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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 | a8083063 | Iustin Pop | """Stub verify function.
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218 | a8083063 | Iustin Pop | """
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219 | a8083063 | Iustin Pop | result = [] |
220 | a8083063 | Iustin Pop | seen_macs = [] |
221 | 48ce9fd9 | Iustin Pop | ports = {} |
222 | a8083063 | Iustin Pop | data = self._config_data
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223 | a8083063 | Iustin Pop | for instance_name in data.instances: |
224 | a8083063 | Iustin Pop | instance = data.instances[instance_name] |
225 | a8083063 | Iustin Pop | if instance.primary_node not in data.nodes: |
226 | 8522ceeb | Iustin Pop | result.append("instance '%s' has invalid primary node '%s'" %
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227 | a8083063 | Iustin Pop | (instance_name, instance.primary_node)) |
228 | a8083063 | Iustin Pop | for snode in instance.secondary_nodes: |
229 | a8083063 | Iustin Pop | if snode not in data.nodes: |
230 | 8522ceeb | Iustin Pop | result.append("instance '%s' has invalid secondary node '%s'" %
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231 | a8083063 | Iustin Pop | (instance_name, snode)) |
232 | a8083063 | Iustin Pop | for idx, nic in enumerate(instance.nics): |
233 | a8083063 | Iustin Pop | if nic.mac in seen_macs: |
234 | 8522ceeb | Iustin Pop | result.append("instance '%s' has NIC %d mac %s duplicate" %
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235 | a8083063 | Iustin Pop | (instance_name, idx, nic.mac)) |
236 | a8083063 | Iustin Pop | else:
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237 | a8083063 | Iustin Pop | seen_macs.append(nic.mac) |
238 | 48ce9fd9 | Iustin Pop | |
239 | 48ce9fd9 | Iustin Pop | # gather the drbd ports for duplicate checks
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240 | 48ce9fd9 | Iustin Pop | for dsk in instance.disks: |
241 | 48ce9fd9 | Iustin Pop | if dsk.dev_type in constants.LDS_DRBD: |
242 | 48ce9fd9 | Iustin Pop | tcp_port = dsk.logical_id[2]
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243 | 48ce9fd9 | Iustin Pop | if tcp_port not in ports: |
244 | 48ce9fd9 | Iustin Pop | ports[tcp_port] = [] |
245 | 48ce9fd9 | Iustin Pop | ports[tcp_port].append((instance.name, "drbd disk %s" % dsk.iv_name))
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246 | 48ce9fd9 | Iustin Pop | # gather network port reservation
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247 | 48ce9fd9 | Iustin Pop | net_port = getattr(instance, "network_port", None) |
248 | 48ce9fd9 | Iustin Pop | if net_port is not None: |
249 | 48ce9fd9 | Iustin Pop | if net_port not in ports: |
250 | 48ce9fd9 | Iustin Pop | ports[net_port] = [] |
251 | 48ce9fd9 | Iustin Pop | ports[net_port].append((instance.name, "network port"))
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252 | 48ce9fd9 | Iustin Pop | |
253 | 48ce9fd9 | Iustin Pop | # cluster-wide pool of free ports
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254 | 48ce9fd9 | Iustin Pop | for free_port in self._config_data.cluster.tcpudp_port_pool: |
255 | 48ce9fd9 | Iustin Pop | if free_port not in ports: |
256 | 48ce9fd9 | Iustin Pop | ports[free_port] = [] |
257 | 48ce9fd9 | Iustin Pop | ports[free_port].append(("cluster", "port marked as free")) |
258 | 48ce9fd9 | Iustin Pop | |
259 | 48ce9fd9 | Iustin Pop | # compute tcp/udp duplicate ports
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260 | 48ce9fd9 | Iustin Pop | keys = ports.keys() |
261 | 48ce9fd9 | Iustin Pop | keys.sort() |
262 | 48ce9fd9 | Iustin Pop | for pnum in keys: |
263 | 48ce9fd9 | Iustin Pop | pdata = ports[pnum] |
264 | 48ce9fd9 | Iustin Pop | if len(pdata) > 1: |
265 | 48ce9fd9 | Iustin Pop | txt = ", ".join(["%s/%s" % val for val in pdata]) |
266 | 48ce9fd9 | Iustin Pop | result.append("tcp/udp port %s has duplicates: %s" % (pnum, txt))
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267 | 48ce9fd9 | Iustin Pop | |
268 | 48ce9fd9 | Iustin Pop | # highest used tcp port check
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269 | 48ce9fd9 | Iustin Pop | if keys:
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270 | 48ce9fd9 | Iustin Pop | if keys[-1] > self._config_data.cluster.highest_used_port: |
271 | 48ce9fd9 | Iustin Pop | result.append("Highest used port mismatch, saved %s, computed %s" %
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272 | 48ce9fd9 | Iustin Pop | (self._config_data.cluster.highest_used_port,
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273 | 48ce9fd9 | Iustin Pop | keys[-1]))
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274 | 48ce9fd9 | Iustin Pop | |
275 | a8083063 | Iustin Pop | return result
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276 | a8083063 | Iustin Pop | |
277 | f78ede4e | Guido Trotter | def _UnlockedSetDiskID(self, disk, node_name): |
278 | a8083063 | Iustin Pop | """Convert the unique ID to the ID needed on the target nodes.
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279 | a8083063 | Iustin Pop |
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280 | a8083063 | Iustin Pop | This is used only for drbd, which needs ip/port configuration.
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281 | a8083063 | Iustin Pop |
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282 | a8083063 | Iustin Pop | The routine descends down and updates its children also, because
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283 | a8083063 | Iustin Pop | this helps when the only the top device is passed to the remote
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284 | a8083063 | Iustin Pop | node.
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285 | a8083063 | Iustin Pop |
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286 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
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287 | f78ede4e | Guido Trotter |
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288 | a8083063 | Iustin Pop | """
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289 | a8083063 | Iustin Pop | if disk.children:
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290 | a8083063 | Iustin Pop | for child in disk.children: |
291 | f78ede4e | Guido Trotter | self._UnlockedSetDiskID(child, node_name)
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292 | a8083063 | Iustin Pop | |
293 | a8083063 | Iustin Pop | if disk.logical_id is None and disk.physical_id is not None: |
294 | a8083063 | Iustin Pop | return
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295 | ffa1c0dc | Iustin Pop | if disk.dev_type == constants.LD_DRBD8:
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296 | f9518d38 | Iustin Pop | pnode, snode, port, pminor, sminor, secret = disk.logical_id |
297 | a8083063 | Iustin Pop | if node_name not in (pnode, snode): |
298 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("DRBD device not knowing node %s" % |
299 | 3ecf6786 | Iustin Pop | node_name) |
300 | f78ede4e | Guido Trotter | pnode_info = self._UnlockedGetNodeInfo(pnode)
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301 | f78ede4e | Guido Trotter | snode_info = self._UnlockedGetNodeInfo(snode)
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302 | a8083063 | Iustin Pop | if pnode_info is None or snode_info is None: |
303 | a8083063 | Iustin Pop | raise errors.ConfigurationError("Can't find primary or secondary node" |
304 | a8083063 | Iustin Pop | " for %s" % str(disk)) |
305 | ffa1c0dc | Iustin Pop | p_data = (pnode_info.secondary_ip, port) |
306 | ffa1c0dc | Iustin Pop | s_data = (snode_info.secondary_ip, port) |
307 | a8083063 | Iustin Pop | if pnode == node_name:
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308 | f9518d38 | Iustin Pop | disk.physical_id = p_data + s_data + (pminor, secret) |
309 | a8083063 | Iustin Pop | else: # it must be secondary, we tested above |
310 | f9518d38 | Iustin Pop | disk.physical_id = s_data + p_data + (sminor, secret) |
311 | a8083063 | Iustin Pop | else:
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312 | a8083063 | Iustin Pop | disk.physical_id = disk.logical_id |
313 | a8083063 | Iustin Pop | return
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314 | a8083063 | Iustin Pop | |
315 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
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316 | f78ede4e | Guido Trotter | def SetDiskID(self, disk, node_name): |
317 | f78ede4e | Guido Trotter | """Convert the unique ID to the ID needed on the target nodes.
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318 | f78ede4e | Guido Trotter |
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319 | f78ede4e | Guido Trotter | This is used only for drbd, which needs ip/port configuration.
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320 | f78ede4e | Guido Trotter |
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321 | f78ede4e | Guido Trotter | The routine descends down and updates its children also, because
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322 | f78ede4e | Guido Trotter | this helps when the only the top device is passed to the remote
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323 | f78ede4e | Guido Trotter | node.
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324 | f78ede4e | Guido Trotter |
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325 | f78ede4e | Guido Trotter | """
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326 | f78ede4e | Guido Trotter | return self._UnlockedSetDiskID(disk, node_name) |
327 | f78ede4e | Guido Trotter | |
328 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
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329 | b2fddf63 | Iustin Pop | def AddTcpUdpPort(self, port): |
330 | b2fddf63 | Iustin Pop | """Adds a new port to the available port pool.
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331 | b2fddf63 | Iustin Pop |
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332 | b2fddf63 | Iustin Pop | """
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333 | 264bb3c5 | Michael Hanselmann | if not isinstance(port, int): |
334 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Invalid type passed for port") |
335 | 264bb3c5 | Michael Hanselmann | |
336 | b2fddf63 | Iustin Pop | self._config_data.cluster.tcpudp_port_pool.add(port)
|
337 | 264bb3c5 | Michael Hanselmann | self._WriteConfig()
|
338 | 264bb3c5 | Michael Hanselmann | |
339 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
340 | b2fddf63 | Iustin Pop | def GetPortList(self): |
341 | 264bb3c5 | Michael Hanselmann | """Returns a copy of the current port list.
|
342 | 264bb3c5 | Michael Hanselmann |
|
343 | 264bb3c5 | Michael Hanselmann | """
|
344 | b2fddf63 | Iustin Pop | return self._config_data.cluster.tcpudp_port_pool.copy() |
345 | 264bb3c5 | Michael Hanselmann | |
346 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
347 | a8083063 | Iustin Pop | def AllocatePort(self): |
348 | a8083063 | Iustin Pop | """Allocate a port.
|
349 | a8083063 | Iustin Pop |
|
350 | b2fddf63 | Iustin Pop | The port will be taken from the available port pool or from the
|
351 | b2fddf63 | Iustin Pop | default port range (and in this case we increase
|
352 | b2fddf63 | Iustin Pop | highest_used_port).
|
353 | a8083063 | Iustin Pop |
|
354 | a8083063 | Iustin Pop | """
|
355 | 264bb3c5 | Michael Hanselmann | # If there are TCP/IP ports configured, we use them first.
|
356 | b2fddf63 | Iustin Pop | if self._config_data.cluster.tcpudp_port_pool: |
357 | b2fddf63 | Iustin Pop | port = self._config_data.cluster.tcpudp_port_pool.pop()
|
358 | 264bb3c5 | Michael Hanselmann | else:
|
359 | 264bb3c5 | Michael Hanselmann | port = self._config_data.cluster.highest_used_port + 1 |
360 | 264bb3c5 | Michael Hanselmann | if port >= constants.LAST_DRBD_PORT:
|
361 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("The highest used port is greater" |
362 | 3ecf6786 | Iustin Pop | " than %s. Aborting." %
|
363 | 3ecf6786 | Iustin Pop | constants.LAST_DRBD_PORT) |
364 | 264bb3c5 | Michael Hanselmann | self._config_data.cluster.highest_used_port = port
|
365 | a8083063 | Iustin Pop | |
366 | a8083063 | Iustin Pop | self._WriteConfig()
|
367 | a8083063 | Iustin Pop | return port
|
368 | a8083063 | Iustin Pop | |
369 | a81c53c9 | Iustin Pop | def _ComputeDRBDMap(self, instance): |
370 | a81c53c9 | Iustin Pop | """Compute the used DRBD minor/nodes.
|
371 | a81c53c9 | Iustin Pop |
|
372 | a81c53c9 | Iustin Pop | Return: dictionary of node_name: dict of minor: instance_name. The
|
373 | a81c53c9 | Iustin Pop | returned dict will have all the nodes in it (even if with an empty
|
374 | a81c53c9 | Iustin Pop | list).
|
375 | a81c53c9 | Iustin Pop |
|
376 | a81c53c9 | Iustin Pop | """
|
377 | a81c53c9 | Iustin Pop | def _AppendUsedPorts(instance_name, disk, used): |
378 | f9518d38 | Iustin Pop | if disk.dev_type == constants.LD_DRBD8 and len(disk.logical_id) >= 5: |
379 | f9518d38 | Iustin Pop | nodeA, nodeB, dummy, minorA, minorB = disk.logical_id[:5]
|
380 | a81c53c9 | Iustin Pop | for node, port in ((nodeA, minorA), (nodeB, minorB)): |
381 | a81c53c9 | Iustin Pop | assert node in used, "Instance node not found in node list" |
382 | a81c53c9 | Iustin Pop | if port in used[node]: |
383 | a81c53c9 | Iustin Pop | raise errors.ProgrammerError("DRBD minor already used:" |
384 | a81c53c9 | Iustin Pop | " %s/%s, %s/%s" %
|
385 | a81c53c9 | Iustin Pop | (node, port, instance_name, |
386 | a81c53c9 | Iustin Pop | used[node][port])) |
387 | a81c53c9 | Iustin Pop | |
388 | a81c53c9 | Iustin Pop | used[node][port] = instance_name |
389 | a81c53c9 | Iustin Pop | if disk.children:
|
390 | a81c53c9 | Iustin Pop | for child in disk.children: |
391 | a81c53c9 | Iustin Pop | _AppendUsedPorts(instance_name, child, used) |
392 | a81c53c9 | Iustin Pop | |
393 | a81c53c9 | Iustin Pop | my_dict = dict((node, {}) for node in self._config_data.nodes) |
394 | a81c53c9 | Iustin Pop | for (node, minor), instance in self._temporary_drbds.iteritems(): |
395 | a81c53c9 | Iustin Pop | my_dict[node][minor] = instance |
396 | a81c53c9 | Iustin Pop | for instance in self._config_data.instances.itervalues(): |
397 | a81c53c9 | Iustin Pop | for disk in instance.disks: |
398 | a81c53c9 | Iustin Pop | _AppendUsedPorts(instance.name, disk, my_dict) |
399 | a81c53c9 | Iustin Pop | return my_dict
|
400 | a81c53c9 | Iustin Pop | |
401 | a81c53c9 | Iustin Pop | @locking.ssynchronized(_config_lock)
|
402 | a81c53c9 | Iustin Pop | def AllocateDRBDMinor(self, nodes, instance): |
403 | a81c53c9 | Iustin Pop | """Allocate a drbd minor.
|
404 | a81c53c9 | Iustin Pop |
|
405 | a81c53c9 | Iustin Pop | The free minor will be automatically computed from the existing
|
406 | a81c53c9 | Iustin Pop | devices. A node can be given multiple times in order to allocate
|
407 | a81c53c9 | Iustin Pop | multiple minors. The result is the list of minors, in the same
|
408 | a81c53c9 | Iustin Pop | order as the passed nodes.
|
409 | a81c53c9 | Iustin Pop |
|
410 | a81c53c9 | Iustin Pop | """
|
411 | a81c53c9 | Iustin Pop | d_map = self._ComputeDRBDMap(instance)
|
412 | a81c53c9 | Iustin Pop | result = [] |
413 | a81c53c9 | Iustin Pop | for nname in nodes: |
414 | a81c53c9 | Iustin Pop | ndata = d_map[nname] |
415 | a81c53c9 | Iustin Pop | if not ndata: |
416 | a81c53c9 | Iustin Pop | # no minors used, we can start at 0
|
417 | a81c53c9 | Iustin Pop | result.append(0)
|
418 | a81c53c9 | Iustin Pop | ndata[0] = instance
|
419 | d48663e4 | Iustin Pop | self._temporary_drbds[(nname, 0)] = instance |
420 | a81c53c9 | Iustin Pop | continue
|
421 | a81c53c9 | Iustin Pop | keys = ndata.keys() |
422 | a81c53c9 | Iustin Pop | keys.sort() |
423 | a81c53c9 | Iustin Pop | ffree = utils.FirstFree(keys) |
424 | a81c53c9 | Iustin Pop | if ffree is None: |
425 | a81c53c9 | Iustin Pop | # return the next minor
|
426 | a81c53c9 | Iustin Pop | # TODO: implement high-limit check
|
427 | a81c53c9 | Iustin Pop | minor = keys[-1] + 1 |
428 | a81c53c9 | Iustin Pop | else:
|
429 | a81c53c9 | Iustin Pop | minor = ffree |
430 | a81c53c9 | Iustin Pop | result.append(minor) |
431 | a81c53c9 | Iustin Pop | ndata[minor] = instance |
432 | a81c53c9 | Iustin Pop | assert (nname, minor) not in self._temporary_drbds, \ |
433 | a81c53c9 | Iustin Pop | "Attempt to reuse reserved DRBD minor"
|
434 | a81c53c9 | Iustin Pop | self._temporary_drbds[(nname, minor)] = instance
|
435 | a81c53c9 | Iustin Pop | logging.debug("Request to allocate drbd minors, input: %s, returning %s",
|
436 | a81c53c9 | Iustin Pop | nodes, result) |
437 | a81c53c9 | Iustin Pop | return result
|
438 | a81c53c9 | Iustin Pop | |
439 | a81c53c9 | Iustin Pop | @locking.ssynchronized(_config_lock)
|
440 | a81c53c9 | Iustin Pop | def ReleaseDRBDMinors(self, instance): |
441 | a81c53c9 | Iustin Pop | """Release temporary drbd minors allocated for a given instance.
|
442 | a81c53c9 | Iustin Pop |
|
443 | a81c53c9 | Iustin Pop | This should be called on both the error paths and on the success
|
444 | a81c53c9 | Iustin Pop | paths (after the instance has been added or updated).
|
445 | a81c53c9 | Iustin Pop |
|
446 | a81c53c9 | Iustin Pop | @type instance: string
|
447 | a81c53c9 | Iustin Pop | @param instance: the instance for which temporary minors should be
|
448 | a81c53c9 | Iustin Pop | released
|
449 | a81c53c9 | Iustin Pop |
|
450 | a81c53c9 | Iustin Pop | """
|
451 | a81c53c9 | Iustin Pop | for key, name in self._temporary_drbds.items(): |
452 | a81c53c9 | Iustin Pop | if name == instance:
|
453 | a81c53c9 | Iustin Pop | del self._temporary_drbds[key] |
454 | a81c53c9 | Iustin Pop | |
455 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
456 | 4a8b186a | Michael Hanselmann | def GetConfigVersion(self): |
457 | 4a8b186a | Michael Hanselmann | """Get the configuration version.
|
458 | 4a8b186a | Michael Hanselmann |
|
459 | 4a8b186a | Michael Hanselmann | @return: Config version
|
460 | 4a8b186a | Michael Hanselmann |
|
461 | 4a8b186a | Michael Hanselmann | """
|
462 | 4a8b186a | Michael Hanselmann | return self._config_data.version |
463 | 4a8b186a | Michael Hanselmann | |
464 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
465 | 4a8b186a | Michael Hanselmann | def GetClusterName(self): |
466 | 4a8b186a | Michael Hanselmann | """Get cluster name.
|
467 | 4a8b186a | Michael Hanselmann |
|
468 | 4a8b186a | Michael Hanselmann | @return: Cluster name
|
469 | 4a8b186a | Michael Hanselmann |
|
470 | 4a8b186a | Michael Hanselmann | """
|
471 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.cluster_name |
472 | 4a8b186a | Michael Hanselmann | |
473 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
474 | 4a8b186a | Michael Hanselmann | def GetMasterNode(self): |
475 | 4a8b186a | Michael Hanselmann | """Get the hostname of the master node for this cluster.
|
476 | 4a8b186a | Michael Hanselmann |
|
477 | 4a8b186a | Michael Hanselmann | @return: Master hostname
|
478 | 4a8b186a | Michael Hanselmann |
|
479 | 4a8b186a | Michael Hanselmann | """
|
480 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.master_node |
481 | 4a8b186a | Michael Hanselmann | |
482 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
483 | 4a8b186a | Michael Hanselmann | def GetMasterIP(self): |
484 | 4a8b186a | Michael Hanselmann | """Get the IP of the master node for this cluster.
|
485 | 4a8b186a | Michael Hanselmann |
|
486 | 4a8b186a | Michael Hanselmann | @return: Master IP
|
487 | 4a8b186a | Michael Hanselmann |
|
488 | 4a8b186a | Michael Hanselmann | """
|
489 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.master_ip |
490 | 4a8b186a | Michael Hanselmann | |
491 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
492 | 4a8b186a | Michael Hanselmann | def GetMasterNetdev(self): |
493 | 4a8b186a | Michael Hanselmann | """Get the master network device for this cluster.
|
494 | 4a8b186a | Michael Hanselmann |
|
495 | 4a8b186a | Michael Hanselmann | """
|
496 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.master_netdev |
497 | 4a8b186a | Michael Hanselmann | |
498 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
499 | 4a8b186a | Michael Hanselmann | def GetFileStorageDir(self): |
500 | 4a8b186a | Michael Hanselmann | """Get the file storage dir for this cluster.
|
501 | 4a8b186a | Michael Hanselmann |
|
502 | 4a8b186a | Michael Hanselmann | """
|
503 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.file_storage_dir |
504 | 4a8b186a | Michael Hanselmann | |
505 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
506 | 4a8b186a | Michael Hanselmann | def GetHypervisorType(self): |
507 | 4a8b186a | Michael Hanselmann | """Get the hypervisor type for this cluster.
|
508 | 4a8b186a | Michael Hanselmann |
|
509 | 4a8b186a | Michael Hanselmann | """
|
510 | 64272529 | Iustin Pop | return self._config_data.cluster.default_hypervisor |
511 | 4a8b186a | Michael Hanselmann | |
512 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
513 | a8083063 | Iustin Pop | def GetHostKey(self): |
514 | a8083063 | Iustin Pop | """Return the rsa hostkey from the config.
|
515 | a8083063 | Iustin Pop |
|
516 | a8083063 | Iustin Pop | Args: None
|
517 | a8083063 | Iustin Pop |
|
518 | a8083063 | Iustin Pop | Returns: rsa hostkey
|
519 | a8083063 | Iustin Pop | """
|
520 | a8083063 | Iustin Pop | return self._config_data.cluster.rsahostkeypub |
521 | a8083063 | Iustin Pop | |
522 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
523 | a8083063 | Iustin Pop | def AddInstance(self, instance): |
524 | a8083063 | Iustin Pop | """Add an instance to the config.
|
525 | a8083063 | Iustin Pop |
|
526 | a8083063 | Iustin Pop | This should be used after creating a new instance.
|
527 | a8083063 | Iustin Pop |
|
528 | a8083063 | Iustin Pop | Args:
|
529 | a8083063 | Iustin Pop | instance: the instance object
|
530 | a8083063 | Iustin Pop | """
|
531 | a8083063 | Iustin Pop | if not isinstance(instance, objects.Instance): |
532 | a8083063 | Iustin Pop | raise errors.ProgrammerError("Invalid type passed to AddInstance") |
533 | a8083063 | Iustin Pop | |
534 | e00fb268 | Iustin Pop | if instance.disk_template != constants.DT_DISKLESS:
|
535 | e00fb268 | Iustin Pop | all_lvs = instance.MapLVsByNode() |
536 | 74a48621 | Iustin Pop | logging.info("Instance '%s' DISK_LAYOUT: %s", instance.name, all_lvs)
|
537 | 923b1523 | Iustin Pop | |
538 | b989e85d | Iustin Pop | instance.serial_no = 1
|
539 | a8083063 | Iustin Pop | self._config_data.instances[instance.name] = instance
|
540 | a8083063 | Iustin Pop | self._WriteConfig()
|
541 | a8083063 | Iustin Pop | |
542 | 6a408fb2 | Iustin Pop | def _SetInstanceStatus(self, instance_name, status): |
543 | 6a408fb2 | Iustin Pop | """Set the instance's status to a given value.
|
544 | a8083063 | Iustin Pop |
|
545 | a8083063 | Iustin Pop | """
|
546 | 6a408fb2 | Iustin Pop | if status not in ("up", "down"): |
547 | 6a408fb2 | Iustin Pop | raise errors.ProgrammerError("Invalid status '%s' passed to" |
548 | 6a408fb2 | Iustin Pop | " ConfigWriter._SetInstanceStatus()" %
|
549 | 6a408fb2 | Iustin Pop | status) |
550 | a8083063 | Iustin Pop | |
551 | a8083063 | Iustin Pop | if instance_name not in self._config_data.instances: |
552 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % |
553 | 3ecf6786 | Iustin Pop | instance_name) |
554 | a8083063 | Iustin Pop | instance = self._config_data.instances[instance_name]
|
555 | 455a3445 | Iustin Pop | if instance.status != status:
|
556 | 455a3445 | Iustin Pop | instance.status = status |
557 | b989e85d | Iustin Pop | instance.serial_no += 1
|
558 | 455a3445 | Iustin Pop | self._WriteConfig()
|
559 | a8083063 | Iustin Pop | |
560 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
561 | 6a408fb2 | Iustin Pop | def MarkInstanceUp(self, instance_name): |
562 | 6a408fb2 | Iustin Pop | """Mark the instance status to up in the config.
|
563 | 6a408fb2 | Iustin Pop |
|
564 | 6a408fb2 | Iustin Pop | """
|
565 | 6a408fb2 | Iustin Pop | self._SetInstanceStatus(instance_name, "up") |
566 | 6a408fb2 | Iustin Pop | |
567 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
568 | a8083063 | Iustin Pop | def RemoveInstance(self, instance_name): |
569 | a8083063 | Iustin Pop | """Remove the instance from the configuration.
|
570 | a8083063 | Iustin Pop |
|
571 | a8083063 | Iustin Pop | """
|
572 | a8083063 | Iustin Pop | if instance_name not in self._config_data.instances: |
573 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % instance_name) |
574 | a8083063 | Iustin Pop | del self._config_data.instances[instance_name] |
575 | a8083063 | Iustin Pop | self._WriteConfig()
|
576 | a8083063 | Iustin Pop | |
577 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
578 | fc95f88f | Iustin Pop | def RenameInstance(self, old_name, new_name): |
579 | fc95f88f | Iustin Pop | """Rename an instance.
|
580 | fc95f88f | Iustin Pop |
|
581 | fc95f88f | Iustin Pop | This needs to be done in ConfigWriter and not by RemoveInstance
|
582 | fc95f88f | Iustin Pop | combined with AddInstance as only we can guarantee an atomic
|
583 | fc95f88f | Iustin Pop | rename.
|
584 | fc95f88f | Iustin Pop |
|
585 | fc95f88f | Iustin Pop | """
|
586 | fc95f88f | Iustin Pop | if old_name not in self._config_data.instances: |
587 | fc95f88f | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % old_name) |
588 | fc95f88f | Iustin Pop | inst = self._config_data.instances[old_name]
|
589 | fc95f88f | Iustin Pop | del self._config_data.instances[old_name] |
590 | fc95f88f | Iustin Pop | inst.name = new_name |
591 | b23c4333 | Manuel Franceschini | |
592 | b23c4333 | Manuel Franceschini | for disk in inst.disks: |
593 | b23c4333 | Manuel Franceschini | if disk.dev_type == constants.LD_FILE:
|
594 | b23c4333 | Manuel Franceschini | # rename the file paths in logical and physical id
|
595 | b23c4333 | Manuel Franceschini | file_storage_dir = os.path.dirname(os.path.dirname(disk.logical_id[1]))
|
596 | b23c4333 | Manuel Franceschini | disk.physical_id = disk.logical_id = (disk.logical_id[0],
|
597 | b23c4333 | Manuel Franceschini | os.path.join(file_storage_dir, |
598 | b23c4333 | Manuel Franceschini | inst.name, |
599 | b23c4333 | Manuel Franceschini | disk.iv_name)) |
600 | b23c4333 | Manuel Franceschini | |
601 | fc95f88f | Iustin Pop | self._config_data.instances[inst.name] = inst
|
602 | fc95f88f | Iustin Pop | self._WriteConfig()
|
603 | fc95f88f | Iustin Pop | |
604 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
605 | a8083063 | Iustin Pop | def MarkInstanceDown(self, instance_name): |
606 | a8083063 | Iustin Pop | """Mark the status of an instance to down in the configuration.
|
607 | a8083063 | Iustin Pop |
|
608 | a8083063 | Iustin Pop | """
|
609 | 6a408fb2 | Iustin Pop | self._SetInstanceStatus(instance_name, "down") |
610 | a8083063 | Iustin Pop | |
611 | 94bbfece | Iustin Pop | def _UnlockedGetInstanceList(self): |
612 | 94bbfece | Iustin Pop | """Get the list of instances.
|
613 | 94bbfece | Iustin Pop |
|
614 | 94bbfece | Iustin Pop | This function is for internal use, when the config lock is already held.
|
615 | 94bbfece | Iustin Pop |
|
616 | 94bbfece | Iustin Pop | """
|
617 | 94bbfece | Iustin Pop | return self._config_data.instances.keys() |
618 | 94bbfece | Iustin Pop | |
619 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
620 | a8083063 | Iustin Pop | def GetInstanceList(self): |
621 | a8083063 | Iustin Pop | """Get the list of instances.
|
622 | a8083063 | Iustin Pop |
|
623 | a8083063 | Iustin Pop | Returns:
|
624 | a8083063 | Iustin Pop | array of instances, ex. ['instance2.example.com','instance1.example.com']
|
625 | a8083063 | Iustin Pop | these contains all the instances, also the ones in Admin_down state
|
626 | a8083063 | Iustin Pop |
|
627 | a8083063 | Iustin Pop | """
|
628 | 94bbfece | Iustin Pop | return self._UnlockedGetInstanceList() |
629 | a8083063 | Iustin Pop | |
630 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
631 | a8083063 | Iustin Pop | def ExpandInstanceName(self, short_name): |
632 | a8083063 | Iustin Pop | """Attempt to expand an incomplete instance name.
|
633 | a8083063 | Iustin Pop |
|
634 | a8083063 | Iustin Pop | """
|
635 | a8083063 | Iustin Pop | return utils.MatchNameComponent(short_name,
|
636 | a8083063 | Iustin Pop | self._config_data.instances.keys())
|
637 | a8083063 | Iustin Pop | |
638 | 94bbfece | Iustin Pop | def _UnlockedGetInstanceInfo(self, instance_name): |
639 | 94bbfece | Iustin Pop | """Returns informations about an instance.
|
640 | 94bbfece | Iustin Pop |
|
641 | 94bbfece | Iustin Pop | This function is for internal use, when the config lock is already held.
|
642 | 94bbfece | Iustin Pop |
|
643 | 94bbfece | Iustin Pop | """
|
644 | 94bbfece | Iustin Pop | if instance_name not in self._config_data.instances: |
645 | 94bbfece | Iustin Pop | return None |
646 | 94bbfece | Iustin Pop | |
647 | 94bbfece | Iustin Pop | return self._config_data.instances[instance_name] |
648 | 94bbfece | Iustin Pop | |
649 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
650 | a8083063 | Iustin Pop | def GetInstanceInfo(self, instance_name): |
651 | a8083063 | Iustin Pop | """Returns informations about an instance.
|
652 | a8083063 | Iustin Pop |
|
653 | a8083063 | Iustin Pop | It takes the information from the configuration file. Other informations of
|
654 | a8083063 | Iustin Pop | an instance are taken from the live systems.
|
655 | a8083063 | Iustin Pop |
|
656 | a8083063 | Iustin Pop | Args:
|
657 | a8083063 | Iustin Pop | instance: name of the instance, ex instance1.example.com
|
658 | a8083063 | Iustin Pop |
|
659 | a8083063 | Iustin Pop | Returns:
|
660 | a8083063 | Iustin Pop | the instance object
|
661 | a8083063 | Iustin Pop |
|
662 | a8083063 | Iustin Pop | """
|
663 | 94bbfece | Iustin Pop | return self._UnlockedGetInstanceInfo(instance_name) |
664 | a8083063 | Iustin Pop | |
665 | 0b2de758 | Iustin Pop | @locking.ssynchronized(_config_lock, shared=1) |
666 | 0b2de758 | Iustin Pop | def GetAllInstancesInfo(self): |
667 | 0b2de758 | Iustin Pop | """Get the configuration of all instances.
|
668 | 0b2de758 | Iustin Pop |
|
669 | 0b2de758 | Iustin Pop | @rtype: dict
|
670 | 0b2de758 | Iustin Pop | @returns: dict of (instance, instance_info), where instance_info is what
|
671 | 0b2de758 | Iustin Pop | would GetInstanceInfo return for the node
|
672 | 0b2de758 | Iustin Pop |
|
673 | 0b2de758 | Iustin Pop | """
|
674 | 64d3bd52 | Guido Trotter | my_dict = dict([(instance, self._UnlockedGetInstanceInfo(instance)) |
675 | 64d3bd52 | Guido Trotter | for instance in self._UnlockedGetInstanceList()]) |
676 | 0b2de758 | Iustin Pop | return my_dict
|
677 | 0b2de758 | Iustin Pop | |
678 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
679 | a8083063 | Iustin Pop | def AddNode(self, node): |
680 | a8083063 | Iustin Pop | """Add a node to the configuration.
|
681 | a8083063 | Iustin Pop |
|
682 | a8083063 | Iustin Pop | Args:
|
683 | a8083063 | Iustin Pop | node: an object.Node instance
|
684 | a8083063 | Iustin Pop |
|
685 | a8083063 | Iustin Pop | """
|
686 | d8470559 | Michael Hanselmann | logging.info("Adding node %s to configuration" % node.name)
|
687 | d8470559 | Michael Hanselmann | |
688 | b989e85d | Iustin Pop | node.serial_no = 1
|
689 | a8083063 | Iustin Pop | self._config_data.nodes[node.name] = node
|
690 | b9f72b4e | Iustin Pop | self._config_data.cluster.serial_no += 1 |
691 | a8083063 | Iustin Pop | self._WriteConfig()
|
692 | a8083063 | Iustin Pop | |
693 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
694 | a8083063 | Iustin Pop | def RemoveNode(self, node_name): |
695 | a8083063 | Iustin Pop | """Remove a node from the configuration.
|
696 | a8083063 | Iustin Pop |
|
697 | a8083063 | Iustin Pop | """
|
698 | d8470559 | Michael Hanselmann | logging.info("Removing node %s from configuration" % node_name)
|
699 | d8470559 | Michael Hanselmann | |
700 | a8083063 | Iustin Pop | if node_name not in self._config_data.nodes: |
701 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown node '%s'" % node_name) |
702 | a8083063 | Iustin Pop | |
703 | a8083063 | Iustin Pop | del self._config_data.nodes[node_name] |
704 | b9f72b4e | Iustin Pop | self._config_data.cluster.serial_no += 1 |
705 | a8083063 | Iustin Pop | self._WriteConfig()
|
706 | a8083063 | Iustin Pop | |
707 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
708 | a8083063 | Iustin Pop | def ExpandNodeName(self, short_name): |
709 | a8083063 | Iustin Pop | """Attempt to expand an incomplete instance name.
|
710 | a8083063 | Iustin Pop |
|
711 | a8083063 | Iustin Pop | """
|
712 | a8083063 | Iustin Pop | return utils.MatchNameComponent(short_name,
|
713 | a8083063 | Iustin Pop | self._config_data.nodes.keys())
|
714 | a8083063 | Iustin Pop | |
715 | f78ede4e | Guido Trotter | def _UnlockedGetNodeInfo(self, node_name): |
716 | a8083063 | Iustin Pop | """Get the configuration of a node, as stored in the config.
|
717 | a8083063 | Iustin Pop |
|
718 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
|
719 | f78ede4e | Guido Trotter |
|
720 | a8083063 | Iustin Pop | Args: node: nodename (tuple) of the node
|
721 | a8083063 | Iustin Pop |
|
722 | a8083063 | Iustin Pop | Returns: the node object
|
723 | a8083063 | Iustin Pop |
|
724 | a8083063 | Iustin Pop | """
|
725 | a8083063 | Iustin Pop | if node_name not in self._config_data.nodes: |
726 | a8083063 | Iustin Pop | return None |
727 | a8083063 | Iustin Pop | |
728 | a8083063 | Iustin Pop | return self._config_data.nodes[node_name] |
729 | a8083063 | Iustin Pop | |
730 | f78ede4e | Guido Trotter | |
731 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
732 | f78ede4e | Guido Trotter | def GetNodeInfo(self, node_name): |
733 | f78ede4e | Guido Trotter | """Get the configuration of a node, as stored in the config.
|
734 | f78ede4e | Guido Trotter |
|
735 | f78ede4e | Guido Trotter | Args: node: nodename (tuple) of the node
|
736 | f78ede4e | Guido Trotter |
|
737 | f78ede4e | Guido Trotter | Returns: the node object
|
738 | f78ede4e | Guido Trotter |
|
739 | f78ede4e | Guido Trotter | """
|
740 | f78ede4e | Guido Trotter | return self._UnlockedGetNodeInfo(node_name) |
741 | f78ede4e | Guido Trotter | |
742 | f78ede4e | Guido Trotter | def _UnlockedGetNodeList(self): |
743 | a8083063 | Iustin Pop | """Return the list of nodes which are in the configuration.
|
744 | a8083063 | Iustin Pop |
|
745 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
|
746 | f78ede4e | Guido Trotter |
|
747 | a8083063 | Iustin Pop | """
|
748 | a8083063 | Iustin Pop | return self._config_data.nodes.keys() |
749 | a8083063 | Iustin Pop | |
750 | f78ede4e | Guido Trotter | |
751 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
752 | f78ede4e | Guido Trotter | def GetNodeList(self): |
753 | f78ede4e | Guido Trotter | """Return the list of nodes which are in the configuration.
|
754 | f78ede4e | Guido Trotter |
|
755 | f78ede4e | Guido Trotter | """
|
756 | f78ede4e | Guido Trotter | return self._UnlockedGetNodeList() |
757 | f78ede4e | Guido Trotter | |
758 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
759 | d65e5776 | Iustin Pop | def GetAllNodesInfo(self): |
760 | d65e5776 | Iustin Pop | """Get the configuration of all nodes.
|
761 | d65e5776 | Iustin Pop |
|
762 | d65e5776 | Iustin Pop | @rtype: dict
|
763 | d65e5776 | Iustin Pop | @returns: dict of (node, node_info), where node_info is what
|
764 | d65e5776 | Iustin Pop | would GetNodeInfo return for the node
|
765 | d65e5776 | Iustin Pop |
|
766 | d65e5776 | Iustin Pop | """
|
767 | d65e5776 | Iustin Pop | my_dict = dict([(node, self._UnlockedGetNodeInfo(node)) |
768 | d65e5776 | Iustin Pop | for node in self._UnlockedGetNodeList()]) |
769 | d65e5776 | Iustin Pop | return my_dict
|
770 | d65e5776 | Iustin Pop | |
771 | a8083063 | Iustin Pop | def _BumpSerialNo(self): |
772 | a8083063 | Iustin Pop | """Bump up the serial number of the config.
|
773 | a8083063 | Iustin Pop |
|
774 | a8083063 | Iustin Pop | """
|
775 | 9d38c6e1 | Iustin Pop | self._config_data.serial_no += 1 |
776 | a8083063 | Iustin Pop | |
777 | a8083063 | Iustin Pop | def _OpenConfig(self): |
778 | a8083063 | Iustin Pop | """Read the config data from disk.
|
779 | a8083063 | Iustin Pop |
|
780 | a8083063 | Iustin Pop | In case we already have configuration data and the config file has
|
781 | a8083063 | Iustin Pop | the same mtime as when we read it, we skip the parsing of the
|
782 | a8083063 | Iustin Pop | file, since de-serialisation could be slow.
|
783 | a8083063 | Iustin Pop |
|
784 | a8083063 | Iustin Pop | """
|
785 | a8083063 | Iustin Pop | f = open(self._cfg_file, 'r') |
786 | a8083063 | Iustin Pop | try:
|
787 | a8083063 | Iustin Pop | try:
|
788 | 8d14b30d | Iustin Pop | data = objects.ConfigData.FromDict(serializer.Load(f.read())) |
789 | a8083063 | Iustin Pop | except Exception, err: |
790 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError(err)
|
791 | a8083063 | Iustin Pop | finally:
|
792 | a8083063 | Iustin Pop | f.close() |
793 | 5b263ed7 | Michael Hanselmann | |
794 | 5b263ed7 | Michael Hanselmann | # Make sure the configuration has the right version
|
795 | 5b263ed7 | Michael Hanselmann | _ValidateConfig(data) |
796 | 5b263ed7 | Michael Hanselmann | |
797 | a8083063 | Iustin Pop | if (not hasattr(data, 'cluster') or |
798 | 243cdbcc | Michael Hanselmann | not hasattr(data.cluster, 'rsahostkeypub')): |
799 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Incomplete configuration" |
800 | 243cdbcc | Michael Hanselmann | " (missing cluster.rsahostkeypub)")
|
801 | a8083063 | Iustin Pop | self._config_data = data
|
802 | 0779e3aa | Iustin Pop | # init the last serial as -1 so that the next write will cause
|
803 | 0779e3aa | Iustin Pop | # ssconf update
|
804 | 0779e3aa | Iustin Pop | self._last_cluster_serial = -1 |
805 | a8083063 | Iustin Pop | |
806 | a8083063 | Iustin Pop | def _DistributeConfig(self): |
807 | a8083063 | Iustin Pop | """Distribute the configuration to the other nodes.
|
808 | a8083063 | Iustin Pop |
|
809 | a8083063 | Iustin Pop | Currently, this only copies the configuration file. In the future,
|
810 | a8083063 | Iustin Pop | it could be used to encapsulate the 2/3-phase update mechanism.
|
811 | a8083063 | Iustin Pop |
|
812 | a8083063 | Iustin Pop | """
|
813 | a8083063 | Iustin Pop | if self._offline: |
814 | a8083063 | Iustin Pop | return True |
815 | a8083063 | Iustin Pop | bad = False
|
816 | f78ede4e | Guido Trotter | nodelist = self._UnlockedGetNodeList()
|
817 | 89e1fc26 | Iustin Pop | myhostname = self._my_hostname
|
818 | a8083063 | Iustin Pop | |
819 | 9ff994da | Guido Trotter | try:
|
820 | 9ff994da | Guido Trotter | nodelist.remove(myhostname) |
821 | 9ff994da | Guido Trotter | except ValueError: |
822 | 9ff994da | Guido Trotter | pass
|
823 | 6b294c53 | Iustin Pop | # we can skip checking whether _UnlockedGetNodeInfo returns None
|
824 | 6b294c53 | Iustin Pop | # since the node list comes from _UnlocketGetNodeList, and we are
|
825 | 6b294c53 | Iustin Pop | # called with the lock held, so no modifications should take place
|
826 | 6b294c53 | Iustin Pop | # in between
|
827 | 6b294c53 | Iustin Pop | address_list = [self._UnlockedGetNodeInfo(name).primary_ip
|
828 | 6b294c53 | Iustin Pop | for name in nodelist] |
829 | 6b294c53 | Iustin Pop | |
830 | 6b294c53 | Iustin Pop | result = rpc.RpcRunner.call_upload_file(nodelist, self._cfg_file,
|
831 | 6b294c53 | Iustin Pop | address_list=address_list) |
832 | 41362e70 | Guido Trotter | for node in nodelist: |
833 | a8083063 | Iustin Pop | if not result[node]: |
834 | 74a48621 | Iustin Pop | logging.error("copy of file %s to node %s failed",
|
835 | 74a48621 | Iustin Pop | self._cfg_file, node)
|
836 | a8083063 | Iustin Pop | bad = True
|
837 | a8083063 | Iustin Pop | return not bad |
838 | a8083063 | Iustin Pop | |
839 | a8083063 | Iustin Pop | def _WriteConfig(self, destination=None): |
840 | a8083063 | Iustin Pop | """Write the configuration data to persistent storage.
|
841 | a8083063 | Iustin Pop |
|
842 | a8083063 | Iustin Pop | """
|
843 | a8083063 | Iustin Pop | if destination is None: |
844 | a8083063 | Iustin Pop | destination = self._cfg_file
|
845 | a8083063 | Iustin Pop | self._BumpSerialNo()
|
846 | 8d14b30d | Iustin Pop | txt = serializer.Dump(self._config_data.ToDict())
|
847 | a8083063 | Iustin Pop | dir_name, file_name = os.path.split(destination) |
848 | a8083063 | Iustin Pop | fd, name = tempfile.mkstemp('.newconfig', file_name, dir_name)
|
849 | a8083063 | Iustin Pop | f = os.fdopen(fd, 'w')
|
850 | a8083063 | Iustin Pop | try:
|
851 | 8d14b30d | Iustin Pop | f.write(txt) |
852 | a8083063 | Iustin Pop | os.fsync(f.fileno()) |
853 | a8083063 | Iustin Pop | finally:
|
854 | a8083063 | Iustin Pop | f.close() |
855 | a8083063 | Iustin Pop | # we don't need to do os.close(fd) as f.close() did it
|
856 | a8083063 | Iustin Pop | os.rename(name, destination) |
857 | 14e15659 | Iustin Pop | self.write_count += 1 |
858 | 3d3a04bc | Iustin Pop | |
859 | fee9556c | Iustin Pop | # and redistribute the config file
|
860 | a8083063 | Iustin Pop | self._DistributeConfig()
|
861 | a8083063 | Iustin Pop | |
862 | 54d1a06e | Michael Hanselmann | # Write ssconf files on all nodes (including locally)
|
863 | 0779e3aa | Iustin Pop | if self._last_cluster_serial < self._config_data.cluster.serial_no: |
864 | d9a855f1 | Michael Hanselmann | if not self._offline: |
865 | 03d1dba2 | Michael Hanselmann | rpc.RpcRunner.call_write_ssconf_files(self._UnlockedGetNodeList(),
|
866 | 03d1dba2 | Michael Hanselmann | self._UnlockedGetSsconfValues())
|
867 | 0779e3aa | Iustin Pop | self._last_cluster_serial = self._config_data.cluster.serial_no |
868 | 54d1a06e | Michael Hanselmann | |
869 | 03d1dba2 | Michael Hanselmann | def _UnlockedGetSsconfValues(self): |
870 | 03d1dba2 | Michael Hanselmann | return {
|
871 | 03d1dba2 | Michael Hanselmann | "cluster_name": self._config_data.cluster.cluster_name, |
872 | 03d1dba2 | Michael Hanselmann | "master_ip": self._config_data.cluster.master_ip, |
873 | 03d1dba2 | Michael Hanselmann | "master_netdev": self._config_data.cluster.master_netdev, |
874 | 03d1dba2 | Michael Hanselmann | "master_node": self._config_data.cluster.master_node, |
875 | 03d1dba2 | Michael Hanselmann | } |
876 | 03d1dba2 | Michael Hanselmann | |
877 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
878 | f6bd6e98 | Michael Hanselmann | def InitConfig(self, version, cluster_config, master_node_config): |
879 | a8083063 | Iustin Pop | """Create the initial cluster configuration.
|
880 | a8083063 | Iustin Pop |
|
881 | a8083063 | Iustin Pop | It will contain the current node, which will also be the master
|
882 | b9eeeb02 | Michael Hanselmann | node, and no instances.
|
883 | a8083063 | Iustin Pop |
|
884 | f6bd6e98 | Michael Hanselmann | @type version: int
|
885 | f6bd6e98 | Michael Hanselmann | @param version: Configuration version
|
886 | b9eeeb02 | Michael Hanselmann | @type cluster_config: objects.Cluster
|
887 | b9eeeb02 | Michael Hanselmann | @param cluster_config: Cluster configuration
|
888 | b9eeeb02 | Michael Hanselmann | @type master_node_config: objects.Node
|
889 | b9eeeb02 | Michael Hanselmann | @param master_node_config: Master node configuration
|
890 | b9eeeb02 | Michael Hanselmann |
|
891 | b9eeeb02 | Michael Hanselmann | """
|
892 | b9eeeb02 | Michael Hanselmann | nodes = { |
893 | b9eeeb02 | Michael Hanselmann | master_node_config.name: master_node_config, |
894 | b9eeeb02 | Michael Hanselmann | } |
895 | b9eeeb02 | Michael Hanselmann | |
896 | f6bd6e98 | Michael Hanselmann | self._config_data = objects.ConfigData(version=version,
|
897 | f6bd6e98 | Michael Hanselmann | cluster=cluster_config, |
898 | b9eeeb02 | Michael Hanselmann | nodes=nodes, |
899 | a8083063 | Iustin Pop | instances={}, |
900 | 9d38c6e1 | Iustin Pop | serial_no=1)
|
901 | a8083063 | Iustin Pop | self._WriteConfig()
|
902 | a8083063 | Iustin Pop | |
903 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
904 | a8083063 | Iustin Pop | def GetVGName(self): |
905 | a8083063 | Iustin Pop | """Return the volume group name.
|
906 | a8083063 | Iustin Pop |
|
907 | a8083063 | Iustin Pop | """
|
908 | a8083063 | Iustin Pop | return self._config_data.cluster.volume_group_name |
909 | a8083063 | Iustin Pop | |
910 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
911 | 89ff8e15 | Manuel Franceschini | def SetVGName(self, vg_name): |
912 | 89ff8e15 | Manuel Franceschini | """Set the volume group name.
|
913 | 89ff8e15 | Manuel Franceschini |
|
914 | 89ff8e15 | Manuel Franceschini | """
|
915 | 2d4011cd | Manuel Franceschini | self._config_data.cluster.volume_group_name = vg_name
|
916 | b9f72b4e | Iustin Pop | self._config_data.cluster.serial_no += 1 |
917 | 89ff8e15 | Manuel Franceschini | self._WriteConfig()
|
918 | 89ff8e15 | Manuel Franceschini | |
919 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
920 | a8083063 | Iustin Pop | def GetDefBridge(self): |
921 | a8083063 | Iustin Pop | """Return the default bridge.
|
922 | a8083063 | Iustin Pop |
|
923 | a8083063 | Iustin Pop | """
|
924 | a8083063 | Iustin Pop | return self._config_data.cluster.default_bridge |
925 | a8083063 | Iustin Pop | |
926 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
927 | a8083063 | Iustin Pop | def GetMACPrefix(self): |
928 | a8083063 | Iustin Pop | """Return the mac prefix.
|
929 | a8083063 | Iustin Pop |
|
930 | a8083063 | Iustin Pop | """
|
931 | a8083063 | Iustin Pop | return self._config_data.cluster.mac_prefix |
932 | 62779dd0 | Iustin Pop | |
933 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
934 | 62779dd0 | Iustin Pop | def GetClusterInfo(self): |
935 | 62779dd0 | Iustin Pop | """Returns informations about the cluster
|
936 | 62779dd0 | Iustin Pop |
|
937 | 62779dd0 | Iustin Pop | Returns:
|
938 | 62779dd0 | Iustin Pop | the cluster object
|
939 | 62779dd0 | Iustin Pop |
|
940 | 62779dd0 | Iustin Pop | """
|
941 | 62779dd0 | Iustin Pop | return self._config_data.cluster |
942 | e00fb268 | Iustin Pop | |
943 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
944 | e00fb268 | Iustin Pop | def Update(self, target): |
945 | e00fb268 | Iustin Pop | """Notify function to be called after updates.
|
946 | e00fb268 | Iustin Pop |
|
947 | e00fb268 | Iustin Pop | This function must be called when an object (as returned by
|
948 | e00fb268 | Iustin Pop | GetInstanceInfo, GetNodeInfo, GetCluster) has been updated and the
|
949 | e00fb268 | Iustin Pop | caller wants the modifications saved to the backing store. Note
|
950 | e00fb268 | Iustin Pop | that all modified objects will be saved, but the target argument
|
951 | e00fb268 | Iustin Pop | is the one the caller wants to ensure that it's saved.
|
952 | e00fb268 | Iustin Pop |
|
953 | e00fb268 | Iustin Pop | """
|
954 | e00fb268 | Iustin Pop | if self._config_data is None: |
955 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Configuration file not read," |
956 | 3ecf6786 | Iustin Pop | " cannot save.")
|
957 | f34901f8 | Iustin Pop | update_serial = False
|
958 | e00fb268 | Iustin Pop | if isinstance(target, objects.Cluster): |
959 | e00fb268 | Iustin Pop | test = target == self._config_data.cluster
|
960 | e00fb268 | Iustin Pop | elif isinstance(target, objects.Node): |
961 | e00fb268 | Iustin Pop | test = target in self._config_data.nodes.values() |
962 | f34901f8 | Iustin Pop | update_serial = True
|
963 | e00fb268 | Iustin Pop | elif isinstance(target, objects.Instance): |
964 | e00fb268 | Iustin Pop | test = target in self._config_data.instances.values() |
965 | e00fb268 | Iustin Pop | else:
|
966 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Invalid object type (%s) passed to" |
967 | 3ecf6786 | Iustin Pop | " ConfigWriter.Update" % type(target)) |
968 | e00fb268 | Iustin Pop | if not test: |
969 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Configuration updated since object" |
970 | 3ecf6786 | Iustin Pop | " has been read or unknown object")
|
971 | f34901f8 | Iustin Pop | target.serial_no += 1
|
972 | f34901f8 | Iustin Pop | |
973 | cff4c037 | Iustin Pop | if update_serial:
|
974 | f34901f8 | Iustin Pop | # for node updates, we need to increase the cluster serial too
|
975 | f34901f8 | Iustin Pop | self._config_data.cluster.serial_no += 1 |
976 | b989e85d | Iustin Pop | |
977 | e00fb268 | Iustin Pop | self._WriteConfig() |