4 # Copyright (C) 2010, 2011 Google Inc.
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.
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.
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
21 """Node group related commands"""
23 # pylint: disable=W0401,W0614
24 # W0401: Wildcard import ganeti.cli
25 # W0614: Unused import %s from wildcard import (since we need cli)
27 from ganeti.cli import *
28 from ganeti import constants
29 from ganeti import opcodes
30 from ganeti import utils
33 #: default list of fields for L{ListGroups}
34 _LIST_DEF_FIELDS = ["name", "node_cnt", "pinst_cnt", "alloc_policy", "ndparams"]
37 _ENV_OVERRIDE = frozenset(["list"])
40 def AddGroup(opts, args):
41 """Add a node group to the cluster.
43 @param opts: the command line options selected by the user
45 @param args: a list of length 1 with the name of the group to create
47 @return: the desired exit code
51 diskparams = dict(opts.diskparams)
52 op = opcodes.OpGroupAdd(group_name=group_name, ndparams=opts.ndparams,
53 alloc_policy=opts.alloc_policy,
54 diskparams=diskparams)
55 SubmitOpCode(op, opts=opts)
58 def AssignNodes(opts, args):
59 """Assign nodes to a group.
61 @param opts: the command line options selected by the user
63 @param args: args[0]: group to assign nodes to; args[1:]: nodes to assign
65 @return: the desired exit code
71 op = opcodes.OpGroupAssignNodes(group_name=group_name, nodes=node_names,
73 SubmitOpCode(op, opts=opts)
77 """Format dict data into command-line format.
79 @param data: The input dict to be formatted
80 @return: The formatted dict
86 return utils.CommaJoin(["%s=%s" % (key, value)
87 for key, value in data.items()])
90 def ListGroups(opts, args):
91 """List node groups and their properties.
93 @param opts: the command line options selected by the user
95 @param args: groups to list, or empty for all
97 @return: the desired exit code
100 desired_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
102 "node_list": (",".join, False),
103 "pinst_list": (",".join, False),
104 "ndparams": (_FmtDict, False),
107 return GenericList(constants.QR_GROUP, desired_fields, args, None,
108 opts.separator, not opts.no_headers,
109 format_override=fmtoverride, verbose=opts.verbose,
110 force_filter=opts.force_filter)
113 def ListGroupFields(opts, args):
116 @param opts: the command line options selected by the user
118 @param args: fields to list, or empty for all
120 @return: the desired exit code
123 return GenericListFields(constants.QR_GROUP, args, opts.separator,
127 def SetGroupParams(opts, args):
128 """Modifies a node group's parameters.
130 @param opts: the command line options selected by the user
132 @param args: should contain only one element, the node group name
135 @return: the desired exit code
138 if (opts.ndparams is None and opts.alloc_policy is None and
139 not (opts.hv_state or opts.disk_state)):
140 ToStderr("Please give at least one of the parameters.")
144 disk_state = utils.FlatToDict(opts.disk_state)
148 hv_state = dict(opts.hv_state)
150 diskparams = dict(opts.diskparams)
151 op = opcodes.OpGroupSetParams(group_name=args[0],
152 ndparams=opts.ndparams,
153 alloc_policy=opts.alloc_policy,
155 disk_state=disk_state,
156 diskparams=diskparams)
157 result = SubmitOrSend(op, opts)
160 ToStdout("Modified node group %s", args[0])
161 for param, data in result:
162 ToStdout(" - %-5s -> %s", param, data)
167 def RemoveGroup(opts, args):
168 """Remove a node group from the cluster.
170 @param opts: the command line options selected by the user
172 @param args: a list of length 1 with the name of the group to remove
174 @return: the desired exit code
178 op = opcodes.OpGroupRemove(group_name=group_name)
179 SubmitOpCode(op, opts=opts)
182 def RenameGroup(opts, args):
183 """Rename a node group.
185 @param opts: the command line options selected by the user
187 @param args: a list of length 2, [old_name, new_name]
189 @return: the desired exit code
192 group_name, new_name = args
193 op = opcodes.OpGroupRename(group_name=group_name, new_name=new_name)
194 SubmitOpCode(op, opts=opts)
197 def EvacuateGroup(opts, args):
198 """Evacuate a node group.
201 (group_name, ) = args
205 op = opcodes.OpGroupEvacuate(group_name=group_name,
206 iallocator=opts.iallocator,
207 target_groups=opts.to,
208 early_release=opts.early_release)
209 result = SubmitOpCode(op, cl=cl, opts=opts)
211 # Keep track of submitted jobs
212 jex = JobExecutor(cl=cl, opts=opts)
214 for (status, job_id) in result[constants.JOB_IDS_KEY]:
215 jex.AddJobId(None, status, job_id)
217 results = jex.GetResults()
218 bad_cnt = len([row for row in results if not row[0]])
220 ToStdout("All instances evacuated successfully.")
221 rcode = constants.EXIT_SUCCESS
223 ToStdout("There were %s errors during the evacuation.", bad_cnt)
224 rcode = constants.EXIT_FAILURE
231 AddGroup, ARGS_ONE_GROUP,
232 [DRY_RUN_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT, DISK_PARAMS_OPT],
233 "<group_name>", "Add a new node group to the cluster"),
235 AssignNodes, ARGS_ONE_GROUP + ARGS_MANY_NODES, [DRY_RUN_OPT, FORCE_OPT],
236 "<group_name> <node>...", "Assign nodes to a group"),
238 ListGroups, ARGS_MANY_GROUPS,
239 [NOHDR_OPT, SEP_OPT, FIELDS_OPT, VERBOSE_OPT, FORCE_FILTER_OPT],
241 "Lists the node groups in the cluster. The available fields can be shown"
242 " using the \"list-fields\" command (see the man page for details)."
243 " The default list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS)),
245 ListGroupFields, [ArgUnknown()], [NOHDR_OPT, SEP_OPT], "[fields...]",
246 "Lists all available fields for node groups"),
248 SetGroupParams, ARGS_ONE_GROUP,
249 [DRY_RUN_OPT, SUBMIT_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT, HV_STATE_OPT,
250 DISK_STATE_OPT, DISK_PARAMS_OPT],
251 "<group_name>", "Alters the parameters of a node group"),
253 RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT],
254 "[--dry-run] <group-name>",
255 "Remove an (empty) node group from the cluster"),
257 RenameGroup, [ArgGroup(min=2, max=2)], [DRY_RUN_OPT],
258 "[--dry-run] <group-name> <new-name>", "Rename a node group"),
260 EvacuateGroup, [ArgGroup(min=1, max=1)],
261 [TO_GROUP_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT],
262 "[-I <iallocator>] [--to <group>]",
263 "Evacuate all instances within a group"),
265 ListTags, ARGS_ONE_GROUP, [PRIORITY_OPT],
266 "<instance_name>", "List the tags of the given instance"),
268 AddTags, [ArgGroup(min=1, max=1), ArgUnknown()],
269 [TAG_SRC_OPT, PRIORITY_OPT],
270 "<instance_name> tag...", "Add tags to the given instance"),
272 RemoveTags, [ArgGroup(min=1, max=1), ArgUnknown()],
273 [TAG_SRC_OPT, PRIORITY_OPT],
274 "<instance_name> tag...", "Remove tags from given instance"),
279 return GenericMain(commands,
280 override={"tag_type": constants.TAG_NODEGROUP},
281 env_override=_ENV_OVERRIDE)