root / lib / mcpu.py @ 8c96d01f
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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 | """Module implementing the logic behind the cluster operations
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23 | a8083063 | Iustin Pop |
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24 | a8083063 | Iustin Pop | This module implements the logic for doing operations in the cluster. There
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25 | a8083063 | Iustin Pop | are two kinds of classes defined:
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26 | a8083063 | Iustin Pop | - logical units, which know how to deal with their specific opcode only
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27 | a8083063 | Iustin Pop | - the processor, which dispatches the opcodes to their logical units
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28 | a8083063 | Iustin Pop |
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29 | a8083063 | Iustin Pop | """
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30 | a8083063 | Iustin Pop | |
31 | a5eb7789 | Iustin Pop | import logging |
32 | a8083063 | Iustin Pop | |
33 | a8083063 | Iustin Pop | from ganeti import opcodes |
34 | a8083063 | Iustin Pop | from ganeti import constants |
35 | a8083063 | Iustin Pop | from ganeti import errors |
36 | a8083063 | Iustin Pop | from ganeti import rpc |
37 | a8083063 | Iustin Pop | from ganeti import cmdlib |
38 | 04864530 | Guido Trotter | from ganeti import locking |
39 | a8083063 | Iustin Pop | |
40 | 7c0d6283 | Michael Hanselmann | |
41 | a8083063 | Iustin Pop | class Processor(object): |
42 | a8083063 | Iustin Pop | """Object which runs OpCodes"""
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43 | a8083063 | Iustin Pop | DISPATCH_TABLE = { |
44 | a8083063 | Iustin Pop | # Cluster
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45 | a8083063 | Iustin Pop | opcodes.OpDestroyCluster: cmdlib.LUDestroyCluster, |
46 | a8083063 | Iustin Pop | opcodes.OpQueryClusterInfo: cmdlib.LUQueryClusterInfo, |
47 | a8083063 | Iustin Pop | opcodes.OpVerifyCluster: cmdlib.LUVerifyCluster, |
48 | ae5849b5 | Michael Hanselmann | opcodes.OpQueryConfigValues: cmdlib.LUQueryConfigValues, |
49 | 07bd8a51 | Iustin Pop | opcodes.OpRenameCluster: cmdlib.LURenameCluster, |
50 | f4d4e184 | Iustin Pop | opcodes.OpVerifyDisks: cmdlib.LUVerifyDisks, |
51 | 0cc05d44 | Manuel Franceschini | opcodes.OpSetClusterParams: cmdlib.LUSetClusterParams, |
52 | afee0879 | Iustin Pop | opcodes.OpRedistributeConfig: cmdlib.LURedistributeConfig, |
53 | a8083063 | Iustin Pop | # node lu
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54 | a8083063 | Iustin Pop | opcodes.OpAddNode: cmdlib.LUAddNode, |
55 | a8083063 | Iustin Pop | opcodes.OpQueryNodes: cmdlib.LUQueryNodes, |
56 | dcb93971 | Michael Hanselmann | opcodes.OpQueryNodeVolumes: cmdlib.LUQueryNodeVolumes, |
57 | a8083063 | Iustin Pop | opcodes.OpRemoveNode: cmdlib.LURemoveNode, |
58 | b31c8676 | Iustin Pop | opcodes.OpSetNodeParams: cmdlib.LUSetNodeParams, |
59 | f5118ade | Iustin Pop | opcodes.OpPowercycleNode: cmdlib.LUPowercycleNode, |
60 | 7ffc5a86 | Michael Hanselmann | opcodes.OpEvacuateNode: cmdlib.LUEvacuateNode, |
61 | a8083063 | Iustin Pop | # instance lu
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62 | a8083063 | Iustin Pop | opcodes.OpCreateInstance: cmdlib.LUCreateInstance, |
63 | fe7b0351 | Michael Hanselmann | opcodes.OpReinstallInstance: cmdlib.LUReinstallInstance, |
64 | a8083063 | Iustin Pop | opcodes.OpRemoveInstance: cmdlib.LURemoveInstance, |
65 | decd5f45 | Iustin Pop | opcodes.OpRenameInstance: cmdlib.LURenameInstance, |
66 | a8083063 | Iustin Pop | opcodes.OpActivateInstanceDisks: cmdlib.LUActivateInstanceDisks, |
67 | a8083063 | Iustin Pop | opcodes.OpShutdownInstance: cmdlib.LUShutdownInstance, |
68 | a8083063 | Iustin Pop | opcodes.OpStartupInstance: cmdlib.LUStartupInstance, |
69 | bf6929a2 | Alexander Schreiber | opcodes.OpRebootInstance: cmdlib.LURebootInstance, |
70 | a8083063 | Iustin Pop | opcodes.OpDeactivateInstanceDisks: cmdlib.LUDeactivateInstanceDisks, |
71 | a8083063 | Iustin Pop | opcodes.OpReplaceDisks: cmdlib.LUReplaceDisks, |
72 | a8083063 | Iustin Pop | opcodes.OpFailoverInstance: cmdlib.LUFailoverInstance, |
73 | 53c776b5 | Iustin Pop | opcodes.OpMigrateInstance: cmdlib.LUMigrateInstance, |
74 | a8083063 | Iustin Pop | opcodes.OpConnectConsole: cmdlib.LUConnectConsole, |
75 | a8083063 | Iustin Pop | opcodes.OpQueryInstances: cmdlib.LUQueryInstances, |
76 | a8083063 | Iustin Pop | opcodes.OpQueryInstanceData: cmdlib.LUQueryInstanceData, |
77 | 7767bbf5 | Manuel Franceschini | opcodes.OpSetInstanceParams: cmdlib.LUSetInstanceParams, |
78 | 8729e0d7 | Iustin Pop | opcodes.OpGrowDisk: cmdlib.LUGrowDisk, |
79 | a8083063 | Iustin Pop | # os lu
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80 | a8083063 | Iustin Pop | opcodes.OpDiagnoseOS: cmdlib.LUDiagnoseOS, |
81 | a8083063 | Iustin Pop | # exports lu
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82 | a8083063 | Iustin Pop | opcodes.OpQueryExports: cmdlib.LUQueryExports, |
83 | a8083063 | Iustin Pop | opcodes.OpExportInstance: cmdlib.LUExportInstance, |
84 | 9ac99fda | Guido Trotter | opcodes.OpRemoveExport: cmdlib.LURemoveExport, |
85 | 5c947f38 | Iustin Pop | # tags lu
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86 | 5c947f38 | Iustin Pop | opcodes.OpGetTags: cmdlib.LUGetTags, |
87 | 73415719 | Iustin Pop | opcodes.OpSearchTags: cmdlib.LUSearchTags, |
88 | f27302fa | Iustin Pop | opcodes.OpAddTags: cmdlib.LUAddTags, |
89 | f27302fa | Iustin Pop | opcodes.OpDelTags: cmdlib.LUDelTags, |
90 | 06009e27 | Iustin Pop | # test lu
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91 | 06009e27 | Iustin Pop | opcodes.OpTestDelay: cmdlib.LUTestDelay, |
92 | d61df03e | Iustin Pop | opcodes.OpTestAllocator: cmdlib.LUTestAllocator, |
93 | a8083063 | Iustin Pop | } |
94 | a8083063 | Iustin Pop | |
95 | f1048938 | Iustin Pop | def __init__(self, context): |
96 | a8083063 | Iustin Pop | """Constructor for Processor
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97 | a8083063 | Iustin Pop |
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98 | 1a8c0ce1 | Iustin Pop | Args:
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99 | 1a8c0ce1 | Iustin Pop | - feedback_fn: the feedback function (taking one string) to be run when
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100 | 1a8c0ce1 | Iustin Pop | interesting events are happening
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101 | a8083063 | Iustin Pop | """
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102 | 1c901d13 | Guido Trotter | self.context = context
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103 | f1048938 | Iustin Pop | self._feedback_fn = None |
104 | 04864530 | Guido Trotter | self.exclusive_BGL = False |
105 | 72737a7f | Iustin Pop | self.rpc = rpc.RpcRunner(context.cfg)
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106 | a8083063 | Iustin Pop | |
107 | 36c381d7 | Guido Trotter | def _ExecLU(self, lu): |
108 | 36c381d7 | Guido Trotter | """Logical Unit execution sequence.
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109 | 36c381d7 | Guido Trotter |
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110 | 36c381d7 | Guido Trotter | """
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111 | 36c381d7 | Guido Trotter | write_count = self.context.cfg.write_count
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112 | 36c381d7 | Guido Trotter | lu.CheckPrereq() |
113 | 72737a7f | Iustin Pop | hm = HooksMaster(self.rpc.call_hooks_runner, self, lu) |
114 | 36c381d7 | Guido Trotter | h_results = hm.RunPhase(constants.HOOKS_PHASE_PRE) |
115 | 36c381d7 | Guido Trotter | lu.HooksCallBack(constants.HOOKS_PHASE_PRE, h_results, |
116 | 36c381d7 | Guido Trotter | self._feedback_fn, None) |
117 | 20777413 | Iustin Pop | |
118 | 20777413 | Iustin Pop | if getattr(lu.op, "dry_run", False): |
119 | 20777413 | Iustin Pop | # in this mode, no post-hooks are run, and the config is not
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120 | 20777413 | Iustin Pop | # written (as it might have been modified by another LU, and we
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121 | 20777413 | Iustin Pop | # shouldn't do writeout on behalf of other threads
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122 | 20777413 | Iustin Pop | self.LogInfo("dry-run mode requested, not actually executing" |
123 | 20777413 | Iustin Pop | " the operation")
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124 | 20777413 | Iustin Pop | return lu.dry_run_result
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125 | 20777413 | Iustin Pop | |
126 | 36c381d7 | Guido Trotter | try:
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127 | 36c381d7 | Guido Trotter | result = lu.Exec(self._feedback_fn)
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128 | 36c381d7 | Guido Trotter | h_results = hm.RunPhase(constants.HOOKS_PHASE_POST) |
129 | 36c381d7 | Guido Trotter | result = lu.HooksCallBack(constants.HOOKS_PHASE_POST, h_results, |
130 | 36c381d7 | Guido Trotter | self._feedback_fn, result)
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131 | 36c381d7 | Guido Trotter | finally:
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132 | 36c381d7 | Guido Trotter | # FIXME: This needs locks if not lu_class.REQ_BGL
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133 | 36c381d7 | Guido Trotter | if write_count != self.context.cfg.write_count: |
134 | 36c381d7 | Guido Trotter | hm.RunConfigUpdate() |
135 | 36c381d7 | Guido Trotter | |
136 | 36c381d7 | Guido Trotter | return result
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137 | 36c381d7 | Guido Trotter | |
138 | 68adfdb2 | Guido Trotter | def _LockAndExecLU(self, lu, level): |
139 | 68adfdb2 | Guido Trotter | """Execute a Logical Unit, with the needed locks.
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140 | 68adfdb2 | Guido Trotter |
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141 | 68adfdb2 | Guido Trotter | This is a recursive function that starts locking the given level, and
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142 | 68adfdb2 | Guido Trotter | proceeds up, till there are no more locks to acquire. Then it executes the
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143 | 68adfdb2 | Guido Trotter | given LU and its opcodes.
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144 | 68adfdb2 | Guido Trotter |
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145 | 68adfdb2 | Guido Trotter | """
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146 | ca2a79e1 | Guido Trotter | adding_locks = level in lu.add_locks
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147 | ca2a79e1 | Guido Trotter | acquiring_locks = level in lu.needed_locks
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148 | 8a2941c4 | Guido Trotter | if level not in locking.LEVELS: |
149 | e92376d7 | Iustin Pop | if callable(self._run_notifier): |
150 | e92376d7 | Iustin Pop | self._run_notifier()
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151 | 8a2941c4 | Guido Trotter | result = self._ExecLU(lu)
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152 | ca2a79e1 | Guido Trotter | elif adding_locks and acquiring_locks: |
153 | ca2a79e1 | Guido Trotter | # We could both acquire and add locks at the same level, but for now we
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154 | ca2a79e1 | Guido Trotter | # don't need this, so we'll avoid the complicated code needed.
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155 | ca2a79e1 | Guido Trotter | raise NotImplementedError( |
156 | ca2a79e1 | Guido Trotter | "Can't declare locks to acquire when adding others")
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157 | ca2a79e1 | Guido Trotter | elif adding_locks or acquiring_locks: |
158 | fb8dcb62 | Guido Trotter | lu.DeclareLocks(level) |
159 | 3977a4c1 | Guido Trotter | share = lu.share_locks[level] |
160 | ca2a79e1 | Guido Trotter | if acquiring_locks:
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161 | ca2a79e1 | Guido Trotter | needed_locks = lu.needed_locks[level] |
162 | ca2a79e1 | Guido Trotter | lu.acquired_locks[level] = self.context.glm.acquire(level,
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163 | ca2a79e1 | Guido Trotter | needed_locks, |
164 | ca2a79e1 | Guido Trotter | shared=share) |
165 | ca2a79e1 | Guido Trotter | else: # adding_locks |
166 | ca2a79e1 | Guido Trotter | add_locks = lu.add_locks[level] |
167 | ca2a79e1 | Guido Trotter | lu.remove_locks[level] = add_locks |
168 | ca2a79e1 | Guido Trotter | try:
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169 | ca2a79e1 | Guido Trotter | self.context.glm.add(level, add_locks, acquired=1, shared=share) |
170 | ca2a79e1 | Guido Trotter | except errors.LockError:
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171 | ca2a79e1 | Guido Trotter | raise errors.OpPrereqError(
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172 | 5bbd3f7f | Michael Hanselmann | "Couldn't add locks (%s), probably because of a race condition"
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173 | ca2a79e1 | Guido Trotter | " with another job, who added them first" % add_locks)
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174 | 68adfdb2 | Guido Trotter | try:
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175 | ca2a79e1 | Guido Trotter | try:
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176 | ca2a79e1 | Guido Trotter | if adding_locks:
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177 | ca2a79e1 | Guido Trotter | lu.acquired_locks[level] = add_locks |
178 | ca2a79e1 | Guido Trotter | result = self._LockAndExecLU(lu, level + 1) |
179 | ca2a79e1 | Guido Trotter | finally:
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180 | ca2a79e1 | Guido Trotter | if level in lu.remove_locks: |
181 | ca2a79e1 | Guido Trotter | self.context.glm.remove(level, lu.remove_locks[level])
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182 | 68adfdb2 | Guido Trotter | finally:
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183 | 80ee04a4 | Guido Trotter | if self.context.glm.is_owned(level): |
184 | 68adfdb2 | Guido Trotter | self.context.glm.release(level)
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185 | 68adfdb2 | Guido Trotter | else:
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186 | 8a2941c4 | Guido Trotter | result = self._LockAndExecLU(lu, level + 1) |
187 | 68adfdb2 | Guido Trotter | |
188 | 68adfdb2 | Guido Trotter | return result
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189 | 68adfdb2 | Guido Trotter | |
190 | e92376d7 | Iustin Pop | def ExecOpCode(self, op, feedback_fn, run_notifier): |
191 | a8083063 | Iustin Pop | """Execute an opcode.
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192 | a8083063 | Iustin Pop |
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193 | e92376d7 | Iustin Pop | @type op: an OpCode instance
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194 | e92376d7 | Iustin Pop | @param op: the opcode to be executed
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195 | e92376d7 | Iustin Pop | @type feedback_fn: a function that takes a single argument
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196 | e92376d7 | Iustin Pop | @param feedback_fn: this function will be used as feedback from the LU
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197 | e92376d7 | Iustin Pop | code to the end-user
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198 | e92376d7 | Iustin Pop | @type run_notifier: callable (no arguments) or None
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199 | e92376d7 | Iustin Pop | @param run_notifier: this function (if callable) will be called when
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200 | e92376d7 | Iustin Pop | we are about to call the lu's Exec() method, that
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201 | 5bbd3f7f | Michael Hanselmann | is, after we have acquired all locks
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202 | a8083063 | Iustin Pop |
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203 | a8083063 | Iustin Pop | """
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204 | a8083063 | Iustin Pop | if not isinstance(op, opcodes.OpCode): |
205 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Non-opcode instance passed" |
206 | 3ecf6786 | Iustin Pop | " to ExecOpcode")
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207 | a8083063 | Iustin Pop | |
208 | f1048938 | Iustin Pop | self._feedback_fn = feedback_fn
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209 | e92376d7 | Iustin Pop | self._run_notifier = run_notifier
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210 | a8083063 | Iustin Pop | lu_class = self.DISPATCH_TABLE.get(op.__class__, None) |
211 | a8083063 | Iustin Pop | if lu_class is None: |
212 | 3ecf6786 | Iustin Pop | raise errors.OpCodeUnknown("Unknown opcode") |
213 | a8083063 | Iustin Pop | |
214 | 04864530 | Guido Trotter | # Acquire the Big Ganeti Lock exclusively if this LU requires it, and in a
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215 | 04864530 | Guido Trotter | # shared fashion otherwise (to prevent concurrent run with an exclusive LU.
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216 | 984f7c32 | Guido Trotter | self.context.glm.acquire(locking.LEVEL_CLUSTER, [locking.BGL],
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217 | 04864530 | Guido Trotter | shared=not lu_class.REQ_BGL)
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218 | fe482621 | Iustin Pop | try:
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219 | 04864530 | Guido Trotter | self.exclusive_BGL = lu_class.REQ_BGL
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220 | 72737a7f | Iustin Pop | lu = lu_class(self, op, self.context, self.rpc) |
221 | d465bdc8 | Guido Trotter | lu.ExpandNames() |
222 | 68adfdb2 | Guido Trotter | assert lu.needed_locks is not None, "needed_locks not set by LU" |
223 | 04e1bfaf | Guido Trotter | result = self._LockAndExecLU(lu, locking.LEVEL_INSTANCE)
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224 | 04864530 | Guido Trotter | finally:
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225 | 984f7c32 | Guido Trotter | self.context.glm.release(locking.LEVEL_CLUSTER)
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226 | 04864530 | Guido Trotter | self.exclusive_BGL = False |
227 | 6a4aa7c1 | Iustin Pop | |
228 | a8083063 | Iustin Pop | return result
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229 | a8083063 | Iustin Pop | |
230 | 0fbbf897 | Iustin Pop | def LogStep(self, current, total, message): |
231 | 0fbbf897 | Iustin Pop | """Log a change in LU execution progress.
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232 | 0fbbf897 | Iustin Pop |
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233 | 0fbbf897 | Iustin Pop | """
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234 | a5eb7789 | Iustin Pop | logging.debug("Step %d/%d %s", current, total, message)
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235 | 0fbbf897 | Iustin Pop | self._feedback_fn("STEP %d/%d %s" % (current, total, message)) |
236 | 0fbbf897 | Iustin Pop | |
237 | c0088fb9 | Iustin Pop | def LogWarning(self, message, *args, **kwargs): |
238 | 0fbbf897 | Iustin Pop | """Log a warning to the logs and the user.
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239 | 0fbbf897 | Iustin Pop |
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240 | c0088fb9 | Iustin Pop | The optional keyword argument is 'hint' and can be used to show a
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241 | c0088fb9 | Iustin Pop | hint to the user (presumably related to the warning). If the
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242 | c0088fb9 | Iustin Pop | message is empty, it will not be printed at all, allowing one to
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243 | c0088fb9 | Iustin Pop | show only a hint.
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244 | 0fbbf897 | Iustin Pop |
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245 | c0088fb9 | Iustin Pop | """
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246 | c0088fb9 | Iustin Pop | assert not kwargs or (len(kwargs) == 1 and "hint" in kwargs), \ |
247 | c0088fb9 | Iustin Pop | "Invalid keyword arguments for LogWarning (%s)" % str(kwargs) |
248 | c0088fb9 | Iustin Pop | if args:
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249 | c0088fb9 | Iustin Pop | message = message % tuple(args)
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250 | c0088fb9 | Iustin Pop | if message:
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251 | c0088fb9 | Iustin Pop | logging.warning(message) |
252 | c0088fb9 | Iustin Pop | self._feedback_fn(" - WARNING: %s" % message) |
253 | c0088fb9 | Iustin Pop | if "hint" in kwargs: |
254 | c0088fb9 | Iustin Pop | self._feedback_fn(" Hint: %s" % kwargs["hint"]) |
255 | c0088fb9 | Iustin Pop | |
256 | c0088fb9 | Iustin Pop | def LogInfo(self, message, *args): |
257 | 0fbbf897 | Iustin Pop | """Log an informational message to the logs and the user.
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258 | 0fbbf897 | Iustin Pop |
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259 | 0fbbf897 | Iustin Pop | """
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260 | c0088fb9 | Iustin Pop | if args:
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261 | c0088fb9 | Iustin Pop | message = message % tuple(args)
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262 | a5eb7789 | Iustin Pop | logging.info(message) |
263 | 0fbbf897 | Iustin Pop | self._feedback_fn(" - INFO: %s" % message) |
264 | 0fbbf897 | Iustin Pop | |
265 | a8083063 | Iustin Pop | |
266 | a8083063 | Iustin Pop | class HooksMaster(object): |
267 | a8083063 | Iustin Pop | """Hooks master.
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268 | a8083063 | Iustin Pop |
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269 | a8083063 | Iustin Pop | This class distributes the run commands to the nodes based on the
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270 | a8083063 | Iustin Pop | specific LU class.
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271 | a8083063 | Iustin Pop |
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272 | a8083063 | Iustin Pop | In order to remove the direct dependency on the rpc module, the
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273 | a8083063 | Iustin Pop | constructor needs a function which actually does the remote
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274 | a8083063 | Iustin Pop | call. This will usually be rpc.call_hooks_runner, but any function
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275 | a8083063 | Iustin Pop | which behaves the same works.
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276 | a8083063 | Iustin Pop |
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277 | a8083063 | Iustin Pop | """
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278 | 2395c322 | Iustin Pop | def __init__(self, callfn, proc, lu): |
279 | a8083063 | Iustin Pop | self.callfn = callfn
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280 | 2395c322 | Iustin Pop | self.proc = proc
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281 | a8083063 | Iustin Pop | self.lu = lu
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282 | a8083063 | Iustin Pop | self.op = lu.op
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283 | a8083063 | Iustin Pop | self.env, node_list_pre, node_list_post = self._BuildEnv() |
284 | a8083063 | Iustin Pop | self.node_list = {constants.HOOKS_PHASE_PRE: node_list_pre,
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285 | a8083063 | Iustin Pop | constants.HOOKS_PHASE_POST: node_list_post} |
286 | a8083063 | Iustin Pop | |
287 | a8083063 | Iustin Pop | def _BuildEnv(self): |
288 | a8083063 | Iustin Pop | """Compute the environment and the target nodes.
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289 | a8083063 | Iustin Pop |
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290 | a8083063 | Iustin Pop | Based on the opcode and the current node list, this builds the
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291 | a8083063 | Iustin Pop | environment for the hooks and the target node list for the run.
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292 | a8083063 | Iustin Pop |
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293 | a8083063 | Iustin Pop | """
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294 | a8083063 | Iustin Pop | env = { |
295 | a8083063 | Iustin Pop | "PATH": "/sbin:/bin:/usr/sbin:/usr/bin", |
296 | a8083063 | Iustin Pop | "GANETI_HOOKS_VERSION": constants.HOOKS_VERSION,
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297 | a8083063 | Iustin Pop | "GANETI_OP_CODE": self.op.OP_ID, |
298 | a8083063 | Iustin Pop | "GANETI_OBJECT_TYPE": self.lu.HTYPE, |
299 | 6a4aa7c1 | Iustin Pop | "GANETI_DATA_DIR": constants.DATA_DIR,
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300 | a8083063 | Iustin Pop | } |
301 | a8083063 | Iustin Pop | |
302 | 9a395a76 | Iustin Pop | if self.lu.HPATH is not None: |
303 | 9a395a76 | Iustin Pop | lu_env, lu_nodes_pre, lu_nodes_post = self.lu.BuildHooksEnv()
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304 | 9a395a76 | Iustin Pop | if lu_env:
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305 | 9a395a76 | Iustin Pop | for key in lu_env: |
306 | 9a395a76 | Iustin Pop | env["GANETI_" + key] = lu_env[key]
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307 | 9a395a76 | Iustin Pop | else:
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308 | 9a395a76 | Iustin Pop | lu_nodes_pre = lu_nodes_post = [] |
309 | a8083063 | Iustin Pop | |
310 | 4167825b | Iustin Pop | return env, frozenset(lu_nodes_pre), frozenset(lu_nodes_post) |
311 | 4167825b | Iustin Pop | |
312 | 4167825b | Iustin Pop | def _RunWrapper(self, node_list, hpath, phase): |
313 | 4167825b | Iustin Pop | """Simple wrapper over self.callfn.
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314 | 4167825b | Iustin Pop |
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315 | 4167825b | Iustin Pop | This method fixes the environment before doing the rpc call.
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316 | 4167825b | Iustin Pop |
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317 | 4167825b | Iustin Pop | """
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318 | 4167825b | Iustin Pop | env = self.env.copy()
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319 | 4167825b | Iustin Pop | env["GANETI_HOOKS_PHASE"] = phase
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320 | 4167825b | Iustin Pop | env["GANETI_HOOKS_PATH"] = hpath
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321 | 437138c9 | Michael Hanselmann | if self.lu.cfg is not None: |
322 | 437138c9 | Michael Hanselmann | env["GANETI_CLUSTER"] = self.lu.cfg.GetClusterName() |
323 | 437138c9 | Michael Hanselmann | env["GANETI_MASTER"] = self.lu.cfg.GetMasterNode() |
324 | a8083063 | Iustin Pop | |
325 | 4167825b | Iustin Pop | env = dict([(str(key), str(val)) for key, val in env.iteritems()]) |
326 | a8083063 | Iustin Pop | |
327 | 4167825b | Iustin Pop | return self.callfn(node_list, hpath, phase, env) |
328 | a8083063 | Iustin Pop | |
329 | a8083063 | Iustin Pop | def RunPhase(self, phase): |
330 | a8083063 | Iustin Pop | """Run all the scripts for a phase.
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331 | a8083063 | Iustin Pop |
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332 | a8083063 | Iustin Pop | This is the main function of the HookMaster.
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333 | a8083063 | Iustin Pop |
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334 | 8dca23a3 | Iustin Pop | @param phase: one of L{constants.HOOKS_PHASE_POST} or
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335 | 8dca23a3 | Iustin Pop | L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
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336 | 8dca23a3 | Iustin Pop | @return: the processed results of the hooks multi-node rpc call
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337 | 8dca23a3 | Iustin Pop | @raise errors.HooksFailure: on communication failure to the nodes
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338 | b07a6922 | Guido Trotter |
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339 | a8083063 | Iustin Pop | """
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340 | a8083063 | Iustin Pop | if not self.node_list[phase]: |
341 | 9a395a76 | Iustin Pop | # empty node list, we should not attempt to run this as either
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342 | 9a395a76 | Iustin Pop | # we're in the cluster init phase and the rpc client part can't
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343 | 9a395a76 | Iustin Pop | # even attempt to run, or this LU doesn't do hooks at all
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344 | a8083063 | Iustin Pop | return
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345 | 4167825b | Iustin Pop | hpath = self.lu.HPATH
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346 | 4167825b | Iustin Pop | results = self._RunWrapper(self.node_list[phase], hpath, phase) |
347 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
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348 | a8083063 | Iustin Pop | errs = [] |
349 | a8083063 | Iustin Pop | if not results: |
350 | 3ecf6786 | Iustin Pop | raise errors.HooksFailure("Communication failure") |
351 | a8083063 | Iustin Pop | for node_name in results: |
352 | a8083063 | Iustin Pop | res = results[node_name] |
353 | 3fb4f740 | Iustin Pop | if res.offline:
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354 | 2395c322 | Iustin Pop | continue
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355 | 3fb4f740 | Iustin Pop | msg = res.RemoteFailMsg() |
356 | 3fb4f740 | Iustin Pop | if msg:
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357 | 3fb4f740 | Iustin Pop | self.proc.LogWarning("Communication failure to node %s: %s", |
358 | 3fb4f740 | Iustin Pop | node_name, msg) |
359 | 3fb4f740 | Iustin Pop | continue
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360 | 3fb4f740 | Iustin Pop | for script, hkr, output in res.payload: |
361 | a8083063 | Iustin Pop | if hkr == constants.HKR_FAIL:
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362 | a8083063 | Iustin Pop | errs.append((node_name, script, output)) |
363 | a8083063 | Iustin Pop | if errs:
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364 | 3ecf6786 | Iustin Pop | raise errors.HooksAbort(errs)
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365 | b07a6922 | Guido Trotter | return results
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366 | 6a4aa7c1 | Iustin Pop | |
367 | 6a4aa7c1 | Iustin Pop | def RunConfigUpdate(self): |
368 | 6a4aa7c1 | Iustin Pop | """Run the special configuration update hook
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369 | 6a4aa7c1 | Iustin Pop |
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370 | 6a4aa7c1 | Iustin Pop | This is a special hook that runs only on the master after each
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371 | 6a4aa7c1 | Iustin Pop | top-level LI if the configuration has been updated.
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372 | 6a4aa7c1 | Iustin Pop |
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373 | 6a4aa7c1 | Iustin Pop | """
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374 | 6a4aa7c1 | Iustin Pop | phase = constants.HOOKS_PHASE_POST |
375 | 6a4aa7c1 | Iustin Pop | hpath = constants.HOOKS_NAME_CFGUPDATE |
376 | 437138c9 | Michael Hanselmann | nodes = [self.lu.cfg.GetMasterNode()]
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377 | 29921401 | Iustin Pop | self._RunWrapper(nodes, hpath, phase) |