root / lib / client / gnt_network.py @ 9394f4d1
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# Copyright (C) 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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"""IP pool 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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import textwrap |
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import itertools |
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from ganeti.cli import * |
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from ganeti import constants |
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from ganeti import opcodes |
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from ganeti import utils |
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from ganeti import errors |
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#: default list of fields for L{ListNetworks}
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_LIST_DEF_FIELDS = ["name", "network", "gateway", |
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"mac_prefix", "group_list", "tags"] |
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def _HandleReservedIPs(ips): |
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if ips is None: |
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return None |
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elif not ips: |
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return []
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else:
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return utils.UnescapeAndSplit(ips, sep=",") |
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def AddNetwork(opts, args): |
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"""Add a network 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 network name 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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(network_name, ) = args |
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if opts.network is None: |
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raise errors.OpPrereqError("The --network option must be given", |
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errors.ECODE_INVAL) |
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if opts.tags is not None: |
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tags = opts.tags.split(",")
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else:
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tags = [] |
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reserved_ips = _HandleReservedIPs(opts.add_reserved_ips) |
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op = opcodes.OpNetworkAdd(network_name=network_name, |
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gateway=opts.gateway, |
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network=opts.network, |
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gateway6=opts.gateway6, |
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network6=opts.network6, |
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mac_prefix=opts.mac_prefix, |
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add_reserved_ips=reserved_ips, |
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conflicts_check=opts.conflicts_check, |
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tags=tags) |
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SubmitOrSend(op, opts) |
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def _GetDefaultGroups(cl, groups): |
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"""Gets list of groups to operate on.
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If C{groups} doesn't contain groups, a list of all groups in the cluster is
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returned.
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@type cl: L{luxi.Client}
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@type groups: list
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@rtype: list
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"""
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if groups:
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return groups
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return list(itertools.chain(*cl.QueryGroups([], ["uuid"], False))) |
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def ConnectNetwork(opts, args): |
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"""Map a network to 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: Network, mode, physlink and node groups
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@rtype: int
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@return: the desired exit code
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"""
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cl = GetClient() |
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(network, mode, link) = args[:3]
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groups = _GetDefaultGroups(cl, args[3:])
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# TODO: Change logic to support "--submit"
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for group in groups: |
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op = opcodes.OpNetworkConnect(group_name=group, |
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network_name=network, |
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network_mode=mode, |
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network_link=link, |
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conflicts_check=opts.conflicts_check) |
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SubmitOpCode(op, opts=opts, cl=cl) |
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def DisconnectNetwork(opts, args): |
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"""Unmap a network from 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: Network and node groups
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@rtype: int
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@return: the desired exit code
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"""
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cl = GetClient() |
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(network, ) = args[:1]
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groups = _GetDefaultGroups(cl, args[1:])
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# TODO: Change logic to support "--submit"
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for group in groups: |
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op = opcodes.OpNetworkDisconnect(group_name=group, |
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network_name=network) |
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SubmitOpCode(op, opts=opts, cl=cl) |
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def ListNetworks(opts, args): |
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"""List Ip pools 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: networks 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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"group_list":
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(lambda data: utils.CommaJoin("%s (%s, %s)" % (name, mode, link) |
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for (name, mode, link) in data), |
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False),
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"inst_list": (",".join, False), |
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"tags": (",".join, False), |
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} |
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return GenericList(constants.QR_NETWORK, desired_fields, args, None, |
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opts.separator, not opts.no_headers,
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verbose=opts.verbose, format_override=fmtoverride) |
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def ListNetworkFields(opts, args): |
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"""List network 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_NETWORK, args, opts.separator,
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not opts.no_headers)
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def ShowNetworkConfig(_, args): |
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"""Show network information.
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@type args: list
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@param args: should either be an empty list, in which case
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we show information about all nodes, or should contain
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a list of networks (names or UUIDs) to be queried for information
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@rtype: int
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@return: the desired exit code
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"""
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cl = GetClient() |
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result = cl.QueryNetworks(fields=["name", "network", "gateway", |
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"network6", "gateway6", |
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"mac_prefix",
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"free_count", "reserved_count", |
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"map", "group_list", "inst_list", |
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"external_reservations",
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"serial_no", "uuid"], |
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names=args, use_locking=False)
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for (name, network, gateway, network6, gateway6,
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mac_prefix, free_count, reserved_count, |
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mapping, group_list, instances, ext_res, serial, uuid) in result:
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size = free_count + reserved_count |
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ToStdout("Network name: %s", name)
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ToStdout("UUID: %s", uuid)
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ToStdout("Serial number: %d", serial)
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ToStdout(" Subnet: %s", network)
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ToStdout(" Gateway: %s", gateway)
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ToStdout(" IPv6 Subnet: %s", network6)
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ToStdout(" IPv6 Gateway: %s", gateway6)
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ToStdout(" Mac Prefix: %s", mac_prefix)
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ToStdout(" Size: %d", size)
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ToStdout(" Free: %d (%.2f%%)", free_count,
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100 * float(free_count) / float(size)) |
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ToStdout(" Usage map:")
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idx = 0
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for line in textwrap.wrap(mapping, width=64): |
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ToStdout(" %s %s %d", str(idx).rjust(3), line.ljust(64), idx + 63) |
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idx += 64
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ToStdout(" (X) used (.) free")
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if ext_res:
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ToStdout(" externally reserved IPs:")
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for line in textwrap.wrap(ext_res, width=64): |
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ToStdout(" %s" % line)
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if group_list:
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ToStdout(" connected to node groups:")
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for group in group_list: |
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ToStdout(" %s", group)
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else:
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ToStdout(" not connected to any node group")
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if instances:
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ToStdout(" used by %d instances:", len(instances)) |
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for inst in instances: |
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((ips, networks), ) = cl.QueryInstances([inst], |
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["nic.ips", "nic.networks"], |
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use_locking=False)
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l = lambda value: ", ".join(str(idx) + ":" + str(ip) |
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for idx, (ip, net) in enumerate(value) |
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if net == uuid)
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ToStdout(" %s : %s", inst, l(zip(ips, networks))) |
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else:
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ToStdout(" not used by any instances")
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def SetNetworkParams(opts, args): |
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"""Modifies an IP address pool'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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# TODO: add "network": opts.network,
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all_changes = { |
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"gateway": opts.gateway,
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"add_reserved_ips": _HandleReservedIPs(opts.add_reserved_ips),
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"remove_reserved_ips": _HandleReservedIPs(opts.remove_reserved_ips),
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"mac_prefix": opts.mac_prefix,
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"gateway6": opts.gateway6,
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"network6": opts.network6,
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} |
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if all_changes.values().count(None) == len(all_changes): |
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ToStderr("Please give at least one of the parameters.")
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return 1 |
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# pylint: disable=W0142
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op = opcodes.OpNetworkSetParams(network_name=args[0], **all_changes)
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# TODO: add feedback to user, e.g. list the modifications
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SubmitOrSend(op, opts) |
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def RemoveNetwork(opts, args): |
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"""Remove an IP address pool 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 id of the IP address pool 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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(network_name,) = args |
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op = opcodes.OpNetworkRemove(network_name=network_name, force=opts.force) |
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SubmitOrSend(op, opts) |
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commands = { |
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"add": (
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AddNetwork, ARGS_ONE_NETWORK, |
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[DRY_RUN_OPT, NETWORK_OPT, GATEWAY_OPT, ADD_RESERVED_IPS_OPT, |
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MAC_PREFIX_OPT, NETWORK6_OPT, GATEWAY6_OPT, |
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NOCONFLICTSCHECK_OPT, TAG_ADD_OPT, PRIORITY_OPT, SUBMIT_OPT], |
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"<network_name>", "Add a new IP network to the cluster"), |
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"list": (
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ListNetworks, ARGS_MANY_NETWORKS, |
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[NOHDR_OPT, SEP_OPT, FIELDS_OPT, VERBOSE_OPT], |
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"[<network_id>...]",
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"Lists the IP networks 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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ListNetworkFields, [ArgUnknown()], [NOHDR_OPT, SEP_OPT], "[fields...]",
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"Lists all available fields for networks"),
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"info": (
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ShowNetworkConfig, ARGS_MANY_NETWORKS, [], |
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"[<network_name>...]", "Show information about the network(s)"), |
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"modify": (
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SetNetworkParams, ARGS_ONE_NETWORK, |
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[DRY_RUN_OPT, SUBMIT_OPT, ADD_RESERVED_IPS_OPT, REMOVE_RESERVED_IPS_OPT, |
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GATEWAY_OPT, MAC_PREFIX_OPT, NETWORK6_OPT, GATEWAY6_OPT, |
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PRIORITY_OPT], |
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"<network_name>", "Alters the parameters of a network"), |
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"connect": (
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ConnectNetwork, |
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[ArgNetwork(min=1, max=1), |
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ArgChoice(min=1, max=1, choices=constants.NIC_VALID_MODES), |
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ArgUnknown(min=1, max=1), |
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ArgGroup()], |
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[NOCONFLICTSCHECK_OPT, PRIORITY_OPT], |
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"<network_name> <mode> <link> [<node_group>...]",
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"Map a given network to the specified node group"
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" with given mode and link (netparams)"),
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"disconnect": (
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DisconnectNetwork, |
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[ArgNetwork(min=1, max=1), ArgGroup()], |
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[PRIORITY_OPT], |
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"<network_name> [<node_group>...]",
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"Unmap a given network from a specified node group"),
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"remove": (
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RemoveNetwork, ARGS_ONE_NETWORK, |
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[FORCE_OPT, DRY_RUN_OPT, SUBMIT_OPT, PRIORITY_OPT], |
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"[--dry-run] <network_id>",
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"Remove an (empty) network from the cluster"),
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"list-tags": (
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ListTags, ARGS_ONE_NETWORK, [], |
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"<network_name>", "List the tags of the given network"), |
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"add-tags": (
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AddTags, [ArgNetwork(min=1, max=1), ArgUnknown()], |
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[TAG_SRC_OPT, PRIORITY_OPT, SUBMIT_OPT], |
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"<network_name> tag...", "Add tags to the given network"), |
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"remove-tags": (
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RemoveTags, [ArgNetwork(min=1, max=1), ArgUnknown()], |
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[TAG_SRC_OPT, PRIORITY_OPT, SUBMIT_OPT], |
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"<network_name> tag...", "Remove tags from given network"), |
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} |
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def Main(): |
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return GenericMain(commands, override={"tag_type": constants.TAG_NETWORK}) |