root / lib / ssconf.py @ 560cbec1
History | View | Annotate | Download (14.1 kB)
1 | 2f31098c | Iustin Pop | #
|
---|---|---|---|
2 | a8083063 | Iustin Pop | #
|
3 | a8083063 | Iustin Pop | |
4 | 856c67e1 | Michael Hanselmann | # Copyright (C) 2006, 2007, 2008 Google Inc.
|
5 | a8083063 | Iustin Pop | #
|
6 | a8083063 | Iustin Pop | # This program is free software; you can redistribute it and/or modify
|
7 | a8083063 | Iustin Pop | # it under the terms of the GNU General Public License as published by
|
8 | a8083063 | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
|
9 | a8083063 | Iustin Pop | # (at your option) any later version.
|
10 | a8083063 | Iustin Pop | #
|
11 | a8083063 | Iustin Pop | # This program is distributed in the hope that it will be useful, but
|
12 | a8083063 | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | a8083063 | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | a8083063 | Iustin Pop | # General Public License for more details.
|
15 | a8083063 | Iustin Pop | #
|
16 | a8083063 | Iustin Pop | # You should have received a copy of the GNU General Public License
|
17 | a8083063 | Iustin Pop | # along with this program; if not, write to the Free Software
|
18 | a8083063 | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 | a8083063 | Iustin Pop | # 02110-1301, USA.
|
20 | a8083063 | Iustin Pop | |
21 | a8083063 | Iustin Pop | |
22 | a8083063 | Iustin Pop | """Global Configuration data for Ganeti.
|
23 | a8083063 | Iustin Pop |
|
24 | a8083063 | Iustin Pop | This module provides the interface to a special case of cluster
|
25 | a8083063 | Iustin Pop | configuration data, which is mostly static and available to all nodes.
|
26 | a8083063 | Iustin Pop |
|
27 | a8083063 | Iustin Pop | """
|
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
|
41 | 0c223ea9 | Michael Hanselmann | |
42 | 03d1dba2 | Michael Hanselmann | RE_VALID_SSCONF_NAME = re.compile(r'^[-_a-z0-9]+$')
|
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.
|
47 | 856c67e1 | Michael Hanselmann |
|
48 | 856c67e1 | Michael Hanselmann | """
|
49 | 856c67e1 | Michael Hanselmann | def __init__(self, file_name=constants.CLUSTER_CONF_FILE): |
50 | 856c67e1 | Michael Hanselmann | """Initializes this class.
|
51 | 856c67e1 | Michael Hanselmann |
|
52 | 856c67e1 | Michael Hanselmann | @type file_name: string
|
53 | 856c67e1 | Michael Hanselmann | @param file_name: Configuration file path
|
54 | 856c67e1 | Michael Hanselmann |
|
55 | 856c67e1 | Michael Hanselmann | """
|
56 | 856c67e1 | Michael Hanselmann | self._file_name = file_name
|
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._inst_ips_by_link = None |
63 | cd195419 | Guido Trotter | self._ip_to_inst_by_link = None |
64 | 099c52ad | Iustin Pop | self._instances_ips = 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_*
|
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.
|
73 | 1fe93c75 | Guido Trotter |
|
74 | 7bcc78e4 | Guido Trotter | @type force: boolean
|
75 | 7bcc78e4 | Guido Trotter | @param force: whether to force the reload without checking the mtime
|
76 | 7bcc78e4 | Guido Trotter | @rtype: boolean
|
77 | 4d4a651d | Michael Hanselmann | @return: boolean value that says whether we reloaded the configuration or
|
78 | 4d4a651d | Michael Hanselmann | not (because we decided it was already up-to-date)
|
79 | 7bcc78e4 | Guido Trotter |
|
80 | 1fe93c75 | Guido Trotter | """
|
81 | d4c1bd12 | Guido Trotter | try:
|
82 | d4c1bd12 | Guido Trotter | cfg_stat = os.stat(self._file_name)
|
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))
|
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):
|
93 | 7bcc78e4 | Guido Trotter | self._last_inode = inode
|
94 | 7bcc78e4 | Guido Trotter | self._last_mtime = mtime
|
95 | 7bcc78e4 | Guido Trotter | self._last_size = size
|
96 | 69b99987 | Michael Hanselmann | else:
|
97 | 69b99987 | Michael Hanselmann | # Don't reload
|
98 | 7bcc78e4 | Guido Trotter | return False |
99 | 7bcc78e4 | Guido Trotter | |
100 | 01cf7dbe | Guido Trotter | try:
|
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))
|
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))
|
108 | 856c67e1 | Michael Hanselmann | |
109 | cd195419 | Guido Trotter | self._ip_to_inst_by_link = {}
|
110 | d01ae714 | Luca Bigliardi | self._instances_ips = []
|
111 | 23824641 | Luca Bigliardi | self._inst_ips_by_link = {}
|
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 | 23824641 | Luca Bigliardi | params = objects.FillDict(c_nparams, nic['nicparams'])
|
118 | 23824641 | Luca Bigliardi | if not params['link'] in self._inst_ips_by_link: |
119 | 23824641 | Luca Bigliardi | self._inst_ips_by_link[params['link']] = [] |
120 | cd195419 | Guido Trotter | self._ip_to_inst_by_link[params['link']] = {} |
121 | cd195419 | Guido Trotter | self._ip_to_inst_by_link[params['link']][nic['ip']] = iname |
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 = []
|
125 | efbb4fd2 | Luca Bigliardi | self._mc_primary_ips = []
|
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
|
135 | ad8b2f9b | Guido Trotter | # _Load function as Reload.
|
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
|
173 | e843991b | Guido Trotter |
|
174 | e843991b | Guido Trotter | @type node: string
|
175 | e843991b | Guido Trotter | @param node: node name
|
176 | e843991b | Guido Trotter | @rtype: (bool, bool, bool)
|
177 | e843991b | Guido Trotter | @return: (master_candidate, drained, offline) (or None if no such node)
|
178 | e843991b | Guido Trotter |
|
179 | e843991b | Guido Trotter | """
|
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
|
187 | e843991b | Guido Trotter | |
188 | cd195419 | Guido Trotter | def GetInstanceByLinkIp(self, ip, link): |
189 | 9d099698 | Guido Trotter | """Get instance name from its link and ip address.
|
190 | 9d099698 | Guido Trotter |
|
191 | 9d099698 | Guido Trotter | @type ip: string
|
192 | 9d099698 | Guido Trotter | @param ip: ip address
|
193 | 9d099698 | Guido Trotter | @type link: string
|
194 | 9d099698 | Guido Trotter | @param link: nic link
|
195 | 9d099698 | Guido Trotter | @rtype: string
|
196 | 9d099698 | Guido Trotter | @return: instance name
|
197 | 9d099698 | Guido Trotter |
|
198 | 9d099698 | Guido Trotter | """
|
199 | cd195419 | Guido Trotter | if not link: |
200 | cd195419 | Guido Trotter | link = self.GetDefaultNicLink()
|
201 | cd195419 | Guido Trotter | if not link in self._ip_to_inst_by_link: |
202 | ae130c81 | Guido Trotter | return None |
203 | cd195419 | Guido Trotter | if not ip in self._ip_to_inst_by_link[link]: |
204 | cd195419 | Guido Trotter | return None |
205 | cd195419 | Guido Trotter | return self._ip_to_inst_by_link[link][ip] |
206 | ae130c81 | Guido Trotter | |
207 | ae130c81 | Guido Trotter | def GetNodePrimaryIp(self, node): |
208 | ae130c81 | Guido Trotter | """Get a node's primary ip
|
209 | ae130c81 | Guido Trotter |
|
210 | ae130c81 | Guido Trotter | @type node: string
|
211 | ae130c81 | Guido Trotter | @param node: node name
|
212 | ae130c81 | Guido Trotter | @rtype: string, or None
|
213 | ae130c81 | Guido Trotter | @return: node's primary ip, or None if no such node
|
214 | ae130c81 | Guido Trotter |
|
215 | ae130c81 | Guido Trotter | """
|
216 | ae130c81 | Guido Trotter | if node not in self._config_data["nodes"]: |
217 | ae130c81 | Guido Trotter | return None |
218 | ae130c81 | Guido Trotter | return self._config_data["nodes"][node]["primary_ip"] |
219 | ae130c81 | Guido Trotter | |
220 | ae130c81 | Guido Trotter | def GetInstancePrimaryNode(self, instance): |
221 | ae130c81 | Guido Trotter | """Get an instance's primary node
|
222 | ae130c81 | Guido Trotter |
|
223 | ae130c81 | Guido Trotter | @type instance: string
|
224 | ae130c81 | Guido Trotter | @param instance: instance name
|
225 | ae130c81 | Guido Trotter | @rtype: string, or None
|
226 | ae130c81 | Guido Trotter | @return: primary node, or None if no such instance
|
227 | ae130c81 | Guido Trotter |
|
228 | ae130c81 | Guido Trotter | """
|
229 | ae130c81 | Guido Trotter | if instance not in self._config_data["instances"]: |
230 | ae130c81 | Guido Trotter | return None |
231 | ae130c81 | Guido Trotter | return self._config_data["instances"][instance]["primary_node"] |
232 | ae130c81 | Guido Trotter | |
233 | efbb4fd2 | Luca Bigliardi | def GetNodesPrimaryIps(self): |
234 | efbb4fd2 | Luca Bigliardi | return self._nodes_primary_ips |
235 | efbb4fd2 | Luca Bigliardi | |
236 | efbb4fd2 | Luca Bigliardi | def GetMasterCandidatesPrimaryIps(self): |
237 | efbb4fd2 | Luca Bigliardi | return self._mc_primary_ips |
238 | efbb4fd2 | Luca Bigliardi | |
239 | 23824641 | Luca Bigliardi | def GetInstancesIps(self, link): |
240 | 9d099698 | Guido Trotter | """Get list of nic ips connected to a certain link.
|
241 | 9d099698 | Guido Trotter |
|
242 | 9d099698 | Guido Trotter | @type link: string
|
243 | 9d099698 | Guido Trotter | @param link: nic link
|
244 | 9d099698 | Guido Trotter | @rtype: list
|
245 | 9d099698 | Guido Trotter | @return: list of ips connected to that link
|
246 | 9d099698 | Guido Trotter |
|
247 | 9d099698 | Guido Trotter | """
|
248 | cd195419 | Guido Trotter | if not link: |
249 | cd195419 | Guido Trotter | link = self.GetDefaultNicLink()
|
250 | cd195419 | Guido Trotter | |
251 | 23824641 | Luca Bigliardi | if link in self._inst_ips_by_link: |
252 | 23824641 | Luca Bigliardi | return self._inst_ips_by_link[link] |
253 | 23824641 | Luca Bigliardi | else:
|
254 | 23824641 | Luca Bigliardi | return []
|
255 | d01ae714 | Luca Bigliardi | |
256 | 856c67e1 | Michael Hanselmann | |
257 | 93384844 | Iustin Pop | class SimpleStore(object): |
258 | 93384844 | Iustin Pop | """Interface to static cluster data.
|
259 | 93384844 | Iustin Pop |
|
260 | 93384844 | Iustin Pop | This is different that the config.ConfigWriter and
|
261 | 93384844 | Iustin Pop | SimpleConfigReader classes in that it holds data that will always be
|
262 | 93384844 | Iustin Pop | present, even on nodes which don't have all the cluster data.
|
263 | 93384844 | Iustin Pop |
|
264 | 93384844 | Iustin Pop | Other particularities of the datastore:
|
265 | 93384844 | Iustin Pop | - keys are restricted to predefined values
|
266 | 93384844 | Iustin Pop |
|
267 | 93384844 | Iustin Pop | """
|
268 | 93384844 | Iustin Pop | _SS_FILEPREFIX = "ssconf_"
|
269 | 93384844 | Iustin Pop | _VALID_KEYS = ( |
270 | 93384844 | Iustin Pop | constants.SS_CLUSTER_NAME, |
271 | 5d60b3bd | Iustin Pop | constants.SS_CLUSTER_TAGS, |
272 | 93384844 | Iustin Pop | constants.SS_FILE_STORAGE_DIR, |
273 | f56618e0 | Iustin Pop | constants.SS_MASTER_CANDIDATES, |
274 | 8113a52e | Luca Bigliardi | constants.SS_MASTER_CANDIDATES_IPS, |
275 | 93384844 | Iustin Pop | constants.SS_MASTER_IP, |
276 | 93384844 | Iustin Pop | constants.SS_MASTER_NETDEV, |
277 | 93384844 | Iustin Pop | constants.SS_MASTER_NODE, |
278 | 93384844 | Iustin Pop | constants.SS_NODE_LIST, |
279 | f9780ccd | Luca Bigliardi | constants.SS_NODE_PRIMARY_IPS, |
280 | f9780ccd | Luca Bigliardi | constants.SS_NODE_SECONDARY_IPS, |
281 | a3316e4a | Iustin Pop | constants.SS_OFFLINE_NODES, |
282 | 81a49123 | Iustin Pop | constants.SS_ONLINE_NODES, |
283 | 81a49123 | Iustin Pop | constants.SS_INSTANCE_LIST, |
284 | 8a113c7a | Iustin Pop | constants.SS_RELEASE_VERSION, |
285 | 4f7a6a10 | Iustin Pop | constants.SS_HYPERVISOR_LIST, |
286 | 5c465a95 | Iustin Pop | constants.SS_MAINTAIN_NODE_HEALTH, |
287 | 0fbae49a | Balazs Lecz | constants.SS_UID_POOL, |
288 | 93384844 | Iustin Pop | ) |
289 | 93384844 | Iustin Pop | _MAX_SIZE = 131072
|
290 | 93384844 | Iustin Pop | |
291 | 93384844 | Iustin Pop | def __init__(self, cfg_location=None): |
292 | 93384844 | Iustin Pop | if cfg_location is None: |
293 | 93384844 | Iustin Pop | self._cfg_dir = constants.DATA_DIR
|
294 | 93384844 | Iustin Pop | else:
|
295 | 93384844 | Iustin Pop | self._cfg_dir = cfg_location
|
296 | 93384844 | Iustin Pop | |
297 | 93384844 | Iustin Pop | def KeyToFilename(self, key): |
298 | 93384844 | Iustin Pop | """Convert a given key into filename.
|
299 | 93384844 | Iustin Pop |
|
300 | 93384844 | Iustin Pop | """
|
301 | 93384844 | Iustin Pop | if key not in self._VALID_KEYS: |
302 | 93384844 | Iustin Pop | raise errors.ProgrammerError("Invalid key requested from SSConf: '%s'" |
303 | 93384844 | Iustin Pop | % str(key))
|
304 | 93384844 | Iustin Pop | |
305 | 93384844 | Iustin Pop | filename = self._cfg_dir + '/' + self._SS_FILEPREFIX + key |
306 | 93384844 | Iustin Pop | return filename
|
307 | 93384844 | Iustin Pop | |
308 | 93384844 | Iustin Pop | def _ReadFile(self, key): |
309 | 93384844 | Iustin Pop | """Generic routine to read keys.
|
310 | 93384844 | Iustin Pop |
|
311 | 93384844 | Iustin Pop | This will read the file which holds the value requested. Errors
|
312 | 93384844 | Iustin Pop | will be changed into ConfigurationErrors.
|
313 | 93384844 | Iustin Pop |
|
314 | 93384844 | Iustin Pop | """
|
315 | 93384844 | Iustin Pop | filename = self.KeyToFilename(key)
|
316 | 93384844 | Iustin Pop | try:
|
317 | 920b5878 | Guido Trotter | data = utils.ReadFile(filename, size=self._MAX_SIZE)
|
318 | 93384844 | Iustin Pop | except EnvironmentError, err: |
319 | 93384844 | Iustin Pop | raise errors.ConfigurationError("Can't read from the ssconf file:" |
320 | 93384844 | Iustin Pop | " '%s'" % str(err)) |
321 | 920b5878 | Guido Trotter | data = data.rstrip('\n')
|
322 | 93384844 | Iustin Pop | return data
|
323 | 93384844 | Iustin Pop | |
324 | 89b14f05 | Iustin Pop | def WriteFiles(self, values): |
325 | 89b14f05 | Iustin Pop | """Writes ssconf files used by external scripts.
|
326 | 89b14f05 | Iustin Pop |
|
327 | 89b14f05 | Iustin Pop | @type values: dict
|
328 | 89b14f05 | Iustin Pop | @param values: Dictionary of (name, value)
|
329 | 89b14f05 | Iustin Pop |
|
330 | 89b14f05 | Iustin Pop | """
|
331 | b4478d34 | Michael Hanselmann | ssconf_lock = utils.FileLock.Open(constants.SSCONF_LOCK_FILE) |
332 | 89b14f05 | Iustin Pop | |
333 | 89b14f05 | Iustin Pop | # Get lock while writing files
|
334 | 89b14f05 | Iustin Pop | ssconf_lock.Exclusive(blocking=True, timeout=SSCONF_LOCK_TIMEOUT)
|
335 | 89b14f05 | Iustin Pop | try:
|
336 | 89b14f05 | Iustin Pop | for name, value in values.iteritems(): |
337 | 02b31f32 | Iustin Pop | if value and not value.endswith("\n"): |
338 | 89b14f05 | Iustin Pop | value += "\n"
|
339 | 999847c8 | Guido Trotter | if len(value) > self._MAX_SIZE: |
340 | 999847c8 | Guido Trotter | raise errors.ConfigurationError("ssconf file %s above maximum size" % |
341 | 999847c8 | Guido Trotter | name) |
342 | 81a49123 | Iustin Pop | utils.WriteFile(self.KeyToFilename(name), data=value, mode=0444) |
343 | 89b14f05 | Iustin Pop | finally:
|
344 | 89b14f05 | Iustin Pop | ssconf_lock.Unlock() |
345 | 89b14f05 | Iustin Pop | |
346 | 93384844 | Iustin Pop | def GetFileList(self): |
347 | 93384844 | Iustin Pop | """Return the list of all config files.
|
348 | 93384844 | Iustin Pop |
|
349 | 93384844 | Iustin Pop | This is used for computing node replication data.
|
350 | 93384844 | Iustin Pop |
|
351 | 93384844 | Iustin Pop | """
|
352 | 93384844 | Iustin Pop | return [self.KeyToFilename(key) for key in self._VALID_KEYS] |
353 | 93384844 | Iustin Pop | |
354 | 93384844 | Iustin Pop | def GetClusterName(self): |
355 | 93384844 | Iustin Pop | """Get the cluster name.
|
356 | 93384844 | Iustin Pop |
|
357 | 93384844 | Iustin Pop | """
|
358 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_CLUSTER_NAME) |
359 | 93384844 | Iustin Pop | |
360 | 93384844 | Iustin Pop | def GetFileStorageDir(self): |
361 | 93384844 | Iustin Pop | """Get the file storage dir.
|
362 | 93384844 | Iustin Pop |
|
363 | 93384844 | Iustin Pop | """
|
364 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_FILE_STORAGE_DIR) |
365 | 93384844 | Iustin Pop | |
366 | f56618e0 | Iustin Pop | def GetMasterCandidates(self): |
367 | f56618e0 | Iustin Pop | """Return the list of master candidates.
|
368 | f56618e0 | Iustin Pop |
|
369 | f56618e0 | Iustin Pop | """
|
370 | f56618e0 | Iustin Pop | data = self._ReadFile(constants.SS_MASTER_CANDIDATES)
|
371 | f56618e0 | Iustin Pop | nl = data.splitlines(False)
|
372 | f56618e0 | Iustin Pop | return nl
|
373 | f56618e0 | Iustin Pop | |
374 | 8113a52e | Luca Bigliardi | def GetMasterCandidatesIPList(self): |
375 | 8113a52e | Luca Bigliardi | """Return the list of master candidates' primary IP.
|
376 | 8113a52e | Luca Bigliardi |
|
377 | 8113a52e | Luca Bigliardi | """
|
378 | 8113a52e | Luca Bigliardi | data = self._ReadFile(constants.SS_MASTER_CANDIDATES_IPS)
|
379 | 8113a52e | Luca Bigliardi | nl = data.splitlines(False)
|
380 | 8113a52e | Luca Bigliardi | return nl
|
381 | 8113a52e | Luca Bigliardi | |
382 | 93384844 | Iustin Pop | def GetMasterIP(self): |
383 | 93384844 | Iustin Pop | """Get the IP of the master node for this cluster.
|
384 | 93384844 | Iustin Pop |
|
385 | 93384844 | Iustin Pop | """
|
386 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_IP) |
387 | 93384844 | Iustin Pop | |
388 | 93384844 | Iustin Pop | def GetMasterNetdev(self): |
389 | 93384844 | Iustin Pop | """Get the netdev to which we'll add the master ip.
|
390 | 93384844 | Iustin Pop |
|
391 | 93384844 | Iustin Pop | """
|
392 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NETDEV) |
393 | 93384844 | Iustin Pop | |
394 | 93384844 | Iustin Pop | def GetMasterNode(self): |
395 | 93384844 | Iustin Pop | """Get the hostname of the master node for this cluster.
|
396 | 93384844 | Iustin Pop |
|
397 | 93384844 | Iustin Pop | """
|
398 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NODE) |
399 | 93384844 | Iustin Pop | |
400 | 93384844 | Iustin Pop | def GetNodeList(self): |
401 | 93384844 | Iustin Pop | """Return the list of cluster nodes.
|
402 | 93384844 | Iustin Pop |
|
403 | 93384844 | Iustin Pop | """
|
404 | 93384844 | Iustin Pop | data = self._ReadFile(constants.SS_NODE_LIST)
|
405 | 93384844 | Iustin Pop | nl = data.splitlines(False)
|
406 | 93384844 | Iustin Pop | return nl
|
407 | 93384844 | Iustin Pop | |
408 | f9780ccd | Luca Bigliardi | def GetNodePrimaryIPList(self): |
409 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' primary IP.
|
410 | f9780ccd | Luca Bigliardi |
|
411 | f9780ccd | Luca Bigliardi | """
|
412 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_PRIMARY_IPS)
|
413 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
|
414 | f9780ccd | Luca Bigliardi | return nl
|
415 | f9780ccd | Luca Bigliardi | |
416 | f9780ccd | Luca Bigliardi | def GetNodeSecondaryIPList(self): |
417 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' secondary IP.
|
418 | f9780ccd | Luca Bigliardi |
|
419 | f9780ccd | Luca Bigliardi | """
|
420 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_SECONDARY_IPS)
|
421 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
|
422 | f9780ccd | Luca Bigliardi | return nl
|
423 | f9780ccd | Luca Bigliardi | |
424 | 25e39bfa | Iustin Pop | def GetClusterTags(self): |
425 | 25e39bfa | Iustin Pop | """Return the cluster tags.
|
426 | 25e39bfa | Iustin Pop |
|
427 | 25e39bfa | Iustin Pop | """
|
428 | 25e39bfa | Iustin Pop | data = self._ReadFile(constants.SS_CLUSTER_TAGS)
|
429 | 25e39bfa | Iustin Pop | nl = data.splitlines(False)
|
430 | 25e39bfa | Iustin Pop | return nl
|
431 | 25e39bfa | Iustin Pop | |
432 | 4f7a6a10 | Iustin Pop | def GetHypervisorList(self): |
433 | 4f7a6a10 | Iustin Pop | """Return the list of enabled hypervisors.
|
434 | 4f7a6a10 | Iustin Pop |
|
435 | 4f7a6a10 | Iustin Pop | """
|
436 | 4f7a6a10 | Iustin Pop | data = self._ReadFile(constants.SS_HYPERVISOR_LIST)
|
437 | 4f7a6a10 | Iustin Pop | nl = data.splitlines(False)
|
438 | 4f7a6a10 | Iustin Pop | return nl
|
439 | 4f7a6a10 | Iustin Pop | |
440 | 5c465a95 | Iustin Pop | def GetMaintainNodeHealth(self): |
441 | 5c465a95 | Iustin Pop | """Return the value of the maintain_node_health option.
|
442 | 5c465a95 | Iustin Pop |
|
443 | 5c465a95 | Iustin Pop | """
|
444 | 5c465a95 | Iustin Pop | data = self._ReadFile(constants.SS_MAINTAIN_NODE_HEALTH)
|
445 | 5c465a95 | Iustin Pop | # we rely on the bool serialization here
|
446 | 5c465a95 | Iustin Pop | return data == "True" |
447 | 5c465a95 | Iustin Pop | |
448 | 0fbae49a | Balazs Lecz | def GetUidPool(self): |
449 | 0fbae49a | Balazs Lecz | """Return the user-id pool definition string.
|
450 | 0fbae49a | Balazs Lecz |
|
451 | 0fbae49a | Balazs Lecz | The separator character is a newline.
|
452 | 0fbae49a | Balazs Lecz |
|
453 | d3b790bb | Balazs Lecz | The return value can be parsed using uidpool.ParseUidPool()::
|
454 | d3b790bb | Balazs Lecz |
|
455 | 0fbae49a | Balazs Lecz | ss = ssconf.SimpleStore()
|
456 | d3b790bb | Balazs Lecz | uid_pool = uidpool.ParseUidPool(ss.GetUidPool(), separator="\\n")
|
457 | 0fbae49a | Balazs Lecz |
|
458 | 0fbae49a | Balazs Lecz | """
|
459 | 0fbae49a | Balazs Lecz | data = self._ReadFile(constants.SS_UID_POOL)
|
460 | 0fbae49a | Balazs Lecz | return data
|
461 | 0fbae49a | Balazs Lecz | |
462 | 93384844 | Iustin Pop | |
463 | b33e986b | Iustin Pop | def GetMasterAndMyself(ss=None): |
464 | b33e986b | Iustin Pop | """Get the master node and my own hostname.
|
465 | b33e986b | Iustin Pop |
|
466 | b33e986b | Iustin Pop | This can be either used for a 'soft' check (compared to CheckMaster,
|
467 | b33e986b | Iustin Pop | which exits) or just for computing both at the same time.
|
468 | b33e986b | Iustin Pop |
|
469 | b33e986b | Iustin Pop | The function does not handle any errors, these should be handled in
|
470 | b33e986b | Iustin Pop | the caller (errors.ConfigurationError, errors.ResolverError).
|
471 | b33e986b | Iustin Pop |
|
472 | 8135a2db | Iustin Pop | @param ss: either a sstore.SimpleConfigReader or a
|
473 | 8135a2db | Iustin Pop | sstore.SimpleStore instance
|
474 | 8135a2db | Iustin Pop | @rtype: tuple
|
475 | 8135a2db | Iustin Pop | @return: a tuple (master node name, my own name)
|
476 | 8135a2db | Iustin Pop |
|
477 | b33e986b | Iustin Pop | """
|
478 | b33e986b | Iustin Pop | if ss is None: |
479 | 93384844 | Iustin Pop | ss = SimpleStore() |
480 | b33e986b | Iustin Pop | return ss.GetMasterNode(), utils.HostInfo().name
|
481 | b33e986b | Iustin Pop | |
482 | 06dc5b44 | Iustin Pop | |
483 | b33e986b | Iustin Pop | def CheckMaster(debug, ss=None): |
484 | 5675cd1f | Iustin Pop | """Checks the node setup.
|
485 | 5675cd1f | Iustin Pop |
|
486 | 5675cd1f | Iustin Pop | If this is the master, the function will return. Otherwise it will
|
487 | 5675cd1f | Iustin Pop | exit with an exit code based on the node status.
|
488 | 5675cd1f | Iustin Pop |
|
489 | 5675cd1f | Iustin Pop | """
|
490 | 5675cd1f | Iustin Pop | try:
|
491 | b33e986b | Iustin Pop | master_name, myself = GetMasterAndMyself(ss) |
492 | 5675cd1f | Iustin Pop | except errors.ConfigurationError, err:
|
493 | 5675cd1f | Iustin Pop | print "Cluster configuration incomplete: '%s'" % str(err) |
494 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
495 | 5675cd1f | Iustin Pop | except errors.ResolverError, err:
|
496 | 5675cd1f | Iustin Pop | sys.stderr.write("Cannot resolve my own name (%s)\n" % err.args[0]) |
497 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
498 | 5675cd1f | Iustin Pop | |
499 | b33e986b | Iustin Pop | if myself != master_name:
|
500 | 5675cd1f | Iustin Pop | if debug:
|
501 | 5675cd1f | Iustin Pop | sys.stderr.write("Not master, exiting.\n")
|
502 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NOTMASTER) |