Do not add a new Inotify watchers on timer
[ganeti-github.git] / lib / client / gnt_cluster.py
1 #
2 #
3
4 # Copyright (C) 2006, 2007, 2010, 2011, 2012, 2013, 2014 Google Inc.
5 # All rights reserved.
6 #
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions are
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12 # this list of conditions and the following disclaimer.
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24 # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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29
30 """Cluster related commands"""
31
32 # pylint: disable=W0401,W0613,W0614,C0103
33 # W0401: Wildcard import ganeti.cli
34 # W0613: Unused argument, since all functions follow the same API
35 # W0614: Unused import %s from wildcard import (since we need cli)
36 # C0103: Invalid name gnt-cluster
37
38 from cStringIO import StringIO
39 import os
40 import time
41 import OpenSSL
42 import tempfile
43 import itertools
44
45 from ganeti.cli import *
46 from ganeti import bootstrap
47 from ganeti import compat
48 from ganeti import constants
49 from ganeti import config
50 from ganeti import errors
51 from ganeti import netutils
52 from ganeti import objects
53 from ganeti import opcodes
54 from ganeti import pathutils
55 from ganeti import qlang
56 from ganeti import serializer
57 from ganeti import ssconf
58 from ganeti import ssh
59 from ganeti import uidpool
60 from ganeti import utils
61 from ganeti.client import base
62
63
64 ON_OPT = cli_option("--on", default=False,
65 action="store_true", dest="on",
66 help="Recover from an EPO")
67
68 GROUPS_OPT = cli_option("--groups", default=False,
69 action="store_true", dest="groups",
70 help="Arguments are node groups instead of nodes")
71
72 FORCE_FAILOVER = cli_option("--yes-do-it", dest="yes_do_it",
73 help="Override interactive check for --no-voting",
74 default=False, action="store_true")
75
76 FORCE_DISTRIBUTION = cli_option("--yes-do-it", dest="yes_do_it",
77 help="Unconditionally distribute the"
78 " configuration, even if the queue"
79 " is drained",
80 default=False, action="store_true")
81
82 TO_OPT = cli_option("--to", default=None, type="string",
83 help="The Ganeti version to upgrade to")
84
85 RESUME_OPT = cli_option("--resume", default=False, action="store_true",
86 help="Resume any pending Ganeti upgrades")
87
88 DATA_COLLECTOR_INTERVAL_OPT = cli_option(
89 "--data-collector-interval", default={}, type="keyval",
90 help="Set collection intervals in seconds of data collectors.")
91
92 _EPO_PING_INTERVAL = 30 # 30 seconds between pings
93 _EPO_PING_TIMEOUT = 1 # 1 second
94 _EPO_REACHABLE_TIMEOUT = 15 * 60 # 15 minutes
95
96
97 def _InitEnabledDiskTemplates(opts):
98 """Initialize the list of enabled disk templates.
99
100 """
101 if opts.enabled_disk_templates:
102 return opts.enabled_disk_templates.split(",")
103 else:
104 return constants.DEFAULT_ENABLED_DISK_TEMPLATES
105
106
107 def _InitVgName(opts, enabled_disk_templates):
108 """Initialize the volume group name.
109
110 @type enabled_disk_templates: list of strings
111 @param enabled_disk_templates: cluster-wide enabled disk templates
112
113 """
114 vg_name = None
115 if opts.vg_name is not None:
116 vg_name = opts.vg_name
117 if vg_name:
118 if not utils.IsLvmEnabled(enabled_disk_templates):
119 ToStdout("You specified a volume group with --vg-name, but you did not"
120 " enable any disk template that uses lvm.")
121 elif utils.IsLvmEnabled(enabled_disk_templates):
122 raise errors.OpPrereqError(
123 "LVM disk templates are enabled, but vg name not set.")
124 elif utils.IsLvmEnabled(enabled_disk_templates):
125 vg_name = constants.DEFAULT_VG
126 return vg_name
127
128
129 def _InitDrbdHelper(opts, enabled_disk_templates, feedback_fn=ToStdout):
130 """Initialize the DRBD usermode helper.
131
132 """
133 drbd_enabled = constants.DT_DRBD8 in enabled_disk_templates
134
135 if not drbd_enabled and opts.drbd_helper is not None:
136 feedback_fn("Note: You specified a DRBD usermode helper, while DRBD storage"
137 " is not enabled.")
138
139 if drbd_enabled:
140 if opts.drbd_helper is None:
141 return constants.DEFAULT_DRBD_HELPER
142 if opts.drbd_helper == '':
143 raise errors.OpPrereqError(
144 "Unsetting the drbd usermode helper while enabling DRBD is not"
145 " allowed.")
146
147 return opts.drbd_helper
148
149
150 @UsesRPC
151 def InitCluster(opts, args):
152 """Initialize the cluster.
153
154 @param opts: the command line options selected by the user
155 @type args: list
156 @param args: should contain only one element, the desired
157 cluster name
158 @rtype: int
159 @return: the desired exit code
160
161 """
162 enabled_disk_templates = _InitEnabledDiskTemplates(opts)
163
164 try:
165 vg_name = _InitVgName(opts, enabled_disk_templates)
166 drbd_helper = _InitDrbdHelper(opts, enabled_disk_templates)
167 except errors.OpPrereqError, e:
168 ToStderr(str(e))
169 return 1
170
171 master_netdev = opts.master_netdev
172 if master_netdev is None:
173 nic_mode = opts.nicparams.get(constants.NIC_MODE, None)
174 if not nic_mode:
175 # default case, use bridging
176 master_netdev = constants.DEFAULT_BRIDGE
177 elif nic_mode == constants.NIC_MODE_OVS:
178 # default ovs is different from default bridge
179 master_netdev = constants.DEFAULT_OVS
180 opts.nicparams[constants.NIC_LINK] = constants.DEFAULT_OVS
181
182 hvlist = opts.enabled_hypervisors
183 if hvlist is None:
184 hvlist = constants.DEFAULT_ENABLED_HYPERVISOR
185 hvlist = hvlist.split(",")
186
187 hvparams = dict(opts.hvparams)
188 beparams = opts.beparams
189 nicparams = opts.nicparams
190
191 diskparams = dict(opts.diskparams)
192
193 # check the disk template types here, as we cannot rely on the type check done
194 # by the opcode parameter types
195 diskparams_keys = set(diskparams.keys())
196 if not (diskparams_keys <= constants.DISK_TEMPLATES):
197 unknown = utils.NiceSort(diskparams_keys - constants.DISK_TEMPLATES)
198 ToStderr("Disk templates unknown: %s" % utils.CommaJoin(unknown))
199 return 1
200
201 # prepare beparams dict
202 beparams = objects.FillDict(constants.BEC_DEFAULTS, beparams)
203 utils.ForceDictType(beparams, constants.BES_PARAMETER_COMPAT)
204
205 # prepare nicparams dict
206 nicparams = objects.FillDict(constants.NICC_DEFAULTS, nicparams)
207 utils.ForceDictType(nicparams, constants.NICS_PARAMETER_TYPES)
208
209 # prepare ndparams dict
210 if opts.ndparams is None:
211 ndparams = dict(constants.NDC_DEFAULTS)
212 else:
213 ndparams = objects.FillDict(constants.NDC_DEFAULTS, opts.ndparams)
214 utils.ForceDictType(ndparams, constants.NDS_PARAMETER_TYPES)
215
216 # prepare hvparams dict
217 for hv in constants.HYPER_TYPES:
218 if hv not in hvparams:
219 hvparams[hv] = {}
220 hvparams[hv] = objects.FillDict(constants.HVC_DEFAULTS[hv], hvparams[hv])
221 utils.ForceDictType(hvparams[hv], constants.HVS_PARAMETER_TYPES)
222
223 # prepare diskparams dict
224 for templ in constants.DISK_TEMPLATES:
225 if templ not in diskparams:
226 diskparams[templ] = {}
227 diskparams[templ] = objects.FillDict(constants.DISK_DT_DEFAULTS[templ],
228 diskparams[templ])
229 utils.ForceDictType(diskparams[templ], constants.DISK_DT_TYPES)
230
231 # prepare ipolicy dict
232 ipolicy = CreateIPolicyFromOpts(
233 ispecs_mem_size=opts.ispecs_mem_size,
234 ispecs_cpu_count=opts.ispecs_cpu_count,
235 ispecs_disk_count=opts.ispecs_disk_count,
236 ispecs_disk_size=opts.ispecs_disk_size,
237 ispecs_nic_count=opts.ispecs_nic_count,
238 minmax_ispecs=opts.ipolicy_bounds_specs,
239 std_ispecs=opts.ipolicy_std_specs,
240 ipolicy_disk_templates=opts.ipolicy_disk_templates,
241 ipolicy_vcpu_ratio=opts.ipolicy_vcpu_ratio,
242 ipolicy_spindle_ratio=opts.ipolicy_spindle_ratio,
243 fill_all=True)
244
245 if opts.candidate_pool_size is None:
246 opts.candidate_pool_size = constants.MASTER_POOL_SIZE_DEFAULT
247
248 if opts.mac_prefix is None:
249 opts.mac_prefix = constants.DEFAULT_MAC_PREFIX
250
251 uid_pool = opts.uid_pool
252 if uid_pool is not None:
253 uid_pool = uidpool.ParseUidPool(uid_pool)
254
255 if opts.prealloc_wipe_disks is None:
256 opts.prealloc_wipe_disks = False
257
258 external_ip_setup_script = opts.use_external_mip_script
259 if external_ip_setup_script is None:
260 external_ip_setup_script = False
261
262 try:
263 primary_ip_version = int(opts.primary_ip_version)
264 except (ValueError, TypeError), err:
265 ToStderr("Invalid primary ip version value: %s" % str(err))
266 return 1
267
268 master_netmask = opts.master_netmask
269 try:
270 if master_netmask is not None:
271 master_netmask = int(master_netmask)
272 except (ValueError, TypeError), err:
273 ToStderr("Invalid master netmask value: %s" % str(err))
274 return 1
275
276 if opts.disk_state:
277 disk_state = utils.FlatToDict(opts.disk_state)
278 else:
279 disk_state = {}
280
281 hv_state = dict(opts.hv_state)
282
283 if opts.install_image:
284 install_image = opts.install_image
285 else:
286 install_image = ""
287
288 if opts.zeroing_image:
289 zeroing_image = opts.zeroing_image
290 else:
291 zeroing_image = ""
292
293 compression_tools = _GetCompressionTools(opts)
294
295 default_ialloc_params = opts.default_iallocator_params
296
297 if opts.enabled_user_shutdown:
298 enabled_user_shutdown = True
299 else:
300 enabled_user_shutdown = False
301
302 bootstrap.InitCluster(cluster_name=args[0],
303 secondary_ip=opts.secondary_ip,
304 vg_name=vg_name,
305 mac_prefix=opts.mac_prefix,
306 master_netmask=master_netmask,
307 master_netdev=master_netdev,
308 file_storage_dir=opts.file_storage_dir,
309 shared_file_storage_dir=opts.shared_file_storage_dir,
310 gluster_storage_dir=opts.gluster_storage_dir,
311 enabled_hypervisors=hvlist,
312 hvparams=hvparams,
313 beparams=beparams,
314 nicparams=nicparams,
315 ndparams=ndparams,
316 diskparams=diskparams,
317 ipolicy=ipolicy,
318 candidate_pool_size=opts.candidate_pool_size,
319 modify_etc_hosts=opts.modify_etc_hosts,
320 modify_ssh_setup=opts.modify_ssh_setup,
321 maintain_node_health=opts.maintain_node_health,
322 drbd_helper=drbd_helper,
323 uid_pool=uid_pool,
324 default_iallocator=opts.default_iallocator,
325 default_iallocator_params=default_ialloc_params,
326 primary_ip_version=primary_ip_version,
327 prealloc_wipe_disks=opts.prealloc_wipe_disks,
328 use_external_mip_script=external_ip_setup_script,
329 hv_state=hv_state,
330 disk_state=disk_state,
331 enabled_disk_templates=enabled_disk_templates,
332 install_image=install_image,
333 zeroing_image=zeroing_image,
334 compression_tools=compression_tools,
335 enabled_user_shutdown=enabled_user_shutdown,
336 )
337 op = opcodes.OpClusterPostInit()
338 SubmitOpCode(op, opts=opts)
339 return 0
340
341
342 @UsesRPC
343 def DestroyCluster(opts, args):
344 """Destroy the cluster.
345
346 @param opts: the command line options selected by the user
347 @type args: list
348 @param args: should be an empty list
349 @rtype: int
350 @return: the desired exit code
351
352 """
353 if not opts.yes_do_it:
354 ToStderr("Destroying a cluster is irreversible. If you really want"
355 " destroy this cluster, supply the --yes-do-it option.")
356 return 1
357
358 op = opcodes.OpClusterDestroy()
359 master_uuid = SubmitOpCode(op, opts=opts)
360 # if we reached this, the opcode didn't fail; we can proceed to
361 # shutdown all the daemons
362 bootstrap.FinalizeClusterDestroy(master_uuid)
363 return 0
364
365
366 def RenameCluster(opts, args):
367 """Rename the cluster.
368
369 @param opts: the command line options selected by the user
370 @type args: list
371 @param args: should contain only one element, the new cluster name
372 @rtype: int
373 @return: the desired exit code
374
375 """
376 cl = GetClient()
377
378 (cluster_name, ) = cl.QueryConfigValues(["cluster_name"])
379
380 new_name = args[0]
381 if not opts.force:
382 usertext = ("This will rename the cluster from '%s' to '%s'. If you are"
383 " connected over the network to the cluster name, the"
384 " operation is very dangerous as the IP address will be"
385 " removed from the node and the change may not go through."
386 " Continue?") % (cluster_name, new_name)
387 if not AskUser(usertext):
388 return 1
389
390 op = opcodes.OpClusterRename(name=new_name)
391 result = SubmitOpCode(op, opts=opts, cl=cl)
392
393 if result:
394 ToStdout("Cluster renamed from '%s' to '%s'", cluster_name, result)
395
396 return 0
397
398
399 def ActivateMasterIp(opts, args):
400 """Activates the master IP.
401
402 """
403 op = opcodes.OpClusterActivateMasterIp()
404 SubmitOpCode(op)
405 return 0
406
407
408 def DeactivateMasterIp(opts, args):
409 """Deactivates the master IP.
410
411 """
412 if not opts.confirm:
413 usertext = ("This will disable the master IP. All the open connections to"
414 " the master IP will be closed. To reach the master you will"
415 " need to use its node IP."
416 " Continue?")
417 if not AskUser(usertext):
418 return 1
419
420 op = opcodes.OpClusterDeactivateMasterIp()
421 SubmitOpCode(op)
422 return 0
423
424
425 def RedistributeConfig(opts, args):
426 """Forces push of the cluster configuration.
427
428 @param opts: the command line options selected by the user
429 @type args: list
430 @param args: empty list
431 @rtype: int
432 @return: the desired exit code
433
434 """
435 op = opcodes.OpClusterRedistConf()
436 if opts.yes_do_it:
437 SubmitOpCodeToDrainedQueue(op)
438 else:
439 SubmitOrSend(op, opts)
440 return 0
441
442
443 def ShowClusterVersion(opts, args):
444 """Write version of ganeti software to the standard output.
445
446 @param opts: the command line options selected by the user
447 @type args: list
448 @param args: should be an empty list
449 @rtype: int
450 @return: the desired exit code
451
452 """
453 cl = GetClient()
454 result = cl.QueryClusterInfo()
455 ToStdout("Software version: %s", result["software_version"])
456 ToStdout("Internode protocol: %s", result["protocol_version"])
457 ToStdout("Configuration format: %s", result["config_version"])
458 ToStdout("OS api version: %s", result["os_api_version"])
459 ToStdout("Export interface: %s", result["export_version"])
460 ToStdout("VCS version: %s", result["vcs_version"])
461 return 0
462
463
464 def ShowClusterMaster(opts, args):
465 """Write name of master node to the standard output.
466
467 @param opts: the command line options selected by the user
468 @type args: list
469 @param args: should be an empty list
470 @rtype: int
471 @return: the desired exit code
472
473 """
474 master = bootstrap.GetMaster()
475 ToStdout(master)
476 return 0
477
478
479 def _FormatGroupedParams(paramsdict, roman=False):
480 """Format Grouped parameters (be, nic, disk) by group.
481
482 @type paramsdict: dict of dicts
483 @param paramsdict: {group: {param: value, ...}, ...}
484 @rtype: dict of dicts
485 @return: copy of the input dictionaries with strings as values
486
487 """
488 ret = {}
489 for (item, val) in paramsdict.items():
490 if isinstance(val, dict):
491 ret[item] = _FormatGroupedParams(val, roman=roman)
492 elif roman and isinstance(val, int):
493 ret[item] = compat.TryToRoman(val)
494 else:
495 ret[item] = str(val)
496 return ret
497
498
499 def _FormatDataCollectors(paramsdict):
500 """Format Grouped parameters (be, nic, disk) by group.
501
502 @type paramsdict: dict of dicts
503 @param paramsdict: response of QueryClusterInfo
504 @rtype: dict of dicts
505 @return: parameter grouped by data collector
506
507 """
508
509 enabled = paramsdict[constants.DATA_COLLECTORS_ENABLED_NAME]
510 interval = paramsdict[constants.DATA_COLLECTORS_INTERVAL_NAME]
511
512 ret = {}
513 for key in enabled:
514 ret[key] = dict(active=enabled[key],
515 interval="%.3fs" % (interval[key] / 1e6))
516 return ret
517
518
519 def ShowClusterConfig(opts, args):
520 """Shows cluster information.
521
522 @param opts: the command line options selected by the user
523 @type args: list
524 @param args: should be an empty list
525 @rtype: int
526 @return: the desired exit code
527
528 """
529 cl = GetClient()
530 result = cl.QueryClusterInfo()
531
532 if result["tags"]:
533 tags = utils.CommaJoin(utils.NiceSort(result["tags"]))
534 else:
535 tags = "(none)"
536 if result["reserved_lvs"]:
537 reserved_lvs = utils.CommaJoin(result["reserved_lvs"])
538 else:
539 reserved_lvs = "(none)"
540
541 enabled_hv = result["enabled_hypervisors"]
542 hvparams = dict((k, v) for k, v in result["hvparams"].iteritems()
543 if k in enabled_hv)
544
545 info = [
546 ("Cluster name", result["name"]),
547 ("Cluster UUID", result["uuid"]),
548
549 ("Creation time", utils.FormatTime(result["ctime"])),
550 ("Modification time", utils.FormatTime(result["mtime"])),
551
552 ("Master node", result["master"]),
553
554 ("Architecture (this node)",
555 "%s (%s)" % (result["architecture"][0], result["architecture"][1])),
556
557 ("Tags", tags),
558
559 ("Default hypervisor", result["default_hypervisor"]),
560 ("Enabled hypervisors", utils.CommaJoin(enabled_hv)),
561
562 ("Hypervisor parameters", _FormatGroupedParams(hvparams,
563 opts.roman_integers)),
564
565 ("OS-specific hypervisor parameters",
566 _FormatGroupedParams(result["os_hvp"], opts.roman_integers)),
567
568 ("OS parameters", _FormatGroupedParams(result["osparams"],
569 opts.roman_integers)),
570
571 ("Hidden OSes", utils.CommaJoin(result["hidden_os"])),
572 ("Blacklisted OSes", utils.CommaJoin(result["blacklisted_os"])),
573
574 ("Cluster parameters", [
575 ("candidate pool size",
576 compat.TryToRoman(result["candidate_pool_size"],
577 convert=opts.roman_integers)),
578 ("maximal number of jobs running simultaneously",
579 compat.TryToRoman(result["max_running_jobs"],
580 convert=opts.roman_integers)),
581 ("maximal number of jobs simultaneously tracked by the scheduler",
582 compat.TryToRoman(result["max_tracked_jobs"],
583 convert=opts.roman_integers)),
584 ("mac prefix", result["mac_prefix"]),
585 ("master netdev", result["master_netdev"]),
586 ("master netmask", compat.TryToRoman(result["master_netmask"],
587 opts.roman_integers)),
588 ("use external master IP address setup script",
589 result["use_external_mip_script"]),
590 ("lvm volume group", result["volume_group_name"]),
591 ("lvm reserved volumes", reserved_lvs),
592 ("drbd usermode helper", result["drbd_usermode_helper"]),
593 ("file storage path", result["file_storage_dir"]),
594 ("shared file storage path", result["shared_file_storage_dir"]),
595 ("gluster storage path", result["gluster_storage_dir"]),
596 ("maintenance of node health", result["maintain_node_health"]),
597 ("uid pool", uidpool.FormatUidPool(result["uid_pool"])),
598 ("default instance allocator", result["default_iallocator"]),
599 ("default instance allocator parameters",
600 result["default_iallocator_params"]),
601 ("primary ip version", compat.TryToRoman(result["primary_ip_version"],
602 opts.roman_integers)),
603 ("preallocation wipe disks", result["prealloc_wipe_disks"]),
604 ("OS search path", utils.CommaJoin(pathutils.OS_SEARCH_PATH)),
605 ("ExtStorage Providers search path",
606 utils.CommaJoin(pathutils.ES_SEARCH_PATH)),
607 ("enabled disk templates",
608 utils.CommaJoin(result["enabled_disk_templates"])),
609 ("install image", result["install_image"]),
610 ("instance communication network",
611 result["instance_communication_network"]),
612 ("zeroing image", result["zeroing_image"]),
613 ("compression tools", result["compression_tools"]),
614 ("enabled user shutdown", result["enabled_user_shutdown"]),
615 ]),
616
617 ("Default node parameters",
618 _FormatGroupedParams(result["ndparams"], roman=opts.roman_integers)),
619
620 ("Default instance parameters",
621 _FormatGroupedParams(result["beparams"], roman=opts.roman_integers)),
622
623 ("Default nic parameters",
624 _FormatGroupedParams(result["nicparams"], roman=opts.roman_integers)),
625
626 ("Default disk parameters",
627 _FormatGroupedParams(result["diskparams"], roman=opts.roman_integers)),
628
629 ("Instance policy - limits for instances",
630 FormatPolicyInfo(result["ipolicy"], None, True, opts.roman_integers)),
631 ("Data collectors", _FormatDataCollectors(result)),
632 ]
633
634 PrintGenericInfo(info)
635 return 0
636
637
638 def ClusterCopyFile(opts, args):
639 """Copy a file from master to some nodes.
640
641 @param opts: the command line options selected by the user
642 @type args: list
643 @param args: should contain only one element, the path of
644 the file to be copied
645 @rtype: int
646 @return: the desired exit code
647
648 """
649 filename = args[0]
650 filename = os.path.abspath(filename)
651
652 if not os.path.exists(filename):
653 raise errors.OpPrereqError("No such filename '%s'" % filename,
654 errors.ECODE_INVAL)
655
656 cl = GetClient()
657 qcl = GetClient()
658 try:
659 cluster_name = cl.QueryConfigValues(["cluster_name"])[0]
660
661 results = GetOnlineNodes(nodes=opts.nodes, cl=qcl, filter_master=True,
662 secondary_ips=opts.use_replication_network,
663 nodegroup=opts.nodegroup)
664 ports = GetNodesSshPorts(opts.nodes, qcl)
665 finally:
666 cl.Close()
667 qcl.Close()
668
669 srun = ssh.SshRunner(cluster_name)
670 for (node, port) in zip(results, ports):
671 if not srun.CopyFileToNode(node, port, filename):
672 ToStderr("Copy of file %s to node %s:%d failed", filename, node, port)
673
674 return 0
675
676
677 def RunClusterCommand(opts, args):
678 """Run a command on some nodes.
679
680 @param opts: the command line options selected by the user
681 @type args: list
682 @param args: should contain the command to be run and its arguments
683 @rtype: int
684 @return: the desired exit code
685
686 """
687 cl = GetClient()
688 qcl = GetClient()
689
690 command = " ".join(args)
691
692 nodes = GetOnlineNodes(nodes=opts.nodes, cl=qcl, nodegroup=opts.nodegroup)
693 ports = GetNodesSshPorts(nodes, qcl)
694
695 cluster_name, master_node = cl.QueryConfigValues(["cluster_name",
696 "master_node"])
697
698 srun = ssh.SshRunner(cluster_name=cluster_name)
699
700 # Make sure master node is at list end
701 if master_node in nodes:
702 nodes.remove(master_node)
703 nodes.append(master_node)
704
705 for (name, port) in zip(nodes, ports):
706 result = srun.Run(name, constants.SSH_LOGIN_USER, command, port=port)
707
708 if opts.failure_only and result.exit_code == constants.EXIT_SUCCESS:
709 # Do not output anything for successful commands
710 continue
711
712 ToStdout("------------------------------------------------")
713 if opts.show_machine_names:
714 for line in result.output.splitlines():
715 ToStdout("%s: %s", name, line)
716 else:
717 ToStdout("node: %s", name)
718 ToStdout("%s", result.output)
719 ToStdout("return code = %s", result.exit_code)
720
721 return 0
722
723
724 def VerifyCluster(opts, args):
725 """Verify integrity of cluster, performing various test on nodes.
726
727 @param opts: the command line options selected by the user
728 @type args: list
729 @param args: should be an empty list
730 @rtype: int
731 @return: the desired exit code
732
733 """
734 skip_checks = []
735
736 if opts.skip_nplusone_mem:
737 skip_checks.append(constants.VERIFY_NPLUSONE_MEM)
738
739 cl = GetClient()
740
741 op = opcodes.OpClusterVerify(verbose=opts.verbose,
742 error_codes=opts.error_codes,
743 debug_simulate_errors=opts.simulate_errors,
744 skip_checks=skip_checks,
745 ignore_errors=opts.ignore_errors,
746 group_name=opts.nodegroup,
747 verify_clutter=opts.verify_clutter)
748 result = SubmitOpCode(op, cl=cl, opts=opts)
749
750 # Keep track of submitted jobs
751 jex = JobExecutor(cl=cl, opts=opts)
752
753 for (status, job_id) in result[constants.JOB_IDS_KEY]:
754 jex.AddJobId(None, status, job_id)
755
756 results = jex.GetResults()
757
758 (bad_jobs, bad_results) = \
759 map(len,
760 # Convert iterators to lists
761 map(list,
762 # Count errors
763 map(compat.partial(itertools.ifilterfalse, bool),
764 # Convert result to booleans in a tuple
765 zip(*((job_success, len(op_results) == 1 and op_results[0])
766 for (job_success, op_results) in results)))))
767
768 if bad_jobs == 0 and bad_results == 0:
769 rcode = constants.EXIT_SUCCESS
770 else:
771 rcode = constants.EXIT_FAILURE
772 if bad_jobs > 0:
773 ToStdout("%s job(s) failed while verifying the cluster.", bad_jobs)
774
775 return rcode
776
777
778 def VerifyDisks(opts, args):
779 """Verify integrity of cluster disks.
780
781 @param opts: the command line options selected by the user
782 @type args: list
783 @param args: should be an empty list
784 @rtype: int
785 @return: the desired exit code
786
787 """
788 cl = GetClient()
789
790 op = opcodes.OpClusterVerifyDisks()
791
792 result = SubmitOpCode(op, cl=cl, opts=opts)
793
794 # Keep track of submitted jobs
795 jex = JobExecutor(cl=cl, opts=opts)
796
797 for (status, job_id) in result[constants.JOB_IDS_KEY]:
798 jex.AddJobId(None, status, job_id)
799
800 retcode = constants.EXIT_SUCCESS
801
802 for (status, result) in jex.GetResults():
803 if not status:
804 ToStdout("Job failed: %s", result)
805 continue
806
807 ((bad_nodes, instances, missing), ) = result
808
809 for node, text in bad_nodes.items():
810 ToStdout("Error gathering data on node %s: %s",
811 node, utils.SafeEncode(text[-400:]))
812 retcode = constants.EXIT_FAILURE
813 ToStdout("You need to fix these nodes first before fixing instances")
814
815 for iname in instances:
816 if iname in missing:
817 continue
818 op = opcodes.OpInstanceActivateDisks(instance_name=iname)
819 try:
820 ToStdout("Activating disks for instance '%s'", iname)
821 SubmitOpCode(op, opts=opts, cl=cl)
822 except errors.GenericError, err:
823 nret, msg = FormatError(err)
824 retcode |= nret
825 ToStderr("Error activating disks for instance %s: %s", iname, msg)
826
827 if missing:
828 for iname, ival in missing.iteritems():
829 all_missing = compat.all(x[0] in bad_nodes for x in ival)
830 if all_missing:
831 ToStdout("Instance %s cannot be verified as it lives on"
832 " broken nodes", iname)
833 else:
834 ToStdout("Instance %s has missing logical volumes:", iname)
835 ival.sort()
836 for node, vol in ival:
837 if node in bad_nodes:
838 ToStdout("\tbroken node %s /dev/%s", node, vol)
839 else:
840 ToStdout("\t%s /dev/%s", node, vol)
841
842 ToStdout("You need to replace or recreate disks for all the above"
843 " instances if this message persists after fixing broken nodes.")
844 retcode = constants.EXIT_FAILURE
845 elif not instances:
846 ToStdout("No disks need to be activated.")
847
848 return retcode
849
850
851 def RepairDiskSizes(opts, args):
852 """Verify sizes of cluster disks.
853
854 @param opts: the command line options selected by the user
855 @type args: list
856 @param args: optional list of instances to restrict check to
857 @rtype: int
858 @return: the desired exit code
859
860 """
861 op = opcodes.OpClusterRepairDiskSizes(instances=args)
862 SubmitOpCode(op, opts=opts)
863
864
865 @UsesRPC
866 def MasterFailover(opts, args):
867 """Failover the master node.
868
869 This command, when run on a non-master node, will cause the current
870 master to cease being master, and the non-master to become new
871 master.
872
873 @param opts: the command line options selected by the user
874 @type args: list
875 @param args: should be an empty list
876 @rtype: int
877 @return: the desired exit code
878
879 """
880 if not opts.no_voting:
881 # Verify that a majority of nodes is still healthy
882 if not bootstrap.MajorityHealthy():
883 ToStderr("Master-failover with voting is only possible if the majority"
884 " of nodes is still healthy; use the --no-voting option after"
885 " ensuring by other means that you won't end up in a dual-master"
886 " scenario.")
887 return 1
888 if opts.no_voting and not opts.yes_do_it:
889 usertext = ("This will perform the failover even if most other nodes"
890 " are down, or if this node is outdated. This is dangerous"
891 " as it can lead to a non-consistent cluster. Check the"
892 " gnt-cluster(8) man page before proceeding. Continue?")
893 if not AskUser(usertext):
894 return 1
895
896 rvlaue, msgs = bootstrap.MasterFailover(no_voting=opts.no_voting)
897 for msg in msgs:
898 ToStderr(msg)
899 return rvlaue
900
901
902 def MasterPing(opts, args):
903 """Checks if the master is alive.
904
905 @param opts: the command line options selected by the user
906 @type args: list
907 @param args: should be an empty list
908 @rtype: int
909 @return: the desired exit code
910
911 """
912 try:
913 cl = GetClient()
914 cl.QueryClusterInfo()
915 return 0
916 except Exception: # pylint: disable=W0703
917 return 1
918
919
920 def SearchTags(opts, args):
921 """Searches the tags on all the cluster.
922
923 @param opts: the command line options selected by the user
924 @type args: list
925 @param args: should contain only one element, the tag pattern
926 @rtype: int
927 @return: the desired exit code
928
929 """
930 op = opcodes.OpTagsSearch(pattern=args[0])
931 result = SubmitOpCode(op, opts=opts)
932 if not result:
933 return 1
934 result = list(result)
935 result.sort()
936 for path, tag in result:
937 ToStdout("%s %s", path, tag)
938
939
940 def _ReadAndVerifyCert(cert_filename, verify_private_key=False):
941 """Reads and verifies an X509 certificate.
942
943 @type cert_filename: string
944 @param cert_filename: the path of the file containing the certificate to
945 verify encoded in PEM format
946 @type verify_private_key: bool
947 @param verify_private_key: whether to verify the private key in addition to
948 the public certificate
949 @rtype: string
950 @return: a string containing the PEM-encoded certificate.
951
952 """
953 try:
954 pem = utils.ReadFile(cert_filename)
955 except IOError, err:
956 raise errors.X509CertError(cert_filename,
957 "Unable to read certificate: %s" % str(err))
958
959 try:
960 OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM, pem)
961 except Exception, err:
962 raise errors.X509CertError(cert_filename,
963 "Unable to load certificate: %s" % str(err))
964
965 if verify_private_key:
966 try:
967 OpenSSL.crypto.load_privatekey(OpenSSL.crypto.FILETYPE_PEM, pem)
968 except Exception, err:
969 raise errors.X509CertError(cert_filename,
970 "Unable to load private key: %s" % str(err))
971
972 return pem
973
974
975 def _RenewCrypto(new_cluster_cert, new_rapi_cert, # pylint: disable=R0911
976 rapi_cert_filename, new_spice_cert, spice_cert_filename,
977 spice_cacert_filename, new_confd_hmac_key, new_cds,
978 cds_filename, force, new_node_cert, new_ssh_keys,
979 verbose, debug):
980 """Renews cluster certificates, keys and secrets.
981
982 @type new_cluster_cert: bool
983 @param new_cluster_cert: Whether to generate a new cluster certificate
984 @type new_rapi_cert: bool
985 @param new_rapi_cert: Whether to generate a new RAPI certificate
986 @type rapi_cert_filename: string
987 @param rapi_cert_filename: Path to file containing new RAPI certificate
988 @type new_spice_cert: bool
989 @param new_spice_cert: Whether to generate a new SPICE certificate
990 @type spice_cert_filename: string
991 @param spice_cert_filename: Path to file containing new SPICE certificate
992 @type spice_cacert_filename: string
993 @param spice_cacert_filename: Path to file containing the certificate of the
994 CA that signed the SPICE certificate
995 @type new_confd_hmac_key: bool
996 @param new_confd_hmac_key: Whether to generate a new HMAC key
997 @type new_cds: bool
998 @param new_cds: Whether to generate a new cluster domain secret
999 @type cds_filename: string
1000 @param cds_filename: Path to file containing new cluster domain secret
1001 @type force: bool
1002 @param force: Whether to ask user for confirmation
1003 @type new_node_cert: bool
1004 @param new_node_cert: Whether to generate new node certificates
1005 @type new_ssh_keys: bool
1006 @param new_ssh_keys: Whether to generate new node SSH keys
1007 @type verbose: boolean
1008 @param verbose: show verbose output
1009 @type debug: boolean
1010 @param debug: show debug output
1011
1012 """
1013 ToStdout("Updating certificates now. Running \"gnt-cluster verify\" "
1014 " is recommended after this operation.")
1015
1016 if new_rapi_cert and rapi_cert_filename:
1017 ToStderr("Only one of the --new-rapi-certificate and --rapi-certificate"
1018 " options can be specified at the same time.")
1019 return 1
1020
1021 if new_cds and cds_filename:
1022 ToStderr("Only one of the --new-cluster-domain-secret and"
1023 " --cluster-domain-secret options can be specified at"
1024 " the same time.")
1025 return 1
1026
1027 if new_spice_cert and (spice_cert_filename or spice_cacert_filename):
1028 ToStderr("When using --new-spice-certificate, the --spice-certificate"
1029 " and --spice-ca-certificate must not be used.")
1030 return 1
1031
1032 if bool(spice_cacert_filename) ^ bool(spice_cert_filename):
1033 ToStderr("Both --spice-certificate and --spice-ca-certificate must be"
1034 " specified.")
1035 return 1
1036
1037 rapi_cert_pem, spice_cert_pem, spice_cacert_pem = (None, None, None)
1038 try:
1039 if rapi_cert_filename:
1040 rapi_cert_pem = _ReadAndVerifyCert(rapi_cert_filename, True)
1041 if spice_cert_filename:
1042 spice_cert_pem = _ReadAndVerifyCert(spice_cert_filename, True)
1043 spice_cacert_pem = _ReadAndVerifyCert(spice_cacert_filename)
1044 except errors.X509CertError, err:
1045 ToStderr("Unable to load X509 certificate from %s: %s", err[0], err[1])
1046 return 1
1047
1048 if cds_filename:
1049 try:
1050 cds = utils.ReadFile(cds_filename)
1051 except Exception, err: # pylint: disable=W0703
1052 ToStderr("Can't load new cluster domain secret from %s: %s" %
1053 (cds_filename, str(err)))
1054 return 1
1055 else:
1056 cds = None
1057
1058 if not force:
1059 usertext = ("This requires all daemons on all nodes to be restarted and"
1060 " may take some time. Continue?")
1061 if not AskUser(usertext):
1062 return 1
1063
1064 def _RenewCryptoInner(ctx):
1065 ctx.feedback_fn("Updating certificates and keys")
1066
1067 bootstrap.GenerateClusterCrypto(False,
1068 new_rapi_cert,
1069 new_spice_cert,
1070 new_confd_hmac_key,
1071 new_cds,
1072 False,
1073 None,
1074 rapi_cert_pem=rapi_cert_pem,
1075 spice_cert_pem=spice_cert_pem,
1076 spice_cacert_pem=spice_cacert_pem,
1077 cds=cds)
1078
1079 files_to_copy = []
1080
1081 if new_rapi_cert or rapi_cert_pem:
1082 files_to_copy.append(pathutils.RAPI_CERT_FILE)
1083
1084 if new_spice_cert or spice_cert_pem:
1085 files_to_copy.append(pathutils.SPICE_CERT_FILE)
1086 files_to_copy.append(pathutils.SPICE_CACERT_FILE)
1087
1088 if new_confd_hmac_key:
1089 files_to_copy.append(pathutils.CONFD_HMAC_KEY)
1090
1091 if new_cds or cds:
1092 files_to_copy.append(pathutils.CLUSTER_DOMAIN_SECRET_FILE)
1093
1094 if files_to_copy:
1095 for node_name in ctx.nonmaster_nodes:
1096 port = ctx.ssh_ports[node_name]
1097 ctx.feedback_fn("Copying %s to %s:%d" %
1098 (", ".join(files_to_copy), node_name, port))
1099 for file_name in files_to_copy:
1100 ctx.ssh.CopyFileToNode(node_name, port, file_name)
1101
1102 def _RenewClientCerts(ctx):
1103 ctx.feedback_fn("Updating client SSL certificates.")
1104
1105 cluster_name = ssconf.SimpleStore().GetClusterName()
1106
1107 for node_name in ctx.nonmaster_nodes + [ctx.master_node]:
1108 ssh_port = ctx.ssh_ports[node_name]
1109 data = {
1110 constants.NDS_CLUSTER_NAME: cluster_name,
1111 constants.NDS_NODE_DAEMON_CERTIFICATE:
1112 utils.ReadFile(pathutils.NODED_CERT_FILE),
1113 constants.NDS_NODE_NAME: node_name,
1114 constants.NDS_ACTION: constants.CRYPTO_ACTION_CREATE,
1115 }
1116
1117 ssh.RunSshCmdWithStdin(
1118 cluster_name,
1119 node_name,
1120 pathutils.SSL_UPDATE,
1121 ssh_port,
1122 data,
1123 debug=ctx.debug,
1124 verbose=ctx.verbose,
1125 use_cluster_key=True,
1126 ask_key=False,
1127 strict_host_check=True)
1128
1129 # Create a temporary ssconf file using the master's client cert digest
1130 # and the 'bootstrap' keyword to enable distribution of all nodes' digests.
1131 master_digest = utils.GetCertificateDigest()
1132 ssconf_master_candidate_certs_filename = os.path.join(
1133 pathutils.DATA_DIR, "%s%s" %
1134 (constants.SSCONF_FILEPREFIX, constants.SS_MASTER_CANDIDATES_CERTS))
1135 utils.WriteFile(
1136 ssconf_master_candidate_certs_filename,
1137 data="%s=%s" % (constants.CRYPTO_BOOTSTRAP, master_digest))
1138 for node_name in ctx.nonmaster_nodes:
1139 port = ctx.ssh_ports[node_name]
1140 ctx.feedback_fn("Copying %s to %s:%d" %
1141 (ssconf_master_candidate_certs_filename, node_name, port))
1142 ctx.ssh.CopyFileToNode(node_name, port,
1143 ssconf_master_candidate_certs_filename)
1144
1145 # Write the boostrap entry to the config using wconfd.
1146 config_live_lock = utils.livelock.LiveLock("renew_crypto")
1147 cfg = config.GetConfig(None, config_live_lock)
1148 cfg.AddNodeToCandidateCerts(constants.CRYPTO_BOOTSTRAP, master_digest)
1149 cfg.Update(cfg.GetClusterInfo(), ctx.feedback_fn)
1150
1151 def _RenewServerAndClientCerts(ctx):
1152 ctx.feedback_fn("Updating the cluster SSL certificate.")
1153
1154 master_name = ssconf.SimpleStore().GetMasterNode()
1155 bootstrap.GenerateClusterCrypto(True, # cluster cert
1156 False, # rapi cert
1157 False, # spice cert
1158 False, # confd hmac key
1159 False, # cds
1160 True, # client cert
1161 master_name)
1162
1163 for node_name in ctx.nonmaster_nodes:
1164 port = ctx.ssh_ports[node_name]
1165 server_cert = pathutils.NODED_CERT_FILE
1166 ctx.feedback_fn("Copying %s to %s:%d" %
1167 (server_cert, node_name, port))
1168 ctx.ssh.CopyFileToNode(node_name, port, server_cert)
1169
1170 _RenewClientCerts(ctx)
1171
1172 if new_rapi_cert or new_spice_cert or new_confd_hmac_key or new_cds:
1173 RunWhileClusterStopped(ToStdout, _RenewCryptoInner)
1174
1175 # If only node certficates are recreated, call _RenewClientCerts only.
1176 if new_node_cert and not new_cluster_cert:
1177 RunWhileDaemonsStopped(ToStdout, [constants.NODED, constants.WCONFD],
1178 _RenewClientCerts, verbose=verbose, debug=debug)
1179
1180 # If the cluster certificate are renewed, the client certificates need
1181 # to be renewed too.
1182 if new_cluster_cert:
1183 RunWhileDaemonsStopped(ToStdout, [constants.NODED, constants.WCONFD],
1184 _RenewServerAndClientCerts, verbose=verbose,
1185 debug=debug)
1186
1187 if new_node_cert or new_cluster_cert or new_ssh_keys:
1188 cl = GetClient()
1189 renew_op = opcodes.OpClusterRenewCrypto(
1190 node_certificates=new_node_cert or new_cluster_cert,
1191 ssh_keys=new_ssh_keys)
1192 SubmitOpCode(renew_op, cl=cl)
1193
1194 ToStdout("All requested certificates and keys have been replaced."
1195 " Running \"gnt-cluster verify\" now is recommended.")
1196
1197 return 0
1198
1199
1200 def _BuildGanetiPubKeys(options, pub_key_file=pathutils.SSH_PUB_KEYS, cl=None,
1201 get_online_nodes_fn=GetOnlineNodes,
1202 get_nodes_ssh_ports_fn=GetNodesSshPorts,
1203 get_node_uuids_fn=GetNodeUUIDs,
1204 homedir_fn=None):
1205 """Recreates the 'ganeti_pub_key' file by polling all nodes.
1206
1207 """
1208 if os.path.exists(pub_key_file):
1209 utils.CreateBackup(pub_key_file)
1210 utils.RemoveFile(pub_key_file)
1211
1212 ssh.ClearPubKeyFile(pub_key_file)
1213
1214 if not cl:
1215 cl = GetClient()
1216
1217 (cluster_name, master_node) = \
1218 cl.QueryConfigValues(["cluster_name", "master_node"])
1219
1220 online_nodes = get_online_nodes_fn([], cl=cl)
1221 ssh_ports = get_nodes_ssh_ports_fn(online_nodes + [master_node], cl)
1222 ssh_port_map = dict(zip(online_nodes + [master_node], ssh_ports))
1223
1224 node_uuids = get_node_uuids_fn(online_nodes + [master_node], cl)
1225 node_uuid_map = dict(zip(online_nodes + [master_node], node_uuids))
1226
1227 nonmaster_nodes = [name for name in online_nodes
1228 if name != master_node]
1229
1230 _, pub_key_filename, _ = \
1231 ssh.GetUserFiles(constants.SSH_LOGIN_USER, mkdir=False, dircheck=False,
1232 kind=constants.SSHK_DSA, _homedir_fn=homedir_fn)
1233
1234 # get the key file of the master node
1235 pub_key = utils.ReadFile(pub_key_filename)
1236 ssh.AddPublicKey(node_uuid_map[master_node], pub_key,
1237 key_file=pub_key_file)
1238
1239 # get the key files of all non-master nodes
1240 for node in nonmaster_nodes:
1241 pub_key = ssh.ReadRemoteSshPubKeys(pub_key_filename, node, cluster_name,
1242 ssh_port_map[node],
1243 options.ssh_key_check,
1244 options.ssh_key_check)
1245 ssh.AddPublicKey(node_uuid_map[node], pub_key, key_file=pub_key_file)
1246
1247
1248 def RenewCrypto(opts, args):
1249 """Renews cluster certificates, keys and secrets.
1250
1251 """
1252 if opts.new_ssh_keys:
1253 _BuildGanetiPubKeys(opts)
1254 return _RenewCrypto(opts.new_cluster_cert,
1255 opts.new_rapi_cert,
1256 opts.rapi_cert,
1257 opts.new_spice_cert,
1258 opts.spice_cert,
1259 opts.spice_cacert,
1260 opts.new_confd_hmac_key,
1261 opts.new_cluster_domain_secret,
1262 opts.cluster_domain_secret,
1263 opts.force,
1264 opts.new_node_cert,
1265 opts.new_ssh_keys,
1266 opts.verbose,
1267 opts.debug > 0)
1268
1269
1270 def _GetEnabledDiskTemplates(opts):
1271 """Determine the list of enabled disk templates.
1272
1273 """
1274 if opts.enabled_disk_templates:
1275 return opts.enabled_disk_templates.split(",")
1276 else:
1277 return None
1278
1279
1280 def _GetVgName(opts, enabled_disk_templates):
1281 """Determine the volume group name.
1282
1283 @type enabled_disk_templates: list of strings
1284 @param enabled_disk_templates: cluster-wide enabled disk-templates
1285
1286 """
1287 # consistency between vg name and enabled disk templates
1288 vg_name = None
1289 if opts.vg_name is not None:
1290 vg_name = opts.vg_name
1291 if enabled_disk_templates:
1292 if vg_name and not utils.IsLvmEnabled(enabled_disk_templates):
1293 ToStdout("You specified a volume group with --vg-name, but you did not"
1294 " enable any of the following lvm-based disk templates: %s" %
1295 utils.CommaJoin(constants.DTS_LVM))
1296 return vg_name
1297
1298
1299 def _GetDrbdHelper(opts, enabled_disk_templates):
1300 """Determine the DRBD usermode helper.
1301
1302 """
1303 drbd_helper = opts.drbd_helper
1304 if enabled_disk_templates:
1305 drbd_enabled = constants.DT_DRBD8 in enabled_disk_templates
1306 if not drbd_enabled and opts.drbd_helper:
1307 ToStdout("You specified a DRBD usermode helper with "
1308 " --drbd-usermode-helper while DRBD is not enabled.")
1309 return drbd_helper
1310
1311
1312 def _GetCompressionTools(opts):
1313 """Determine the list of custom compression tools.
1314
1315 """
1316 if opts.compression_tools:
1317 return opts.compression_tools.split(",")
1318 elif opts.compression_tools is None:
1319 return None # To note the parameter was not provided
1320 else:
1321 return constants.IEC_DEFAULT_TOOLS # Resetting to default
1322
1323
1324 def SetClusterParams(opts, args):
1325 """Modify the cluster.
1326
1327 @param opts: the command line options selected by the user
1328 @type args: list
1329 @param args: should be an empty list
1330 @rtype: int
1331 @return: the desired exit code
1332
1333 """
1334 if not (opts.vg_name is not None or
1335 opts.drbd_helper is not None or
1336 opts.enabled_hypervisors or opts.hvparams or
1337 opts.beparams or opts.nicparams or
1338 opts.ndparams or opts.diskparams or
1339 opts.candidate_pool_size is not None or
1340 opts.max_running_jobs is not None or
1341 opts.max_tracked_jobs is not None or
1342 opts.uid_pool is not None or
1343 opts.maintain_node_health is not None or
1344 opts.add_uids is not None or
1345 opts.remove_uids is not None or
1346 opts.default_iallocator is not None or
1347 opts.default_iallocator_params is not None or
1348 opts.reserved_lvs is not None or
1349 opts.mac_prefix is not None or
1350 opts.master_netdev is not None or
1351 opts.master_netmask is not None or
1352 opts.use_external_mip_script is not None or
1353 opts.prealloc_wipe_disks is not None or
1354 opts.hv_state or
1355 opts.enabled_disk_templates or
1356 opts.disk_state or
1357 opts.ipolicy_bounds_specs is not None or
1358 opts.ipolicy_std_specs is not None or
1359 opts.ipolicy_disk_templates is not None or
1360 opts.ipolicy_vcpu_ratio is not None or
1361 opts.ipolicy_spindle_ratio is not None or
1362 opts.modify_etc_hosts is not None or
1363 opts.file_storage_dir is not None or
1364 opts.install_image is not None or
1365 opts.instance_communication_network is not None or
1366 opts.zeroing_image is not None or
1367 opts.shared_file_storage_dir is not None or
1368 opts.compression_tools is not None or
1369 opts.shared_file_storage_dir is not None or
1370 opts.enabled_user_shutdown is not None or
1371 opts.data_collector_interval or
1372 opts.enabled_data_collectors):
1373 ToStderr("Please give at least one of the parameters.")
1374 return 1
1375
1376 enabled_disk_templates = _GetEnabledDiskTemplates(opts)
1377 vg_name = _GetVgName(opts, enabled_disk_templates)
1378
1379 try:
1380 drbd_helper = _GetDrbdHelper(opts, enabled_disk_templates)
1381 except errors.OpPrereqError, e:
1382 ToStderr(str(e))
1383 return 1
1384
1385 hvlist = opts.enabled_hypervisors
1386 if hvlist is not None:
1387 hvlist = hvlist.split(",")
1388
1389 # a list of (name, dict) we can pass directly to dict() (or [])
1390 hvparams = dict(opts.hvparams)
1391 for hv_params in hvparams.values():
1392 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
1393
1394 diskparams = dict(opts.diskparams)
1395
1396 for dt_params in diskparams.values():
1397 utils.ForceDictType(dt_params, constants.DISK_DT_TYPES)
1398
1399 beparams = opts.beparams
1400 utils.ForceDictType(beparams, constants.BES_PARAMETER_COMPAT)
1401
1402 nicparams = opts.nicparams
1403 utils.ForceDictType(nicparams, constants.NICS_PARAMETER_TYPES)
1404
1405 ndparams = opts.ndparams
1406 if ndparams is not None:
1407 utils.ForceDictType(ndparams, constants.NDS_PARAMETER_TYPES)
1408
1409 ipolicy = CreateIPolicyFromOpts(
1410 minmax_ispecs=opts.ipolicy_bounds_specs,
1411 std_ispecs=opts.ipolicy_std_specs,
1412 ipolicy_disk_templates=opts.ipolicy_disk_templates,
1413 ipolicy_vcpu_ratio=opts.ipolicy_vcpu_ratio,
1414 ipolicy_spindle_ratio=opts.ipolicy_spindle_ratio,
1415 )
1416
1417 mnh = opts.maintain_node_health
1418
1419 uid_pool = opts.uid_pool
1420 if uid_pool is not None:
1421 uid_pool = uidpool.ParseUidPool(uid_pool)
1422
1423 add_uids = opts.add_uids
1424 if add_uids is not None:
1425 add_uids = uidpool.ParseUidPool(add_uids)
1426
1427 remove_uids = opts.remove_uids
1428 if remove_uids is not None:
1429 remove_uids = uidpool.ParseUidPool(remove_uids)
1430
1431 if opts.reserved_lvs is not None:
1432 if opts.reserved_lvs == "":
1433 opts.reserved_lvs = []
1434 else:
1435 opts.reserved_lvs = utils.UnescapeAndSplit(opts.reserved_lvs, sep=",")
1436
1437 if opts.master_netmask is not None:
1438 try:
1439 opts.master_netmask = int(opts.master_netmask)
1440 except ValueError:
1441 ToStderr("The --master-netmask option expects an int parameter.")
1442 return 1
1443
1444 ext_ip_script = opts.use_external_mip_script
1445
1446 if opts.disk_state:
1447 disk_state = utils.FlatToDict(opts.disk_state)
1448 else:
1449 disk_state = {}
1450
1451 hv_state = dict(opts.hv_state)
1452
1453 compression_tools = _GetCompressionTools(opts)
1454
1455 enabled_data_collectors = dict(
1456 (k, v.lower().startswith("t"))
1457 for k, v in opts.enabled_data_collectors.items())
1458
1459 unrecognized_data_collectors = [
1460 k for k in enabled_data_collectors.keys()
1461 if k not in constants.DATA_COLLECTOR_NAMES]
1462 if unrecognized_data_collectors:
1463 ToStderr("Data collector names not recognized: %s" %
1464 ", ".join(unrecognized_data_collectors))
1465
1466 try:
1467 data_collector_interval = dict(
1468 (k, long(1e6 * float(v)))
1469 for (k, v) in opts.data_collector_interval.items())
1470 except ValueError:
1471 ToStderr("Can't transform all values to integers: {}".format(
1472 opts.data_collector_interval))
1473 return 1
1474 if any(v <= 0 for v in data_collector_interval):
1475 ToStderr("Some interval times where not above zero.")
1476 return 1
1477
1478 op = opcodes.OpClusterSetParams(
1479 vg_name=vg_name,
1480 drbd_helper=drbd_helper,
1481 enabled_hypervisors=hvlist,
1482 hvparams=hvparams,
1483 os_hvp=None,
1484 beparams=beparams,
1485 nicparams=nicparams,
1486 ndparams=ndparams,
1487 diskparams=diskparams,
1488 ipolicy=ipolicy,
1489 candidate_pool_size=opts.candidate_pool_size,
1490 max_running_jobs=opts.max_running_jobs,
1491 max_tracked_jobs=opts.max_tracked_jobs,
1492 maintain_node_health=mnh,
1493 modify_etc_hosts=opts.modify_etc_hosts,
1494 uid_pool=uid_pool,
1495 add_uids=add_uids,
1496 remove_uids=remove_uids,
1497 default_iallocator=opts.default_iallocator,
1498 default_iallocator_params=opts.default_iallocator_params,
1499 prealloc_wipe_disks=opts.prealloc_wipe_disks,
1500 mac_prefix=opts.mac_prefix,
1501 master_netdev=opts.master_netdev,
1502 master_netmask=opts.master_netmask,
1503 reserved_lvs=opts.reserved_lvs,
1504 use_external_mip_script=ext_ip_script,
1505 hv_state=hv_state,
1506 disk_state=disk_state,
1507 enabled_disk_templates=enabled_disk_templates,
1508 force=opts.force,
1509 file_storage_dir=opts.file_storage_dir,
1510 install_image=opts.install_image,
1511 instance_communication_network=opts.instance_communication_network,
1512 zeroing_image=opts.zeroing_image,
1513 shared_file_storage_dir=opts.shared_file_storage_dir,
1514 compression_tools=compression_tools,
1515 enabled_user_shutdown=opts.enabled_user_shutdown,
1516 enabled_data_collectors=enabled_data_collectors,
1517 data_collector_interval=data_collector_interval,
1518 )
1519 return base.GetResult(None, opts, SubmitOrSend(op, opts))
1520
1521
1522 def QueueOps(opts, args):
1523 """Queue operations.
1524
1525 @param opts: the command line options selected by the user
1526 @type args: list
1527 @param args: should contain only one element, the subcommand
1528 @rtype: int
1529 @return: the desired exit code
1530
1531 """
1532 command = args[0]
1533 client = GetClient()
1534 if command in ("drain", "undrain"):
1535 drain_flag = command == "drain"
1536 client.SetQueueDrainFlag(drain_flag)
1537 elif command == "info":
1538 result = client.QueryConfigValues(["drain_flag"])
1539 if result[0]:
1540 val = "set"
1541 else:
1542 val = "unset"
1543 ToStdout("The drain flag is %s" % val)
1544 else:
1545 raise errors.OpPrereqError("Command '%s' is not valid." % command,
1546 errors.ECODE_INVAL)
1547
1548 return 0
1549
1550
1551 def _ShowWatcherPause(until):
1552 if until is None or until < time.time():
1553 ToStdout("The watcher is not paused.")
1554 else:
1555 ToStdout("The watcher is paused until %s.", time.ctime(until))
1556
1557
1558 def WatcherOps(opts, args):
1559 """Watcher operations.
1560
1561 @param opts: the command line options selected by the user
1562 @type args: list
1563 @param args: should contain only one element, the subcommand
1564 @rtype: int
1565 @return: the desired exit code
1566
1567 """
1568 command = args[0]
1569 client = GetClient()
1570
1571 if command == "continue":
1572 client.SetWatcherPause(None)
1573 ToStdout("The watcher is no longer paused.")
1574
1575 elif command == "pause":
1576 if len(args) < 2:
1577 raise errors.OpPrereqError("Missing pause duration", errors.ECODE_INVAL)
1578
1579 result = client.SetWatcherPause(time.time() + ParseTimespec(args[1]))
1580 _ShowWatcherPause(result)
1581
1582 elif command == "info":
1583 result = client.QueryConfigValues(["watcher_pause"])
1584 _ShowWatcherPause(result[0])
1585
1586 else:
1587 raise errors.OpPrereqError("Command '%s' is not valid." % command,
1588 errors.ECODE_INVAL)
1589
1590 return 0
1591
1592
1593 def _OobPower(opts, node_list, power):
1594 """Puts the node in the list to desired power state.
1595
1596 @param opts: The command line options selected by the user
1597 @param node_list: The list of nodes to operate on
1598 @param power: True if they should be powered on, False otherwise
1599 @return: The success of the operation (none failed)
1600
1601 """
1602 if power:
1603 command = constants.OOB_POWER_ON
1604 else:
1605 command = constants.OOB_POWER_OFF
1606
1607 op = opcodes.OpOobCommand(node_names=node_list,
1608 command=command,
1609 ignore_status=True,
1610 timeout=opts.oob_timeout,
1611 power_delay=opts.power_delay)
1612 result = SubmitOpCode(op, opts=opts)
1613 errs = 0
1614 for node_result in result:
1615 (node_tuple, data_tuple) = node_result
1616 (_, node_name) = node_tuple
1617 (data_status, _) = data_tuple
1618 if data_status != constants.RS_NORMAL:
1619 assert data_status != constants.RS_UNAVAIL
1620 errs += 1
1621 ToStderr("There was a problem changing power for %s, please investigate",
1622 node_name)
1623
1624 if errs > 0:
1625 return False
1626
1627 return True
1628
1629
1630 def _InstanceStart(opts, inst_list, start, no_remember=False):
1631 """Puts the instances in the list to desired state.
1632
1633 @param opts: The command line options selected by the user
1634 @param inst_list: The list of instances to operate on
1635 @param start: True if they should be started, False for shutdown
1636 @param no_remember: If the instance state should be remembered
1637 @return: The success of the operation (none failed)
1638
1639 """
1640 if start:
1641 opcls = opcodes.OpInstanceStartup
1642 text_submit, text_success, text_failed = ("startup", "started", "starting")
1643 else:
1644 opcls = compat.partial(opcodes.OpInstanceShutdown,
1645 timeout=opts.shutdown_timeout,
1646 no_remember=no_remember)
1647 text_submit, text_success, text_failed = ("shutdown", "stopped", "stopping")
1648
1649 jex = JobExecutor(opts=opts)
1650
1651 for inst in inst_list:
1652 ToStdout("Submit %s of instance %s", text_submit, inst)
1653 op = opcls(instance_name=inst)
1654 jex.QueueJob(inst, op)
1655
1656 results = jex.GetResults()
1657 bad_cnt = len([1 for (success, _) in results if not success])
1658
1659 if bad_cnt == 0:
1660 ToStdout("All instances have been %s successfully", text_success)
1661 else:
1662 ToStderr("There were errors while %s instances:\n"
1663 "%d error(s) out of %d instance(s)", text_failed, bad_cnt,
1664 len(results))
1665 return False
1666
1667 return True
1668
1669
1670 class _RunWhenNodesReachableHelper(object):
1671 """Helper class to make shared internal state sharing easier.
1672
1673 @ivar success: Indicates if all action_cb calls were successful
1674
1675 """
1676 def __init__(self, node_list, action_cb, node2ip, port, feedback_fn,
1677 _ping_fn=netutils.TcpPing, _sleep_fn=time.sleep):
1678 """Init the object.
1679
1680 @param node_list: The list of nodes to be reachable
1681 @param action_cb: Callback called when a new host is reachable
1682 @type node2ip: dict
1683 @param node2ip: Node to ip mapping
1684 @param port: The port to use for the TCP ping
1685 @param feedback_fn: The function used for feedback
1686 @param _ping_fn: Function to check reachabilty (for unittest use only)
1687 @param _sleep_fn: Function to sleep (for unittest use only)
1688
1689 """
1690 self.down = set(node_list)
1691 self.up = set()
1692 self.node2ip = node2ip
1693 self.success = True
1694 self.action_cb = action_cb
1695 self.port = port
1696 self.feedback_fn = feedback_fn
1697 self._ping_fn = _ping_fn
1698 self._sleep_fn = _sleep_fn
1699
1700 def __call__(self):
1701 """When called we run action_cb.
1702
1703 @raises utils.RetryAgain: When there are still down nodes
1704
1705 """
1706 if not self.action_cb(self.up):
1707 self.success = False
1708
1709 if self.down:
1710 raise utils.RetryAgain()
1711 else:
1712 return self.success
1713
1714 def Wait(self, secs):
1715 """Checks if a host is up or waits remaining seconds.
1716
1717 @param secs: The secs remaining
1718
1719 """
1720 start = time.time()
1721 for node in self.down:
1722 if self._ping_fn(self.node2ip[node], self.port, timeout=_EPO_PING_TIMEOUT,
1723 live_port_needed=True):
1724 self.feedback_fn("Node %s became available" % node)
1725 self.up.add(node)
1726 self.down -= self.up
1727 # If we have a node available there is the possibility to run the
1728 # action callback successfully, therefore we don't wait and return
1729 return
1730
1731 self._sleep_fn(max(0.0, start + secs - time.time()))
1732
1733
1734 def _RunWhenNodesReachable(node_list, action_cb, interval):
1735 """Run action_cb when nodes become reachable.
1736
1737 @param node_list: The list of nodes to be reachable
1738 @param action_cb: Callback called when a new host is reachable
1739 @param interval: The earliest time to retry
1740
1741 """
1742 client = GetClient()
1743 cluster_info = client.QueryClusterInfo()
1744 if cluster_info["primary_ip_version"] == constants.IP4_VERSION:
1745 family = netutils.IPAddress.family
1746 else:
1747 family = netutils.IP6Address.family
1748
1749 node2ip = dict((node, netutils.GetHostname(node, family=family).ip)
1750 for node in node_list)
1751
1752 port = netutils.GetDaemonPort(constants.NODED)
1753 helper = _RunWhenNodesReachableHelper(node_list, action_cb, node2ip, port,
1754 ToStdout)
1755
1756 try:
1757 return utils.Retry(helper, interval, _EPO_REACHABLE_TIMEOUT,
1758 wait_fn=helper.Wait)
1759 except utils.RetryTimeout:
1760 ToStderr("Time exceeded while waiting for nodes to become reachable"
1761 " again:\n - %s", " - ".join(helper.down))
1762 return False
1763
1764
1765 def _MaybeInstanceStartup(opts, inst_map, nodes_online,
1766 _instance_start_fn=_InstanceStart):
1767 """Start the instances conditional based on node_states.
1768
1769 @param opts: The command line options selected by the user
1770 @param inst_map: A dict of inst -> nodes mapping
1771 @param nodes_online: A list of nodes online
1772 @param _instance_start_fn: Callback to start instances (unittest use only)
1773 @return: Success of the operation on all instances
1774
1775 """
1776 start_inst_list = []
1777 for (inst, nodes) in inst_map.items():
1778 if not (nodes - nodes_online):
1779 # All nodes the instance lives on are back online
1780 start_inst_list.append(inst)
1781
1782 for inst in start_inst_list:
1783 del inst_map[inst]
1784
1785 if start_inst_list:
1786 return _instance_start_fn(opts, start_inst_list, True)
1787
1788 return True
1789
1790
1791 def _EpoOn(opts, full_node_list, node_list, inst_map):
1792 """Does the actual power on.
1793
1794 @param opts: The command line options selected by the user
1795 @param full_node_list: All nodes to operate on (includes nodes not supporting
1796 OOB)
1797 @param node_list: The list of nodes to operate on (all need to support OOB)
1798 @param inst_map: A dict of inst -> nodes mapping
1799 @return: The desired exit status
1800
1801 """
1802 if node_list and not _OobPower(opts, node_list, False):
1803 ToStderr("Not all nodes seem to get back up, investigate and start"
1804 " manually if needed")
1805
1806 # Wait for the nodes to be back up
1807 action_cb = compat.partial(_MaybeInstanceStartup, opts, dict(inst_map))
1808
1809 ToStdout("Waiting until all nodes are available again")
1810 if not _RunWhenNodesReachable(full_node_list, action_cb, _EPO_PING_INTERVAL):
1811 ToStderr("Please investigate and start stopped instances manually")
1812 return constants.EXIT_FAILURE
1813
1814 return constants.EXIT_SUCCESS
1815
1816
1817 def _EpoOff(opts, node_list, inst_map):
1818 """Does the actual power off.
1819
1820 @param opts: The command line options selected by the user
1821 @param node_list: The list of nodes to operate on (all need to support OOB)
1822 @param inst_map: A dict of inst -> nodes mapping
1823 @return: The desired exit status
1824
1825 """
1826 if not _InstanceStart(opts, inst_map.keys(), False, no_remember=True):
1827 ToStderr("Please investigate and stop instances manually before continuing")
1828 return constants.EXIT_FAILURE
1829
1830 if not node_list:
1831 return constants.EXIT_SUCCESS
1832
1833 if _OobPower(opts, node_list, False):
1834 return constants.EXIT_SUCCESS
1835 else:
1836 return constants.EXIT_FAILURE
1837
1838
1839 def Epo(opts, args, qcl=None, _on_fn=_EpoOn, _off_fn=_EpoOff,
1840 _confirm_fn=ConfirmOperation,
1841 _stdout_fn=ToStdout, _stderr_fn=ToStderr):
1842 """EPO operations.
1843
1844 @param opts: the command line options selected by the user
1845 @type args: list
1846 @param args: should contain only one element, the subcommand
1847 @rtype: int
1848 @return: the desired exit code
1849
1850 """
1851 if opts.groups and opts.show_all:
1852 _stderr_fn("Only one of --groups or --all are allowed")
1853 return constants.EXIT_FAILURE
1854 elif args and opts.show_all:
1855 _stderr_fn("Arguments in combination with --all are not allowed")
1856 return constants.EXIT_FAILURE
1857
1858 if qcl is None:
1859 # Query client
1860 qcl = GetClient()
1861
1862 if opts.groups:
1863 node_query_list = \
1864 itertools.chain(*qcl.QueryGroups(args, ["node_list"], False))
1865 else:
1866 node_query_list = args
1867
1868 result = qcl.QueryNodes(node_query_list, ["name", "master", "pinst_list",
1869 "sinst_list", "powered", "offline"],
1870 False)
1871
1872 all_nodes = map(compat.fst, result)
1873 node_list = []
1874 inst_map = {}
1875 for (node, master, pinsts, sinsts, powered, offline) in result:
1876 if not offline:
1877 for inst in (pinsts + sinsts):
1878 if inst in inst_map:
1879 if not master:
1880 inst_map[inst].add(node)
1881 elif master:
1882 inst_map[inst] = set()
1883 else:
1884 inst_map[inst] = set([node])
1885
1886 if master and opts.on:
1887 # We ignore the master for turning on the machines, in fact we are
1888 # already operating on the master at this point :)
1889 continue
1890 elif master and not opts.show_all:
1891 _stderr_fn("%s is the master node, please do a master-failover to another"
1892 " node not affected by the EPO or use --all if you intend to"
1893 " shutdown the whole cluster", node)
1894 return constants.EXIT_FAILURE
1895 elif powered is None:
1896 _stdout_fn("Node %s does not support out-of-band handling, it can not be"
1897 " handled in a fully automated manner", node)
1898 elif powered == opts.on:
1899 _stdout_fn("Node %s is already in desired power state, skipping", node)
1900 elif not offline or (offline and powered):
1901 node_list.append(node)
1902
1903 if not (opts.force or _confirm_fn(all_nodes, "nodes", "epo")):
1904 return constants.EXIT_FAILURE
1905
1906 if opts.on:
1907 return _on_fn(opts, all_nodes, node_list, inst_map)
1908 else:
1909 return _off_fn(opts, node_list, inst_map)
1910
1911
1912 def _GetCreateCommand(info):
1913 buf = StringIO()
1914 buf.write("gnt-cluster init")
1915 PrintIPolicyCommand(buf, info["ipolicy"], False)
1916 buf.write(" ")
1917 buf.write(info["name"])
1918 return buf.getvalue()
1919
1920
1921 def ShowCreateCommand(opts, args):
1922 """Shows the command that can be used to re-create the cluster.
1923
1924 Currently it works only for ipolicy specs.
1925
1926 """
1927 cl = GetClient()
1928 result = cl.QueryClusterInfo()
1929 ToStdout(_GetCreateCommand(result))
1930
1931
1932 def _RunCommandAndReport(cmd):
1933 """Run a command and report its output, iff it failed.
1934
1935 @param cmd: the command to execute
1936 @type cmd: list
1937 @rtype: bool
1938 @return: False, if the execution failed.
1939
1940 """
1941 result = utils.RunCmd(cmd)
1942 if result.failed:
1943 ToStderr("Command %s failed: %s; Output %s" %
1944 (cmd, result.fail_reason, result.output))
1945 return False
1946 return True
1947
1948
1949 def _VerifyCommand(cmd):
1950 """Verify that a given command succeeds on all online nodes.
1951
1952 As this function is intended to run during upgrades, it
1953 is implemented in such a way that it still works, if all Ganeti
1954 daemons are down.
1955
1956 @param cmd: the command to execute
1957 @type cmd: list
1958 @rtype: list
1959 @return: the list of node names that are online where
1960 the command failed.
1961
1962 """
1963 command = utils.text.ShellQuoteArgs([str(val) for val in cmd])
1964
1965 nodes = ssconf.SimpleStore().GetOnlineNodeList()
1966 master_node = ssconf.SimpleStore().GetMasterNode()
1967 cluster_name = ssconf.SimpleStore().GetClusterName()
1968
1969 # If master node is in 'nodes', make sure master node is at list end
1970 if master_node in nodes:
1971 nodes.remove(master_node)
1972 nodes.append(master_node)
1973
1974 failed = []
1975
1976 srun = ssh.SshRunner(cluster_name=cluster_name)
1977 for name in nodes:
1978 result = srun.Run(name, constants.SSH_LOGIN_USER, command)
1979 if result.exit_code != 0:
1980 failed.append(name)
1981
1982 return failed
1983
1984
1985 def _VerifyVersionInstalled(versionstring):
1986 """Verify that the given version of ganeti is installed on all online nodes.
1987
1988 Do nothing, if this is the case, otherwise print an appropriate
1989 message to stderr.
1990
1991 @param versionstring: the version to check for
1992 @type versionstring: string
1993 @rtype: bool
1994 @return: True, if the version is installed on all online nodes
1995
1996 """
1997 badnodes = _VerifyCommand(["test", "-d",
1998 os.path.join(pathutils.PKGLIBDIR, versionstring)])
1999 if badnodes:
2000 ToStderr("Ganeti version %s not installed on nodes %s"
2001 % (versionstring, ", ".join(badnodes)))
2002 return False
2003
2004 return True
2005
2006
2007 def _GetRunning():
2008 """Determine the list of running jobs.
2009
2010 @rtype: list
2011 @return: the number of jobs still running
2012
2013 """
2014 cl = GetClient()
2015 qfilter = qlang.MakeSimpleFilter("status",
2016 frozenset([constants.JOB_STATUS_RUNNING]))
2017 return len(cl.Query(constants.QR_JOB, [], qfilter).data)
2018
2019
2020 def _SetGanetiVersion(versionstring):
2021 """Set the active version of ganeti to the given versionstring
2022
2023 @type versionstring: string
2024 @rtype: list
2025 @return: the list of nodes where the version change failed
2026
2027 """
2028 failed = []
2029 if constants.HAS_GNU_LN:
2030 failed.extend(_VerifyCommand(
2031 ["ln", "-s", "-f", "-T",
2032 os.path.join(pathutils.PKGLIBDIR, versionstring),
2033 os.path.join(pathutils.SYSCONFDIR, "ganeti/lib")]))
2034 failed.extend(_VerifyCommand(
2035 ["ln", "-s", "-f", "-T",
2036 os.path.join(pathutils.SHAREDIR, versionstring),
2037 os.path.join(pathutils.SYSCONFDIR, "ganeti/share")]))
2038 else:
2039 failed.extend(_VerifyCommand(
2040 ["rm", "-f", os.path.join(pathutils.SYSCONFDIR, "ganeti/lib")]))
2041 failed.extend(_VerifyCommand(
2042 ["ln", "-s", "-f", os.path.join(pathutils.PKGLIBDIR, versionstring),
2043 os.path.join(pathutils.SYSCONFDIR, "ganeti/lib")]))
2044 failed.extend(_VerifyCommand(
2045 ["rm", "-f", os.path.join(pathutils.SYSCONFDIR, "ganeti/share")]))
2046 failed.extend(_VerifyCommand(
2047 ["ln", "-s", "-f", os.path.join(pathutils.SHAREDIR, versionstring),
2048 os.path.join(pathutils.SYSCONFDIR, "ganeti/share")]))
2049 return list(set(failed))
2050
2051
2052 def _ExecuteCommands(fns):
2053 """Execute a list of functions, in reverse order.
2054
2055 @type fns: list of functions.
2056 @param fns: the functions to be executed.
2057
2058 """
2059 for fn in reversed(fns):
2060 fn()
2061
2062
2063 def _GetConfigVersion():
2064 """Determine the version the configuration file currently has.
2065
2066 @rtype: tuple or None
2067 @return: (major, minor, revision) if the version can be determined,
2068 None otherwise
2069
2070 """
2071 config_data = serializer.LoadJson(utils.ReadFile(pathutils.CLUSTER_CONF_FILE))
2072 try:
2073 config_version = config_data["version"]
2074 except KeyError:
2075 return None
2076 return utils.SplitVersion(config_version)
2077
2078
2079 def _ReadIntentToUpgrade():
2080 """Read the file documenting the intent to upgrade the cluster.
2081
2082 @rtype: (string, string) or (None, None)
2083 @return: (old version, version to upgrade to), if the file exists,
2084 and (None, None) otherwise.
2085
2086 """
2087 if not os.path.isfile(pathutils.INTENT_TO_UPGRADE):
2088 return (None, None)
2089
2090 contentstring = utils.ReadFile(pathutils.INTENT_TO_UPGRADE)
2091 contents = utils.UnescapeAndSplit(contentstring)
2092 if len(contents) != 3:
2093 # file syntactically mal-formed
2094 return (None, None)
2095 return (contents[0], contents[1])
2096
2097
2098 def _WriteIntentToUpgrade(version):
2099 """Write file documenting the intent to upgrade the cluster.
2100
2101 @type version: string
2102 @param version: the version we intent to upgrade to
2103
2104 """
2105 utils.WriteFile(pathutils.INTENT_TO_UPGRADE,
2106 data=utils.EscapeAndJoin([constants.RELEASE_VERSION, version,
2107 "%d" % os.getpid()]))
2108
2109
2110 def _UpgradeBeforeConfigurationChange(versionstring):
2111 """
2112 Carry out all the tasks necessary for an upgrade that happen before
2113 the configuration file, or Ganeti version, changes.
2114
2115 @type versionstring: string
2116 @param versionstring: the version to upgrade to
2117 @rtype: (bool, list)
2118 @return: tuple of a bool indicating success and a list of rollback tasks
2119
2120 """
2121 rollback = []
2122
2123 if not _VerifyVersionInstalled(versionstring):
2124 return (False, rollback)
2125
2126 _WriteIntentToUpgrade(versionstring)
2127 rollback.append(
2128 lambda: utils.RunCmd(["rm", "-f", pathutils.INTENT_TO_UPGRADE]))
2129
2130 ToStdoutAndLoginfo("Draining queue")
2131 client = GetClient()
2132 client.SetQueueDrainFlag(True)
2133
2134 rollback.append(lambda: GetClient().SetQueueDrainFlag(False))
2135
2136 if utils.SimpleRetry(0, _GetRunning,
2137 constants.UPGRADE_QUEUE_POLL_INTERVAL,
2138 constants.UPGRADE_QUEUE_DRAIN_TIMEOUT):
2139 ToStderr("Failed to completely empty the queue.")
2140 return (False, rollback)
2141
2142 ToStdoutAndLoginfo("Pausing the watcher for one hour.")
2143 rollback.append(lambda: GetClient().SetWatcherPause(None))
2144 GetClient().SetWatcherPause(time.time() + 60 * 60)
2145
2146 ToStdoutAndLoginfo("Stopping daemons on master node.")
2147 if not _RunCommandAndReport([pathutils.DAEMON_UTIL, "stop-all"]):
2148 return (False, rollback)
2149
2150 if not _VerifyVersionInstalled(versionstring):
2151 utils.RunCmd([pathutils.DAEMON_UTIL, "start-all"])
2152 return (False, rollback)
2153
2154 ToStdoutAndLoginfo("Stopping daemons everywhere.")
2155 rollback.append(lambda: _VerifyCommand([pathutils.DAEMON_UTIL, "start-all"]))
2156 badnodes = _VerifyCommand([pathutils.DAEMON_UTIL, "stop-all"])
2157 if badnodes:
2158 ToStderr("Failed to stop daemons on %s." % (", ".join(badnodes),))
2159 return (False, rollback)
2160
2161 backuptar = os.path.join(pathutils.BACKUP_DIR, "ganeti%d.tar" % time.time())
2162 ToStdoutAndLoginfo("Backing up configuration as %s", backuptar)
2163 if not _RunCommandAndReport(["mkdir", "-p", pathutils.BACKUP_DIR]):
2164 return (False, rollback)
2165
2166 # Create the archive in a safe manner, as it contains sensitive
2167 # information.
2168 (_, tmp_name) = tempfile.mkstemp(prefix=backuptar, dir=pathutils.BACKUP_DIR)
2169 if not _RunCommandAndReport(["tar", "-cf", tmp_name,
2170 "--exclude=queue/archive",
2171 pathutils.DATA_DIR]):
2172 return (False, rollback)
2173
2174 os.rename(tmp_name, backuptar)
2175 return (True, rollback)
2176
2177
2178 def _VersionSpecificDowngrade():
2179 """
2180 Perform any additional downrade tasks that are version specific
2181 and need to be done just after the configuration downgrade. This
2182 function needs to be idempotent, so that it can be redone if the
2183 downgrade procedure gets interrupted after changing the
2184 configuration.
2185
2186 Note that this function has to be reset with every version bump.
2187
2188 @return: True upon success
2189 """
2190 ToStdoutAndLoginfo("Performing version-specific downgrade tasks.")
2191
2192 return True
2193
2194
2195 def _SwitchVersionAndConfig(versionstring, downgrade):
2196 """
2197 Switch to the new Ganeti version and change the configuration,
2198 in correct order.
2199
2200 @type versionstring: string
2201 @param versionstring: the version to change to
2202 @type downgrade: bool
2203 @param downgrade: True, if the configuration should be downgraded
2204 @rtype: (bool, list)
2205 @return: tupe of a bool indicating success, and a list of
2206 additional rollback tasks
2207
2208 """
2209 rollback = []
2210 if downgrade:
2211 ToStdoutAndLoginfo("Downgrading configuration")
2212 if not _RunCommandAndReport([pathutils.CFGUPGRADE, "--downgrade", "-f"]):
2213 return (False, rollback)
2214 # Note: version specific downgrades need to be done before switching
2215 # binaries, so that we still have the knowledgeable binary if the downgrade
2216 # process gets interrupted at this point.
2217 if not _VersionSpecificDowngrade():
2218 return (False, rollback)
2219
2220 # Configuration change is the point of no return. From then onwards, it is
2221 # safer to push through the up/dowgrade than to try to roll it back.
2222
2223 ToStdoutAndLoginfo("Switching to version %s on all nodes", versionstring)
2224 rollback.append(lambda: _SetGanetiVersion(constants.DIR_VERSION))
2225 badnodes = _SetGanetiVersion(versionstring)
2226 if badnodes:
2227 ToStderr("Failed to switch to Ganeti version %s on nodes %s"
2228 % (versionstring, ", ".join(badnodes)))
2229 if not downgrade:
2230 return (False, rollback)
2231
2232 # Now that we have changed to the new version of Ganeti we should
2233 # not communicate over luxi any more, as luxi might have changed in
2234 # incompatible ways. Therefore, manually call the corresponding ganeti
2235 # commands using their canonical (version independent) path.
2236
2237 if not downgrade:
2238 ToStdoutAndLoginfo("Upgrading configuration")
2239 if not _RunCommandAndReport([pathutils.CFGUPGRADE, "-f"]):
2240 return (False, rollback)
2241
2242 return (True, rollback)
2243
2244
2245 def _UpgradeAfterConfigurationChange(oldversion):
2246 """
2247 Carry out the upgrade actions necessary after switching to the new
2248 Ganeti version and updating the configuration.
2249
2250 As this part is run at a time where the new version of Ganeti is already
2251 running, no communication should happen via luxi, as this is not a stable
2252 interface. Also, as the configuration change is the point of no return,
2253 all actions are pushed trough, even if some of them fail.
2254
2255 @param oldversion: the version the upgrade started from
2256 @type oldversion: string
2257 @rtype: int
2258 @return: the intended return value
2259
2260 """
2261 returnvalue = 0
2262
2263 ToStdoutAndLoginfo("Ensuring directories everywhere.")
2264 badnodes = _VerifyCommand([pathutils.ENSURE_DIRS])
2265 if badnodes:
2266 ToStderr("Warning: failed to ensure directories on %s." %
2267 (", ".join(badnodes)))
2268 returnvalue = 1
2269
2270 ToStdoutAndLoginfo("Starting daemons everywhere.")
2271 badnodes = _VerifyCommand([pathutils.DAEMON_UTIL, "start-all"])
2272 if badnodes:
2273 ToStderr("Warning: failed to start daemons on %s." % (", ".join(badnodes),))
2274 returnvalue = 1
2275
2276 ToStdoutAndLoginfo("Redistributing the configuration.")
2277 if not _RunCommandAndReport(["gnt-cluster", "redist-conf", "--yes-do-it"]):
2278 returnvalue = 1
2279
2280 ToStdoutAndLoginfo("Restarting daemons everywhere.")
2281 badnodes = _VerifyCommand([pathutils.DAEMON_UTIL, "stop-all"])
2282 badnodes.extend(_VerifyCommand([pathutils.DAEMON_UTIL, "start-all"]))
2283 if badnodes:
2284 ToStderr("Warning: failed to start daemons on %s." %
2285 (", ".join(list(set(badnodes))),))
2286 returnvalue = 1
2287
2288 ToStdoutAndLoginfo("Undraining the queue.")
2289 if not _RunCommandAndReport(["gnt-cluster", "queue", "undrain"]):
2290 returnvalue = 1
2291
2292 _RunCommandAndReport(["rm", "-f", pathutils.INTENT_TO_UPGRADE])
2293
2294 ToStdoutAndLoginfo("Running post-upgrade hooks")
2295 if not _RunCommandAndReport([pathutils.POST_UPGRADE, oldversion]):
2296 returnvalue = 1
2297
2298 ToStdoutAndLoginfo("Unpausing the watcher.")
2299 if not _RunCommandAndReport(["gnt-cluster", "watcher", "continue"]):
2300 returnvalue = 1
2301
2302 ToStdoutAndLoginfo("Verifying cluster.")
2303 if not _RunCommandAndReport(["gnt-cluster", "verify"]):
2304 returnvalue = 1
2305
2306 return returnvalue
2307
2308
2309 def UpgradeGanetiCommand(opts, args):
2310 """Upgrade a cluster to a new ganeti version.
2311
2312 @param opts: the command line options selected by the user
2313 @type args: list
2314 @param args: should be an empty list
2315 @rtype: int
2316 @return: the desired exit code
2317
2318 """
2319 if ((not opts.resume and opts.to is None)
2320 or (opts.resume and opts.to is not None)):
2321 ToStderr("Precisely one of the options --to and --resume"
2322 " has to be given")
2323 return 1
2324
2325 # If we're not told to resume, verify there is no upgrade
2326 # in progress.
2327 if not opts.resume:
2328 oldversion, versionstring = _ReadIntentToUpgrade()
2329 if versionstring is not None:
2330 # An upgrade is going on; verify whether the target matches
2331 if versionstring == opts.to:
2332 ToStderr("An upgrade is already in progress. Target version matches,"
2333 " resuming.")
2334 opts.resume = True
2335 opts.to = None
2336 else:
2337 ToStderr("An upgrade from %s to %s is in progress; use --resume to"
2338 " finish it first" % (oldversion, versionstring))
2339 return 1
2340
2341 utils.SetupLogging(pathutils.LOG_COMMANDS, 'gnt-cluster upgrade', debug=1)
2342
2343 oldversion = constants.RELEASE_VERSION
2344
2345 if opts.resume:
2346 ssconf.CheckMaster(False)
2347 oldversion, versionstring = _ReadIntentToUpgrade()
2348 if versionstring is None:
2349 return 0
2350 version = utils.version.ParseVersion(versionstring)
2351 if version is None:
2352 return 1
2353 configversion = _GetConfigVersion()
2354 if configversion is None:
2355 return 1
2356 # If the upgrade we resume was an upgrade between compatible
2357 # versions (like 2.10.0 to 2.10.1), the correct configversion
2358 # does not guarantee that the config has been updated.
2359 # However, in the case of a compatible update with the configuration
2360 # not touched, we are running a different dirversion with the same
2361 # config version.
2362 config_already_modified = \
2363 (utils.IsCorrectConfigVersion(version, configversion) and
2364 not (versionstring != constants.DIR_VERSION and
2365 configversion == (constants.CONFIG_MAJOR, constants.CONFIG_MINOR,
2366 constants.CONFIG_REVISION)))
2367 if not config_already_modified:
2368 # We have to start from the beginning; however, some daemons might have
2369 # already been stopped, so the only way to get into a well-defined state
2370 # is by starting all daemons again.
2371 _VerifyCommand([pathutils.DAEMON_UTIL, "start-all"])
2372 else:
2373 versionstring = opts.to
2374 config_already_modified = False
2375 version = utils.version.ParseVersion(versionstring)
2376 if version is None:
2377 ToStderr("Could not parse version string %s" % versionstring)
2378 return 1
2379
2380 msg = utils.version.UpgradeRange(version)
2381 if msg is not None:
2382 ToStderr("Cannot upgrade to %s: %s" % (versionstring, msg))
2383 return 1
2384
2385 if not config_already_modified:
2386 success, rollback = _UpgradeBeforeConfigurationChange(versionstring)
2387 if not success:
2388 _ExecuteCommands(rollback)
2389 return 1
2390 else:
2391 rollback = []
2392
2393 downgrade = utils.version.ShouldCfgdowngrade(version)
2394
2395 success, additionalrollback = \
2396 _SwitchVersionAndConfig(versionstring, downgrade)
2397 if not success:
2398 rollback.extend(additionalrollback)
2399 _ExecuteCommands(rollback)
2400 return 1
2401
2402 return _UpgradeAfterConfigurationChange(oldversion)
2403
2404
2405 commands = {
2406 "init": (
2407 InitCluster, [ArgHost(min=1, max=1)],
2408 [BACKEND_OPT, CP_SIZE_OPT, ENABLED_HV_OPT, GLOBAL_FILEDIR_OPT,
2409 HVLIST_OPT, MAC_PREFIX_OPT, MASTER_NETDEV_OPT, MASTER_NETMASK_OPT,
2410 NIC_PARAMS_OPT, NOMODIFY_ETCHOSTS_OPT, NOMODIFY_SSH_SETUP_OPT,
2411 SECONDARY_IP_OPT, VG_NAME_OPT, MAINTAIN_NODE_HEALTH_OPT, UIDPOOL_OPT,
2412 DRBD_HELPER_OPT, DEFAULT_IALLOCATOR_OPT, DEFAULT_IALLOCATOR_PARAMS_OPT,
2413 PRIMARY_IP_VERSION_OPT, PREALLOC_WIPE_DISKS_OPT, NODE_PARAMS_OPT,
2414 GLOBAL_SHARED_FILEDIR_OPT, USE_EXTERNAL_MIP_SCRIPT, DISK_PARAMS_OPT,
2415 HV_STATE_OPT, DISK_STATE_OPT, ENABLED_DISK_TEMPLATES_OPT,
2416 IPOLICY_STD_SPECS_OPT, GLOBAL_GLUSTER_FILEDIR_OPT, INSTALL_IMAGE_OPT,
2417 ZEROING_IMAGE_OPT, COMPRESSION_TOOLS_OPT,
2418 ENABLED_USER_SHUTDOWN_OPT,
2419 ]
2420 + INSTANCE_POLICY_OPTS + SPLIT_ISPECS_OPTS,
2421 "[opts...] <cluster_name>", "Initialises a new cluster configuration"),
2422 "destroy": (
2423 DestroyCluster, ARGS_NONE, [YES_DOIT_OPT],
2424 "", "Destroy cluster"),
2425 "rename": (
2426 RenameCluster, [ArgHost(min=1, max=1)],
2427 [FORCE_OPT, DRY_RUN_OPT],
2428 "<new_name>",
2429 "Renames the cluster"),
2430 "redist-conf": (
2431 RedistributeConfig, ARGS_NONE, SUBMIT_OPTS +
2432 [DRY_RUN_OPT, PRIORITY_OPT, FORCE_DISTRIBUTION],
2433 "", "Forces a push of the configuration file and ssconf files"
2434 " to the nodes in the cluster"),
2435 "verify": (
2436 VerifyCluster, ARGS_NONE,
2437 [VERBOSE_OPT, DEBUG_SIMERR_OPT, ERROR_CODES_OPT, NONPLUS1_OPT,
2438 DRY_RUN_OPT, PRIORITY_OPT, NODEGROUP_OPT, IGNORE_ERRORS_OPT,
2439 VERIFY_CLUTTER_OPT],
2440 "", "Does a check on the cluster configuration"),
2441 "verify-disks": (
2442 VerifyDisks, ARGS_NONE, [PRIORITY_OPT],
2443 "", "Does a check on the cluster disk status"),
2444 "repair-disk-sizes": (
2445 RepairDiskSizes, ARGS_MANY_INSTANCES, [DRY_RUN_OPT, PRIORITY_OPT],
2446 "[instance...]", "Updates mismatches in recorded disk sizes"),
2447 "master-failover": (
2448 MasterFailover, ARGS_NONE, [NOVOTING_OPT, FORCE_FAILOVER],
2449 "", "Makes the current node the master"),
2450 "master-ping": (
2451 MasterPing, ARGS_NONE, [],
2452 "", "Checks if the master is alive"),
2453 "version": (
2454 ShowClusterVersion, ARGS_NONE, [],
2455 "", "Shows the cluster version"),
2456 "getmaster": (
2457 ShowClusterMaster, ARGS_NONE, [],
2458 "", "Shows the cluster master"),
2459 "copyfile": (
2460 ClusterCopyFile, [ArgFile(min=1, max=1)],
2461 [NODE_LIST_OPT, USE_REPL_NET_OPT, NODEGROUP_OPT],
2462 "[-n node...] <filename>", "Copies a file to all (or only some) nodes"),
2463 "command": (
2464 RunClusterCommand, [ArgCommand(min=1)],
2465 [NODE_LIST_OPT, NODEGROUP_OPT, SHOW_MACHINE_OPT, FAILURE_ONLY_OPT],
2466 "[-n node...] <command>", "Runs a command on all (or only some) nodes"),
2467 "info": (
2468 ShowClusterConfig, ARGS_NONE, [ROMAN_OPT],
2469 "[--roman]", "Show cluster configuration"),
2470 "list-tags": (
2471 ListTags, ARGS_NONE, [], "", "List the tags of the cluster"),
2472 "add-tags": (
2473 AddTags, [ArgUnknown()], [TAG_SRC_OPT, PRIORITY_OPT] + SUBMIT_OPTS,
2474 "tag...", "Add tags to the cluster"),
2475 "remove-tags": (
2476 RemoveTags, [ArgUnknown()], [TAG_SRC_OPT, PRIORITY_OPT] + SUBMIT_OPTS,
2477 "tag...", "Remove tags from the cluster"),
2478 "search-tags": (
2479 SearchTags, [ArgUnknown(min=1, max=1)], [PRIORITY_OPT], "",
2480 "Searches the tags on all objects on"
2481 " the cluster for a given pattern (regex)"),
2482 "queue": (
2483 QueueOps,
2484 [ArgChoice(min=1, max=1, choices=["drain", "undrain", "info"])],
2485 [], "drain|undrain|info", "Change queue properties"),
2486 "watcher": (
2487 WatcherOps,
2488 [ArgChoice(min=1, max=1, choices=["pause", "continue", "info"]),
2489 ArgSuggest(min=0, max=1, choices=["30m", "1h", "4h"])],
2490 [],
2491 "{pause <timespec>|continue|info}", "Change watcher properties"),
2492 "modify": (
2493 SetClusterParams, ARGS_NONE,
2494 [FORCE_OPT,
2495 BACKEND_OPT, CP_SIZE_OPT, RQL_OPT, MAX_TRACK_OPT, INSTALL_IMAGE_OPT,
2496 INSTANCE_COMMUNICATION_NETWORK_OPT, ENABLED_HV_OPT, HVLIST_OPT,
2497 MAC_PREFIX_OPT, MASTER_NETDEV_OPT, MASTER_NETMASK_OPT, NIC_PARAMS_OPT,
2498 VG_NAME_OPT, MAINTAIN_NODE_HEALTH_OPT, UIDPOOL_OPT, ADD_UIDS_OPT,
2499 REMOVE_UIDS_OPT, DRBD_HELPER_OPT, DEFAULT_IALLOCATOR_OPT,
2500 DEFAULT_IALLOCATOR_PARAMS_OPT, RESERVED_LVS_OPT, DRY_RUN_OPT, PRIORITY_OPT,
2501 PREALLOC_WIPE_DISKS_OPT, NODE_PARAMS_OPT, USE_EXTERNAL_MIP_SCRIPT,
2502 DISK_PARAMS_OPT, HV_STATE_OPT, DISK_STATE_OPT] + SUBMIT_OPTS +
2503 [ENABLED_DISK_TEMPLATES_OPT, IPOLICY_STD_SPECS_OPT, MODIFY_ETCHOSTS_OPT,
2504 ENABLED_USER_SHUTDOWN_OPT] +
2505 INSTANCE_POLICY_OPTS +
2506 [GLOBAL_FILEDIR_OPT, GLOBAL_SHARED_FILEDIR_OPT, ZEROING_IMAGE_OPT,
2507 COMPRESSION_TOOLS_OPT] +
2508 [ENABLED_DATA_COLLECTORS_OPT, DATA_COLLECTOR_INTERVAL_OPT],
2509 "[opts...]",
2510 "Alters the parameters of the cluster"),
2511 "renew-crypto": (
2512 RenewCrypto, ARGS_NONE,
2513 [NEW_CLUSTER_CERT_OPT, NEW_RAPI_CERT_OPT, RAPI_CERT_OPT,
2514 NEW_CONFD_HMAC_KEY_OPT, FORCE_OPT,
2515 NEW_CLUSTER_DOMAIN_SECRET_OPT, CLUSTER_DOMAIN_SECRET_OPT,
2516 NEW_SPICE_CERT_OPT, SPICE_CERT_OPT, SPICE_CACERT_OPT,
2517 NEW_NODE_CERT_OPT, NEW_SSH_KEY_OPT, NOSSH_KEYCHECK_OPT,
2518 VERBOSE_OPT],
2519 "[opts...]",
2520 "Renews cluster certificates, keys and secrets"),
2521 "epo": (
2522 Epo, [ArgUnknown()],
2523 [FORCE_OPT, ON_OPT, GROUPS_OPT, ALL_OPT, OOB_TIMEOUT_OPT,
2524 SHUTDOWN_TIMEOUT_OPT, POWER_DELAY_OPT],
2525 "[opts...] [args]",
2526 "Performs an emergency power-off on given args"),
2527 "activate-master-ip": (
2528 ActivateMasterIp, ARGS_NONE, [], "", "Activates the master IP"),
2529 "deactivate-master-ip": (
2530 DeactivateMasterIp, ARGS_NONE, [CONFIRM_OPT], "",
2531 "Deactivates the master IP"),
2532 "show-ispecs-cmd": (
2533 ShowCreateCommand, ARGS_NONE, [], "",
2534 "Show the command line to re-create the cluster"),
2535 "upgrade": (
2536 UpgradeGanetiCommand, ARGS_NONE, [TO_OPT, RESUME_OPT], "",
2537 "Upgrade (or downgrade) to a new Ganeti version"),
2538 }
2539
2540
2541 #: dictionary with aliases for commands
2542 aliases = {
2543 "masterfailover": "master-failover",
2544 "show": "info",
2545 }
2546
2547
2548 def Main():
2549 return GenericMain(commands, override={"tag_type": constants.TAG_CLUSTER},
2550 aliases=aliases)