gnt-cluster 14.2 KB
Newer Older
Iustin Pop's avatar
Iustin Pop committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
#!/usr/bin/python
#

# Copyright (C) 2006, 2007 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


import sys
from optparse import make_option
import pprint

from ganeti.cli import *
from ganeti import opcodes
28
from ganeti import constants
29
from ganeti import errors
30
from ganeti import utils
Iustin Pop's avatar
Iustin Pop committed
31
32
33
34
35
36
37
38
39
40


def InitCluster(opts, args):
  """Initialize the cluster.

  Args:
    opts - class with options as members
    args - list of arguments, expected to be [clustername]

  """
41
42
43
44
45
46
47
48
  if not opts.lvm_storage and opts.vg_name:
    print ("Options --no-lvm-storage and --vg-name conflict.")
    return 1

  vg_name = opts.vg_name
  if opts.lvm_storage and not opts.vg_name:
    vg_name = constants.DEFAULT_VG

Iustin Pop's avatar
Iustin Pop committed
49
50
51
  op = opcodes.OpInitCluster(cluster_name=args[0],
                             secondary_ip=opts.secondary_ip,
                             hypervisor_type=opts.hypervisor_type,
52
                             vg_name=vg_name,
Iustin Pop's avatar
Iustin Pop committed
53
                             mac_prefix=opts.mac_prefix,
54
                             def_bridge=opts.def_bridge,
55
56
                             master_netdev=opts.master_netdev,
                             file_storage_dir=opts.file_storage_dir)
Iustin Pop's avatar
Iustin Pop committed
57
58
59
60
61
62
63
64
65
  SubmitOpCode(op)
  return 0


def DestroyCluster(opts, args):
  """Destroy the cluster.

  Args:
    opts - class with options as members
66

Iustin Pop's avatar
Iustin Pop committed
67
68
69
  """
  if not opts.yes_do_it:
    print ("Destroying a cluster is irreversibly. If you really want destroy"
Iustin Pop's avatar
Iustin Pop committed
70
           " this cluster, supply the --yes-do-it option.")
Iustin Pop's avatar
Iustin Pop committed
71
72
73
74
75
76
77
    return 1

  op = opcodes.OpDestroyCluster()
  SubmitOpCode(op)
  return 0


78
79
80
81
82
83
84
85
86
87
88
89
90
91
def RenameCluster(opts, args):
  """Rename the cluster.

  Args:
    opts - class with options as members, we use force only
    args - list of arguments, expected to be [new_name]

  """
  name = args[0]
  if not opts.force:
    usertext = ("This will rename the cluster to '%s'. If you are connected"
                " over the network to the cluster name, the operation is very"
                " dangerous as the IP address will be removed from the node"
                " and the change may not go through. Continue?") % name
92
    if not AskUser(usertext):
93
94
95
96
97
98
99
      return 1

  op = opcodes.OpRenameCluster(name=name)
  SubmitOpCode(op)
  return 0


Iustin Pop's avatar
Iustin Pop committed
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
def ShowClusterVersion(opts, args):
  """Write version of ganeti software to the standard output.

  Args:
    opts - class with options as members

  """
  op = opcodes.OpQueryClusterInfo()
  result = SubmitOpCode(op)
  print ("Software version: %s" % result["software_version"])
  print ("Internode protocol: %s" % result["protocol_version"])
  print ("Configuration format: %s" % result["config_version"])
  print ("OS api version: %s" % result["os_api_version"])
  print ("Export interface: %s" % result["export_version"])
  return 0


def ShowClusterMaster(opts, args):
  """Write name of master node to the standard output.

  Args:
    opts - class with options as members

  """
  op = opcodes.OpQueryClusterInfo()
  result = SubmitOpCode(op)
  print (result["master"])
  return 0


def ShowClusterConfig(opts, args):
  """Shows cluster information.

  """
  op = opcodes.OpQueryClusterInfo()
  result = SubmitOpCode(op)

  print ("Cluster name: %s" % result["name"])

  print ("Master node: %s" % result["master"])

141
142
  print ("Architecture (this node): %s (%s)" %
         (result["architecture"][0], result["architecture"][1]))
Iustin Pop's avatar
Iustin Pop committed
143

144
145
  print ("Cluster hypervisor: %s" % result["hypervisor_type"])

Iustin Pop's avatar
Iustin Pop committed
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
  return 0


def ClusterCopyFile(opts, args):
  """Copy a file from master to some nodes.

  Args:
    opts - class with options as members
    args - list containing a single element, the file name
  Opts used:
    nodes - list containing the name of target nodes; if empty, all nodes

  """
  op = opcodes.OpClusterCopyFile(filename=args[0], nodes=opts.nodes)
  SubmitOpCode(op)
  return 0


def RunClusterCommand(opts, args):
  """Run a command on some nodes.

  Args:
    opts - class with options as members
    args - the command list as a list
  Opts used:
    nodes: list containing the name of target nodes; if empty, all nodes

  """
  command = " ".join(args)
  nodes = opts.nodes
  op = opcodes.OpRunClusterCommand(command=command, nodes=nodes)
  result = SubmitOpCode(op)
Iustin Pop's avatar
Iustin Pop committed
178
  for node, output, exit_code in result:
Iustin Pop's avatar
Iustin Pop committed
179
180
181
182
183
184
185
186
187
188
189
190
191
    print ("------------------------------------------------")
    print ("node: %s" % node)
    print ("%s" % output)
    print ("return code = %s" % exit_code)


def VerifyCluster(opts, args):
  """Verify integrity of cluster, performing various test on nodes.

  Args:
    opts - class with options as members

  """
Iustin Pop's avatar
Iustin Pop committed
192
  skip_checks = []
193
194
195
  if opts.skip_nplusone_mem:
    skip_checks.append(constants.VERIFY_NPLUSONE_MEM)
  op = opcodes.OpVerifyCluster(skip_checks=skip_checks)
Iustin Pop's avatar
Iustin Pop committed
196
197
198
199
  result = SubmitOpCode(op)
  return result


200
201
202
203
204
205
206
207
208
def VerifyDisks(opts, args):
  """Verify integrity of cluster disks.

  Args:
    opts - class with options as members

  """
  op = opcodes.OpVerifyDisks()
  result = SubmitOpCode(op)
209
  if not isinstance(result, tuple) or len(result) != 4:
210
211
    raise errors.ProgrammerError("Unknown result type for OpVerifyDisks")

212
213
  nodes, nlvm, instances, missing = result

214
215
216
217
218
  if nodes:
    print "Nodes unreachable or with bad data:"
    for name in nodes:
      print "\t%s" % name
  retcode = constants.EXIT_SUCCESS
219
220
221
222
223
224
225
226

  if nlvm:
    for node, text in nlvm.iteritems():
      print ("Error on node %s: LVM error: %s" %
             (node, text[-400:].encode('string_escape')))
      retcode |= 1
      print "You need to fix these nodes first before fixing instances"

227
228
  if instances:
    for iname in instances:
229
230
      if iname in missing:
        continue
231
232
233
234
235
236
237
      op = opcodes.OpActivateInstanceDisks(instance_name=iname)
      try:
        print "Activating disks for instance '%s'" % iname
        SubmitOpCode(op)
      except errors.GenericError, err:
        nret, msg = FormatError(err)
        retcode |= nret
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
        print >> sys.stderr, ("Error activating disks for instance %s: %s" %
                              (iname, msg))

  if missing:
    for iname, ival in missing.iteritems():
      all_missing = utils.all(ival, lambda x: x[0] in nlvm)
      if all_missing:
        print ("Instance %s cannot be verified as it lives on"
               " broken nodes" % iname)
      else:
        print "Instance %s has missing logical volumes:" % iname
        ival.sort()
        for node, vol in ival:
          if node in nlvm:
            print ("\tbroken node %s /dev/xenvg/%s" % (node, vol))
          else:
            print ("\t%s /dev/xenvg/%s" % (node, vol))
    print ("You need to run replace_disks for all the above"
           " instances, if this message persist after fixing nodes.")
    retcode |= 1
258
259
260
261

  return retcode


Iustin Pop's avatar
Iustin Pop committed
262
263
264
265
266
267
268
269
270
271
272
273
def MasterFailover(opts, args):
  """Failover the master node.

  This command, when run on a non-master node, will cause the current
  master to cease being master, and the non-master to become new
  master.

  """
  op = opcodes.OpMasterFailover()
  SubmitOpCode(op)


Iustin Pop's avatar
Iustin Pop committed
274
275
276
277
278
279
280
281
282
283
284
285
286
287
def SearchTags(opts, args):
  """Searches the tags on all the cluster.

  """
  op = opcodes.OpSearchTags(pattern=args[0])
  result = SubmitOpCode(op)
  if not result:
    return 1
  result = list(result)
  result.sort()
  for path, tag in result:
    print "%s %s" % (path, tag)


288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
def SetClusterParams(opts, args):
  """Modify the cluster.

  Args:
    opts - class with options as members

  """
  if not (not opts.lvm_storage or opts.vg_name):
    print "Please give at least one of the parameters."
    return 1

  vg_name = opts.vg_name
  if not opts.lvm_storage and opts.vg_name:
    print ("Options --no-lvm-storage and --vg-name conflict.")
    return 1

  op = opcodes.OpSetClusterParams(vg_name=opts.vg_name)
  SubmitOpCode(op)
  return 0


Iustin Pop's avatar
Iustin Pop committed
309
310
311
# this is an option common to more than one command, so we declare
# it here and reuse it
node_option = make_option("-n", "--node", action="append", dest="nodes",
312
313
314
                          help="Node to copy to (if not given, all nodes),"
                               " can be given multiple times",
                          metavar="<node>", default=[])
Iustin Pop's avatar
Iustin Pop committed
315
316
317
318
319
320
321
322
323
324

commands = {
  'init': (InitCluster, ARGS_ONE,
           [DEBUG_OPT,
            make_option("-s", "--secondary-ip", dest="secondary_ip",
                        help="Specify the secondary ip for this node;"
                        " if given, the entire cluster must have secondary"
                        " addresses",
                        metavar="ADDRESS", default=None),
            make_option("-t", "--hypervisor-type", dest="hypervisor_type",
325
326
327
328
329
                        help="Specify the hypervisor type "
                        "(xen-3.0, fake, xen-hvm-3.1)",
                        metavar="TYPE", choices=["xen-3.0",
                                                 "fake",
                                                 "xen-hvm-3.1"],
Iustin Pop's avatar
Iustin Pop committed
330
331
332
333
334
335
336
337
338
339
                        default="xen-3.0",),
            make_option("-m", "--mac-prefix", dest="mac_prefix",
                        help="Specify the mac prefix for the instance IP"
                        " addresses, in the format XX:XX:XX",
                        metavar="PREFIX",
                        default="aa:00:00",),
            make_option("-g", "--vg-name", dest="vg_name",
                        help="Specify the volume group name "
                        " (cluster-wide) for disk allocation [xenvg]",
                        metavar="VG",
340
                        default=None,),
Iustin Pop's avatar
Iustin Pop committed
341
342
            make_option("-b", "--bridge", dest="def_bridge",
                        help="Specify the default bridge name (cluster-wide)"
343
344
                          " to connect the instances to [%s]" %
                          constants.DEFAULT_BRIDGE,
Iustin Pop's avatar
Iustin Pop committed
345
                        metavar="BRIDGE",
346
                        default=constants.DEFAULT_BRIDGE,),
347
348
            make_option("--master-netdev", dest="master_netdev",
                        help="Specify the node interface (cluster-wide)"
349
350
                          " on which the master IP address will be added "
                          " [%s]" % constants.DEFAULT_BRIDGE,
351
                        metavar="NETDEV",
352
                        default=constants.DEFAULT_BRIDGE,),
353
354
355
356
357
358
            make_option("--file-storage-dir", dest="file_storage_dir",
                        help="Specify the default directory (cluster-wide)"
                             " for storing the file-based disks [%s]" %
                             constants.DEFAULT_FILE_STORAGE_DIR,
                        metavar="DIR",
                        default=constants.DEFAULT_FILE_STORAGE_DIR,),
359
360
361
362
            make_option("--no-lvm-storage", dest="lvm_storage",
                        help="No support for lvm based instances"
                             " (cluster-wide)",
                        action="store_false", default=True,),
Iustin Pop's avatar
Iustin Pop committed
363
            ],
364
           "[opts...] <cluster_name>",
Iustin Pop's avatar
Iustin Pop committed
365
366
367
368
369
370
371
           "Initialises a new cluster configuration"),
  'destroy': (DestroyCluster, ARGS_NONE,
              [DEBUG_OPT,
               make_option("--yes-do-it", dest="yes_do_it",
                           help="Destroy cluster",
                           action="store_true"),
              ],
372
              "", "Destroy cluster"),
373
  'rename': (RenameCluster, ARGS_ONE, [DEBUG_OPT, FORCE_OPT],
374
               "<new_name>",
375
               "Renames the cluster"),
376
377
378
379
380
381
  'verify': (VerifyCluster, ARGS_NONE, [DEBUG_OPT,
             make_option("--no-nplus1-mem", dest="skip_nplusone_mem",
                         help="Skip N+1 memory redundancy tests",
                         action="store_true",
                         default=False,),
             ],
382
             "", "Does a check on the cluster configuration"),
383
  'verify-disks': (VerifyDisks, ARGS_NONE, [DEBUG_OPT],
384
                   "", "Does a check on the cluster disk status"),
Iustin Pop's avatar
Iustin Pop committed
385
  'masterfailover': (MasterFailover, ARGS_NONE, [DEBUG_OPT],
386
                     "", "Makes the current node the master"),
Iustin Pop's avatar
Iustin Pop committed
387
  'version': (ShowClusterVersion, ARGS_NONE, [DEBUG_OPT],
388
              "", "Shows the cluster version"),
Iustin Pop's avatar
Iustin Pop committed
389
  'getmaster': (ShowClusterMaster, ARGS_NONE, [DEBUG_OPT],
390
                "", "Shows the cluster master"),
Iustin Pop's avatar
Iustin Pop committed
391
  'copyfile': (ClusterCopyFile, ARGS_ONE, [DEBUG_OPT, node_option],
392
               "[-n node...] <filename>",
Iustin Pop's avatar
Iustin Pop committed
393
394
               "Copies a file to all (or only some) nodes"),
  'command': (RunClusterCommand, ARGS_ATLEAST(1), [DEBUG_OPT, node_option],
395
              "[-n node...] <command>",
Iustin Pop's avatar
Iustin Pop committed
396
397
              "Runs a command on all (or only some) nodes"),
  'info': (ShowClusterConfig, ARGS_NONE, [DEBUG_OPT],
398
                 "", "Show cluster configuration"),
399
  'list-tags': (ListTags, ARGS_NONE,
400
                [DEBUG_OPT], "", "List the tags of the cluster"),
401
  'add-tags': (AddTags, ARGS_ANY, [DEBUG_OPT, TAG_SRC_OPT],
402
               "tag...", "Add tags to the cluster"),
403
  'remove-tags': (RemoveTags, ARGS_ANY, [DEBUG_OPT, TAG_SRC_OPT],
404
                  "tag...", "Remove tags from the cluster"),
Iustin Pop's avatar
Iustin Pop committed
405
  'search-tags': (SearchTags, ARGS_ONE,
406
                  [DEBUG_OPT], "", "Searches the tags on all objects on"
Iustin Pop's avatar
Iustin Pop committed
407
                  " the cluster for a given pattern (regex)"),
408
409
410
411
412
413
414
415
416
417
418
419
420
421
  'modify': (SetClusterParams, ARGS_NONE,
             [DEBUG_OPT,
              make_option("-g", "--vg-name", dest="vg_name",
                          help="Specify the volume group name "
                          " (cluster-wide) for disk allocation "
                          "and enable lvm based storage",
                          metavar="VG",),
              make_option("--no-lvm-storage", dest="lvm_storage",
                          help="Disable support for lvm based instances"
                               " (cluster-wide)",
                          action="store_false", default=True,),
              ],
             "[opts...]",
             "Alters the parameters of the cluster"),
Iustin Pop's avatar
Iustin Pop committed
422
423
424
  }

if __name__ == '__main__':
425
  sys.exit(GenericMain(commands, override={"tag_type": constants.TAG_CLUSTER}))