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#!/usr/bin/python |
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# |
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|
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# Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 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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"""Tool to upgrade the configuration file. |
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|
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This code handles only the types supported by simplejson. As an |
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example, 'set' is a 'list'. |
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|
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""" |
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|
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|
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import os |
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import os.path |
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import sys |
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import optparse |
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import logging |
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import time |
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from cStringIO import StringIO |
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|
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from ganeti import constants |
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from ganeti import serializer |
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from ganeti import utils |
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from ganeti import cli |
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from ganeti import bootstrap |
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from ganeti import config |
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from ganeti import netutils |
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from ganeti import pathutils |
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|
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from ganeti.utils import version |
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|
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|
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options = None |
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args = None |
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|
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|
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#: Target major version we will upgrade to |
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TARGET_MAJOR = 2 |
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#: Target minor version we will upgrade to |
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TARGET_MINOR = 10 |
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#: Target major version for downgrade |
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DOWNGRADE_MAJOR = 2 |
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#: Target minor version for downgrade |
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DOWNGRADE_MINOR = 9 |
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|
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|
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class Error(Exception): |
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"""Generic exception""" |
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pass |
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|
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|
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def SetupLogging(): |
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"""Configures the logging module. |
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|
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""" |
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formatter = logging.Formatter("%(asctime)s: %(message)s") |
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|
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stderr_handler = logging.StreamHandler() |
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stderr_handler.setFormatter(formatter) |
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if options.debug: |
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stderr_handler.setLevel(logging.NOTSET) |
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elif options.verbose: |
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stderr_handler.setLevel(logging.INFO) |
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else: |
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stderr_handler.setLevel(logging.WARNING) |
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|
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root_logger = logging.getLogger("") |
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root_logger.setLevel(logging.NOTSET) |
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root_logger.addHandler(stderr_handler) |
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|
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|
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def CheckHostname(path): |
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"""Ensures hostname matches ssconf value. |
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|
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@param path: Path to ssconf file |
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|
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""" |
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ssconf_master_node = utils.ReadOneLineFile(path) |
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hostname = netutils.GetHostname().name |
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|
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if ssconf_master_node == hostname: |
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return True |
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|
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logging.warning("Warning: ssconf says master node is '%s', but this" |
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" machine's name is '%s'; this tool must be run on" |
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" the master node", ssconf_master_node, hostname) |
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return False |
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|
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|
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def _FillIPolicySpecs(default_ipolicy, ipolicy): |
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if "minmax" in ipolicy: |
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for (key, spec) in ipolicy["minmax"][0].items(): |
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for (par, val) in default_ipolicy["minmax"][0][key].items(): |
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if par not in spec: |
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spec[par] = val |
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|
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|
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def UpgradeIPolicy(ipolicy, default_ipolicy, isgroup): |
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minmax_keys = ["min", "max"] |
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if any((k in ipolicy) for k in minmax_keys): |
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minmax = {} |
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for key in minmax_keys: |
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if key in ipolicy: |
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if ipolicy[key]: |
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minmax[key] = ipolicy[key] |
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del ipolicy[key] |
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if minmax: |
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ipolicy["minmax"] = [minmax] |
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if isgroup and "std" in ipolicy: |
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del ipolicy["std"] |
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_FillIPolicySpecs(default_ipolicy, ipolicy) |
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|
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|
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def UpgradeNetworks(config_data): |
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networks = config_data.get("networks", None) |
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if not networks: |
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config_data["networks"] = {} |
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|
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|
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def UpgradeCluster(config_data): |
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cluster = config_data.get("cluster", None) |
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if cluster is None: |
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raise Error("Cannot find cluster") |
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ipolicy = cluster.setdefault("ipolicy", None) |
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if ipolicy: |
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UpgradeIPolicy(ipolicy, constants.IPOLICY_DEFAULTS, False) |
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|
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|
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def UpgradeGroups(config_data): |
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cl_ipolicy = config_data["cluster"].get("ipolicy") |
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for group in config_data["nodegroups"].values(): |
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networks = group.get("networks", None) |
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if not networks: |
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group["networks"] = {} |
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ipolicy = group.get("ipolicy", None) |
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if ipolicy: |
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if cl_ipolicy is None: |
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raise Error("A group defines an instance policy but there is no" |
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" instance policy at cluster level") |
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UpgradeIPolicy(ipolicy, cl_ipolicy, True) |
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|
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|
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def GetExclusiveStorageValue(config_data): |
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"""Return a conservative value of the exclusive_storage flag. |
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|
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Return C{True} if the cluster or at least a nodegroup have the flag set. |
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|
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""" |
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ret = False |
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cluster = config_data["cluster"] |
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ndparams = cluster.get("ndparams") |
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if ndparams is not None and ndparams.get("exclusive_storage"): |
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ret = True |
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for group in config_data["nodegroups"].values(): |
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ndparams = group.get("ndparams") |
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if ndparams is not None and ndparams.get("exclusive_storage"): |
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ret = True |
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return ret |
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|
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|
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def RemovePhysicalId(disk): |
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if "children" in disk: |
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for d in disk["children"]: |
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RemovePhysicalId(d) |
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if "physical_id" in disk: |
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del disk["physical_id"] |
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|
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|
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def UpgradeInstances(config_data): |
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network2uuid = dict((n["name"], n["uuid"]) |
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for n in config_data["networks"].values()) |
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if "instances" not in config_data: |
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raise Error("Can't find the 'instances' key in the configuration!") |
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|
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missing_spindles = False |
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for instance, iobj in config_data["instances"].items(): |
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for nic in iobj["nics"]: |
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name = nic.get("network", None) |
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if name: |
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uuid = network2uuid.get(name, None) |
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if uuid: |
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print("NIC with network name %s found." |
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" Substituting with uuid %s." % (name, uuid)) |
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nic["network"] = uuid |
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|
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if "disks" not in iobj: |
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raise Error("Instance '%s' doesn't have a disks entry?!" % instance) |
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disks = iobj["disks"] |
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for idx, dobj in enumerate(disks): |
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RemovePhysicalId(dobj) |
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|
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expected = "disk/%s" % idx |
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current = dobj.get("iv_name", "") |
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if current != expected: |
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logging.warning("Updating iv_name for instance %s/disk %s" |
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" from '%s' to '%s'", |
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instance, idx, current, expected) |
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dobj["iv_name"] = expected |
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if not "spindles" in dobj: |
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missing_spindles = True |
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|
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if GetExclusiveStorageValue(config_data) and missing_spindles: |
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# We cannot be sure that the instances that are missing spindles have |
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# exclusive storage enabled (the check would be more complicated), so we |
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# give a noncommittal message |
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logging.warning("Some instance disks could be needing to update the" |
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" spindles parameter; you can check by running" |
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" 'gnt-cluster verify', and fix any problem with" |
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" 'gnt-cluster repair-disk-sizes'") |
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|
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|
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def UpgradeRapiUsers(): |
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if (os.path.isfile(options.RAPI_USERS_FILE_PRE24) and |
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not os.path.islink(options.RAPI_USERS_FILE_PRE24)): |
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if os.path.exists(options.RAPI_USERS_FILE): |
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raise Error("Found pre-2.4 RAPI users file at %s, but another file" |
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" already exists at %s" % |
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(options.RAPI_USERS_FILE_PRE24, options.RAPI_USERS_FILE)) |
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logging.info("Found pre-2.4 RAPI users file at %s, renaming to %s", |
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options.RAPI_USERS_FILE_PRE24, options.RAPI_USERS_FILE) |
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if not options.dry_run: |
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utils.RenameFile(options.RAPI_USERS_FILE_PRE24, options.RAPI_USERS_FILE, |
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mkdir=True, mkdir_mode=0750) |
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|
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# Create a symlink for RAPI users file |
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if (not (os.path.islink(options.RAPI_USERS_FILE_PRE24) or |
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os.path.isfile(options.RAPI_USERS_FILE_PRE24)) and |
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os.path.isfile(options.RAPI_USERS_FILE)): |
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logging.info("Creating symlink from %s to %s", |
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options.RAPI_USERS_FILE_PRE24, options.RAPI_USERS_FILE) |
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if not options.dry_run: |
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os.symlink(options.RAPI_USERS_FILE, options.RAPI_USERS_FILE_PRE24) |
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|
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|
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def UpgradeWatcher(): |
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# Remove old watcher state file if it exists |
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if os.path.exists(options.WATCHER_STATEFILE): |
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logging.info("Removing watcher state file %s", options.WATCHER_STATEFILE) |
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if not options.dry_run: |
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utils.RemoveFile(options.WATCHER_STATEFILE) |
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|
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|
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def UpgradeFileStoragePaths(config_data): |
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# Write file storage paths |
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if not os.path.exists(options.FILE_STORAGE_PATHS_FILE): |
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cluster = config_data["cluster"] |
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file_storage_dir = cluster.get("file_storage_dir") |
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shared_file_storage_dir = cluster.get("shared_file_storage_dir") |
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del cluster |
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|
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logging.info("Ganeti 2.7 and later only allow whitelisted directories" |
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" for file storage; writing existing configuration values" |
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" into '%s'", |
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options.FILE_STORAGE_PATHS_FILE) |
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|
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if file_storage_dir: |
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logging.info("File storage directory: %s", file_storage_dir) |
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if shared_file_storage_dir: |
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logging.info("Shared file storage directory: %s", |
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shared_file_storage_dir) |
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|
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buf = StringIO() |
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buf.write("# List automatically generated from configuration by\n") |
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buf.write("# cfgupgrade at %s\n" % time.asctime()) |
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if file_storage_dir: |
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buf.write("%s\n" % file_storage_dir) |
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if shared_file_storage_dir: |
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buf.write("%s\n" % shared_file_storage_dir) |
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utils.WriteFile(file_name=options.FILE_STORAGE_PATHS_FILE, |
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data=buf.getvalue(), |
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mode=0600, |
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dry_run=options.dry_run, |
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backup=True) |
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|
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|
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def GetNewNodeIndex(nodes_by_old_key, old_key, new_key_field): |
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if old_key not in nodes_by_old_key: |
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logging.warning("Can't find node '%s' in configuration, assuming that it's" |
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" already up-to-date", old_key) |
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return old_key |
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return nodes_by_old_key[old_key][new_key_field] |
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|
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|
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def ChangeNodeIndices(config_data, old_key_field, new_key_field): |
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def ChangeDiskNodeIndices(disk): |
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if disk["dev_type"] in constants.LDS_DRBD: |
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for i in range(0, 2): |
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disk["logical_id"][i] = GetNewNodeIndex(nodes_by_old_key, |
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disk["logical_id"][i], |
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new_key_field) |
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if "children" in disk: |
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for child in disk["children"]: |
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ChangeDiskNodeIndices(child) |
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|
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nodes_by_old_key = {} |
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nodes_by_new_key = {} |
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for (_, node) in config_data["nodes"].items(): |
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nodes_by_old_key[node[old_key_field]] = node |
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nodes_by_new_key[node[new_key_field]] = node |
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|
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config_data["nodes"] = nodes_by_new_key |
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|
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cluster = config_data["cluster"] |
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cluster["master_node"] = GetNewNodeIndex(nodes_by_old_key, |
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cluster["master_node"], |
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new_key_field) |
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|
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for inst in config_data["instances"].values(): |
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inst["primary_node"] = GetNewNodeIndex(nodes_by_old_key, |
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inst["primary_node"], |
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new_key_field) |
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for disk in inst["disks"]: |
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ChangeDiskNodeIndices(disk) |
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|
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|
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def ChangeInstanceIndices(config_data, old_key_field, new_key_field): |
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insts_by_old_key = {} |
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insts_by_new_key = {} |
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for (_, inst) in config_data["instances"].items(): |
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insts_by_old_key[inst[old_key_field]] = inst |
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insts_by_new_key[inst[new_key_field]] = inst |
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|
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config_data["instances"] = insts_by_new_key |
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|
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|
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def UpgradeNodeIndices(config_data): |
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ChangeNodeIndices(config_data, "name", "uuid") |
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|
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|
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def UpgradeInstanceIndices(config_data): |
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ChangeInstanceIndices(config_data, "name", "uuid") |
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|
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|
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def UpgradeAll(config_data): |
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config_data["version"] = version.BuildVersion(TARGET_MAJOR, TARGET_MINOR, 0) |
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UpgradeRapiUsers() |
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UpgradeWatcher() |
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UpgradeFileStoragePaths(config_data) |
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UpgradeNetworks(config_data) |
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UpgradeCluster(config_data) |
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UpgradeGroups(config_data) |
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UpgradeInstances(config_data) |
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UpgradeNodeIndices(config_data) |
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UpgradeInstanceIndices(config_data) |
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|
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|
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def DowngradeInstances(config_data): |
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if "instances" not in config_data: |
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raise Error("Cannot find the 'instances' key in the configuration!") |
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for (iname, iobj) in config_data["instances"].items(): |
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DowngradeNicParamsVLAN(iobj["nics"], iname) |
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|
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|
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def DowngradeNicParamsVLAN(nics, owner): |
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for nic in nics: |
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vlan = nic["nicparams"].get("vlan", None) |
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if vlan: |
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logging.warning("Instance with name %s found. Removing VLAN information" |
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" %s.", owner, vlan) |
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del nic["nicparams"]["vlan"] |
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|
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|
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def DowngradeAll(config_data): |
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# Any code specific to a particular version should be labeled that way, so |
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# it can be removed when updating to the next version. |
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config_data["version"] = version.BuildVersion(DOWNGRADE_MAJOR, |
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DOWNGRADE_MINOR, 0) |
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DowngradeInstances(config_data) |
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|
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|
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def main(): |
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"""Main program. |
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|
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""" |
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global options, args # pylint: disable=W0603 |
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|
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# Option parsing |
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parser = optparse.OptionParser(usage="%prog [--debug|--verbose] [--force]") |
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parser.add_option("--dry-run", dest="dry_run", |
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action="store_true", |
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help="Try to do the conversion, but don't write" |
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" output file") |
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parser.add_option(cli.FORCE_OPT) |
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parser.add_option(cli.DEBUG_OPT) |
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parser.add_option(cli.VERBOSE_OPT) |
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parser.add_option("--ignore-hostname", dest="ignore_hostname", |
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action="store_true", default=False, |
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help="Don't abort if hostname doesn't match") |
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parser.add_option("--path", help="Convert configuration in this" |
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" directory instead of '%s'" % pathutils.DATA_DIR, |
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default=pathutils.DATA_DIR, dest="data_dir") |
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parser.add_option("--confdir", |
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help=("Use this directory instead of '%s'" % |
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pathutils.CONF_DIR), |
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default=pathutils.CONF_DIR, dest="conf_dir") |
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parser.add_option("--no-verify", |
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help="Do not verify configuration after upgrade", |
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action="store_true", dest="no_verify", default=False) |
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parser.add_option("--downgrade", |
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help="Downgrade to the previous stable version", |
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action="store_true", dest="downgrade", default=False) |
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(options, args) = parser.parse_args() |
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|
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# We need to keep filenames locally because they might be renamed between |
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# versions. |
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options.data_dir = os.path.abspath(options.data_dir) |
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options.CONFIG_DATA_PATH = options.data_dir + "/config.data" |
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options.SERVER_PEM_PATH = options.data_dir + "/server.pem" |
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options.KNOWN_HOSTS_PATH = options.data_dir + "/known_hosts" |
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options.RAPI_CERT_FILE = options.data_dir + "/rapi.pem" |
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options.SPICE_CERT_FILE = options.data_dir + "/spice.pem" |
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options.SPICE_CACERT_FILE = options.data_dir + "/spice-ca.pem" |
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options.RAPI_USERS_FILE = options.data_dir + "/rapi/users" |
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options.RAPI_USERS_FILE_PRE24 = options.data_dir + "/rapi_users" |
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options.CONFD_HMAC_KEY = options.data_dir + "/hmac.key" |
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options.CDS_FILE = options.data_dir + "/cluster-domain-secret" |
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options.SSCONF_MASTER_NODE = options.data_dir + "/ssconf_master_node" |
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options.WATCHER_STATEFILE = options.data_dir + "/watcher.data" |
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options.FILE_STORAGE_PATHS_FILE = options.conf_dir + "/file-storage-paths" |
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|
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SetupLogging() |
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|
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# Option checking |
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if args: |
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raise Error("No arguments expected") |
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if options.downgrade and not options.no_verify: |
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options.no_verify = True |
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|
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# Check master name |
447 |
if not (CheckHostname(options.SSCONF_MASTER_NODE) or options.ignore_hostname): |
448 |
logging.error("Aborting due to hostname mismatch") |
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sys.exit(constants.EXIT_FAILURE) |
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|
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if not options.force: |
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if options.downgrade: |
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usertext = ("The configuration is going to be DOWNGRADED to version %s.%s" |
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" Some configuration data might be removed if they don't fit" |
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" in the old format. Please make sure you have read the" |
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" upgrade notes (available in the UPGRADE file and included" |
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" in other documentation formats) to understand what they" |
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" are. Continue with *DOWNGRADING* the configuration?" % |
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(DOWNGRADE_MAJOR, DOWNGRADE_MINOR)) |
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else: |
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usertext = ("Please make sure you have read the upgrade notes for" |
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" Ganeti %s (available in the UPGRADE file and included" |
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" in other documentation formats). Continue with upgrading" |
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" configuration?" % constants.RELEASE_VERSION) |
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if not cli.AskUser(usertext): |
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sys.exit(constants.EXIT_FAILURE) |
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|
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# Check whether it's a Ganeti configuration directory |
469 |
if not (os.path.isfile(options.CONFIG_DATA_PATH) and |
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os.path.isfile(options.SERVER_PEM_PATH) and |
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os.path.isfile(options.KNOWN_HOSTS_PATH)): |
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raise Error(("%s does not seem to be a Ganeti configuration" |
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" directory") % options.data_dir) |
474 |
|
475 |
if not os.path.isdir(options.conf_dir): |
476 |
raise Error("Not a directory: %s" % options.conf_dir) |
477 |
|
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config_data = serializer.LoadJson(utils.ReadFile(options.CONFIG_DATA_PATH)) |
479 |
|
480 |
try: |
481 |
config_version = config_data["version"] |
482 |
except KeyError: |
483 |
raise Error("Unable to determine configuration version") |
484 |
|
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(config_major, config_minor, config_revision) = \ |
486 |
version.SplitVersion(config_version) |
487 |
|
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logging.info("Found configuration version %s (%d.%d.%d)", |
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config_version, config_major, config_minor, config_revision) |
490 |
|
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if "config_version" in config_data["cluster"]: |
492 |
raise Error("Inconsistent configuration: found config_version in" |
493 |
" configuration file") |
494 |
|
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# Downgrade to the previous stable version |
496 |
if options.downgrade: |
497 |
if not ((config_major == TARGET_MAJOR and config_minor == TARGET_MINOR) or |
498 |
(config_major == DOWNGRADE_MAJOR and |
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config_minor == DOWNGRADE_MINOR)): |
500 |
raise Error("Downgrade supported only from the latest version (%s.%s)," |
501 |
" found %s (%s.%s.%s) instead" % |
502 |
(TARGET_MAJOR, TARGET_MINOR, config_version, config_major, |
503 |
config_minor, config_revision)) |
504 |
DowngradeAll(config_data) |
505 |
|
506 |
# Upgrade from 2.{0..7} to 2.9 |
507 |
elif config_major == 2 and config_minor in range(0, 10): |
508 |
if config_revision != 0: |
509 |
logging.warning("Config revision is %s, not 0", config_revision) |
510 |
UpgradeAll(config_data) |
511 |
|
512 |
elif config_major == TARGET_MAJOR and config_minor == TARGET_MINOR: |
513 |
logging.info("No changes necessary") |
514 |
|
515 |
else: |
516 |
raise Error("Configuration version %d.%d.%d not supported by this tool" % |
517 |
(config_major, config_minor, config_revision)) |
518 |
|
519 |
try: |
520 |
logging.info("Writing configuration file to %s", options.CONFIG_DATA_PATH) |
521 |
utils.WriteFile(file_name=options.CONFIG_DATA_PATH, |
522 |
data=serializer.DumpJson(config_data), |
523 |
mode=0600, |
524 |
dry_run=options.dry_run, |
525 |
backup=True) |
526 |
|
527 |
if not options.dry_run: |
528 |
bootstrap.GenerateClusterCrypto( |
529 |
False, False, False, False, False, |
530 |
nodecert_file=options.SERVER_PEM_PATH, |
531 |
rapicert_file=options.RAPI_CERT_FILE, |
532 |
spicecert_file=options.SPICE_CERT_FILE, |
533 |
spicecacert_file=options.SPICE_CACERT_FILE, |
534 |
hmackey_file=options.CONFD_HMAC_KEY, |
535 |
cds_file=options.CDS_FILE) |
536 |
|
537 |
except Exception: |
538 |
logging.critical("Writing configuration failed. It is probably in an" |
539 |
" inconsistent state and needs manual intervention.") |
540 |
raise |
541 |
|
542 |
# test loading the config file |
543 |
all_ok = True |
544 |
if not (options.dry_run or options.no_verify): |
545 |
logging.info("Testing the new config file...") |
546 |
cfg = config.ConfigWriter(cfg_file=options.CONFIG_DATA_PATH, |
547 |
accept_foreign=options.ignore_hostname, |
548 |
offline=True) |
549 |
# if we reached this, it's all fine |
550 |
vrfy = cfg.VerifyConfig() |
551 |
if vrfy: |
552 |
logging.error("Errors after conversion:") |
553 |
for item in vrfy: |
554 |
logging.error(" - %s", item) |
555 |
all_ok = False |
556 |
else: |
557 |
logging.info("File loaded successfully after upgrading") |
558 |
del cfg |
559 |
|
560 |
if options.downgrade: |
561 |
action = "downgraded" |
562 |
out_ver = "%s.%s" % (DOWNGRADE_MAJOR, DOWNGRADE_MINOR) |
563 |
else: |
564 |
action = "upgraded" |
565 |
out_ver = constants.RELEASE_VERSION |
566 |
if all_ok: |
567 |
cli.ToStderr("Configuration successfully %s to version %s.", |
568 |
action, out_ver) |
569 |
else: |
570 |
cli.ToStderr("Configuration %s to version %s, but there are errors." |
571 |
"\nPlease review the file.", action, out_ver) |
572 |
|
573 |
|
574 |
if __name__ == "__main__": |
575 |
main() |