root / lib / config.py @ ec0292f1
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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 | d8470559 | Michael Hanselmann | import logging |
38 | a8083063 | Iustin Pop | |
39 | a8083063 | Iustin Pop | from ganeti import errors |
40 | f78ede4e | Guido Trotter | from ganeti import locking |
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 | |
47 | 243cdbcc | Michael Hanselmann | |
48 | f78ede4e | Guido Trotter | _config_lock = locking.SharedLock() |
49 | f78ede4e | Guido Trotter | |
50 | f78ede4e | Guido Trotter | |
51 | 5b263ed7 | Michael Hanselmann | def _ValidateConfig(data): |
52 | 5b263ed7 | Michael Hanselmann | if data.version != constants.CONFIG_VERSION:
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53 | 243cdbcc | Michael Hanselmann | raise errors.ConfigurationError("Cluster configuration version" |
54 | 243cdbcc | Michael Hanselmann | " mismatch, got %s instead of %s" %
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55 | 5b263ed7 | Michael Hanselmann | (data.version, |
56 | 243cdbcc | Michael Hanselmann | constants.CONFIG_VERSION)) |
57 | a8083063 | Iustin Pop | |
58 | 319856a9 | Michael Hanselmann | |
59 | a8083063 | Iustin Pop | class ConfigWriter: |
60 | 098c0958 | Michael Hanselmann | """The interface to the cluster configuration.
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61 | a8083063 | Iustin Pop |
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62 | 098c0958 | Michael Hanselmann | """
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63 | a8083063 | Iustin Pop | def __init__(self, cfg_file=None, offline=False): |
64 | 14e15659 | Iustin Pop | self.write_count = 0 |
65 | f78ede4e | Guido Trotter | self._lock = _config_lock
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66 | a8083063 | Iustin Pop | self._config_data = None |
67 | a8083063 | Iustin Pop | self._offline = offline
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68 | a8083063 | Iustin Pop | if cfg_file is None: |
69 | a8083063 | Iustin Pop | self._cfg_file = constants.CLUSTER_CONF_FILE
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70 | a8083063 | Iustin Pop | else:
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71 | a8083063 | Iustin Pop | self._cfg_file = cfg_file
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72 | 923b1523 | Iustin Pop | self._temporary_ids = set() |
73 | a81c53c9 | Iustin Pop | self._temporary_drbds = {}
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74 | 89e1fc26 | Iustin Pop | # Note: in order to prevent errors when resolving our name in
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75 | 89e1fc26 | Iustin Pop | # _DistributeConfig, we compute it here once and reuse it; it's
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76 | 89e1fc26 | Iustin Pop | # better to raise an error before starting to modify the config
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77 | 89e1fc26 | Iustin Pop | # file than after it was modified
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78 | 89e1fc26 | Iustin Pop | self._my_hostname = utils.HostInfo().name
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79 | 3d3a04bc | Iustin Pop | self._OpenConfig()
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80 | a8083063 | Iustin Pop | |
81 | a8083063 | Iustin Pop | # this method needs to be static, so that we can call it on the class
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82 | a8083063 | Iustin Pop | @staticmethod
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83 | a8083063 | Iustin Pop | def IsCluster(): |
84 | a8083063 | Iustin Pop | """Check if the cluster is configured.
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85 | a8083063 | Iustin Pop |
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86 | a8083063 | Iustin Pop | """
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87 | a8083063 | Iustin Pop | return os.path.exists(constants.CLUSTER_CONF_FILE)
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88 | a8083063 | Iustin Pop | |
89 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
90 | a8083063 | Iustin Pop | def GenerateMAC(self): |
91 | a8083063 | Iustin Pop | """Generate a MAC for an instance.
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92 | a8083063 | Iustin Pop |
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93 | a8083063 | Iustin Pop | This should check the current instances for duplicates.
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94 | a8083063 | Iustin Pop |
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95 | a8083063 | Iustin Pop | """
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96 | a8083063 | Iustin Pop | prefix = self._config_data.cluster.mac_prefix
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97 | a8083063 | Iustin Pop | all_macs = self._AllMACs()
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98 | a8083063 | Iustin Pop | retries = 64
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99 | a8083063 | Iustin Pop | while retries > 0: |
100 | a8083063 | Iustin Pop | byte1 = random.randrange(0, 256) |
101 | a8083063 | Iustin Pop | byte2 = random.randrange(0, 256) |
102 | a8083063 | Iustin Pop | byte3 = random.randrange(0, 256) |
103 | a8083063 | Iustin Pop | mac = "%s:%02x:%02x:%02x" % (prefix, byte1, byte2, byte3)
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104 | a8083063 | Iustin Pop | if mac not in all_macs: |
105 | a8083063 | Iustin Pop | break
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106 | a8083063 | Iustin Pop | retries -= 1
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107 | a8083063 | Iustin Pop | else:
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108 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Can't generate unique MAC") |
109 | a8083063 | Iustin Pop | return mac
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110 | a8083063 | Iustin Pop | |
111 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
112 | 1862d460 | Alexander Schreiber | def IsMacInUse(self, mac): |
113 | 1862d460 | Alexander Schreiber | """Predicate: check if the specified MAC is in use in the Ganeti cluster.
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114 | 1862d460 | Alexander Schreiber |
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115 | 1862d460 | Alexander Schreiber | This only checks instances managed by this cluster, it does not
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116 | 1862d460 | Alexander Schreiber | check for potential collisions elsewhere.
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117 | 1862d460 | Alexander Schreiber |
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118 | 1862d460 | Alexander Schreiber | """
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119 | 1862d460 | Alexander Schreiber | all_macs = self._AllMACs()
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120 | 1862d460 | Alexander Schreiber | return mac in all_macs |
121 | 1862d460 | Alexander Schreiber | |
122 | f9518d38 | Iustin Pop | @locking.ssynchronized(_config_lock, shared=1) |
123 | f9518d38 | Iustin Pop | def GenerateDRBDSecret(self): |
124 | f9518d38 | Iustin Pop | """Generate a DRBD secret.
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125 | f9518d38 | Iustin Pop |
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126 | f9518d38 | Iustin Pop | This checks the current disks for duplicates.
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127 | f9518d38 | Iustin Pop |
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128 | f9518d38 | Iustin Pop | """
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129 | f9518d38 | Iustin Pop | all_secrets = self._AllDRBDSecrets()
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130 | f9518d38 | Iustin Pop | retries = 64
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131 | f9518d38 | Iustin Pop | while retries > 0: |
132 | f9518d38 | Iustin Pop | secret = utils.GenerateSecret() |
133 | f9518d38 | Iustin Pop | if secret not in all_secrets: |
134 | f9518d38 | Iustin Pop | break
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135 | f9518d38 | Iustin Pop | retries -= 1
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136 | f9518d38 | Iustin Pop | else:
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137 | f9518d38 | Iustin Pop | raise errors.ConfigurationError("Can't generate unique DRBD secret") |
138 | f9518d38 | Iustin Pop | return secret
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139 | f9518d38 | Iustin Pop | |
140 | 923b1523 | Iustin Pop | def _ComputeAllLVs(self): |
141 | 923b1523 | Iustin Pop | """Compute the list of all LVs.
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142 | 923b1523 | Iustin Pop |
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143 | 923b1523 | Iustin Pop | """
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144 | 923b1523 | Iustin Pop | lvnames = set()
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145 | 923b1523 | Iustin Pop | for instance in self._config_data.instances.values(): |
146 | 923b1523 | Iustin Pop | node_data = instance.MapLVsByNode() |
147 | 923b1523 | Iustin Pop | for lv_list in node_data.values(): |
148 | 923b1523 | Iustin Pop | lvnames.update(lv_list) |
149 | 923b1523 | Iustin Pop | return lvnames
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150 | 923b1523 | Iustin Pop | |
151 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
152 | 923b1523 | Iustin Pop | def GenerateUniqueID(self, exceptions=None): |
153 | 923b1523 | Iustin Pop | """Generate an unique disk name.
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154 | 923b1523 | Iustin Pop |
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155 | 923b1523 | Iustin Pop | This checks the current node, instances and disk names for
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156 | 923b1523 | Iustin Pop | duplicates.
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157 | 923b1523 | Iustin Pop |
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158 | 923b1523 | Iustin Pop | Args:
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159 | 923b1523 | Iustin Pop | - exceptions: a list with some other names which should be checked
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160 | 923b1523 | Iustin Pop | for uniqueness (used for example when you want to get
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161 | 923b1523 | Iustin Pop | more than one id at one time without adding each one in
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162 | 923b1523 | Iustin Pop | turn to the config file
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163 | 923b1523 | Iustin Pop |
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164 | 923b1523 | Iustin Pop | Returns: the unique id as a string
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165 | 923b1523 | Iustin Pop |
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166 | 923b1523 | Iustin Pop | """
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167 | 923b1523 | Iustin Pop | existing = set()
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168 | 923b1523 | Iustin Pop | existing.update(self._temporary_ids)
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169 | 923b1523 | Iustin Pop | existing.update(self._ComputeAllLVs())
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170 | 923b1523 | Iustin Pop | existing.update(self._config_data.instances.keys())
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171 | 923b1523 | Iustin Pop | existing.update(self._config_data.nodes.keys())
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172 | 923b1523 | Iustin Pop | if exceptions is not None: |
173 | 923b1523 | Iustin Pop | existing.update(exceptions) |
174 | 923b1523 | Iustin Pop | retries = 64
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175 | 923b1523 | Iustin Pop | while retries > 0: |
176 | 24818e8f | Michael Hanselmann | unique_id = utils.NewUUID() |
177 | 923b1523 | Iustin Pop | if unique_id not in existing and unique_id is not None: |
178 | 923b1523 | Iustin Pop | break
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179 | 923b1523 | Iustin Pop | else:
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180 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Not able generate an unique ID" |
181 | 3ecf6786 | Iustin Pop | " (last tried ID: %s" % unique_id)
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182 | 923b1523 | Iustin Pop | self._temporary_ids.add(unique_id)
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183 | 923b1523 | Iustin Pop | return unique_id
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184 | 923b1523 | Iustin Pop | |
185 | a8083063 | Iustin Pop | def _AllMACs(self): |
186 | a8083063 | Iustin Pop | """Return all MACs present in the config.
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187 | a8083063 | Iustin Pop |
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188 | a8083063 | Iustin Pop | """
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189 | a8083063 | Iustin Pop | result = [] |
190 | a8083063 | Iustin Pop | for instance in self._config_data.instances.values(): |
191 | a8083063 | Iustin Pop | for nic in instance.nics: |
192 | a8083063 | Iustin Pop | result.append(nic.mac) |
193 | a8083063 | Iustin Pop | |
194 | a8083063 | Iustin Pop | return result
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195 | a8083063 | Iustin Pop | |
196 | f9518d38 | Iustin Pop | def _AllDRBDSecrets(self): |
197 | f9518d38 | Iustin Pop | """Return all DRBD secrets present in the config.
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198 | f9518d38 | Iustin Pop |
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199 | f9518d38 | Iustin Pop | """
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200 | f9518d38 | Iustin Pop | def helper(disk, result): |
201 | f9518d38 | Iustin Pop | """Recursively gather secrets from this disk."""
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202 | f9518d38 | Iustin Pop | if disk.dev_type == constants.DT_DRBD8:
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203 | f9518d38 | Iustin Pop | result.append(disk.logical_id[5])
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204 | f9518d38 | Iustin Pop | if disk.children:
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205 | f9518d38 | Iustin Pop | for child in disk.children: |
206 | f9518d38 | Iustin Pop | helper(child, result) |
207 | f9518d38 | Iustin Pop | |
208 | f9518d38 | Iustin Pop | result = [] |
209 | f9518d38 | Iustin Pop | for instance in self._config_data.instances.values(): |
210 | f9518d38 | Iustin Pop | for disk in instance.disks: |
211 | f9518d38 | Iustin Pop | helper(disk, result) |
212 | f9518d38 | Iustin Pop | |
213 | f9518d38 | Iustin Pop | return result
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214 | f9518d38 | Iustin Pop | |
215 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
216 | a8083063 | Iustin Pop | def VerifyConfig(self): |
217 | a8efbb40 | Iustin Pop | """Verify function.
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218 | a8efbb40 | Iustin Pop |
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219 | a8083063 | Iustin Pop | """
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220 | a8083063 | Iustin Pop | result = [] |
221 | a8083063 | Iustin Pop | seen_macs = [] |
222 | 48ce9fd9 | Iustin Pop | ports = {} |
223 | a8083063 | Iustin Pop | data = self._config_data
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224 | a8083063 | Iustin Pop | for instance_name in data.instances: |
225 | a8083063 | Iustin Pop | instance = data.instances[instance_name] |
226 | a8083063 | Iustin Pop | if instance.primary_node not in data.nodes: |
227 | 8522ceeb | Iustin Pop | result.append("instance '%s' has invalid primary node '%s'" %
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228 | a8083063 | Iustin Pop | (instance_name, instance.primary_node)) |
229 | a8083063 | Iustin Pop | for snode in instance.secondary_nodes: |
230 | a8083063 | Iustin Pop | if snode not in data.nodes: |
231 | 8522ceeb | Iustin Pop | result.append("instance '%s' has invalid secondary node '%s'" %
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232 | a8083063 | Iustin Pop | (instance_name, snode)) |
233 | a8083063 | Iustin Pop | for idx, nic in enumerate(instance.nics): |
234 | a8083063 | Iustin Pop | if nic.mac in seen_macs: |
235 | 8522ceeb | Iustin Pop | result.append("instance '%s' has NIC %d mac %s duplicate" %
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236 | a8083063 | Iustin Pop | (instance_name, idx, nic.mac)) |
237 | a8083063 | Iustin Pop | else:
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238 | a8083063 | Iustin Pop | seen_macs.append(nic.mac) |
239 | 48ce9fd9 | Iustin Pop | |
240 | 48ce9fd9 | Iustin Pop | # gather the drbd ports for duplicate checks
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241 | 48ce9fd9 | Iustin Pop | for dsk in instance.disks: |
242 | 48ce9fd9 | Iustin Pop | if dsk.dev_type in constants.LDS_DRBD: |
243 | 48ce9fd9 | Iustin Pop | tcp_port = dsk.logical_id[2]
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244 | 48ce9fd9 | Iustin Pop | if tcp_port not in ports: |
245 | 48ce9fd9 | Iustin Pop | ports[tcp_port] = [] |
246 | 48ce9fd9 | Iustin Pop | ports[tcp_port].append((instance.name, "drbd disk %s" % dsk.iv_name))
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247 | 48ce9fd9 | Iustin Pop | # gather network port reservation
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248 | 48ce9fd9 | Iustin Pop | net_port = getattr(instance, "network_port", None) |
249 | 48ce9fd9 | Iustin Pop | if net_port is not None: |
250 | 48ce9fd9 | Iustin Pop | if net_port not in ports: |
251 | 48ce9fd9 | Iustin Pop | ports[net_port] = [] |
252 | 48ce9fd9 | Iustin Pop | ports[net_port].append((instance.name, "network port"))
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253 | 48ce9fd9 | Iustin Pop | |
254 | 48ce9fd9 | Iustin Pop | # cluster-wide pool of free ports
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255 | a8efbb40 | Iustin Pop | for free_port in data.cluster.tcpudp_port_pool: |
256 | 48ce9fd9 | Iustin Pop | if free_port not in ports: |
257 | 48ce9fd9 | Iustin Pop | ports[free_port] = [] |
258 | 48ce9fd9 | Iustin Pop | ports[free_port].append(("cluster", "port marked as free")) |
259 | 48ce9fd9 | Iustin Pop | |
260 | 48ce9fd9 | Iustin Pop | # compute tcp/udp duplicate ports
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261 | 48ce9fd9 | Iustin Pop | keys = ports.keys() |
262 | 48ce9fd9 | Iustin Pop | keys.sort() |
263 | 48ce9fd9 | Iustin Pop | for pnum in keys: |
264 | 48ce9fd9 | Iustin Pop | pdata = ports[pnum] |
265 | 48ce9fd9 | Iustin Pop | if len(pdata) > 1: |
266 | 48ce9fd9 | Iustin Pop | txt = ", ".join(["%s/%s" % val for val in pdata]) |
267 | 48ce9fd9 | Iustin Pop | result.append("tcp/udp port %s has duplicates: %s" % (pnum, txt))
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268 | 48ce9fd9 | Iustin Pop | |
269 | 48ce9fd9 | Iustin Pop | # highest used tcp port check
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270 | 48ce9fd9 | Iustin Pop | if keys:
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271 | a8efbb40 | Iustin Pop | if keys[-1] > data.cluster.highest_used_port: |
272 | 48ce9fd9 | Iustin Pop | result.append("Highest used port mismatch, saved %s, computed %s" %
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273 | a8efbb40 | Iustin Pop | (data.cluster.highest_used_port, keys[-1]))
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274 | a8efbb40 | Iustin Pop | |
275 | 3a26773f | Iustin Pop | if not data.nodes[data.cluster.master_node].master_candidate: |
276 | 3a26773f | Iustin Pop | result.append("Master node is not a master candidate")
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277 | 3a26773f | Iustin Pop | |
278 | ec0292f1 | Iustin Pop | mc_now, mc_max = self._UnlockedGetMasterCandidateStats()
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279 | ec0292f1 | Iustin Pop | if mc_now < mc_max:
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280 | ec0292f1 | Iustin Pop | result.append("Not enough master candidates: actual %d, target %d" %
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281 | ec0292f1 | Iustin Pop | (mc_now, mc_max)) |
282 | 48ce9fd9 | Iustin Pop | |
283 | a8083063 | Iustin Pop | return result
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284 | a8083063 | Iustin Pop | |
285 | f78ede4e | Guido Trotter | def _UnlockedSetDiskID(self, disk, node_name): |
286 | a8083063 | Iustin Pop | """Convert the unique ID to the ID needed on the target nodes.
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287 | a8083063 | Iustin Pop |
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288 | a8083063 | Iustin Pop | This is used only for drbd, which needs ip/port configuration.
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289 | a8083063 | Iustin Pop |
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290 | a8083063 | Iustin Pop | The routine descends down and updates its children also, because
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291 | a8083063 | Iustin Pop | this helps when the only the top device is passed to the remote
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292 | a8083063 | Iustin Pop | node.
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293 | a8083063 | Iustin Pop |
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294 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
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295 | f78ede4e | Guido Trotter |
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296 | a8083063 | Iustin Pop | """
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297 | a8083063 | Iustin Pop | if disk.children:
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298 | a8083063 | Iustin Pop | for child in disk.children: |
299 | f78ede4e | Guido Trotter | self._UnlockedSetDiskID(child, node_name)
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300 | a8083063 | Iustin Pop | |
301 | a8083063 | Iustin Pop | if disk.logical_id is None and disk.physical_id is not None: |
302 | a8083063 | Iustin Pop | return
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303 | ffa1c0dc | Iustin Pop | if disk.dev_type == constants.LD_DRBD8:
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304 | f9518d38 | Iustin Pop | pnode, snode, port, pminor, sminor, secret = disk.logical_id |
305 | a8083063 | Iustin Pop | if node_name not in (pnode, snode): |
306 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("DRBD device not knowing node %s" % |
307 | 3ecf6786 | Iustin Pop | node_name) |
308 | f78ede4e | Guido Trotter | pnode_info = self._UnlockedGetNodeInfo(pnode)
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309 | f78ede4e | Guido Trotter | snode_info = self._UnlockedGetNodeInfo(snode)
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310 | a8083063 | Iustin Pop | if pnode_info is None or snode_info is None: |
311 | a8083063 | Iustin Pop | raise errors.ConfigurationError("Can't find primary or secondary node" |
312 | a8083063 | Iustin Pop | " for %s" % str(disk)) |
313 | ffa1c0dc | Iustin Pop | p_data = (pnode_info.secondary_ip, port) |
314 | ffa1c0dc | Iustin Pop | s_data = (snode_info.secondary_ip, port) |
315 | a8083063 | Iustin Pop | if pnode == node_name:
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316 | f9518d38 | Iustin Pop | disk.physical_id = p_data + s_data + (pminor, secret) |
317 | a8083063 | Iustin Pop | else: # it must be secondary, we tested above |
318 | f9518d38 | Iustin Pop | disk.physical_id = s_data + p_data + (sminor, secret) |
319 | a8083063 | Iustin Pop | else:
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320 | a8083063 | Iustin Pop | disk.physical_id = disk.logical_id |
321 | a8083063 | Iustin Pop | return
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322 | a8083063 | Iustin Pop | |
323 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
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324 | f78ede4e | Guido Trotter | def SetDiskID(self, disk, node_name): |
325 | f78ede4e | Guido Trotter | """Convert the unique ID to the ID needed on the target nodes.
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326 | f78ede4e | Guido Trotter |
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327 | f78ede4e | Guido Trotter | This is used only for drbd, which needs ip/port configuration.
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328 | f78ede4e | Guido Trotter |
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329 | f78ede4e | Guido Trotter | The routine descends down and updates its children also, because
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330 | f78ede4e | Guido Trotter | this helps when the only the top device is passed to the remote
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331 | f78ede4e | Guido Trotter | node.
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332 | f78ede4e | Guido Trotter |
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333 | f78ede4e | Guido Trotter | """
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334 | f78ede4e | Guido Trotter | return self._UnlockedSetDiskID(disk, node_name) |
335 | f78ede4e | Guido Trotter | |
336 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
337 | b2fddf63 | Iustin Pop | def AddTcpUdpPort(self, port): |
338 | b2fddf63 | Iustin Pop | """Adds a new port to the available port pool.
|
339 | b2fddf63 | Iustin Pop |
|
340 | b2fddf63 | Iustin Pop | """
|
341 | 264bb3c5 | Michael Hanselmann | if not isinstance(port, int): |
342 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Invalid type passed for port") |
343 | 264bb3c5 | Michael Hanselmann | |
344 | b2fddf63 | Iustin Pop | self._config_data.cluster.tcpudp_port_pool.add(port)
|
345 | 264bb3c5 | Michael Hanselmann | self._WriteConfig()
|
346 | 264bb3c5 | Michael Hanselmann | |
347 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
348 | b2fddf63 | Iustin Pop | def GetPortList(self): |
349 | 264bb3c5 | Michael Hanselmann | """Returns a copy of the current port list.
|
350 | 264bb3c5 | Michael Hanselmann |
|
351 | 264bb3c5 | Michael Hanselmann | """
|
352 | b2fddf63 | Iustin Pop | return self._config_data.cluster.tcpudp_port_pool.copy() |
353 | 264bb3c5 | Michael Hanselmann | |
354 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
355 | a8083063 | Iustin Pop | def AllocatePort(self): |
356 | a8083063 | Iustin Pop | """Allocate a port.
|
357 | a8083063 | Iustin Pop |
|
358 | b2fddf63 | Iustin Pop | The port will be taken from the available port pool or from the
|
359 | b2fddf63 | Iustin Pop | default port range (and in this case we increase
|
360 | b2fddf63 | Iustin Pop | highest_used_port).
|
361 | a8083063 | Iustin Pop |
|
362 | a8083063 | Iustin Pop | """
|
363 | 264bb3c5 | Michael Hanselmann | # If there are TCP/IP ports configured, we use them first.
|
364 | b2fddf63 | Iustin Pop | if self._config_data.cluster.tcpudp_port_pool: |
365 | b2fddf63 | Iustin Pop | port = self._config_data.cluster.tcpudp_port_pool.pop()
|
366 | 264bb3c5 | Michael Hanselmann | else:
|
367 | 264bb3c5 | Michael Hanselmann | port = self._config_data.cluster.highest_used_port + 1 |
368 | 264bb3c5 | Michael Hanselmann | if port >= constants.LAST_DRBD_PORT:
|
369 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("The highest used port is greater" |
370 | 3ecf6786 | Iustin Pop | " than %s. Aborting." %
|
371 | 3ecf6786 | Iustin Pop | constants.LAST_DRBD_PORT) |
372 | 264bb3c5 | Michael Hanselmann | self._config_data.cluster.highest_used_port = port
|
373 | a8083063 | Iustin Pop | |
374 | a8083063 | Iustin Pop | self._WriteConfig()
|
375 | a8083063 | Iustin Pop | return port
|
376 | a8083063 | Iustin Pop | |
377 | a81c53c9 | Iustin Pop | def _ComputeDRBDMap(self, instance): |
378 | a81c53c9 | Iustin Pop | """Compute the used DRBD minor/nodes.
|
379 | a81c53c9 | Iustin Pop |
|
380 | a81c53c9 | Iustin Pop | Return: dictionary of node_name: dict of minor: instance_name. The
|
381 | a81c53c9 | Iustin Pop | returned dict will have all the nodes in it (even if with an empty
|
382 | a81c53c9 | Iustin Pop | list).
|
383 | a81c53c9 | Iustin Pop |
|
384 | a81c53c9 | Iustin Pop | """
|
385 | a81c53c9 | Iustin Pop | def _AppendUsedPorts(instance_name, disk, used): |
386 | f9518d38 | Iustin Pop | if disk.dev_type == constants.LD_DRBD8 and len(disk.logical_id) >= 5: |
387 | f9518d38 | Iustin Pop | nodeA, nodeB, dummy, minorA, minorB = disk.logical_id[:5]
|
388 | a81c53c9 | Iustin Pop | for node, port in ((nodeA, minorA), (nodeB, minorB)): |
389 | a81c53c9 | Iustin Pop | assert node in used, "Instance node not found in node list" |
390 | a81c53c9 | Iustin Pop | if port in used[node]: |
391 | a81c53c9 | Iustin Pop | raise errors.ProgrammerError("DRBD minor already used:" |
392 | a81c53c9 | Iustin Pop | " %s/%s, %s/%s" %
|
393 | a81c53c9 | Iustin Pop | (node, port, instance_name, |
394 | a81c53c9 | Iustin Pop | used[node][port])) |
395 | a81c53c9 | Iustin Pop | |
396 | a81c53c9 | Iustin Pop | used[node][port] = instance_name |
397 | a81c53c9 | Iustin Pop | if disk.children:
|
398 | a81c53c9 | Iustin Pop | for child in disk.children: |
399 | a81c53c9 | Iustin Pop | _AppendUsedPorts(instance_name, child, used) |
400 | a81c53c9 | Iustin Pop | |
401 | a81c53c9 | Iustin Pop | my_dict = dict((node, {}) for node in self._config_data.nodes) |
402 | a81c53c9 | Iustin Pop | for (node, minor), instance in self._temporary_drbds.iteritems(): |
403 | a81c53c9 | Iustin Pop | my_dict[node][minor] = instance |
404 | a81c53c9 | Iustin Pop | for instance in self._config_data.instances.itervalues(): |
405 | a81c53c9 | Iustin Pop | for disk in instance.disks: |
406 | a81c53c9 | Iustin Pop | _AppendUsedPorts(instance.name, disk, my_dict) |
407 | a81c53c9 | Iustin Pop | return my_dict
|
408 | a81c53c9 | Iustin Pop | |
409 | a81c53c9 | Iustin Pop | @locking.ssynchronized(_config_lock)
|
410 | a81c53c9 | Iustin Pop | def AllocateDRBDMinor(self, nodes, instance): |
411 | a81c53c9 | Iustin Pop | """Allocate a drbd minor.
|
412 | a81c53c9 | Iustin Pop |
|
413 | a81c53c9 | Iustin Pop | The free minor will be automatically computed from the existing
|
414 | a81c53c9 | Iustin Pop | devices. A node can be given multiple times in order to allocate
|
415 | a81c53c9 | Iustin Pop | multiple minors. The result is the list of minors, in the same
|
416 | a81c53c9 | Iustin Pop | order as the passed nodes.
|
417 | a81c53c9 | Iustin Pop |
|
418 | a81c53c9 | Iustin Pop | """
|
419 | a81c53c9 | Iustin Pop | d_map = self._ComputeDRBDMap(instance)
|
420 | a81c53c9 | Iustin Pop | result = [] |
421 | a81c53c9 | Iustin Pop | for nname in nodes: |
422 | a81c53c9 | Iustin Pop | ndata = d_map[nname] |
423 | a81c53c9 | Iustin Pop | if not ndata: |
424 | a81c53c9 | Iustin Pop | # no minors used, we can start at 0
|
425 | a81c53c9 | Iustin Pop | result.append(0)
|
426 | a81c53c9 | Iustin Pop | ndata[0] = instance
|
427 | d48663e4 | Iustin Pop | self._temporary_drbds[(nname, 0)] = instance |
428 | a81c53c9 | Iustin Pop | continue
|
429 | a81c53c9 | Iustin Pop | keys = ndata.keys() |
430 | a81c53c9 | Iustin Pop | keys.sort() |
431 | a81c53c9 | Iustin Pop | ffree = utils.FirstFree(keys) |
432 | a81c53c9 | Iustin Pop | if ffree is None: |
433 | a81c53c9 | Iustin Pop | # return the next minor
|
434 | a81c53c9 | Iustin Pop | # TODO: implement high-limit check
|
435 | a81c53c9 | Iustin Pop | minor = keys[-1] + 1 |
436 | a81c53c9 | Iustin Pop | else:
|
437 | a81c53c9 | Iustin Pop | minor = ffree |
438 | a81c53c9 | Iustin Pop | result.append(minor) |
439 | a81c53c9 | Iustin Pop | ndata[minor] = instance |
440 | a81c53c9 | Iustin Pop | assert (nname, minor) not in self._temporary_drbds, \ |
441 | a81c53c9 | Iustin Pop | "Attempt to reuse reserved DRBD minor"
|
442 | a81c53c9 | Iustin Pop | self._temporary_drbds[(nname, minor)] = instance
|
443 | a81c53c9 | Iustin Pop | logging.debug("Request to allocate drbd minors, input: %s, returning %s",
|
444 | a81c53c9 | Iustin Pop | nodes, result) |
445 | a81c53c9 | Iustin Pop | return result
|
446 | a81c53c9 | Iustin Pop | |
447 | a81c53c9 | Iustin Pop | @locking.ssynchronized(_config_lock)
|
448 | a81c53c9 | Iustin Pop | def ReleaseDRBDMinors(self, instance): |
449 | a81c53c9 | Iustin Pop | """Release temporary drbd minors allocated for a given instance.
|
450 | a81c53c9 | Iustin Pop |
|
451 | a81c53c9 | Iustin Pop | This should be called on both the error paths and on the success
|
452 | a81c53c9 | Iustin Pop | paths (after the instance has been added or updated).
|
453 | a81c53c9 | Iustin Pop |
|
454 | a81c53c9 | Iustin Pop | @type instance: string
|
455 | a81c53c9 | Iustin Pop | @param instance: the instance for which temporary minors should be
|
456 | a81c53c9 | Iustin Pop | released
|
457 | a81c53c9 | Iustin Pop |
|
458 | a81c53c9 | Iustin Pop | """
|
459 | a81c53c9 | Iustin Pop | for key, name in self._temporary_drbds.items(): |
460 | a81c53c9 | Iustin Pop | if name == instance:
|
461 | a81c53c9 | Iustin Pop | del self._temporary_drbds[key] |
462 | a81c53c9 | Iustin Pop | |
463 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
464 | 4a8b186a | Michael Hanselmann | def GetConfigVersion(self): |
465 | 4a8b186a | Michael Hanselmann | """Get the configuration version.
|
466 | 4a8b186a | Michael Hanselmann |
|
467 | 4a8b186a | Michael Hanselmann | @return: Config version
|
468 | 4a8b186a | Michael Hanselmann |
|
469 | 4a8b186a | Michael Hanselmann | """
|
470 | 4a8b186a | Michael Hanselmann | return self._config_data.version |
471 | 4a8b186a | Michael Hanselmann | |
472 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
473 | 4a8b186a | Michael Hanselmann | def GetClusterName(self): |
474 | 4a8b186a | Michael Hanselmann | """Get cluster name.
|
475 | 4a8b186a | Michael Hanselmann |
|
476 | 4a8b186a | Michael Hanselmann | @return: Cluster name
|
477 | 4a8b186a | Michael Hanselmann |
|
478 | 4a8b186a | Michael Hanselmann | """
|
479 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.cluster_name |
480 | 4a8b186a | Michael Hanselmann | |
481 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
482 | 4a8b186a | Michael Hanselmann | def GetMasterNode(self): |
483 | 4a8b186a | Michael Hanselmann | """Get the hostname of the master node for this cluster.
|
484 | 4a8b186a | Michael Hanselmann |
|
485 | 4a8b186a | Michael Hanselmann | @return: Master hostname
|
486 | 4a8b186a | Michael Hanselmann |
|
487 | 4a8b186a | Michael Hanselmann | """
|
488 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.master_node |
489 | 4a8b186a | Michael Hanselmann | |
490 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
491 | 4a8b186a | Michael Hanselmann | def GetMasterIP(self): |
492 | 4a8b186a | Michael Hanselmann | """Get the IP of the master node for this cluster.
|
493 | 4a8b186a | Michael Hanselmann |
|
494 | 4a8b186a | Michael Hanselmann | @return: Master IP
|
495 | 4a8b186a | Michael Hanselmann |
|
496 | 4a8b186a | Michael Hanselmann | """
|
497 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.master_ip |
498 | 4a8b186a | Michael Hanselmann | |
499 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
500 | 4a8b186a | Michael Hanselmann | def GetMasterNetdev(self): |
501 | 4a8b186a | Michael Hanselmann | """Get the master network device for this cluster.
|
502 | 4a8b186a | Michael Hanselmann |
|
503 | 4a8b186a | Michael Hanselmann | """
|
504 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.master_netdev |
505 | 4a8b186a | Michael Hanselmann | |
506 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
507 | 4a8b186a | Michael Hanselmann | def GetFileStorageDir(self): |
508 | 4a8b186a | Michael Hanselmann | """Get the file storage dir for this cluster.
|
509 | 4a8b186a | Michael Hanselmann |
|
510 | 4a8b186a | Michael Hanselmann | """
|
511 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.file_storage_dir |
512 | 4a8b186a | Michael Hanselmann | |
513 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
514 | 4a8b186a | Michael Hanselmann | def GetHypervisorType(self): |
515 | 4a8b186a | Michael Hanselmann | """Get the hypervisor type for this cluster.
|
516 | 4a8b186a | Michael Hanselmann |
|
517 | 4a8b186a | Michael Hanselmann | """
|
518 | 64272529 | Iustin Pop | return self._config_data.cluster.default_hypervisor |
519 | 4a8b186a | Michael Hanselmann | |
520 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
521 | a8083063 | Iustin Pop | def GetHostKey(self): |
522 | a8083063 | Iustin Pop | """Return the rsa hostkey from the config.
|
523 | a8083063 | Iustin Pop |
|
524 | a8083063 | Iustin Pop | Args: None
|
525 | a8083063 | Iustin Pop |
|
526 | a8083063 | Iustin Pop | Returns: rsa hostkey
|
527 | a8083063 | Iustin Pop | """
|
528 | a8083063 | Iustin Pop | return self._config_data.cluster.rsahostkeypub |
529 | a8083063 | Iustin Pop | |
530 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
531 | a8083063 | Iustin Pop | def AddInstance(self, instance): |
532 | a8083063 | Iustin Pop | """Add an instance to the config.
|
533 | a8083063 | Iustin Pop |
|
534 | a8083063 | Iustin Pop | This should be used after creating a new instance.
|
535 | a8083063 | Iustin Pop |
|
536 | a8083063 | Iustin Pop | Args:
|
537 | a8083063 | Iustin Pop | instance: the instance object
|
538 | a8083063 | Iustin Pop | """
|
539 | a8083063 | Iustin Pop | if not isinstance(instance, objects.Instance): |
540 | a8083063 | Iustin Pop | raise errors.ProgrammerError("Invalid type passed to AddInstance") |
541 | a8083063 | Iustin Pop | |
542 | e00fb268 | Iustin Pop | if instance.disk_template != constants.DT_DISKLESS:
|
543 | e00fb268 | Iustin Pop | all_lvs = instance.MapLVsByNode() |
544 | 74a48621 | Iustin Pop | logging.info("Instance '%s' DISK_LAYOUT: %s", instance.name, all_lvs)
|
545 | 923b1523 | Iustin Pop | |
546 | b989e85d | Iustin Pop | instance.serial_no = 1
|
547 | a8083063 | Iustin Pop | self._config_data.instances[instance.name] = instance
|
548 | a8083063 | Iustin Pop | self._WriteConfig()
|
549 | a8083063 | Iustin Pop | |
550 | 6a408fb2 | Iustin Pop | def _SetInstanceStatus(self, instance_name, status): |
551 | 6a408fb2 | Iustin Pop | """Set the instance's status to a given value.
|
552 | a8083063 | Iustin Pop |
|
553 | a8083063 | Iustin Pop | """
|
554 | 6a408fb2 | Iustin Pop | if status not in ("up", "down"): |
555 | 6a408fb2 | Iustin Pop | raise errors.ProgrammerError("Invalid status '%s' passed to" |
556 | 6a408fb2 | Iustin Pop | " ConfigWriter._SetInstanceStatus()" %
|
557 | 6a408fb2 | Iustin Pop | status) |
558 | a8083063 | Iustin Pop | |
559 | a8083063 | Iustin Pop | if instance_name not in self._config_data.instances: |
560 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % |
561 | 3ecf6786 | Iustin Pop | instance_name) |
562 | a8083063 | Iustin Pop | instance = self._config_data.instances[instance_name]
|
563 | 455a3445 | Iustin Pop | if instance.status != status:
|
564 | 455a3445 | Iustin Pop | instance.status = status |
565 | b989e85d | Iustin Pop | instance.serial_no += 1
|
566 | 455a3445 | Iustin Pop | self._WriteConfig()
|
567 | a8083063 | Iustin Pop | |
568 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
569 | 6a408fb2 | Iustin Pop | def MarkInstanceUp(self, instance_name): |
570 | 6a408fb2 | Iustin Pop | """Mark the instance status to up in the config.
|
571 | 6a408fb2 | Iustin Pop |
|
572 | 6a408fb2 | Iustin Pop | """
|
573 | 6a408fb2 | Iustin Pop | self._SetInstanceStatus(instance_name, "up") |
574 | 6a408fb2 | Iustin Pop | |
575 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
576 | a8083063 | Iustin Pop | def RemoveInstance(self, instance_name): |
577 | a8083063 | Iustin Pop | """Remove the instance from the configuration.
|
578 | a8083063 | Iustin Pop |
|
579 | a8083063 | Iustin Pop | """
|
580 | a8083063 | Iustin Pop | if instance_name not in self._config_data.instances: |
581 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % instance_name) |
582 | a8083063 | Iustin Pop | del self._config_data.instances[instance_name] |
583 | a8083063 | Iustin Pop | self._WriteConfig()
|
584 | a8083063 | Iustin Pop | |
585 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
586 | fc95f88f | Iustin Pop | def RenameInstance(self, old_name, new_name): |
587 | fc95f88f | Iustin Pop | """Rename an instance.
|
588 | fc95f88f | Iustin Pop |
|
589 | fc95f88f | Iustin Pop | This needs to be done in ConfigWriter and not by RemoveInstance
|
590 | fc95f88f | Iustin Pop | combined with AddInstance as only we can guarantee an atomic
|
591 | fc95f88f | Iustin Pop | rename.
|
592 | fc95f88f | Iustin Pop |
|
593 | fc95f88f | Iustin Pop | """
|
594 | fc95f88f | Iustin Pop | if old_name not in self._config_data.instances: |
595 | fc95f88f | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % old_name) |
596 | fc95f88f | Iustin Pop | inst = self._config_data.instances[old_name]
|
597 | fc95f88f | Iustin Pop | del self._config_data.instances[old_name] |
598 | fc95f88f | Iustin Pop | inst.name = new_name |
599 | b23c4333 | Manuel Franceschini | |
600 | b23c4333 | Manuel Franceschini | for disk in inst.disks: |
601 | b23c4333 | Manuel Franceschini | if disk.dev_type == constants.LD_FILE:
|
602 | b23c4333 | Manuel Franceschini | # rename the file paths in logical and physical id
|
603 | b23c4333 | Manuel Franceschini | file_storage_dir = os.path.dirname(os.path.dirname(disk.logical_id[1]))
|
604 | b23c4333 | Manuel Franceschini | disk.physical_id = disk.logical_id = (disk.logical_id[0],
|
605 | b23c4333 | Manuel Franceschini | os.path.join(file_storage_dir, |
606 | b23c4333 | Manuel Franceschini | inst.name, |
607 | b23c4333 | Manuel Franceschini | disk.iv_name)) |
608 | b23c4333 | Manuel Franceschini | |
609 | fc95f88f | Iustin Pop | self._config_data.instances[inst.name] = inst
|
610 | fc95f88f | Iustin Pop | self._WriteConfig()
|
611 | fc95f88f | Iustin Pop | |
612 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
613 | a8083063 | Iustin Pop | def MarkInstanceDown(self, instance_name): |
614 | a8083063 | Iustin Pop | """Mark the status of an instance to down in the configuration.
|
615 | a8083063 | Iustin Pop |
|
616 | a8083063 | Iustin Pop | """
|
617 | 6a408fb2 | Iustin Pop | self._SetInstanceStatus(instance_name, "down") |
618 | a8083063 | Iustin Pop | |
619 | 94bbfece | Iustin Pop | def _UnlockedGetInstanceList(self): |
620 | 94bbfece | Iustin Pop | """Get the list of instances.
|
621 | 94bbfece | Iustin Pop |
|
622 | 94bbfece | Iustin Pop | This function is for internal use, when the config lock is already held.
|
623 | 94bbfece | Iustin Pop |
|
624 | 94bbfece | Iustin Pop | """
|
625 | 94bbfece | Iustin Pop | return self._config_data.instances.keys() |
626 | 94bbfece | Iustin Pop | |
627 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
628 | a8083063 | Iustin Pop | def GetInstanceList(self): |
629 | a8083063 | Iustin Pop | """Get the list of instances.
|
630 | a8083063 | Iustin Pop |
|
631 | a8083063 | Iustin Pop | Returns:
|
632 | a8083063 | Iustin Pop | array of instances, ex. ['instance2.example.com','instance1.example.com']
|
633 | a8083063 | Iustin Pop | these contains all the instances, also the ones in Admin_down state
|
634 | a8083063 | Iustin Pop |
|
635 | a8083063 | Iustin Pop | """
|
636 | 94bbfece | Iustin Pop | return self._UnlockedGetInstanceList() |
637 | a8083063 | Iustin Pop | |
638 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
639 | a8083063 | Iustin Pop | def ExpandInstanceName(self, short_name): |
640 | a8083063 | Iustin Pop | """Attempt to expand an incomplete instance name.
|
641 | a8083063 | Iustin Pop |
|
642 | a8083063 | Iustin Pop | """
|
643 | a8083063 | Iustin Pop | return utils.MatchNameComponent(short_name,
|
644 | a8083063 | Iustin Pop | self._config_data.instances.keys())
|
645 | a8083063 | Iustin Pop | |
646 | 94bbfece | Iustin Pop | def _UnlockedGetInstanceInfo(self, instance_name): |
647 | 94bbfece | Iustin Pop | """Returns informations about an instance.
|
648 | 94bbfece | Iustin Pop |
|
649 | 94bbfece | Iustin Pop | This function is for internal use, when the config lock is already held.
|
650 | 94bbfece | Iustin Pop |
|
651 | 94bbfece | Iustin Pop | """
|
652 | 94bbfece | Iustin Pop | if instance_name not in self._config_data.instances: |
653 | 94bbfece | Iustin Pop | return None |
654 | 94bbfece | Iustin Pop | |
655 | 94bbfece | Iustin Pop | return self._config_data.instances[instance_name] |
656 | 94bbfece | Iustin Pop | |
657 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
658 | a8083063 | Iustin Pop | def GetInstanceInfo(self, instance_name): |
659 | a8083063 | Iustin Pop | """Returns informations about an instance.
|
660 | a8083063 | Iustin Pop |
|
661 | a8083063 | Iustin Pop | It takes the information from the configuration file. Other informations of
|
662 | a8083063 | Iustin Pop | an instance are taken from the live systems.
|
663 | a8083063 | Iustin Pop |
|
664 | a8083063 | Iustin Pop | Args:
|
665 | a8083063 | Iustin Pop | instance: name of the instance, ex instance1.example.com
|
666 | a8083063 | Iustin Pop |
|
667 | a8083063 | Iustin Pop | Returns:
|
668 | a8083063 | Iustin Pop | the instance object
|
669 | a8083063 | Iustin Pop |
|
670 | a8083063 | Iustin Pop | """
|
671 | 94bbfece | Iustin Pop | return self._UnlockedGetInstanceInfo(instance_name) |
672 | a8083063 | Iustin Pop | |
673 | 0b2de758 | Iustin Pop | @locking.ssynchronized(_config_lock, shared=1) |
674 | 0b2de758 | Iustin Pop | def GetAllInstancesInfo(self): |
675 | 0b2de758 | Iustin Pop | """Get the configuration of all instances.
|
676 | 0b2de758 | Iustin Pop |
|
677 | 0b2de758 | Iustin Pop | @rtype: dict
|
678 | 0b2de758 | Iustin Pop | @returns: dict of (instance, instance_info), where instance_info is what
|
679 | 0b2de758 | Iustin Pop | would GetInstanceInfo return for the node
|
680 | 0b2de758 | Iustin Pop |
|
681 | 0b2de758 | Iustin Pop | """
|
682 | 64d3bd52 | Guido Trotter | my_dict = dict([(instance, self._UnlockedGetInstanceInfo(instance)) |
683 | 64d3bd52 | Guido Trotter | for instance in self._UnlockedGetInstanceList()]) |
684 | 0b2de758 | Iustin Pop | return my_dict
|
685 | 0b2de758 | Iustin Pop | |
686 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
687 | a8083063 | Iustin Pop | def AddNode(self, node): |
688 | a8083063 | Iustin Pop | """Add a node to the configuration.
|
689 | a8083063 | Iustin Pop |
|
690 | a8083063 | Iustin Pop | Args:
|
691 | a8083063 | Iustin Pop | node: an object.Node instance
|
692 | a8083063 | Iustin Pop |
|
693 | a8083063 | Iustin Pop | """
|
694 | d8470559 | Michael Hanselmann | logging.info("Adding node %s to configuration" % node.name)
|
695 | d8470559 | Michael Hanselmann | |
696 | b989e85d | Iustin Pop | node.serial_no = 1
|
697 | a8083063 | Iustin Pop | self._config_data.nodes[node.name] = node
|
698 | b9f72b4e | Iustin Pop | self._config_data.cluster.serial_no += 1 |
699 | a8083063 | Iustin Pop | self._WriteConfig()
|
700 | a8083063 | Iustin Pop | |
701 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
702 | a8083063 | Iustin Pop | def RemoveNode(self, node_name): |
703 | a8083063 | Iustin Pop | """Remove a node from the configuration.
|
704 | a8083063 | Iustin Pop |
|
705 | a8083063 | Iustin Pop | """
|
706 | d8470559 | Michael Hanselmann | logging.info("Removing node %s from configuration" % node_name)
|
707 | d8470559 | Michael Hanselmann | |
708 | a8083063 | Iustin Pop | if node_name not in self._config_data.nodes: |
709 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown node '%s'" % node_name) |
710 | a8083063 | Iustin Pop | |
711 | a8083063 | Iustin Pop | del self._config_data.nodes[node_name] |
712 | b9f72b4e | Iustin Pop | self._config_data.cluster.serial_no += 1 |
713 | a8083063 | Iustin Pop | self._WriteConfig()
|
714 | a8083063 | Iustin Pop | |
715 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
716 | a8083063 | Iustin Pop | def ExpandNodeName(self, short_name): |
717 | a8083063 | Iustin Pop | """Attempt to expand an incomplete instance name.
|
718 | a8083063 | Iustin Pop |
|
719 | a8083063 | Iustin Pop | """
|
720 | a8083063 | Iustin Pop | return utils.MatchNameComponent(short_name,
|
721 | a8083063 | Iustin Pop | self._config_data.nodes.keys())
|
722 | a8083063 | Iustin Pop | |
723 | f78ede4e | Guido Trotter | def _UnlockedGetNodeInfo(self, node_name): |
724 | a8083063 | Iustin Pop | """Get the configuration of a node, as stored in the config.
|
725 | a8083063 | Iustin Pop |
|
726 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
|
727 | f78ede4e | Guido Trotter |
|
728 | a8083063 | Iustin Pop | Args: node: nodename (tuple) of the node
|
729 | a8083063 | Iustin Pop |
|
730 | a8083063 | Iustin Pop | Returns: the node object
|
731 | a8083063 | Iustin Pop |
|
732 | a8083063 | Iustin Pop | """
|
733 | a8083063 | Iustin Pop | if node_name not in self._config_data.nodes: |
734 | a8083063 | Iustin Pop | return None |
735 | a8083063 | Iustin Pop | |
736 | a8083063 | Iustin Pop | return self._config_data.nodes[node_name] |
737 | a8083063 | Iustin Pop | |
738 | f78ede4e | Guido Trotter | |
739 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
740 | f78ede4e | Guido Trotter | def GetNodeInfo(self, node_name): |
741 | f78ede4e | Guido Trotter | """Get the configuration of a node, as stored in the config.
|
742 | f78ede4e | Guido Trotter |
|
743 | f78ede4e | Guido Trotter | Args: node: nodename (tuple) of the node
|
744 | f78ede4e | Guido Trotter |
|
745 | f78ede4e | Guido Trotter | Returns: the node object
|
746 | f78ede4e | Guido Trotter |
|
747 | f78ede4e | Guido Trotter | """
|
748 | f78ede4e | Guido Trotter | return self._UnlockedGetNodeInfo(node_name) |
749 | f78ede4e | Guido Trotter | |
750 | f78ede4e | Guido Trotter | def _UnlockedGetNodeList(self): |
751 | a8083063 | Iustin Pop | """Return the list of nodes which are in the configuration.
|
752 | a8083063 | Iustin Pop |
|
753 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
|
754 | f78ede4e | Guido Trotter |
|
755 | a8083063 | Iustin Pop | """
|
756 | a8083063 | Iustin Pop | return self._config_data.nodes.keys() |
757 | a8083063 | Iustin Pop | |
758 | f78ede4e | Guido Trotter | |
759 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
760 | f78ede4e | Guido Trotter | def GetNodeList(self): |
761 | f78ede4e | Guido Trotter | """Return the list of nodes which are in the configuration.
|
762 | f78ede4e | Guido Trotter |
|
763 | f78ede4e | Guido Trotter | """
|
764 | f78ede4e | Guido Trotter | return self._UnlockedGetNodeList() |
765 | f78ede4e | Guido Trotter | |
766 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
767 | d65e5776 | Iustin Pop | def GetAllNodesInfo(self): |
768 | d65e5776 | Iustin Pop | """Get the configuration of all nodes.
|
769 | d65e5776 | Iustin Pop |
|
770 | d65e5776 | Iustin Pop | @rtype: dict
|
771 | ec0292f1 | Iustin Pop | @return: dict of (node, node_info), where node_info is what
|
772 | d65e5776 | Iustin Pop | would GetNodeInfo return for the node
|
773 | d65e5776 | Iustin Pop |
|
774 | d65e5776 | Iustin Pop | """
|
775 | d65e5776 | Iustin Pop | my_dict = dict([(node, self._UnlockedGetNodeInfo(node)) |
776 | d65e5776 | Iustin Pop | for node in self._UnlockedGetNodeList()]) |
777 | d65e5776 | Iustin Pop | return my_dict
|
778 | d65e5776 | Iustin Pop | |
779 | ec0292f1 | Iustin Pop | def _UnlockedGetMasterCandidateStats(self): |
780 | ec0292f1 | Iustin Pop | """Get the number of current and maximum desired and possible candidates.
|
781 | ec0292f1 | Iustin Pop |
|
782 | ec0292f1 | Iustin Pop | @rtype: tuple
|
783 | ec0292f1 | Iustin Pop | @return: tuple of (current, desired and possible)
|
784 | ec0292f1 | Iustin Pop |
|
785 | ec0292f1 | Iustin Pop | """
|
786 | ec0292f1 | Iustin Pop | mc_now = mc_max = 0
|
787 | ec0292f1 | Iustin Pop | for node in self._config_data.nodes.itervalues(): |
788 | ec0292f1 | Iustin Pop | if not node.offline: |
789 | ec0292f1 | Iustin Pop | mc_max += 1
|
790 | ec0292f1 | Iustin Pop | if node.master_candidate:
|
791 | ec0292f1 | Iustin Pop | mc_now += 1
|
792 | ec0292f1 | Iustin Pop | mc_max = min(mc_max, self._config_data.cluster.candidate_pool_size) |
793 | ec0292f1 | Iustin Pop | return (mc_now, mc_max)
|
794 | ec0292f1 | Iustin Pop | |
795 | ec0292f1 | Iustin Pop | @locking.ssynchronized(_config_lock, shared=1) |
796 | ec0292f1 | Iustin Pop | def GetMasterCandidateStats(self): |
797 | ec0292f1 | Iustin Pop | """Get the number of current and maximum possible candidates.
|
798 | ec0292f1 | Iustin Pop |
|
799 | ec0292f1 | Iustin Pop | This is just a wrapper over L{_UnlockedGetMasterCandidateStats}.
|
800 | ec0292f1 | Iustin Pop |
|
801 | ec0292f1 | Iustin Pop | @rtype: tuple
|
802 | ec0292f1 | Iustin Pop | @return: tuple of (current, max)
|
803 | ec0292f1 | Iustin Pop |
|
804 | ec0292f1 | Iustin Pop | """
|
805 | ec0292f1 | Iustin Pop | return self._UnlockedGetMasterCandidateStats() |
806 | ec0292f1 | Iustin Pop | |
807 | ec0292f1 | Iustin Pop | @locking.ssynchronized(_config_lock)
|
808 | ec0292f1 | Iustin Pop | def MaintainCandidatePool(self): |
809 | ec0292f1 | Iustin Pop | """Try to grow the candidate pool to the desired size.
|
810 | ec0292f1 | Iustin Pop |
|
811 | ec0292f1 | Iustin Pop | @rtype: list
|
812 | ec0292f1 | Iustin Pop | @return: list with the adjusted node names
|
813 | ec0292f1 | Iustin Pop |
|
814 | ec0292f1 | Iustin Pop | """
|
815 | ec0292f1 | Iustin Pop | mc_now, mc_max = self._UnlockedGetMasterCandidateStats()
|
816 | ec0292f1 | Iustin Pop | mod_list = [] |
817 | ec0292f1 | Iustin Pop | if mc_now < mc_max:
|
818 | ec0292f1 | Iustin Pop | node_list = self._config_data.nodes.keys()
|
819 | ec0292f1 | Iustin Pop | random.shuffle(node_list) |
820 | ec0292f1 | Iustin Pop | for name in node_list: |
821 | ec0292f1 | Iustin Pop | if mc_now >= mc_max:
|
822 | ec0292f1 | Iustin Pop | break
|
823 | ec0292f1 | Iustin Pop | node = self._config_data.nodes[name]
|
824 | ec0292f1 | Iustin Pop | if node.master_candidate or node.offline: |
825 | ec0292f1 | Iustin Pop | continue
|
826 | ec0292f1 | Iustin Pop | mod_list.append(node.name) |
827 | ec0292f1 | Iustin Pop | node.master_candidate = True
|
828 | ec0292f1 | Iustin Pop | node.serial_no += 1
|
829 | ec0292f1 | Iustin Pop | mc_now += 1
|
830 | ec0292f1 | Iustin Pop | if mc_now != mc_max:
|
831 | ec0292f1 | Iustin Pop | # this should not happen
|
832 | ec0292f1 | Iustin Pop | logging.warning("Warning: MaintainCandidatePool didn't manage to"
|
833 | ec0292f1 | Iustin Pop | " fill the candidate pool (%d/%d)", mc_now, mc_max)
|
834 | ec0292f1 | Iustin Pop | if mod_list:
|
835 | ec0292f1 | Iustin Pop | self._config_data.cluster.serial_no += 1 |
836 | ec0292f1 | Iustin Pop | self._WriteConfig()
|
837 | ec0292f1 | Iustin Pop | |
838 | ec0292f1 | Iustin Pop | return mod_list
|
839 | ec0292f1 | Iustin Pop | |
840 | a8083063 | Iustin Pop | def _BumpSerialNo(self): |
841 | a8083063 | Iustin Pop | """Bump up the serial number of the config.
|
842 | a8083063 | Iustin Pop |
|
843 | a8083063 | Iustin Pop | """
|
844 | 9d38c6e1 | Iustin Pop | self._config_data.serial_no += 1 |
845 | a8083063 | Iustin Pop | |
846 | a8083063 | Iustin Pop | def _OpenConfig(self): |
847 | a8083063 | Iustin Pop | """Read the config data from disk.
|
848 | a8083063 | Iustin Pop |
|
849 | a8083063 | Iustin Pop | In case we already have configuration data and the config file has
|
850 | a8083063 | Iustin Pop | the same mtime as when we read it, we skip the parsing of the
|
851 | a8083063 | Iustin Pop | file, since de-serialisation could be slow.
|
852 | a8083063 | Iustin Pop |
|
853 | a8083063 | Iustin Pop | """
|
854 | a8083063 | Iustin Pop | f = open(self._cfg_file, 'r') |
855 | a8083063 | Iustin Pop | try:
|
856 | a8083063 | Iustin Pop | try:
|
857 | 8d14b30d | Iustin Pop | data = objects.ConfigData.FromDict(serializer.Load(f.read())) |
858 | a8083063 | Iustin Pop | except Exception, err: |
859 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError(err)
|
860 | a8083063 | Iustin Pop | finally:
|
861 | a8083063 | Iustin Pop | f.close() |
862 | 5b263ed7 | Michael Hanselmann | |
863 | 5b263ed7 | Michael Hanselmann | # Make sure the configuration has the right version
|
864 | 5b263ed7 | Michael Hanselmann | _ValidateConfig(data) |
865 | 5b263ed7 | Michael Hanselmann | |
866 | a8083063 | Iustin Pop | if (not hasattr(data, 'cluster') or |
867 | 243cdbcc | Michael Hanselmann | not hasattr(data.cluster, 'rsahostkeypub')): |
868 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Incomplete configuration" |
869 | 243cdbcc | Michael Hanselmann | " (missing cluster.rsahostkeypub)")
|
870 | a8083063 | Iustin Pop | self._config_data = data
|
871 | 0779e3aa | Iustin Pop | # init the last serial as -1 so that the next write will cause
|
872 | 0779e3aa | Iustin Pop | # ssconf update
|
873 | 0779e3aa | Iustin Pop | self._last_cluster_serial = -1 |
874 | a8083063 | Iustin Pop | |
875 | a8083063 | Iustin Pop | def _DistributeConfig(self): |
876 | a8083063 | Iustin Pop | """Distribute the configuration to the other nodes.
|
877 | a8083063 | Iustin Pop |
|
878 | a8083063 | Iustin Pop | Currently, this only copies the configuration file. In the future,
|
879 | a8083063 | Iustin Pop | it could be used to encapsulate the 2/3-phase update mechanism.
|
880 | a8083063 | Iustin Pop |
|
881 | a8083063 | Iustin Pop | """
|
882 | a8083063 | Iustin Pop | if self._offline: |
883 | a8083063 | Iustin Pop | return True |
884 | a8083063 | Iustin Pop | bad = False
|
885 | a8083063 | Iustin Pop | |
886 | 6a5b8b4b | Iustin Pop | node_list = [] |
887 | 6a5b8b4b | Iustin Pop | addr_list = [] |
888 | 6a5b8b4b | Iustin Pop | myhostname = self._my_hostname
|
889 | 6b294c53 | Iustin Pop | # we can skip checking whether _UnlockedGetNodeInfo returns None
|
890 | 6b294c53 | Iustin Pop | # since the node list comes from _UnlocketGetNodeList, and we are
|
891 | 6b294c53 | Iustin Pop | # called with the lock held, so no modifications should take place
|
892 | 6b294c53 | Iustin Pop | # in between
|
893 | 6a5b8b4b | Iustin Pop | for node_name in self._UnlockedGetNodeList(): |
894 | 6a5b8b4b | Iustin Pop | if node_name == myhostname:
|
895 | 6a5b8b4b | Iustin Pop | continue
|
896 | 6a5b8b4b | Iustin Pop | node_info = self._UnlockedGetNodeInfo(node_name)
|
897 | 6a5b8b4b | Iustin Pop | if not node_info.master_candidate: |
898 | 6a5b8b4b | Iustin Pop | continue
|
899 | 6a5b8b4b | Iustin Pop | node_list.append(node_info.name) |
900 | 6a5b8b4b | Iustin Pop | addr_list.append(node_info.primary_ip) |
901 | 6b294c53 | Iustin Pop | |
902 | 6a5b8b4b | Iustin Pop | result = rpc.RpcRunner.call_upload_file(node_list, self._cfg_file,
|
903 | 6a5b8b4b | Iustin Pop | address_list=addr_list) |
904 | 6a5b8b4b | Iustin Pop | for node in node_list: |
905 | a8083063 | Iustin Pop | if not result[node]: |
906 | 74a48621 | Iustin Pop | logging.error("copy of file %s to node %s failed",
|
907 | 74a48621 | Iustin Pop | self._cfg_file, node)
|
908 | a8083063 | Iustin Pop | bad = True
|
909 | a8083063 | Iustin Pop | return not bad |
910 | a8083063 | Iustin Pop | |
911 | a8083063 | Iustin Pop | def _WriteConfig(self, destination=None): |
912 | a8083063 | Iustin Pop | """Write the configuration data to persistent storage.
|
913 | a8083063 | Iustin Pop |
|
914 | a8083063 | Iustin Pop | """
|
915 | a8083063 | Iustin Pop | if destination is None: |
916 | a8083063 | Iustin Pop | destination = self._cfg_file
|
917 | a8083063 | Iustin Pop | self._BumpSerialNo()
|
918 | 8d14b30d | Iustin Pop | txt = serializer.Dump(self._config_data.ToDict())
|
919 | a8083063 | Iustin Pop | dir_name, file_name = os.path.split(destination) |
920 | a8083063 | Iustin Pop | fd, name = tempfile.mkstemp('.newconfig', file_name, dir_name)
|
921 | a8083063 | Iustin Pop | f = os.fdopen(fd, 'w')
|
922 | a8083063 | Iustin Pop | try:
|
923 | 8d14b30d | Iustin Pop | f.write(txt) |
924 | a8083063 | Iustin Pop | os.fsync(f.fileno()) |
925 | a8083063 | Iustin Pop | finally:
|
926 | a8083063 | Iustin Pop | f.close() |
927 | a8083063 | Iustin Pop | # we don't need to do os.close(fd) as f.close() did it
|
928 | a8083063 | Iustin Pop | os.rename(name, destination) |
929 | 14e15659 | Iustin Pop | self.write_count += 1 |
930 | 3d3a04bc | Iustin Pop | |
931 | f56618e0 | Iustin Pop | # and redistribute the config file to master candidates
|
932 | a8083063 | Iustin Pop | self._DistributeConfig()
|
933 | a8083063 | Iustin Pop | |
934 | 54d1a06e | Michael Hanselmann | # Write ssconf files on all nodes (including locally)
|
935 | 0779e3aa | Iustin Pop | if self._last_cluster_serial < self._config_data.cluster.serial_no: |
936 | d9a855f1 | Michael Hanselmann | if not self._offline: |
937 | 03d1dba2 | Michael Hanselmann | rpc.RpcRunner.call_write_ssconf_files(self._UnlockedGetNodeList(),
|
938 | 03d1dba2 | Michael Hanselmann | self._UnlockedGetSsconfValues())
|
939 | 0779e3aa | Iustin Pop | self._last_cluster_serial = self._config_data.cluster.serial_no |
940 | 54d1a06e | Michael Hanselmann | |
941 | 03d1dba2 | Michael Hanselmann | def _UnlockedGetSsconfValues(self): |
942 | 054596f0 | Iustin Pop | """Return the values needed by ssconf.
|
943 | 054596f0 | Iustin Pop |
|
944 | 054596f0 | Iustin Pop | @rtype: dict
|
945 | 054596f0 | Iustin Pop | @return: a dictionary with keys the ssconf names and values their
|
946 | 054596f0 | Iustin Pop | associated value
|
947 | 054596f0 | Iustin Pop |
|
948 | 054596f0 | Iustin Pop | """
|
949 | a3316e4a | Iustin Pop | fn = "\n".join
|
950 | a3316e4a | Iustin Pop | node_names = utils.NiceSort(self._UnlockedGetNodeList())
|
951 | a3316e4a | Iustin Pop | node_info = [self._UnlockedGetNodeInfo(name) for name in node_names] |
952 | a3316e4a | Iustin Pop | |
953 | a3316e4a | Iustin Pop | off_data = fn(node.name for node in node_info if node.offline) |
954 | a3316e4a | Iustin Pop | mc_data = fn(node.name for node in node_info if node.master_candidate) |
955 | a3316e4a | Iustin Pop | node_data = fn(node_names) |
956 | f56618e0 | Iustin Pop | |
957 | 054596f0 | Iustin Pop | cluster = self._config_data.cluster
|
958 | 03d1dba2 | Michael Hanselmann | return {
|
959 | 054596f0 | Iustin Pop | constants.SS_CLUSTER_NAME: cluster.cluster_name, |
960 | 054596f0 | Iustin Pop | constants.SS_FILE_STORAGE_DIR: cluster.file_storage_dir, |
961 | a3316e4a | Iustin Pop | constants.SS_MASTER_CANDIDATES: mc_data, |
962 | 054596f0 | Iustin Pop | constants.SS_MASTER_IP: cluster.master_ip, |
963 | 054596f0 | Iustin Pop | constants.SS_MASTER_NETDEV: cluster.master_netdev, |
964 | 054596f0 | Iustin Pop | constants.SS_MASTER_NODE: cluster.master_node, |
965 | a3316e4a | Iustin Pop | constants.SS_NODE_LIST: node_data, |
966 | a3316e4a | Iustin Pop | constants.SS_OFFLINE_NODES: off_data, |
967 | 03d1dba2 | Michael Hanselmann | } |
968 | 03d1dba2 | Michael Hanselmann | |
969 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
970 | f6bd6e98 | Michael Hanselmann | def InitConfig(self, version, cluster_config, master_node_config): |
971 | a8083063 | Iustin Pop | """Create the initial cluster configuration.
|
972 | a8083063 | Iustin Pop |
|
973 | a8083063 | Iustin Pop | It will contain the current node, which will also be the master
|
974 | b9eeeb02 | Michael Hanselmann | node, and no instances.
|
975 | a8083063 | Iustin Pop |
|
976 | f6bd6e98 | Michael Hanselmann | @type version: int
|
977 | f6bd6e98 | Michael Hanselmann | @param version: Configuration version
|
978 | b9eeeb02 | Michael Hanselmann | @type cluster_config: objects.Cluster
|
979 | b9eeeb02 | Michael Hanselmann | @param cluster_config: Cluster configuration
|
980 | b9eeeb02 | Michael Hanselmann | @type master_node_config: objects.Node
|
981 | b9eeeb02 | Michael Hanselmann | @param master_node_config: Master node configuration
|
982 | b9eeeb02 | Michael Hanselmann |
|
983 | b9eeeb02 | Michael Hanselmann | """
|
984 | b9eeeb02 | Michael Hanselmann | nodes = { |
985 | b9eeeb02 | Michael Hanselmann | master_node_config.name: master_node_config, |
986 | b9eeeb02 | Michael Hanselmann | } |
987 | b9eeeb02 | Michael Hanselmann | |
988 | f6bd6e98 | Michael Hanselmann | self._config_data = objects.ConfigData(version=version,
|
989 | f6bd6e98 | Michael Hanselmann | cluster=cluster_config, |
990 | b9eeeb02 | Michael Hanselmann | nodes=nodes, |
991 | a8083063 | Iustin Pop | instances={}, |
992 | 9d38c6e1 | Iustin Pop | serial_no=1)
|
993 | a8083063 | Iustin Pop | self._WriteConfig()
|
994 | a8083063 | Iustin Pop | |
995 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
996 | a8083063 | Iustin Pop | def GetVGName(self): |
997 | a8083063 | Iustin Pop | """Return the volume group name.
|
998 | a8083063 | Iustin Pop |
|
999 | a8083063 | Iustin Pop | """
|
1000 | a8083063 | Iustin Pop | return self._config_data.cluster.volume_group_name |
1001 | a8083063 | Iustin Pop | |
1002 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
1003 | 89ff8e15 | Manuel Franceschini | def SetVGName(self, vg_name): |
1004 | 89ff8e15 | Manuel Franceschini | """Set the volume group name.
|
1005 | 89ff8e15 | Manuel Franceschini |
|
1006 | 89ff8e15 | Manuel Franceschini | """
|
1007 | 2d4011cd | Manuel Franceschini | self._config_data.cluster.volume_group_name = vg_name
|
1008 | b9f72b4e | Iustin Pop | self._config_data.cluster.serial_no += 1 |
1009 | 89ff8e15 | Manuel Franceschini | self._WriteConfig()
|
1010 | 89ff8e15 | Manuel Franceschini | |
1011 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
1012 | a8083063 | Iustin Pop | def GetDefBridge(self): |
1013 | a8083063 | Iustin Pop | """Return the default bridge.
|
1014 | a8083063 | Iustin Pop |
|
1015 | a8083063 | Iustin Pop | """
|
1016 | a8083063 | Iustin Pop | return self._config_data.cluster.default_bridge |
1017 | a8083063 | Iustin Pop | |
1018 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
1019 | a8083063 | Iustin Pop | def GetMACPrefix(self): |
1020 | a8083063 | Iustin Pop | """Return the mac prefix.
|
1021 | a8083063 | Iustin Pop |
|
1022 | a8083063 | Iustin Pop | """
|
1023 | a8083063 | Iustin Pop | return self._config_data.cluster.mac_prefix |
1024 | 62779dd0 | Iustin Pop | |
1025 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
1026 | 62779dd0 | Iustin Pop | def GetClusterInfo(self): |
1027 | 62779dd0 | Iustin Pop | """Returns informations about the cluster
|
1028 | 62779dd0 | Iustin Pop |
|
1029 | 62779dd0 | Iustin Pop | Returns:
|
1030 | 62779dd0 | Iustin Pop | the cluster object
|
1031 | 62779dd0 | Iustin Pop |
|
1032 | 62779dd0 | Iustin Pop | """
|
1033 | 62779dd0 | Iustin Pop | return self._config_data.cluster |
1034 | e00fb268 | Iustin Pop | |
1035 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
1036 | e00fb268 | Iustin Pop | def Update(self, target): |
1037 | e00fb268 | Iustin Pop | """Notify function to be called after updates.
|
1038 | e00fb268 | Iustin Pop |
|
1039 | e00fb268 | Iustin Pop | This function must be called when an object (as returned by
|
1040 | e00fb268 | Iustin Pop | GetInstanceInfo, GetNodeInfo, GetCluster) has been updated and the
|
1041 | e00fb268 | Iustin Pop | caller wants the modifications saved to the backing store. Note
|
1042 | e00fb268 | Iustin Pop | that all modified objects will be saved, but the target argument
|
1043 | e00fb268 | Iustin Pop | is the one the caller wants to ensure that it's saved.
|
1044 | e00fb268 | Iustin Pop |
|
1045 | e00fb268 | Iustin Pop | """
|
1046 | e00fb268 | Iustin Pop | if self._config_data is None: |
1047 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Configuration file not read," |
1048 | 3ecf6786 | Iustin Pop | " cannot save.")
|
1049 | f34901f8 | Iustin Pop | update_serial = False
|
1050 | e00fb268 | Iustin Pop | if isinstance(target, objects.Cluster): |
1051 | e00fb268 | Iustin Pop | test = target == self._config_data.cluster
|
1052 | e00fb268 | Iustin Pop | elif isinstance(target, objects.Node): |
1053 | e00fb268 | Iustin Pop | test = target in self._config_data.nodes.values() |
1054 | f34901f8 | Iustin Pop | update_serial = True
|
1055 | e00fb268 | Iustin Pop | elif isinstance(target, objects.Instance): |
1056 | e00fb268 | Iustin Pop | test = target in self._config_data.instances.values() |
1057 | e00fb268 | Iustin Pop | else:
|
1058 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Invalid object type (%s) passed to" |
1059 | 3ecf6786 | Iustin Pop | " ConfigWriter.Update" % type(target)) |
1060 | e00fb268 | Iustin Pop | if not test: |
1061 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Configuration updated since object" |
1062 | 3ecf6786 | Iustin Pop | " has been read or unknown object")
|
1063 | f34901f8 | Iustin Pop | target.serial_no += 1
|
1064 | f34901f8 | Iustin Pop | |
1065 | cff4c037 | Iustin Pop | if update_serial:
|
1066 | f34901f8 | Iustin Pop | # for node updates, we need to increase the cluster serial too
|
1067 | f34901f8 | Iustin Pop | self._config_data.cluster.serial_no += 1 |
1068 | b989e85d | Iustin Pop | |
1069 | e00fb268 | Iustin Pop | self._WriteConfig() |