root / lib / ssconf.py @ 73a465ee
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2 | a8083063 | Iustin Pop | #
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3 | a8083063 | Iustin Pop | |
4 | 856c67e1 | Michael Hanselmann | # Copyright (C) 2006, 2007, 2008 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 | """Global Configuration data for Ganeti.
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23 | a8083063 | Iustin Pop |
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24 | a8083063 | Iustin Pop | This module provides the interface to a special case of cluster
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25 | a8083063 | Iustin Pop | configuration data, which is mostly static and available to all nodes.
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26 | a8083063 | Iustin Pop |
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27 | a8083063 | Iustin Pop | """
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28 | a8083063 | Iustin Pop | |
29 | 5675cd1f | Iustin Pop | import sys |
30 | 03d1dba2 | Michael Hanselmann | import re |
31 | 7bcc78e4 | Guido Trotter | import os |
32 | a8083063 | Iustin Pop | |
33 | a8083063 | Iustin Pop | from ganeti import errors |
34 | a8083063 | Iustin Pop | from ganeti import constants |
35 | 41a57aab | Michael Hanselmann | from ganeti import utils |
36 | 856c67e1 | Michael Hanselmann | from ganeti import serializer |
37 | a8083063 | Iustin Pop | |
38 | a8083063 | Iustin Pop | |
39 | 0c223ea9 | Michael Hanselmann | SSCONF_LOCK_TIMEOUT = 10
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40 | 0c223ea9 | Michael Hanselmann | |
41 | 03d1dba2 | Michael Hanselmann | RE_VALID_SSCONF_NAME = re.compile(r'^[-_a-z0-9]+$')
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42 | 03d1dba2 | Michael Hanselmann | |
43 | 0c223ea9 | Michael Hanselmann | |
44 | 02f99608 | Oleksiy Mishchenko | class SimpleConfigReader(object): |
45 | 856c67e1 | Michael Hanselmann | """Simple class to read configuration file.
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46 | 856c67e1 | Michael Hanselmann |
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47 | 856c67e1 | Michael Hanselmann | """
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48 | 856c67e1 | Michael Hanselmann | def __init__(self, file_name=constants.CLUSTER_CONF_FILE): |
49 | 856c67e1 | Michael Hanselmann | """Initializes this class.
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50 | 856c67e1 | Michael Hanselmann |
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51 | 856c67e1 | Michael Hanselmann | @type file_name: string
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52 | 856c67e1 | Michael Hanselmann | @param file_name: Configuration file path
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53 | 856c67e1 | Michael Hanselmann |
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54 | 856c67e1 | Michael Hanselmann | """
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55 | 856c67e1 | Michael Hanselmann | self._file_name = file_name
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56 | 7bcc78e4 | Guido Trotter | self._last_inode = None |
57 | 7bcc78e4 | Guido Trotter | self._last_mtime = None |
58 | 7bcc78e4 | Guido Trotter | self._last_size = None |
59 | 7bcc78e4 | Guido Trotter | # we need a forced reload at class init time, to initialize _last_*
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60 | 7bcc78e4 | Guido Trotter | self._Load(force=True) |
61 | 1fe93c75 | Guido Trotter | |
62 | 7bcc78e4 | Guido Trotter | def _Load(self, force=False): |
63 | ad8b2f9b | Guido Trotter | """Loads (or reloads) the config file.
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64 | 1fe93c75 | Guido Trotter |
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65 | 7bcc78e4 | Guido Trotter | @type force: boolean
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66 | 7bcc78e4 | Guido Trotter | @param force: whether to force the reload without checking the mtime
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67 | 7bcc78e4 | Guido Trotter | @rtype: boolean
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68 | 7bcc78e4 | Guido Trotter | @return: boolean values that says whether we reloaded the configuration or not
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69 | 7bcc78e4 | Guido Trotter | (because we decided it was already up-to-date)
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70 | 7bcc78e4 | Guido Trotter |
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71 | 1fe93c75 | Guido Trotter | """
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72 | d4c1bd12 | Guido Trotter | try:
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73 | d4c1bd12 | Guido Trotter | cfg_stat = os.stat(self._file_name)
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74 | d4c1bd12 | Guido Trotter | except EnvironmentError, err: |
75 | d4c1bd12 | Guido Trotter | raise errors.ConfigurationError("Cannot stat config file %s: %s" % |
76 | d4c1bd12 | Guido Trotter | (self._file_name, err))
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77 | 7bcc78e4 | Guido Trotter | inode = cfg_stat.st_ino |
78 | 7bcc78e4 | Guido Trotter | mtime = cfg_stat.st_mtime |
79 | 7bcc78e4 | Guido Trotter | size = cfg_stat.st_size |
80 | 7bcc78e4 | Guido Trotter | |
81 | 7bcc78e4 | Guido Trotter | reload = False
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82 | 7bcc78e4 | Guido Trotter | if force or inode != self._last_inode or \ |
83 | 7bcc78e4 | Guido Trotter | mtime > self._last_mtime or \ |
84 | 7bcc78e4 | Guido Trotter | size != self._last_size:
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85 | 7bcc78e4 | Guido Trotter | self._last_inode = inode
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86 | 7bcc78e4 | Guido Trotter | self._last_mtime = mtime
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87 | 7bcc78e4 | Guido Trotter | self._last_size = size
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88 | 7bcc78e4 | Guido Trotter | reload = True
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89 | 7bcc78e4 | Guido Trotter | |
90 | 7bcc78e4 | Guido Trotter | if not reload: |
91 | 7bcc78e4 | Guido Trotter | return False |
92 | 7bcc78e4 | Guido Trotter | |
93 | 01cf7dbe | Guido Trotter | try:
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94 | 1fe93c75 | Guido Trotter | self._config_data = serializer.Load(utils.ReadFile(self._file_name)) |
95 | d4c1bd12 | Guido Trotter | except EnvironmentError, err: |
96 | 01cf7dbe | Guido Trotter | raise errors.ConfigurationError("Cannot read config file %s: %s" % |
97 | 1fe93c75 | Guido Trotter | (self._file_name, err))
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98 | 01cf7dbe | Guido Trotter | except ValueError, err: |
99 | 01cf7dbe | Guido Trotter | raise errors.ConfigurationError("Cannot load config file %s: %s" % |
100 | 1fe93c75 | Guido Trotter | (self._file_name, err))
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101 | 856c67e1 | Michael Hanselmann | |
102 | ae130c81 | Guido Trotter | self._ip_to_instance = {}
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103 | ae130c81 | Guido Trotter | for iname in self._config_data['instances']: |
104 | ae130c81 | Guido Trotter | instance = self._config_data['instances'][iname] |
105 | ae130c81 | Guido Trotter | for nic in instance['nics']: |
106 | ae130c81 | Guido Trotter | if 'ip' in nic and nic['ip']: |
107 | ae130c81 | Guido Trotter | self._ip_to_instance[nic['ip']] = iname |
108 | ae130c81 | Guido Trotter | |
109 | 7bcc78e4 | Guido Trotter | return True |
110 | 7bcc78e4 | Guido Trotter | |
111 | ad8b2f9b | Guido Trotter | # Clients can request a reload of the config file, so we export our internal
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112 | ad8b2f9b | Guido Trotter | # _Load function as Reload.
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113 | ad8b2f9b | Guido Trotter | Reload = _Load |
114 | ad8b2f9b | Guido Trotter | |
115 | 856c67e1 | Michael Hanselmann | def GetClusterName(self): |
116 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["cluster_name"] |
117 | 856c67e1 | Michael Hanselmann | |
118 | 856c67e1 | Michael Hanselmann | def GetHostKey(self): |
119 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["rsahostkeypub"] |
120 | 856c67e1 | Michael Hanselmann | |
121 | 856c67e1 | Michael Hanselmann | def GetMasterNode(self): |
122 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["master_node"] |
123 | 856c67e1 | Michael Hanselmann | |
124 | 856c67e1 | Michael Hanselmann | def GetMasterIP(self): |
125 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["master_ip"] |
126 | 856c67e1 | Michael Hanselmann | |
127 | 856c67e1 | Michael Hanselmann | def GetMasterNetdev(self): |
128 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["master_netdev"] |
129 | 856c67e1 | Michael Hanselmann | |
130 | 856c67e1 | Michael Hanselmann | def GetFileStorageDir(self): |
131 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["file_storage_dir"] |
132 | 856c67e1 | Michael Hanselmann | |
133 | 856c67e1 | Michael Hanselmann | def GetNodeList(self): |
134 | 856c67e1 | Michael Hanselmann | return self._config_data["nodes"].keys() |
135 | 856c67e1 | Michael Hanselmann | |
136 | a0c26bdb | Guido Trotter | def GetConfigSerialNo(self): |
137 | a0c26bdb | Guido Trotter | return self._config_data["serial_no"] |
138 | a0c26bdb | Guido Trotter | |
139 | a0c26bdb | Guido Trotter | def GetClusterSerialNo(self): |
140 | a0c26bdb | Guido Trotter | return self._config_data["cluster"]["serial_no"] |
141 | a0c26bdb | Guido Trotter | |
142 | e843991b | Guido Trotter | def GetNodeStatusFlags(self, node): |
143 | e843991b | Guido Trotter | """Get a node's status flags
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144 | e843991b | Guido Trotter |
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145 | e843991b | Guido Trotter | @type node: string
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146 | e843991b | Guido Trotter | @param node: node name
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147 | e843991b | Guido Trotter | @rtype: (bool, bool, bool)
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148 | e843991b | Guido Trotter | @return: (master_candidate, drained, offline) (or None if no such node)
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149 | e843991b | Guido Trotter |
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150 | e843991b | Guido Trotter | """
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151 | e843991b | Guido Trotter | if node not in self._config_data["nodes"]: |
152 | e843991b | Guido Trotter | return None |
153 | e843991b | Guido Trotter | |
154 | e843991b | Guido Trotter | master_candidate = self._config_data["nodes"][node]["master_candidate"] |
155 | e843991b | Guido Trotter | drained = self._config_data["nodes"][node]["drained"] |
156 | e843991b | Guido Trotter | offline = self._config_data["nodes"][node]["offline"] |
157 | e843991b | Guido Trotter | return master_candidate, drained, offline
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158 | e843991b | Guido Trotter | |
159 | ae130c81 | Guido Trotter | def GetInstanceByIp(self, ip): |
160 | ae130c81 | Guido Trotter | if ip not in self._ip_to_instance: |
161 | ae130c81 | Guido Trotter | return None |
162 | ae130c81 | Guido Trotter | return self._ip_to_instance[ip] |
163 | ae130c81 | Guido Trotter | |
164 | ae130c81 | Guido Trotter | def GetNodePrimaryIp(self, node): |
165 | ae130c81 | Guido Trotter | """Get a node's primary ip
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166 | ae130c81 | Guido Trotter |
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167 | ae130c81 | Guido Trotter | @type node: string
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168 | ae130c81 | Guido Trotter | @param node: node name
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169 | ae130c81 | Guido Trotter | @rtype: string, or None
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170 | ae130c81 | Guido Trotter | @return: node's primary ip, or None if no such node
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171 | ae130c81 | Guido Trotter |
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172 | ae130c81 | Guido Trotter | """
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173 | ae130c81 | Guido Trotter | if node not in self._config_data["nodes"]: |
174 | ae130c81 | Guido Trotter | return None |
175 | ae130c81 | Guido Trotter | return self._config_data["nodes"][node]["primary_ip"] |
176 | ae130c81 | Guido Trotter | |
177 | ae130c81 | Guido Trotter | def GetInstancePrimaryNode(self, instance): |
178 | ae130c81 | Guido Trotter | """Get an instance's primary node
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179 | ae130c81 | Guido Trotter |
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180 | ae130c81 | Guido Trotter | @type instance: string
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181 | ae130c81 | Guido Trotter | @param instance: instance name
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182 | ae130c81 | Guido Trotter | @rtype: string, or None
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183 | ae130c81 | Guido Trotter | @return: primary node, or None if no such instance
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184 | ae130c81 | Guido Trotter |
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185 | ae130c81 | Guido Trotter | """
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186 | ae130c81 | Guido Trotter | if instance not in self._config_data["instances"]: |
187 | ae130c81 | Guido Trotter | return None |
188 | ae130c81 | Guido Trotter | return self._config_data["instances"][instance]["primary_node"] |
189 | ae130c81 | Guido Trotter | |
190 | 856c67e1 | Michael Hanselmann | |
191 | 93384844 | Iustin Pop | class SimpleStore(object): |
192 | 93384844 | Iustin Pop | """Interface to static cluster data.
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193 | 93384844 | Iustin Pop |
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194 | 93384844 | Iustin Pop | This is different that the config.ConfigWriter and
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195 | 93384844 | Iustin Pop | SimpleConfigReader classes in that it holds data that will always be
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196 | 93384844 | Iustin Pop | present, even on nodes which don't have all the cluster data.
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197 | 93384844 | Iustin Pop |
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198 | 93384844 | Iustin Pop | Other particularities of the datastore:
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199 | 93384844 | Iustin Pop | - keys are restricted to predefined values
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200 | 93384844 | Iustin Pop |
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201 | 93384844 | Iustin Pop | """
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202 | 93384844 | Iustin Pop | _SS_FILEPREFIX = "ssconf_"
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203 | 93384844 | Iustin Pop | _VALID_KEYS = ( |
204 | 93384844 | Iustin Pop | constants.SS_CLUSTER_NAME, |
205 | 5d60b3bd | Iustin Pop | constants.SS_CLUSTER_TAGS, |
206 | 93384844 | Iustin Pop | constants.SS_FILE_STORAGE_DIR, |
207 | f56618e0 | Iustin Pop | constants.SS_MASTER_CANDIDATES, |
208 | 8113a52e | Luca Bigliardi | constants.SS_MASTER_CANDIDATES_IPS, |
209 | 93384844 | Iustin Pop | constants.SS_MASTER_IP, |
210 | 93384844 | Iustin Pop | constants.SS_MASTER_NETDEV, |
211 | 93384844 | Iustin Pop | constants.SS_MASTER_NODE, |
212 | 93384844 | Iustin Pop | constants.SS_NODE_LIST, |
213 | f9780ccd | Luca Bigliardi | constants.SS_NODE_PRIMARY_IPS, |
214 | f9780ccd | Luca Bigliardi | constants.SS_NODE_SECONDARY_IPS, |
215 | a3316e4a | Iustin Pop | constants.SS_OFFLINE_NODES, |
216 | 81a49123 | Iustin Pop | constants.SS_ONLINE_NODES, |
217 | 81a49123 | Iustin Pop | constants.SS_INSTANCE_LIST, |
218 | 8a113c7a | Iustin Pop | constants.SS_RELEASE_VERSION, |
219 | 93384844 | Iustin Pop | ) |
220 | 93384844 | Iustin Pop | _MAX_SIZE = 131072
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221 | 93384844 | Iustin Pop | |
222 | 93384844 | Iustin Pop | def __init__(self, cfg_location=None): |
223 | 93384844 | Iustin Pop | if cfg_location is None: |
224 | 93384844 | Iustin Pop | self._cfg_dir = constants.DATA_DIR
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225 | 93384844 | Iustin Pop | else:
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226 | 93384844 | Iustin Pop | self._cfg_dir = cfg_location
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227 | 93384844 | Iustin Pop | |
228 | 93384844 | Iustin Pop | def KeyToFilename(self, key): |
229 | 93384844 | Iustin Pop | """Convert a given key into filename.
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230 | 93384844 | Iustin Pop |
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231 | 93384844 | Iustin Pop | """
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232 | 93384844 | Iustin Pop | if key not in self._VALID_KEYS: |
233 | 93384844 | Iustin Pop | raise errors.ProgrammerError("Invalid key requested from SSConf: '%s'" |
234 | 93384844 | Iustin Pop | % str(key))
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235 | 93384844 | Iustin Pop | |
236 | 93384844 | Iustin Pop | filename = self._cfg_dir + '/' + self._SS_FILEPREFIX + key |
237 | 93384844 | Iustin Pop | return filename
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238 | 93384844 | Iustin Pop | |
239 | 93384844 | Iustin Pop | def _ReadFile(self, key): |
240 | 93384844 | Iustin Pop | """Generic routine to read keys.
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241 | 93384844 | Iustin Pop |
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242 | 93384844 | Iustin Pop | This will read the file which holds the value requested. Errors
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243 | 93384844 | Iustin Pop | will be changed into ConfigurationErrors.
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244 | 93384844 | Iustin Pop |
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245 | 93384844 | Iustin Pop | """
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246 | 93384844 | Iustin Pop | filename = self.KeyToFilename(key)
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247 | 93384844 | Iustin Pop | try:
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248 | 920b5878 | Guido Trotter | data = utils.ReadFile(filename, size=self._MAX_SIZE)
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249 | 93384844 | Iustin Pop | except EnvironmentError, err: |
250 | 93384844 | Iustin Pop | raise errors.ConfigurationError("Can't read from the ssconf file:" |
251 | 93384844 | Iustin Pop | " '%s'" % str(err)) |
252 | 920b5878 | Guido Trotter | data = data.rstrip('\n')
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253 | 93384844 | Iustin Pop | return data
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254 | 93384844 | Iustin Pop | |
255 | 89b14f05 | Iustin Pop | def WriteFiles(self, values): |
256 | 89b14f05 | Iustin Pop | """Writes ssconf files used by external scripts.
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257 | 89b14f05 | Iustin Pop |
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258 | 89b14f05 | Iustin Pop | @type values: dict
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259 | 89b14f05 | Iustin Pop | @param values: Dictionary of (name, value)
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260 | 89b14f05 | Iustin Pop |
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261 | 89b14f05 | Iustin Pop | """
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262 | 89b14f05 | Iustin Pop | ssconf_lock = utils.FileLock(constants.SSCONF_LOCK_FILE) |
263 | 89b14f05 | Iustin Pop | |
264 | 89b14f05 | Iustin Pop | # Get lock while writing files
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265 | 89b14f05 | Iustin Pop | ssconf_lock.Exclusive(blocking=True, timeout=SSCONF_LOCK_TIMEOUT)
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266 | 89b14f05 | Iustin Pop | try:
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267 | 89b14f05 | Iustin Pop | for name, value in values.iteritems(): |
268 | 02b31f32 | Iustin Pop | if value and not value.endswith("\n"): |
269 | 89b14f05 | Iustin Pop | value += "\n"
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270 | 81a49123 | Iustin Pop | utils.WriteFile(self.KeyToFilename(name), data=value, mode=0444) |
271 | 89b14f05 | Iustin Pop | finally:
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272 | 89b14f05 | Iustin Pop | ssconf_lock.Unlock() |
273 | 89b14f05 | Iustin Pop | |
274 | 93384844 | Iustin Pop | def GetFileList(self): |
275 | 93384844 | Iustin Pop | """Return the list of all config files.
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276 | 93384844 | Iustin Pop |
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277 | 93384844 | Iustin Pop | This is used for computing node replication data.
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278 | 93384844 | Iustin Pop |
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279 | 93384844 | Iustin Pop | """
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280 | 93384844 | Iustin Pop | return [self.KeyToFilename(key) for key in self._VALID_KEYS] |
281 | 93384844 | Iustin Pop | |
282 | 93384844 | Iustin Pop | def GetClusterName(self): |
283 | 93384844 | Iustin Pop | """Get the cluster name.
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284 | 93384844 | Iustin Pop |
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285 | 93384844 | Iustin Pop | """
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286 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_CLUSTER_NAME) |
287 | 93384844 | Iustin Pop | |
288 | 93384844 | Iustin Pop | def GetFileStorageDir(self): |
289 | 93384844 | Iustin Pop | """Get the file storage dir.
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290 | 93384844 | Iustin Pop |
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291 | 93384844 | Iustin Pop | """
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292 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_FILE_STORAGE_DIR) |
293 | 93384844 | Iustin Pop | |
294 | f56618e0 | Iustin Pop | def GetMasterCandidates(self): |
295 | f56618e0 | Iustin Pop | """Return the list of master candidates.
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296 | f56618e0 | Iustin Pop |
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297 | f56618e0 | Iustin Pop | """
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298 | f56618e0 | Iustin Pop | data = self._ReadFile(constants.SS_MASTER_CANDIDATES)
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299 | f56618e0 | Iustin Pop | nl = data.splitlines(False)
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300 | f56618e0 | Iustin Pop | return nl
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301 | f56618e0 | Iustin Pop | |
302 | 8113a52e | Luca Bigliardi | def GetMasterCandidatesIPList(self): |
303 | 8113a52e | Luca Bigliardi | """Return the list of master candidates' primary IP.
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304 | 8113a52e | Luca Bigliardi |
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305 | 8113a52e | Luca Bigliardi | """
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306 | 8113a52e | Luca Bigliardi | data = self._ReadFile(constants.SS_MASTER_CANDIDATES_IPS)
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307 | 8113a52e | Luca Bigliardi | nl = data.splitlines(False)
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308 | 8113a52e | Luca Bigliardi | return nl
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309 | 8113a52e | Luca Bigliardi | |
310 | 93384844 | Iustin Pop | def GetMasterIP(self): |
311 | 93384844 | Iustin Pop | """Get the IP of the master node for this cluster.
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312 | 93384844 | Iustin Pop |
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313 | 93384844 | Iustin Pop | """
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314 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_IP) |
315 | 93384844 | Iustin Pop | |
316 | 93384844 | Iustin Pop | def GetMasterNetdev(self): |
317 | 93384844 | Iustin Pop | """Get the netdev to which we'll add the master ip.
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318 | 93384844 | Iustin Pop |
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319 | 93384844 | Iustin Pop | """
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320 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NETDEV) |
321 | 93384844 | Iustin Pop | |
322 | 93384844 | Iustin Pop | def GetMasterNode(self): |
323 | 93384844 | Iustin Pop | """Get the hostname of the master node for this cluster.
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324 | 93384844 | Iustin Pop |
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325 | 93384844 | Iustin Pop | """
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326 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NODE) |
327 | 93384844 | Iustin Pop | |
328 | 93384844 | Iustin Pop | def GetNodeList(self): |
329 | 93384844 | Iustin Pop | """Return the list of cluster nodes.
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330 | 93384844 | Iustin Pop |
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331 | 93384844 | Iustin Pop | """
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332 | 93384844 | Iustin Pop | data = self._ReadFile(constants.SS_NODE_LIST)
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333 | 93384844 | Iustin Pop | nl = data.splitlines(False)
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334 | 93384844 | Iustin Pop | return nl
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335 | 93384844 | Iustin Pop | |
336 | f9780ccd | Luca Bigliardi | def GetNodePrimaryIPList(self): |
337 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' primary IP.
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338 | f9780ccd | Luca Bigliardi |
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339 | f9780ccd | Luca Bigliardi | """
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340 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_PRIMARY_IPS)
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341 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
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342 | f9780ccd | Luca Bigliardi | return nl
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343 | f9780ccd | Luca Bigliardi | |
344 | f9780ccd | Luca Bigliardi | def GetNodeSecondaryIPList(self): |
345 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' secondary IP.
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346 | f9780ccd | Luca Bigliardi |
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347 | f9780ccd | Luca Bigliardi | """
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348 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_SECONDARY_IPS)
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349 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
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350 | f9780ccd | Luca Bigliardi | return nl
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351 | f9780ccd | Luca Bigliardi | |
352 | 25e39bfa | Iustin Pop | def GetClusterTags(self): |
353 | 25e39bfa | Iustin Pop | """Return the cluster tags.
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354 | 25e39bfa | Iustin Pop |
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355 | 25e39bfa | Iustin Pop | """
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356 | 25e39bfa | Iustin Pop | data = self._ReadFile(constants.SS_CLUSTER_TAGS)
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357 | 25e39bfa | Iustin Pop | nl = data.splitlines(False)
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358 | 25e39bfa | Iustin Pop | return nl
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359 | 25e39bfa | Iustin Pop | |
360 | 93384844 | Iustin Pop | |
361 | b33e986b | Iustin Pop | def GetMasterAndMyself(ss=None): |
362 | b33e986b | Iustin Pop | """Get the master node and my own hostname.
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363 | b33e986b | Iustin Pop |
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364 | b33e986b | Iustin Pop | This can be either used for a 'soft' check (compared to CheckMaster,
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365 | b33e986b | Iustin Pop | which exits) or just for computing both at the same time.
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366 | b33e986b | Iustin Pop |
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367 | b33e986b | Iustin Pop | The function does not handle any errors, these should be handled in
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368 | b33e986b | Iustin Pop | the caller (errors.ConfigurationError, errors.ResolverError).
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369 | b33e986b | Iustin Pop |
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370 | 8135a2db | Iustin Pop | @param ss: either a sstore.SimpleConfigReader or a
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371 | 8135a2db | Iustin Pop | sstore.SimpleStore instance
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372 | 8135a2db | Iustin Pop | @rtype: tuple
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373 | 8135a2db | Iustin Pop | @return: a tuple (master node name, my own name)
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374 | 8135a2db | Iustin Pop |
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375 | b33e986b | Iustin Pop | """
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376 | b33e986b | Iustin Pop | if ss is None: |
377 | 93384844 | Iustin Pop | ss = SimpleStore() |
378 | b33e986b | Iustin Pop | return ss.GetMasterNode(), utils.HostInfo().name
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379 | b33e986b | Iustin Pop | |
380 | 06dc5b44 | Iustin Pop | |
381 | b33e986b | Iustin Pop | def CheckMaster(debug, ss=None): |
382 | 5675cd1f | Iustin Pop | """Checks the node setup.
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383 | 5675cd1f | Iustin Pop |
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384 | 5675cd1f | Iustin Pop | If this is the master, the function will return. Otherwise it will
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385 | 5675cd1f | Iustin Pop | exit with an exit code based on the node status.
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386 | 5675cd1f | Iustin Pop |
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387 | 5675cd1f | Iustin Pop | """
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388 | 5675cd1f | Iustin Pop | try:
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389 | b33e986b | Iustin Pop | master_name, myself = GetMasterAndMyself(ss) |
390 | 5675cd1f | Iustin Pop | except errors.ConfigurationError, err:
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391 | 5675cd1f | Iustin Pop | print "Cluster configuration incomplete: '%s'" % str(err) |
392 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
393 | 5675cd1f | Iustin Pop | except errors.ResolverError, err:
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394 | 5675cd1f | Iustin Pop | sys.stderr.write("Cannot resolve my own name (%s)\n" % err.args[0]) |
395 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
396 | 5675cd1f | Iustin Pop | |
397 | b33e986b | Iustin Pop | if myself != master_name:
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398 | 5675cd1f | Iustin Pop | if debug:
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399 | 5675cd1f | Iustin Pop | sys.stderr.write("Not master, exiting.\n")
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400 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NOTMASTER) |
401 | 3f71b464 | Guido Trotter | |
402 | 3f71b464 | Guido Trotter | |
403 | 3f71b464 | Guido Trotter | def CheckMasterCandidate(debug, ss=None): |
404 | 3f71b464 | Guido Trotter | """Checks the node setup.
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405 | 3f71b464 | Guido Trotter |
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406 | 3f71b464 | Guido Trotter | If this is a master candidate, the function will return. Otherwise it will
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407 | 3f71b464 | Guido Trotter | exit with an exit code based on the node status.
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408 | 3f71b464 | Guido Trotter |
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409 | 3f71b464 | Guido Trotter | """
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410 | 3f71b464 | Guido Trotter | try:
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411 | 3f71b464 | Guido Trotter | if ss is None: |
412 | 3f71b464 | Guido Trotter | ss = SimpleStore() |
413 | 3f71b464 | Guido Trotter | myself = utils.HostInfo().name |
414 | 3f71b464 | Guido Trotter | candidates = ss.GetMasterCandidates() |
415 | 3f71b464 | Guido Trotter | except errors.ConfigurationError, err:
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416 | 3f71b464 | Guido Trotter | print "Cluster configuration incomplete: '%s'" % str(err) |
417 | 3f71b464 | Guido Trotter | sys.exit(constants.EXIT_NODESETUP_ERROR) |
418 | 3f71b464 | Guido Trotter | except errors.ResolverError, err:
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419 | 3f71b464 | Guido Trotter | sys.stderr.write("Cannot resolve my own name (%s)\n" % err.args[0]) |
420 | 3f71b464 | Guido Trotter | sys.exit(constants.EXIT_NODESETUP_ERROR) |
421 | 3f71b464 | Guido Trotter | |
422 | 3f71b464 | Guido Trotter | if myself not in candidates: |
423 | 3f71b464 | Guido Trotter | if debug:
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424 | 3f71b464 | Guido Trotter | sys.stderr.write("Not master candidate, exiting.\n")
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425 | 3f71b464 | Guido Trotter | sys.exit(constants.EXIT_NOTCANDIDATE) |