root / lib / config.py @ 0a1e74d9
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2 | a8083063 | Iustin Pop | #
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3 | a8083063 | Iustin Pop | |
4 | a8083063 | Iustin Pop | # Copyright (C) 2006, 2007 Google Inc.
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5 | a8083063 | Iustin Pop | #
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6 | a8083063 | Iustin Pop | # This program is free software; you can redistribute it and/or modify
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7 | a8083063 | Iustin Pop | # it under the terms of the GNU General Public License as published by
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8 | a8083063 | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
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9 | a8083063 | Iustin Pop | # (at your option) any later version.
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10 | a8083063 | Iustin Pop | #
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11 | a8083063 | Iustin Pop | # This program is distributed in the hope that it will be useful, but
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12 | a8083063 | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | a8083063 | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | a8083063 | Iustin Pop | # General Public License for more details.
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15 | a8083063 | Iustin Pop | #
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16 | a8083063 | Iustin Pop | # You should have received a copy of the GNU General Public License
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17 | a8083063 | Iustin Pop | # along with this program; if not, write to the Free Software
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18 | a8083063 | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | a8083063 | Iustin Pop | # 02110-1301, USA.
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20 | a8083063 | Iustin Pop | |
21 | a8083063 | Iustin Pop | |
22 | a8083063 | Iustin Pop | """Configuration management for Ganeti
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23 | a8083063 | Iustin Pop |
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24 | 319856a9 | Michael Hanselmann | This module provides the interface to the Ganeti cluster configuration.
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25 | a8083063 | Iustin Pop |
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26 | 319856a9 | Michael Hanselmann | The configuration data is stored on every node but is updated on the master
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27 | 319856a9 | Michael Hanselmann | only. After each update, the master distributes the data to the other nodes.
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28 | a8083063 | Iustin Pop |
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29 | 319856a9 | Michael Hanselmann | Currently, the data storage format is JSON. YAML was slow and consuming too
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30 | 319856a9 | Michael Hanselmann | much memory.
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31 | a8083063 | Iustin Pop |
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32 | a8083063 | Iustin Pop | """
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33 | a8083063 | Iustin Pop | |
34 | a8083063 | Iustin Pop | import os |
35 | a8083063 | Iustin Pop | import tempfile |
36 | a8083063 | Iustin Pop | import random |
37 | a8083063 | Iustin Pop | |
38 | a8083063 | Iustin Pop | from ganeti import errors |
39 | f78ede4e | Guido Trotter | from ganeti import locking |
40 | a8083063 | Iustin Pop | from ganeti import logger |
41 | a8083063 | Iustin Pop | from ganeti import utils |
42 | a8083063 | Iustin Pop | from ganeti import constants |
43 | a8083063 | Iustin Pop | from ganeti import rpc |
44 | a8083063 | Iustin Pop | from ganeti import objects |
45 | 8d14b30d | Iustin Pop | from ganeti import serializer |
46 | 243cdbcc | Michael Hanselmann | from ganeti import ssconf |
47 | 243cdbcc | Michael Hanselmann | |
48 | 243cdbcc | Michael Hanselmann | |
49 | f78ede4e | Guido Trotter | _config_lock = locking.SharedLock() |
50 | f78ede4e | Guido Trotter | |
51 | f78ede4e | Guido Trotter | |
52 | 243cdbcc | Michael Hanselmann | def ValidateConfig(): |
53 | 243cdbcc | Michael Hanselmann | sstore = ssconf.SimpleStore() |
54 | 243cdbcc | Michael Hanselmann | |
55 | 243cdbcc | Michael Hanselmann | if sstore.GetConfigVersion() != constants.CONFIG_VERSION:
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56 | 243cdbcc | Michael Hanselmann | raise errors.ConfigurationError("Cluster configuration version" |
57 | 243cdbcc | Michael Hanselmann | " mismatch, got %s instead of %s" %
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58 | 243cdbcc | Michael Hanselmann | (sstore.GetConfigVersion(), |
59 | 243cdbcc | Michael Hanselmann | constants.CONFIG_VERSION)) |
60 | a8083063 | Iustin Pop | |
61 | 319856a9 | Michael Hanselmann | |
62 | a8083063 | Iustin Pop | class ConfigWriter: |
63 | 098c0958 | Michael Hanselmann | """The interface to the cluster configuration.
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64 | a8083063 | Iustin Pop |
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65 | 098c0958 | Michael Hanselmann | """
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66 | a8083063 | Iustin Pop | def __init__(self, cfg_file=None, offline=False): |
67 | 14e15659 | Iustin Pop | self.write_count = 0 |
68 | f78ede4e | Guido Trotter | self._lock = _config_lock
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69 | a8083063 | Iustin Pop | self._config_data = None |
70 | a8083063 | Iustin Pop | self._config_time = None |
71 | 264bb3c5 | Michael Hanselmann | self._config_size = None |
72 | 264bb3c5 | Michael Hanselmann | self._config_inode = None |
73 | a8083063 | Iustin Pop | self._offline = offline
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74 | a8083063 | Iustin Pop | if cfg_file is None: |
75 | a8083063 | Iustin Pop | self._cfg_file = constants.CLUSTER_CONF_FILE
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76 | a8083063 | Iustin Pop | else:
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77 | a8083063 | Iustin Pop | self._cfg_file = cfg_file
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78 | 923b1523 | Iustin Pop | self._temporary_ids = set() |
79 | 89e1fc26 | Iustin Pop | # Note: in order to prevent errors when resolving our name in
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80 | 89e1fc26 | Iustin Pop | # _DistributeConfig, we compute it here once and reuse it; it's
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81 | 89e1fc26 | Iustin Pop | # better to raise an error before starting to modify the config
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82 | 89e1fc26 | Iustin Pop | # file than after it was modified
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83 | 89e1fc26 | Iustin Pop | self._my_hostname = utils.HostInfo().name
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84 | a8083063 | Iustin Pop | |
85 | a8083063 | Iustin Pop | # this method needs to be static, so that we can call it on the class
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86 | a8083063 | Iustin Pop | @staticmethod
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87 | a8083063 | Iustin Pop | def IsCluster(): |
88 | a8083063 | Iustin Pop | """Check if the cluster is configured.
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89 | a8083063 | Iustin Pop |
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90 | a8083063 | Iustin Pop | """
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91 | a8083063 | Iustin Pop | return os.path.exists(constants.CLUSTER_CONF_FILE)
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92 | a8083063 | Iustin Pop | |
93 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
94 | a8083063 | Iustin Pop | def GenerateMAC(self): |
95 | a8083063 | Iustin Pop | """Generate a MAC for an instance.
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96 | a8083063 | Iustin Pop |
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97 | a8083063 | Iustin Pop | This should check the current instances for duplicates.
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98 | a8083063 | Iustin Pop |
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99 | a8083063 | Iustin Pop | """
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100 | a8083063 | Iustin Pop | self._OpenConfig()
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101 | a8083063 | Iustin Pop | prefix = self._config_data.cluster.mac_prefix
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102 | a8083063 | Iustin Pop | all_macs = self._AllMACs()
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103 | a8083063 | Iustin Pop | retries = 64
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104 | a8083063 | Iustin Pop | while retries > 0: |
105 | a8083063 | Iustin Pop | byte1 = random.randrange(0, 256) |
106 | a8083063 | Iustin Pop | byte2 = random.randrange(0, 256) |
107 | a8083063 | Iustin Pop | byte3 = random.randrange(0, 256) |
108 | a8083063 | Iustin Pop | mac = "%s:%02x:%02x:%02x" % (prefix, byte1, byte2, byte3)
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109 | a8083063 | Iustin Pop | if mac not in all_macs: |
110 | a8083063 | Iustin Pop | break
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111 | a8083063 | Iustin Pop | retries -= 1
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112 | a8083063 | Iustin Pop | else:
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113 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Can't generate unique MAC") |
114 | a8083063 | Iustin Pop | return mac
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115 | a8083063 | Iustin Pop | |
116 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
117 | 1862d460 | Alexander Schreiber | def IsMacInUse(self, mac): |
118 | 1862d460 | Alexander Schreiber | """Predicate: check if the specified MAC is in use in the Ganeti cluster.
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119 | 1862d460 | Alexander Schreiber |
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120 | 1862d460 | Alexander Schreiber | This only checks instances managed by this cluster, it does not
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121 | 1862d460 | Alexander Schreiber | check for potential collisions elsewhere.
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122 | 1862d460 | Alexander Schreiber |
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123 | 1862d460 | Alexander Schreiber | """
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124 | 1862d460 | Alexander Schreiber | self._OpenConfig()
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125 | 1862d460 | Alexander Schreiber | all_macs = self._AllMACs()
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126 | 1862d460 | Alexander Schreiber | return mac in all_macs |
127 | 1862d460 | Alexander Schreiber | |
128 | 923b1523 | Iustin Pop | def _ComputeAllLVs(self): |
129 | 923b1523 | Iustin Pop | """Compute the list of all LVs.
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130 | 923b1523 | Iustin Pop |
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131 | 923b1523 | Iustin Pop | """
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132 | 923b1523 | Iustin Pop | self._OpenConfig()
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133 | 923b1523 | Iustin Pop | lvnames = set()
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134 | 923b1523 | Iustin Pop | for instance in self._config_data.instances.values(): |
135 | 923b1523 | Iustin Pop | node_data = instance.MapLVsByNode() |
136 | 923b1523 | Iustin Pop | for lv_list in node_data.values(): |
137 | 923b1523 | Iustin Pop | lvnames.update(lv_list) |
138 | 923b1523 | Iustin Pop | return lvnames
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139 | 923b1523 | Iustin Pop | |
140 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
141 | 923b1523 | Iustin Pop | def GenerateUniqueID(self, exceptions=None): |
142 | 923b1523 | Iustin Pop | """Generate an unique disk name.
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143 | 923b1523 | Iustin Pop |
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144 | 923b1523 | Iustin Pop | This checks the current node, instances and disk names for
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145 | 923b1523 | Iustin Pop | duplicates.
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146 | 923b1523 | Iustin Pop |
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147 | 923b1523 | Iustin Pop | Args:
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148 | 923b1523 | Iustin Pop | - exceptions: a list with some other names which should be checked
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149 | 923b1523 | Iustin Pop | for uniqueness (used for example when you want to get
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150 | 923b1523 | Iustin Pop | more than one id at one time without adding each one in
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151 | 923b1523 | Iustin Pop | turn to the config file
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152 | 923b1523 | Iustin Pop |
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153 | 923b1523 | Iustin Pop | Returns: the unique id as a string
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154 | 923b1523 | Iustin Pop |
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155 | 923b1523 | Iustin Pop | """
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156 | 923b1523 | Iustin Pop | existing = set()
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157 | 923b1523 | Iustin Pop | existing.update(self._temporary_ids)
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158 | 923b1523 | Iustin Pop | existing.update(self._ComputeAllLVs())
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159 | 923b1523 | Iustin Pop | existing.update(self._config_data.instances.keys())
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160 | 923b1523 | Iustin Pop | existing.update(self._config_data.nodes.keys())
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161 | 923b1523 | Iustin Pop | if exceptions is not None: |
162 | 923b1523 | Iustin Pop | existing.update(exceptions) |
163 | 923b1523 | Iustin Pop | retries = 64
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164 | 923b1523 | Iustin Pop | while retries > 0: |
165 | 24818e8f | Michael Hanselmann | unique_id = utils.NewUUID() |
166 | 923b1523 | Iustin Pop | if unique_id not in existing and unique_id is not None: |
167 | 923b1523 | Iustin Pop | break
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168 | 923b1523 | Iustin Pop | else:
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169 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Not able generate an unique ID" |
170 | 3ecf6786 | Iustin Pop | " (last tried ID: %s" % unique_id)
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171 | 923b1523 | Iustin Pop | self._temporary_ids.add(unique_id)
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172 | 923b1523 | Iustin Pop | return unique_id
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173 | 923b1523 | Iustin Pop | |
174 | a8083063 | Iustin Pop | def _AllMACs(self): |
175 | a8083063 | Iustin Pop | """Return all MACs present in the config.
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176 | a8083063 | Iustin Pop |
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177 | a8083063 | Iustin Pop | """
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178 | a8083063 | Iustin Pop | self._OpenConfig()
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179 | a8083063 | Iustin Pop | |
180 | a8083063 | Iustin Pop | result = [] |
181 | a8083063 | Iustin Pop | for instance in self._config_data.instances.values(): |
182 | a8083063 | Iustin Pop | for nic in instance.nics: |
183 | a8083063 | Iustin Pop | result.append(nic.mac) |
184 | a8083063 | Iustin Pop | |
185 | a8083063 | Iustin Pop | return result
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186 | a8083063 | Iustin Pop | |
187 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
188 | a8083063 | Iustin Pop | def VerifyConfig(self): |
189 | a8083063 | Iustin Pop | """Stub verify function.
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190 | a8083063 | Iustin Pop | """
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191 | a8083063 | Iustin Pop | self._OpenConfig()
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192 | a8083063 | Iustin Pop | |
193 | a8083063 | Iustin Pop | result = [] |
194 | a8083063 | Iustin Pop | seen_macs = [] |
195 | a8083063 | Iustin Pop | data = self._config_data
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196 | a8083063 | Iustin Pop | for instance_name in data.instances: |
197 | a8083063 | Iustin Pop | instance = data.instances[instance_name] |
198 | a8083063 | Iustin Pop | if instance.primary_node not in data.nodes: |
199 | 8522ceeb | Iustin Pop | result.append("instance '%s' has invalid primary node '%s'" %
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200 | a8083063 | Iustin Pop | (instance_name, instance.primary_node)) |
201 | a8083063 | Iustin Pop | for snode in instance.secondary_nodes: |
202 | a8083063 | Iustin Pop | if snode not in data.nodes: |
203 | 8522ceeb | Iustin Pop | result.append("instance '%s' has invalid secondary node '%s'" %
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204 | a8083063 | Iustin Pop | (instance_name, snode)) |
205 | a8083063 | Iustin Pop | for idx, nic in enumerate(instance.nics): |
206 | a8083063 | Iustin Pop | if nic.mac in seen_macs: |
207 | 8522ceeb | Iustin Pop | result.append("instance '%s' has NIC %d mac %s duplicate" %
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208 | a8083063 | Iustin Pop | (instance_name, idx, nic.mac)) |
209 | a8083063 | Iustin Pop | else:
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210 | a8083063 | Iustin Pop | seen_macs.append(nic.mac) |
211 | a8083063 | Iustin Pop | return result
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212 | a8083063 | Iustin Pop | |
213 | f78ede4e | Guido Trotter | def _UnlockedSetDiskID(self, disk, node_name): |
214 | a8083063 | Iustin Pop | """Convert the unique ID to the ID needed on the target nodes.
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215 | a8083063 | Iustin Pop |
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216 | a8083063 | Iustin Pop | This is used only for drbd, which needs ip/port configuration.
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217 | a8083063 | Iustin Pop |
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218 | a8083063 | Iustin Pop | The routine descends down and updates its children also, because
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219 | a8083063 | Iustin Pop | this helps when the only the top device is passed to the remote
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220 | a8083063 | Iustin Pop | node.
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221 | a8083063 | Iustin Pop |
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222 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
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223 | f78ede4e | Guido Trotter |
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224 | a8083063 | Iustin Pop | """
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225 | a8083063 | Iustin Pop | if disk.children:
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226 | a8083063 | Iustin Pop | for child in disk.children: |
227 | f78ede4e | Guido Trotter | self._UnlockedSetDiskID(child, node_name)
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228 | a8083063 | Iustin Pop | |
229 | a8083063 | Iustin Pop | if disk.logical_id is None and disk.physical_id is not None: |
230 | a8083063 | Iustin Pop | return
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231 | a1f445d3 | Iustin Pop | if disk.dev_type in constants.LDS_DRBD: |
232 | a8083063 | Iustin Pop | pnode, snode, port = disk.logical_id |
233 | a8083063 | Iustin Pop | if node_name not in (pnode, snode): |
234 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("DRBD device not knowing node %s" % |
235 | 3ecf6786 | Iustin Pop | node_name) |
236 | f78ede4e | Guido Trotter | pnode_info = self._UnlockedGetNodeInfo(pnode)
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237 | f78ede4e | Guido Trotter | snode_info = self._UnlockedGetNodeInfo(snode)
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238 | a8083063 | Iustin Pop | if pnode_info is None or snode_info is None: |
239 | a8083063 | Iustin Pop | raise errors.ConfigurationError("Can't find primary or secondary node" |
240 | a8083063 | Iustin Pop | " for %s" % str(disk)) |
241 | a8083063 | Iustin Pop | if pnode == node_name:
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242 | a8083063 | Iustin Pop | disk.physical_id = (pnode_info.secondary_ip, port, |
243 | a8083063 | Iustin Pop | snode_info.secondary_ip, port) |
244 | a8083063 | Iustin Pop | else: # it must be secondary, we tested above |
245 | a8083063 | Iustin Pop | disk.physical_id = (snode_info.secondary_ip, port, |
246 | a8083063 | Iustin Pop | pnode_info.secondary_ip, port) |
247 | a8083063 | Iustin Pop | else:
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248 | a8083063 | Iustin Pop | disk.physical_id = disk.logical_id |
249 | a8083063 | Iustin Pop | return
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250 | a8083063 | Iustin Pop | |
251 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
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252 | f78ede4e | Guido Trotter | def SetDiskID(self, disk, node_name): |
253 | f78ede4e | Guido Trotter | """Convert the unique ID to the ID needed on the target nodes.
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254 | f78ede4e | Guido Trotter |
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255 | f78ede4e | Guido Trotter | This is used only for drbd, which needs ip/port configuration.
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256 | f78ede4e | Guido Trotter |
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257 | f78ede4e | Guido Trotter | The routine descends down and updates its children also, because
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258 | f78ede4e | Guido Trotter | this helps when the only the top device is passed to the remote
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259 | f78ede4e | Guido Trotter | node.
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260 | f78ede4e | Guido Trotter |
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261 | f78ede4e | Guido Trotter | """
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262 | f78ede4e | Guido Trotter | return self._UnlockedSetDiskID(disk, node_name) |
263 | f78ede4e | Guido Trotter | |
264 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
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265 | b2fddf63 | Iustin Pop | def AddTcpUdpPort(self, port): |
266 | b2fddf63 | Iustin Pop | """Adds a new port to the available port pool.
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267 | b2fddf63 | Iustin Pop |
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268 | b2fddf63 | Iustin Pop | """
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269 | 264bb3c5 | Michael Hanselmann | if not isinstance(port, int): |
270 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Invalid type passed for port") |
271 | 264bb3c5 | Michael Hanselmann | |
272 | 264bb3c5 | Michael Hanselmann | self._OpenConfig()
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273 | b2fddf63 | Iustin Pop | self._config_data.cluster.tcpudp_port_pool.add(port)
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274 | 264bb3c5 | Michael Hanselmann | self._WriteConfig()
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275 | 264bb3c5 | Michael Hanselmann | |
276 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
277 | b2fddf63 | Iustin Pop | def GetPortList(self): |
278 | 264bb3c5 | Michael Hanselmann | """Returns a copy of the current port list.
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279 | 264bb3c5 | Michael Hanselmann |
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280 | 264bb3c5 | Michael Hanselmann | """
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281 | 264bb3c5 | Michael Hanselmann | self._OpenConfig()
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282 | b2fddf63 | Iustin Pop | return self._config_data.cluster.tcpudp_port_pool.copy() |
283 | 264bb3c5 | Michael Hanselmann | |
284 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
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285 | a8083063 | Iustin Pop | def AllocatePort(self): |
286 | a8083063 | Iustin Pop | """Allocate a port.
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287 | a8083063 | Iustin Pop |
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288 | b2fddf63 | Iustin Pop | The port will be taken from the available port pool or from the
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289 | b2fddf63 | Iustin Pop | default port range (and in this case we increase
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290 | b2fddf63 | Iustin Pop | highest_used_port).
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291 | a8083063 | Iustin Pop |
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292 | a8083063 | Iustin Pop | """
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293 | a8083063 | Iustin Pop | self._OpenConfig()
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294 | a8083063 | Iustin Pop | |
295 | 264bb3c5 | Michael Hanselmann | # If there are TCP/IP ports configured, we use them first.
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296 | b2fddf63 | Iustin Pop | if self._config_data.cluster.tcpudp_port_pool: |
297 | b2fddf63 | Iustin Pop | port = self._config_data.cluster.tcpudp_port_pool.pop()
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298 | 264bb3c5 | Michael Hanselmann | else:
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299 | 264bb3c5 | Michael Hanselmann | port = self._config_data.cluster.highest_used_port + 1 |
300 | 264bb3c5 | Michael Hanselmann | if port >= constants.LAST_DRBD_PORT:
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301 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("The highest used port is greater" |
302 | 3ecf6786 | Iustin Pop | " than %s. Aborting." %
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303 | 3ecf6786 | Iustin Pop | constants.LAST_DRBD_PORT) |
304 | 264bb3c5 | Michael Hanselmann | self._config_data.cluster.highest_used_port = port
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305 | a8083063 | Iustin Pop | |
306 | a8083063 | Iustin Pop | self._WriteConfig()
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307 | a8083063 | Iustin Pop | return port
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308 | a8083063 | Iustin Pop | |
309 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
310 | a8083063 | Iustin Pop | def GetHostKey(self): |
311 | a8083063 | Iustin Pop | """Return the rsa hostkey from the config.
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312 | a8083063 | Iustin Pop |
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313 | a8083063 | Iustin Pop | Args: None
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314 | a8083063 | Iustin Pop |
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315 | a8083063 | Iustin Pop | Returns: rsa hostkey
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316 | a8083063 | Iustin Pop | """
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317 | a8083063 | Iustin Pop | self._OpenConfig()
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318 | a8083063 | Iustin Pop | return self._config_data.cluster.rsahostkeypub |
319 | a8083063 | Iustin Pop | |
320 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
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321 | a8083063 | Iustin Pop | def AddInstance(self, instance): |
322 | a8083063 | Iustin Pop | """Add an instance to the config.
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323 | a8083063 | Iustin Pop |
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324 | a8083063 | Iustin Pop | This should be used after creating a new instance.
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325 | a8083063 | Iustin Pop |
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326 | a8083063 | Iustin Pop | Args:
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327 | a8083063 | Iustin Pop | instance: the instance object
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328 | a8083063 | Iustin Pop | """
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329 | a8083063 | Iustin Pop | if not isinstance(instance, objects.Instance): |
330 | a8083063 | Iustin Pop | raise errors.ProgrammerError("Invalid type passed to AddInstance") |
331 | a8083063 | Iustin Pop | |
332 | e00fb268 | Iustin Pop | if instance.disk_template != constants.DT_DISKLESS:
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333 | e00fb268 | Iustin Pop | all_lvs = instance.MapLVsByNode() |
334 | e00fb268 | Iustin Pop | logger.Info("Instance '%s' DISK_LAYOUT: %s" % (instance.name, all_lvs))
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335 | 923b1523 | Iustin Pop | |
336 | a8083063 | Iustin Pop | self._OpenConfig()
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337 | a8083063 | Iustin Pop | self._config_data.instances[instance.name] = instance
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338 | a8083063 | Iustin Pop | self._WriteConfig()
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339 | a8083063 | Iustin Pop | |
340 | 6a408fb2 | Iustin Pop | def _SetInstanceStatus(self, instance_name, status): |
341 | 6a408fb2 | Iustin Pop | """Set the instance's status to a given value.
|
342 | a8083063 | Iustin Pop |
|
343 | a8083063 | Iustin Pop | """
|
344 | 6a408fb2 | Iustin Pop | if status not in ("up", "down"): |
345 | 6a408fb2 | Iustin Pop | raise errors.ProgrammerError("Invalid status '%s' passed to" |
346 | 6a408fb2 | Iustin Pop | " ConfigWriter._SetInstanceStatus()" %
|
347 | 6a408fb2 | Iustin Pop | status) |
348 | a8083063 | Iustin Pop | self._OpenConfig()
|
349 | a8083063 | Iustin Pop | |
350 | a8083063 | Iustin Pop | if instance_name not in self._config_data.instances: |
351 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % |
352 | 3ecf6786 | Iustin Pop | instance_name) |
353 | a8083063 | Iustin Pop | instance = self._config_data.instances[instance_name]
|
354 | 455a3445 | Iustin Pop | if instance.status != status:
|
355 | 455a3445 | Iustin Pop | instance.status = status |
356 | 455a3445 | Iustin Pop | self._WriteConfig()
|
357 | a8083063 | Iustin Pop | |
358 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
359 | 6a408fb2 | Iustin Pop | def MarkInstanceUp(self, instance_name): |
360 | 6a408fb2 | Iustin Pop | """Mark the instance status to up in the config.
|
361 | 6a408fb2 | Iustin Pop |
|
362 | 6a408fb2 | Iustin Pop | """
|
363 | 6a408fb2 | Iustin Pop | self._SetInstanceStatus(instance_name, "up") |
364 | 6a408fb2 | Iustin Pop | |
365 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
366 | a8083063 | Iustin Pop | def RemoveInstance(self, instance_name): |
367 | a8083063 | Iustin Pop | """Remove the instance from the configuration.
|
368 | a8083063 | Iustin Pop |
|
369 | a8083063 | Iustin Pop | """
|
370 | a8083063 | Iustin Pop | self._OpenConfig()
|
371 | a8083063 | Iustin Pop | |
372 | a8083063 | Iustin Pop | if instance_name not in self._config_data.instances: |
373 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % instance_name) |
374 | a8083063 | Iustin Pop | del self._config_data.instances[instance_name] |
375 | a8083063 | Iustin Pop | self._WriteConfig()
|
376 | a8083063 | Iustin Pop | |
377 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
378 | fc95f88f | Iustin Pop | def RenameInstance(self, old_name, new_name): |
379 | fc95f88f | Iustin Pop | """Rename an instance.
|
380 | fc95f88f | Iustin Pop |
|
381 | fc95f88f | Iustin Pop | This needs to be done in ConfigWriter and not by RemoveInstance
|
382 | fc95f88f | Iustin Pop | combined with AddInstance as only we can guarantee an atomic
|
383 | fc95f88f | Iustin Pop | rename.
|
384 | fc95f88f | Iustin Pop |
|
385 | fc95f88f | Iustin Pop | """
|
386 | fc95f88f | Iustin Pop | self._OpenConfig()
|
387 | fc95f88f | Iustin Pop | if old_name not in self._config_data.instances: |
388 | fc95f88f | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % old_name) |
389 | fc95f88f | Iustin Pop | inst = self._config_data.instances[old_name]
|
390 | fc95f88f | Iustin Pop | del self._config_data.instances[old_name] |
391 | fc95f88f | Iustin Pop | inst.name = new_name |
392 | b23c4333 | Manuel Franceschini | |
393 | b23c4333 | Manuel Franceschini | for disk in inst.disks: |
394 | b23c4333 | Manuel Franceschini | if disk.dev_type == constants.LD_FILE:
|
395 | b23c4333 | Manuel Franceschini | # rename the file paths in logical and physical id
|
396 | b23c4333 | Manuel Franceschini | file_storage_dir = os.path.dirname(os.path.dirname(disk.logical_id[1]))
|
397 | b23c4333 | Manuel Franceschini | disk.physical_id = disk.logical_id = (disk.logical_id[0],
|
398 | b23c4333 | Manuel Franceschini | os.path.join(file_storage_dir, |
399 | b23c4333 | Manuel Franceschini | inst.name, |
400 | b23c4333 | Manuel Franceschini | disk.iv_name)) |
401 | b23c4333 | Manuel Franceschini | |
402 | fc95f88f | Iustin Pop | self._config_data.instances[inst.name] = inst
|
403 | fc95f88f | Iustin Pop | self._WriteConfig()
|
404 | fc95f88f | Iustin Pop | |
405 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
406 | a8083063 | Iustin Pop | def MarkInstanceDown(self, instance_name): |
407 | a8083063 | Iustin Pop | """Mark the status of an instance to down in the configuration.
|
408 | a8083063 | Iustin Pop |
|
409 | a8083063 | Iustin Pop | """
|
410 | 6a408fb2 | Iustin Pop | self._SetInstanceStatus(instance_name, "down") |
411 | a8083063 | Iustin Pop | |
412 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
413 | a8083063 | Iustin Pop | def GetInstanceList(self): |
414 | a8083063 | Iustin Pop | """Get the list of instances.
|
415 | a8083063 | Iustin Pop |
|
416 | a8083063 | Iustin Pop | Returns:
|
417 | a8083063 | Iustin Pop | array of instances, ex. ['instance2.example.com','instance1.example.com']
|
418 | a8083063 | Iustin Pop | these contains all the instances, also the ones in Admin_down state
|
419 | a8083063 | Iustin Pop |
|
420 | a8083063 | Iustin Pop | """
|
421 | a8083063 | Iustin Pop | self._OpenConfig()
|
422 | a8083063 | Iustin Pop | |
423 | a8083063 | Iustin Pop | return self._config_data.instances.keys() |
424 | a8083063 | Iustin Pop | |
425 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
426 | a8083063 | Iustin Pop | def ExpandInstanceName(self, short_name): |
427 | a8083063 | Iustin Pop | """Attempt to expand an incomplete instance name.
|
428 | a8083063 | Iustin Pop |
|
429 | a8083063 | Iustin Pop | """
|
430 | a8083063 | Iustin Pop | self._OpenConfig()
|
431 | a8083063 | Iustin Pop | |
432 | a8083063 | Iustin Pop | return utils.MatchNameComponent(short_name,
|
433 | a8083063 | Iustin Pop | self._config_data.instances.keys())
|
434 | a8083063 | Iustin Pop | |
435 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
436 | a8083063 | Iustin Pop | def GetInstanceInfo(self, instance_name): |
437 | a8083063 | Iustin Pop | """Returns informations about an instance.
|
438 | a8083063 | Iustin Pop |
|
439 | a8083063 | Iustin Pop | It takes the information from the configuration file. Other informations of
|
440 | a8083063 | Iustin Pop | an instance are taken from the live systems.
|
441 | a8083063 | Iustin Pop |
|
442 | a8083063 | Iustin Pop | Args:
|
443 | a8083063 | Iustin Pop | instance: name of the instance, ex instance1.example.com
|
444 | a8083063 | Iustin Pop |
|
445 | a8083063 | Iustin Pop | Returns:
|
446 | a8083063 | Iustin Pop | the instance object
|
447 | a8083063 | Iustin Pop |
|
448 | a8083063 | Iustin Pop | """
|
449 | a8083063 | Iustin Pop | self._OpenConfig()
|
450 | a8083063 | Iustin Pop | |
451 | a8083063 | Iustin Pop | if instance_name not in self._config_data.instances: |
452 | a8083063 | Iustin Pop | return None |
453 | a8083063 | Iustin Pop | |
454 | a8083063 | Iustin Pop | return self._config_data.instances[instance_name] |
455 | a8083063 | Iustin Pop | |
456 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
457 | a8083063 | Iustin Pop | def AddNode(self, node): |
458 | a8083063 | Iustin Pop | """Add a node to the configuration.
|
459 | a8083063 | Iustin Pop |
|
460 | a8083063 | Iustin Pop | Args:
|
461 | a8083063 | Iustin Pop | node: an object.Node instance
|
462 | a8083063 | Iustin Pop |
|
463 | a8083063 | Iustin Pop | """
|
464 | a8083063 | Iustin Pop | self._OpenConfig()
|
465 | a8083063 | Iustin Pop | self._config_data.nodes[node.name] = node
|
466 | a8083063 | Iustin Pop | self._WriteConfig()
|
467 | a8083063 | Iustin Pop | |
468 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
469 | a8083063 | Iustin Pop | def RemoveNode(self, node_name): |
470 | a8083063 | Iustin Pop | """Remove a node from the configuration.
|
471 | a8083063 | Iustin Pop |
|
472 | a8083063 | Iustin Pop | """
|
473 | a8083063 | Iustin Pop | self._OpenConfig()
|
474 | a8083063 | Iustin Pop | if node_name not in self._config_data.nodes: |
475 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown node '%s'" % node_name) |
476 | a8083063 | Iustin Pop | |
477 | a8083063 | Iustin Pop | del self._config_data.nodes[node_name] |
478 | a8083063 | Iustin Pop | self._WriteConfig()
|
479 | a8083063 | Iustin Pop | |
480 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
481 | a8083063 | Iustin Pop | def ExpandNodeName(self, short_name): |
482 | a8083063 | Iustin Pop | """Attempt to expand an incomplete instance name.
|
483 | a8083063 | Iustin Pop |
|
484 | a8083063 | Iustin Pop | """
|
485 | a8083063 | Iustin Pop | self._OpenConfig()
|
486 | a8083063 | Iustin Pop | |
487 | a8083063 | Iustin Pop | return utils.MatchNameComponent(short_name,
|
488 | a8083063 | Iustin Pop | self._config_data.nodes.keys())
|
489 | a8083063 | Iustin Pop | |
490 | f78ede4e | Guido Trotter | def _UnlockedGetNodeInfo(self, node_name): |
491 | a8083063 | Iustin Pop | """Get the configuration of a node, as stored in the config.
|
492 | a8083063 | Iustin Pop |
|
493 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
|
494 | f78ede4e | Guido Trotter |
|
495 | a8083063 | Iustin Pop | Args: node: nodename (tuple) of the node
|
496 | a8083063 | Iustin Pop |
|
497 | a8083063 | Iustin Pop | Returns: the node object
|
498 | a8083063 | Iustin Pop |
|
499 | a8083063 | Iustin Pop | """
|
500 | a8083063 | Iustin Pop | self._OpenConfig()
|
501 | a8083063 | Iustin Pop | |
502 | a8083063 | Iustin Pop | if node_name not in self._config_data.nodes: |
503 | a8083063 | Iustin Pop | return None |
504 | a8083063 | Iustin Pop | |
505 | a8083063 | Iustin Pop | return self._config_data.nodes[node_name] |
506 | a8083063 | Iustin Pop | |
507 | f78ede4e | Guido Trotter | |
508 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
509 | f78ede4e | Guido Trotter | def GetNodeInfo(self, node_name): |
510 | f78ede4e | Guido Trotter | """Get the configuration of a node, as stored in the config.
|
511 | f78ede4e | Guido Trotter |
|
512 | f78ede4e | Guido Trotter | Args: node: nodename (tuple) of the node
|
513 | f78ede4e | Guido Trotter |
|
514 | f78ede4e | Guido Trotter | Returns: the node object
|
515 | f78ede4e | Guido Trotter |
|
516 | f78ede4e | Guido Trotter | """
|
517 | f78ede4e | Guido Trotter | return self._UnlockedGetNodeInfo(node_name) |
518 | f78ede4e | Guido Trotter | |
519 | f78ede4e | Guido Trotter | def _UnlockedGetNodeList(self): |
520 | a8083063 | Iustin Pop | """Return the list of nodes which are in the configuration.
|
521 | a8083063 | Iustin Pop |
|
522 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
|
523 | f78ede4e | Guido Trotter |
|
524 | a8083063 | Iustin Pop | """
|
525 | a8083063 | Iustin Pop | self._OpenConfig()
|
526 | a8083063 | Iustin Pop | return self._config_data.nodes.keys() |
527 | a8083063 | Iustin Pop | |
528 | f78ede4e | Guido Trotter | |
529 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
530 | f78ede4e | Guido Trotter | def GetNodeList(self): |
531 | f78ede4e | Guido Trotter | """Return the list of nodes which are in the configuration.
|
532 | f78ede4e | Guido Trotter |
|
533 | f78ede4e | Guido Trotter | """
|
534 | f78ede4e | Guido Trotter | return self._UnlockedGetNodeList() |
535 | f78ede4e | Guido Trotter | |
536 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
537 | a8083063 | Iustin Pop | def DumpConfig(self): |
538 | a8083063 | Iustin Pop | """Return the entire configuration of the cluster.
|
539 | a8083063 | Iustin Pop | """
|
540 | a8083063 | Iustin Pop | self._OpenConfig()
|
541 | a8083063 | Iustin Pop | return self._config_data |
542 | a8083063 | Iustin Pop | |
543 | a8083063 | Iustin Pop | def _BumpSerialNo(self): |
544 | a8083063 | Iustin Pop | """Bump up the serial number of the config.
|
545 | a8083063 | Iustin Pop |
|
546 | a8083063 | Iustin Pop | """
|
547 | a8083063 | Iustin Pop | self._config_data.cluster.serial_no += 1 |
548 | a8083063 | Iustin Pop | |
549 | a8083063 | Iustin Pop | def _OpenConfig(self): |
550 | a8083063 | Iustin Pop | """Read the config data from disk.
|
551 | a8083063 | Iustin Pop |
|
552 | a8083063 | Iustin Pop | In case we already have configuration data and the config file has
|
553 | a8083063 | Iustin Pop | the same mtime as when we read it, we skip the parsing of the
|
554 | a8083063 | Iustin Pop | file, since de-serialisation could be slow.
|
555 | a8083063 | Iustin Pop |
|
556 | a8083063 | Iustin Pop | """
|
557 | a8083063 | Iustin Pop | try:
|
558 | a8083063 | Iustin Pop | st = os.stat(self._cfg_file)
|
559 | a8083063 | Iustin Pop | except OSError, err: |
560 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Can't stat config file: %s" % err) |
561 | a8083063 | Iustin Pop | if (self._config_data is not None and |
562 | a8083063 | Iustin Pop | self._config_time is not None and |
563 | 264bb3c5 | Michael Hanselmann | self._config_time == st.st_mtime and |
564 | 264bb3c5 | Michael Hanselmann | self._config_size == st.st_size and |
565 | 264bb3c5 | Michael Hanselmann | self._config_inode == st.st_ino):
|
566 | a8083063 | Iustin Pop | # data is current, so skip loading of config file
|
567 | a8083063 | Iustin Pop | return
|
568 | 243cdbcc | Michael Hanselmann | |
569 | 243cdbcc | Michael Hanselmann | # Make sure the configuration has the right version
|
570 | 243cdbcc | Michael Hanselmann | ValidateConfig() |
571 | 243cdbcc | Michael Hanselmann | |
572 | a8083063 | Iustin Pop | f = open(self._cfg_file, 'r') |
573 | a8083063 | Iustin Pop | try:
|
574 | a8083063 | Iustin Pop | try:
|
575 | 8d14b30d | Iustin Pop | data = objects.ConfigData.FromDict(serializer.Load(f.read())) |
576 | a8083063 | Iustin Pop | except Exception, err: |
577 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError(err)
|
578 | a8083063 | Iustin Pop | finally:
|
579 | a8083063 | Iustin Pop | f.close() |
580 | a8083063 | Iustin Pop | if (not hasattr(data, 'cluster') or |
581 | 243cdbcc | Michael Hanselmann | not hasattr(data.cluster, 'rsahostkeypub')): |
582 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Incomplete configuration" |
583 | 243cdbcc | Michael Hanselmann | " (missing cluster.rsahostkeypub)")
|
584 | a8083063 | Iustin Pop | self._config_data = data
|
585 | a8083063 | Iustin Pop | self._config_time = st.st_mtime
|
586 | 264bb3c5 | Michael Hanselmann | self._config_size = st.st_size
|
587 | 264bb3c5 | Michael Hanselmann | self._config_inode = st.st_ino
|
588 | a8083063 | Iustin Pop | |
589 | a8083063 | Iustin Pop | def _DistributeConfig(self): |
590 | a8083063 | Iustin Pop | """Distribute the configuration to the other nodes.
|
591 | a8083063 | Iustin Pop |
|
592 | a8083063 | Iustin Pop | Currently, this only copies the configuration file. In the future,
|
593 | a8083063 | Iustin Pop | it could be used to encapsulate the 2/3-phase update mechanism.
|
594 | a8083063 | Iustin Pop |
|
595 | a8083063 | Iustin Pop | """
|
596 | a8083063 | Iustin Pop | if self._offline: |
597 | a8083063 | Iustin Pop | return True |
598 | a8083063 | Iustin Pop | bad = False
|
599 | f78ede4e | Guido Trotter | nodelist = self._UnlockedGetNodeList()
|
600 | 89e1fc26 | Iustin Pop | myhostname = self._my_hostname
|
601 | a8083063 | Iustin Pop | |
602 | 9ff994da | Guido Trotter | try:
|
603 | 9ff994da | Guido Trotter | nodelist.remove(myhostname) |
604 | 9ff994da | Guido Trotter | except ValueError: |
605 | 9ff994da | Guido Trotter | pass
|
606 | a8083063 | Iustin Pop | |
607 | 41362e70 | Guido Trotter | result = rpc.call_upload_file(nodelist, self._cfg_file)
|
608 | 41362e70 | Guido Trotter | for node in nodelist: |
609 | a8083063 | Iustin Pop | if not result[node]: |
610 | a8083063 | Iustin Pop | logger.Error("copy of file %s to node %s failed" %
|
611 | a8083063 | Iustin Pop | (self._cfg_file, node))
|
612 | a8083063 | Iustin Pop | bad = True
|
613 | a8083063 | Iustin Pop | return not bad |
614 | a8083063 | Iustin Pop | |
615 | a8083063 | Iustin Pop | def _WriteConfig(self, destination=None): |
616 | a8083063 | Iustin Pop | """Write the configuration data to persistent storage.
|
617 | a8083063 | Iustin Pop |
|
618 | a8083063 | Iustin Pop | """
|
619 | a8083063 | Iustin Pop | if destination is None: |
620 | a8083063 | Iustin Pop | destination = self._cfg_file
|
621 | a8083063 | Iustin Pop | self._BumpSerialNo()
|
622 | 8d14b30d | Iustin Pop | txt = serializer.Dump(self._config_data.ToDict())
|
623 | a8083063 | Iustin Pop | dir_name, file_name = os.path.split(destination) |
624 | a8083063 | Iustin Pop | fd, name = tempfile.mkstemp('.newconfig', file_name, dir_name)
|
625 | a8083063 | Iustin Pop | f = os.fdopen(fd, 'w')
|
626 | a8083063 | Iustin Pop | try:
|
627 | 8d14b30d | Iustin Pop | f.write(txt) |
628 | a8083063 | Iustin Pop | os.fsync(f.fileno()) |
629 | a8083063 | Iustin Pop | finally:
|
630 | a8083063 | Iustin Pop | f.close() |
631 | a8083063 | Iustin Pop | # we don't need to do os.close(fd) as f.close() did it
|
632 | a8083063 | Iustin Pop | os.rename(name, destination) |
633 | 14e15659 | Iustin Pop | self.write_count += 1 |
634 | fee9556c | Iustin Pop | # re-set our cache as not to re-read the config file
|
635 | fee9556c | Iustin Pop | try:
|
636 | fee9556c | Iustin Pop | st = os.stat(destination) |
637 | fee9556c | Iustin Pop | except OSError, err: |
638 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Can't stat config file: %s" % err) |
639 | fee9556c | Iustin Pop | self._config_time = st.st_mtime
|
640 | fee9556c | Iustin Pop | self._config_size = st.st_size
|
641 | fee9556c | Iustin Pop | self._config_inode = st.st_ino
|
642 | fee9556c | Iustin Pop | # and redistribute the config file
|
643 | a8083063 | Iustin Pop | self._DistributeConfig()
|
644 | a8083063 | Iustin Pop | |
645 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
646 | a8083063 | Iustin Pop | def InitConfig(self, node, primary_ip, secondary_ip, |
647 | 5fcdc80d | Iustin Pop | hostkeypub, mac_prefix, vg_name, def_bridge): |
648 | a8083063 | Iustin Pop | """Create the initial cluster configuration.
|
649 | a8083063 | Iustin Pop |
|
650 | a8083063 | Iustin Pop | It will contain the current node, which will also be the master
|
651 | a8083063 | Iustin Pop | node, and no instances or operating systmes.
|
652 | a8083063 | Iustin Pop |
|
653 | a8083063 | Iustin Pop | Args:
|
654 | a8083063 | Iustin Pop | node: the nodename of the initial node
|
655 | a8083063 | Iustin Pop | primary_ip: the IP address of the current host
|
656 | a8083063 | Iustin Pop | secondary_ip: the secondary IP of the current host or None
|
657 | a8083063 | Iustin Pop | hostkeypub: the public hostkey of this host
|
658 | a8083063 | Iustin Pop |
|
659 | 264bb3c5 | Michael Hanselmann | """
|
660 | a8083063 | Iustin Pop | hu_port = constants.FIRST_DRBD_PORT - 1
|
661 | 243cdbcc | Michael Hanselmann | globalconfig = objects.Cluster(serial_no=1,
|
662 | a8083063 | Iustin Pop | rsahostkeypub=hostkeypub, |
663 | a8083063 | Iustin Pop | highest_used_port=hu_port, |
664 | a8083063 | Iustin Pop | mac_prefix=mac_prefix, |
665 | a8083063 | Iustin Pop | volume_group_name=vg_name, |
666 | b2fddf63 | Iustin Pop | default_bridge=def_bridge, |
667 | b2fddf63 | Iustin Pop | tcpudp_port_pool=set())
|
668 | a8083063 | Iustin Pop | if secondary_ip is None: |
669 | a8083063 | Iustin Pop | secondary_ip = primary_ip |
670 | a8083063 | Iustin Pop | nodeconfig = objects.Node(name=node, primary_ip=primary_ip, |
671 | a8083063 | Iustin Pop | secondary_ip=secondary_ip) |
672 | a8083063 | Iustin Pop | |
673 | a8083063 | Iustin Pop | self._config_data = objects.ConfigData(nodes={node: nodeconfig},
|
674 | a8083063 | Iustin Pop | instances={}, |
675 | b2fddf63 | Iustin Pop | cluster=globalconfig) |
676 | a8083063 | Iustin Pop | self._WriteConfig()
|
677 | a8083063 | Iustin Pop | |
678 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
679 | a8083063 | Iustin Pop | def GetVGName(self): |
680 | a8083063 | Iustin Pop | """Return the volume group name.
|
681 | a8083063 | Iustin Pop |
|
682 | a8083063 | Iustin Pop | """
|
683 | a8083063 | Iustin Pop | self._OpenConfig()
|
684 | a8083063 | Iustin Pop | return self._config_data.cluster.volume_group_name |
685 | a8083063 | Iustin Pop | |
686 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
687 | 89ff8e15 | Manuel Franceschini | def SetVGName(self, vg_name): |
688 | 89ff8e15 | Manuel Franceschini | """Set the volume group name.
|
689 | 89ff8e15 | Manuel Franceschini |
|
690 | 89ff8e15 | Manuel Franceschini | """
|
691 | 89ff8e15 | Manuel Franceschini | self._OpenConfig()
|
692 | 2d4011cd | Manuel Franceschini | self._config_data.cluster.volume_group_name = vg_name
|
693 | 89ff8e15 | Manuel Franceschini | self._WriteConfig()
|
694 | 89ff8e15 | Manuel Franceschini | |
695 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
696 | a8083063 | Iustin Pop | def GetDefBridge(self): |
697 | a8083063 | Iustin Pop | """Return the default bridge.
|
698 | a8083063 | Iustin Pop |
|
699 | a8083063 | Iustin Pop | """
|
700 | a8083063 | Iustin Pop | self._OpenConfig()
|
701 | a8083063 | Iustin Pop | return self._config_data.cluster.default_bridge |
702 | a8083063 | Iustin Pop | |
703 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
704 | a8083063 | Iustin Pop | def GetMACPrefix(self): |
705 | a8083063 | Iustin Pop | """Return the mac prefix.
|
706 | a8083063 | Iustin Pop |
|
707 | a8083063 | Iustin Pop | """
|
708 | a8083063 | Iustin Pop | self._OpenConfig()
|
709 | a8083063 | Iustin Pop | return self._config_data.cluster.mac_prefix |
710 | 62779dd0 | Iustin Pop | |
711 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
712 | 62779dd0 | Iustin Pop | def GetClusterInfo(self): |
713 | 62779dd0 | Iustin Pop | """Returns informations about the cluster
|
714 | 62779dd0 | Iustin Pop |
|
715 | 62779dd0 | Iustin Pop | Returns:
|
716 | 62779dd0 | Iustin Pop | the cluster object
|
717 | 62779dd0 | Iustin Pop |
|
718 | 62779dd0 | Iustin Pop | """
|
719 | 62779dd0 | Iustin Pop | self._OpenConfig()
|
720 | 62779dd0 | Iustin Pop | |
721 | 62779dd0 | Iustin Pop | return self._config_data.cluster |
722 | e00fb268 | Iustin Pop | |
723 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
724 | e00fb268 | Iustin Pop | def Update(self, target): |
725 | e00fb268 | Iustin Pop | """Notify function to be called after updates.
|
726 | e00fb268 | Iustin Pop |
|
727 | e00fb268 | Iustin Pop | This function must be called when an object (as returned by
|
728 | e00fb268 | Iustin Pop | GetInstanceInfo, GetNodeInfo, GetCluster) has been updated and the
|
729 | e00fb268 | Iustin Pop | caller wants the modifications saved to the backing store. Note
|
730 | e00fb268 | Iustin Pop | that all modified objects will be saved, but the target argument
|
731 | e00fb268 | Iustin Pop | is the one the caller wants to ensure that it's saved.
|
732 | e00fb268 | Iustin Pop |
|
733 | e00fb268 | Iustin Pop | """
|
734 | e00fb268 | Iustin Pop | if self._config_data is None: |
735 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Configuration file not read," |
736 | 3ecf6786 | Iustin Pop | " cannot save.")
|
737 | e00fb268 | Iustin Pop | if isinstance(target, objects.Cluster): |
738 | e00fb268 | Iustin Pop | test = target == self._config_data.cluster
|
739 | e00fb268 | Iustin Pop | elif isinstance(target, objects.Node): |
740 | e00fb268 | Iustin Pop | test = target in self._config_data.nodes.values() |
741 | e00fb268 | Iustin Pop | elif isinstance(target, objects.Instance): |
742 | e00fb268 | Iustin Pop | test = target in self._config_data.instances.values() |
743 | e00fb268 | Iustin Pop | else:
|
744 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Invalid object type (%s) passed to" |
745 | 3ecf6786 | Iustin Pop | " ConfigWriter.Update" % type(target)) |
746 | e00fb268 | Iustin Pop | if not test: |
747 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Configuration updated since object" |
748 | 3ecf6786 | Iustin Pop | " has been read or unknown object")
|
749 | e00fb268 | Iustin Pop | self._WriteConfig() |