4 # Copyright (C) 2010 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-msg=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"]
37 def AddGroup(opts, args):
38 """Add a node group to the cluster.
40 @param opts: the command line options selected by the user
42 @param args: a list of length 1 with the name of the group to create
44 @return: the desired exit code
48 op = opcodes.OpAddGroup(group_name=group_name, ndparams=opts.ndparams,
49 alloc_policy=opts.alloc_policy)
50 SubmitOpCode(op, opts=opts)
53 def AssignNodes(opts, args):
54 """Assign nodes to a group.
56 @param opts: the command line options selected by the user
58 @param args: args[0]: group to assign nodes to; args[1:]: nodes to assign
60 @return: the desired exit code
66 op = opcodes.OpAssignGroupNodes(group_name=group_name, nodes=node_names,
68 SubmitOpCode(op, opts=opts)
71 def ListGroups(opts, args):
72 """List node groups and their properties.
74 @param opts: the command line options selected by the user
76 @param args: groups to list, or empty for all
78 @return: the desired exit code
81 desired_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
82 fmtoverride = dict.fromkeys(["node_list", "pinst_list"], (",".join, False))
84 return GenericList(constants.QR_GROUP, desired_fields, args, None,
85 opts.separator, not opts.no_headers,
86 format_override=fmtoverride)
89 def ListGroupFields(opts, args):
92 @param opts: the command line options selected by the user
94 @param args: fields to list, or empty for all
96 @return: the desired exit code
99 return GenericListFields(constants.QR_GROUP, args, opts.separator,
103 def SetGroupParams(opts, args):
104 """Modifies a node group's parameters.
106 @param opts: the command line options seletect by the user
108 @param args: should contain only one element, the node group name
111 @return: the desired exit code
115 "ndparams": opts.ndparams,
116 "alloc_policy": opts.alloc_policy,
119 if all_changes.values().count(None) == len(all_changes):
120 ToStderr("Please give at least one of the parameters.")
123 op = opcodes.OpSetGroupParams(group_name=args[0], # pylint: disable-msg=W0142
125 result = SubmitOrSend(op, opts)
128 ToStdout("Modified node group %s", args[0])
129 for param, data in result:
130 ToStdout(" - %-5s -> %s", param, data)
135 def RemoveGroup(opts, args):
136 """Remove a node group from the cluster.
138 @param opts: the command line options selected by the user
140 @param args: a list of length 1 with the name of the group to remove
142 @return: the desired exit code
146 op = opcodes.OpRemoveGroup(group_name=group_name)
147 SubmitOpCode(op, opts=opts)
150 def RenameGroup(opts, args):
151 """Rename a node group.
153 @param opts: the command line options selected by the user
155 @param args: a list of length 2, [old_name, new_name]
157 @return: the desired exit code
160 old_name, new_name = args
161 op = opcodes.OpRenameGroup(old_name=old_name, new_name=new_name)
162 SubmitOpCode(op, opts=opts)
167 AddGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT],
168 "<group_name>", "Add a new node group to the cluster"),
170 AssignNodes, ARGS_ONE_GROUP + ARGS_MANY_NODES, [DRY_RUN_OPT, FORCE_OPT],
171 "<group_name> <node>...", "Assign nodes to a group"),
173 ListGroups, ARGS_MANY_GROUPS,
174 [NOHDR_OPT, SEP_OPT, FIELDS_OPT],
176 "Lists the node groups in the cluster. The available fields can be shown"
177 " using the \"list-fields\" command (see the man page for details)."
178 " The default list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS)),
180 ListGroupFields, [ArgUnknown()], [NOHDR_OPT, SEP_OPT], "[fields...]",
181 "Lists all available fields for node groups"),
183 SetGroupParams, ARGS_ONE_GROUP,
184 [DRY_RUN_OPT, SUBMIT_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT],
185 "<group_name>", "Alters the parameters of a node group"),
187 RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT],
188 "[--dry-run] <group_name>",
189 "Remove an (empty) node group from the cluster"),
191 RenameGroup, [ArgGroup(min=2, max=2)], [DRY_RUN_OPT],
192 "[--dry-run] <old_name> <new_name>", "Rename a node group"),
197 return GenericMain(commands)