 "ctime": "CTime", "mtime": "MTime", "uuid": "UUID",
292 unitfields = ["be/memory", "oper_ram", "sd(a|b)_size", "disk\.size/.*"]
293 numfields = ["be/memory", "oper_ram", "sd(a|b)_size", "be/vcpus",
294 "serial_no", "(disk|nic)\.count", "disk\.size/.*"]
296 list_type_fields = ("tags", "disk.sizes", "nic.macs", "nic.ips",
297 "nic.modes", "nic.links", "nic.bridges")
298 # change raw values to nicer strings
300 for idx, field in enumerate(selected_fields):
302 if field == "snodes":
303 val = ",".join(val) or "-"
304 elif field == "admin_state":
309 elif field == "oper_state":
316 elif field == "oper_ram":
319 elif field == "sda_size" or field == "sdb_size":
322 elif field == "ctime" or field == "mtime":
323 val = utils.FormatTime(val)
324 elif field in list_type_fields:
325 val = ",".join(str(item) for item in val)
328 if opts.roman_integers and isinstance(val, int):
329 val = compat.TryToRoman(val)
332 data = GenerateTable(separator=opts.separator, headers=headers,
333 fields=selected_fields, unitfields=unitfields,
334 numfields=numfields, data=output, units=opts.units)
342 def AddInstance(opts, args):
343 """Add an instance to the cluster.
345 This is just a wrapper over GenericInstanceCreate.
348 return GenericInstanceCreate(constants.INSTANCE_CREATE, opts, args)
351 def BatchCreate(opts, args):
352 """Create instances using a definition file.
354 This function reads a json file with instances defined
358 "disk_size": [20480],
364 "primary_node": "firstnode",
365 "secondary_node": "secondnode",
366 "iallocator": "dumb"}
369 Note that I{primary_node} and I{secondary_node} have precedence over
372 @param opts: the command line options selected by the user
374 @param args: should contain one element, the json filename
376 @return: the desired exit code
379 _DEFAULT_SPECS = {"disk_size": [20 * 1024],
382 "primary_node": None,
383 "secondary_node": None,
390 "file_storage_dir": None,
391 "force_variant": False,
392 "file_driver": 'loop'}
394 def _PopulateWithDefaults(spec):
395 """Returns a new hash combined with default values."""
396 mydict = _DEFAULT_SPECS.copy()
401 """Validate the instance specs."""
402 # Validate fields required under any circumstances
403 for required_field in ('os', 'template'):
404 if required_field not in spec:
405 raise errors.OpPrereqError('Required field "%s" is missing.' %
406 required_field, errors.ECODE_INVAL)
407 # Validate special fields
408 if spec['primary_node'] is not None:
409 if (spec['template'] in constants.DTS_NET_MIRROR and
410 spec['secondary_node'] is None):
411 raise errors.OpPrereqError('Template requires secondary node, but'
412 ' there was no secondary provided.',
414 elif spec['iallocator'] is None:
415 raise errors.OpPrereqError('You have to provide at least a primary_node'
416 ' or an iallocator.',
419 if (spec['hvparams'] and
420 not isinstance(spec['hvparams'], dict)):
421 raise errors.OpPrereqError('Hypervisor parameters must be a dict.',
424 json_filename = args[0]
426 instance_data = simplejson.loads(utils.ReadFile(json_filename))
427 except Exception, err: # pylint: disable-msg=W0703
428 ToStderr("Can't parse the instance definition file: %s" % str(err))
431 if not isinstance(instance_data, dict):
432 ToStderr("The instance definition file is not in dict format.")
435 jex = JobExecutor(opts=opts)
437 # Iterate over the instances and do:
438 # * Populate the specs with default value
439 # * Validate the instance specs
440 i_names = utils.NiceSort(instance_data.keys()) # pylint: disable-msg=E1103
442 specs = instance_data[name]
443 specs = _PopulateWithDefaults(specs)
446 hypervisor = specs['hypervisor']
447 hvparams = specs['hvparams']
450 for elem in specs['disk_size']:
452 size = utils.ParseUnit(elem)
453 except (TypeError, ValueError), err:
454 raise errors.OpPrereqError("Invalid disk size '%s' for"
456 (elem, name, err), errors.ECODE_INVAL)
457 disks.append({"size": size})
459 utils.ForceDictType(specs['backend'], constants.BES_PARAMETER_TYPES)
460 utils.ForceDictType(hvparams, constants.HVS_PARAMETER_TYPES)
463 for field in ('ip', 'mac', 'mode', 'link', 'bridge'):
467 tmp_nics[0][field] = specs[field]
469 if specs['nics'] is not None and tmp_nics:
470 raise errors.OpPrereqError("'nics' list incompatible with using"
471 " individual nic fields as well",
473 elif specs['nics'] is not None:
474 tmp_nics = specs['nics']
478 op = opcodes.OpCreateInstance(instance_name=name,
480 disk_template=specs['template'],
481 mode=constants.INSTANCE_CREATE,
483 force_variant=specs["force_variant"],
484 pnode=specs['primary_node'],
485 snode=specs['secondary_node'],
487 start=specs['start'],
488 ip_check=specs['ip_check'],
489 name_check=specs['name_check'],
491 iallocator=specs['iallocator'],
492 hypervisor=hypervisor,
494 beparams=specs['backend'],
495 file_storage_dir=specs['file_storage_dir'],
496 file_driver=specs['file_driver'])
498 jex.QueueJob(name, op)
499 # we never want to wait, just show the submitted job IDs
500 jex.WaitOrShow(False)
505 def ReinstallInstance(opts, args):
506 """Reinstall an instance.
508 @param opts: the command line options selected by the user
510 @param args: should contain only one element, the name of the
511 instance to be reinstalled
513 @return: the desired exit code
516 # first, compute the desired name list
517 if opts.multi_mode is None:
518 opts.multi_mode = _SHUTDOWN_INSTANCES
520 inames = _ExpandMultiNames(opts.multi_mode, args)
522 raise errors.OpPrereqError("Selection filter does not match any instances",
525 # second, if requested, ask for an OS
526 if opts.select_os is True:
527 op = opcodes.OpDiagnoseOS(output_fields=["name", "valid", "variants"],
529 result = SubmitOpCode(op, opts=opts)
532 ToStdout("Can't get the OS list")
535 ToStdout("Available OS templates:")
538 for (name, valid, variants) in result:
540 for entry in CalculateOSNames(name, variants):
541 ToStdout("%3s: %s", number, entry)
542 choices.append(("%s" % number, entry, entry))
545 choices.append(('x', 'exit', 'Exit gnt-instance reinstall'))
546 selected = AskUser("Enter OS template number (or x to abort):",
549 if selected == 'exit':
550 ToStderr("User aborted reinstall, exiting")
557 # third, get confirmation: multi-reinstall requires --force-multi
558 # *and* --force, single-reinstall just --force
559 multi_on = opts.multi_mode != _SHUTDOWN_INSTANCES or len(inames) > 1
561 warn_msg = "Note: this will remove *all* data for the below instances!\n"
562 if not ((opts.force_multi and opts.force) or
563 _ConfirmOperation(inames, "reinstall", extra=warn_msg)):
567 usertext = ("This will reinstall the instance %s and remove"
568 " all data. Continue?") % inames[0]
569 if not AskUser(usertext):
572 jex = JobExecutor(verbose=multi_on, opts=opts)
573 for instance_name in inames:
574 op = opcodes.OpReinstallInstance(instance_name=instance_name,
576 force_variant=opts.force_variant)
577 jex.QueueJob(instance_name, op)
579 jex.WaitOrShow(not opts.submit_only)
583 def RemoveInstance(opts, args):
584 """Remove an instance.
586 @param opts: the command line options selected by the user
588 @param args: should contain only one element, the name of
589 the instance to be removed
591 @return: the desired exit code
594 instance_name = args[0]
599 _EnsureInstancesExist(cl, [instance_name])
601 usertext = ("This will remove the volumes of the instance %s"
602 " (including mirrors), thus removing all the data"
603 " of the instance. Continue?") % instance_name
604 if not AskUser(usertext):
607 op = opcodes.OpRemoveInstance(instance_name=instance_name,
608 ignore_failures=opts.ignore_failures,
609 shutdown_timeout=opts.shutdown_timeout)
610 SubmitOrSend(op, opts, cl=cl)
614 def RenameInstance(opts, args):
615 """Rename an instance.
617 @param opts: the command line options selected by the user
619 @param args: should contain two elements, the old and the
622 @return: the desired exit code
625 if not opts.name_check:
626 if not AskUser("As you disabled the check of the DNS entry, please verify"
627 " that '%s' is a FQDN. Continue?" % args[1]):
630 op = opcodes.OpRenameInstance(instance_name=args[0],
632 ignore_ip=not opts.ip_check,
633 check_name=opts.name_check)
634 SubmitOrSend(op, opts)
638 def ActivateDisks(opts, args):
639 """Activate an instance's disks.
641 This serves two purposes:
642 - it allows (as long as the instance is not running)
643 mounting the disks and modifying them from the node
644 - it repairs inactive secondary drbds
646 @param opts: the command line options selected by the user
648 @param args: should contain only one element, the instance name
650 @return: the desired exit code
653 instance_name = args[0]
654 op = opcodes.OpActivateInstanceDisks(instance_name=instance_name,
655 ignore_size=opts.ignore_size)
656 disks_info = SubmitOrSend(op, opts)
657 for host, iname, nname in disks_info:
658 ToStdout("%s:%s:%s", host, iname, nname)
662 def DeactivateDisks(opts, args):
663 """Deactivate an instance's disks.
665 This function takes the instance name, looks for its primary node
666 and the tries to shutdown its block devices on that node.
668 @param opts: the command line options selected by the user
670 @param args: should contain only one element, the instance name
672 @return: the desired exit code
675 instance_name = args[0]
676 op = opcodes.OpDeactivateInstanceDisks(instance_name=instance_name)
677 SubmitOrSend(op, opts)
681 def RecreateDisks(opts, args):
682 """Recreate an instance's disks.
684 @param opts: the command line options selected by the user
686 @param args: should contain only one element, the instance name
688 @return: the desired exit code
691 instance_name = args[0]
694 opts.disks = [int(v) for v in opts.disks.split(",")]
695 except (ValueError, TypeError), err:
696 ToStderr("Invalid disks value: %s" % str(err))
701 op = opcodes.OpRecreateInstanceDisks(instance_name=instance_name,
703 SubmitOrSend(op, opts)
707 def GrowDisk(opts, args):
708 """Grow an instance's disks.
710 @param opts: the command line options selected by the user
712 @param args: should contain two elements, the instance name
713 whose disks we grow and the disk name, e.g. I{sda}
715 @return: the desired exit code
722 except (TypeError, ValueError), err:
723 raise errors.OpPrereqError("Invalid disk index: %s" % str(err),
725 amount = utils.ParseUnit(args[2])
726 op = opcodes.OpGrowDisk(instance_name=instance, disk=disk, amount=amount,
727 wait_for_sync=opts.wait_for_sync)
728 SubmitOrSend(op, opts)
732 def _StartupInstance(name, opts):
733 """Startup instances.
735 This returns the opcode to start an instance, and its decorator will
736 wrap this into a loop starting all desired instances.
738 @param name: the name of the instance to act on
739 @param opts: the command line options selected by the user
740 @return: the opcode needed for the operation
743 op = opcodes.OpStartupInstance(instance_name=name,
745 # do not add these parameters to the opcode unless they're defined
747 op.hvparams = opts.hvparams
749 op.beparams = opts.beparams
753 def _RebootInstance(name, opts):
754 """Reboot instance(s).
756 This returns the opcode to reboot an instance, and its decorator
757 will wrap this into a loop rebooting all desired instances.
759 @param name: the name of the instance to act on
760 @param opts: the command line options selected by the user
761 @return: the opcode needed for the operation
764 return opcodes.OpRebootInstance(instance_name=name,
765 reboot_type=opts.reboot_type,
766 ignore_secondaries=opts.ignore_secondaries,
767 shutdown_timeout=opts.shutdown_timeout)
770 def _ShutdownInstance(name, opts):
771 """Shutdown an instance.
773 This returns the opcode to shutdown an instance, and its decorator
774 will wrap this into a loop shutting down all desired instances.
776 @param name: the name of the instance to act on
777 @param opts: the command line options selected by the user
778 @return: the opcode needed for the operation
781 return opcodes.OpShutdownInstance(instance_name=name,
782 timeout=opts.timeout)
785 def ReplaceDisks(opts, args):
786 """Replace the disks of an instance
788 @param opts: the command line options selected by the user
790 @param args: should contain only one element, the instance name
792 @return: the desired exit code
795 new_2ndary = opts.dst_node
796 iallocator = opts.iallocator
797 if opts.disks is None:
801 disks = [int(i) for i in opts.disks.split(",")]
802 except (TypeError, ValueError), err:
803 raise errors.OpPrereqError("Invalid disk index passed: %s" % str(err),
805 cnt = [opts.on_primary, opts.on_secondary, opts.auto,
806 new_2ndary is not None, iallocator is not None].count(True)
808 raise errors.OpPrereqError("One and only one of the -p, -s, -a, -n and -i"
809 " options must be passed", errors.ECODE_INVAL)
810 elif opts.on_primary:
811 mode = constants.REPLACE_DISK_PRI
812 elif opts.on_secondary:
813 mode = constants.REPLACE_DISK_SEC
815 mode = constants.REPLACE_DISK_AUTO
817 raise errors.OpPrereqError("Cannot specify disks when using automatic"
818 " mode", errors.ECODE_INVAL)
819 elif new_2ndary is not None or iallocator is not None:
821 mode = constants.REPLACE_DISK_CHG
823 op = opcodes.OpReplaceDisks(instance_name=args[0], disks=disks,
824 remote_node=new_2ndary, mode=mode,
825 iallocator=iallocator,
826 early_release=opts.early_release)
827 SubmitOrSend(op, opts)
831 def FailoverInstance(opts, args):
832 """Failover an instance.
834 The failover is done by shutting it down on its present node and
835 starting it on the secondary.
837 @param opts: the command line options selected by the user
839 @param args: should contain only one element, the instance name
841 @return: the desired exit code
845 instance_name = args[0]
849 _EnsureInstancesExist(cl, [instance_name])
851 usertext = ("Failover will happen to image %s."
852 " This requires a shutdown of the instance. Continue?" %
854 if not AskUser(usertext):
857 op = opcodes.OpFailoverInstance(instance_name=instance_name,
858 ignore_consistency=opts.ignore_consistency,
859 shutdown_timeout=opts.shutdown_timeout)
860 SubmitOrSend(op, opts, cl=cl)
864 def MigrateInstance(opts, args):
865 """Migrate an instance.
867 The migrate is done without shutdown.
869 @param opts: the command line options selected by the user
871 @param args: should contain only one element, the instance name
873 @return: the desired exit code
877 instance_name = args[0]
881 _EnsureInstancesExist(cl, [instance_name])
884 usertext = ("Instance %s will be recovered from a failed migration."
885 " Note that the migration procedure (including cleanup)" %
888 usertext = ("Instance %s will be migrated. Note that migration" %
890 usertext += (" might impact the instance if anything goes wrong"
891 " (e.g. due to bugs in the hypervisor). Continue?")
892 if not AskUser(usertext):
895 op = opcodes.OpMigrateInstance(instance_name=instance_name, live=opts.live,
896 cleanup=opts.cleanup)
897 SubmitOpCode(op, cl=cl, opts=opts)
901 def MoveInstance(opts, args):
904 @param opts: the command line options selected by the user
906 @param args: should contain only one element, the instance name
908 @return: the desired exit code
912 instance_name = args[0]
916 usertext = ("Instance %s will be moved."
917 " This requires a shutdown of the instance. Continue?" %
919 if not AskUser(usertext):
922 op = opcodes.OpMoveInstance(instance_name=instance_name,
923 target_node=opts.node,
924 shutdown_timeout=opts.shutdown_timeout)
925 SubmitOrSend(op, opts, cl=cl)
929 def ConnectToInstanceConsole(opts, args):
930 """Connect to the console of an instance.
932 @param opts: the command line options selected by the user
934 @param args: should contain only one element, the instance name
936 @return: the desired exit code
939 instance_name = args[0]
941 op = opcodes.OpConnectConsole(instance_name=instance_name)
942 cmd = SubmitOpCode(op, opts=opts)
944 if opts.show_command:
945 ToStdout("%s", utils.ShellQuoteArgs(cmd))
948 os.execvp(cmd[0], cmd)
950 ToStderr("Can't run console command %s with arguments:\n'%s'",
951 cmd[0], " ".join(cmd))
952 os._exit(1) # pylint: disable-msg=W0212
955 def _FormatLogicalID(dev_type, logical_id, roman):
956 """Formats the logical_id of a disk.
959 if dev_type == constants.LD_DRBD8:
960 node_a, node_b, port, minor_a, minor_b, key = logical_id
962 ("nodeA", "%s, minor=%s" % (node_a, compat.TryToRoman(minor_a,
964 ("nodeB", "%s, minor=%s" % (node_b, compat.TryToRoman(minor_b,
966 ("port", compat.TryToRoman(port, convert=roman)),
969 elif dev_type == constants.LD_LV:
970 vg_name, lv_name = logical_id
971 data = ["%s/%s" % (vg_name, lv_name)]
973 data = [str(logical_id)]
978 def _FormatBlockDevInfo(idx, top_level, dev, static, roman):
979 """Show block device information.
981 This is only used by L{ShowInstanceConfig}, but it's too big to be
982 left for an inline definition.
985 @param idx: the index of the current disk
986 @type top_level: boolean
987 @param top_level: if this a top-level disk?
989 @param dev: dictionary with disk information
990 @type static: boolean
991 @param static: wheter the device information doesn't contain
992 runtime information but only static data
994 @param roman: whether to try to use roman integers
995 @return: a list of either strings, tuples or lists
996 (which should be formatted at a higher indent level)
999 def helper(dtype, status):
1000 """Format one line for physical device status.
1003 @param dtype: a constant from the L{constants.LDS_BLOCK} set
1005 @param status: a tuple as returned from L{backend.FindBlockDevice}
1006 @return: the string representing the status
1012 (path, major, minor, syncp, estt, degr, ldisk_status) = status
1014 major_string = "N/A"
1016 major_string = str(compat.TryToRoman(major, convert=roman))
1019 minor_string = "N/A"
1021 minor_string = str(compat.TryToRoman(minor, convert=roman))
1023 txt += ("%s (%s:%s)" % (path, major_string, minor_string))
1024 if dtype in (constants.LD_DRBD8, ):
1025 if syncp is not None:
1026 sync_text = "*RECOVERING* %5.2f%%," % syncp
1028 sync_text += " ETA %ss" % compat.TryToRoman(estt, convert=roman)
1030 sync_text += " ETA unknown"
1032 sync_text = "in sync"
1034 degr_text = "*DEGRADED*"
1037 if ldisk_status == constants.LDS_FAULTY:
1038 ldisk_text = " *MISSING DISK*"
1039 elif ldisk_status == constants.LDS_UNKNOWN:
1040 ldisk_text = " *UNCERTAIN STATE*"
1043 txt += (" %s, status %s%s" % (sync_text, degr_text, ldisk_text))
1044 elif dtype == constants.LD_LV:
1045 if ldisk_status == constants.LDS_FAULTY:
1046 ldisk_text = " *FAILED* (failed drive?)"
1054 if dev["iv_name"] is not None:
1055 txt = dev["iv_name"]
1057 txt = "disk %s" % compat.TryToRoman(idx, convert=roman)
1059 txt = "child %s" % compat.TryToRoman(idx, convert=roman)
1060 if isinstance(dev["size"], int):
1061 nice_size = utils.FormatUnit(dev["size"], "h")
1063 nice_size = dev["size"]
1064 d1 = ["- %s: %s, size %s" % (txt, dev["dev_type"], nice_size)]
1067 data.append(("access mode", dev["mode"]))
1068 if dev["logical_id"] is not None:
1070 l_id = _FormatLogicalID(dev["dev_type"], dev["logical_id"], roman)
1072 l_id = [str(dev["logical_id"])]
1074 data.append(("logical_id", l_id[0]))
1077 elif dev["physical_id"] is not None:
1078 data.append("physical_id:")
1079 data.append([dev["physical_id"]])
1081 data.append(("on primary", helper(dev["dev_type"], dev["pstatus"])))
1082 if dev["sstatus"] and not static:
1083 data.append(("on secondary", helper(dev["dev_type"], dev["sstatus"])))
1086 data.append("child devices:")
1087 for c_idx, child in enumerate(dev["children"]):
1088 data.append(_FormatBlockDevInfo(c_idx, False, child, static, roman))
1093 def _FormatList(buf, data, indent_level):
1094 """Formats a list of data at a given indent level.
1096 If the element of the list is:
1097 - a string, it is simply formatted as is
1098 - a tuple, it will be split into key, value and the all the
1099 values in a list will be aligned all at the same start column
1100 - a list, will be recursively formatted
1103 @param buf: the buffer into which we write the output
1104 @param data: the list to format
1105 @type indent_level: int
1106 @param indent_level: the indent level to format at
1109 max_tlen = max([len(elem[0]) for elem in data
1110 if isinstance(elem, tuple)] or [0])
1112 if isinstance(elem, basestring):
1113 buf.write("%*s%s\n" % (2*indent_level, "", elem))
1114 elif isinstance(elem, tuple):
1116 spacer = "%*s" % (max_tlen - len(key), "")
1117 buf.write("%*s%s:%s %s\n" % (2*indent_level, "", key, spacer, value))
1118 elif isinstance(elem, list):
1119 _FormatList(buf, elem, indent_level+1)
1122 def _FormatParameterDict(buf, per_inst, actual):
1123 """Formats a parameter dictionary.
1125 @type buf: L{StringIO}
1126 @param buf: the buffer into which to write
1127 @type per_inst: dict
1128 @param per_inst: the instance's own parameters
1130 @param actual: the current parameter set (including defaults)
1133 for key in sorted(actual):
1134 val = per_inst.get(key, "default (%s)" % actual[key])
1135 buf.write(" - %s: %s\n" % (key, val))
1137 def ShowInstanceConfig(opts, args):
1138 """Compute instance run-time status.
1140 @param opts: the command line options selected by the user
1142 @param args: either an empty list, and then we query all
1143 instances, or should contain a list of instance names
1145 @return: the desired exit code
1148 if not args and not opts.show_all:
1149 ToStderr("No instance selected."
1150 " Please pass in --all if you want to query all instances.\n"
1151 "Note that this can take a long time on a big cluster.")
1153 elif args and opts.show_all:
1154 ToStderr("Cannot use --all if you specify instance names.")
1158 op = opcodes.OpQueryInstanceData(instances=args, static=opts.static)
1159 result = SubmitOpCode(op, opts=opts)
1161 ToStdout("No instances.")
1166 for instance_name in result:
1167 instance = result[instance_name]
1168 buf.write("Instance name: %s\n" % instance["name"])
1169 buf.write("UUID: %s\n" % instance["uuid"])
1170 buf.write("Serial number: %s\n" %
1171 compat.TryToRoman(instance["serial_no"],
1172 convert=opts.roman_integers))
1173 buf.write("Creation time: %s\n" % utils.FormatTime(instance["ctime"]))
1174 buf.write("Modification time: %s\n" % utils.FormatTime(instance["mtime"]))
1175 buf.write("State: configured to be %s" % instance["config_state"])
1177 buf.write(", actual state is %s" % instance["run_state"])
1179 ##buf.write("Considered for memory checks in cluster verify: %s\n" %
1180 ## instance["auto_balance"])
1181 buf.write(" Nodes:\n")
1182 buf.write(" - primary: %s\n" % instance["pnode"])
1183 buf.write(" - secondaries: %s\n" % utils.CommaJoin(instance["snodes"]))
1184 buf.write(" Operating system: %s\n" % instance["os"])
1185 _FormatParameterDict(buf, instance["os_instance"], instance["os_actual"])
1186 if instance.has_key("network_port"):
1187 buf.write(" Allocated network port: %s\n" %
1188 compat.TryToRoman(instance["network_port"],
1189 convert=opts.roman_integers))
1190 buf.write(" Hypervisor: %s\n" % instance["hypervisor"])
1192 # custom VNC console information
1193 vnc_bind_address = instance["hv_actual"].get(constants.HV_VNC_BIND_ADDRESS,
1195 if vnc_bind_address:
1196 port = instance["network_port"]
1197 display = int(port) - constants.VNC_BASE_PORT
1198 if display > 0 and vnc_bind_address == constants.IP4_ADDRESS_ANY:
1199 vnc_console_port = "%s:%s (display %s)" % (instance["pnode"],
1202 elif display > 0 and utils.IsValidIP4(vnc_bind_address):
1203 vnc_console_port = ("%s:%s (node %s) (display %s)" %
1204 (vnc_bind_address, port,
1205 instance["pnode"], display))
1207 # vnc bind address is a file
1208 vnc_console_port = "%s:%s" % (instance["pnode"],
1210 buf.write(" - console connection: vnc to %s\n" % vnc_console_port)
1212 _FormatParameterDict(buf, instance["hv_instance"], instance["hv_actual"])
1213 buf.write(" Hardware:\n")
1214 buf.write(" - VCPUs: %s\n" %
1215 compat.TryToRoman(instance["be_actual"][constants.BE_VCPUS],
1216 convert=opts.roman_integers))
1217 buf.write(" - memory: %sMiB\n" %
1218 compat.TryToRoman(instance["be_actual"][constants.BE_MEMORY],
1219 convert=opts.roman_integers))
1220 buf.write(" - NICs:\n")
1221 for idx, (ip, mac, mode, link) in enumerate(instance["nics"]):
1222 buf.write(" - nic/%d: MAC: %s, IP: %s, mode: %s, link: %s\n" %
1223 (idx, mac, ip, mode, link))
1224 buf.write(" Disks:\n")
1226 for idx, device in enumerate(instance["disks"]):
1227 _FormatList(buf, _FormatBlockDevInfo(idx, True, device, opts.static,
1228 opts.roman_integers), 2)
1230 ToStdout(buf.getvalue().rstrip('\n'))
1234 def SetInstanceParams(opts, args):
1235 """Modifies an instance.
1237 All parameters take effect only at the next restart of the instance.
1239 @param opts: the command line options selected by the user
1241 @param args: should contain only one element, the instance name
1243 @return: the desired exit code
1246 if not (opts.nics or opts.disks or opts.disk_template or
1247 opts.hvparams or opts.beparams or opts.os or opts.osparams):
1248 ToStderr("Please give at least one of the parameters.")
1251 for param in opts.beparams:
1252 if isinstance(opts.beparams[param], basestring):
1253 if opts.beparams[param].lower() == "default":
1254 opts.beparams[param] = constants.VALUE_DEFAULT
1256 utils.ForceDictType(opts.beparams, constants.BES_PARAMETER_TYPES,
1257 allowed_values=[constants.VALUE_DEFAULT])
1259 for param in opts.hvparams:
1260 if isinstance(opts.hvparams[param], basestring):
1261 if opts.hvparams[param].lower() == "default":
1262 opts.hvparams[param] = constants.VALUE_DEFAULT
1264 utils.ForceDictType(opts.hvparams, constants.HVS_PARAMETER_TYPES,
1265 allowed_values=[constants.VALUE_DEFAULT])
1267 for idx, (nic_op, nic_dict) in enumerate(opts.nics):
1269 nic_op = int(nic_op)
1270 opts.nics[idx] = (nic_op, nic_dict)
1271 except (TypeError, ValueError):
1274 for idx, (disk_op, disk_dict) in enumerate(opts.disks):
1276 disk_op = int(disk_op)
1277 opts.disks[idx] = (disk_op, disk_dict)
1278 except (TypeError, ValueError):
1280 if disk_op == constants.DDM_ADD:
1281 if 'size' not in disk_dict:
1282 raise errors.OpPrereqError("Missing required parameter 'size'",
1284 disk_dict['size'] = utils.ParseUnit(disk_dict['size'])
1286 if (opts.disk_template and
1287 opts.disk_template in constants.DTS_NET_MIRROR and
1289 ToStderr("Changing the disk template to a mirrored one requires"
1290 " specifying a secondary node")
1293 op = opcodes.OpSetInstanceParams(instance_name=args[0],
1296 disk_template=opts.disk_template,
1297 remote_node=opts.node,
1298 hvparams=opts.hvparams,
1299 beparams=opts.beparams,
1301 osparams=opts.osparams,
1302 force_variant=opts.force_variant,
1305 # even if here we process the result, we allow submit only
1306 result = SubmitOrSend(op, opts)
1309 ToStdout("Modified instance %s", args[0])
1310 for param, data in result:
1311 ToStdout(" - %-5s -> %s", param, data)
1312 ToStdout("Please don't forget that most parameters take effect"
1313 " only at the next start of the instance.")
1317 # multi-instance selection options
1318 m_force_multi = cli_option("--force-multiple", dest="force_multi",
1319 help="Do not ask for confirmation when more than"
1320 " one instance is affected",
1321 action="store_true", default=False)
1323 m_pri_node_opt = cli_option("--primary", dest="multi_mode",
1324 help="Filter by nodes (primary only)",
1325 const=_SHUTDOWN_NODES_PRI, action="store_const")
1327 m_sec_node_opt = cli_option("--secondary", dest="multi_mode",
1328 help="Filter by nodes (secondary only)",
1329 const=_SHUTDOWN_NODES_SEC, action="store_const")
1331 m_node_opt = cli_option("--node", dest="multi_mode",
1332 help="Filter by nodes (primary and secondary)",
1333 const=_SHUTDOWN_NODES_BOTH, action="store_const")
1335 m_clust_opt = cli_option("--all", dest="multi_mode",
1336 help="Select all instances in the cluster",
1337 const=_SHUTDOWN_CLUSTER, action="store_const")
1339 m_inst_opt = cli_option("--instance", dest="multi_mode",
1340 help="Filter by instance name [default]",
1341 const=_SHUTDOWN_INSTANCES, action="store_const")
1343 m_node_tags_opt = cli_option("--node-tags", dest="multi_mode",
1344 help="Filter by node tag",
1345 const=_SHUTDOWN_NODES_BOTH_BY_TAGS,
1346 action="store_const")
1348 m_pri_node_tags_opt = cli_option("--pri-node-tags", dest="multi_mode",
1349 help="Filter by primary node tag",
1350 const=_SHUTDOWN_NODES_PRI_BY_TAGS,
1351 action="store_const")
1353 m_sec_node_tags_opt = cli_option("--sec-node-tags", dest="multi_mode",
1354 help="Filter by secondary node tag",
1355 const=_SHUTDOWN_NODES_SEC_BY_TAGS,
1356 action="store_const")
1358 m_inst_tags_opt = cli_option("--tags", dest="multi_mode",
1359 help="Filter by instance tag",
1360 const=_SHUTDOWN_INSTANCES_BY_TAGS,
1361 action="store_const")
1363 # this is defined separately due to readability only
1369 FILESTORE_DRIVER_OPT,
1389 AddInstance, [ArgHost(min=1, max=1)], add_opts,
1390 "[...] -t disk-type -n node[:secondary-node] -o os-type <name>",
1391 "Creates and adds a new instance to the cluster"),
1393 BatchCreate, [ArgFile(min=1, max=1)], [],
1395 "Create a bunch of instances based on specs in the file."),
1397 ConnectToInstanceConsole, ARGS_ONE_INSTANCE,
1399 "[--show-cmd] <instance>", "Opens a console on the specified instance"),
1401 FailoverInstance, ARGS_ONE_INSTANCE,
1402 [FORCE_OPT, IGNORE_CONSIST_OPT, SUBMIT_OPT, SHUTDOWN_TIMEOUT_OPT],
1403 "[-f] <instance>", "Stops the instance and starts it on the backup node,"
1404 " using the remote mirror (only for instances of type drbd)"),
1406 MigrateInstance, ARGS_ONE_INSTANCE,
1407 [FORCE_OPT, NONLIVE_OPT, CLEANUP_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 "[-f] <instance>", "Move instance to an arbitrary node"
1414 " (only for instances of type file and lv)"),
1416 ShowInstanceConfig, ARGS_MANY_INSTANCES,
1417 [STATIC_OPT, ALL_OPT, ROMAN_OPT],
1418 "[-s] {--all | <instance>...}",
1419 "Show information on the specified instance(s)"),
1421 ListInstances, ARGS_MANY_INSTANCES,
1422 [NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT, SYNC_OPT, ROMAN_OPT],
1424 "Lists the instances and their status. The available fields are"
1425 " (see the man page for details): status, oper_state, oper_ram,"
1426 " name, os, pnode, snodes, admin_state, admin_ram, disk_template,"
1427 " ip, mac, nic_mode, nic_link, sda_size, sdb_size, vcpus, serial_no,"
1428 " nic.count, nic.mac/N, nic.ip/N, nic.mode/N, nic.link/N,"
1429 " nic.macs, nic.ips, nic.modes, nic.links,"
1430 " disk.count, disk.size/N, disk.sizes,"
1431 " hv/NAME, be/memory, be/vcpus, be/auto_balance,"
1433 " The default field"
1434 " list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS),
1437 ReinstallInstance, [ArgInstance()],
1438 [FORCE_OPT, OS_OPT, FORCE_VARIANT_OPT, m_force_multi, m_node_opt,
1439 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, m_node_tags_opt,
1440 m_pri_node_tags_opt, m_sec_node_tags_opt, m_inst_tags_opt, SELECT_OS_OPT,
1442 "[-f] <instance>", "Reinstall a stopped instance"),
1444 RemoveInstance, ARGS_ONE_INSTANCE,
1445 [FORCE_OPT, SHUTDOWN_TIMEOUT_OPT, IGNORE_FAILURES_OPT, SUBMIT_OPT],
1446 "[-f] <instance>", "Shuts down the instance and removes it"),
1449 [ArgInstance(min=1, max=1), ArgHost(min=1, max=1)],
1450 [NOIPCHECK_OPT, NONAMECHECK_OPT, SUBMIT_OPT],
1451 "<instance> <new_name>", "Rename the instance"),
1453 ReplaceDisks, ARGS_ONE_INSTANCE,
1454 [AUTO_REPLACE_OPT, DISKIDX_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT,
1455 NEW_SECONDARY_OPT, ON_PRIMARY_OPT, ON_SECONDARY_OPT, SUBMIT_OPT],
1456 "[-s|-p|-n NODE|-I NAME] <instance>",
1457 "Replaces all disks for the instance"),
1459 SetInstanceParams, ARGS_ONE_INSTANCE,
1460 [BACKEND_OPT, DISK_OPT, FORCE_OPT, HVOPTS_OPT, NET_OPT, SUBMIT_OPT,
1461 DISK_TEMPLATE_OPT, SINGLE_NODE_OPT, OS_OPT, FORCE_VARIANT_OPT,
1463 "<instance>", "Alters the parameters of an instance"),
1465 GenericManyOps("shutdown", _ShutdownInstance), [ArgInstance()],
1466 [m_node_opt, m_pri_node_opt, m_sec_node_opt, m_clust_opt,
1467 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1468 m_inst_tags_opt, m_inst_opt, m_force_multi, TIMEOUT_OPT, SUBMIT_OPT],
1469 "<instance>", "Stops an instance"),
1471 GenericManyOps("startup", _StartupInstance), [ArgInstance()],
1472 [FORCE_OPT, m_force_multi, m_node_opt, m_pri_node_opt, m_sec_node_opt,
1473 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1474 m_inst_tags_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT, HVOPTS_OPT,
1476 "<instance>", "Starts an instance"),
1478 GenericManyOps("reboot", _RebootInstance), [ArgInstance()],
1479 [m_force_multi, REBOOT_TYPE_OPT, IGNORE_SECONDARIES_OPT, m_node_opt,
1480 m_pri_node_opt, m_sec_node_opt, m_clust_opt, m_inst_opt, SUBMIT_OPT,
1481 m_node_tags_opt, m_pri_node_tags_opt, m_sec_node_tags_opt,
1482 m_inst_tags_opt, SHUTDOWN_TIMEOUT_OPT],
1483 "<instance>", "Reboots an instance"),
1485 ActivateDisks, ARGS_ONE_INSTANCE, [SUBMIT_OPT, IGNORE_SIZE_OPT],
1486 "<instance>", "Activate an instance's disks"),
1487 'deactivate-disks': (
1488 DeactivateDisks, ARGS_ONE_INSTANCE, [SUBMIT_OPT],
1489 "<instance>", "Deactivate an instance's disks"),
1491 RecreateDisks, ARGS_ONE_INSTANCE, [SUBMIT_OPT, DISKIDX_OPT],
1492 "<instance>", "Recreate an instance's disks"),
1495 [ArgInstance(min=1, max=1), ArgUnknown(min=1, max=1),
1496 ArgUnknown(min=1, max=1)],
1497 [SUBMIT_OPT, NWSYNC_OPT],
1498 "<instance> <disk> <size>", "Grow an instance's disk"),
1500 ListTags, ARGS_ONE_INSTANCE, [],
1501 "<instance_name>", "List the tags of the given instance"),
1503 AddTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1505 "<instance_name> tag...", "Add tags to the given instance"),
1507 RemoveTags, [ArgInstance(min=1, max=1), ArgUnknown()],
1509 "<instance_name> tag...", "Remove tags from given instance"),
1512 #: dictionary with aliases for commands
1514 'activate_block_devs': 'activate-disks',
1515 'replace_disks': 'replace-disks',
1521 if __name__ == '__main__':
1522 sys.exit(GenericMain(commands, aliases=aliases,
1523 override={"tag_type": constants.TAG_INSTANCE}))