root / lib / ssconf.py @ 47a626b0
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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 | 23824641 | Luca Bigliardi | from ganeti import objects |
38 | a8083063 | Iustin Pop | |
39 | a8083063 | Iustin Pop | |
40 | 0c223ea9 | Michael Hanselmann | SSCONF_LOCK_TIMEOUT = 10
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41 | 0c223ea9 | Michael Hanselmann | |
42 | 03d1dba2 | Michael Hanselmann | RE_VALID_SSCONF_NAME = re.compile(r'^[-_a-z0-9]+$')
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43 | 03d1dba2 | Michael Hanselmann | |
44 | 0c223ea9 | Michael Hanselmann | |
45 | 02f99608 | Oleksiy Mishchenko | class SimpleConfigReader(object): |
46 | 856c67e1 | Michael Hanselmann | """Simple class to read configuration file.
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47 | 856c67e1 | Michael Hanselmann |
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48 | 856c67e1 | Michael Hanselmann | """
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49 | 856c67e1 | Michael Hanselmann | def __init__(self, file_name=constants.CLUSTER_CONF_FILE): |
50 | 856c67e1 | Michael Hanselmann | """Initializes this class.
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51 | 856c67e1 | Michael Hanselmann |
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52 | 856c67e1 | Michael Hanselmann | @type file_name: string
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53 | 856c67e1 | Michael Hanselmann | @param file_name: Configuration file path
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54 | 856c67e1 | Michael Hanselmann |
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55 | 856c67e1 | Michael Hanselmann | """
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56 | 856c67e1 | Michael Hanselmann | self._file_name = file_name
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57 | 7bcc78e4 | Guido Trotter | self._last_inode = None |
58 | 7bcc78e4 | Guido Trotter | self._last_mtime = None |
59 | 7bcc78e4 | Guido Trotter | self._last_size = None |
60 | 69b99987 | Michael Hanselmann | |
61 | 69b99987 | Michael Hanselmann | self._config_data = None |
62 | 69b99987 | Michael Hanselmann | self._instances_ips = None |
63 | 69b99987 | Michael Hanselmann | self._inst_ips_by_link = None |
64 | 69b99987 | Michael Hanselmann | self._ip_to_instance = None |
65 | 69b99987 | Michael Hanselmann | self._mc_primary_ips = None |
66 | 69b99987 | Michael Hanselmann | self._nodes_primary_ips = None |
67 | 69b99987 | Michael Hanselmann | |
68 | 7bcc78e4 | Guido Trotter | # we need a forced reload at class init time, to initialize _last_*
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69 | 7bcc78e4 | Guido Trotter | self._Load(force=True) |
70 | 1fe93c75 | Guido Trotter | |
71 | 7bcc78e4 | Guido Trotter | def _Load(self, force=False): |
72 | ad8b2f9b | Guido Trotter | """Loads (or reloads) the config file.
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73 | 1fe93c75 | Guido Trotter |
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74 | 7bcc78e4 | Guido Trotter | @type force: boolean
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75 | 7bcc78e4 | Guido Trotter | @param force: whether to force the reload without checking the mtime
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76 | 7bcc78e4 | Guido Trotter | @rtype: boolean
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77 | 4d4a651d | Michael Hanselmann | @return: boolean value that says whether we reloaded the configuration or
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78 | 4d4a651d | Michael Hanselmann | not (because we decided it was already up-to-date)
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79 | 7bcc78e4 | Guido Trotter |
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80 | 1fe93c75 | Guido Trotter | """
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81 | d4c1bd12 | Guido Trotter | try:
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82 | d4c1bd12 | Guido Trotter | cfg_stat = os.stat(self._file_name)
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83 | d4c1bd12 | Guido Trotter | except EnvironmentError, err: |
84 | d4c1bd12 | Guido Trotter | raise errors.ConfigurationError("Cannot stat config file %s: %s" % |
85 | d4c1bd12 | Guido Trotter | (self._file_name, err))
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86 | 7bcc78e4 | Guido Trotter | inode = cfg_stat.st_ino |
87 | 7bcc78e4 | Guido Trotter | mtime = cfg_stat.st_mtime |
88 | 7bcc78e4 | Guido Trotter | size = cfg_stat.st_size |
89 | 7bcc78e4 | Guido Trotter | |
90 | 69b99987 | Michael Hanselmann | if (force or inode != self._last_inode or |
91 | 69b99987 | Michael Hanselmann | mtime > self._last_mtime or |
92 | 69b99987 | Michael Hanselmann | size != self._last_size):
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93 | 7bcc78e4 | Guido Trotter | self._last_inode = inode
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94 | 7bcc78e4 | Guido Trotter | self._last_mtime = mtime
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95 | 7bcc78e4 | Guido Trotter | self._last_size = size
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96 | 69b99987 | Michael Hanselmann | else:
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97 | 69b99987 | Michael Hanselmann | # Don't reload
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98 | 7bcc78e4 | Guido Trotter | return False |
99 | 7bcc78e4 | Guido Trotter | |
100 | 01cf7dbe | Guido Trotter | try:
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101 | 1fe93c75 | Guido Trotter | self._config_data = serializer.Load(utils.ReadFile(self._file_name)) |
102 | d4c1bd12 | Guido Trotter | except EnvironmentError, err: |
103 | 01cf7dbe | Guido Trotter | raise errors.ConfigurationError("Cannot read config file %s: %s" % |
104 | 1fe93c75 | Guido Trotter | (self._file_name, err))
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105 | 01cf7dbe | Guido Trotter | except ValueError, err: |
106 | 01cf7dbe | Guido Trotter | raise errors.ConfigurationError("Cannot load config file %s: %s" % |
107 | 1fe93c75 | Guido Trotter | (self._file_name, err))
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108 | 856c67e1 | Michael Hanselmann | |
109 | ae130c81 | Guido Trotter | self._ip_to_instance = {}
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110 | d01ae714 | Luca Bigliardi | self._instances_ips = []
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111 | 23824641 | Luca Bigliardi | self._inst_ips_by_link = {}
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112 | 23824641 | Luca Bigliardi | c_nparams = self._config_data['cluster']['nicparams'][constants.PP_DEFAULT] |
113 | ae130c81 | Guido Trotter | for iname in self._config_data['instances']: |
114 | ae130c81 | Guido Trotter | instance = self._config_data['instances'][iname] |
115 | ae130c81 | Guido Trotter | for nic in instance['nics']: |
116 | ae130c81 | Guido Trotter | if 'ip' in nic and nic['ip']: |
117 | d01ae714 | Luca Bigliardi | self._instances_ips.append(nic['ip']) |
118 | ae130c81 | Guido Trotter | self._ip_to_instance[nic['ip']] = iname |
119 | 23824641 | Luca Bigliardi | params = objects.FillDict(c_nparams, nic['nicparams'])
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120 | 23824641 | Luca Bigliardi | if not params['link'] in self._inst_ips_by_link: |
121 | 23824641 | Luca Bigliardi | self._inst_ips_by_link[params['link']] = [] |
122 | 23824641 | Luca Bigliardi | self._inst_ips_by_link[params['link']].append(nic['ip']) |
123 | ae130c81 | Guido Trotter | |
124 | efbb4fd2 | Luca Bigliardi | self._nodes_primary_ips = []
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125 | efbb4fd2 | Luca Bigliardi | self._mc_primary_ips = []
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126 | efbb4fd2 | Luca Bigliardi | for node_name in self._config_data["nodes"]: |
127 | efbb4fd2 | Luca Bigliardi | node = self._config_data["nodes"][node_name] |
128 | efbb4fd2 | Luca Bigliardi | self._nodes_primary_ips.append(node["primary_ip"]) |
129 | efbb4fd2 | Luca Bigliardi | if node["master_candidate"]: |
130 | efbb4fd2 | Luca Bigliardi | self._mc_primary_ips.append(node["primary_ip"]) |
131 | efbb4fd2 | Luca Bigliardi | |
132 | 7bcc78e4 | Guido Trotter | return True |
133 | 7bcc78e4 | Guido Trotter | |
134 | ad8b2f9b | Guido Trotter | # Clients can request a reload of the config file, so we export our internal
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135 | ad8b2f9b | Guido Trotter | # _Load function as Reload.
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136 | ad8b2f9b | Guido Trotter | Reload = _Load |
137 | ad8b2f9b | Guido Trotter | |
138 | 856c67e1 | Michael Hanselmann | def GetClusterName(self): |
139 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["cluster_name"] |
140 | 856c67e1 | Michael Hanselmann | |
141 | 856c67e1 | Michael Hanselmann | def GetHostKey(self): |
142 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["rsahostkeypub"] |
143 | 856c67e1 | Michael Hanselmann | |
144 | 856c67e1 | Michael Hanselmann | def GetMasterNode(self): |
145 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["master_node"] |
146 | 856c67e1 | Michael Hanselmann | |
147 | 856c67e1 | Michael Hanselmann | def GetMasterIP(self): |
148 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["master_ip"] |
149 | 856c67e1 | Michael Hanselmann | |
150 | 856c67e1 | Michael Hanselmann | def GetMasterNetdev(self): |
151 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["master_netdev"] |
152 | 856c67e1 | Michael Hanselmann | |
153 | 856c67e1 | Michael Hanselmann | def GetFileStorageDir(self): |
154 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["file_storage_dir"] |
155 | 856c67e1 | Michael Hanselmann | |
156 | 856c67e1 | Michael Hanselmann | def GetNodeList(self): |
157 | 856c67e1 | Michael Hanselmann | return self._config_data["nodes"].keys() |
158 | 856c67e1 | Michael Hanselmann | |
159 | a0c26bdb | Guido Trotter | def GetConfigSerialNo(self): |
160 | a0c26bdb | Guido Trotter | return self._config_data["serial_no"] |
161 | a0c26bdb | Guido Trotter | |
162 | a0c26bdb | Guido Trotter | def GetClusterSerialNo(self): |
163 | a0c26bdb | Guido Trotter | return self._config_data["cluster"]["serial_no"] |
164 | a0c26bdb | Guido Trotter | |
165 | 47a626b0 | Guido Trotter | def GetDefaultNicParams(self): |
166 | 47a626b0 | Guido Trotter | return self._config_data["cluster"]["nicparams"][constants.PP_DEFAULT] |
167 | 47a626b0 | Guido Trotter | |
168 | 47a626b0 | Guido Trotter | def GetDefaultNicLink(self): |
169 | 47a626b0 | Guido Trotter | return self.GetDefaultNicParams()[constants.NIC_LINK] |
170 | 47a626b0 | Guido Trotter | |
171 | e843991b | Guido Trotter | def GetNodeStatusFlags(self, node): |
172 | e843991b | Guido Trotter | """Get a node's status flags
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173 | e843991b | Guido Trotter |
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174 | e843991b | Guido Trotter | @type node: string
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175 | e843991b | Guido Trotter | @param node: node name
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176 | e843991b | Guido Trotter | @rtype: (bool, bool, bool)
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177 | e843991b | Guido Trotter | @return: (master_candidate, drained, offline) (or None if no such node)
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178 | e843991b | Guido Trotter |
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179 | e843991b | Guido Trotter | """
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180 | e843991b | Guido Trotter | if node not in self._config_data["nodes"]: |
181 | e843991b | Guido Trotter | return None |
182 | e843991b | Guido Trotter | |
183 | e843991b | Guido Trotter | master_candidate = self._config_data["nodes"][node]["master_candidate"] |
184 | e843991b | Guido Trotter | drained = self._config_data["nodes"][node]["drained"] |
185 | e843991b | Guido Trotter | offline = self._config_data["nodes"][node]["offline"] |
186 | e843991b | Guido Trotter | return master_candidate, drained, offline
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187 | e843991b | Guido Trotter | |
188 | ae130c81 | Guido Trotter | def GetInstanceByIp(self, ip): |
189 | ae130c81 | Guido Trotter | if ip not in self._ip_to_instance: |
190 | ae130c81 | Guido Trotter | return None |
191 | ae130c81 | Guido Trotter | return self._ip_to_instance[ip] |
192 | ae130c81 | Guido Trotter | |
193 | ae130c81 | Guido Trotter | def GetNodePrimaryIp(self, node): |
194 | ae130c81 | Guido Trotter | """Get a node's primary ip
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195 | ae130c81 | Guido Trotter |
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196 | ae130c81 | Guido Trotter | @type node: string
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197 | ae130c81 | Guido Trotter | @param node: node name
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198 | ae130c81 | Guido Trotter | @rtype: string, or None
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199 | ae130c81 | Guido Trotter | @return: node's primary ip, or None if no such node
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200 | ae130c81 | Guido Trotter |
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201 | ae130c81 | Guido Trotter | """
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202 | ae130c81 | Guido Trotter | if node not in self._config_data["nodes"]: |
203 | ae130c81 | Guido Trotter | return None |
204 | ae130c81 | Guido Trotter | return self._config_data["nodes"][node]["primary_ip"] |
205 | ae130c81 | Guido Trotter | |
206 | ae130c81 | Guido Trotter | def GetInstancePrimaryNode(self, instance): |
207 | ae130c81 | Guido Trotter | """Get an instance's primary node
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208 | ae130c81 | Guido Trotter |
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209 | ae130c81 | Guido Trotter | @type instance: string
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210 | ae130c81 | Guido Trotter | @param instance: instance name
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211 | ae130c81 | Guido Trotter | @rtype: string, or None
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212 | ae130c81 | Guido Trotter | @return: primary node, or None if no such instance
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213 | ae130c81 | Guido Trotter |
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214 | ae130c81 | Guido Trotter | """
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215 | ae130c81 | Guido Trotter | if instance not in self._config_data["instances"]: |
216 | ae130c81 | Guido Trotter | return None |
217 | ae130c81 | Guido Trotter | return self._config_data["instances"][instance]["primary_node"] |
218 | ae130c81 | Guido Trotter | |
219 | efbb4fd2 | Luca Bigliardi | def GetNodesPrimaryIps(self): |
220 | efbb4fd2 | Luca Bigliardi | return self._nodes_primary_ips |
221 | efbb4fd2 | Luca Bigliardi | |
222 | efbb4fd2 | Luca Bigliardi | def GetMasterCandidatesPrimaryIps(self): |
223 | efbb4fd2 | Luca Bigliardi | return self._mc_primary_ips |
224 | efbb4fd2 | Luca Bigliardi | |
225 | 23824641 | Luca Bigliardi | def GetInstancesIps(self, link): |
226 | 23824641 | Luca Bigliardi | if link is None: |
227 | 23824641 | Luca Bigliardi | return self._instances_ips |
228 | 23824641 | Luca Bigliardi | if link in self._inst_ips_by_link: |
229 | 23824641 | Luca Bigliardi | return self._inst_ips_by_link[link] |
230 | 23824641 | Luca Bigliardi | else:
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231 | 23824641 | Luca Bigliardi | return []
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232 | d01ae714 | Luca Bigliardi | |
233 | 856c67e1 | Michael Hanselmann | |
234 | 93384844 | Iustin Pop | class SimpleStore(object): |
235 | 93384844 | Iustin Pop | """Interface to static cluster data.
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236 | 93384844 | Iustin Pop |
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237 | 93384844 | Iustin Pop | This is different that the config.ConfigWriter and
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238 | 93384844 | Iustin Pop | SimpleConfigReader classes in that it holds data that will always be
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239 | 93384844 | Iustin Pop | present, even on nodes which don't have all the cluster data.
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240 | 93384844 | Iustin Pop |
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241 | 93384844 | Iustin Pop | Other particularities of the datastore:
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242 | 93384844 | Iustin Pop | - keys are restricted to predefined values
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243 | 93384844 | Iustin Pop |
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244 | 93384844 | Iustin Pop | """
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245 | 93384844 | Iustin Pop | _SS_FILEPREFIX = "ssconf_"
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246 | 93384844 | Iustin Pop | _VALID_KEYS = ( |
247 | 93384844 | Iustin Pop | constants.SS_CLUSTER_NAME, |
248 | 5d60b3bd | Iustin Pop | constants.SS_CLUSTER_TAGS, |
249 | 93384844 | Iustin Pop | constants.SS_FILE_STORAGE_DIR, |
250 | f56618e0 | Iustin Pop | constants.SS_MASTER_CANDIDATES, |
251 | 8113a52e | Luca Bigliardi | constants.SS_MASTER_CANDIDATES_IPS, |
252 | 93384844 | Iustin Pop | constants.SS_MASTER_IP, |
253 | 93384844 | Iustin Pop | constants.SS_MASTER_NETDEV, |
254 | 93384844 | Iustin Pop | constants.SS_MASTER_NODE, |
255 | 93384844 | Iustin Pop | constants.SS_NODE_LIST, |
256 | f9780ccd | Luca Bigliardi | constants.SS_NODE_PRIMARY_IPS, |
257 | f9780ccd | Luca Bigliardi | constants.SS_NODE_SECONDARY_IPS, |
258 | a3316e4a | Iustin Pop | constants.SS_OFFLINE_NODES, |
259 | 81a49123 | Iustin Pop | constants.SS_ONLINE_NODES, |
260 | 81a49123 | Iustin Pop | constants.SS_INSTANCE_LIST, |
261 | 8a113c7a | Iustin Pop | constants.SS_RELEASE_VERSION, |
262 | 93384844 | Iustin Pop | ) |
263 | 93384844 | Iustin Pop | _MAX_SIZE = 131072
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264 | 93384844 | Iustin Pop | |
265 | 93384844 | Iustin Pop | def __init__(self, cfg_location=None): |
266 | 93384844 | Iustin Pop | if cfg_location is None: |
267 | 93384844 | Iustin Pop | self._cfg_dir = constants.DATA_DIR
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268 | 93384844 | Iustin Pop | else:
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269 | 93384844 | Iustin Pop | self._cfg_dir = cfg_location
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270 | 93384844 | Iustin Pop | |
271 | 93384844 | Iustin Pop | def KeyToFilename(self, key): |
272 | 93384844 | Iustin Pop | """Convert a given key into filename.
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273 | 93384844 | Iustin Pop |
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274 | 93384844 | Iustin Pop | """
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275 | 93384844 | Iustin Pop | if key not in self._VALID_KEYS: |
276 | 93384844 | Iustin Pop | raise errors.ProgrammerError("Invalid key requested from SSConf: '%s'" |
277 | 93384844 | Iustin Pop | % str(key))
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278 | 93384844 | Iustin Pop | |
279 | 93384844 | Iustin Pop | filename = self._cfg_dir + '/' + self._SS_FILEPREFIX + key |
280 | 93384844 | Iustin Pop | return filename
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281 | 93384844 | Iustin Pop | |
282 | 93384844 | Iustin Pop | def _ReadFile(self, key): |
283 | 93384844 | Iustin Pop | """Generic routine to read keys.
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284 | 93384844 | Iustin Pop |
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285 | 93384844 | Iustin Pop | This will read the file which holds the value requested. Errors
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286 | 93384844 | Iustin Pop | will be changed into ConfigurationErrors.
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287 | 93384844 | Iustin Pop |
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288 | 93384844 | Iustin Pop | """
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289 | 93384844 | Iustin Pop | filename = self.KeyToFilename(key)
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290 | 93384844 | Iustin Pop | try:
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291 | 920b5878 | Guido Trotter | data = utils.ReadFile(filename, size=self._MAX_SIZE)
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292 | 93384844 | Iustin Pop | except EnvironmentError, err: |
293 | 93384844 | Iustin Pop | raise errors.ConfigurationError("Can't read from the ssconf file:" |
294 | 93384844 | Iustin Pop | " '%s'" % str(err)) |
295 | 920b5878 | Guido Trotter | data = data.rstrip('\n')
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296 | 93384844 | Iustin Pop | return data
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297 | 93384844 | Iustin Pop | |
298 | 89b14f05 | Iustin Pop | def WriteFiles(self, values): |
299 | 89b14f05 | Iustin Pop | """Writes ssconf files used by external scripts.
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300 | 89b14f05 | Iustin Pop |
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301 | 89b14f05 | Iustin Pop | @type values: dict
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302 | 89b14f05 | Iustin Pop | @param values: Dictionary of (name, value)
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303 | 89b14f05 | Iustin Pop |
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304 | 89b14f05 | Iustin Pop | """
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305 | 89b14f05 | Iustin Pop | ssconf_lock = utils.FileLock(constants.SSCONF_LOCK_FILE) |
306 | 89b14f05 | Iustin Pop | |
307 | 89b14f05 | Iustin Pop | # Get lock while writing files
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308 | 89b14f05 | Iustin Pop | ssconf_lock.Exclusive(blocking=True, timeout=SSCONF_LOCK_TIMEOUT)
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309 | 89b14f05 | Iustin Pop | try:
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310 | 89b14f05 | Iustin Pop | for name, value in values.iteritems(): |
311 | 02b31f32 | Iustin Pop | if value and not value.endswith("\n"): |
312 | 89b14f05 | Iustin Pop | value += "\n"
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313 | 81a49123 | Iustin Pop | utils.WriteFile(self.KeyToFilename(name), data=value, mode=0444) |
314 | 89b14f05 | Iustin Pop | finally:
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315 | 89b14f05 | Iustin Pop | ssconf_lock.Unlock() |
316 | 89b14f05 | Iustin Pop | |
317 | 93384844 | Iustin Pop | def GetFileList(self): |
318 | 93384844 | Iustin Pop | """Return the list of all config files.
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319 | 93384844 | Iustin Pop |
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320 | 93384844 | Iustin Pop | This is used for computing node replication data.
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321 | 93384844 | Iustin Pop |
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322 | 93384844 | Iustin Pop | """
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323 | 93384844 | Iustin Pop | return [self.KeyToFilename(key) for key in self._VALID_KEYS] |
324 | 93384844 | Iustin Pop | |
325 | 93384844 | Iustin Pop | def GetClusterName(self): |
326 | 93384844 | Iustin Pop | """Get the cluster name.
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327 | 93384844 | Iustin Pop |
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328 | 93384844 | Iustin Pop | """
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329 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_CLUSTER_NAME) |
330 | 93384844 | Iustin Pop | |
331 | 93384844 | Iustin Pop | def GetFileStorageDir(self): |
332 | 93384844 | Iustin Pop | """Get the file storage dir.
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333 | 93384844 | Iustin Pop |
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334 | 93384844 | Iustin Pop | """
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335 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_FILE_STORAGE_DIR) |
336 | 93384844 | Iustin Pop | |
337 | f56618e0 | Iustin Pop | def GetMasterCandidates(self): |
338 | f56618e0 | Iustin Pop | """Return the list of master candidates.
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339 | f56618e0 | Iustin Pop |
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340 | f56618e0 | Iustin Pop | """
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341 | f56618e0 | Iustin Pop | data = self._ReadFile(constants.SS_MASTER_CANDIDATES)
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342 | f56618e0 | Iustin Pop | nl = data.splitlines(False)
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343 | f56618e0 | Iustin Pop | return nl
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344 | f56618e0 | Iustin Pop | |
345 | 8113a52e | Luca Bigliardi | def GetMasterCandidatesIPList(self): |
346 | 8113a52e | Luca Bigliardi | """Return the list of master candidates' primary IP.
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347 | 8113a52e | Luca Bigliardi |
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348 | 8113a52e | Luca Bigliardi | """
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349 | 8113a52e | Luca Bigliardi | data = self._ReadFile(constants.SS_MASTER_CANDIDATES_IPS)
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350 | 8113a52e | Luca Bigliardi | nl = data.splitlines(False)
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351 | 8113a52e | Luca Bigliardi | return nl
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352 | 8113a52e | Luca Bigliardi | |
353 | 93384844 | Iustin Pop | def GetMasterIP(self): |
354 | 93384844 | Iustin Pop | """Get the IP of the master node for this cluster.
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355 | 93384844 | Iustin Pop |
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356 | 93384844 | Iustin Pop | """
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357 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_IP) |
358 | 93384844 | Iustin Pop | |
359 | 93384844 | Iustin Pop | def GetMasterNetdev(self): |
360 | 93384844 | Iustin Pop | """Get the netdev to which we'll add the master ip.
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361 | 93384844 | Iustin Pop |
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362 | 93384844 | Iustin Pop | """
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363 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NETDEV) |
364 | 93384844 | Iustin Pop | |
365 | 93384844 | Iustin Pop | def GetMasterNode(self): |
366 | 93384844 | Iustin Pop | """Get the hostname of the master node for this cluster.
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367 | 93384844 | Iustin Pop |
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368 | 93384844 | Iustin Pop | """
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369 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NODE) |
370 | 93384844 | Iustin Pop | |
371 | 93384844 | Iustin Pop | def GetNodeList(self): |
372 | 93384844 | Iustin Pop | """Return the list of cluster nodes.
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373 | 93384844 | Iustin Pop |
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374 | 93384844 | Iustin Pop | """
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375 | 93384844 | Iustin Pop | data = self._ReadFile(constants.SS_NODE_LIST)
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376 | 93384844 | Iustin Pop | nl = data.splitlines(False)
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377 | 93384844 | Iustin Pop | return nl
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378 | 93384844 | Iustin Pop | |
379 | f9780ccd | Luca Bigliardi | def GetNodePrimaryIPList(self): |
380 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' primary IP.
|
381 | f9780ccd | Luca Bigliardi |
|
382 | f9780ccd | Luca Bigliardi | """
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383 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_PRIMARY_IPS)
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384 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
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385 | f9780ccd | Luca Bigliardi | return nl
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386 | f9780ccd | Luca Bigliardi | |
387 | f9780ccd | Luca Bigliardi | def GetNodeSecondaryIPList(self): |
388 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' secondary IP.
|
389 | f9780ccd | Luca Bigliardi |
|
390 | f9780ccd | Luca Bigliardi | """
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391 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_SECONDARY_IPS)
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392 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
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393 | f9780ccd | Luca Bigliardi | return nl
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394 | f9780ccd | Luca Bigliardi | |
395 | 25e39bfa | Iustin Pop | def GetClusterTags(self): |
396 | 25e39bfa | Iustin Pop | """Return the cluster tags.
|
397 | 25e39bfa | Iustin Pop |
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398 | 25e39bfa | Iustin Pop | """
|
399 | 25e39bfa | Iustin Pop | data = self._ReadFile(constants.SS_CLUSTER_TAGS)
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400 | 25e39bfa | Iustin Pop | nl = data.splitlines(False)
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401 | 25e39bfa | Iustin Pop | return nl
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402 | 25e39bfa | Iustin Pop | |
403 | 93384844 | Iustin Pop | |
404 | b33e986b | Iustin Pop | def GetMasterAndMyself(ss=None): |
405 | b33e986b | Iustin Pop | """Get the master node and my own hostname.
|
406 | b33e986b | Iustin Pop |
|
407 | b33e986b | Iustin Pop | This can be either used for a 'soft' check (compared to CheckMaster,
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408 | b33e986b | Iustin Pop | which exits) or just for computing both at the same time.
|
409 | b33e986b | Iustin Pop |
|
410 | b33e986b | Iustin Pop | The function does not handle any errors, these should be handled in
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411 | b33e986b | Iustin Pop | the caller (errors.ConfigurationError, errors.ResolverError).
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412 | b33e986b | Iustin Pop |
|
413 | 8135a2db | Iustin Pop | @param ss: either a sstore.SimpleConfigReader or a
|
414 | 8135a2db | Iustin Pop | sstore.SimpleStore instance
|
415 | 8135a2db | Iustin Pop | @rtype: tuple
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416 | 8135a2db | Iustin Pop | @return: a tuple (master node name, my own name)
|
417 | 8135a2db | Iustin Pop |
|
418 | b33e986b | Iustin Pop | """
|
419 | b33e986b | Iustin Pop | if ss is None: |
420 | 93384844 | Iustin Pop | ss = SimpleStore() |
421 | b33e986b | Iustin Pop | return ss.GetMasterNode(), utils.HostInfo().name
|
422 | b33e986b | Iustin Pop | |
423 | 06dc5b44 | Iustin Pop | |
424 | b33e986b | Iustin Pop | def CheckMaster(debug, ss=None): |
425 | 5675cd1f | Iustin Pop | """Checks the node setup.
|
426 | 5675cd1f | Iustin Pop |
|
427 | 5675cd1f | Iustin Pop | If this is the master, the function will return. Otherwise it will
|
428 | 5675cd1f | Iustin Pop | exit with an exit code based on the node status.
|
429 | 5675cd1f | Iustin Pop |
|
430 | 5675cd1f | Iustin Pop | """
|
431 | 5675cd1f | Iustin Pop | try:
|
432 | b33e986b | Iustin Pop | master_name, myself = GetMasterAndMyself(ss) |
433 | 5675cd1f | Iustin Pop | except errors.ConfigurationError, err:
|
434 | 5675cd1f | Iustin Pop | print "Cluster configuration incomplete: '%s'" % str(err) |
435 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
436 | 5675cd1f | Iustin Pop | except errors.ResolverError, err:
|
437 | 5675cd1f | Iustin Pop | sys.stderr.write("Cannot resolve my own name (%s)\n" % err.args[0]) |
438 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
439 | 5675cd1f | Iustin Pop | |
440 | b33e986b | Iustin Pop | if myself != master_name:
|
441 | 5675cd1f | Iustin Pop | if debug:
|
442 | 5675cd1f | Iustin Pop | sys.stderr.write("Not master, exiting.\n")
|
443 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NOTMASTER) |
444 | 3f71b464 | Guido Trotter | |
445 | 3f71b464 | Guido Trotter | |
446 | 3f71b464 | Guido Trotter | def CheckMasterCandidate(debug, ss=None): |
447 | 3f71b464 | Guido Trotter | """Checks the node setup.
|
448 | 3f71b464 | Guido Trotter |
|
449 | 3f71b464 | Guido Trotter | If this is a master candidate, the function will return. Otherwise it will
|
450 | 3f71b464 | Guido Trotter | exit with an exit code based on the node status.
|
451 | 3f71b464 | Guido Trotter |
|
452 | 3f71b464 | Guido Trotter | """
|
453 | 3f71b464 | Guido Trotter | try:
|
454 | 3f71b464 | Guido Trotter | if ss is None: |
455 | 3f71b464 | Guido Trotter | ss = SimpleStore() |
456 | 3f71b464 | Guido Trotter | myself = utils.HostInfo().name |
457 | 3f71b464 | Guido Trotter | candidates = ss.GetMasterCandidates() |
458 | 3f71b464 | Guido Trotter | except errors.ConfigurationError, err:
|
459 | 3f71b464 | Guido Trotter | print "Cluster configuration incomplete: '%s'" % str(err) |
460 | 3f71b464 | Guido Trotter | sys.exit(constants.EXIT_NODESETUP_ERROR) |
461 | 3f71b464 | Guido Trotter | except errors.ResolverError, err:
|
462 | 3f71b464 | Guido Trotter | sys.stderr.write("Cannot resolve my own name (%s)\n" % err.args[0]) |
463 | 3f71b464 | Guido Trotter | sys.exit(constants.EXIT_NODESETUP_ERROR) |
464 | 3f71b464 | Guido Trotter | |
465 | 3f71b464 | Guido Trotter | if myself not in candidates: |
466 | 3f71b464 | Guido Trotter | if debug:
|
467 | 3f71b464 | Guido Trotter | sys.stderr.write("Not master candidate, exiting.\n")
|
468 | 3f71b464 | Guido Trotter | sys.exit(constants.EXIT_NOTCANDIDATE) |