root / lib / config.py @ 5bf07049
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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 | c41eea6e | Iustin Pop | """Verifies that a configuration objects looks valid.
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53 | c41eea6e | Iustin Pop |
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54 | c41eea6e | Iustin Pop | This only verifies the version of the configuration.
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55 | c41eea6e | Iustin Pop |
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56 | c41eea6e | Iustin Pop | @raise errors.ConfigurationError: if the version differs from what
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57 | c41eea6e | Iustin Pop | we expect
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58 | c41eea6e | Iustin Pop |
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59 | c41eea6e | Iustin Pop | """
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60 | 5b263ed7 | Michael Hanselmann | if data.version != constants.CONFIG_VERSION:
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61 | 243cdbcc | Michael Hanselmann | raise errors.ConfigurationError("Cluster configuration version" |
62 | 243cdbcc | Michael Hanselmann | " mismatch, got %s instead of %s" %
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63 | 5b263ed7 | Michael Hanselmann | (data.version, |
64 | 243cdbcc | Michael Hanselmann | constants.CONFIG_VERSION)) |
65 | a8083063 | Iustin Pop | |
66 | 319856a9 | Michael Hanselmann | |
67 | a8083063 | Iustin Pop | class ConfigWriter: |
68 | 098c0958 | Michael Hanselmann | """The interface to the cluster configuration.
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69 | a8083063 | Iustin Pop |
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70 | 098c0958 | Michael Hanselmann | """
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71 | a8083063 | Iustin Pop | def __init__(self, cfg_file=None, offline=False): |
72 | 14e15659 | Iustin Pop | self.write_count = 0 |
73 | f78ede4e | Guido Trotter | self._lock = _config_lock
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74 | a8083063 | Iustin Pop | self._config_data = None |
75 | a8083063 | Iustin Pop | self._offline = offline
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76 | a8083063 | Iustin Pop | if cfg_file is None: |
77 | a8083063 | Iustin Pop | self._cfg_file = constants.CLUSTER_CONF_FILE
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78 | a8083063 | Iustin Pop | else:
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79 | a8083063 | Iustin Pop | self._cfg_file = cfg_file
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80 | 923b1523 | Iustin Pop | self._temporary_ids = set() |
81 | a81c53c9 | Iustin Pop | self._temporary_drbds = {}
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82 | 89e1fc26 | Iustin Pop | # Note: in order to prevent errors when resolving our name in
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83 | 89e1fc26 | Iustin Pop | # _DistributeConfig, we compute it here once and reuse it; it's
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84 | 89e1fc26 | Iustin Pop | # better to raise an error before starting to modify the config
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85 | 89e1fc26 | Iustin Pop | # file than after it was modified
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86 | 89e1fc26 | Iustin Pop | self._my_hostname = utils.HostInfo().name
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87 | 3c7f6c44 | Iustin Pop | self._last_cluster_serial = -1 |
88 | 3d3a04bc | Iustin Pop | self._OpenConfig()
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89 | a8083063 | Iustin Pop | |
90 | a8083063 | Iustin Pop | # this method needs to be static, so that we can call it on the class
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91 | a8083063 | Iustin Pop | @staticmethod
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92 | a8083063 | Iustin Pop | def IsCluster(): |
93 | a8083063 | Iustin Pop | """Check if the cluster is configured.
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94 | a8083063 | Iustin Pop |
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95 | a8083063 | Iustin Pop | """
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96 | a8083063 | Iustin Pop | return os.path.exists(constants.CLUSTER_CONF_FILE)
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97 | a8083063 | Iustin Pop | |
98 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
99 | a8083063 | Iustin Pop | def GenerateMAC(self): |
100 | a8083063 | Iustin Pop | """Generate a MAC for an instance.
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101 | a8083063 | Iustin Pop |
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102 | a8083063 | Iustin Pop | This should check the current instances for duplicates.
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103 | a8083063 | Iustin Pop |
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104 | a8083063 | Iustin Pop | """
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105 | a8083063 | Iustin Pop | prefix = self._config_data.cluster.mac_prefix
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106 | a8083063 | Iustin Pop | all_macs = self._AllMACs()
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107 | a8083063 | Iustin Pop | retries = 64
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108 | a8083063 | Iustin Pop | while retries > 0: |
109 | a8083063 | Iustin Pop | byte1 = random.randrange(0, 256) |
110 | a8083063 | Iustin Pop | byte2 = random.randrange(0, 256) |
111 | a8083063 | Iustin Pop | byte3 = random.randrange(0, 256) |
112 | a8083063 | Iustin Pop | mac = "%s:%02x:%02x:%02x" % (prefix, byte1, byte2, byte3)
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113 | a8083063 | Iustin Pop | if mac not in all_macs: |
114 | a8083063 | Iustin Pop | break
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115 | a8083063 | Iustin Pop | retries -= 1
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116 | a8083063 | Iustin Pop | else:
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117 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Can't generate unique MAC") |
118 | a8083063 | Iustin Pop | return mac
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119 | a8083063 | Iustin Pop | |
120 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
121 | 1862d460 | Alexander Schreiber | def IsMacInUse(self, mac): |
122 | 1862d460 | Alexander Schreiber | """Predicate: check if the specified MAC is in use in the Ganeti cluster.
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123 | 1862d460 | Alexander Schreiber |
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124 | 1862d460 | Alexander Schreiber | This only checks instances managed by this cluster, it does not
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125 | 1862d460 | Alexander Schreiber | check for potential collisions elsewhere.
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126 | 1862d460 | Alexander Schreiber |
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127 | 1862d460 | Alexander Schreiber | """
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128 | 1862d460 | Alexander Schreiber | all_macs = self._AllMACs()
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129 | 1862d460 | Alexander Schreiber | return mac in all_macs |
130 | 1862d460 | Alexander Schreiber | |
131 | f9518d38 | Iustin Pop | @locking.ssynchronized(_config_lock, shared=1) |
132 | f9518d38 | Iustin Pop | def GenerateDRBDSecret(self): |
133 | f9518d38 | Iustin Pop | """Generate a DRBD secret.
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134 | f9518d38 | Iustin Pop |
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135 | f9518d38 | Iustin Pop | This checks the current disks for duplicates.
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136 | f9518d38 | Iustin Pop |
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137 | f9518d38 | Iustin Pop | """
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138 | f9518d38 | Iustin Pop | all_secrets = self._AllDRBDSecrets()
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139 | f9518d38 | Iustin Pop | retries = 64
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140 | f9518d38 | Iustin Pop | while retries > 0: |
141 | f9518d38 | Iustin Pop | secret = utils.GenerateSecret() |
142 | f9518d38 | Iustin Pop | if secret not in all_secrets: |
143 | f9518d38 | Iustin Pop | break
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144 | f9518d38 | Iustin Pop | retries -= 1
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145 | f9518d38 | Iustin Pop | else:
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146 | f9518d38 | Iustin Pop | raise errors.ConfigurationError("Can't generate unique DRBD secret") |
147 | f9518d38 | Iustin Pop | return secret
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148 | f9518d38 | Iustin Pop | |
149 | 923b1523 | Iustin Pop | def _ComputeAllLVs(self): |
150 | 923b1523 | Iustin Pop | """Compute the list of all LVs.
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151 | 923b1523 | Iustin Pop |
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152 | 923b1523 | Iustin Pop | """
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153 | 923b1523 | Iustin Pop | lvnames = set()
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154 | 923b1523 | Iustin Pop | for instance in self._config_data.instances.values(): |
155 | 923b1523 | Iustin Pop | node_data = instance.MapLVsByNode() |
156 | 923b1523 | Iustin Pop | for lv_list in node_data.values(): |
157 | 923b1523 | Iustin Pop | lvnames.update(lv_list) |
158 | 923b1523 | Iustin Pop | return lvnames
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159 | 923b1523 | Iustin Pop | |
160 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
161 | 923b1523 | Iustin Pop | def GenerateUniqueID(self, exceptions=None): |
162 | 923b1523 | Iustin Pop | """Generate an unique disk name.
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163 | 923b1523 | Iustin Pop |
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164 | 923b1523 | Iustin Pop | This checks the current node, instances and disk names for
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165 | 923b1523 | Iustin Pop | duplicates.
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166 | 923b1523 | Iustin Pop |
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167 | c41eea6e | Iustin Pop | @param exceptions: a list with some other names which should be checked
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168 | c41eea6e | Iustin Pop | for uniqueness (used for example when you want to get
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169 | c41eea6e | Iustin Pop | more than one id at one time without adding each one in
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170 | c41eea6e | Iustin Pop | turn to the config file)
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171 | 923b1523 | Iustin Pop |
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172 | c41eea6e | Iustin Pop | @rtype: string
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173 | c41eea6e | Iustin Pop | @return: the unique id
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174 | 923b1523 | Iustin Pop |
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175 | 923b1523 | Iustin Pop | """
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176 | 923b1523 | Iustin Pop | existing = set()
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177 | 923b1523 | Iustin Pop | existing.update(self._temporary_ids)
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178 | 923b1523 | Iustin Pop | existing.update(self._ComputeAllLVs())
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179 | 923b1523 | Iustin Pop | existing.update(self._config_data.instances.keys())
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180 | 923b1523 | Iustin Pop | existing.update(self._config_data.nodes.keys())
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181 | 923b1523 | Iustin Pop | if exceptions is not None: |
182 | 923b1523 | Iustin Pop | existing.update(exceptions) |
183 | 923b1523 | Iustin Pop | retries = 64
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184 | 923b1523 | Iustin Pop | while retries > 0: |
185 | 24818e8f | Michael Hanselmann | unique_id = utils.NewUUID() |
186 | 923b1523 | Iustin Pop | if unique_id not in existing and unique_id is not None: |
187 | 923b1523 | Iustin Pop | break
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188 | 923b1523 | Iustin Pop | else:
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189 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Not able generate an unique ID" |
190 | 3ecf6786 | Iustin Pop | " (last tried ID: %s" % unique_id)
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191 | 923b1523 | Iustin Pop | self._temporary_ids.add(unique_id)
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192 | 923b1523 | Iustin Pop | return unique_id
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193 | 923b1523 | Iustin Pop | |
194 | a8083063 | Iustin Pop | def _AllMACs(self): |
195 | a8083063 | Iustin Pop | """Return all MACs present in the config.
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196 | a8083063 | Iustin Pop |
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197 | c41eea6e | Iustin Pop | @rtype: list
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198 | c41eea6e | Iustin Pop | @return: the list of all MACs
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199 | c41eea6e | Iustin Pop |
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200 | a8083063 | Iustin Pop | """
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201 | a8083063 | Iustin Pop | result = [] |
202 | a8083063 | Iustin Pop | for instance in self._config_data.instances.values(): |
203 | a8083063 | Iustin Pop | for nic in instance.nics: |
204 | a8083063 | Iustin Pop | result.append(nic.mac) |
205 | a8083063 | Iustin Pop | |
206 | a8083063 | Iustin Pop | return result
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207 | a8083063 | Iustin Pop | |
208 | f9518d38 | Iustin Pop | def _AllDRBDSecrets(self): |
209 | f9518d38 | Iustin Pop | """Return all DRBD secrets present in the config.
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210 | f9518d38 | Iustin Pop |
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211 | c41eea6e | Iustin Pop | @rtype: list
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212 | c41eea6e | Iustin Pop | @return: the list of all DRBD secrets
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213 | c41eea6e | Iustin Pop |
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214 | f9518d38 | Iustin Pop | """
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215 | f9518d38 | Iustin Pop | def helper(disk, result): |
216 | f9518d38 | Iustin Pop | """Recursively gather secrets from this disk."""
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217 | f9518d38 | Iustin Pop | if disk.dev_type == constants.DT_DRBD8:
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218 | f9518d38 | Iustin Pop | result.append(disk.logical_id[5])
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219 | f9518d38 | Iustin Pop | if disk.children:
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220 | f9518d38 | Iustin Pop | for child in disk.children: |
221 | f9518d38 | Iustin Pop | helper(child, result) |
222 | f9518d38 | Iustin Pop | |
223 | f9518d38 | Iustin Pop | result = [] |
224 | f9518d38 | Iustin Pop | for instance in self._config_data.instances.values(): |
225 | f9518d38 | Iustin Pop | for disk in instance.disks: |
226 | f9518d38 | Iustin Pop | helper(disk, result) |
227 | f9518d38 | Iustin Pop | |
228 | f9518d38 | Iustin Pop | return result
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229 | f9518d38 | Iustin Pop | |
230 | 4a89c54a | Iustin Pop | def _UnlockedVerifyConfig(self): |
231 | a8efbb40 | Iustin Pop | """Verify function.
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232 | a8efbb40 | Iustin Pop |
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233 | 4a89c54a | Iustin Pop | @rtype: list
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234 | 4a89c54a | Iustin Pop | @return: a list of error messages; a non-empty list signifies
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235 | 4a89c54a | Iustin Pop | configuration errors
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236 | 4a89c54a | Iustin Pop |
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237 | a8083063 | Iustin Pop | """
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238 | a8083063 | Iustin Pop | result = [] |
239 | a8083063 | Iustin Pop | seen_macs = [] |
240 | 48ce9fd9 | Iustin Pop | ports = {} |
241 | a8083063 | Iustin Pop | data = self._config_data
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242 | a8083063 | Iustin Pop | for instance_name in data.instances: |
243 | a8083063 | Iustin Pop | instance = data.instances[instance_name] |
244 | a8083063 | Iustin Pop | if instance.primary_node not in data.nodes: |
245 | 8522ceeb | Iustin Pop | result.append("instance '%s' has invalid primary node '%s'" %
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246 | a8083063 | Iustin Pop | (instance_name, instance.primary_node)) |
247 | a8083063 | Iustin Pop | for snode in instance.secondary_nodes: |
248 | a8083063 | Iustin Pop | if snode not in data.nodes: |
249 | 8522ceeb | Iustin Pop | result.append("instance '%s' has invalid secondary node '%s'" %
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250 | a8083063 | Iustin Pop | (instance_name, snode)) |
251 | a8083063 | Iustin Pop | for idx, nic in enumerate(instance.nics): |
252 | a8083063 | Iustin Pop | if nic.mac in seen_macs: |
253 | 8522ceeb | Iustin Pop | result.append("instance '%s' has NIC %d mac %s duplicate" %
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254 | a8083063 | Iustin Pop | (instance_name, idx, nic.mac)) |
255 | a8083063 | Iustin Pop | else:
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256 | a8083063 | Iustin Pop | seen_macs.append(nic.mac) |
257 | 48ce9fd9 | Iustin Pop | |
258 | 48ce9fd9 | Iustin Pop | # gather the drbd ports for duplicate checks
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259 | 48ce9fd9 | Iustin Pop | for dsk in instance.disks: |
260 | 48ce9fd9 | Iustin Pop | if dsk.dev_type in constants.LDS_DRBD: |
261 | 48ce9fd9 | Iustin Pop | tcp_port = dsk.logical_id[2]
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262 | 48ce9fd9 | Iustin Pop | if tcp_port not in ports: |
263 | 48ce9fd9 | Iustin Pop | ports[tcp_port] = [] |
264 | 48ce9fd9 | Iustin Pop | ports[tcp_port].append((instance.name, "drbd disk %s" % dsk.iv_name))
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265 | 48ce9fd9 | Iustin Pop | # gather network port reservation
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266 | 48ce9fd9 | Iustin Pop | net_port = getattr(instance, "network_port", None) |
267 | 48ce9fd9 | Iustin Pop | if net_port is not None: |
268 | 48ce9fd9 | Iustin Pop | if net_port not in ports: |
269 | 48ce9fd9 | Iustin Pop | ports[net_port] = [] |
270 | 48ce9fd9 | Iustin Pop | ports[net_port].append((instance.name, "network port"))
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271 | 48ce9fd9 | Iustin Pop | |
272 | 332d0e37 | Iustin Pop | # instance disk verify
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273 | 332d0e37 | Iustin Pop | for idx, disk in enumerate(instance.disks): |
274 | 332d0e37 | Iustin Pop | result.extend(["instance '%s' disk %d error: %s" %
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275 | 332d0e37 | Iustin Pop | (instance.name, idx, msg) for msg in disk.Verify()]) |
276 | 332d0e37 | Iustin Pop | |
277 | 48ce9fd9 | Iustin Pop | # cluster-wide pool of free ports
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278 | a8efbb40 | Iustin Pop | for free_port in data.cluster.tcpudp_port_pool: |
279 | 48ce9fd9 | Iustin Pop | if free_port not in ports: |
280 | 48ce9fd9 | Iustin Pop | ports[free_port] = [] |
281 | 48ce9fd9 | Iustin Pop | ports[free_port].append(("cluster", "port marked as free")) |
282 | 48ce9fd9 | Iustin Pop | |
283 | 48ce9fd9 | Iustin Pop | # compute tcp/udp duplicate ports
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284 | 48ce9fd9 | Iustin Pop | keys = ports.keys() |
285 | 48ce9fd9 | Iustin Pop | keys.sort() |
286 | 48ce9fd9 | Iustin Pop | for pnum in keys: |
287 | 48ce9fd9 | Iustin Pop | pdata = ports[pnum] |
288 | 48ce9fd9 | Iustin Pop | if len(pdata) > 1: |
289 | 48ce9fd9 | Iustin Pop | txt = ", ".join(["%s/%s" % val for val in pdata]) |
290 | 48ce9fd9 | Iustin Pop | result.append("tcp/udp port %s has duplicates: %s" % (pnum, txt))
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291 | 48ce9fd9 | Iustin Pop | |
292 | 48ce9fd9 | Iustin Pop | # highest used tcp port check
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293 | 48ce9fd9 | Iustin Pop | if keys:
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294 | a8efbb40 | Iustin Pop | if keys[-1] > data.cluster.highest_used_port: |
295 | 48ce9fd9 | Iustin Pop | result.append("Highest used port mismatch, saved %s, computed %s" %
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296 | a8efbb40 | Iustin Pop | (data.cluster.highest_used_port, keys[-1]))
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297 | a8efbb40 | Iustin Pop | |
298 | 3a26773f | Iustin Pop | if not data.nodes[data.cluster.master_node].master_candidate: |
299 | 3a26773f | Iustin Pop | result.append("Master node is not a master candidate")
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300 | 3a26773f | Iustin Pop | |
301 | 4a89c54a | Iustin Pop | # master candidate checks
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302 | ec0292f1 | Iustin Pop | mc_now, mc_max = self._UnlockedGetMasterCandidateStats()
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303 | ec0292f1 | Iustin Pop | if mc_now < mc_max:
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304 | ec0292f1 | Iustin Pop | result.append("Not enough master candidates: actual %d, target %d" %
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305 | ec0292f1 | Iustin Pop | (mc_now, mc_max)) |
306 | 48ce9fd9 | Iustin Pop | |
307 | 5bf07049 | Iustin Pop | # node checks
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308 | 5bf07049 | Iustin Pop | for node in data.nodes.values(): |
309 | 5bf07049 | Iustin Pop | if [node.master_candidate, node.drained, node.offline].count(True) > 1: |
310 | 5bf07049 | Iustin Pop | result.append("Node %s state is invalid: master_candidate=%s,"
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311 | 5bf07049 | Iustin Pop | " drain=%s, offline=%s" %
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312 | 5bf07049 | Iustin Pop | (node.name, node.master_candidate, node.drain, |
313 | 5bf07049 | Iustin Pop | node.offline)) |
314 | 5bf07049 | Iustin Pop | |
315 | 4a89c54a | Iustin Pop | # drbd minors check
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316 | 4a89c54a | Iustin Pop | d_map, duplicates = self._UnlockedComputeDRBDMap()
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317 | 4a89c54a | Iustin Pop | for node, minor, instance_a, instance_b in duplicates: |
318 | 4a89c54a | Iustin Pop | result.append("DRBD minor %d on node %s is assigned twice to instances"
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319 | 4a89c54a | Iustin Pop | " %s and %s" % (minor, node, instance_a, instance_b))
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320 | 4a89c54a | Iustin Pop | |
321 | a8083063 | Iustin Pop | return result
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322 | a8083063 | Iustin Pop | |
323 | 4a89c54a | Iustin Pop | @locking.ssynchronized(_config_lock, shared=1) |
324 | 4a89c54a | Iustin Pop | def VerifyConfig(self): |
325 | 4a89c54a | Iustin Pop | """Verify function.
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326 | 4a89c54a | Iustin Pop |
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327 | 4a89c54a | Iustin Pop | This is just a wrapper over L{_UnlockedVerifyConfig}.
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328 | 4a89c54a | Iustin Pop |
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329 | 4a89c54a | Iustin Pop | @rtype: list
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330 | 4a89c54a | Iustin Pop | @return: a list of error messages; a non-empty list signifies
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331 | 4a89c54a | Iustin Pop | configuration errors
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332 | 4a89c54a | Iustin Pop |
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333 | 4a89c54a | Iustin Pop | """
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334 | 4a89c54a | Iustin Pop | return self._UnlockedVerifyConfig() |
335 | 4a89c54a | Iustin Pop | |
336 | f78ede4e | Guido Trotter | def _UnlockedSetDiskID(self, disk, node_name): |
337 | a8083063 | Iustin Pop | """Convert the unique ID to the ID needed on the target nodes.
|
338 | a8083063 | Iustin Pop |
|
339 | a8083063 | Iustin Pop | This is used only for drbd, which needs ip/port configuration.
|
340 | a8083063 | Iustin Pop |
|
341 | a8083063 | Iustin Pop | The routine descends down and updates its children also, because
|
342 | a8083063 | Iustin Pop | this helps when the only the top device is passed to the remote
|
343 | a8083063 | Iustin Pop | node.
|
344 | a8083063 | Iustin Pop |
|
345 | f78ede4e | Guido Trotter | This function is for internal use, when the config lock is already held.
|
346 | f78ede4e | Guido Trotter |
|
347 | a8083063 | Iustin Pop | """
|
348 | a8083063 | Iustin Pop | if disk.children:
|
349 | a8083063 | Iustin Pop | for child in disk.children: |
350 | f78ede4e | Guido Trotter | self._UnlockedSetDiskID(child, node_name)
|
351 | a8083063 | Iustin Pop | |
352 | a8083063 | Iustin Pop | if disk.logical_id is None and disk.physical_id is not None: |
353 | a8083063 | Iustin Pop | return
|
354 | ffa1c0dc | Iustin Pop | if disk.dev_type == constants.LD_DRBD8:
|
355 | f9518d38 | Iustin Pop | pnode, snode, port, pminor, sminor, secret = disk.logical_id |
356 | a8083063 | Iustin Pop | if node_name not in (pnode, snode): |
357 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("DRBD device not knowing node %s" % |
358 | 3ecf6786 | Iustin Pop | node_name) |
359 | f78ede4e | Guido Trotter | pnode_info = self._UnlockedGetNodeInfo(pnode)
|
360 | f78ede4e | Guido Trotter | snode_info = self._UnlockedGetNodeInfo(snode)
|
361 | a8083063 | Iustin Pop | if pnode_info is None or snode_info is None: |
362 | a8083063 | Iustin Pop | raise errors.ConfigurationError("Can't find primary or secondary node" |
363 | a8083063 | Iustin Pop | " for %s" % str(disk)) |
364 | ffa1c0dc | Iustin Pop | p_data = (pnode_info.secondary_ip, port) |
365 | ffa1c0dc | Iustin Pop | s_data = (snode_info.secondary_ip, port) |
366 | a8083063 | Iustin Pop | if pnode == node_name:
|
367 | f9518d38 | Iustin Pop | disk.physical_id = p_data + s_data + (pminor, secret) |
368 | a8083063 | Iustin Pop | else: # it must be secondary, we tested above |
369 | f9518d38 | Iustin Pop | disk.physical_id = s_data + p_data + (sminor, secret) |
370 | a8083063 | Iustin Pop | else:
|
371 | a8083063 | Iustin Pop | disk.physical_id = disk.logical_id |
372 | a8083063 | Iustin Pop | return
|
373 | a8083063 | Iustin Pop | |
374 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
375 | f78ede4e | Guido Trotter | def SetDiskID(self, disk, node_name): |
376 | f78ede4e | Guido Trotter | """Convert the unique ID to the ID needed on the target nodes.
|
377 | f78ede4e | Guido Trotter |
|
378 | f78ede4e | Guido Trotter | This is used only for drbd, which needs ip/port configuration.
|
379 | f78ede4e | Guido Trotter |
|
380 | f78ede4e | Guido Trotter | The routine descends down and updates its children also, because
|
381 | f78ede4e | Guido Trotter | this helps when the only the top device is passed to the remote
|
382 | f78ede4e | Guido Trotter | node.
|
383 | f78ede4e | Guido Trotter |
|
384 | f78ede4e | Guido Trotter | """
|
385 | f78ede4e | Guido Trotter | return self._UnlockedSetDiskID(disk, node_name) |
386 | f78ede4e | Guido Trotter | |
387 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
388 | b2fddf63 | Iustin Pop | def AddTcpUdpPort(self, port): |
389 | b2fddf63 | Iustin Pop | """Adds a new port to the available port pool.
|
390 | b2fddf63 | Iustin Pop |
|
391 | b2fddf63 | Iustin Pop | """
|
392 | 264bb3c5 | Michael Hanselmann | if not isinstance(port, int): |
393 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Invalid type passed for port") |
394 | 264bb3c5 | Michael Hanselmann | |
395 | b2fddf63 | Iustin Pop | self._config_data.cluster.tcpudp_port_pool.add(port)
|
396 | 264bb3c5 | Michael Hanselmann | self._WriteConfig()
|
397 | 264bb3c5 | Michael Hanselmann | |
398 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
399 | b2fddf63 | Iustin Pop | def GetPortList(self): |
400 | 264bb3c5 | Michael Hanselmann | """Returns a copy of the current port list.
|
401 | 264bb3c5 | Michael Hanselmann |
|
402 | 264bb3c5 | Michael Hanselmann | """
|
403 | b2fddf63 | Iustin Pop | return self._config_data.cluster.tcpudp_port_pool.copy() |
404 | 264bb3c5 | Michael Hanselmann | |
405 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
406 | a8083063 | Iustin Pop | def AllocatePort(self): |
407 | a8083063 | Iustin Pop | """Allocate a port.
|
408 | a8083063 | Iustin Pop |
|
409 | b2fddf63 | Iustin Pop | The port will be taken from the available port pool or from the
|
410 | b2fddf63 | Iustin Pop | default port range (and in this case we increase
|
411 | b2fddf63 | Iustin Pop | highest_used_port).
|
412 | a8083063 | Iustin Pop |
|
413 | a8083063 | Iustin Pop | """
|
414 | 264bb3c5 | Michael Hanselmann | # If there are TCP/IP ports configured, we use them first.
|
415 | b2fddf63 | Iustin Pop | if self._config_data.cluster.tcpudp_port_pool: |
416 | b2fddf63 | Iustin Pop | port = self._config_data.cluster.tcpudp_port_pool.pop()
|
417 | 264bb3c5 | Michael Hanselmann | else:
|
418 | 264bb3c5 | Michael Hanselmann | port = self._config_data.cluster.highest_used_port + 1 |
419 | 264bb3c5 | Michael Hanselmann | if port >= constants.LAST_DRBD_PORT:
|
420 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("The highest used port is greater" |
421 | 3ecf6786 | Iustin Pop | " than %s. Aborting." %
|
422 | 3ecf6786 | Iustin Pop | constants.LAST_DRBD_PORT) |
423 | 264bb3c5 | Michael Hanselmann | self._config_data.cluster.highest_used_port = port
|
424 | a8083063 | Iustin Pop | |
425 | a8083063 | Iustin Pop | self._WriteConfig()
|
426 | a8083063 | Iustin Pop | return port
|
427 | a8083063 | Iustin Pop | |
428 | 6d2e83d5 | Iustin Pop | def _UnlockedComputeDRBDMap(self): |
429 | a81c53c9 | Iustin Pop | """Compute the used DRBD minor/nodes.
|
430 | a81c53c9 | Iustin Pop |
|
431 | 4a89c54a | Iustin Pop | @rtype: (dict, list)
|
432 | c41eea6e | Iustin Pop | @return: dictionary of node_name: dict of minor: instance_name;
|
433 | c41eea6e | Iustin Pop | the returned dict will have all the nodes in it (even if with
|
434 | 4a89c54a | Iustin Pop | an empty list), and a list of duplicates; if the duplicates
|
435 | 4a89c54a | Iustin Pop | list is not empty, the configuration is corrupted and its caller
|
436 | 4a89c54a | Iustin Pop | should raise an exception
|
437 | a81c53c9 | Iustin Pop |
|
438 | a81c53c9 | Iustin Pop | """
|
439 | a81c53c9 | Iustin Pop | def _AppendUsedPorts(instance_name, disk, used): |
440 | 4a89c54a | Iustin Pop | duplicates = [] |
441 | f9518d38 | Iustin Pop | if disk.dev_type == constants.LD_DRBD8 and len(disk.logical_id) >= 5: |
442 | f9518d38 | Iustin Pop | nodeA, nodeB, dummy, minorA, minorB = disk.logical_id[:5]
|
443 | a81c53c9 | Iustin Pop | for node, port in ((nodeA, minorA), (nodeB, minorB)): |
444 | 4a89c54a | Iustin Pop | assert node in used, ("Node '%s' of instance '%s' not found" |
445 | 4a89c54a | Iustin Pop | " in node list" % (node, instance_name))
|
446 | a81c53c9 | Iustin Pop | if port in used[node]: |
447 | 4a89c54a | Iustin Pop | duplicates.append((node, port, instance_name, used[node][port])) |
448 | 4a89c54a | Iustin Pop | else:
|
449 | 4a89c54a | Iustin Pop | used[node][port] = instance_name |
450 | a81c53c9 | Iustin Pop | if disk.children:
|
451 | a81c53c9 | Iustin Pop | for child in disk.children: |
452 | 4a89c54a | Iustin Pop | duplicates.extend(_AppendUsedPorts(instance_name, child, used)) |
453 | 4a89c54a | Iustin Pop | return duplicates
|
454 | a81c53c9 | Iustin Pop | |
455 | 4a89c54a | Iustin Pop | duplicates = [] |
456 | a81c53c9 | Iustin Pop | my_dict = dict((node, {}) for node in self._config_data.nodes) |
457 | 79b26a7a | Iustin Pop | for instance in self._config_data.instances.itervalues(): |
458 | 79b26a7a | Iustin Pop | for disk in instance.disks: |
459 | 79b26a7a | Iustin Pop | duplicates.extend(_AppendUsedPorts(instance.name, disk, my_dict)) |
460 | a81c53c9 | Iustin Pop | for (node, minor), instance in self._temporary_drbds.iteritems(): |
461 | 79b26a7a | Iustin Pop | if minor in my_dict[node] and my_dict[node][minor] != instance: |
462 | 4a89c54a | Iustin Pop | duplicates.append((node, minor, instance, my_dict[node][minor])) |
463 | 4a89c54a | Iustin Pop | else:
|
464 | 4a89c54a | Iustin Pop | my_dict[node][minor] = instance |
465 | 4a89c54a | Iustin Pop | return my_dict, duplicates
|
466 | a81c53c9 | Iustin Pop | |
467 | a81c53c9 | Iustin Pop | @locking.ssynchronized(_config_lock)
|
468 | 6d2e83d5 | Iustin Pop | def ComputeDRBDMap(self): |
469 | 6d2e83d5 | Iustin Pop | """Compute the used DRBD minor/nodes.
|
470 | 6d2e83d5 | Iustin Pop |
|
471 | 6d2e83d5 | Iustin Pop | This is just a wrapper over L{_UnlockedComputeDRBDMap}.
|
472 | 6d2e83d5 | Iustin Pop |
|
473 | 6d2e83d5 | Iustin Pop | @return: dictionary of node_name: dict of minor: instance_name;
|
474 | 6d2e83d5 | Iustin Pop | the returned dict will have all the nodes in it (even if with
|
475 | 6d2e83d5 | Iustin Pop | an empty list).
|
476 | 6d2e83d5 | Iustin Pop |
|
477 | 6d2e83d5 | Iustin Pop | """
|
478 | 4a89c54a | Iustin Pop | d_map, duplicates = self._UnlockedComputeDRBDMap()
|
479 | 4a89c54a | Iustin Pop | if duplicates:
|
480 | 4a89c54a | Iustin Pop | raise errors.ConfigurationError("Duplicate DRBD ports detected: %s" % |
481 | 4a89c54a | Iustin Pop | str(duplicates))
|
482 | 4a89c54a | Iustin Pop | return d_map
|
483 | 6d2e83d5 | Iustin Pop | |
484 | 6d2e83d5 | Iustin Pop | @locking.ssynchronized(_config_lock)
|
485 | a81c53c9 | Iustin Pop | def AllocateDRBDMinor(self, nodes, instance): |
486 | a81c53c9 | Iustin Pop | """Allocate a drbd minor.
|
487 | a81c53c9 | Iustin Pop |
|
488 | a81c53c9 | Iustin Pop | The free minor will be automatically computed from the existing
|
489 | a81c53c9 | Iustin Pop | devices. A node can be given multiple times in order to allocate
|
490 | a81c53c9 | Iustin Pop | multiple minors. The result is the list of minors, in the same
|
491 | a81c53c9 | Iustin Pop | order as the passed nodes.
|
492 | a81c53c9 | Iustin Pop |
|
493 | 32388e6d | Iustin Pop | @type instance: string
|
494 | 32388e6d | Iustin Pop | @param instance: the instance for which we allocate minors
|
495 | 32388e6d | Iustin Pop |
|
496 | a81c53c9 | Iustin Pop | """
|
497 | 32388e6d | Iustin Pop | assert isinstance(instance, basestring), \ |
498 | 4a89c54a | Iustin Pop | "Invalid argument '%s' passed to AllocateDRBDMinor" % instance
|
499 | 32388e6d | Iustin Pop | |
500 | 4a89c54a | Iustin Pop | d_map, duplicates = self._UnlockedComputeDRBDMap()
|
501 | 4a89c54a | Iustin Pop | if duplicates:
|
502 | 4a89c54a | Iustin Pop | raise errors.ConfigurationError("Duplicate DRBD ports detected: %s" % |
503 | 4a89c54a | Iustin Pop | str(duplicates))
|
504 | a81c53c9 | Iustin Pop | result = [] |
505 | a81c53c9 | Iustin Pop | for nname in nodes: |
506 | a81c53c9 | Iustin Pop | ndata = d_map[nname] |
507 | a81c53c9 | Iustin Pop | if not ndata: |
508 | a81c53c9 | Iustin Pop | # no minors used, we can start at 0
|
509 | a81c53c9 | Iustin Pop | result.append(0)
|
510 | a81c53c9 | Iustin Pop | ndata[0] = instance
|
511 | d48663e4 | Iustin Pop | self._temporary_drbds[(nname, 0)] = instance |
512 | a81c53c9 | Iustin Pop | continue
|
513 | a81c53c9 | Iustin Pop | keys = ndata.keys() |
514 | a81c53c9 | Iustin Pop | keys.sort() |
515 | a81c53c9 | Iustin Pop | ffree = utils.FirstFree(keys) |
516 | a81c53c9 | Iustin Pop | if ffree is None: |
517 | a81c53c9 | Iustin Pop | # return the next minor
|
518 | a81c53c9 | Iustin Pop | # TODO: implement high-limit check
|
519 | a81c53c9 | Iustin Pop | minor = keys[-1] + 1 |
520 | a81c53c9 | Iustin Pop | else:
|
521 | a81c53c9 | Iustin Pop | minor = ffree |
522 | 4a89c54a | Iustin Pop | # double-check minor against current instances
|
523 | 4a89c54a | Iustin Pop | assert minor not in d_map[nname], \ |
524 | 4a89c54a | Iustin Pop | ("Attempt to reuse allocated DRBD minor %d on node %s,"
|
525 | 4a89c54a | Iustin Pop | " already allocated to instance %s" %
|
526 | 4a89c54a | Iustin Pop | (minor, nname, d_map[nname][minor])) |
527 | a81c53c9 | Iustin Pop | ndata[minor] = instance |
528 | 4a89c54a | Iustin Pop | # double-check minor against reservation
|
529 | 4a89c54a | Iustin Pop | r_key = (nname, minor) |
530 | 4a89c54a | Iustin Pop | assert r_key not in self._temporary_drbds, \ |
531 | 4a89c54a | Iustin Pop | ("Attempt to reuse reserved DRBD minor %d on node %s,"
|
532 | 4a89c54a | Iustin Pop | " reserved for instance %s" %
|
533 | 4a89c54a | Iustin Pop | (minor, nname, self._temporary_drbds[r_key]))
|
534 | 4a89c54a | Iustin Pop | self._temporary_drbds[r_key] = instance
|
535 | 4a89c54a | Iustin Pop | result.append(minor) |
536 | a81c53c9 | Iustin Pop | logging.debug("Request to allocate drbd minors, input: %s, returning %s",
|
537 | a81c53c9 | Iustin Pop | nodes, result) |
538 | a81c53c9 | Iustin Pop | return result
|
539 | a81c53c9 | Iustin Pop | |
540 | 61cf6b5e | Iustin Pop | def _UnlockedReleaseDRBDMinors(self, instance): |
541 | a81c53c9 | Iustin Pop | """Release temporary drbd minors allocated for a given instance.
|
542 | a81c53c9 | Iustin Pop |
|
543 | a81c53c9 | Iustin Pop | @type instance: string
|
544 | a81c53c9 | Iustin Pop | @param instance: the instance for which temporary minors should be
|
545 | a81c53c9 | Iustin Pop | released
|
546 | a81c53c9 | Iustin Pop |
|
547 | a81c53c9 | Iustin Pop | """
|
548 | 32388e6d | Iustin Pop | assert isinstance(instance, basestring), \ |
549 | 32388e6d | Iustin Pop | "Invalid argument passed to ReleaseDRBDMinors"
|
550 | a81c53c9 | Iustin Pop | for key, name in self._temporary_drbds.items(): |
551 | a81c53c9 | Iustin Pop | if name == instance:
|
552 | a81c53c9 | Iustin Pop | del self._temporary_drbds[key] |
553 | a81c53c9 | Iustin Pop | |
554 | 61cf6b5e | Iustin Pop | @locking.ssynchronized(_config_lock)
|
555 | 61cf6b5e | Iustin Pop | def ReleaseDRBDMinors(self, instance): |
556 | 61cf6b5e | Iustin Pop | """Release temporary drbd minors allocated for a given instance.
|
557 | 61cf6b5e | Iustin Pop |
|
558 | 61cf6b5e | Iustin Pop | This should be called on the error paths, on the success paths
|
559 | 61cf6b5e | Iustin Pop | it's automatically called by the ConfigWriter add and update
|
560 | 61cf6b5e | Iustin Pop | functions.
|
561 | 61cf6b5e | Iustin Pop |
|
562 | 61cf6b5e | Iustin Pop | This function is just a wrapper over L{_UnlockedReleaseDRBDMinors}.
|
563 | 61cf6b5e | Iustin Pop |
|
564 | 61cf6b5e | Iustin Pop | @type instance: string
|
565 | 61cf6b5e | Iustin Pop | @param instance: the instance for which temporary minors should be
|
566 | 61cf6b5e | Iustin Pop | released
|
567 | 61cf6b5e | Iustin Pop |
|
568 | 61cf6b5e | Iustin Pop | """
|
569 | 61cf6b5e | Iustin Pop | self._UnlockedReleaseDRBDMinors(instance)
|
570 | 61cf6b5e | Iustin Pop | |
571 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
572 | 4a8b186a | Michael Hanselmann | def GetConfigVersion(self): |
573 | 4a8b186a | Michael Hanselmann | """Get the configuration version.
|
574 | 4a8b186a | Michael Hanselmann |
|
575 | 4a8b186a | Michael Hanselmann | @return: Config version
|
576 | 4a8b186a | Michael Hanselmann |
|
577 | 4a8b186a | Michael Hanselmann | """
|
578 | 4a8b186a | Michael Hanselmann | return self._config_data.version |
579 | 4a8b186a | Michael Hanselmann | |
580 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
581 | 4a8b186a | Michael Hanselmann | def GetClusterName(self): |
582 | 4a8b186a | Michael Hanselmann | """Get cluster name.
|
583 | 4a8b186a | Michael Hanselmann |
|
584 | 4a8b186a | Michael Hanselmann | @return: Cluster name
|
585 | 4a8b186a | Michael Hanselmann |
|
586 | 4a8b186a | Michael Hanselmann | """
|
587 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.cluster_name |
588 | 4a8b186a | Michael Hanselmann | |
589 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
590 | 4a8b186a | Michael Hanselmann | def GetMasterNode(self): |
591 | 4a8b186a | Michael Hanselmann | """Get the hostname of the master node for this cluster.
|
592 | 4a8b186a | Michael Hanselmann |
|
593 | 4a8b186a | Michael Hanselmann | @return: Master hostname
|
594 | 4a8b186a | Michael Hanselmann |
|
595 | 4a8b186a | Michael Hanselmann | """
|
596 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.master_node |
597 | 4a8b186a | Michael Hanselmann | |
598 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
599 | 4a8b186a | Michael Hanselmann | def GetMasterIP(self): |
600 | 4a8b186a | Michael Hanselmann | """Get the IP of the master node for this cluster.
|
601 | 4a8b186a | Michael Hanselmann |
|
602 | 4a8b186a | Michael Hanselmann | @return: Master IP
|
603 | 4a8b186a | Michael Hanselmann |
|
604 | 4a8b186a | Michael Hanselmann | """
|
605 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.master_ip |
606 | 4a8b186a | Michael Hanselmann | |
607 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
608 | 4a8b186a | Michael Hanselmann | def GetMasterNetdev(self): |
609 | 4a8b186a | Michael Hanselmann | """Get the master network device for this cluster.
|
610 | 4a8b186a | Michael Hanselmann |
|
611 | 4a8b186a | Michael Hanselmann | """
|
612 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.master_netdev |
613 | 4a8b186a | Michael Hanselmann | |
614 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
615 | 4a8b186a | Michael Hanselmann | def GetFileStorageDir(self): |
616 | 4a8b186a | Michael Hanselmann | """Get the file storage dir for this cluster.
|
617 | 4a8b186a | Michael Hanselmann |
|
618 | 4a8b186a | Michael Hanselmann | """
|
619 | 4a8b186a | Michael Hanselmann | return self._config_data.cluster.file_storage_dir |
620 | 4a8b186a | Michael Hanselmann | |
621 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
622 | 4a8b186a | Michael Hanselmann | def GetHypervisorType(self): |
623 | 4a8b186a | Michael Hanselmann | """Get the hypervisor type for this cluster.
|
624 | 4a8b186a | Michael Hanselmann |
|
625 | 4a8b186a | Michael Hanselmann | """
|
626 | 64272529 | Iustin Pop | return self._config_data.cluster.default_hypervisor |
627 | 4a8b186a | Michael Hanselmann | |
628 | 4a8b186a | Michael Hanselmann | @locking.ssynchronized(_config_lock, shared=1) |
629 | a8083063 | Iustin Pop | def GetHostKey(self): |
630 | a8083063 | Iustin Pop | """Return the rsa hostkey from the config.
|
631 | a8083063 | Iustin Pop |
|
632 | c41eea6e | Iustin Pop | @rtype: string
|
633 | c41eea6e | Iustin Pop | @return: the rsa hostkey
|
634 | a8083063 | Iustin Pop |
|
635 | a8083063 | Iustin Pop | """
|
636 | a8083063 | Iustin Pop | return self._config_data.cluster.rsahostkeypub |
637 | a8083063 | Iustin Pop | |
638 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
639 | a8083063 | Iustin Pop | def AddInstance(self, instance): |
640 | a8083063 | Iustin Pop | """Add an instance to the config.
|
641 | a8083063 | Iustin Pop |
|
642 | a8083063 | Iustin Pop | This should be used after creating a new instance.
|
643 | a8083063 | Iustin Pop |
|
644 | c41eea6e | Iustin Pop | @type instance: L{objects.Instance}
|
645 | c41eea6e | Iustin Pop | @param instance: the instance object
|
646 | c41eea6e | Iustin Pop |
|
647 | a8083063 | Iustin Pop | """
|
648 | a8083063 | Iustin Pop | if not isinstance(instance, objects.Instance): |
649 | a8083063 | Iustin Pop | raise errors.ProgrammerError("Invalid type passed to AddInstance") |
650 | a8083063 | Iustin Pop | |
651 | e00fb268 | Iustin Pop | if instance.disk_template != constants.DT_DISKLESS:
|
652 | e00fb268 | Iustin Pop | all_lvs = instance.MapLVsByNode() |
653 | 74a48621 | Iustin Pop | logging.info("Instance '%s' DISK_LAYOUT: %s", instance.name, all_lvs)
|
654 | 923b1523 | Iustin Pop | |
655 | b989e85d | Iustin Pop | instance.serial_no = 1
|
656 | a8083063 | Iustin Pop | self._config_data.instances[instance.name] = instance
|
657 | 81a49123 | Iustin Pop | self._config_data.cluster.serial_no += 1 |
658 | 61cf6b5e | Iustin Pop | self._UnlockedReleaseDRBDMinors(instance.name)
|
659 | a8083063 | Iustin Pop | self._WriteConfig()
|
660 | a8083063 | Iustin Pop | |
661 | 6a408fb2 | Iustin Pop | def _SetInstanceStatus(self, instance_name, status): |
662 | 6a408fb2 | Iustin Pop | """Set the instance's status to a given value.
|
663 | a8083063 | Iustin Pop |
|
664 | a8083063 | Iustin Pop | """
|
665 | 0d68c45d | Iustin Pop | assert isinstance(status, bool), \ |
666 | 0d68c45d | Iustin Pop | "Invalid status '%s' passed to SetInstanceStatus" % (status,)
|
667 | a8083063 | Iustin Pop | |
668 | a8083063 | Iustin Pop | if instance_name not in self._config_data.instances: |
669 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % |
670 | 3ecf6786 | Iustin Pop | instance_name) |
671 | a8083063 | Iustin Pop | instance = self._config_data.instances[instance_name]
|
672 | 0d68c45d | Iustin Pop | if instance.admin_up != status:
|
673 | 0d68c45d | Iustin Pop | instance.admin_up = status |
674 | b989e85d | Iustin Pop | instance.serial_no += 1
|
675 | 455a3445 | Iustin Pop | self._WriteConfig()
|
676 | a8083063 | Iustin Pop | |
677 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
678 | 6a408fb2 | Iustin Pop | def MarkInstanceUp(self, instance_name): |
679 | 6a408fb2 | Iustin Pop | """Mark the instance status to up in the config.
|
680 | 6a408fb2 | Iustin Pop |
|
681 | 6a408fb2 | Iustin Pop | """
|
682 | 0d68c45d | Iustin Pop | self._SetInstanceStatus(instance_name, True) |
683 | 6a408fb2 | Iustin Pop | |
684 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
685 | a8083063 | Iustin Pop | def RemoveInstance(self, instance_name): |
686 | a8083063 | Iustin Pop | """Remove the instance from the configuration.
|
687 | a8083063 | Iustin Pop |
|
688 | a8083063 | Iustin Pop | """
|
689 | a8083063 | Iustin Pop | if instance_name not in self._config_data.instances: |
690 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % instance_name) |
691 | a8083063 | Iustin Pop | del self._config_data.instances[instance_name] |
692 | 81a49123 | Iustin Pop | self._config_data.cluster.serial_no += 1 |
693 | a8083063 | Iustin Pop | self._WriteConfig()
|
694 | a8083063 | Iustin Pop | |
695 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
696 | fc95f88f | Iustin Pop | def RenameInstance(self, old_name, new_name): |
697 | fc95f88f | Iustin Pop | """Rename an instance.
|
698 | fc95f88f | Iustin Pop |
|
699 | fc95f88f | Iustin Pop | This needs to be done in ConfigWriter and not by RemoveInstance
|
700 | fc95f88f | Iustin Pop | combined with AddInstance as only we can guarantee an atomic
|
701 | fc95f88f | Iustin Pop | rename.
|
702 | fc95f88f | Iustin Pop |
|
703 | fc95f88f | Iustin Pop | """
|
704 | fc95f88f | Iustin Pop | if old_name not in self._config_data.instances: |
705 | fc95f88f | Iustin Pop | raise errors.ConfigurationError("Unknown instance '%s'" % old_name) |
706 | fc95f88f | Iustin Pop | inst = self._config_data.instances[old_name]
|
707 | fc95f88f | Iustin Pop | del self._config_data.instances[old_name] |
708 | fc95f88f | Iustin Pop | inst.name = new_name |
709 | b23c4333 | Manuel Franceschini | |
710 | b23c4333 | Manuel Franceschini | for disk in inst.disks: |
711 | b23c4333 | Manuel Franceschini | if disk.dev_type == constants.LD_FILE:
|
712 | b23c4333 | Manuel Franceschini | # rename the file paths in logical and physical id
|
713 | b23c4333 | Manuel Franceschini | file_storage_dir = os.path.dirname(os.path.dirname(disk.logical_id[1]))
|
714 | b23c4333 | Manuel Franceschini | disk.physical_id = disk.logical_id = (disk.logical_id[0],
|
715 | b23c4333 | Manuel Franceschini | os.path.join(file_storage_dir, |
716 | b23c4333 | Manuel Franceschini | inst.name, |
717 | b23c4333 | Manuel Franceschini | disk.iv_name)) |
718 | b23c4333 | Manuel Franceschini | |
719 | fc95f88f | Iustin Pop | self._config_data.instances[inst.name] = inst
|
720 | fc95f88f | Iustin Pop | self._WriteConfig()
|
721 | fc95f88f | Iustin Pop | |
722 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
723 | a8083063 | Iustin Pop | def MarkInstanceDown(self, instance_name): |
724 | a8083063 | Iustin Pop | """Mark the status of an instance to down in the configuration.
|
725 | a8083063 | Iustin Pop |
|
726 | a8083063 | Iustin Pop | """
|
727 | 0d68c45d | Iustin Pop | self._SetInstanceStatus(instance_name, False) |
728 | a8083063 | Iustin Pop | |
729 | 94bbfece | Iustin Pop | def _UnlockedGetInstanceList(self): |
730 | 94bbfece | Iustin Pop | """Get the list of instances.
|
731 | 94bbfece | Iustin Pop |
|
732 | 94bbfece | Iustin Pop | This function is for internal use, when the config lock is already held.
|
733 | 94bbfece | Iustin Pop |
|
734 | 94bbfece | Iustin Pop | """
|
735 | 94bbfece | Iustin Pop | return self._config_data.instances.keys() |
736 | 94bbfece | Iustin Pop | |
737 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
738 | a8083063 | Iustin Pop | def GetInstanceList(self): |
739 | a8083063 | Iustin Pop | """Get the list of instances.
|
740 | a8083063 | Iustin Pop |
|
741 | c41eea6e | Iustin Pop | @return: array of instances, ex. ['instance2.example.com',
|
742 | c41eea6e | Iustin Pop | 'instance1.example.com']
|
743 | a8083063 | Iustin Pop |
|
744 | a8083063 | Iustin Pop | """
|
745 | 94bbfece | Iustin Pop | return self._UnlockedGetInstanceList() |
746 | a8083063 | Iustin Pop | |
747 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
748 | a8083063 | Iustin Pop | def ExpandInstanceName(self, short_name): |
749 | a8083063 | Iustin Pop | """Attempt to expand an incomplete instance name.
|
750 | a8083063 | Iustin Pop |
|
751 | a8083063 | Iustin Pop | """
|
752 | a8083063 | Iustin Pop | return utils.MatchNameComponent(short_name,
|
753 | a8083063 | Iustin Pop | self._config_data.instances.keys())
|
754 | a8083063 | Iustin Pop | |
755 | 94bbfece | Iustin Pop | def _UnlockedGetInstanceInfo(self, instance_name): |
756 | 94bbfece | Iustin Pop | """Returns informations about an instance.
|
757 | 94bbfece | Iustin Pop |
|
758 | 94bbfece | Iustin Pop | This function is for internal use, when the config lock is already held.
|
759 | 94bbfece | Iustin Pop |
|
760 | 94bbfece | Iustin Pop | """
|
761 | 94bbfece | Iustin Pop | if instance_name not in self._config_data.instances: |
762 | 94bbfece | Iustin Pop | return None |
763 | 94bbfece | Iustin Pop | |
764 | 94bbfece | Iustin Pop | return self._config_data.instances[instance_name] |
765 | 94bbfece | Iustin Pop | |
766 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
767 | a8083063 | Iustin Pop | def GetInstanceInfo(self, instance_name): |
768 | a8083063 | Iustin Pop | """Returns informations about an instance.
|
769 | a8083063 | Iustin Pop |
|
770 | a8083063 | Iustin Pop | It takes the information from the configuration file. Other informations of
|
771 | a8083063 | Iustin Pop | an instance are taken from the live systems.
|
772 | a8083063 | Iustin Pop |
|
773 | c41eea6e | Iustin Pop | @param instance_name: name of the instance, e.g.
|
774 | c41eea6e | Iustin Pop | I{instance1.example.com}
|
775 | a8083063 | Iustin Pop |
|
776 | c41eea6e | Iustin Pop | @rtype: L{objects.Instance}
|
777 | c41eea6e | Iustin Pop | @return: the instance object
|
778 | a8083063 | Iustin Pop |
|
779 | a8083063 | Iustin Pop | """
|
780 | 94bbfece | Iustin Pop | return self._UnlockedGetInstanceInfo(instance_name) |
781 | a8083063 | Iustin Pop | |
782 | 0b2de758 | Iustin Pop | @locking.ssynchronized(_config_lock, shared=1) |
783 | 0b2de758 | Iustin Pop | def GetAllInstancesInfo(self): |
784 | 0b2de758 | Iustin Pop | """Get the configuration of all instances.
|
785 | 0b2de758 | Iustin Pop |
|
786 | 0b2de758 | Iustin Pop | @rtype: dict
|
787 | 0b2de758 | Iustin Pop | @returns: dict of (instance, instance_info), where instance_info is what
|
788 | 0b2de758 | Iustin Pop | would GetInstanceInfo return for the node
|
789 | 0b2de758 | Iustin Pop |
|
790 | 0b2de758 | Iustin Pop | """
|
791 | 64d3bd52 | Guido Trotter | my_dict = dict([(instance, self._UnlockedGetInstanceInfo(instance)) |
792 | 64d3bd52 | Guido Trotter | for instance in self._UnlockedGetInstanceList()]) |
793 | 0b2de758 | Iustin Pop | return my_dict
|
794 | 0b2de758 | Iustin Pop | |
795 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
796 | a8083063 | Iustin Pop | def AddNode(self, node): |
797 | a8083063 | Iustin Pop | """Add a node to the configuration.
|
798 | a8083063 | Iustin Pop |
|
799 | c41eea6e | Iustin Pop | @type node: L{objects.Node}
|
800 | c41eea6e | Iustin Pop | @param node: a Node instance
|
801 | a8083063 | Iustin Pop |
|
802 | a8083063 | Iustin Pop | """
|
803 | d8470559 | Michael Hanselmann | logging.info("Adding node %s to configuration" % node.name)
|
804 | d8470559 | Michael Hanselmann | |
805 | b989e85d | Iustin Pop | node.serial_no = 1
|
806 | a8083063 | Iustin Pop | self._config_data.nodes[node.name] = node
|
807 | b9f72b4e | Iustin Pop | self._config_data.cluster.serial_no += 1 |
808 | a8083063 | Iustin Pop | self._WriteConfig()
|
809 | a8083063 | Iustin Pop | |
810 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
811 | a8083063 | Iustin Pop | def RemoveNode(self, node_name): |
812 | a8083063 | Iustin Pop | """Remove a node from the configuration.
|
813 | a8083063 | Iustin Pop |
|
814 | a8083063 | Iustin Pop | """
|
815 | d8470559 | Michael Hanselmann | logging.info("Removing node %s from configuration" % node_name)
|
816 | d8470559 | Michael Hanselmann | |
817 | a8083063 | Iustin Pop | if node_name not in self._config_data.nodes: |
818 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Unknown node '%s'" % node_name) |
819 | a8083063 | Iustin Pop | |
820 | a8083063 | Iustin Pop | del self._config_data.nodes[node_name] |
821 | b9f72b4e | Iustin Pop | self._config_data.cluster.serial_no += 1 |
822 | a8083063 | Iustin Pop | self._WriteConfig()
|
823 | a8083063 | Iustin Pop | |
824 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
825 | a8083063 | Iustin Pop | def ExpandNodeName(self, short_name): |
826 | a8083063 | Iustin Pop | """Attempt to expand an incomplete instance name.
|
827 | a8083063 | Iustin Pop |
|
828 | a8083063 | Iustin Pop | """
|
829 | a8083063 | Iustin Pop | return utils.MatchNameComponent(short_name,
|
830 | a8083063 | Iustin Pop | self._config_data.nodes.keys())
|
831 | a8083063 | Iustin Pop | |
832 | f78ede4e | Guido Trotter | def _UnlockedGetNodeInfo(self, node_name): |
833 | a8083063 | Iustin Pop | """Get the configuration of a node, as stored in the config.
|
834 | a8083063 | Iustin Pop |
|
835 | c41eea6e | Iustin Pop | This function is for internal use, when the config lock is already
|
836 | c41eea6e | Iustin Pop | held.
|
837 | f78ede4e | Guido Trotter |
|
838 | c41eea6e | Iustin Pop | @param node_name: the node name, e.g. I{node1.example.com}
|
839 | a8083063 | Iustin Pop |
|
840 | c41eea6e | Iustin Pop | @rtype: L{objects.Node}
|
841 | c41eea6e | Iustin Pop | @return: the node object
|
842 | a8083063 | Iustin Pop |
|
843 | a8083063 | Iustin Pop | """
|
844 | a8083063 | Iustin Pop | if node_name not in self._config_data.nodes: |
845 | a8083063 | Iustin Pop | return None |
846 | a8083063 | Iustin Pop | |
847 | a8083063 | Iustin Pop | return self._config_data.nodes[node_name] |
848 | a8083063 | Iustin Pop | |
849 | f78ede4e | Guido Trotter | |
850 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
851 | f78ede4e | Guido Trotter | def GetNodeInfo(self, node_name): |
852 | f78ede4e | Guido Trotter | """Get the configuration of a node, as stored in the config.
|
853 | f78ede4e | Guido Trotter |
|
854 | c41eea6e | Iustin Pop | This is just a locked wrapper over L{_UnlockedGetNodeInfo}.
|
855 | f78ede4e | Guido Trotter |
|
856 | c41eea6e | Iustin Pop | @param node_name: the node name, e.g. I{node1.example.com}
|
857 | c41eea6e | Iustin Pop |
|
858 | c41eea6e | Iustin Pop | @rtype: L{objects.Node}
|
859 | c41eea6e | Iustin Pop | @return: the node object
|
860 | f78ede4e | Guido Trotter |
|
861 | f78ede4e | Guido Trotter | """
|
862 | f78ede4e | Guido Trotter | return self._UnlockedGetNodeInfo(node_name) |
863 | f78ede4e | Guido Trotter | |
864 | f78ede4e | Guido Trotter | def _UnlockedGetNodeList(self): |
865 | a8083063 | Iustin Pop | """Return the list of nodes which are in the configuration.
|
866 | a8083063 | Iustin Pop |
|
867 | c41eea6e | Iustin Pop | This function is for internal use, when the config lock is already
|
868 | c41eea6e | Iustin Pop | held.
|
869 | c41eea6e | Iustin Pop |
|
870 | c41eea6e | Iustin Pop | @rtype: list
|
871 | f78ede4e | Guido Trotter |
|
872 | a8083063 | Iustin Pop | """
|
873 | a8083063 | Iustin Pop | return self._config_data.nodes.keys() |
874 | a8083063 | Iustin Pop | |
875 | f78ede4e | Guido Trotter | |
876 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
877 | f78ede4e | Guido Trotter | def GetNodeList(self): |
878 | f78ede4e | Guido Trotter | """Return the list of nodes which are in the configuration.
|
879 | f78ede4e | Guido Trotter |
|
880 | f78ede4e | Guido Trotter | """
|
881 | f78ede4e | Guido Trotter | return self._UnlockedGetNodeList() |
882 | f78ede4e | Guido Trotter | |
883 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
884 | 94a02bb5 | Iustin Pop | def GetOnlineNodeList(self): |
885 | 94a02bb5 | Iustin Pop | """Return the list of nodes which are online.
|
886 | 94a02bb5 | Iustin Pop |
|
887 | 94a02bb5 | Iustin Pop | """
|
888 | 94a02bb5 | Iustin Pop | all_nodes = [self._UnlockedGetNodeInfo(node)
|
889 | 94a02bb5 | Iustin Pop | for node in self._UnlockedGetNodeList()] |
890 | 94a02bb5 | Iustin Pop | return [node.name for node in all_nodes if not node.offline] |
891 | 94a02bb5 | Iustin Pop | |
892 | 94a02bb5 | Iustin Pop | @locking.ssynchronized(_config_lock, shared=1) |
893 | d65e5776 | Iustin Pop | def GetAllNodesInfo(self): |
894 | d65e5776 | Iustin Pop | """Get the configuration of all nodes.
|
895 | d65e5776 | Iustin Pop |
|
896 | d65e5776 | Iustin Pop | @rtype: dict
|
897 | ec0292f1 | Iustin Pop | @return: dict of (node, node_info), where node_info is what
|
898 | d65e5776 | Iustin Pop | would GetNodeInfo return for the node
|
899 | d65e5776 | Iustin Pop |
|
900 | d65e5776 | Iustin Pop | """
|
901 | d65e5776 | Iustin Pop | my_dict = dict([(node, self._UnlockedGetNodeInfo(node)) |
902 | d65e5776 | Iustin Pop | for node in self._UnlockedGetNodeList()]) |
903 | d65e5776 | Iustin Pop | return my_dict
|
904 | d65e5776 | Iustin Pop | |
905 | ec0292f1 | Iustin Pop | def _UnlockedGetMasterCandidateStats(self): |
906 | ec0292f1 | Iustin Pop | """Get the number of current and maximum desired and possible candidates.
|
907 | ec0292f1 | Iustin Pop |
|
908 | ec0292f1 | Iustin Pop | @rtype: tuple
|
909 | ec0292f1 | Iustin Pop | @return: tuple of (current, desired and possible)
|
910 | ec0292f1 | Iustin Pop |
|
911 | ec0292f1 | Iustin Pop | """
|
912 | ec0292f1 | Iustin Pop | mc_now = mc_max = 0
|
913 | ec0292f1 | Iustin Pop | for node in self._config_data.nodes.itervalues(): |
914 | 5bf07049 | Iustin Pop | if not (node.offline or node.drained): |
915 | ec0292f1 | Iustin Pop | mc_max += 1
|
916 | ec0292f1 | Iustin Pop | if node.master_candidate:
|
917 | ec0292f1 | Iustin Pop | mc_now += 1
|
918 | ec0292f1 | Iustin Pop | mc_max = min(mc_max, self._config_data.cluster.candidate_pool_size) |
919 | ec0292f1 | Iustin Pop | return (mc_now, mc_max)
|
920 | ec0292f1 | Iustin Pop | |
921 | ec0292f1 | Iustin Pop | @locking.ssynchronized(_config_lock, shared=1) |
922 | ec0292f1 | Iustin Pop | def GetMasterCandidateStats(self): |
923 | ec0292f1 | Iustin Pop | """Get the number of current and maximum possible candidates.
|
924 | ec0292f1 | Iustin Pop |
|
925 | ec0292f1 | Iustin Pop | This is just a wrapper over L{_UnlockedGetMasterCandidateStats}.
|
926 | ec0292f1 | Iustin Pop |
|
927 | ec0292f1 | Iustin Pop | @rtype: tuple
|
928 | ec0292f1 | Iustin Pop | @return: tuple of (current, max)
|
929 | ec0292f1 | Iustin Pop |
|
930 | ec0292f1 | Iustin Pop | """
|
931 | ec0292f1 | Iustin Pop | return self._UnlockedGetMasterCandidateStats() |
932 | ec0292f1 | Iustin Pop | |
933 | ec0292f1 | Iustin Pop | @locking.ssynchronized(_config_lock)
|
934 | ec0292f1 | Iustin Pop | def MaintainCandidatePool(self): |
935 | ec0292f1 | Iustin Pop | """Try to grow the candidate pool to the desired size.
|
936 | ec0292f1 | Iustin Pop |
|
937 | ec0292f1 | Iustin Pop | @rtype: list
|
938 | ee513a66 | Iustin Pop | @return: list with the adjusted nodes (L{objects.Node} instances)
|
939 | ec0292f1 | Iustin Pop |
|
940 | ec0292f1 | Iustin Pop | """
|
941 | ec0292f1 | Iustin Pop | mc_now, mc_max = self._UnlockedGetMasterCandidateStats()
|
942 | ec0292f1 | Iustin Pop | mod_list = [] |
943 | ec0292f1 | Iustin Pop | if mc_now < mc_max:
|
944 | ec0292f1 | Iustin Pop | node_list = self._config_data.nodes.keys()
|
945 | ec0292f1 | Iustin Pop | random.shuffle(node_list) |
946 | ec0292f1 | Iustin Pop | for name in node_list: |
947 | ec0292f1 | Iustin Pop | if mc_now >= mc_max:
|
948 | ec0292f1 | Iustin Pop | break
|
949 | ec0292f1 | Iustin Pop | node = self._config_data.nodes[name]
|
950 | 5bf07049 | Iustin Pop | if node.master_candidate or node.offline or node.drained: |
951 | ec0292f1 | Iustin Pop | continue
|
952 | ee513a66 | Iustin Pop | mod_list.append(node) |
953 | ec0292f1 | Iustin Pop | node.master_candidate = True
|
954 | ec0292f1 | Iustin Pop | node.serial_no += 1
|
955 | ec0292f1 | Iustin Pop | mc_now += 1
|
956 | ec0292f1 | Iustin Pop | if mc_now != mc_max:
|
957 | ec0292f1 | Iustin Pop | # this should not happen
|
958 | ec0292f1 | Iustin Pop | logging.warning("Warning: MaintainCandidatePool didn't manage to"
|
959 | ec0292f1 | Iustin Pop | " fill the candidate pool (%d/%d)", mc_now, mc_max)
|
960 | ec0292f1 | Iustin Pop | if mod_list:
|
961 | ec0292f1 | Iustin Pop | self._config_data.cluster.serial_no += 1 |
962 | ec0292f1 | Iustin Pop | self._WriteConfig()
|
963 | ec0292f1 | Iustin Pop | |
964 | ec0292f1 | Iustin Pop | return mod_list
|
965 | ec0292f1 | Iustin Pop | |
966 | a8083063 | Iustin Pop | def _BumpSerialNo(self): |
967 | a8083063 | Iustin Pop | """Bump up the serial number of the config.
|
968 | a8083063 | Iustin Pop |
|
969 | a8083063 | Iustin Pop | """
|
970 | 9d38c6e1 | Iustin Pop | self._config_data.serial_no += 1 |
971 | a8083063 | Iustin Pop | |
972 | a8083063 | Iustin Pop | def _OpenConfig(self): |
973 | a8083063 | Iustin Pop | """Read the config data from disk.
|
974 | a8083063 | Iustin Pop |
|
975 | a8083063 | Iustin Pop | """
|
976 | a8083063 | Iustin Pop | f = open(self._cfg_file, 'r') |
977 | a8083063 | Iustin Pop | try:
|
978 | a8083063 | Iustin Pop | try:
|
979 | 8d14b30d | Iustin Pop | data = objects.ConfigData.FromDict(serializer.Load(f.read())) |
980 | a8083063 | Iustin Pop | except Exception, err: |
981 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError(err)
|
982 | a8083063 | Iustin Pop | finally:
|
983 | a8083063 | Iustin Pop | f.close() |
984 | 5b263ed7 | Michael Hanselmann | |
985 | 5b263ed7 | Michael Hanselmann | # Make sure the configuration has the right version
|
986 | 5b263ed7 | Michael Hanselmann | _ValidateConfig(data) |
987 | 5b263ed7 | Michael Hanselmann | |
988 | a8083063 | Iustin Pop | if (not hasattr(data, 'cluster') or |
989 | 243cdbcc | Michael Hanselmann | not hasattr(data.cluster, 'rsahostkeypub')): |
990 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Incomplete configuration" |
991 | 243cdbcc | Michael Hanselmann | " (missing cluster.rsahostkeypub)")
|
992 | a8083063 | Iustin Pop | self._config_data = data
|
993 | 3c7f6c44 | Iustin Pop | # reset the last serial as -1 so that the next write will cause
|
994 | 0779e3aa | Iustin Pop | # ssconf update
|
995 | 0779e3aa | Iustin Pop | self._last_cluster_serial = -1 |
996 | a8083063 | Iustin Pop | |
997 | a8083063 | Iustin Pop | def _DistributeConfig(self): |
998 | a8083063 | Iustin Pop | """Distribute the configuration to the other nodes.
|
999 | a8083063 | Iustin Pop |
|
1000 | a8083063 | Iustin Pop | Currently, this only copies the configuration file. In the future,
|
1001 | a8083063 | Iustin Pop | it could be used to encapsulate the 2/3-phase update mechanism.
|
1002 | a8083063 | Iustin Pop |
|
1003 | a8083063 | Iustin Pop | """
|
1004 | a8083063 | Iustin Pop | if self._offline: |
1005 | a8083063 | Iustin Pop | return True |
1006 | a8083063 | Iustin Pop | bad = False
|
1007 | a8083063 | Iustin Pop | |
1008 | 6a5b8b4b | Iustin Pop | node_list = [] |
1009 | 6a5b8b4b | Iustin Pop | addr_list = [] |
1010 | 6a5b8b4b | Iustin Pop | myhostname = self._my_hostname
|
1011 | 6b294c53 | Iustin Pop | # we can skip checking whether _UnlockedGetNodeInfo returns None
|
1012 | 6b294c53 | Iustin Pop | # since the node list comes from _UnlocketGetNodeList, and we are
|
1013 | 6b294c53 | Iustin Pop | # called with the lock held, so no modifications should take place
|
1014 | 6b294c53 | Iustin Pop | # in between
|
1015 | 6a5b8b4b | Iustin Pop | for node_name in self._UnlockedGetNodeList(): |
1016 | 6a5b8b4b | Iustin Pop | if node_name == myhostname:
|
1017 | 6a5b8b4b | Iustin Pop | continue
|
1018 | 6a5b8b4b | Iustin Pop | node_info = self._UnlockedGetNodeInfo(node_name)
|
1019 | 6a5b8b4b | Iustin Pop | if not node_info.master_candidate: |
1020 | 6a5b8b4b | Iustin Pop | continue
|
1021 | 6a5b8b4b | Iustin Pop | node_list.append(node_info.name) |
1022 | 6a5b8b4b | Iustin Pop | addr_list.append(node_info.primary_ip) |
1023 | 6b294c53 | Iustin Pop | |
1024 | 6a5b8b4b | Iustin Pop | result = rpc.RpcRunner.call_upload_file(node_list, self._cfg_file,
|
1025 | 6a5b8b4b | Iustin Pop | address_list=addr_list) |
1026 | 6a5b8b4b | Iustin Pop | for node in node_list: |
1027 | a8083063 | Iustin Pop | if not result[node]: |
1028 | 74a48621 | Iustin Pop | logging.error("copy of file %s to node %s failed",
|
1029 | 74a48621 | Iustin Pop | self._cfg_file, node)
|
1030 | a8083063 | Iustin Pop | bad = True
|
1031 | a8083063 | Iustin Pop | return not bad |
1032 | a8083063 | Iustin Pop | |
1033 | a8083063 | Iustin Pop | def _WriteConfig(self, destination=None): |
1034 | a8083063 | Iustin Pop | """Write the configuration data to persistent storage.
|
1035 | a8083063 | Iustin Pop |
|
1036 | a8083063 | Iustin Pop | """
|
1037 | 4a89c54a | Iustin Pop | config_errors = self._UnlockedVerifyConfig()
|
1038 | 4a89c54a | Iustin Pop | if config_errors:
|
1039 | 4a89c54a | Iustin Pop | raise errors.ConfigurationError("Configuration data is not" |
1040 | 4a89c54a | Iustin Pop | " consistent: %s" %
|
1041 | 4a89c54a | Iustin Pop | (", ".join(config_errors)))
|
1042 | a8083063 | Iustin Pop | if destination is None: |
1043 | a8083063 | Iustin Pop | destination = self._cfg_file
|
1044 | a8083063 | Iustin Pop | self._BumpSerialNo()
|
1045 | 8d14b30d | Iustin Pop | txt = serializer.Dump(self._config_data.ToDict())
|
1046 | a8083063 | Iustin Pop | dir_name, file_name = os.path.split(destination) |
1047 | a8083063 | Iustin Pop | fd, name = tempfile.mkstemp('.newconfig', file_name, dir_name)
|
1048 | a8083063 | Iustin Pop | f = os.fdopen(fd, 'w')
|
1049 | a8083063 | Iustin Pop | try:
|
1050 | 8d14b30d | Iustin Pop | f.write(txt) |
1051 | a8083063 | Iustin Pop | os.fsync(f.fileno()) |
1052 | a8083063 | Iustin Pop | finally:
|
1053 | a8083063 | Iustin Pop | f.close() |
1054 | a8083063 | Iustin Pop | # we don't need to do os.close(fd) as f.close() did it
|
1055 | a8083063 | Iustin Pop | os.rename(name, destination) |
1056 | 14e15659 | Iustin Pop | self.write_count += 1 |
1057 | 3d3a04bc | Iustin Pop | |
1058 | f56618e0 | Iustin Pop | # and redistribute the config file to master candidates
|
1059 | a8083063 | Iustin Pop | self._DistributeConfig()
|
1060 | a8083063 | Iustin Pop | |
1061 | 54d1a06e | Michael Hanselmann | # Write ssconf files on all nodes (including locally)
|
1062 | 0779e3aa | Iustin Pop | if self._last_cluster_serial < self._config_data.cluster.serial_no: |
1063 | d9a855f1 | Michael Hanselmann | if not self._offline: |
1064 | 03d1dba2 | Michael Hanselmann | rpc.RpcRunner.call_write_ssconf_files(self._UnlockedGetNodeList(),
|
1065 | 03d1dba2 | Michael Hanselmann | self._UnlockedGetSsconfValues())
|
1066 | 0779e3aa | Iustin Pop | self._last_cluster_serial = self._config_data.cluster.serial_no |
1067 | 54d1a06e | Michael Hanselmann | |
1068 | 03d1dba2 | Michael Hanselmann | def _UnlockedGetSsconfValues(self): |
1069 | 054596f0 | Iustin Pop | """Return the values needed by ssconf.
|
1070 | 054596f0 | Iustin Pop |
|
1071 | 054596f0 | Iustin Pop | @rtype: dict
|
1072 | 054596f0 | Iustin Pop | @return: a dictionary with keys the ssconf names and values their
|
1073 | 054596f0 | Iustin Pop | associated value
|
1074 | 054596f0 | Iustin Pop |
|
1075 | 054596f0 | Iustin Pop | """
|
1076 | a3316e4a | Iustin Pop | fn = "\n".join
|
1077 | 81a49123 | Iustin Pop | instance_names = utils.NiceSort(self._UnlockedGetInstanceList())
|
1078 | a3316e4a | Iustin Pop | node_names = utils.NiceSort(self._UnlockedGetNodeList())
|
1079 | a3316e4a | Iustin Pop | node_info = [self._UnlockedGetNodeInfo(name) for name in node_names] |
1080 | a3316e4a | Iustin Pop | |
1081 | 81a49123 | Iustin Pop | instance_data = fn(instance_names) |
1082 | a3316e4a | Iustin Pop | off_data = fn(node.name for node in node_info if node.offline) |
1083 | 81a49123 | Iustin Pop | on_data = fn(node.name for node in node_info if not node.offline) |
1084 | a3316e4a | Iustin Pop | mc_data = fn(node.name for node in node_info if node.master_candidate) |
1085 | a3316e4a | Iustin Pop | node_data = fn(node_names) |
1086 | f56618e0 | Iustin Pop | |
1087 | 054596f0 | Iustin Pop | cluster = self._config_data.cluster
|
1088 | 03d1dba2 | Michael Hanselmann | return {
|
1089 | 054596f0 | Iustin Pop | constants.SS_CLUSTER_NAME: cluster.cluster_name, |
1090 | 054596f0 | Iustin Pop | constants.SS_FILE_STORAGE_DIR: cluster.file_storage_dir, |
1091 | a3316e4a | Iustin Pop | constants.SS_MASTER_CANDIDATES: mc_data, |
1092 | 054596f0 | Iustin Pop | constants.SS_MASTER_IP: cluster.master_ip, |
1093 | 054596f0 | Iustin Pop | constants.SS_MASTER_NETDEV: cluster.master_netdev, |
1094 | 054596f0 | Iustin Pop | constants.SS_MASTER_NODE: cluster.master_node, |
1095 | a3316e4a | Iustin Pop | constants.SS_NODE_LIST: node_data, |
1096 | a3316e4a | Iustin Pop | constants.SS_OFFLINE_NODES: off_data, |
1097 | 81a49123 | Iustin Pop | constants.SS_ONLINE_NODES: on_data, |
1098 | 81a49123 | Iustin Pop | constants.SS_INSTANCE_LIST: instance_data, |
1099 | 8a113c7a | Iustin Pop | constants.SS_RELEASE_VERSION: constants.RELEASE_VERSION, |
1100 | 03d1dba2 | Michael Hanselmann | } |
1101 | 03d1dba2 | Michael Hanselmann | |
1102 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
1103 | f6bd6e98 | Michael Hanselmann | def InitConfig(self, version, cluster_config, master_node_config): |
1104 | a8083063 | Iustin Pop | """Create the initial cluster configuration.
|
1105 | a8083063 | Iustin Pop |
|
1106 | a8083063 | Iustin Pop | It will contain the current node, which will also be the master
|
1107 | b9eeeb02 | Michael Hanselmann | node, and no instances.
|
1108 | a8083063 | Iustin Pop |
|
1109 | f6bd6e98 | Michael Hanselmann | @type version: int
|
1110 | f6bd6e98 | Michael Hanselmann | @param version: Configuration version
|
1111 | b9eeeb02 | Michael Hanselmann | @type cluster_config: objects.Cluster
|
1112 | b9eeeb02 | Michael Hanselmann | @param cluster_config: Cluster configuration
|
1113 | b9eeeb02 | Michael Hanselmann | @type master_node_config: objects.Node
|
1114 | b9eeeb02 | Michael Hanselmann | @param master_node_config: Master node configuration
|
1115 | b9eeeb02 | Michael Hanselmann |
|
1116 | b9eeeb02 | Michael Hanselmann | """
|
1117 | b9eeeb02 | Michael Hanselmann | nodes = { |
1118 | b9eeeb02 | Michael Hanselmann | master_node_config.name: master_node_config, |
1119 | b9eeeb02 | Michael Hanselmann | } |
1120 | b9eeeb02 | Michael Hanselmann | |
1121 | f6bd6e98 | Michael Hanselmann | self._config_data = objects.ConfigData(version=version,
|
1122 | f6bd6e98 | Michael Hanselmann | cluster=cluster_config, |
1123 | b9eeeb02 | Michael Hanselmann | nodes=nodes, |
1124 | a8083063 | Iustin Pop | instances={}, |
1125 | 9d38c6e1 | Iustin Pop | serial_no=1)
|
1126 | a8083063 | Iustin Pop | self._WriteConfig()
|
1127 | a8083063 | Iustin Pop | |
1128 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
1129 | a8083063 | Iustin Pop | def GetVGName(self): |
1130 | a8083063 | Iustin Pop | """Return the volume group name.
|
1131 | a8083063 | Iustin Pop |
|
1132 | a8083063 | Iustin Pop | """
|
1133 | a8083063 | Iustin Pop | return self._config_data.cluster.volume_group_name |
1134 | a8083063 | Iustin Pop | |
1135 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
1136 | 89ff8e15 | Manuel Franceschini | def SetVGName(self, vg_name): |
1137 | 89ff8e15 | Manuel Franceschini | """Set the volume group name.
|
1138 | 89ff8e15 | Manuel Franceschini |
|
1139 | 89ff8e15 | Manuel Franceschini | """
|
1140 | 2d4011cd | Manuel Franceschini | self._config_data.cluster.volume_group_name = vg_name
|
1141 | b9f72b4e | Iustin Pop | self._config_data.cluster.serial_no += 1 |
1142 | 89ff8e15 | Manuel Franceschini | self._WriteConfig()
|
1143 | 89ff8e15 | Manuel Franceschini | |
1144 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
1145 | a8083063 | Iustin Pop | def GetDefBridge(self): |
1146 | a8083063 | Iustin Pop | """Return the default bridge.
|
1147 | a8083063 | Iustin Pop |
|
1148 | a8083063 | Iustin Pop | """
|
1149 | a8083063 | Iustin Pop | return self._config_data.cluster.default_bridge |
1150 | a8083063 | Iustin Pop | |
1151 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
1152 | a8083063 | Iustin Pop | def GetMACPrefix(self): |
1153 | a8083063 | Iustin Pop | """Return the mac prefix.
|
1154 | a8083063 | Iustin Pop |
|
1155 | a8083063 | Iustin Pop | """
|
1156 | a8083063 | Iustin Pop | return self._config_data.cluster.mac_prefix |
1157 | 62779dd0 | Iustin Pop | |
1158 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock, shared=1) |
1159 | 62779dd0 | Iustin Pop | def GetClusterInfo(self): |
1160 | 62779dd0 | Iustin Pop | """Returns informations about the cluster
|
1161 | 62779dd0 | Iustin Pop |
|
1162 | c41eea6e | Iustin Pop | @rtype: L{objects.Cluster}
|
1163 | c41eea6e | Iustin Pop | @return: the cluster object
|
1164 | 62779dd0 | Iustin Pop |
|
1165 | 62779dd0 | Iustin Pop | """
|
1166 | 62779dd0 | Iustin Pop | return self._config_data.cluster |
1167 | e00fb268 | Iustin Pop | |
1168 | f78ede4e | Guido Trotter | @locking.ssynchronized(_config_lock)
|
1169 | e00fb268 | Iustin Pop | def Update(self, target): |
1170 | e00fb268 | Iustin Pop | """Notify function to be called after updates.
|
1171 | e00fb268 | Iustin Pop |
|
1172 | e00fb268 | Iustin Pop | This function must be called when an object (as returned by
|
1173 | e00fb268 | Iustin Pop | GetInstanceInfo, GetNodeInfo, GetCluster) has been updated and the
|
1174 | e00fb268 | Iustin Pop | caller wants the modifications saved to the backing store. Note
|
1175 | e00fb268 | Iustin Pop | that all modified objects will be saved, but the target argument
|
1176 | e00fb268 | Iustin Pop | is the one the caller wants to ensure that it's saved.
|
1177 | e00fb268 | Iustin Pop |
|
1178 | c41eea6e | Iustin Pop | @param target: an instance of either L{objects.Cluster},
|
1179 | c41eea6e | Iustin Pop | L{objects.Node} or L{objects.Instance} which is existing in
|
1180 | c41eea6e | Iustin Pop | the cluster
|
1181 | c41eea6e | Iustin Pop |
|
1182 | e00fb268 | Iustin Pop | """
|
1183 | e00fb268 | Iustin Pop | if self._config_data is None: |
1184 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Configuration file not read," |
1185 | 3ecf6786 | Iustin Pop | " cannot save.")
|
1186 | f34901f8 | Iustin Pop | update_serial = False
|
1187 | e00fb268 | Iustin Pop | if isinstance(target, objects.Cluster): |
1188 | e00fb268 | Iustin Pop | test = target == self._config_data.cluster
|
1189 | e00fb268 | Iustin Pop | elif isinstance(target, objects.Node): |
1190 | e00fb268 | Iustin Pop | test = target in self._config_data.nodes.values() |
1191 | f34901f8 | Iustin Pop | update_serial = True
|
1192 | e00fb268 | Iustin Pop | elif isinstance(target, objects.Instance): |
1193 | e00fb268 | Iustin Pop | test = target in self._config_data.instances.values() |
1194 | e00fb268 | Iustin Pop | else:
|
1195 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Invalid object type (%s) passed to" |
1196 | 3ecf6786 | Iustin Pop | " ConfigWriter.Update" % type(target)) |
1197 | e00fb268 | Iustin Pop | if not test: |
1198 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("Configuration updated since object" |
1199 | 3ecf6786 | Iustin Pop | " has been read or unknown object")
|
1200 | f34901f8 | Iustin Pop | target.serial_no += 1
|
1201 | f34901f8 | Iustin Pop | |
1202 | cff4c037 | Iustin Pop | if update_serial:
|
1203 | f34901f8 | Iustin Pop | # for node updates, we need to increase the cluster serial too
|
1204 | f34901f8 | Iustin Pop | self._config_data.cluster.serial_no += 1 |
1205 | b989e85d | Iustin Pop | |
1206 | 61cf6b5e | Iustin Pop | if isinstance(target, objects.Instance): |
1207 | 61cf6b5e | Iustin Pop | self._UnlockedReleaseDRBDMinors(target.name)
|
1208 | 61cf6b5e | Iustin Pop | |
1209 | e00fb268 | Iustin Pop | self._WriteConfig() |