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 op = opcodes.OpGroupAdd(group_name=group_name, ndparams=opts.ndparams,
52 alloc_policy=opts.alloc_policy)
53 SubmitOpCode(op, opts=opts)
56 def AssignNodes(opts, args):
57 """Assign nodes to a group.
59 @param opts: the command line options selected by the user
61 @param args: args[0]: group to assign nodes to; args[1:]: nodes to assign
63 @return: the desired exit code
69 op = opcodes.OpGroupAssignNodes(group_name=group_name, nodes=node_names,
71 SubmitOpCode(op, opts=opts)
75 """Format dict data into command-line format.
77 @param data: The input dict to be formatted
78 @return: The formatted dict
84 return utils.CommaJoin(["%s=%s" % (key, value)
85 for key, value in data.items()])
88 def ListGroups(opts, args):
89 """List node groups and their properties.
91 @param opts: the command line options selected by the user
93 @param args: groups to list, or empty for all
95 @return: the desired exit code
98 desired_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
100 "node_list": (",".join, False),
101 "pinst_list": (",".join, False),
102 "ndparams": (_FmtDict, False),
105 return GenericList(constants.QR_GROUP, desired_fields, args, None,
106 opts.separator, not opts.no_headers,
107 format_override=fmtoverride, verbose=opts.verbose,
108 force_filter=opts.force_filter)
111 def ListGroupFields(opts, args):
114 @param opts: the command line options selected by the user
116 @param args: fields to list, or empty for all
118 @return: the desired exit code
121 return GenericListFields(constants.QR_GROUP, args, opts.separator,
125 def SetGroupParams(opts, args):
126 """Modifies a node group's parameters.
128 @param opts: the command line options selected by the user
130 @param args: should contain only one element, the node group name
133 @return: the desired exit code
136 if opts.ndparams is None and opts.alloc_policy is None:
137 ToStderr("Please give at least one of the parameters.")
140 op = opcodes.OpGroupSetParams(group_name=args[0],
141 ndparams=opts.ndparams,
142 alloc_policy=opts.alloc_policy)
143 result = SubmitOrSend(op, opts)
146 ToStdout("Modified node group %s", args[0])
147 for param, data in result:
148 ToStdout(" - %-5s -> %s", param, data)
153 def RemoveGroup(opts, args):
154 """Remove a node group from the cluster.
156 @param opts: the command line options selected by the user
158 @param args: a list of length 1 with the name of the group to remove
160 @return: the desired exit code
164 op = opcodes.OpGroupRemove(group_name=group_name)
165 SubmitOpCode(op, opts=opts)
168 def RenameGroup(opts, args):
169 """Rename a node group.
171 @param opts: the command line options selected by the user
173 @param args: a list of length 2, [old_name, new_name]
175 @return: the desired exit code
178 group_name, new_name = args
179 op = opcodes.OpGroupRename(group_name=group_name, new_name=new_name)
180 SubmitOpCode(op, opts=opts)
183 def EvacuateGroup(opts, args):
184 """Evacuate a node group.
187 (group_name, ) = args
191 op = opcodes.OpGroupEvacuate(group_name=group_name,
192 iallocator=opts.iallocator,
193 target_groups=opts.to,
194 early_release=opts.early_release)
195 result = SubmitOpCode(op, cl=cl, opts=opts)
197 # Keep track of submitted jobs
198 jex = JobExecutor(cl=cl, opts=opts)
200 for (status, job_id) in result[constants.JOB_IDS_KEY]:
201 jex.AddJobId(None, status, job_id)
203 results = jex.GetResults()
204 bad_cnt = len([row for row in results if not row[0]])
206 ToStdout("All instances evacuated successfully.")
207 rcode = constants.EXIT_SUCCESS
209 ToStdout("There were %s errors during the evacuation.", bad_cnt)
210 rcode = constants.EXIT_FAILURE
217 AddGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT],
218 "<group_name>", "Add a new node group to the cluster"),
220 AssignNodes, ARGS_ONE_GROUP + ARGS_MANY_NODES, [DRY_RUN_OPT, FORCE_OPT],
221 "<group_name> <node>...", "Assign nodes to a group"),
223 ListGroups, ARGS_MANY_GROUPS,
224 [NOHDR_OPT, SEP_OPT, FIELDS_OPT, VERBOSE_OPT, FORCE_FILTER_OPT],
226 "Lists the node groups in the cluster. The available fields can be shown"
227 " using the \"list-fields\" command (see the man page for details)."
228 " The default list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS)),
230 ListGroupFields, [ArgUnknown()], [NOHDR_OPT, SEP_OPT], "[fields...]",
231 "Lists all available fields for node groups"),
233 SetGroupParams, ARGS_ONE_GROUP,
234 [DRY_RUN_OPT, SUBMIT_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT],
235 "<group_name>", "Alters the parameters of a node group"),
237 RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT],
238 "[--dry-run] <group-name>",
239 "Remove an (empty) node group from the cluster"),
241 RenameGroup, [ArgGroup(min=2, max=2)], [DRY_RUN_OPT],
242 "[--dry-run] <group-name> <new-name>", "Rename a node group"),
244 EvacuateGroup, [ArgGroup(min=1, max=1)],
245 [TO_GROUP_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT],
246 "[-I <iallocator>] [--to <group>]",
247 "Evacuate all instances within a group"),
249 ListTags, ARGS_ONE_GROUP, [PRIORITY_OPT],
250 "<instance_name>", "List the tags of the given instance"),
252 AddTags, [ArgGroup(min=1, max=1), ArgUnknown()],
253 [TAG_SRC_OPT, PRIORITY_OPT],
254 "<instance_name> tag...", "Add tags to the given instance"),
256 RemoveTags, [ArgGroup(min=1, max=1), ArgUnknown()],
257 [TAG_SRC_OPT, PRIORITY_OPT],
258 "<instance_name> tag...", "Remove tags from given instance"),
263 return GenericMain(commands,
264 override={"tag_type": constants.TAG_NODEGROUP},
265 env_override=_ENV_OVERRIDE)