root / lib / client / gnt_network.py @ 267fa66c
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# Copyright (C) 2011 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-msg=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 opcodes |
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from ganeti import utils |
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from textwrap import wrap |
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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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"network_type", "mac_prefix", "group_list"] |
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def _HandleReservedIPs(ips): |
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if ips is not None: |
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if ips == "": |
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return []
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else:
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return utils.UnescapeAndSplit(ips, sep=",") |
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return None |
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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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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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network_type=opts.network_type, |
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add_reserved_ips=_HandleReservedIPs(opts.add_reserved_ips)) |
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SubmitOpCode(op, opts=opts) |
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def MapNetwork(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: a list of length 3 with network, nodegroup, mode, physlink
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@rtype: int
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@return: the desired exit code
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"""
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network = args[0]
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groups = args[1]
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mode = args[2]
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link = args[3]
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#TODO: allow comma separated group names
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if groups == 'all': |
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cl = GetClient() |
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(groups, ) = cl.QueryGroups([], ['name'], False) |
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else:
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groups = [groups] |
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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) |
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def UnmapNetwork(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: a list of length 3 with network, nodegorup
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@rtype: int
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@return: the desired exit code
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"""
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network = args[0]
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groups = args[1]
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#TODO: allow comma separated group names
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if groups == 'all': |
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cl = GetClient() |
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(groups, ) = cl.QueryGroups([], ['name'], False) |
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else:
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groups = [groups] |
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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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conflicts_check=opts.conflicts_check) |
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SubmitOpCode(op, opts=opts) |
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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": (",".join, False), |
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"inst_list": (",".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(opts, args): |
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"""Show network information.
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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 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", "network_type", |
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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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names=args, use_locking=False)
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for (name, network, gateway, network6, gateway6,
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mac_prefix, network_type, free_count, reserved_count, |
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map, group_list, instances, ext_res) 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(" subnet: %s", network)
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ToStdout(" gateway: %s", gateway)
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ToStdout(" subnet6: %s", network6)
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ToStdout(" gateway6: %s", gateway6)
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ToStdout(" mac prefix: %s", mac_prefix)
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ToStdout(" type: %s", network_type)
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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 wrap(map, 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 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(`idx`+":"+str(ip) |
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for idx, (ip, net) in enumerate(value) |
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if net == name)
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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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"network_type": opts.network_type,
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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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op = opcodes.OpNetworkSetParams(network_name=args[0],
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# pylint: disable-msg=W0142
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**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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SubmitOpCode(op, opts=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, NETWORK_TYPE_OPT, NETWORK6_OPT, GATEWAY6_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, NETWORK_TYPE_OPT, NETWORK6_OPT, GATEWAY6_OPT], |
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"<network_name>", "Alters the parameters of a network"), |
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"connect": (
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MapNetwork, |
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[ArgNetwork(min=1, max=1), ArgGroup(min=1, max=1), |
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ArgUnknown(min=1, max=1), ArgUnknown(min=1, max=1)], |
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[NOCONFLICTSCHECK_OPT], |
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"<network_name> <node_group> <mode> <link>",
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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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UnmapNetwork, |
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[ArgNetwork(min=1, max=1), ArgGroup(min=1, max=1)], |
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[NOCONFLICTSCHECK_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, [FORCE_OPT, DRY_RUN_OPT], |
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"[--dry-run] <network_id>",
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"Remove an (empty) network from the cluster"),
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} |
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def Main(): |
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return GenericMain(commands)
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