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21 """Node group related commands"""
22
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24
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 group_ipolicy=True)
57
58 (group_name,) = args
59 diskparams = dict(opts.diskparams)
60
61 if opts.disk_state:
62 disk_state = utils.FlatToDict(opts.disk_state)
63 else:
64 disk_state = {}
65 hv_state = dict(opts.hv_state)
66
67 op = opcodes.OpGroupAdd(group_name=group_name, ndparams=opts.ndparams,
68 alloc_policy=opts.alloc_policy,
69 diskparams=diskparams, ipolicy=ipolicy,
70 hv_state=hv_state,
71 disk_state=disk_state)
72 SubmitOrSend(op, opts)
73
74
76 """Assign nodes to a group.
77
78 @param opts: the command line options selected by the user
79 @type args: list
80 @param args: args[0]: group to assign nodes to; args[1:]: nodes to assign
81 @rtype: int
82 @return: the desired exit code
83
84 """
85 group_name = args[0]
86 node_names = args[1:]
87
88 op = opcodes.OpGroupAssignNodes(group_name=group_name, nodes=node_names,
89 force=opts.force)
90 SubmitOrSend(op, opts)
91
92
94 """Format dict data into command-line format.
95
96 @param data: The input dict to be formatted
97 @return: The formatted dict
98
99 """
100 if not data:
101 return "(empty)"
102
103 return utils.CommaJoin(["%s=%s" % (key, value)
104 for key, value in data.items()])
105
106
108 """List node groups and their properties.
109
110 @param opts: the command line options selected by the user
111 @type args: list
112 @param args: groups to list, or empty for all
113 @rtype: int
114 @return: the desired exit code
115
116 """
117 desired_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
118 fmtoverride = {
119 "node_list": (",".join, False),
120 "pinst_list": (",".join, False),
121 "ndparams": (_FmtDict, False),
122 }
123
124 cl = GetClient(query=True)
125
126 return GenericList(constants.QR_GROUP, desired_fields, args, None,
127 opts.separator, not opts.no_headers,
128 format_override=fmtoverride, verbose=opts.verbose,
129 force_filter=opts.force_filter, cl=cl)
130
131
133 """List node fields.
134
135 @param opts: the command line options selected by the user
136 @type args: list
137 @param args: fields to list, or empty for all
138 @rtype: int
139 @return: the desired exit code
140
141 """
142 cl = GetClient(query=True)
143
144 return GenericListFields(constants.QR_GROUP, args, opts.separator,
145 not opts.no_headers, cl=cl)
146
147
149 """Modifies a node group's parameters.
150
151 @param opts: the command line options selected by the user
152 @type args: list
153 @param args: should contain only one element, the node group name
154
155 @rtype: int
156 @return: the desired exit code
157
158 """
159 allmods = [opts.ndparams, opts.alloc_policy, opts.diskparams, opts.hv_state,
160 opts.disk_state, opts.ipolicy_bounds_specs,
161 opts.ipolicy_vcpu_ratio, opts.ipolicy_spindle_ratio,
162 opts.diskparams]
163 if allmods.count(None) == len(allmods):
164 ToStderr("Please give at least one of the parameters.")
165 return 1
166
167 if opts.disk_state:
168 disk_state = utils.FlatToDict(opts.disk_state)
169 else:
170 disk_state = {}
171
172 hv_state = dict(opts.hv_state)
173
174 diskparams = dict(opts.diskparams)
175
176
177 ipolicy = CreateIPolicyFromOpts(
178 minmax_ispecs=opts.ipolicy_bounds_specs,
179 ipolicy_disk_templates=opts.ipolicy_disk_templates,
180 ipolicy_vcpu_ratio=opts.ipolicy_vcpu_ratio,
181 ipolicy_spindle_ratio=opts.ipolicy_spindle_ratio,
182 group_ipolicy=True,
183 allowed_values=[constants.VALUE_DEFAULT])
184
185 op = opcodes.OpGroupSetParams(group_name=args[0],
186 ndparams=opts.ndparams,
187 alloc_policy=opts.alloc_policy,
188 hv_state=hv_state,
189 disk_state=disk_state,
190 diskparams=diskparams,
191 ipolicy=ipolicy)
192
193 result = SubmitOrSend(op, opts)
194
195 if result:
196 ToStdout("Modified node group %s", args[0])
197 for param, data in result:
198 ToStdout(" - %-5s -> %s", param, data)
199
200 return 0
201
202
204 """Remove a node group from the cluster.
205
206 @param opts: the command line options selected by the user
207 @type args: list
208 @param args: a list of length 1 with the name of the group to remove
209 @rtype: int
210 @return: the desired exit code
211
212 """
213 (group_name,) = args
214 op = opcodes.OpGroupRemove(group_name=group_name)
215 SubmitOrSend(op, opts)
216
217
219 """Rename a node group.
220
221 @param opts: the command line options selected by the user
222 @type args: list
223 @param args: a list of length 2, [old_name, new_name]
224 @rtype: int
225 @return: the desired exit code
226
227 """
228 group_name, new_name = args
229 op = opcodes.OpGroupRename(group_name=group_name, new_name=new_name)
230 SubmitOrSend(op, opts)
231
232
234 """Evacuate a node group.
235
236 """
237 (group_name, ) = args
238
239 cl = GetClient()
240
241 op = opcodes.OpGroupEvacuate(group_name=group_name,
242 iallocator=opts.iallocator,
243 target_groups=opts.to,
244 early_release=opts.early_release)
245 result = SubmitOrSend(op, opts, cl=cl)
246
247
248 jex = JobExecutor(cl=cl, opts=opts)
249
250 for (status, job_id) in result[constants.JOB_IDS_KEY]:
251 jex.AddJobId(None, status, job_id)
252
253 results = jex.GetResults()
254 bad_cnt = len([row for row in results if not row[0]])
255 if bad_cnt == 0:
256 ToStdout("All instances evacuated successfully.")
257 rcode = constants.EXIT_SUCCESS
258 else:
259 ToStdout("There were %s errors during the evacuation.", bad_cnt)
260 rcode = constants.EXIT_FAILURE
261
262 return rcode
263
264
274
275
277 """Shows info about node group.
278
279 """
280 cl = GetClient(query=True)
281 selected_fields = ["name",
282 "ndparams", "custom_ndparams",
283 "diskparams", "custom_diskparams",
284 "ipolicy", "custom_ipolicy"]
285 result = cl.QueryGroups(names=args, fields=selected_fields,
286 use_locking=False)
287
288 PrintGenericInfo([
289 _FormatGroupInfo(group) for group in result
290 ])
291
292
301
302
304 """Shows the command that can be used to re-create a node group.
305
306 Currently it works only for ipolicy specs.
307
308 """
309 cl = GetClient(query=True)
310 selected_fields = ["name"]
311 if opts.include_defaults:
312 selected_fields += ["ipolicy"]
313 else:
314 selected_fields += ["custom_ipolicy"]
315 result = cl.QueryGroups(names=args, fields=selected_fields,
316 use_locking=False)
317
318 for group in result:
319 ToStdout(_GetCreateCommand(group))
320
321
322 commands = {
323 "add": (
324 AddGroup, ARGS_ONE_GROUP,
325 [DRY_RUN_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT, DISK_PARAMS_OPT,
326 HV_STATE_OPT, DISK_STATE_OPT, PRIORITY_OPT,
327 SUBMIT_OPT] + INSTANCE_POLICY_OPTS,
328 "<group_name>", "Add a new node group to the cluster"),
329 "assign-nodes": (
330 AssignNodes, ARGS_ONE_GROUP + ARGS_MANY_NODES,
331 [DRY_RUN_OPT, FORCE_OPT, PRIORITY_OPT, SUBMIT_OPT],
332 "<group_name> <node>...", "Assign nodes to a group"),
333 "list": (
334 ListGroups, ARGS_MANY_GROUPS,
335 [NOHDR_OPT, SEP_OPT, FIELDS_OPT, VERBOSE_OPT, FORCE_FILTER_OPT],
336 "[<group_name>...]",
337 "Lists the node groups in the cluster. The available fields can be shown"
338 " using the \"list-fields\" command (see the man page for details)."
339 " The default list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS)),
340 "list-fields": (
341 ListGroupFields, [ArgUnknown()], [NOHDR_OPT, SEP_OPT], "[fields...]",
342 "Lists all available fields for node groups"),
343 "modify": (
344 SetGroupParams, ARGS_ONE_GROUP,
345 [DRY_RUN_OPT, SUBMIT_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT, HV_STATE_OPT,
346 DISK_STATE_OPT, DISK_PARAMS_OPT, PRIORITY_OPT] + INSTANCE_POLICY_OPTS,
347 "<group_name>", "Alters the parameters of a node group"),
348 "remove": (
349 RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT, PRIORITY_OPT, SUBMIT_OPT],
350 "[--dry-run] <group-name>",
351 "Remove an (empty) node group from the cluster"),
352 "rename": (
353 RenameGroup, [ArgGroup(min=2, max=2)],
354 [DRY_RUN_OPT, SUBMIT_OPT, PRIORITY_OPT],
355 "[--dry-run] <group-name> <new-name>", "Rename a node group"),
356 "evacuate": (
357 EvacuateGroup, [ArgGroup(min=1, max=1)],
358 [TO_GROUP_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT, SUBMIT_OPT, PRIORITY_OPT],
359 "[-I <iallocator>] [--to <group>]",
360 "Evacuate all instances within a group"),
361 "list-tags": (
362 ListTags, ARGS_ONE_GROUP, [],
363 "<group_name>", "List the tags of the given group"),
364 "add-tags": (
365 AddTags, [ArgGroup(min=1, max=1), ArgUnknown()],
366 [TAG_SRC_OPT, PRIORITY_OPT, SUBMIT_OPT],
367 "<group_name> tag...", "Add tags to the given group"),
368 "remove-tags": (
369 RemoveTags, [ArgGroup(min=1, max=1), ArgUnknown()],
370 [TAG_SRC_OPT, PRIORITY_OPT, SUBMIT_OPT],
371 "<group_name> tag...", "Remove tags from the given group"),
372 "info": (
373 GroupInfo, ARGS_MANY_GROUPS, [], "[<group_name>...]",
374 "Show group information"),
375 "show-ispecs-cmd": (
376 ShowCreateCommand, ARGS_MANY_GROUPS, [INCLUDEDEFAULTS_OPT],
377 "[--include-defaults] [<group_name>...]",
378 "Show the command line to re-create a group"),
379 }
380
381
383 return GenericMain(commands,
384 override={"tag_type": constants.TAG_NODEGROUP},
385 env_override=_ENV_OVERRIDE)
386