root / lib / client / gnt_group.py @ ea0f78c8
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# Copyright (C) 2010, 2011, 2012 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Node group related commands"""
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# pylint: disable=W0401,W0614
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# W0401: Wildcard import ganeti.cli
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# W0614: Unused import %s from wildcard import (since we need cli)
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from ganeti.cli import * |
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from ganeti import constants |
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from ganeti import objects |
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from ganeti import opcodes |
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from ganeti import utils |
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from cStringIO import StringIO |
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#: default list of fields for L{ListGroups}
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_LIST_DEF_FIELDS = ["name", "node_cnt", "pinst_cnt", "alloc_policy", "ndparams"] |
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_ENV_OVERRIDE = frozenset(["list"]) |
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def AddGroup(opts, args): |
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"""Add a node group to the cluster.
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@param opts: the command line options selected by the user
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@type args: list
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@param args: a list of length 1 with the name of the group to create
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@rtype: int
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@return: the desired exit code
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"""
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ipolicy = \ |
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objects.CreateIPolicyFromOpts(ispecs_mem_size=opts.ispecs_mem_size, |
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ispecs_cpu_count=opts.ispecs_cpu_count, |
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ispecs_disk_count=opts.ispecs_disk_count, |
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ispecs_disk_size=opts.ispecs_disk_size, |
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ispecs_nic_count=opts.ispecs_nic_count, |
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group_ipolicy=True)
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(group_name,) = args |
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diskparams = dict(opts.diskparams)
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if opts.disk_state:
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disk_state = utils.FlatToDict(opts.disk_state) |
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else:
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disk_state = {} |
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hv_state = dict(opts.hv_state)
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op = opcodes.OpGroupAdd(group_name=group_name, ndparams=opts.ndparams, |
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alloc_policy=opts.alloc_policy, |
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diskparams=diskparams, ipolicy=ipolicy, |
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hv_state=hv_state, |
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disk_state=disk_state) |
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SubmitOrSend(op, opts) |
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def AssignNodes(opts, args): |
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"""Assign nodes to a group.
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@param opts: the command line options selected by the user
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@type args: list
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@param args: args[0]: group to assign nodes to; args[1:]: nodes to assign
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@rtype: int
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@return: the desired exit code
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"""
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group_name = args[0]
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node_names = args[1:]
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op = opcodes.OpGroupAssignNodes(group_name=group_name, nodes=node_names, |
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force=opts.force) |
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SubmitOrSend(op, opts) |
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def _FmtDict(data): |
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"""Format dict data into command-line format.
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@param data: The input dict to be formatted
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@return: The formatted dict
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"""
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if not data: |
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return "(empty)" |
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return utils.CommaJoin(["%s=%s" % (key, value) |
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for key, value in data.items()]) |
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def ListGroups(opts, args): |
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"""List node groups and their properties.
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@param opts: the command line options selected by the user
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@type args: list
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@param args: groups to list, or empty for all
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@rtype: int
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@return: the desired exit code
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"""
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desired_fields = ParseFields(opts.output, _LIST_DEF_FIELDS) |
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fmtoverride = { |
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"node_list": (",".join, False), |
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"pinst_list": (",".join, False), |
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"ndparams": (_FmtDict, False), |
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} |
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return GenericList(constants.QR_GROUP, desired_fields, args, None, |
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opts.separator, not opts.no_headers,
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format_override=fmtoverride, verbose=opts.verbose, |
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force_filter=opts.force_filter) |
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def ListGroupFields(opts, args): |
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"""List node fields.
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@param opts: the command line options selected by the user
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@type args: list
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@param args: fields to list, or empty for all
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@rtype: int
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@return: the desired exit code
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"""
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return GenericListFields(constants.QR_GROUP, args, opts.separator,
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not opts.no_headers)
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def SetGroupParams(opts, args): |
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"""Modifies a node group's parameters.
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@param opts: the command line options selected by the user
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@type args: list
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@param args: should contain only one element, the node group name
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@rtype: int
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@return: the desired exit code
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"""
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allmods = [opts.ndparams, opts.alloc_policy, opts.diskparams, opts.hv_state, |
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opts.disk_state, opts.ispecs_mem_size, opts.ispecs_cpu_count, |
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opts.ispecs_disk_count, opts.ispecs_disk_size, |
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opts.ispecs_nic_count, opts.diskparams] |
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if allmods.count(None) == len(allmods): |
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ToStderr("Please give at least one of the parameters.")
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return 1 |
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if opts.disk_state:
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disk_state = utils.FlatToDict(opts.disk_state) |
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else:
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disk_state = {} |
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hv_state = dict(opts.hv_state)
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diskparams = dict(opts.diskparams)
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# set the default values
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to_ipolicy = [ |
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opts.ispecs_mem_size, |
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opts.ispecs_cpu_count, |
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opts.ispecs_disk_count, |
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opts.ispecs_disk_size, |
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opts.ispecs_nic_count, |
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] |
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for ispec in to_ipolicy: |
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for param in ispec: |
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if isinstance(ispec[param], basestring): |
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if ispec[param].lower() == "default": |
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ispec[param] = constants.VALUE_DEFAULT |
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# create ipolicy object
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ipolicy = objects.CreateIPolicyFromOpts(\ |
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ispecs_mem_size=opts.ispecs_mem_size, |
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ispecs_cpu_count=opts.ispecs_cpu_count, |
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ispecs_disk_count=opts.ispecs_disk_count, |
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ispecs_disk_size=opts.ispecs_disk_size, |
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ispecs_nic_count=opts.ispecs_nic_count, |
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ipolicy_disk_templates=opts.ipolicy_disk_templates, |
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group_ipolicy=True,
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allowed_values=[constants.VALUE_DEFAULT]) |
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op = opcodes.OpGroupSetParams(group_name=args[0],
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ndparams=opts.ndparams, |
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alloc_policy=opts.alloc_policy, |
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hv_state=hv_state, |
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disk_state=disk_state, |
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diskparams=diskparams, |
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ipolicy=ipolicy) |
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result = SubmitOrSend(op, opts) |
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if result:
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ToStdout("Modified node group %s", args[0]) |
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for param, data in result: |
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ToStdout(" - %-5s -> %s", param, data)
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return 0 |
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def RemoveGroup(opts, args): |
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"""Remove a node group from the cluster.
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@param opts: the command line options selected by the user
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@type args: list
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@param args: a list of length 1 with the name of the group to remove
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@rtype: int
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@return: the desired exit code
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"""
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(group_name,) = args |
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op = opcodes.OpGroupRemove(group_name=group_name) |
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SubmitOrSend(op, opts) |
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def RenameGroup(opts, args): |
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"""Rename a node group.
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@param opts: the command line options selected by the user
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@type args: list
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@param args: a list of length 2, [old_name, new_name]
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@rtype: int
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@return: the desired exit code
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"""
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group_name, new_name = args |
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op = opcodes.OpGroupRename(group_name=group_name, new_name=new_name) |
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SubmitOrSend(op, opts) |
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def EvacuateGroup(opts, args): |
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"""Evacuate a node group.
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"""
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(group_name, ) = args |
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cl = GetClient() |
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op = opcodes.OpGroupEvacuate(group_name=group_name, |
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iallocator=opts.iallocator, |
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target_groups=opts.to, |
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early_release=opts.early_release) |
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result = SubmitOrSend(op, opts, cl=cl) |
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# Keep track of submitted jobs
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jex = JobExecutor(cl=cl, opts=opts) |
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for (status, job_id) in result[constants.JOB_IDS_KEY]: |
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jex.AddJobId(None, status, job_id)
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results = jex.GetResults() |
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bad_cnt = len([row for row in results if not row[0]]) |
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if bad_cnt == 0: |
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ToStdout("All instances evacuated successfully.")
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rcode = constants.EXIT_SUCCESS |
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else:
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ToStdout("There were %s errors during the evacuation.", bad_cnt)
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rcode = constants.EXIT_FAILURE |
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return rcode
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def _FormatDict(custom, actual, level=2): |
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"""Helper function to L{cli.FormatParameterDict}.
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@param custom: The customized dict
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@param actual: The fully filled dict
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"""
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buf = StringIO() |
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FormatParameterDict(buf, custom, actual, level=level) |
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return buf.getvalue().rstrip("\n") |
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def GroupInfo(_, args): |
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"""Shows info about node group.
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"""
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cl = GetClient() |
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selected_fields = ["name",
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"ndparams", "custom_ndparams", |
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"diskparams", "custom_diskparams", |
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"ipolicy", "custom_ipolicy"] |
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result = cl.QueryGroups(names=args, fields=selected_fields, |
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use_locking=False)
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for (name,
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ndparams, custom_ndparams, |
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diskparams, custom_diskparams, |
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ipolicy, custom_ipolicy) in result:
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ToStdout("Node group: %s" % name)
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ToStdout(" Node parameters:")
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ToStdout(_FormatDict(custom_ndparams, ndparams)) |
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ToStdout(" Disk parameters:")
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ToStdout(_FormatDict(custom_diskparams, diskparams)) |
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ToStdout(" Instance policy:")
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ToStdout(_FormatDict(custom_ipolicy, ipolicy)) |
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commands = { |
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"add": (
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AddGroup, ARGS_ONE_GROUP, |
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[DRY_RUN_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT, DISK_PARAMS_OPT, |
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HV_STATE_OPT, DISK_STATE_OPT, PRIORITY_OPT, |
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SUBMIT_OPT] + INSTANCE_POLICY_OPTS, |
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"<group_name>", "Add a new node group to the cluster"), |
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"assign-nodes": (
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AssignNodes, ARGS_ONE_GROUP + ARGS_MANY_NODES, |
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[DRY_RUN_OPT, FORCE_OPT, PRIORITY_OPT, SUBMIT_OPT], |
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"<group_name> <node>...", "Assign nodes to a group"), |
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"list": (
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ListGroups, ARGS_MANY_GROUPS, |
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[NOHDR_OPT, SEP_OPT, FIELDS_OPT, VERBOSE_OPT, FORCE_FILTER_OPT], |
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"[<group_name>...]",
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"Lists the node groups in the cluster. The available fields can be shown"
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" using the \"list-fields\" command (see the man page for details)."
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" The default list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS)),
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"list-fields": (
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ListGroupFields, [ArgUnknown()], [NOHDR_OPT, SEP_OPT], "[fields...]",
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"Lists all available fields for node groups"),
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"modify": (
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SetGroupParams, ARGS_ONE_GROUP, |
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[DRY_RUN_OPT, SUBMIT_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT, HV_STATE_OPT, |
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DISK_STATE_OPT, DISK_PARAMS_OPT, PRIORITY_OPT] + INSTANCE_POLICY_OPTS, |
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"<group_name>", "Alters the parameters of a node group"), |
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"remove": (
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RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT, PRIORITY_OPT, SUBMIT_OPT], |
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"[--dry-run] <group-name>",
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"Remove an (empty) node group from the cluster"),
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"rename": (
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RenameGroup, [ArgGroup(min=2, max=2)], |
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[DRY_RUN_OPT, SUBMIT_OPT, PRIORITY_OPT], |
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"[--dry-run] <group-name> <new-name>", "Rename a node group"), |
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"evacuate": (
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EvacuateGroup, [ArgGroup(min=1, max=1)], |
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[TO_GROUP_OPT, IALLOCATOR_OPT, EARLY_RELEASE_OPT, SUBMIT_OPT, PRIORITY_OPT], |
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"[-I <iallocator>] [--to <group>]",
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"Evacuate all instances within a group"),
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"list-tags": (
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ListTags, ARGS_ONE_GROUP, [], |
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"<group_name>", "List the tags of the given group"), |
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"add-tags": (
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AddTags, [ArgGroup(min=1, max=1), ArgUnknown()], |
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[TAG_SRC_OPT, PRIORITY_OPT, SUBMIT_OPT], |
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"<group_name> tag...", "Add tags to the given group"), |
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"remove-tags": (
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RemoveTags, [ArgGroup(min=1, max=1), ArgUnknown()], |
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[TAG_SRC_OPT, PRIORITY_OPT, SUBMIT_OPT], |
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"<group_name> tag...", "Remove tags from the given group"), |
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"info": (
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GroupInfo, ARGS_MANY_GROUPS, [], "<group_name>", "Show group information"), |
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} |
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def Main(): |
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return GenericMain(commands,
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override={"tag_type": constants.TAG_NODEGROUP},
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env_override=_ENV_OVERRIDE) |