Statistics
| Branch: | Tag: | Revision:

root / lib / client / gnt_group.py @ d04c9d45

History | View | Annotate | Download (10.2 kB)

1
#
2
#
3

    
4
# Copyright (C) 2010, 2011, 2012 Google Inc.
5
#
6
# This program is free software; you can redistribute it and/or modify
7
# it under the terms of the GNU General Public License as published by
8
# the Free Software Foundation; either version 2 of the License, or
9
# (at your option) any later version.
10
#
11
# This program is distributed in the hope that it will be useful, but
12
# WITHOUT ANY WARRANTY; without even the implied warranty of
13
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
# General Public License for more details.
15
#
16
# You should have received a copy of the GNU General Public License
17
# along with this program; if not, write to the Free Software
18
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19
# 02110-1301, USA.
20

    
21
"""Node group related commands"""
22

    
23
# pylint: disable=W0401,W0614
24
# W0401: Wildcard import ganeti.cli
25
# W0614: Unused import %s from wildcard import (since we need cli)
26

    
27
from ganeti.cli import *
28
from ganeti import constants
29
from ganeti import objects
30
from ganeti import opcodes
31
from ganeti import utils
32

    
33

    
34
#: default list of fields for L{ListGroups}
35
_LIST_DEF_FIELDS = ["name", "node_cnt", "pinst_cnt", "alloc_policy", "ndparams"]
36

    
37

    
38
_ENV_OVERRIDE = frozenset(["list"])
39

    
40

    
41
def AddGroup(opts, args):
42
  """Add a node group to the cluster.
43

44
  @param opts: the command line options selected by the user
45
  @type args: list
46
  @param args: a list of length 1 with the name of the group to create
47
  @rtype: int
48
  @return: the desired exit code
49

50
  """
51
  ipolicy = \
52
    objects.CreateIPolicyFromOpts(ispecs_mem_size=opts.ispecs_mem_size,
53
                                  ispecs_cpu_count=opts.ispecs_cpu_count,
54
                                  ispecs_disk_count=opts.ispecs_disk_count,
55
                                  ispecs_disk_size=opts.ispecs_disk_size,
56
                                  ispecs_nic_count=opts.ispecs_nic_count,
57
                                  group_ipolicy=True)
58

    
59
  (group_name,) = args
60
  diskparams = dict(opts.diskparams)
61

    
62
  if opts.disk_state:
63
    disk_state = utils.FlatToDict(opts.disk_state)
64
  else:
65
    disk_state = {}
66
  hv_state = dict(opts.hv_state)
67

    
68
  op = opcodes.OpGroupAdd(group_name=group_name, ndparams=opts.ndparams,
69
                          alloc_policy=opts.alloc_policy,
70
                          diskparams=diskparams, ipolicy=ipolicy,
71
                          hv_state=hv_state,
72
                          disk_state=disk_state)
73
  SubmitOpCode(op, opts=opts)
74

    
75

    
76
def AssignNodes(opts, args):
77
  """Assign nodes to a group.
78

79
  @param opts: the command line options selected by the user
80
  @type args: list
81
  @param args: args[0]: group to assign nodes to; args[1:]: nodes to assign
82
  @rtype: int
83
  @return: the desired exit code
84

85
  """
86
  group_name = args[0]
87
  node_names = args[1:]
88

    
89
  op = opcodes.OpGroupAssignNodes(group_name=group_name, nodes=node_names,
90
                                  force=opts.force)
91
  SubmitOpCode(op, opts=opts)
92

    
93

    
94
def _FmtDict(data):
95
  """Format dict data into command-line format.
96

97
  @param data: The input dict to be formatted
98
  @return: The formatted dict
99

100
  """
101
  if not data:
102
    return "(empty)"
103

    
104
  return utils.CommaJoin(["%s=%s" % (key, value)
105
                          for key, value in data.items()])
106

    
107

    
108
def ListGroups(opts, args):
109
  """List node groups and their properties.
110

111
  @param opts: the command line options selected by the user
112
  @type args: list
113
  @param args: groups to list, or empty for all
114
  @rtype: int
115
  @return: the desired exit code
116

117
  """
118
  desired_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
119
  fmtoverride = {
120
    "node_list": (",".join, False),
121
    "pinst_list": (",".join, False),
122
    "ndparams": (_FmtDict, False),
123
    }
124

    
125
  return GenericList(constants.QR_GROUP, desired_fields, args, None,
126
                     opts.separator, not opts.no_headers,
127
                     format_override=fmtoverride, verbose=opts.verbose,
128
                     force_filter=opts.force_filter)
129

    
130

    
131
def ListGroupFields(opts, args):
132
  """List node fields.
133

134
  @param opts: the command line options selected by the user
135
  @type args: list
136
  @param args: fields to list, or empty for all
137
  @rtype: int
138
  @return: the desired exit code
139

140
  """
141
  return GenericListFields(constants.QR_GROUP, args, opts.separator,
142
                           not opts.no_headers)
143

    
144

    
145
def SetGroupParams(opts, args):
146
  """Modifies a node group's parameters.
147

148
  @param opts: the command line options selected by the user
149
  @type args: list
150
  @param args: should contain only one element, the node group name
151

152
  @rtype: int
153
  @return: the desired exit code
154

155
  """
156
  allmods = [opts.ndparams, opts.alloc_policy, opts.diskparams, opts.hv_state,
157
             opts.disk_state, opts.ispecs_mem_size, opts.ispecs_cpu_count,
158
             opts.ispecs_disk_count, opts.ispecs_disk_size,
159
             opts.ispecs_nic_count, opts.diskparams]
160
  if allmods.count(None) == len(allmods):
161
    ToStderr("Please give at least one of the parameters.")
162
    return 1
163

    
164
  if opts.disk_state:
165
    disk_state = utils.FlatToDict(opts.disk_state)
166
  else:
167
    disk_state = {}
168

    
169
  hv_state = dict(opts.hv_state)
170

    
171
  diskparams = dict(opts.diskparams)
172

    
173
  # set the default values
174
  to_ipolicy = [
175
    opts.ispecs_mem_size,
176
    opts.ispecs_cpu_count,
177
    opts.ispecs_disk_count,
178
    opts.ispecs_disk_size,
179
    opts.ispecs_nic_count,
180
    ]
181
  for ispec in to_ipolicy:
182
    for param in ispec:
183
      if isinstance(ispec[param], basestring):
184
        if ispec[param].lower() == "default":
185
          ispec[param] = constants.VALUE_DEFAULT
186
  # create ipolicy object
187
  ipolicy = objects.CreateIPolicyFromOpts(\
188
    ispecs_mem_size=opts.ispecs_mem_size,
189
    ispecs_cpu_count=opts.ispecs_cpu_count,
190
    ispecs_disk_count=opts.ispecs_disk_count,
191
    ispecs_disk_size=opts.ispecs_disk_size,
192
    ispecs_nic_count=opts.ispecs_nic_count,
193
    ipolicy_disk_templates=opts.ipolicy_disk_templates,
194
    group_ipolicy=True,
195
    allowed_values=[constants.VALUE_DEFAULT])
196

    
197
  op = opcodes.OpGroupSetParams(group_name=args[0],
198
                                ndparams=opts.ndparams,
199
                                alloc_policy=opts.alloc_policy,
200
                                hv_state=hv_state,
201
                                disk_state=disk_state,
202
                                diskparams=diskparams,
203
                                ipolicy=ipolicy)
204

    
205
  result = SubmitOrSend(op, opts)
206

    
207
  if result:
208
    ToStdout("Modified node group %s", args[0])
209
    for param, data in result:
210
      ToStdout(" - %-5s -> %s", param, data)
211

    
212
  return 0
213

    
214

    
215
def RemoveGroup(opts, args):
216
  """Remove a node group from the cluster.
217

218
  @param opts: the command line options selected by the user
219
  @type args: list
220
  @param args: a list of length 1 with the name of the group to remove
221
  @rtype: int
222
  @return: the desired exit code
223

224
  """
225
  (group_name,) = args
226
  op = opcodes.OpGroupRemove(group_name=group_name)
227
  SubmitOpCode(op, opts=opts)
228

    
229

    
230
def RenameGroup(opts, args):
231
  """Rename a node group.
232

233
  @param opts: the command line options selected by the user
234
  @type args: list
235
  @param args: a list of length 2, [old_name, new_name]
236
  @rtype: int
237
  @return: the desired exit code
238

239
  """
240
  group_name, new_name = args
241
  op = opcodes.OpGroupRename(group_name=group_name, new_name=new_name)
242
  SubmitOpCode(op, opts=opts)
243

    
244

    
245
def EvacuateGroup(opts, args):
246
  """Evacuate a node group.
247

248
  """
249
  (group_name, ) = args
250

    
251
  cl = GetClient()
252

    
253
  op = opcodes.OpGroupEvacuate(group_name=group_name,
254
                               iallocator=opts.iallocator,
255
                               target_groups=opts.to,
256
                               early_release=opts.early_release)
257
  result = SubmitOpCode(op, cl=cl, opts=opts)
258

    
259
  # Keep track of submitted jobs
260
  jex = JobExecutor(cl=cl, opts=opts)
261

    
262
  for (status, job_id) in result[constants.JOB_IDS_KEY]:
263
    jex.AddJobId(None, status, job_id)
264

    
265
  results = jex.GetResults()
266
  bad_cnt = len([row for row in results if not row[0]])
267
  if bad_cnt == 0:
268
    ToStdout("All instances evacuated successfully.")
269
    rcode = constants.EXIT_SUCCESS
270
  else:
271
    ToStdout("There were %s errors during the evacuation.", bad_cnt)
272
    rcode = constants.EXIT_FAILURE
273

    
274
  return rcode
275

    
276
commands = {
277
  "add": (
278
    AddGroup, ARGS_ONE_GROUP,
279
    [DRY_RUN_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT, DISK_PARAMS_OPT,
280
     HV_STATE_OPT, DISK_STATE_OPT] + INSTANCE_POLICY_OPTS,
281
    "<group_name>", "Add a new node group to the cluster"),
282
  "assign-nodes": (
283
    AssignNodes, ARGS_ONE_GROUP + ARGS_MANY_NODES, [DRY_RUN_OPT, FORCE_OPT],
284
    "<group_name> <node>...", "Assign nodes to a group"),
285
  "list": (
286
    ListGroups, ARGS_MANY_GROUPS,
287
    [NOHDR_OPT, SEP_OPT, FIELDS_OPT, VERBOSE_OPT, FORCE_FILTER_OPT],
288
    "[<group_name>...]",
289
    "Lists the node groups in the cluster. The available fields can be shown"
290
    " using the \"list-fields\" command (see the man page for details)."
291
    " The default list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS)),
292
  "list-fields": (
293
    ListGroupFields, [ArgUnknown()], [NOHDR_OPT, SEP_OPT], "[fields...]",
294
    "Lists all available fields for node groups"),
295
  "modify": (
296
    SetGroupParams, ARGS_ONE_GROUP,
297
    [DRY_RUN_OPT, SUBMIT_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT, HV_STATE_OPT,
298
     DISK_STATE_OPT, DISK_PARAMS_OPT] + INSTANCE_POLICY_OPTS,
299
    "<group_name>", "Alters the parameters of a node group"),
300
  "remove": (
301
    RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT],
302
    "[--dry-run] <group-name>",
303
    "Remove an (empty) node group from the cluster"),
304
  "rename": (
305
    RenameGroup, [ArgGroup(min=2, max=2)], [DRY_RUN_OPT],
306
    "[--dry-run] <group-name> <new-name>", "Rename a node group"),
307
  "evacuate": (
308
    EvacuateGroup, [ArgGroup(min=1, max=1)],
309
    [TO_GROUP_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT],
310
    "[-I <iallocator>] [--to <group>]",
311
    "Evacuate all instances within a group"),
312
  "list-tags": (
313
    ListTags, ARGS_ONE_GROUP, [PRIORITY_OPT],
314
    "<instance_name>", "List the tags of the given instance"),
315
  "add-tags": (
316
    AddTags, [ArgGroup(min=1, max=1), ArgUnknown()],
317
    [TAG_SRC_OPT, PRIORITY_OPT],
318
    "<instance_name> tag...", "Add tags to the given instance"),
319
  "remove-tags": (
320
    RemoveTags, [ArgGroup(min=1, max=1), ArgUnknown()],
321
    [TAG_SRC_OPT, PRIORITY_OPT],
322
    "<instance_name> tag...", "Remove tags from given instance"),
323
  }
324

    
325

    
326
def Main():
327
  return GenericMain(commands,
328
                     override={"tag_type": constants.TAG_NODEGROUP},
329
                     env_override=_ENV_OVERRIDE)