root / lib / ssconf.py @ 9665bb3a
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1 | 2f31098c | Iustin Pop | #
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2 | a8083063 | Iustin Pop | #
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3 | a8083063 | Iustin Pop | |
4 | b705c7a6 | Manuel Franceschini | # Copyright (C) 2006, 2007, 2008, 2010 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 | 7dd999fc | Manuel Franceschini | import errno |
33 | a8083063 | Iustin Pop | |
34 | a8083063 | Iustin Pop | from ganeti import errors |
35 | a8083063 | Iustin Pop | from ganeti import constants |
36 | 41a57aab | Michael Hanselmann | from ganeti import utils |
37 | 856c67e1 | Michael Hanselmann | from ganeti import serializer |
38 | 23824641 | Luca Bigliardi | from ganeti import objects |
39 | a744b676 | Manuel Franceschini | from ganeti import netutils |
40 | a8083063 | Iustin Pop | |
41 | a8083063 | Iustin Pop | |
42 | 0c223ea9 | Michael Hanselmann | SSCONF_LOCK_TIMEOUT = 10
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43 | 0c223ea9 | Michael Hanselmann | |
44 | d0c8c01d | Iustin Pop | RE_VALID_SSCONF_NAME = re.compile(r"^[-_a-z0-9]+$")
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45 | 03d1dba2 | Michael Hanselmann | |
46 | 0c223ea9 | Michael Hanselmann | |
47 | 02f99608 | Oleksiy Mishchenko | class SimpleConfigReader(object): |
48 | 856c67e1 | Michael Hanselmann | """Simple class to read configuration file.
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49 | 856c67e1 | Michael Hanselmann |
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50 | 856c67e1 | Michael Hanselmann | """
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51 | 856c67e1 | Michael Hanselmann | def __init__(self, file_name=constants.CLUSTER_CONF_FILE): |
52 | 856c67e1 | Michael Hanselmann | """Initializes this class.
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53 | 856c67e1 | Michael Hanselmann |
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54 | 856c67e1 | Michael Hanselmann | @type file_name: string
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55 | 856c67e1 | Michael Hanselmann | @param file_name: Configuration file path
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56 | 856c67e1 | Michael Hanselmann |
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57 | 856c67e1 | Michael Hanselmann | """
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58 | 856c67e1 | Michael Hanselmann | self._file_name = file_name
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59 | 7bcc78e4 | Guido Trotter | self._last_inode = None |
60 | 7bcc78e4 | Guido Trotter | self._last_mtime = None |
61 | 7bcc78e4 | Guido Trotter | self._last_size = None |
62 | 69b99987 | Michael Hanselmann | |
63 | 69b99987 | Michael Hanselmann | self._config_data = None |
64 | 69b99987 | Michael Hanselmann | self._inst_ips_by_link = None |
65 | cd195419 | Guido Trotter | self._ip_to_inst_by_link = None |
66 | 099c52ad | Iustin Pop | self._instances_ips = None |
67 | 69b99987 | Michael Hanselmann | self._mc_primary_ips = None |
68 | 69b99987 | Michael Hanselmann | self._nodes_primary_ips = None |
69 | 69b99987 | Michael Hanselmann | |
70 | 7bcc78e4 | Guido Trotter | # we need a forced reload at class init time, to initialize _last_*
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71 | 7bcc78e4 | Guido Trotter | self._Load(force=True) |
72 | 1fe93c75 | Guido Trotter | |
73 | 7bcc78e4 | Guido Trotter | def _Load(self, force=False): |
74 | ad8b2f9b | Guido Trotter | """Loads (or reloads) the config file.
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75 | 1fe93c75 | Guido Trotter |
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76 | 7bcc78e4 | Guido Trotter | @type force: boolean
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77 | 7bcc78e4 | Guido Trotter | @param force: whether to force the reload without checking the mtime
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78 | 7bcc78e4 | Guido Trotter | @rtype: boolean
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79 | 4d4a651d | Michael Hanselmann | @return: boolean value that says whether we reloaded the configuration or
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80 | 4d4a651d | Michael Hanselmann | not (because we decided it was already up-to-date)
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81 | 7bcc78e4 | Guido Trotter |
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82 | 1fe93c75 | Guido Trotter | """
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83 | d4c1bd12 | Guido Trotter | try:
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84 | d4c1bd12 | Guido Trotter | cfg_stat = os.stat(self._file_name)
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85 | d4c1bd12 | Guido Trotter | except EnvironmentError, err: |
86 | d4c1bd12 | Guido Trotter | raise errors.ConfigurationError("Cannot stat config file %s: %s" % |
87 | d4c1bd12 | Guido Trotter | (self._file_name, err))
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88 | 7bcc78e4 | Guido Trotter | inode = cfg_stat.st_ino |
89 | 7bcc78e4 | Guido Trotter | mtime = cfg_stat.st_mtime |
90 | 7bcc78e4 | Guido Trotter | size = cfg_stat.st_size |
91 | 7bcc78e4 | Guido Trotter | |
92 | 69b99987 | Michael Hanselmann | if (force or inode != self._last_inode or |
93 | 69b99987 | Michael Hanselmann | mtime > self._last_mtime or |
94 | 69b99987 | Michael Hanselmann | size != self._last_size):
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95 | 7bcc78e4 | Guido Trotter | self._last_inode = inode
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96 | 7bcc78e4 | Guido Trotter | self._last_mtime = mtime
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97 | 7bcc78e4 | Guido Trotter | self._last_size = size
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98 | 69b99987 | Michael Hanselmann | else:
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99 | 69b99987 | Michael Hanselmann | # Don't reload
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100 | 7bcc78e4 | Guido Trotter | return False |
101 | 7bcc78e4 | Guido Trotter | |
102 | 01cf7dbe | Guido Trotter | try:
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103 | 1fe93c75 | Guido Trotter | self._config_data = serializer.Load(utils.ReadFile(self._file_name)) |
104 | d4c1bd12 | Guido Trotter | except EnvironmentError, err: |
105 | 01cf7dbe | Guido Trotter | raise errors.ConfigurationError("Cannot read config file %s: %s" % |
106 | 1fe93c75 | Guido Trotter | (self._file_name, err))
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107 | 01cf7dbe | Guido Trotter | except ValueError, err: |
108 | 01cf7dbe | Guido Trotter | raise errors.ConfigurationError("Cannot load config file %s: %s" % |
109 | 1fe93c75 | Guido Trotter | (self._file_name, err))
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110 | 856c67e1 | Michael Hanselmann | |
111 | cd195419 | Guido Trotter | self._ip_to_inst_by_link = {}
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112 | d01ae714 | Luca Bigliardi | self._instances_ips = []
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113 | 23824641 | Luca Bigliardi | self._inst_ips_by_link = {}
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114 | d0c8c01d | Iustin Pop | c_nparams = self._config_data["cluster"]["nicparams"][constants.PP_DEFAULT] |
115 | d0c8c01d | Iustin Pop | for iname in self._config_data["instances"]: |
116 | d0c8c01d | Iustin Pop | instance = self._config_data["instances"][iname] |
117 | d0c8c01d | Iustin Pop | for nic in instance["nics"]: |
118 | d0c8c01d | Iustin Pop | if "ip" in nic and nic["ip"]: |
119 | d0c8c01d | Iustin Pop | params = objects.FillDict(c_nparams, nic["nicparams"])
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120 | d0c8c01d | Iustin Pop | if not params["link"] in self._inst_ips_by_link: |
121 | d0c8c01d | Iustin Pop | self._inst_ips_by_link[params["link"]] = [] |
122 | d0c8c01d | Iustin Pop | self._ip_to_inst_by_link[params["link"]] = {} |
123 | d0c8c01d | Iustin Pop | self._ip_to_inst_by_link[params["link"]][nic["ip"]] = iname |
124 | d0c8c01d | Iustin Pop | self._inst_ips_by_link[params["link"]].append(nic["ip"]) |
125 | ae130c81 | Guido Trotter | |
126 | efbb4fd2 | Luca Bigliardi | self._nodes_primary_ips = []
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127 | efbb4fd2 | Luca Bigliardi | self._mc_primary_ips = []
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128 | efbb4fd2 | Luca Bigliardi | for node_name in self._config_data["nodes"]: |
129 | efbb4fd2 | Luca Bigliardi | node = self._config_data["nodes"][node_name] |
130 | efbb4fd2 | Luca Bigliardi | self._nodes_primary_ips.append(node["primary_ip"]) |
131 | efbb4fd2 | Luca Bigliardi | if node["master_candidate"]: |
132 | efbb4fd2 | Luca Bigliardi | self._mc_primary_ips.append(node["primary_ip"]) |
133 | efbb4fd2 | Luca Bigliardi | |
134 | 7bcc78e4 | Guido Trotter | return True |
135 | 7bcc78e4 | Guido Trotter | |
136 | ad8b2f9b | Guido Trotter | # Clients can request a reload of the config file, so we export our internal
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137 | ad8b2f9b | Guido Trotter | # _Load function as Reload.
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138 | ad8b2f9b | Guido Trotter | Reload = _Load |
139 | ad8b2f9b | Guido Trotter | |
140 | 856c67e1 | Michael Hanselmann | def GetClusterName(self): |
141 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["cluster_name"] |
142 | 856c67e1 | Michael Hanselmann | |
143 | 856c67e1 | Michael Hanselmann | def GetHostKey(self): |
144 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["rsahostkeypub"] |
145 | 856c67e1 | Michael Hanselmann | |
146 | 856c67e1 | Michael Hanselmann | def GetMasterNode(self): |
147 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["master_node"] |
148 | 856c67e1 | Michael Hanselmann | |
149 | 856c67e1 | Michael Hanselmann | def GetMasterIP(self): |
150 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["master_ip"] |
151 | 856c67e1 | Michael Hanselmann | |
152 | 856c67e1 | Michael Hanselmann | def GetMasterNetdev(self): |
153 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["master_netdev"] |
154 | 856c67e1 | Michael Hanselmann | |
155 | 5a8648eb | Andrea Spadaccini | def GetMasterNetmask(self): |
156 | 5a8648eb | Andrea Spadaccini | return self._config_data["cluster"]["master_netmask"] |
157 | 5a8648eb | Andrea Spadaccini | |
158 | 856c67e1 | Michael Hanselmann | def GetFileStorageDir(self): |
159 | 856c67e1 | Michael Hanselmann | return self._config_data["cluster"]["file_storage_dir"] |
160 | 856c67e1 | Michael Hanselmann | |
161 | 4b97f902 | Apollon Oikonomopoulos | def GetSharedFileStorageDir(self): |
162 | 4b97f902 | Apollon Oikonomopoulos | return self._config_data["cluster"]["shared_file_storage_dir"] |
163 | 4b97f902 | Apollon Oikonomopoulos | |
164 | 856c67e1 | Michael Hanselmann | def GetNodeList(self): |
165 | 856c67e1 | Michael Hanselmann | return self._config_data["nodes"].keys() |
166 | 856c67e1 | Michael Hanselmann | |
167 | a0c26bdb | Guido Trotter | def GetConfigSerialNo(self): |
168 | a0c26bdb | Guido Trotter | return self._config_data["serial_no"] |
169 | a0c26bdb | Guido Trotter | |
170 | a0c26bdb | Guido Trotter | def GetClusterSerialNo(self): |
171 | a0c26bdb | Guido Trotter | return self._config_data["cluster"]["serial_no"] |
172 | a0c26bdb | Guido Trotter | |
173 | 47a626b0 | Guido Trotter | def GetDefaultNicParams(self): |
174 | 47a626b0 | Guido Trotter | return self._config_data["cluster"]["nicparams"][constants.PP_DEFAULT] |
175 | 47a626b0 | Guido Trotter | |
176 | 47a626b0 | Guido Trotter | def GetDefaultNicLink(self): |
177 | 47a626b0 | Guido Trotter | return self.GetDefaultNicParams()[constants.NIC_LINK] |
178 | 47a626b0 | Guido Trotter | |
179 | e843991b | Guido Trotter | def GetNodeStatusFlags(self, node): |
180 | e843991b | Guido Trotter | """Get a node's status flags
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181 | e843991b | Guido Trotter |
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182 | e843991b | Guido Trotter | @type node: string
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183 | e843991b | Guido Trotter | @param node: node name
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184 | e843991b | Guido Trotter | @rtype: (bool, bool, bool)
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185 | e843991b | Guido Trotter | @return: (master_candidate, drained, offline) (or None if no such node)
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186 | e843991b | Guido Trotter |
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187 | e843991b | Guido Trotter | """
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188 | e843991b | Guido Trotter | if node not in self._config_data["nodes"]: |
189 | e843991b | Guido Trotter | return None |
190 | e843991b | Guido Trotter | |
191 | e843991b | Guido Trotter | master_candidate = self._config_data["nodes"][node]["master_candidate"] |
192 | e843991b | Guido Trotter | drained = self._config_data["nodes"][node]["drained"] |
193 | e843991b | Guido Trotter | offline = self._config_data["nodes"][node]["offline"] |
194 | e843991b | Guido Trotter | return master_candidate, drained, offline
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195 | e843991b | Guido Trotter | |
196 | cd195419 | Guido Trotter | def GetInstanceByLinkIp(self, ip, link): |
197 | 9d099698 | Guido Trotter | """Get instance name from its link and ip address.
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198 | 9d099698 | Guido Trotter |
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199 | 9d099698 | Guido Trotter | @type ip: string
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200 | 9d099698 | Guido Trotter | @param ip: ip address
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201 | 9d099698 | Guido Trotter | @type link: string
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202 | 9d099698 | Guido Trotter | @param link: nic link
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203 | 9d099698 | Guido Trotter | @rtype: string
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204 | 9d099698 | Guido Trotter | @return: instance name
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205 | 9d099698 | Guido Trotter |
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206 | 9d099698 | Guido Trotter | """
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207 | cd195419 | Guido Trotter | if not link: |
208 | cd195419 | Guido Trotter | link = self.GetDefaultNicLink()
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209 | cd195419 | Guido Trotter | if not link in self._ip_to_inst_by_link: |
210 | ae130c81 | Guido Trotter | return None |
211 | cd195419 | Guido Trotter | if not ip in self._ip_to_inst_by_link[link]: |
212 | cd195419 | Guido Trotter | return None |
213 | cd195419 | Guido Trotter | return self._ip_to_inst_by_link[link][ip] |
214 | ae130c81 | Guido Trotter | |
215 | ae130c81 | Guido Trotter | def GetNodePrimaryIp(self, node): |
216 | ae130c81 | Guido Trotter | """Get a node's primary ip
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217 | ae130c81 | Guido Trotter |
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218 | ae130c81 | Guido Trotter | @type node: string
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219 | ae130c81 | Guido Trotter | @param node: node name
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220 | ae130c81 | Guido Trotter | @rtype: string, or None
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221 | ae130c81 | Guido Trotter | @return: node's primary ip, or None if no such node
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222 | ae130c81 | Guido Trotter |
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223 | ae130c81 | Guido Trotter | """
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224 | ae130c81 | Guido Trotter | if node not in self._config_data["nodes"]: |
225 | ae130c81 | Guido Trotter | return None |
226 | ae130c81 | Guido Trotter | return self._config_data["nodes"][node]["primary_ip"] |
227 | ae130c81 | Guido Trotter | |
228 | ae130c81 | Guido Trotter | def GetInstancePrimaryNode(self, instance): |
229 | ae130c81 | Guido Trotter | """Get an instance's primary node
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230 | ae130c81 | Guido Trotter |
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231 | ae130c81 | Guido Trotter | @type instance: string
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232 | ae130c81 | Guido Trotter | @param instance: instance name
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233 | ae130c81 | Guido Trotter | @rtype: string, or None
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234 | ae130c81 | Guido Trotter | @return: primary node, or None if no such instance
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235 | ae130c81 | Guido Trotter |
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236 | ae130c81 | Guido Trotter | """
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237 | ae130c81 | Guido Trotter | if instance not in self._config_data["instances"]: |
238 | ae130c81 | Guido Trotter | return None |
239 | ae130c81 | Guido Trotter | return self._config_data["instances"][instance]["primary_node"] |
240 | ae130c81 | Guido Trotter | |
241 | efbb4fd2 | Luca Bigliardi | def GetNodesPrimaryIps(self): |
242 | efbb4fd2 | Luca Bigliardi | return self._nodes_primary_ips |
243 | efbb4fd2 | Luca Bigliardi | |
244 | efbb4fd2 | Luca Bigliardi | def GetMasterCandidatesPrimaryIps(self): |
245 | efbb4fd2 | Luca Bigliardi | return self._mc_primary_ips |
246 | efbb4fd2 | Luca Bigliardi | |
247 | 23824641 | Luca Bigliardi | def GetInstancesIps(self, link): |
248 | 9d099698 | Guido Trotter | """Get list of nic ips connected to a certain link.
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249 | 9d099698 | Guido Trotter |
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250 | 9d099698 | Guido Trotter | @type link: string
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251 | 9d099698 | Guido Trotter | @param link: nic link
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252 | 9d099698 | Guido Trotter | @rtype: list
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253 | 9d099698 | Guido Trotter | @return: list of ips connected to that link
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254 | 9d099698 | Guido Trotter |
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255 | 9d099698 | Guido Trotter | """
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256 | cd195419 | Guido Trotter | if not link: |
257 | cd195419 | Guido Trotter | link = self.GetDefaultNicLink()
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258 | cd195419 | Guido Trotter | |
259 | 23824641 | Luca Bigliardi | if link in self._inst_ips_by_link: |
260 | 23824641 | Luca Bigliardi | return self._inst_ips_by_link[link] |
261 | 23824641 | Luca Bigliardi | else:
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262 | 23824641 | Luca Bigliardi | return []
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263 | d01ae714 | Luca Bigliardi | |
264 | 856c67e1 | Michael Hanselmann | |
265 | 93384844 | Iustin Pop | class SimpleStore(object): |
266 | 93384844 | Iustin Pop | """Interface to static cluster data.
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267 | 93384844 | Iustin Pop |
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268 | 93384844 | Iustin Pop | This is different that the config.ConfigWriter and
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269 | 93384844 | Iustin Pop | SimpleConfigReader classes in that it holds data that will always be
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270 | 93384844 | Iustin Pop | present, even on nodes which don't have all the cluster data.
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271 | 93384844 | Iustin Pop |
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272 | 93384844 | Iustin Pop | Other particularities of the datastore:
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273 | 93384844 | Iustin Pop | - keys are restricted to predefined values
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274 | 93384844 | Iustin Pop |
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275 | 93384844 | Iustin Pop | """
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276 | 93384844 | Iustin Pop | _SS_FILEPREFIX = "ssconf_"
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277 | 93384844 | Iustin Pop | _VALID_KEYS = ( |
278 | 93384844 | Iustin Pop | constants.SS_CLUSTER_NAME, |
279 | 5d60b3bd | Iustin Pop | constants.SS_CLUSTER_TAGS, |
280 | 93384844 | Iustin Pop | constants.SS_FILE_STORAGE_DIR, |
281 | 4b97f902 | Apollon Oikonomopoulos | constants.SS_SHARED_FILE_STORAGE_DIR, |
282 | f56618e0 | Iustin Pop | constants.SS_MASTER_CANDIDATES, |
283 | 8113a52e | Luca Bigliardi | constants.SS_MASTER_CANDIDATES_IPS, |
284 | 93384844 | Iustin Pop | constants.SS_MASTER_IP, |
285 | 93384844 | Iustin Pop | constants.SS_MASTER_NETDEV, |
286 | 5a8648eb | Andrea Spadaccini | constants.SS_MASTER_NETMASK, |
287 | 93384844 | Iustin Pop | constants.SS_MASTER_NODE, |
288 | 93384844 | Iustin Pop | constants.SS_NODE_LIST, |
289 | f9780ccd | Luca Bigliardi | constants.SS_NODE_PRIMARY_IPS, |
290 | f9780ccd | Luca Bigliardi | constants.SS_NODE_SECONDARY_IPS, |
291 | a3316e4a | Iustin Pop | constants.SS_OFFLINE_NODES, |
292 | 81a49123 | Iustin Pop | constants.SS_ONLINE_NODES, |
293 | 868a98ca | Manuel Franceschini | constants.SS_PRIMARY_IP_FAMILY, |
294 | 81a49123 | Iustin Pop | constants.SS_INSTANCE_LIST, |
295 | 8a113c7a | Iustin Pop | constants.SS_RELEASE_VERSION, |
296 | 4f7a6a10 | Iustin Pop | constants.SS_HYPERVISOR_LIST, |
297 | 5c465a95 | Iustin Pop | constants.SS_MAINTAIN_NODE_HEALTH, |
298 | 0fbae49a | Balazs Lecz | constants.SS_UID_POOL, |
299 | 6f076453 | Guido Trotter | constants.SS_NODEGROUPS, |
300 | 93384844 | Iustin Pop | ) |
301 | 93384844 | Iustin Pop | _MAX_SIZE = 131072
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302 | 93384844 | Iustin Pop | |
303 | 93384844 | Iustin Pop | def __init__(self, cfg_location=None): |
304 | 93384844 | Iustin Pop | if cfg_location is None: |
305 | 93384844 | Iustin Pop | self._cfg_dir = constants.DATA_DIR
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306 | 93384844 | Iustin Pop | else:
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307 | 93384844 | Iustin Pop | self._cfg_dir = cfg_location
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308 | 93384844 | Iustin Pop | |
309 | 93384844 | Iustin Pop | def KeyToFilename(self, key): |
310 | 93384844 | Iustin Pop | """Convert a given key into filename.
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311 | 93384844 | Iustin Pop |
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312 | 93384844 | Iustin Pop | """
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313 | 93384844 | Iustin Pop | if key not in self._VALID_KEYS: |
314 | 93384844 | Iustin Pop | raise errors.ProgrammerError("Invalid key requested from SSConf: '%s'" |
315 | 93384844 | Iustin Pop | % str(key))
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316 | 93384844 | Iustin Pop | |
317 | d0c8c01d | Iustin Pop | filename = self._cfg_dir + "/" + self._SS_FILEPREFIX + key |
318 | 93384844 | Iustin Pop | return filename
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319 | 93384844 | Iustin Pop | |
320 | 7dd999fc | Manuel Franceschini | def _ReadFile(self, key, default=None): |
321 | 93384844 | Iustin Pop | """Generic routine to read keys.
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322 | 93384844 | Iustin Pop |
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323 | 93384844 | Iustin Pop | This will read the file which holds the value requested. Errors
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324 | 93384844 | Iustin Pop | will be changed into ConfigurationErrors.
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325 | 93384844 | Iustin Pop |
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326 | 93384844 | Iustin Pop | """
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327 | 93384844 | Iustin Pop | filename = self.KeyToFilename(key)
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328 | 93384844 | Iustin Pop | try:
|
329 | 920b5878 | Guido Trotter | data = utils.ReadFile(filename, size=self._MAX_SIZE)
|
330 | 93384844 | Iustin Pop | except EnvironmentError, err: |
331 | 7dd999fc | Manuel Franceschini | if err.errno == errno.ENOENT and default is not None: |
332 | 7dd999fc | Manuel Franceschini | return default
|
333 | 93384844 | Iustin Pop | raise errors.ConfigurationError("Can't read from the ssconf file:" |
334 | 93384844 | Iustin Pop | " '%s'" % str(err)) |
335 | d0c8c01d | Iustin Pop | data = data.rstrip("\n")
|
336 | 93384844 | Iustin Pop | return data
|
337 | 93384844 | Iustin Pop | |
338 | 89b14f05 | Iustin Pop | def WriteFiles(self, values): |
339 | 89b14f05 | Iustin Pop | """Writes ssconf files used by external scripts.
|
340 | 89b14f05 | Iustin Pop |
|
341 | 89b14f05 | Iustin Pop | @type values: dict
|
342 | 89b14f05 | Iustin Pop | @param values: Dictionary of (name, value)
|
343 | 89b14f05 | Iustin Pop |
|
344 | 89b14f05 | Iustin Pop | """
|
345 | b4478d34 | Michael Hanselmann | ssconf_lock = utils.FileLock.Open(constants.SSCONF_LOCK_FILE) |
346 | 89b14f05 | Iustin Pop | |
347 | 89b14f05 | Iustin Pop | # Get lock while writing files
|
348 | 89b14f05 | Iustin Pop | ssconf_lock.Exclusive(blocking=True, timeout=SSCONF_LOCK_TIMEOUT)
|
349 | 89b14f05 | Iustin Pop | try:
|
350 | 89b14f05 | Iustin Pop | for name, value in values.iteritems(): |
351 | 02b31f32 | Iustin Pop | if value and not value.endswith("\n"): |
352 | 89b14f05 | Iustin Pop | value += "\n"
|
353 | 999847c8 | Guido Trotter | if len(value) > self._MAX_SIZE: |
354 | 999847c8 | Guido Trotter | raise errors.ConfigurationError("ssconf file %s above maximum size" % |
355 | 999847c8 | Guido Trotter | name) |
356 | cd57bab6 | Michael Hanselmann | utils.WriteFile(self.KeyToFilename(name), data=value,
|
357 | cd57bab6 | Michael Hanselmann | mode=constants.SS_FILE_PERMS) |
358 | 89b14f05 | Iustin Pop | finally:
|
359 | 89b14f05 | Iustin Pop | ssconf_lock.Unlock() |
360 | 89b14f05 | Iustin Pop | |
361 | 93384844 | Iustin Pop | def GetFileList(self): |
362 | 93384844 | Iustin Pop | """Return the list of all config files.
|
363 | 93384844 | Iustin Pop |
|
364 | 93384844 | Iustin Pop | This is used for computing node replication data.
|
365 | 93384844 | Iustin Pop |
|
366 | 93384844 | Iustin Pop | """
|
367 | 93384844 | Iustin Pop | return [self.KeyToFilename(key) for key in self._VALID_KEYS] |
368 | 93384844 | Iustin Pop | |
369 | 93384844 | Iustin Pop | def GetClusterName(self): |
370 | 93384844 | Iustin Pop | """Get the cluster name.
|
371 | 93384844 | Iustin Pop |
|
372 | 93384844 | Iustin Pop | """
|
373 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_CLUSTER_NAME) |
374 | 93384844 | Iustin Pop | |
375 | 93384844 | Iustin Pop | def GetFileStorageDir(self): |
376 | 93384844 | Iustin Pop | """Get the file storage dir.
|
377 | 93384844 | Iustin Pop |
|
378 | 93384844 | Iustin Pop | """
|
379 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_FILE_STORAGE_DIR) |
380 | 93384844 | Iustin Pop | |
381 | 4b97f902 | Apollon Oikonomopoulos | def GetSharedFileStorageDir(self): |
382 | 4b97f902 | Apollon Oikonomopoulos | """Get the shared file storage dir.
|
383 | 4b97f902 | Apollon Oikonomopoulos |
|
384 | 4b97f902 | Apollon Oikonomopoulos | """
|
385 | 4b97f902 | Apollon Oikonomopoulos | return self._ReadFile(constants.SS_SHARED_FILE_STORAGE_DIR) |
386 | 4b97f902 | Apollon Oikonomopoulos | |
387 | f56618e0 | Iustin Pop | def GetMasterCandidates(self): |
388 | f56618e0 | Iustin Pop | """Return the list of master candidates.
|
389 | f56618e0 | Iustin Pop |
|
390 | f56618e0 | Iustin Pop | """
|
391 | f56618e0 | Iustin Pop | data = self._ReadFile(constants.SS_MASTER_CANDIDATES)
|
392 | f56618e0 | Iustin Pop | nl = data.splitlines(False)
|
393 | f56618e0 | Iustin Pop | return nl
|
394 | f56618e0 | Iustin Pop | |
395 | 8113a52e | Luca Bigliardi | def GetMasterCandidatesIPList(self): |
396 | 8113a52e | Luca Bigliardi | """Return the list of master candidates' primary IP.
|
397 | 8113a52e | Luca Bigliardi |
|
398 | 8113a52e | Luca Bigliardi | """
|
399 | 8113a52e | Luca Bigliardi | data = self._ReadFile(constants.SS_MASTER_CANDIDATES_IPS)
|
400 | 8113a52e | Luca Bigliardi | nl = data.splitlines(False)
|
401 | 8113a52e | Luca Bigliardi | return nl
|
402 | 8113a52e | Luca Bigliardi | |
403 | 93384844 | Iustin Pop | def GetMasterIP(self): |
404 | 93384844 | Iustin Pop | """Get the IP of the master node for this cluster.
|
405 | 93384844 | Iustin Pop |
|
406 | 93384844 | Iustin Pop | """
|
407 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_IP) |
408 | 93384844 | Iustin Pop | |
409 | 93384844 | Iustin Pop | def GetMasterNetdev(self): |
410 | 93384844 | Iustin Pop | """Get the netdev to which we'll add the master ip.
|
411 | 93384844 | Iustin Pop |
|
412 | 93384844 | Iustin Pop | """
|
413 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NETDEV) |
414 | 93384844 | Iustin Pop | |
415 | 5a8648eb | Andrea Spadaccini | def GetMasterNetmask(self): |
416 | 186c03b3 | Andrea Spadaccini | """Get the master netmask.
|
417 | 5a8648eb | Andrea Spadaccini |
|
418 | 5a8648eb | Andrea Spadaccini | """
|
419 | 186c03b3 | Andrea Spadaccini | try:
|
420 | 186c03b3 | Andrea Spadaccini | return self._ReadFile(constants.SS_MASTER_NETMASK) |
421 | 186c03b3 | Andrea Spadaccini | except errors.ConfigurationError:
|
422 | 186c03b3 | Andrea Spadaccini | family = self.GetPrimaryIPFamily()
|
423 | 186c03b3 | Andrea Spadaccini | ipcls = netutils.IPAddress.GetClassFromIpFamily(family) |
424 | 186c03b3 | Andrea Spadaccini | return ipcls.iplen
|
425 | 5a8648eb | Andrea Spadaccini | |
426 | 93384844 | Iustin Pop | def GetMasterNode(self): |
427 | 93384844 | Iustin Pop | """Get the hostname of the master node for this cluster.
|
428 | 93384844 | Iustin Pop |
|
429 | 93384844 | Iustin Pop | """
|
430 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NODE) |
431 | 93384844 | Iustin Pop | |
432 | 93384844 | Iustin Pop | def GetNodeList(self): |
433 | 93384844 | Iustin Pop | """Return the list of cluster nodes.
|
434 | 93384844 | Iustin Pop |
|
435 | 93384844 | Iustin Pop | """
|
436 | 93384844 | Iustin Pop | data = self._ReadFile(constants.SS_NODE_LIST)
|
437 | 93384844 | Iustin Pop | nl = data.splitlines(False)
|
438 | 93384844 | Iustin Pop | return nl
|
439 | 93384844 | Iustin Pop | |
440 | f9780ccd | Luca Bigliardi | def GetNodePrimaryIPList(self): |
441 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' primary IP.
|
442 | f9780ccd | Luca Bigliardi |
|
443 | f9780ccd | Luca Bigliardi | """
|
444 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_PRIMARY_IPS)
|
445 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
|
446 | f9780ccd | Luca Bigliardi | return nl
|
447 | f9780ccd | Luca Bigliardi | |
448 | f9780ccd | Luca Bigliardi | def GetNodeSecondaryIPList(self): |
449 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' secondary IP.
|
450 | f9780ccd | Luca Bigliardi |
|
451 | f9780ccd | Luca Bigliardi | """
|
452 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_SECONDARY_IPS)
|
453 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
|
454 | f9780ccd | Luca Bigliardi | return nl
|
455 | f9780ccd | Luca Bigliardi | |
456 | 6f076453 | Guido Trotter | def GetNodegroupList(self): |
457 | 6f076453 | Guido Trotter | """Return the list of nodegroups.
|
458 | 6f076453 | Guido Trotter |
|
459 | 6f076453 | Guido Trotter | """
|
460 | 6f076453 | Guido Trotter | data = self._ReadFile(constants.SS_NODEGROUPS)
|
461 | 6f076453 | Guido Trotter | nl = data.splitlines(False)
|
462 | 6f076453 | Guido Trotter | return nl
|
463 | 6f076453 | Guido Trotter | |
464 | 25e39bfa | Iustin Pop | def GetClusterTags(self): |
465 | 25e39bfa | Iustin Pop | """Return the cluster tags.
|
466 | 25e39bfa | Iustin Pop |
|
467 | 25e39bfa | Iustin Pop | """
|
468 | 25e39bfa | Iustin Pop | data = self._ReadFile(constants.SS_CLUSTER_TAGS)
|
469 | 25e39bfa | Iustin Pop | nl = data.splitlines(False)
|
470 | 25e39bfa | Iustin Pop | return nl
|
471 | 25e39bfa | Iustin Pop | |
472 | 4f7a6a10 | Iustin Pop | def GetHypervisorList(self): |
473 | 4f7a6a10 | Iustin Pop | """Return the list of enabled hypervisors.
|
474 | 4f7a6a10 | Iustin Pop |
|
475 | 4f7a6a10 | Iustin Pop | """
|
476 | 4f7a6a10 | Iustin Pop | data = self._ReadFile(constants.SS_HYPERVISOR_LIST)
|
477 | 4f7a6a10 | Iustin Pop | nl = data.splitlines(False)
|
478 | 4f7a6a10 | Iustin Pop | return nl
|
479 | 4f7a6a10 | Iustin Pop | |
480 | 5c465a95 | Iustin Pop | def GetMaintainNodeHealth(self): |
481 | 5c465a95 | Iustin Pop | """Return the value of the maintain_node_health option.
|
482 | 5c465a95 | Iustin Pop |
|
483 | 5c465a95 | Iustin Pop | """
|
484 | 5c465a95 | Iustin Pop | data = self._ReadFile(constants.SS_MAINTAIN_NODE_HEALTH)
|
485 | 5c465a95 | Iustin Pop | # we rely on the bool serialization here
|
486 | 5c465a95 | Iustin Pop | return data == "True" |
487 | 5c465a95 | Iustin Pop | |
488 | 0fbae49a | Balazs Lecz | def GetUidPool(self): |
489 | 0fbae49a | Balazs Lecz | """Return the user-id pool definition string.
|
490 | 0fbae49a | Balazs Lecz |
|
491 | 0fbae49a | Balazs Lecz | The separator character is a newline.
|
492 | 0fbae49a | Balazs Lecz |
|
493 | d3b790bb | Balazs Lecz | The return value can be parsed using uidpool.ParseUidPool()::
|
494 | d3b790bb | Balazs Lecz |
|
495 | 0fbae49a | Balazs Lecz | ss = ssconf.SimpleStore()
|
496 | d3b790bb | Balazs Lecz | uid_pool = uidpool.ParseUidPool(ss.GetUidPool(), separator="\\n")
|
497 | 0fbae49a | Balazs Lecz |
|
498 | 0fbae49a | Balazs Lecz | """
|
499 | 0fbae49a | Balazs Lecz | data = self._ReadFile(constants.SS_UID_POOL)
|
500 | 0fbae49a | Balazs Lecz | return data
|
501 | 0fbae49a | Balazs Lecz | |
502 | 868a98ca | Manuel Franceschini | def GetPrimaryIPFamily(self): |
503 | 868a98ca | Manuel Franceschini | """Return the cluster-wide primary address family.
|
504 | 868a98ca | Manuel Franceschini |
|
505 | 868a98ca | Manuel Franceschini | """
|
506 | 868a98ca | Manuel Franceschini | try:
|
507 | 7dd999fc | Manuel Franceschini | return int(self._ReadFile(constants.SS_PRIMARY_IP_FAMILY, |
508 | 7dd999fc | Manuel Franceschini | default=netutils.IP4Address.family)) |
509 | 868a98ca | Manuel Franceschini | except (ValueError, TypeError), err: |
510 | 868a98ca | Manuel Franceschini | raise errors.ConfigurationError("Error while trying to parse primary ip" |
511 | 868a98ca | Manuel Franceschini | " family: %s" % err)
|
512 | 868a98ca | Manuel Franceschini | |
513 | 93384844 | Iustin Pop | |
514 | b33e986b | Iustin Pop | def GetMasterAndMyself(ss=None): |
515 | b33e986b | Iustin Pop | """Get the master node and my own hostname.
|
516 | b33e986b | Iustin Pop |
|
517 | b33e986b | Iustin Pop | This can be either used for a 'soft' check (compared to CheckMaster,
|
518 | b33e986b | Iustin Pop | which exits) or just for computing both at the same time.
|
519 | b33e986b | Iustin Pop |
|
520 | b33e986b | Iustin Pop | The function does not handle any errors, these should be handled in
|
521 | b33e986b | Iustin Pop | the caller (errors.ConfigurationError, errors.ResolverError).
|
522 | b33e986b | Iustin Pop |
|
523 | 8135a2db | Iustin Pop | @param ss: either a sstore.SimpleConfigReader or a
|
524 | 8135a2db | Iustin Pop | sstore.SimpleStore instance
|
525 | 8135a2db | Iustin Pop | @rtype: tuple
|
526 | 8135a2db | Iustin Pop | @return: a tuple (master node name, my own name)
|
527 | 8135a2db | Iustin Pop |
|
528 | b33e986b | Iustin Pop | """
|
529 | b33e986b | Iustin Pop | if ss is None: |
530 | 93384844 | Iustin Pop | ss = SimpleStore() |
531 | b705c7a6 | Manuel Franceschini | return ss.GetMasterNode(), netutils.Hostname.GetSysName()
|
532 | b33e986b | Iustin Pop | |
533 | 06dc5b44 | Iustin Pop | |
534 | b33e986b | Iustin Pop | def CheckMaster(debug, ss=None): |
535 | 5675cd1f | Iustin Pop | """Checks the node setup.
|
536 | 5675cd1f | Iustin Pop |
|
537 | 5675cd1f | Iustin Pop | If this is the master, the function will return. Otherwise it will
|
538 | 5675cd1f | Iustin Pop | exit with an exit code based on the node status.
|
539 | 5675cd1f | Iustin Pop |
|
540 | 5675cd1f | Iustin Pop | """
|
541 | 5675cd1f | Iustin Pop | try:
|
542 | b33e986b | Iustin Pop | master_name, myself = GetMasterAndMyself(ss) |
543 | 5675cd1f | Iustin Pop | except errors.ConfigurationError, err:
|
544 | 5675cd1f | Iustin Pop | print "Cluster configuration incomplete: '%s'" % str(err) |
545 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
546 | 5675cd1f | Iustin Pop | except errors.ResolverError, err:
|
547 | 5675cd1f | Iustin Pop | sys.stderr.write("Cannot resolve my own name (%s)\n" % err.args[0]) |
548 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
549 | 5675cd1f | Iustin Pop | |
550 | b33e986b | Iustin Pop | if myself != master_name:
|
551 | 5675cd1f | Iustin Pop | if debug:
|
552 | 5675cd1f | Iustin Pop | sys.stderr.write("Not master, exiting.\n")
|
553 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NOTMASTER) |