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#!/usr/bin/python |
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# |
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|
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# Copyright (C) 2006, 2007 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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|
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|
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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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|
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import sys |
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import os.path |
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import time |
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|
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from ganeti.cli import * |
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from ganeti import opcodes |
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from ganeti import constants |
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from ganeti import errors |
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from ganeti import utils |
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from ganeti import bootstrap |
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from ganeti import ssh |
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from ganeti import objects |
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|
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|
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@UsesRPC |
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def InitCluster(opts, args): |
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"""Initialize the cluster. |
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|
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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 desired |
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cluster name |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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if not opts.lvm_storage and opts.vg_name: |
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ToStderr("Options --no-lvm-storage and --vg-name conflict.") |
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return 1 |
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|
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vg_name = opts.vg_name |
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if opts.lvm_storage and not opts.vg_name: |
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vg_name = constants.DEFAULT_VG |
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|
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hvlist = opts.enabled_hypervisors |
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if hvlist is None: |
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hvlist = constants.DEFAULT_ENABLED_HYPERVISOR |
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hvlist = hvlist.split(",") |
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|
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hvparams = dict(opts.hvparams) |
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beparams = opts.beparams |
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nicparams = opts.nicparams |
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|
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# prepare beparams dict |
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beparams = objects.FillDict(constants.BEC_DEFAULTS, beparams) |
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utils.ForceDictType(beparams, constants.BES_PARAMETER_TYPES) |
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|
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# prepare nicparams dict |
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nicparams = objects.FillDict(constants.NICC_DEFAULTS, nicparams) |
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utils.ForceDictType(nicparams, constants.NICS_PARAMETER_TYPES) |
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|
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# prepare hvparams dict |
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for hv in constants.HYPER_TYPES: |
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if hv not in hvparams: |
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hvparams[hv] = {} |
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hvparams[hv] = objects.FillDict(constants.HVC_DEFAULTS[hv], hvparams[hv]) |
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utils.ForceDictType(hvparams[hv], constants.HVS_PARAMETER_TYPES) |
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|
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if opts.candidate_pool_size is None: |
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opts.candidate_pool_size = constants.MASTER_POOL_SIZE_DEFAULT |
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|
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if opts.mac_prefix is None: |
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opts.mac_prefix = constants.DEFAULT_MAC_PREFIX |
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|
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bootstrap.InitCluster(cluster_name=args[0], |
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secondary_ip=opts.secondary_ip, |
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vg_name=vg_name, |
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mac_prefix=opts.mac_prefix, |
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master_netdev=opts.master_netdev, |
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file_storage_dir=opts.file_storage_dir, |
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enabled_hypervisors=hvlist, |
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hvparams=hvparams, |
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beparams=beparams, |
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nicparams=nicparams, |
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candidate_pool_size=opts.candidate_pool_size, |
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modify_etc_hosts=opts.modify_etc_hosts, |
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) |
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op = opcodes.OpPostInitCluster() |
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SubmitOpCode(op) |
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return 0 |
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|
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|
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@UsesRPC |
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def DestroyCluster(opts, args): |
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"""Destroy the cluster. |
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|
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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 be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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if not opts.yes_do_it: |
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ToStderr("Destroying a cluster is irreversible. If you really want" |
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" destroy this cluster, supply the --yes-do-it option.") |
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return 1 |
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|
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op = opcodes.OpDestroyCluster() |
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master = SubmitOpCode(op) |
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# if we reached this, the opcode didn't fail; we can proceed to |
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# shutdown all the daemons |
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bootstrap.FinalizeClusterDestroy(master) |
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return 0 |
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|
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|
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def RenameCluster(opts, args): |
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"""Rename the cluster. |
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|
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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 new cluster name |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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name = args[0] |
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if not opts.force: |
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usertext = ("This will rename the cluster to '%s'. If you are connected" |
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" over the network to the cluster name, the operation is very" |
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" dangerous as the IP address will be removed from the node" |
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" and the change may not go through. Continue?") % name |
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if not AskUser(usertext): |
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return 1 |
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|
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op = opcodes.OpRenameCluster(name=name) |
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SubmitOpCode(op) |
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return 0 |
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|
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|
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def RedistributeConfig(opts, args): |
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"""Forces push of the cluster configuration. |
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|
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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: empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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op = opcodes.OpRedistributeConfig() |
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SubmitOrSend(op, opts) |
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return 0 |
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|
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|
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def ShowClusterVersion(opts, args): |
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"""Write version of ganeti software to the standard output. |
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|
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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 be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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cl = GetClient() |
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result = cl.QueryClusterInfo() |
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ToStdout("Software version: %s", result["software_version"]) |
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ToStdout("Internode protocol: %s", result["protocol_version"]) |
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ToStdout("Configuration format: %s", result["config_version"]) |
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ToStdout("OS api version: %s", result["os_api_version"]) |
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ToStdout("Export interface: %s", result["export_version"]) |
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return 0 |
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|
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|
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def ShowClusterMaster(opts, args): |
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"""Write name of master node to the standard output. |
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|
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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 be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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master = bootstrap.GetMaster() |
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ToStdout(master) |
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return 0 |
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|
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def _PrintGroupedParams(paramsdict): |
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"""Print Grouped parameters (be, nic, disk) by group. |
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|
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@type paramsdict: dict of dicts |
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@param paramsdict: {group: {param: value, ...}, ...} |
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|
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""" |
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for gr_name, gr_dict in paramsdict.items(): |
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ToStdout(" - %s:", gr_name) |
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for item, val in gr_dict.iteritems(): |
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ToStdout(" %s: %s", item, val) |
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|
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def ShowClusterConfig(opts, args): |
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"""Shows cluster information. |
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|
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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 be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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cl = GetClient() |
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result = cl.QueryClusterInfo() |
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|
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ToStdout("Cluster name: %s", result["name"]) |
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|
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ToStdout("Creation time: %s", utils.FormatTime(result["ctime"])) |
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ToStdout("Modification time: %s", utils.FormatTime(result["mtime"])) |
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|
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ToStdout("Master node: %s", result["master"]) |
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|
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ToStdout("Architecture (this node): %s (%s)", |
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result["architecture"][0], result["architecture"][1]) |
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|
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if result["tags"]: |
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tags = ", ".join(utils.NiceSort(result["tags"])) |
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else: |
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tags = "(none)" |
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|
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ToStdout("Tags: %s", tags) |
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|
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ToStdout("Default hypervisor: %s", result["default_hypervisor"]) |
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ToStdout("Enabled hypervisors: %s", ", ".join(result["enabled_hypervisors"])) |
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|
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ToStdout("Hypervisor parameters:") |
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_PrintGroupedParams(result["hvparams"]) |
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|
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ToStdout("Cluster parameters:") |
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ToStdout(" - candidate pool size: %s", result["candidate_pool_size"]) |
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ToStdout(" - master netdev: %s", result["master_netdev"]) |
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ToStdout(" - lvm volume group: %s", result["volume_group_name"]) |
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ToStdout(" - file storage path: %s", result["file_storage_dir"]) |
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|
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ToStdout("Default instance parameters:") |
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_PrintGroupedParams(result["beparams"]) |
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|
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ToStdout("Default nic parameters:") |
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_PrintGroupedParams(result["nicparams"]) |
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|
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return 0 |
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|
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|
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def ClusterCopyFile(opts, args): |
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"""Copy a file from master to some nodes. |
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|
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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 path of |
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the file to be copied |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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filename = args[0] |
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if not os.path.exists(filename): |
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raise errors.OpPrereqError("No such filename '%s'" % filename) |
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|
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cl = GetClient() |
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|
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myname = utils.HostInfo().name |
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|
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cluster_name = cl.QueryConfigValues(["cluster_name"])[0] |
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|
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results = GetOnlineNodes(nodes=opts.nodes, cl=cl) |
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results = [name for name in results if name != myname] |
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|
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srun = ssh.SshRunner(cluster_name=cluster_name) |
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for node in results: |
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if not srun.CopyFileToNode(node, filename): |
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ToStderr("Copy of file %s to node %s failed", filename, node) |
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|
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return 0 |
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|
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|
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def RunClusterCommand(opts, args): |
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"""Run a command on some nodes. |
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|
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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 the command to be run and its arguments |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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cl = GetClient() |
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|
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command = " ".join(args) |
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|
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nodes = GetOnlineNodes(nodes=opts.nodes, cl=cl) |
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|
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cluster_name, master_node = cl.QueryConfigValues(["cluster_name", |
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"master_node"]) |
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|
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srun = ssh.SshRunner(cluster_name=cluster_name) |
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|
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# Make sure master node is at list end |
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if master_node in nodes: |
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nodes.remove(master_node) |
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nodes.append(master_node) |
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|
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for name in nodes: |
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result = srun.Run(name, "root", command) |
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ToStdout("------------------------------------------------") |
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ToStdout("node: %s", name) |
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ToStdout("%s", result.output) |
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ToStdout("return code = %s", result.exit_code) |
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|
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return 0 |
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|
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|
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def VerifyCluster(opts, args): |
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"""Verify integrity of cluster, performing various test on nodes. |
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|
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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 be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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skip_checks = [] |
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if opts.skip_nplusone_mem: |
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skip_checks.append(constants.VERIFY_NPLUSONE_MEM) |
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op = opcodes.OpVerifyCluster(skip_checks=skip_checks, |
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verbose=opts.verbose, |
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error_codes=opts.error_codes, |
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debug_simulate_errors=opts.simulate_errors) |
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if SubmitOpCode(op): |
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return 0 |
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else: |
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return 1 |
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|
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|
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def VerifyDisks(opts, args): |
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"""Verify integrity of cluster disks. |
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|
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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 be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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op = opcodes.OpVerifyDisks() |
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result = SubmitOpCode(op) |
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if not isinstance(result, (list, tuple)) or len(result) != 3: |
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raise errors.ProgrammerError("Unknown result type for OpVerifyDisks") |
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|
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bad_nodes, instances, missing = result |
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|
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retcode = constants.EXIT_SUCCESS |
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|
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if bad_nodes: |
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for node, text in bad_nodes.items(): |
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ToStdout("Error gathering data on node %s: %s", |
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node, utils.SafeEncode(text[-400:])) |
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retcode |= 1 |
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ToStdout("You need to fix these nodes first before fixing instances") |
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|
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if instances: |
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for iname in instances: |
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if iname in missing: |
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continue |
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op = opcodes.OpActivateInstanceDisks(instance_name=iname) |
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try: |
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ToStdout("Activating disks for instance '%s'", iname) |
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SubmitOpCode(op) |
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except errors.GenericError, err: |
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nret, msg = FormatError(err) |
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retcode |= nret |
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ToStderr("Error activating disks for instance %s: %s", iname, msg) |
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|
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if missing: |
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for iname, ival in missing.iteritems(): |
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all_missing = utils.all(ival, lambda x: x[0] in bad_nodes) |
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if all_missing: |
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ToStdout("Instance %s cannot be verified as it lives on" |
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" broken nodes", iname) |
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else: |
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ToStdout("Instance %s has missing logical volumes:", iname) |
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ival.sort() |
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for node, vol in ival: |
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if node in bad_nodes: |
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ToStdout("\tbroken node %s /dev/xenvg/%s", node, vol) |
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else: |
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ToStdout("\t%s /dev/xenvg/%s", node, vol) |
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ToStdout("You need to run replace_disks for all the above" |
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" instances, if this message persist after fixing nodes.") |
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retcode |= 1 |
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|
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return retcode |
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|
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|
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def RepairDiskSizes(opts, args): |
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"""Verify sizes of cluster disks. |
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|
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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: optional list of instances to restrict check to |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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op = opcodes.OpRepairDiskSizes(instances=args) |
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SubmitOpCode(op) |
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|
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|
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@UsesRPC |
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def MasterFailover(opts, args): |
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"""Failover the master node. |
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|
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This command, when run on a non-master node, will cause the current |
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master to cease being master, and the non-master to become new |
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master. |
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|
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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 be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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if opts.no_voting: |
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usertext = ("This will perform the failover even if most other nodes" |
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" are down, or if this node is outdated. This is dangerous" |
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" as it can lead to a non-consistent cluster. Check the" |
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" gnt-cluster(8) man page before proceeding. Continue?") |
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if not AskUser(usertext): |
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return 1 |
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|
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return bootstrap.MasterFailover(no_voting=opts.no_voting) |
457 |
|
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|
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def SearchTags(opts, args): |
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"""Searches the tags on all the cluster. |
461 |
|
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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 tag pattern |
465 |
@rtype: int |
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@return: the desired exit code |
467 |
|
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""" |
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op = opcodes.OpSearchTags(pattern=args[0]) |
470 |
result = SubmitOpCode(op) |
471 |
if not result: |
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return 1 |
473 |
result = list(result) |
474 |
result.sort() |
475 |
for path, tag in result: |
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ToStdout("%s %s", path, tag) |
477 |
|
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|
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def SetClusterParams(opts, args): |
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"""Modify the cluster. |
481 |
|
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@param opts: the command line options selected by the user |
483 |
@type args: list |
484 |
@param args: should be an empty list |
485 |
@rtype: int |
486 |
@return: the desired exit code |
487 |
|
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""" |
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if not (not opts.lvm_storage or opts.vg_name or |
490 |
opts.enabled_hypervisors or opts.hvparams or |
491 |
opts.beparams or opts.nicparams or |
492 |
opts.candidate_pool_size is not None): |
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ToStderr("Please give at least one of the parameters.") |
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return 1 |
495 |
|
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vg_name = opts.vg_name |
497 |
if not opts.lvm_storage and opts.vg_name: |
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ToStdout("Options --no-lvm-storage and --vg-name conflict.") |
499 |
return 1 |
500 |
elif not opts.lvm_storage: |
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vg_name = '' |
502 |
|
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hvlist = opts.enabled_hypervisors |
504 |
if hvlist is not None: |
505 |
hvlist = hvlist.split(",") |
506 |
|
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# a list of (name, dict) we can pass directly to dict() (or []) |
508 |
hvparams = dict(opts.hvparams) |
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for hv, hv_params in hvparams.iteritems(): |
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utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES) |
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|
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beparams = opts.beparams |
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utils.ForceDictType(beparams, constants.BES_PARAMETER_TYPES) |
514 |
|
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nicparams = opts.nicparams |
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utils.ForceDictType(nicparams, constants.NICS_PARAMETER_TYPES) |
517 |
|
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op = opcodes.OpSetClusterParams(vg_name=vg_name, |
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enabled_hypervisors=hvlist, |
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hvparams=hvparams, |
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beparams=beparams, |
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nicparams=nicparams, |
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candidate_pool_size=opts.candidate_pool_size) |
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SubmitOpCode(op) |
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return 0 |
526 |
|
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|
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def QueueOps(opts, args): |
529 |
"""Queue operations. |
530 |
|
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@param opts: the command line options selected by the user |
532 |
@type args: list |
533 |
@param args: should contain only one element, the subcommand |
534 |
@rtype: int |
535 |
@return: the desired exit code |
536 |
|
537 |
""" |
538 |
command = args[0] |
539 |
client = GetClient() |
540 |
if command in ("drain", "undrain"): |
541 |
drain_flag = command == "drain" |
542 |
client.SetQueueDrainFlag(drain_flag) |
543 |
elif command == "info": |
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result = client.QueryConfigValues(["drain_flag"]) |
545 |
if result[0]: |
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val = "set" |
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else: |
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val = "unset" |
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ToStdout("The drain flag is %s" % val) |
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else: |
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raise errors.OpPrereqError("Command '%s' is not valid." % command) |
552 |
|
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return 0 |
554 |
|
555 |
|
556 |
def _ShowWatcherPause(until): |
557 |
if until is None or until < time.time(): |
558 |
ToStdout("The watcher is not paused.") |
559 |
else: |
560 |
ToStdout("The watcher is paused until %s.", time.ctime(until)) |
561 |
|
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|
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def WatcherOps(opts, args): |
564 |
"""Watcher operations. |
565 |
|
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@param opts: the command line options selected by the user |
567 |
@type args: list |
568 |
@param args: should contain only one element, the subcommand |
569 |
@rtype: int |
570 |
@return: the desired exit code |
571 |
|
572 |
""" |
573 |
command = args[0] |
574 |
client = GetClient() |
575 |
|
576 |
if command == "continue": |
577 |
client.SetWatcherPause(None) |
578 |
ToStdout("The watcher is no longer paused.") |
579 |
|
580 |
elif command == "pause": |
581 |
if len(args) < 2: |
582 |
raise errors.OpPrereqError("Missing pause duration") |
583 |
|
584 |
result = client.SetWatcherPause(time.time() + ParseTimespec(args[1])) |
585 |
_ShowWatcherPause(result) |
586 |
|
587 |
elif command == "info": |
588 |
result = client.QueryConfigValues(["watcher_pause"]) |
589 |
_ShowWatcherPause(result) |
590 |
|
591 |
else: |
592 |
raise errors.OpPrereqError("Command '%s' is not valid." % command) |
593 |
|
594 |
return 0 |
595 |
|
596 |
|
597 |
commands = { |
598 |
'init': ( |
599 |
InitCluster, [ArgHost(min=1, max=1)], |
600 |
[BACKEND_OPT, CP_SIZE_OPT, ENABLED_HV_OPT, GLOBAL_FILEDIR_OPT, |
601 |
HVLIST_OPT, MAC_PREFIX_OPT, MASTER_NETDEV_OPT, NIC_PARAMS_OPT, |
602 |
NOLVM_STORAGE_OPT, NOMODIFY_ETCHOSTS_OPT, SECONDARY_IP_OPT, VG_NAME_OPT], |
603 |
"[opts...] <cluster_name>", "Initialises a new cluster configuration"), |
604 |
'destroy': ( |
605 |
DestroyCluster, ARGS_NONE, [YES_DOIT_OPT], |
606 |
"", "Destroy cluster"), |
607 |
'rename': ( |
608 |
RenameCluster, [ArgHost(min=1, max=1)], |
609 |
[FORCE_OPT], |
610 |
"<new_name>", |
611 |
"Renames the cluster"), |
612 |
'redist-conf': ( |
613 |
RedistributeConfig, ARGS_NONE, [SUBMIT_OPT], |
614 |
"", "Forces a push of the configuration file and ssconf files" |
615 |
" to the nodes in the cluster"), |
616 |
'verify': ( |
617 |
VerifyCluster, ARGS_NONE, |
618 |
[VERBOSE_OPT, DEBUG_SIMERR_OPT, ERROR_CODES_OPT, NONPLUS1_OPT], |
619 |
"", "Does a check on the cluster configuration"), |
620 |
'verify-disks': ( |
621 |
VerifyDisks, ARGS_NONE, [], |
622 |
"", "Does a check on the cluster disk status"), |
623 |
'repair-disk-sizes': ( |
624 |
RepairDiskSizes, ARGS_MANY_INSTANCES, [], |
625 |
"", "Updates mismatches in recorded disk sizes"), |
626 |
'masterfailover': ( |
627 |
MasterFailover, ARGS_NONE, [NOVOTING_OPT], |
628 |
"", "Makes the current node the master"), |
629 |
'version': ( |
630 |
ShowClusterVersion, ARGS_NONE, [], |
631 |
"", "Shows the cluster version"), |
632 |
'getmaster': ( |
633 |
ShowClusterMaster, ARGS_NONE, [], |
634 |
"", "Shows the cluster master"), |
635 |
'copyfile': ( |
636 |
ClusterCopyFile, [ArgFile(min=1, max=1)], |
637 |
[NODE_LIST_OPT], |
638 |
"[-n node...] <filename>", "Copies a file to all (or only some) nodes"), |
639 |
'command': ( |
640 |
RunClusterCommand, [ArgCommand(min=1)], |
641 |
[NODE_LIST_OPT], |
642 |
"[-n node...] <command>", "Runs a command on all (or only some) nodes"), |
643 |
'info': ( |
644 |
ShowClusterConfig, ARGS_NONE, [], |
645 |
"", "Show cluster configuration"), |
646 |
'list-tags': ( |
647 |
ListTags, ARGS_NONE, [], "", "List the tags of the cluster"), |
648 |
'add-tags': ( |
649 |
AddTags, [ArgUnknown()], [TAG_SRC_OPT], |
650 |
"tag...", "Add tags to the cluster"), |
651 |
'remove-tags': ( |
652 |
RemoveTags, [ArgUnknown()], [TAG_SRC_OPT], |
653 |
"tag...", "Remove tags from the cluster"), |
654 |
'search-tags': ( |
655 |
SearchTags, [ArgUnknown(min=1, max=1)], |
656 |
[], "", "Searches the tags on all objects on" |
657 |
" the cluster for a given pattern (regex)"), |
658 |
'queue': ( |
659 |
QueueOps, |
660 |
[ArgChoice(min=1, max=1, choices=["drain", "undrain", "info"])], |
661 |
[], "drain|undrain|info", "Change queue properties"), |
662 |
'watcher': ( |
663 |
WatcherOps, |
664 |
[ArgChoice(min=1, max=1, choices=["pause", "continue", "info"]), |
665 |
ArgSuggest(min=0, max=1, choices=["30m", "1h", "4h"])], |
666 |
[], |
667 |
"{pause <timespec>|continue|info}", "Change watcher properties"), |
668 |
'modify': ( |
669 |
SetClusterParams, ARGS_NONE, |
670 |
[BACKEND_OPT, CP_SIZE_OPT, ENABLED_HV_OPT, HVLIST_OPT, |
671 |
NIC_PARAMS_OPT, NOLVM_STORAGE_OPT, VG_NAME_OPT], |
672 |
"[opts...]", |
673 |
"Alters the parameters of the cluster"), |
674 |
} |
675 |
|
676 |
if __name__ == '__main__': |
677 |
sys.exit(GenericMain(commands, override={"tag_type": constants.TAG_CLUSTER})) |