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21 """Node group related commands"""
22
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25
26
27 from cStringIO import StringIO
28
29 from ganeti.cli import *
30 from ganeti import constants
31 from ganeti import opcodes
32 from ganeti import utils
33 from ganeti import compat
34
35
36
37 _LIST_DEF_FIELDS = ["name", "node_cnt", "pinst_cnt", "alloc_policy", "ndparams"]
38
39 _ENV_OVERRIDE = compat.UniqueFrozenset(["list"])
40
41
43 """Add a node group to the cluster.
44
45 @param opts: the command line options selected by the user
46 @type args: list
47 @param args: a list of length 1 with the name of the group to create
48 @rtype: int
49 @return: the desired exit code
50
51 """
52 ipolicy = CreateIPolicyFromOpts(
53 minmax_ispecs=opts.ipolicy_bounds_specs,
54 ipolicy_vcpu_ratio=opts.ipolicy_vcpu_ratio,
55 ipolicy_spindle_ratio=opts.ipolicy_spindle_ratio,
56 ipolicy_disk_templates=opts.ipolicy_disk_templates,
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 SubmitOrSend(op, opts)
74
75
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 SubmitOrSend(op, opts)
92
93
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
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 cl = GetClient(query=True)
126
127 return GenericList(constants.QR_GROUP, desired_fields, args, None,
128 opts.separator, not opts.no_headers,
129 format_override=fmtoverride, verbose=opts.verbose,
130 force_filter=opts.force_filter, cl=cl)
131
132
134 """List node fields.
135
136 @param opts: the command line options selected by the user
137 @type args: list
138 @param args: fields to list, or empty for all
139 @rtype: int
140 @return: the desired exit code
141
142 """
143 cl = GetClient(query=True)
144
145 return GenericListFields(constants.QR_GROUP, args, opts.separator,
146 not opts.no_headers, cl=cl)
147
148
150 """Modifies a node group's parameters.
151
152 @param opts: the command line options selected by the user
153 @type args: list
154 @param args: should contain only one element, the node group name
155
156 @rtype: int
157 @return: the desired exit code
158
159 """
160 allmods = [opts.ndparams, opts.alloc_policy, opts.diskparams, opts.hv_state,
161 opts.disk_state, opts.ipolicy_bounds_specs,
162 opts.ipolicy_vcpu_ratio, opts.ipolicy_spindle_ratio,
163 opts.diskparams, opts.ipolicy_disk_templates]
164 if allmods.count(None) == len(allmods):
165 ToStderr("Please give at least one of the parameters.")
166 return 1
167
168 if opts.disk_state:
169 disk_state = utils.FlatToDict(opts.disk_state)
170 else:
171 disk_state = {}
172
173 hv_state = dict(opts.hv_state)
174
175 diskparams = dict(opts.diskparams)
176
177
178 ipolicy = CreateIPolicyFromOpts(
179 minmax_ispecs=opts.ipolicy_bounds_specs,
180 ipolicy_disk_templates=opts.ipolicy_disk_templates,
181 ipolicy_vcpu_ratio=opts.ipolicy_vcpu_ratio,
182 ipolicy_spindle_ratio=opts.ipolicy_spindle_ratio,
183 group_ipolicy=True,
184 allowed_values=[constants.VALUE_DEFAULT])
185
186 op = opcodes.OpGroupSetParams(group_name=args[0],
187 ndparams=opts.ndparams,
188 alloc_policy=opts.alloc_policy,
189 hv_state=hv_state,
190 disk_state=disk_state,
191 diskparams=diskparams,
192 ipolicy=ipolicy)
193
194 result = SubmitOrSend(op, opts)
195
196 if result:
197 ToStdout("Modified node group %s", args[0])
198 for param, data in result:
199 ToStdout(" - %-5s -> %s", param, data)
200
201 return 0
202
203
205 """Remove a node group from the cluster.
206
207 @param opts: the command line options selected by the user
208 @type args: list
209 @param args: a list of length 1 with the name of the group to remove
210 @rtype: int
211 @return: the desired exit code
212
213 """
214 (group_name,) = args
215 op = opcodes.OpGroupRemove(group_name=group_name)
216 SubmitOrSend(op, opts)
217
218
220 """Rename a node group.
221
222 @param opts: the command line options selected by the user
223 @type args: list
224 @param args: a list of length 2, [old_name, new_name]
225 @rtype: int
226 @return: the desired exit code
227
228 """
229 group_name, new_name = args
230 op = opcodes.OpGroupRename(group_name=group_name, new_name=new_name)
231 SubmitOrSend(op, opts)
232
233
235 """Evacuate a node group.
236
237 """
238 (group_name, ) = args
239
240 cl = GetClient()
241
242 op = opcodes.OpGroupEvacuate(group_name=group_name,
243 iallocator=opts.iallocator,
244 target_groups=opts.to,
245 early_release=opts.early_release)
246 result = SubmitOrSend(op, opts, cl=cl)
247
248
249 jex = JobExecutor(cl=cl, opts=opts)
250
251 for (status, job_id) in result[constants.JOB_IDS_KEY]:
252 jex.AddJobId(None, status, job_id)
253
254 results = jex.GetResults()
255 bad_cnt = len([row for row in results if not row[0]])
256 if bad_cnt == 0:
257 ToStdout("All instances evacuated successfully.")
258 rcode = constants.EXIT_SUCCESS
259 else:
260 ToStdout("There were %s errors during the evacuation.", bad_cnt)
261 rcode = constants.EXIT_FAILURE
262
263 return rcode
264
265
275
276
278 """Shows info about node group.
279
280 """
281 cl = GetClient(query=True)
282 selected_fields = ["name",
283 "ndparams", "custom_ndparams",
284 "diskparams", "custom_diskparams",
285 "ipolicy", "custom_ipolicy"]
286 result = cl.QueryGroups(names=args, fields=selected_fields,
287 use_locking=False)
288
289 PrintGenericInfo([
290 _FormatGroupInfo(group) for group in result
291 ])
292
293
302
303
305 """Shows the command that can be used to re-create a node group.
306
307 Currently it works only for ipolicy specs.
308
309 """
310 cl = GetClient(query=True)
311 selected_fields = ["name"]
312 if opts.include_defaults:
313 selected_fields += ["ipolicy"]
314 else:
315 selected_fields += ["custom_ipolicy"]
316 result = cl.QueryGroups(names=args, fields=selected_fields,
317 use_locking=False)
318
319 for group in result:
320 ToStdout(_GetCreateCommand(group))
321
322
323 commands = {
324 "add": (
325 AddGroup, ARGS_ONE_GROUP,
326 [DRY_RUN_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT, DISK_PARAMS_OPT,
327 HV_STATE_OPT, DISK_STATE_OPT, PRIORITY_OPT]
328 + SUBMIT_OPTS + INSTANCE_POLICY_OPTS,
329 "<group_name>", "Add a new node group to the cluster"),
330 "assign-nodes": (
331 AssignNodes, ARGS_ONE_GROUP + ARGS_MANY_NODES,
332 [DRY_RUN_OPT, FORCE_OPT, PRIORITY_OPT] + SUBMIT_OPTS,
333 "<group_name> <node>...", "Assign nodes to a group"),
334 "list": (
335 ListGroups, ARGS_MANY_GROUPS,
336 [NOHDR_OPT, SEP_OPT, FIELDS_OPT, VERBOSE_OPT, FORCE_FILTER_OPT],
337 "[<group_name>...]",
338 "Lists the node groups in the cluster. The available fields can be shown"
339 " using the \"list-fields\" command (see the man page for details)."
340 " The default list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS)),
341 "list-fields": (
342 ListGroupFields, [ArgUnknown()], [NOHDR_OPT, SEP_OPT], "[fields...]",
343 "Lists all available fields for node groups"),
344 "modify": (
345 SetGroupParams, ARGS_ONE_GROUP,
346 [DRY_RUN_OPT] + SUBMIT_OPTS +
347 [ALLOC_POLICY_OPT, NODE_PARAMS_OPT, HV_STATE_OPT, DISK_STATE_OPT,
348 DISK_PARAMS_OPT, PRIORITY_OPT]
349 + INSTANCE_POLICY_OPTS,
350 "<group_name>", "Alters the parameters of a node group"),
351 "remove": (
352 RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT, PRIORITY_OPT] + SUBMIT_OPTS,
353 "[--dry-run] <group-name>",
354 "Remove an (empty) node group from the cluster"),
355 "rename": (
356 RenameGroup, [ArgGroup(min=2, max=2)],
357 [DRY_RUN_OPT] + SUBMIT_OPTS + [PRIORITY_OPT],
358 "[--dry-run] <group-name> <new-name>", "Rename a node group"),
359 "evacuate": (
360 EvacuateGroup, [ArgGroup(min=1, max=1)],
361 [TO_GROUP_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT] + SUBMIT_OPTS,
362 "[-I <iallocator>] [--to <group>]",
363 "Evacuate all instances within a group"),
364 "list-tags": (
365 ListTags, ARGS_ONE_GROUP, [],
366 "<group_name>", "List the tags of the given group"),
367 "add-tags": (
368 AddTags, [ArgGroup(min=1, max=1), ArgUnknown()],
369 [TAG_SRC_OPT, PRIORITY_OPT] + SUBMIT_OPTS,
370 "<group_name> tag...", "Add tags to the given group"),
371 "remove-tags": (
372 RemoveTags, [ArgGroup(min=1, max=1), ArgUnknown()],
373 [TAG_SRC_OPT, PRIORITY_OPT] + SUBMIT_OPTS,
374 "<group_name> tag...", "Remove tags from the given group"),
375 "info": (
376 GroupInfo, ARGS_MANY_GROUPS, [], "[<group_name>...]",
377 "Show group information"),
378 "show-ispecs-cmd": (
379 ShowCreateCommand, ARGS_MANY_GROUPS, [INCLUDEDEFAULTS_OPT],
380 "[--include-defaults] [<group_name>...]",
381 "Show the command line to re-create a group"),
382 }
383
384
386 return GenericMain(commands,
387 override={"tag_type": constants.TAG_NODEGROUP},
388 env_override=_ENV_OVERRIDE)
389