root / lib / ssconf.py @ f22433c0
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2 | a8083063 | Iustin Pop | #
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3 | a8083063 | Iustin Pop | |
4 | c09254c2 | Iustin Pop | # Copyright (C) 2006, 2007, 2008, 2010, 2011, 2012 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 | 7dd999fc | Manuel Franceschini | import errno |
31 | dffa96d6 | Michael Hanselmann | import logging |
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 | a744b676 | Manuel Franceschini | from ganeti import netutils |
37 | f45c5c09 | Michael Hanselmann | from ganeti import pathutils |
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 | fb486969 | Michael Hanselmann | #: Valid ssconf keys
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43 | fb486969 | Michael Hanselmann | _VALID_KEYS = frozenset([
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44 | fb486969 | Michael Hanselmann | constants.SS_CLUSTER_NAME, |
45 | fb486969 | Michael Hanselmann | constants.SS_CLUSTER_TAGS, |
46 | fb486969 | Michael Hanselmann | constants.SS_FILE_STORAGE_DIR, |
47 | fb486969 | Michael Hanselmann | constants.SS_SHARED_FILE_STORAGE_DIR, |
48 | fb486969 | Michael Hanselmann | constants.SS_MASTER_CANDIDATES, |
49 | fb486969 | Michael Hanselmann | constants.SS_MASTER_CANDIDATES_IPS, |
50 | fb486969 | Michael Hanselmann | constants.SS_MASTER_IP, |
51 | fb486969 | Michael Hanselmann | constants.SS_MASTER_NETDEV, |
52 | fb486969 | Michael Hanselmann | constants.SS_MASTER_NETMASK, |
53 | fb486969 | Michael Hanselmann | constants.SS_MASTER_NODE, |
54 | fb486969 | Michael Hanselmann | constants.SS_NODE_LIST, |
55 | fb486969 | Michael Hanselmann | constants.SS_NODE_PRIMARY_IPS, |
56 | fb486969 | Michael Hanselmann | constants.SS_NODE_SECONDARY_IPS, |
57 | fb486969 | Michael Hanselmann | constants.SS_OFFLINE_NODES, |
58 | fb486969 | Michael Hanselmann | constants.SS_ONLINE_NODES, |
59 | fb486969 | Michael Hanselmann | constants.SS_PRIMARY_IP_FAMILY, |
60 | fb486969 | Michael Hanselmann | constants.SS_INSTANCE_LIST, |
61 | fb486969 | Michael Hanselmann | constants.SS_RELEASE_VERSION, |
62 | fb486969 | Michael Hanselmann | constants.SS_HYPERVISOR_LIST, |
63 | fb486969 | Michael Hanselmann | constants.SS_MAINTAIN_NODE_HEALTH, |
64 | fb486969 | Michael Hanselmann | constants.SS_UID_POOL, |
65 | fb486969 | Michael Hanselmann | constants.SS_NODEGROUPS, |
66 | fb486969 | Michael Hanselmann | constants.SS_NETWORKS, |
67 | fb486969 | Michael Hanselmann | ]) |
68 | fb486969 | Michael Hanselmann | |
69 | fb486969 | Michael Hanselmann | #: Maximum size for ssconf files
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70 | fb486969 | Michael Hanselmann | _MAX_SIZE = 128 * 1024 |
71 | fb486969 | Michael Hanselmann | |
72 | 0c223ea9 | Michael Hanselmann | |
73 | 911dfc49 | Michael Hanselmann | def ReadSsconfFile(filename): |
74 | 911dfc49 | Michael Hanselmann | """Reads an ssconf file and verifies its size.
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75 | 911dfc49 | Michael Hanselmann |
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76 | 911dfc49 | Michael Hanselmann | @type filename: string
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77 | 911dfc49 | Michael Hanselmann | @param filename: Path to file
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78 | 911dfc49 | Michael Hanselmann | @rtype: string
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79 | 911dfc49 | Michael Hanselmann | @return: File contents without newlines at the end
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80 | 911dfc49 | Michael Hanselmann | @raise RuntimeError: When the file size exceeds L{_MAX_SIZE}
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81 | 911dfc49 | Michael Hanselmann |
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82 | 911dfc49 | Michael Hanselmann | """
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83 | 911dfc49 | Michael Hanselmann | statcb = utils.FileStatHelper() |
84 | 911dfc49 | Michael Hanselmann | |
85 | 911dfc49 | Michael Hanselmann | data = utils.ReadFile(filename, size=_MAX_SIZE, preread=statcb) |
86 | 911dfc49 | Michael Hanselmann | |
87 | 911dfc49 | Michael Hanselmann | if statcb.st.st_size > _MAX_SIZE:
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88 | 911dfc49 | Michael Hanselmann | msg = ("File '%s' has a size of %s bytes (up to %s allowed)" %
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89 | 911dfc49 | Michael Hanselmann | (filename, statcb.st.st_size, _MAX_SIZE)) |
90 | 911dfc49 | Michael Hanselmann | raise RuntimeError(msg) |
91 | 911dfc49 | Michael Hanselmann | |
92 | 911dfc49 | Michael Hanselmann | return data.rstrip("\n") |
93 | 911dfc49 | Michael Hanselmann | |
94 | 911dfc49 | Michael Hanselmann | |
95 | 93384844 | Iustin Pop | class SimpleStore(object): |
96 | 93384844 | Iustin Pop | """Interface to static cluster data.
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97 | 93384844 | Iustin Pop |
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98 | 93384844 | Iustin Pop | This is different that the config.ConfigWriter and
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99 | 93384844 | Iustin Pop | SimpleConfigReader classes in that it holds data that will always be
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100 | 93384844 | Iustin Pop | present, even on nodes which don't have all the cluster data.
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101 | 93384844 | Iustin Pop |
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102 | 93384844 | Iustin Pop | Other particularities of the datastore:
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103 | 93384844 | Iustin Pop | - keys are restricted to predefined values
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104 | 93384844 | Iustin Pop |
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105 | 93384844 | Iustin Pop | """
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106 | cc7f5bfc | Michael Hanselmann | def __init__(self, cfg_location=None, _lockfile=pathutils.SSCONF_LOCK_FILE): |
107 | 93384844 | Iustin Pop | if cfg_location is None: |
108 | f45c5c09 | Michael Hanselmann | self._cfg_dir = pathutils.DATA_DIR
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109 | 93384844 | Iustin Pop | else:
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110 | 93384844 | Iustin Pop | self._cfg_dir = cfg_location
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111 | 93384844 | Iustin Pop | |
112 | cc7f5bfc | Michael Hanselmann | self._lockfile = _lockfile
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113 | cc7f5bfc | Michael Hanselmann | |
114 | 93384844 | Iustin Pop | def KeyToFilename(self, key): |
115 | 93384844 | Iustin Pop | """Convert a given key into filename.
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116 | 93384844 | Iustin Pop |
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117 | 93384844 | Iustin Pop | """
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118 | fb486969 | Michael Hanselmann | if key not in _VALID_KEYS: |
119 | 93384844 | Iustin Pop | raise errors.ProgrammerError("Invalid key requested from SSConf: '%s'" |
120 | 93384844 | Iustin Pop | % str(key))
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121 | 93384844 | Iustin Pop | |
122 | c09254c2 | Iustin Pop | filename = self._cfg_dir + "/" + constants.SSCONF_FILEPREFIX + key |
123 | 93384844 | Iustin Pop | return filename
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124 | 93384844 | Iustin Pop | |
125 | 7dd999fc | Manuel Franceschini | def _ReadFile(self, key, default=None): |
126 | 93384844 | Iustin Pop | """Generic routine to read keys.
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127 | 93384844 | Iustin Pop |
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128 | 93384844 | Iustin Pop | This will read the file which holds the value requested. Errors
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129 | 93384844 | Iustin Pop | will be changed into ConfigurationErrors.
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130 | 93384844 | Iustin Pop |
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131 | 93384844 | Iustin Pop | """
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132 | 93384844 | Iustin Pop | filename = self.KeyToFilename(key)
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133 | 93384844 | Iustin Pop | try:
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134 | 911dfc49 | Michael Hanselmann | return ReadSsconfFile(filename)
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135 | 93384844 | Iustin Pop | except EnvironmentError, err: |
136 | 7dd999fc | Manuel Franceschini | if err.errno == errno.ENOENT and default is not None: |
137 | 7dd999fc | Manuel Franceschini | return default
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138 | c5ac51bb | Michael Hanselmann | raise errors.ConfigurationError("Can't read ssconf file %s: %s" % |
139 | c5ac51bb | Michael Hanselmann | (filename, str(err)))
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140 | c5ac51bb | Michael Hanselmann | |
141 | 9b4329e9 | Michael Hanselmann | def ReadAll(self): |
142 | 9b4329e9 | Michael Hanselmann | """Reads all keys and returns their values.
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143 | 9b4329e9 | Michael Hanselmann |
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144 | 9b4329e9 | Michael Hanselmann | @rtype: dict
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145 | 9b4329e9 | Michael Hanselmann | @return: Dictionary, ssconf key as key, value as value
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146 | 9b4329e9 | Michael Hanselmann |
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147 | 9b4329e9 | Michael Hanselmann | """
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148 | 9b4329e9 | Michael Hanselmann | result = [] |
149 | 9b4329e9 | Michael Hanselmann | |
150 | 9b4329e9 | Michael Hanselmann | for key in _VALID_KEYS: |
151 | 9b4329e9 | Michael Hanselmann | try:
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152 | 9b4329e9 | Michael Hanselmann | value = self._ReadFile(key)
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153 | 9b4329e9 | Michael Hanselmann | except errors.ConfigurationError:
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154 | 9b4329e9 | Michael Hanselmann | # Ignore non-existing files
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155 | 9b4329e9 | Michael Hanselmann | pass
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156 | 9b4329e9 | Michael Hanselmann | else:
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157 | 9b4329e9 | Michael Hanselmann | result.append((key, value)) |
158 | 9b4329e9 | Michael Hanselmann | |
159 | 9b4329e9 | Michael Hanselmann | return dict(result) |
160 | 9b4329e9 | Michael Hanselmann | |
161 | cc7f5bfc | Michael Hanselmann | def WriteFiles(self, values, dry_run=False): |
162 | 89b14f05 | Iustin Pop | """Writes ssconf files used by external scripts.
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163 | 89b14f05 | Iustin Pop |
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164 | 89b14f05 | Iustin Pop | @type values: dict
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165 | 89b14f05 | Iustin Pop | @param values: Dictionary of (name, value)
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166 | cc7f5bfc | Michael Hanselmann | @type dry_run boolean
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167 | cc7f5bfc | Michael Hanselmann | @param dry_run: Whether to perform a dry run
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168 | 89b14f05 | Iustin Pop |
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169 | 89b14f05 | Iustin Pop | """
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170 | cc7f5bfc | Michael Hanselmann | ssconf_lock = utils.FileLock.Open(self._lockfile)
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171 | 89b14f05 | Iustin Pop | |
172 | 89b14f05 | Iustin Pop | # Get lock while writing files
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173 | 89b14f05 | Iustin Pop | ssconf_lock.Exclusive(blocking=True, timeout=SSCONF_LOCK_TIMEOUT)
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174 | 89b14f05 | Iustin Pop | try:
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175 | 89b14f05 | Iustin Pop | for name, value in values.iteritems(): |
176 | 02b31f32 | Iustin Pop | if value and not value.endswith("\n"): |
177 | 89b14f05 | Iustin Pop | value += "\n"
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178 | cc7f5bfc | Michael Hanselmann | |
179 | fb486969 | Michael Hanselmann | if len(value) > _MAX_SIZE: |
180 | cc7f5bfc | Michael Hanselmann | msg = ("Value '%s' has a length of %s bytes, but only up to %s are"
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181 | cc7f5bfc | Michael Hanselmann | " allowed" % (name, len(value), _MAX_SIZE)) |
182 | cc7f5bfc | Michael Hanselmann | raise errors.ConfigurationError(msg)
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183 | cc7f5bfc | Michael Hanselmann | |
184 | cd57bab6 | Michael Hanselmann | utils.WriteFile(self.KeyToFilename(name), data=value,
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185 | cc7f5bfc | Michael Hanselmann | mode=constants.SS_FILE_PERMS, |
186 | cc7f5bfc | Michael Hanselmann | dry_run=dry_run) |
187 | 89b14f05 | Iustin Pop | finally:
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188 | 89b14f05 | Iustin Pop | ssconf_lock.Unlock() |
189 | 89b14f05 | Iustin Pop | |
190 | 93384844 | Iustin Pop | def GetFileList(self): |
191 | 93384844 | Iustin Pop | """Return the list of all config files.
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192 | 93384844 | Iustin Pop |
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193 | 93384844 | Iustin Pop | This is used for computing node replication data.
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194 | 93384844 | Iustin Pop |
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195 | 93384844 | Iustin Pop | """
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196 | fb486969 | Michael Hanselmann | return [self.KeyToFilename(key) for key in _VALID_KEYS] |
197 | 93384844 | Iustin Pop | |
198 | 93384844 | Iustin Pop | def GetClusterName(self): |
199 | 93384844 | Iustin Pop | """Get the cluster name.
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200 | 93384844 | Iustin Pop |
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201 | 93384844 | Iustin Pop | """
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202 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_CLUSTER_NAME) |
203 | 93384844 | Iustin Pop | |
204 | 93384844 | Iustin Pop | def GetFileStorageDir(self): |
205 | 93384844 | Iustin Pop | """Get the file storage dir.
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206 | 93384844 | Iustin Pop |
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207 | 93384844 | Iustin Pop | """
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208 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_FILE_STORAGE_DIR) |
209 | 93384844 | Iustin Pop | |
210 | 4b97f902 | Apollon Oikonomopoulos | def GetSharedFileStorageDir(self): |
211 | 4b97f902 | Apollon Oikonomopoulos | """Get the shared file storage dir.
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212 | 4b97f902 | Apollon Oikonomopoulos |
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213 | 4b97f902 | Apollon Oikonomopoulos | """
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214 | 4b97f902 | Apollon Oikonomopoulos | return self._ReadFile(constants.SS_SHARED_FILE_STORAGE_DIR) |
215 | 4b97f902 | Apollon Oikonomopoulos | |
216 | f56618e0 | Iustin Pop | def GetMasterCandidates(self): |
217 | f56618e0 | Iustin Pop | """Return the list of master candidates.
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218 | f56618e0 | Iustin Pop |
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219 | f56618e0 | Iustin Pop | """
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220 | f56618e0 | Iustin Pop | data = self._ReadFile(constants.SS_MASTER_CANDIDATES)
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221 | f56618e0 | Iustin Pop | nl = data.splitlines(False)
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222 | f56618e0 | Iustin Pop | return nl
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223 | f56618e0 | Iustin Pop | |
224 | 8113a52e | Luca Bigliardi | def GetMasterCandidatesIPList(self): |
225 | 8113a52e | Luca Bigliardi | """Return the list of master candidates' primary IP.
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226 | 8113a52e | Luca Bigliardi |
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227 | 8113a52e | Luca Bigliardi | """
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228 | 8113a52e | Luca Bigliardi | data = self._ReadFile(constants.SS_MASTER_CANDIDATES_IPS)
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229 | 8113a52e | Luca Bigliardi | nl = data.splitlines(False)
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230 | 8113a52e | Luca Bigliardi | return nl
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231 | 8113a52e | Luca Bigliardi | |
232 | 93384844 | Iustin Pop | def GetMasterIP(self): |
233 | 93384844 | Iustin Pop | """Get the IP of the master node for this cluster.
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234 | 93384844 | Iustin Pop |
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235 | 93384844 | Iustin Pop | """
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236 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_IP) |
237 | 93384844 | Iustin Pop | |
238 | 93384844 | Iustin Pop | def GetMasterNetdev(self): |
239 | 93384844 | Iustin Pop | """Get the netdev to which we'll add the master ip.
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240 | 93384844 | Iustin Pop |
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241 | 93384844 | Iustin Pop | """
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242 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NETDEV) |
243 | 93384844 | Iustin Pop | |
244 | 5a8648eb | Andrea Spadaccini | def GetMasterNetmask(self): |
245 | 186c03b3 | Andrea Spadaccini | """Get the master netmask.
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246 | 5a8648eb | Andrea Spadaccini |
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247 | 5a8648eb | Andrea Spadaccini | """
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248 | 186c03b3 | Andrea Spadaccini | try:
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249 | 186c03b3 | Andrea Spadaccini | return self._ReadFile(constants.SS_MASTER_NETMASK) |
250 | 186c03b3 | Andrea Spadaccini | except errors.ConfigurationError:
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251 | 186c03b3 | Andrea Spadaccini | family = self.GetPrimaryIPFamily()
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252 | 186c03b3 | Andrea Spadaccini | ipcls = netutils.IPAddress.GetClassFromIpFamily(family) |
253 | 186c03b3 | Andrea Spadaccini | return ipcls.iplen
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254 | 5a8648eb | Andrea Spadaccini | |
255 | 93384844 | Iustin Pop | def GetMasterNode(self): |
256 | 93384844 | Iustin Pop | """Get the hostname of the master node for this cluster.
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257 | 93384844 | Iustin Pop |
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258 | 93384844 | Iustin Pop | """
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259 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NODE) |
260 | 93384844 | Iustin Pop | |
261 | 93384844 | Iustin Pop | def GetNodeList(self): |
262 | 93384844 | Iustin Pop | """Return the list of cluster nodes.
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263 | 93384844 | Iustin Pop |
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264 | 93384844 | Iustin Pop | """
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265 | 93384844 | Iustin Pop | data = self._ReadFile(constants.SS_NODE_LIST)
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266 | 93384844 | Iustin Pop | nl = data.splitlines(False)
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267 | 93384844 | Iustin Pop | return nl
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268 | 93384844 | Iustin Pop | |
269 | f9780ccd | Luca Bigliardi | def GetNodePrimaryIPList(self): |
270 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' primary IP.
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271 | f9780ccd | Luca Bigliardi |
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272 | f9780ccd | Luca Bigliardi | """
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273 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_PRIMARY_IPS)
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274 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
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275 | f9780ccd | Luca Bigliardi | return nl
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276 | f9780ccd | Luca Bigliardi | |
277 | f9780ccd | Luca Bigliardi | def GetNodeSecondaryIPList(self): |
278 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' secondary IP.
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279 | f9780ccd | Luca Bigliardi |
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280 | f9780ccd | Luca Bigliardi | """
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281 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_SECONDARY_IPS)
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282 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
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283 | f9780ccd | Luca Bigliardi | return nl
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284 | f9780ccd | Luca Bigliardi | |
285 | 6f076453 | Guido Trotter | def GetNodegroupList(self): |
286 | 6f076453 | Guido Trotter | """Return the list of nodegroups.
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287 | 6f076453 | Guido Trotter |
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288 | 6f076453 | Guido Trotter | """
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289 | 6f076453 | Guido Trotter | data = self._ReadFile(constants.SS_NODEGROUPS)
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290 | 6f076453 | Guido Trotter | nl = data.splitlines(False)
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291 | 6f076453 | Guido Trotter | return nl
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292 | 6f076453 | Guido Trotter | |
293 | f2bd89b3 | Apollon Oikonomopoulos | def GetNetworkList(self): |
294 | f2bd89b3 | Apollon Oikonomopoulos | """Return the list of networks.
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295 | f2bd89b3 | Apollon Oikonomopoulos |
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296 | f2bd89b3 | Apollon Oikonomopoulos | """
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297 | f2bd89b3 | Apollon Oikonomopoulos | data = self._ReadFile(constants.SS_NETWORKS)
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298 | f2bd89b3 | Apollon Oikonomopoulos | nl = data.splitlines(False)
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299 | f2bd89b3 | Apollon Oikonomopoulos | return nl
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300 | f2bd89b3 | Apollon Oikonomopoulos | |
301 | 25e39bfa | Iustin Pop | def GetClusterTags(self): |
302 | 25e39bfa | Iustin Pop | """Return the cluster tags.
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303 | 25e39bfa | Iustin Pop |
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304 | 25e39bfa | Iustin Pop | """
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305 | 25e39bfa | Iustin Pop | data = self._ReadFile(constants.SS_CLUSTER_TAGS)
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306 | 25e39bfa | Iustin Pop | nl = data.splitlines(False)
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307 | 25e39bfa | Iustin Pop | return nl
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308 | 25e39bfa | Iustin Pop | |
309 | 4f7a6a10 | Iustin Pop | def GetHypervisorList(self): |
310 | 4f7a6a10 | Iustin Pop | """Return the list of enabled hypervisors.
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311 | 4f7a6a10 | Iustin Pop |
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312 | 4f7a6a10 | Iustin Pop | """
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313 | 4f7a6a10 | Iustin Pop | data = self._ReadFile(constants.SS_HYPERVISOR_LIST)
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314 | 4f7a6a10 | Iustin Pop | nl = data.splitlines(False)
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315 | 4f7a6a10 | Iustin Pop | return nl
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316 | 4f7a6a10 | Iustin Pop | |
317 | 5c465a95 | Iustin Pop | def GetMaintainNodeHealth(self): |
318 | 5c465a95 | Iustin Pop | """Return the value of the maintain_node_health option.
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319 | 5c465a95 | Iustin Pop |
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320 | 5c465a95 | Iustin Pop | """
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321 | 5c465a95 | Iustin Pop | data = self._ReadFile(constants.SS_MAINTAIN_NODE_HEALTH)
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322 | 5c465a95 | Iustin Pop | # we rely on the bool serialization here
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323 | 5c465a95 | Iustin Pop | return data == "True" |
324 | 5c465a95 | Iustin Pop | |
325 | 0fbae49a | Balazs Lecz | def GetUidPool(self): |
326 | 0fbae49a | Balazs Lecz | """Return the user-id pool definition string.
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327 | 0fbae49a | Balazs Lecz |
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328 | 0fbae49a | Balazs Lecz | The separator character is a newline.
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329 | 0fbae49a | Balazs Lecz |
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330 | d3b790bb | Balazs Lecz | The return value can be parsed using uidpool.ParseUidPool()::
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331 | d3b790bb | Balazs Lecz |
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332 | 0fbae49a | Balazs Lecz | ss = ssconf.SimpleStore()
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333 | d3b790bb | Balazs Lecz | uid_pool = uidpool.ParseUidPool(ss.GetUidPool(), separator="\\n")
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334 | 0fbae49a | Balazs Lecz |
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335 | 0fbae49a | Balazs Lecz | """
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336 | 0fbae49a | Balazs Lecz | data = self._ReadFile(constants.SS_UID_POOL)
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337 | 0fbae49a | Balazs Lecz | return data
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338 | 0fbae49a | Balazs Lecz | |
339 | 868a98ca | Manuel Franceschini | def GetPrimaryIPFamily(self): |
340 | 868a98ca | Manuel Franceschini | """Return the cluster-wide primary address family.
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341 | 868a98ca | Manuel Franceschini |
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342 | 868a98ca | Manuel Franceschini | """
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343 | 868a98ca | Manuel Franceschini | try:
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344 | 7dd999fc | Manuel Franceschini | return int(self._ReadFile(constants.SS_PRIMARY_IP_FAMILY, |
345 | 7dd999fc | Manuel Franceschini | default=netutils.IP4Address.family)) |
346 | 868a98ca | Manuel Franceschini | except (ValueError, TypeError), err: |
347 | c5ac51bb | Michael Hanselmann | raise errors.ConfigurationError("Error while trying to parse primary IP" |
348 | 868a98ca | Manuel Franceschini | " family: %s" % err)
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349 | 868a98ca | Manuel Franceschini | |
350 | 93384844 | Iustin Pop | |
351 | cc7f5bfc | Michael Hanselmann | def WriteSsconfFiles(values, dry_run=False): |
352 | ee501db1 | Michael Hanselmann | """Update all ssconf files.
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353 | ee501db1 | Michael Hanselmann |
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354 | ee501db1 | Michael Hanselmann | Wrapper around L{SimpleStore.WriteFiles}.
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355 | ee501db1 | Michael Hanselmann |
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356 | ee501db1 | Michael Hanselmann | """
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357 | cc7f5bfc | Michael Hanselmann | SimpleStore().WriteFiles(values, dry_run=dry_run) |
358 | ee501db1 | Michael Hanselmann | |
359 | ee501db1 | Michael Hanselmann | |
360 | b33e986b | Iustin Pop | def GetMasterAndMyself(ss=None): |
361 | b33e986b | Iustin Pop | """Get the master node and my own hostname.
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362 | b33e986b | Iustin Pop |
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363 | b33e986b | Iustin Pop | This can be either used for a 'soft' check (compared to CheckMaster,
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364 | b33e986b | Iustin Pop | which exits) or just for computing both at the same time.
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365 | b33e986b | Iustin Pop |
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366 | b33e986b | Iustin Pop | The function does not handle any errors, these should be handled in
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367 | b33e986b | Iustin Pop | the caller (errors.ConfigurationError, errors.ResolverError).
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368 | b33e986b | Iustin Pop |
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369 | 8135a2db | Iustin Pop | @param ss: either a sstore.SimpleConfigReader or a
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370 | 8135a2db | Iustin Pop | sstore.SimpleStore instance
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371 | 8135a2db | Iustin Pop | @rtype: tuple
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372 | 8135a2db | Iustin Pop | @return: a tuple (master node name, my own name)
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373 | 8135a2db | Iustin Pop |
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374 | b33e986b | Iustin Pop | """
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375 | b33e986b | Iustin Pop | if ss is None: |
376 | 93384844 | Iustin Pop | ss = SimpleStore() |
377 | b705c7a6 | Manuel Franceschini | return ss.GetMasterNode(), netutils.Hostname.GetSysName()
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378 | b33e986b | Iustin Pop | |
379 | 06dc5b44 | Iustin Pop | |
380 | b33e986b | Iustin Pop | def CheckMaster(debug, ss=None): |
381 | 5675cd1f | Iustin Pop | """Checks the node setup.
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382 | 5675cd1f | Iustin Pop |
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383 | 5675cd1f | Iustin Pop | If this is the master, the function will return. Otherwise it will
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384 | 5675cd1f | Iustin Pop | exit with an exit code based on the node status.
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385 | 5675cd1f | Iustin Pop |
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386 | 5675cd1f | Iustin Pop | """
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387 | 5675cd1f | Iustin Pop | try:
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388 | b33e986b | Iustin Pop | master_name, myself = GetMasterAndMyself(ss) |
389 | 5675cd1f | Iustin Pop | except errors.ConfigurationError, err:
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390 | 5675cd1f | Iustin Pop | print "Cluster configuration incomplete: '%s'" % str(err) |
391 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
392 | 5675cd1f | Iustin Pop | except errors.ResolverError, err:
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393 | 5675cd1f | Iustin Pop | sys.stderr.write("Cannot resolve my own name (%s)\n" % err.args[0]) |
394 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
395 | 5675cd1f | Iustin Pop | |
396 | b33e986b | Iustin Pop | if myself != master_name:
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397 | 5675cd1f | Iustin Pop | if debug:
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398 | 5675cd1f | Iustin Pop | sys.stderr.write("Not master, exiting.\n")
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399 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NOTMASTER) |
400 | dffa96d6 | Michael Hanselmann | |
401 | dffa96d6 | Michael Hanselmann | |
402 | dffa96d6 | Michael Hanselmann | def VerifyClusterName(name, _cfg_location=None): |
403 | dffa96d6 | Michael Hanselmann | """Verifies cluster name against a local cluster name.
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404 | dffa96d6 | Michael Hanselmann |
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405 | dffa96d6 | Michael Hanselmann | @type name: string
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406 | dffa96d6 | Michael Hanselmann | @param name: Cluster name
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407 | dffa96d6 | Michael Hanselmann |
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408 | dffa96d6 | Michael Hanselmann | """
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409 | dffa96d6 | Michael Hanselmann | sstore = SimpleStore(cfg_location=_cfg_location) |
410 | dffa96d6 | Michael Hanselmann | |
411 | dffa96d6 | Michael Hanselmann | try:
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412 | dffa96d6 | Michael Hanselmann | local_name = sstore.GetClusterName() |
413 | dffa96d6 | Michael Hanselmann | except errors.ConfigurationError, err:
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414 | dffa96d6 | Michael Hanselmann | logging.debug("Can't get local cluster name: %s", err)
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415 | dffa96d6 | Michael Hanselmann | else:
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416 | dffa96d6 | Michael Hanselmann | if name != local_name:
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417 | dffa96d6 | Michael Hanselmann | raise errors.GenericError("Current cluster name is '%s'" % local_name) |
418 | 29a32ce5 | Michael Hanselmann | |
419 | 29a32ce5 | Michael Hanselmann | |
420 | 29a32ce5 | Michael Hanselmann | def VerifyKeys(keys): |
421 | 29a32ce5 | Michael Hanselmann | """Raises an exception if unknown ssconf keys are given.
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422 | 29a32ce5 | Michael Hanselmann |
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423 | 29a32ce5 | Michael Hanselmann | @type keys: sequence
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424 | 29a32ce5 | Michael Hanselmann | @param keys: Key names to verify
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425 | 29a32ce5 | Michael Hanselmann | @raise errors.GenericError: When invalid keys were found
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426 | 29a32ce5 | Michael Hanselmann |
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427 | 29a32ce5 | Michael Hanselmann | """
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428 | 29a32ce5 | Michael Hanselmann | invalid = frozenset(keys) - _VALID_KEYS
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429 | 29a32ce5 | Michael Hanselmann | if invalid:
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430 | 29a32ce5 | Michael Hanselmann | raise errors.GenericError("Invalid ssconf keys: %s" % |
431 | 29a32ce5 | Michael Hanselmann | utils.CommaJoin(sorted(invalid))) |