root / lib / ssconf.py @ 912b2278
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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 | b8028dcf | Michael Hanselmann | from ganeti import compat |
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 | a744b676 | Manuel Franceschini | from ganeti import netutils |
38 | f45c5c09 | Michael Hanselmann | from ganeti import pathutils |
39 | a8083063 | Iustin Pop | |
40 | a8083063 | Iustin Pop | |
41 | 0c223ea9 | Michael Hanselmann | SSCONF_LOCK_TIMEOUT = 10
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42 | 0c223ea9 | Michael Hanselmann | |
43 | fb486969 | Michael Hanselmann | #: Valid ssconf keys
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44 | b8028dcf | Michael Hanselmann | _VALID_KEYS = compat.UniqueFrozenset([ |
45 | fb486969 | Michael Hanselmann | constants.SS_CLUSTER_NAME, |
46 | fb486969 | Michael Hanselmann | constants.SS_CLUSTER_TAGS, |
47 | fb486969 | Michael Hanselmann | constants.SS_FILE_STORAGE_DIR, |
48 | fb486969 | Michael Hanselmann | constants.SS_SHARED_FILE_STORAGE_DIR, |
49 | d3e6fd0e | Santi Raffa | constants.SS_GLUSTER_STORAGE_DIR, |
50 | fb486969 | Michael Hanselmann | constants.SS_MASTER_CANDIDATES, |
51 | fb486969 | Michael Hanselmann | constants.SS_MASTER_CANDIDATES_IPS, |
52 | fb486969 | Michael Hanselmann | constants.SS_MASTER_IP, |
53 | fb486969 | Michael Hanselmann | constants.SS_MASTER_NETDEV, |
54 | fb486969 | Michael Hanselmann | constants.SS_MASTER_NETMASK, |
55 | fb486969 | Michael Hanselmann | constants.SS_MASTER_NODE, |
56 | fb486969 | Michael Hanselmann | constants.SS_NODE_LIST, |
57 | fb486969 | Michael Hanselmann | constants.SS_NODE_PRIMARY_IPS, |
58 | fb486969 | Michael Hanselmann | constants.SS_NODE_SECONDARY_IPS, |
59 | fb486969 | Michael Hanselmann | constants.SS_OFFLINE_NODES, |
60 | fb486969 | Michael Hanselmann | constants.SS_ONLINE_NODES, |
61 | fb486969 | Michael Hanselmann | constants.SS_PRIMARY_IP_FAMILY, |
62 | fb486969 | Michael Hanselmann | constants.SS_INSTANCE_LIST, |
63 | fb486969 | Michael Hanselmann | constants.SS_RELEASE_VERSION, |
64 | fb486969 | Michael Hanselmann | constants.SS_HYPERVISOR_LIST, |
65 | fb486969 | Michael Hanselmann | constants.SS_MAINTAIN_NODE_HEALTH, |
66 | fb486969 | Michael Hanselmann | constants.SS_UID_POOL, |
67 | fb486969 | Michael Hanselmann | constants.SS_NODEGROUPS, |
68 | fb486969 | Michael Hanselmann | constants.SS_NETWORKS, |
69 | def6577f | Helga Velroyen | constants.SS_HVPARAMS_XEN_PVM, |
70 | def6577f | Helga Velroyen | constants.SS_HVPARAMS_XEN_FAKE, |
71 | def6577f | Helga Velroyen | constants.SS_HVPARAMS_XEN_HVM, |
72 | def6577f | Helga Velroyen | constants.SS_HVPARAMS_XEN_KVM, |
73 | def6577f | Helga Velroyen | constants.SS_HVPARAMS_XEN_CHROOT, |
74 | def6577f | Helga Velroyen | constants.SS_HVPARAMS_XEN_LXC, |
75 | fb486969 | Michael Hanselmann | ]) |
76 | fb486969 | Michael Hanselmann | |
77 | fb486969 | Michael Hanselmann | #: Maximum size for ssconf files
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78 | fb486969 | Michael Hanselmann | _MAX_SIZE = 128 * 1024 |
79 | fb486969 | Michael Hanselmann | |
80 | 0c223ea9 | Michael Hanselmann | |
81 | 911dfc49 | Michael Hanselmann | def ReadSsconfFile(filename): |
82 | 911dfc49 | Michael Hanselmann | """Reads an ssconf file and verifies its size.
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83 | 911dfc49 | Michael Hanselmann |
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84 | 911dfc49 | Michael Hanselmann | @type filename: string
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85 | 911dfc49 | Michael Hanselmann | @param filename: Path to file
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86 | 911dfc49 | Michael Hanselmann | @rtype: string
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87 | 911dfc49 | Michael Hanselmann | @return: File contents without newlines at the end
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88 | 911dfc49 | Michael Hanselmann | @raise RuntimeError: When the file size exceeds L{_MAX_SIZE}
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89 | 911dfc49 | Michael Hanselmann |
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90 | 911dfc49 | Michael Hanselmann | """
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91 | 911dfc49 | Michael Hanselmann | statcb = utils.FileStatHelper() |
92 | 911dfc49 | Michael Hanselmann | |
93 | 911dfc49 | Michael Hanselmann | data = utils.ReadFile(filename, size=_MAX_SIZE, preread=statcb) |
94 | 911dfc49 | Michael Hanselmann | |
95 | 911dfc49 | Michael Hanselmann | if statcb.st.st_size > _MAX_SIZE:
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96 | 911dfc49 | Michael Hanselmann | msg = ("File '%s' has a size of %s bytes (up to %s allowed)" %
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97 | 911dfc49 | Michael Hanselmann | (filename, statcb.st.st_size, _MAX_SIZE)) |
98 | 911dfc49 | Michael Hanselmann | raise RuntimeError(msg) |
99 | 911dfc49 | Michael Hanselmann | |
100 | 911dfc49 | Michael Hanselmann | return data.rstrip("\n") |
101 | 911dfc49 | Michael Hanselmann | |
102 | 911dfc49 | Michael Hanselmann | |
103 | 93384844 | Iustin Pop | class SimpleStore(object): |
104 | 93384844 | Iustin Pop | """Interface to static cluster data.
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105 | 93384844 | Iustin Pop |
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106 | 93384844 | Iustin Pop | This is different that the config.ConfigWriter and
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107 | 93384844 | Iustin Pop | SimpleConfigReader classes in that it holds data that will always be
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108 | 93384844 | Iustin Pop | present, even on nodes which don't have all the cluster data.
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109 | 93384844 | Iustin Pop |
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110 | 93384844 | Iustin Pop | Other particularities of the datastore:
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111 | 93384844 | Iustin Pop | - keys are restricted to predefined values
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112 | 93384844 | Iustin Pop |
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113 | 93384844 | Iustin Pop | """
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114 | cc7f5bfc | Michael Hanselmann | def __init__(self, cfg_location=None, _lockfile=pathutils.SSCONF_LOCK_FILE): |
115 | 93384844 | Iustin Pop | if cfg_location is None: |
116 | f45c5c09 | Michael Hanselmann | self._cfg_dir = pathutils.DATA_DIR
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117 | 93384844 | Iustin Pop | else:
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118 | 93384844 | Iustin Pop | self._cfg_dir = cfg_location
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119 | 93384844 | Iustin Pop | |
120 | cc7f5bfc | Michael Hanselmann | self._lockfile = _lockfile
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121 | cc7f5bfc | Michael Hanselmann | |
122 | 93384844 | Iustin Pop | def KeyToFilename(self, key): |
123 | 93384844 | Iustin Pop | """Convert a given key into filename.
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124 | 93384844 | Iustin Pop |
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125 | 93384844 | Iustin Pop | """
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126 | fb486969 | Michael Hanselmann | if key not in _VALID_KEYS: |
127 | 93384844 | Iustin Pop | raise errors.ProgrammerError("Invalid key requested from SSConf: '%s'" |
128 | 93384844 | Iustin Pop | % str(key))
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129 | 93384844 | Iustin Pop | |
130 | c09254c2 | Iustin Pop | filename = self._cfg_dir + "/" + constants.SSCONF_FILEPREFIX + key |
131 | 93384844 | Iustin Pop | return filename
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132 | 93384844 | Iustin Pop | |
133 | 7dd999fc | Manuel Franceschini | def _ReadFile(self, key, default=None): |
134 | 93384844 | Iustin Pop | """Generic routine to read keys.
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135 | 93384844 | Iustin Pop |
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136 | 93384844 | Iustin Pop | This will read the file which holds the value requested. Errors
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137 | 93384844 | Iustin Pop | will be changed into ConfigurationErrors.
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138 | 93384844 | Iustin Pop |
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139 | 93384844 | Iustin Pop | """
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140 | 93384844 | Iustin Pop | filename = self.KeyToFilename(key)
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141 | 93384844 | Iustin Pop | try:
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142 | 911dfc49 | Michael Hanselmann | return ReadSsconfFile(filename)
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143 | 93384844 | Iustin Pop | except EnvironmentError, err: |
144 | 7dd999fc | Manuel Franceschini | if err.errno == errno.ENOENT and default is not None: |
145 | 7dd999fc | Manuel Franceschini | return default
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146 | c5ac51bb | Michael Hanselmann | raise errors.ConfigurationError("Can't read ssconf file %s: %s" % |
147 | c5ac51bb | Michael Hanselmann | (filename, str(err)))
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148 | c5ac51bb | Michael Hanselmann | |
149 | 9b4329e9 | Michael Hanselmann | def ReadAll(self): |
150 | 9b4329e9 | Michael Hanselmann | """Reads all keys and returns their values.
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151 | 9b4329e9 | Michael Hanselmann |
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152 | 9b4329e9 | Michael Hanselmann | @rtype: dict
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153 | 9b4329e9 | Michael Hanselmann | @return: Dictionary, ssconf key as key, value as value
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154 | 9b4329e9 | Michael Hanselmann |
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155 | 9b4329e9 | Michael Hanselmann | """
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156 | 9b4329e9 | Michael Hanselmann | result = [] |
157 | 9b4329e9 | Michael Hanselmann | |
158 | 9b4329e9 | Michael Hanselmann | for key in _VALID_KEYS: |
159 | 9b4329e9 | Michael Hanselmann | try:
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160 | 9b4329e9 | Michael Hanselmann | value = self._ReadFile(key)
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161 | 9b4329e9 | Michael Hanselmann | except errors.ConfigurationError:
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162 | 9b4329e9 | Michael Hanselmann | # Ignore non-existing files
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163 | 9b4329e9 | Michael Hanselmann | pass
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164 | 9b4329e9 | Michael Hanselmann | else:
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165 | 9b4329e9 | Michael Hanselmann | result.append((key, value)) |
166 | 9b4329e9 | Michael Hanselmann | |
167 | 9b4329e9 | Michael Hanselmann | return dict(result) |
168 | 9b4329e9 | Michael Hanselmann | |
169 | cc7f5bfc | Michael Hanselmann | def WriteFiles(self, values, dry_run=False): |
170 | 89b14f05 | Iustin Pop | """Writes ssconf files used by external scripts.
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171 | 89b14f05 | Iustin Pop |
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172 | 89b14f05 | Iustin Pop | @type values: dict
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173 | 89b14f05 | Iustin Pop | @param values: Dictionary of (name, value)
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174 | cc7f5bfc | Michael Hanselmann | @type dry_run boolean
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175 | cc7f5bfc | Michael Hanselmann | @param dry_run: Whether to perform a dry run
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176 | 89b14f05 | Iustin Pop |
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177 | 89b14f05 | Iustin Pop | """
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178 | cc7f5bfc | Michael Hanselmann | ssconf_lock = utils.FileLock.Open(self._lockfile)
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179 | 89b14f05 | Iustin Pop | |
180 | 89b14f05 | Iustin Pop | # Get lock while writing files
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181 | 89b14f05 | Iustin Pop | ssconf_lock.Exclusive(blocking=True, timeout=SSCONF_LOCK_TIMEOUT)
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182 | 89b14f05 | Iustin Pop | try:
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183 | 89b14f05 | Iustin Pop | for name, value in values.iteritems(): |
184 | 02b31f32 | Iustin Pop | if value and not value.endswith("\n"): |
185 | 89b14f05 | Iustin Pop | value += "\n"
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186 | cc7f5bfc | Michael Hanselmann | |
187 | fb486969 | Michael Hanselmann | if len(value) > _MAX_SIZE: |
188 | cc7f5bfc | Michael Hanselmann | msg = ("Value '%s' has a length of %s bytes, but only up to %s are"
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189 | cc7f5bfc | Michael Hanselmann | " allowed" % (name, len(value), _MAX_SIZE)) |
190 | cc7f5bfc | Michael Hanselmann | raise errors.ConfigurationError(msg)
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191 | cc7f5bfc | Michael Hanselmann | |
192 | cd57bab6 | Michael Hanselmann | utils.WriteFile(self.KeyToFilename(name), data=value,
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193 | cc7f5bfc | Michael Hanselmann | mode=constants.SS_FILE_PERMS, |
194 | cc7f5bfc | Michael Hanselmann | dry_run=dry_run) |
195 | 89b14f05 | Iustin Pop | finally:
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196 | 89b14f05 | Iustin Pop | ssconf_lock.Unlock() |
197 | 89b14f05 | Iustin Pop | |
198 | 93384844 | Iustin Pop | def GetFileList(self): |
199 | 93384844 | Iustin Pop | """Return the list of all config files.
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200 | 93384844 | Iustin Pop |
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201 | 93384844 | Iustin Pop | This is used for computing node replication data.
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202 | 93384844 | Iustin Pop |
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203 | 93384844 | Iustin Pop | """
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204 | fb486969 | Michael Hanselmann | return [self.KeyToFilename(key) for key in _VALID_KEYS] |
205 | 93384844 | Iustin Pop | |
206 | 93384844 | Iustin Pop | def GetClusterName(self): |
207 | 93384844 | Iustin Pop | """Get the cluster name.
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208 | 93384844 | Iustin Pop |
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209 | 93384844 | Iustin Pop | """
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210 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_CLUSTER_NAME) |
211 | 93384844 | Iustin Pop | |
212 | 93384844 | Iustin Pop | def GetFileStorageDir(self): |
213 | 93384844 | Iustin Pop | """Get the file storage dir.
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214 | 93384844 | Iustin Pop |
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215 | 93384844 | Iustin Pop | """
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216 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_FILE_STORAGE_DIR) |
217 | 93384844 | Iustin Pop | |
218 | 4b97f902 | Apollon Oikonomopoulos | def GetSharedFileStorageDir(self): |
219 | 4b97f902 | Apollon Oikonomopoulos | """Get the shared file storage dir.
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220 | 4b97f902 | Apollon Oikonomopoulos |
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221 | 4b97f902 | Apollon Oikonomopoulos | """
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222 | 4b97f902 | Apollon Oikonomopoulos | return self._ReadFile(constants.SS_SHARED_FILE_STORAGE_DIR) |
223 | 4b97f902 | Apollon Oikonomopoulos | |
224 | d3e6fd0e | Santi Raffa | def GetGlusterStorageDir(self): |
225 | d3e6fd0e | Santi Raffa | """Get the Gluster storage dir.
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226 | d3e6fd0e | Santi Raffa |
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227 | d3e6fd0e | Santi Raffa | """
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228 | d3e6fd0e | Santi Raffa | return self._ReadFile(constants.SS_GLUSTER_STORAGE_DIR) |
229 | d3e6fd0e | Santi Raffa | |
230 | f56618e0 | Iustin Pop | def GetMasterCandidates(self): |
231 | f56618e0 | Iustin Pop | """Return the list of master candidates.
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232 | f56618e0 | Iustin Pop |
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233 | f56618e0 | Iustin Pop | """
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234 | f56618e0 | Iustin Pop | data = self._ReadFile(constants.SS_MASTER_CANDIDATES)
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235 | f56618e0 | Iustin Pop | nl = data.splitlines(False)
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236 | f56618e0 | Iustin Pop | return nl
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237 | f56618e0 | Iustin Pop | |
238 | 8113a52e | Luca Bigliardi | def GetMasterCandidatesIPList(self): |
239 | 8113a52e | Luca Bigliardi | """Return the list of master candidates' primary IP.
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240 | 8113a52e | Luca Bigliardi |
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241 | 8113a52e | Luca Bigliardi | """
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242 | 8113a52e | Luca Bigliardi | data = self._ReadFile(constants.SS_MASTER_CANDIDATES_IPS)
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243 | 8113a52e | Luca Bigliardi | nl = data.splitlines(False)
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244 | 8113a52e | Luca Bigliardi | return nl
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245 | 8113a52e | Luca Bigliardi | |
246 | 93384844 | Iustin Pop | def GetMasterIP(self): |
247 | 93384844 | Iustin Pop | """Get the IP of the master node for this cluster.
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248 | 93384844 | Iustin Pop |
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249 | 93384844 | Iustin Pop | """
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250 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_IP) |
251 | 93384844 | Iustin Pop | |
252 | 93384844 | Iustin Pop | def GetMasterNetdev(self): |
253 | 93384844 | Iustin Pop | """Get the netdev to which we'll add the master ip.
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254 | 93384844 | Iustin Pop |
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255 | 93384844 | Iustin Pop | """
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256 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NETDEV) |
257 | 93384844 | Iustin Pop | |
258 | 5a8648eb | Andrea Spadaccini | def GetMasterNetmask(self): |
259 | 186c03b3 | Andrea Spadaccini | """Get the master netmask.
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260 | 5a8648eb | Andrea Spadaccini |
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261 | 5a8648eb | Andrea Spadaccini | """
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262 | 186c03b3 | Andrea Spadaccini | try:
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263 | 186c03b3 | Andrea Spadaccini | return self._ReadFile(constants.SS_MASTER_NETMASK) |
264 | 186c03b3 | Andrea Spadaccini | except errors.ConfigurationError:
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265 | 186c03b3 | Andrea Spadaccini | family = self.GetPrimaryIPFamily()
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266 | 186c03b3 | Andrea Spadaccini | ipcls = netutils.IPAddress.GetClassFromIpFamily(family) |
267 | 186c03b3 | Andrea Spadaccini | return ipcls.iplen
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268 | 5a8648eb | Andrea Spadaccini | |
269 | 93384844 | Iustin Pop | def GetMasterNode(self): |
270 | 93384844 | Iustin Pop | """Get the hostname of the master node for this cluster.
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271 | 93384844 | Iustin Pop |
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272 | 93384844 | Iustin Pop | """
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273 | 93384844 | Iustin Pop | return self._ReadFile(constants.SS_MASTER_NODE) |
274 | 93384844 | Iustin Pop | |
275 | 93384844 | Iustin Pop | def GetNodeList(self): |
276 | 93384844 | Iustin Pop | """Return the list of cluster nodes.
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277 | 93384844 | Iustin Pop |
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278 | 93384844 | Iustin Pop | """
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279 | 93384844 | Iustin Pop | data = self._ReadFile(constants.SS_NODE_LIST)
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280 | 93384844 | Iustin Pop | nl = data.splitlines(False)
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281 | 93384844 | Iustin Pop | return nl
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282 | 93384844 | Iustin Pop | |
283 | 790fc19d | Klaus Aehlig | def GetOnlineNodeList(self): |
284 | 790fc19d | Klaus Aehlig | """Return the list of online cluster nodes.
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285 | 790fc19d | Klaus Aehlig |
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286 | 790fc19d | Klaus Aehlig | """
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287 | 790fc19d | Klaus Aehlig | data = self._ReadFile(constants.SS_ONLINE_NODES)
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288 | 790fc19d | Klaus Aehlig | nl = data.splitlines(False)
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289 | 790fc19d | Klaus Aehlig | return nl
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290 | 790fc19d | Klaus Aehlig | |
291 | f9780ccd | Luca Bigliardi | def GetNodePrimaryIPList(self): |
292 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' primary IP.
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293 | f9780ccd | Luca Bigliardi |
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294 | f9780ccd | Luca Bigliardi | """
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295 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_PRIMARY_IPS)
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296 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
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297 | f9780ccd | Luca Bigliardi | return nl
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298 | f9780ccd | Luca Bigliardi | |
299 | f9780ccd | Luca Bigliardi | def GetNodeSecondaryIPList(self): |
300 | f9780ccd | Luca Bigliardi | """Return the list of cluster nodes' secondary IP.
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301 | f9780ccd | Luca Bigliardi |
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302 | f9780ccd | Luca Bigliardi | """
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303 | f9780ccd | Luca Bigliardi | data = self._ReadFile(constants.SS_NODE_SECONDARY_IPS)
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304 | f9780ccd | Luca Bigliardi | nl = data.splitlines(False)
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305 | f9780ccd | Luca Bigliardi | return nl
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306 | f9780ccd | Luca Bigliardi | |
307 | 6f076453 | Guido Trotter | def GetNodegroupList(self): |
308 | 6f076453 | Guido Trotter | """Return the list of nodegroups.
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309 | 6f076453 | Guido Trotter |
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310 | 6f076453 | Guido Trotter | """
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311 | 6f076453 | Guido Trotter | data = self._ReadFile(constants.SS_NODEGROUPS)
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312 | 6f076453 | Guido Trotter | nl = data.splitlines(False)
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313 | 6f076453 | Guido Trotter | return nl
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314 | 6f076453 | Guido Trotter | |
315 | f2bd89b3 | Apollon Oikonomopoulos | def GetNetworkList(self): |
316 | f2bd89b3 | Apollon Oikonomopoulos | """Return the list of networks.
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317 | f2bd89b3 | Apollon Oikonomopoulos |
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318 | f2bd89b3 | Apollon Oikonomopoulos | """
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319 | f2bd89b3 | Apollon Oikonomopoulos | data = self._ReadFile(constants.SS_NETWORKS)
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320 | f2bd89b3 | Apollon Oikonomopoulos | nl = data.splitlines(False)
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321 | f2bd89b3 | Apollon Oikonomopoulos | return nl
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322 | f2bd89b3 | Apollon Oikonomopoulos | |
323 | 25e39bfa | Iustin Pop | def GetClusterTags(self): |
324 | 25e39bfa | Iustin Pop | """Return the cluster tags.
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325 | 25e39bfa | Iustin Pop |
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326 | 25e39bfa | Iustin Pop | """
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327 | 25e39bfa | Iustin Pop | data = self._ReadFile(constants.SS_CLUSTER_TAGS)
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328 | 25e39bfa | Iustin Pop | nl = data.splitlines(False)
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329 | 25e39bfa | Iustin Pop | return nl
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330 | 25e39bfa | Iustin Pop | |
331 | 4f7a6a10 | Iustin Pop | def GetHypervisorList(self): |
332 | 4f7a6a10 | Iustin Pop | """Return the list of enabled hypervisors.
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333 | 4f7a6a10 | Iustin Pop |
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334 | 4f7a6a10 | Iustin Pop | """
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335 | 4f7a6a10 | Iustin Pop | data = self._ReadFile(constants.SS_HYPERVISOR_LIST)
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336 | 4f7a6a10 | Iustin Pop | nl = data.splitlines(False)
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337 | 4f7a6a10 | Iustin Pop | return nl
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338 | 4f7a6a10 | Iustin Pop | |
339 | def6577f | Helga Velroyen | def GetHvparamsForHypervisor(self, hvname): |
340 | def6577f | Helga Velroyen | """Return the hypervisor parameters of the given hypervisor.
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341 | def6577f | Helga Velroyen |
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342 | def6577f | Helga Velroyen | @type hvname: string
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343 | def6577f | Helga Velroyen | @param hvname: name of the hypervisor, must be in C{constants.HYPER_TYPES}
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344 | def6577f | Helga Velroyen | @rtype: dict of strings
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345 | def6577f | Helga Velroyen | @returns: dictionary with hypervisor parameters
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346 | def6577f | Helga Velroyen |
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347 | def6577f | Helga Velroyen | """
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348 | def6577f | Helga Velroyen | data = self._ReadFile(constants.SS_HVPARAMS_PREF + hvname)
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349 | def6577f | Helga Velroyen | lines = data.splitlines(False)
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350 | def6577f | Helga Velroyen | hvparams = {} |
351 | def6577f | Helga Velroyen | for line in lines: |
352 | def6577f | Helga Velroyen | (key, value) = line.split("=")
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353 | def6577f | Helga Velroyen | hvparams[key] = value |
354 | def6577f | Helga Velroyen | return hvparams
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355 | def6577f | Helga Velroyen | |
356 | def6577f | Helga Velroyen | def GetHvparams(self): |
357 | def6577f | Helga Velroyen | """Return the hypervisor parameters of all hypervisors.
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358 | def6577f | Helga Velroyen |
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359 | def6577f | Helga Velroyen | @rtype: dict of dict of strings
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360 | def6577f | Helga Velroyen | @returns: dictionary mapping hypervisor names to hvparams
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361 | def6577f | Helga Velroyen |
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362 | def6577f | Helga Velroyen | """
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363 | def6577f | Helga Velroyen | all_hvparams = {} |
364 | def6577f | Helga Velroyen | for hv in constants.HYPER_TYPES: |
365 | def6577f | Helga Velroyen | all_hvparams[hv] = self.GetHvparamsForHypervisor(hv)
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366 | def6577f | Helga Velroyen | return all_hvparams
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367 | def6577f | Helga Velroyen | |
368 | 5c465a95 | Iustin Pop | def GetMaintainNodeHealth(self): |
369 | 5c465a95 | Iustin Pop | """Return the value of the maintain_node_health option.
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370 | 5c465a95 | Iustin Pop |
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371 | 5c465a95 | Iustin Pop | """
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372 | 5c465a95 | Iustin Pop | data = self._ReadFile(constants.SS_MAINTAIN_NODE_HEALTH)
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373 | 5c465a95 | Iustin Pop | # we rely on the bool serialization here
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374 | 5c465a95 | Iustin Pop | return data == "True" |
375 | 5c465a95 | Iustin Pop | |
376 | 0fbae49a | Balazs Lecz | def GetUidPool(self): |
377 | 0fbae49a | Balazs Lecz | """Return the user-id pool definition string.
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378 | 0fbae49a | Balazs Lecz |
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379 | 0fbae49a | Balazs Lecz | The separator character is a newline.
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380 | 0fbae49a | Balazs Lecz |
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381 | d3b790bb | Balazs Lecz | The return value can be parsed using uidpool.ParseUidPool()::
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382 | d3b790bb | Balazs Lecz |
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383 | 0fbae49a | Balazs Lecz | ss = ssconf.SimpleStore()
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384 | d3b790bb | Balazs Lecz | uid_pool = uidpool.ParseUidPool(ss.GetUidPool(), separator="\\n")
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385 | 0fbae49a | Balazs Lecz |
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386 | 0fbae49a | Balazs Lecz | """
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387 | 0fbae49a | Balazs Lecz | data = self._ReadFile(constants.SS_UID_POOL)
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388 | 0fbae49a | Balazs Lecz | return data
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389 | 0fbae49a | Balazs Lecz | |
390 | 868a98ca | Manuel Franceschini | def GetPrimaryIPFamily(self): |
391 | 868a98ca | Manuel Franceschini | """Return the cluster-wide primary address family.
|
392 | 868a98ca | Manuel Franceschini |
|
393 | 868a98ca | Manuel Franceschini | """
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394 | 868a98ca | Manuel Franceschini | try:
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395 | 7dd999fc | Manuel Franceschini | return int(self._ReadFile(constants.SS_PRIMARY_IP_FAMILY, |
396 | 7dd999fc | Manuel Franceschini | default=netutils.IP4Address.family)) |
397 | 868a98ca | Manuel Franceschini | except (ValueError, TypeError), err: |
398 | c5ac51bb | Michael Hanselmann | raise errors.ConfigurationError("Error while trying to parse primary IP" |
399 | 868a98ca | Manuel Franceschini | " family: %s" % err)
|
400 | 868a98ca | Manuel Franceschini | |
401 | 93384844 | Iustin Pop | |
402 | cc7f5bfc | Michael Hanselmann | def WriteSsconfFiles(values, dry_run=False): |
403 | ee501db1 | Michael Hanselmann | """Update all ssconf files.
|
404 | ee501db1 | Michael Hanselmann |
|
405 | ee501db1 | Michael Hanselmann | Wrapper around L{SimpleStore.WriteFiles}.
|
406 | ee501db1 | Michael Hanselmann |
|
407 | ee501db1 | Michael Hanselmann | """
|
408 | cc7f5bfc | Michael Hanselmann | SimpleStore().WriteFiles(values, dry_run=dry_run) |
409 | ee501db1 | Michael Hanselmann | |
410 | ee501db1 | Michael Hanselmann | |
411 | b33e986b | Iustin Pop | def GetMasterAndMyself(ss=None): |
412 | b33e986b | Iustin Pop | """Get the master node and my own hostname.
|
413 | b33e986b | Iustin Pop |
|
414 | b33e986b | Iustin Pop | This can be either used for a 'soft' check (compared to CheckMaster,
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415 | b33e986b | Iustin Pop | which exits) or just for computing both at the same time.
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416 | b33e986b | Iustin Pop |
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417 | b33e986b | Iustin Pop | The function does not handle any errors, these should be handled in
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418 | b33e986b | Iustin Pop | the caller (errors.ConfigurationError, errors.ResolverError).
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419 | b33e986b | Iustin Pop |
|
420 | 8135a2db | Iustin Pop | @param ss: either a sstore.SimpleConfigReader or a
|
421 | 8135a2db | Iustin Pop | sstore.SimpleStore instance
|
422 | 8135a2db | Iustin Pop | @rtype: tuple
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423 | 8135a2db | Iustin Pop | @return: a tuple (master node name, my own name)
|
424 | 8135a2db | Iustin Pop |
|
425 | b33e986b | Iustin Pop | """
|
426 | b33e986b | Iustin Pop | if ss is None: |
427 | 93384844 | Iustin Pop | ss = SimpleStore() |
428 | b705c7a6 | Manuel Franceschini | return ss.GetMasterNode(), netutils.Hostname.GetSysName()
|
429 | b33e986b | Iustin Pop | |
430 | 06dc5b44 | Iustin Pop | |
431 | b33e986b | Iustin Pop | def CheckMaster(debug, ss=None): |
432 | 5675cd1f | Iustin Pop | """Checks the node setup.
|
433 | 5675cd1f | Iustin Pop |
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434 | 5675cd1f | Iustin Pop | If this is the master, the function will return. Otherwise it will
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435 | 5675cd1f | Iustin Pop | exit with an exit code based on the node status.
|
436 | 5675cd1f | Iustin Pop |
|
437 | 5675cd1f | Iustin Pop | """
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438 | 5675cd1f | Iustin Pop | try:
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439 | b33e986b | Iustin Pop | master_name, myself = GetMasterAndMyself(ss) |
440 | 5675cd1f | Iustin Pop | except errors.ConfigurationError, err:
|
441 | 5675cd1f | Iustin Pop | print "Cluster configuration incomplete: '%s'" % str(err) |
442 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
443 | 5675cd1f | Iustin Pop | except errors.ResolverError, err:
|
444 | 5675cd1f | Iustin Pop | sys.stderr.write("Cannot resolve my own name (%s)\n" % err.args[0]) |
445 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NODESETUP_ERROR) |
446 | 5675cd1f | Iustin Pop | |
447 | b33e986b | Iustin Pop | if myself != master_name:
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448 | 5675cd1f | Iustin Pop | if debug:
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449 | 5675cd1f | Iustin Pop | sys.stderr.write("Not master, exiting.\n")
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450 | 5675cd1f | Iustin Pop | sys.exit(constants.EXIT_NOTMASTER) |
451 | dffa96d6 | Michael Hanselmann | |
452 | dffa96d6 | Michael Hanselmann | |
453 | dffa96d6 | Michael Hanselmann | def VerifyClusterName(name, _cfg_location=None): |
454 | dffa96d6 | Michael Hanselmann | """Verifies cluster name against a local cluster name.
|
455 | dffa96d6 | Michael Hanselmann |
|
456 | dffa96d6 | Michael Hanselmann | @type name: string
|
457 | dffa96d6 | Michael Hanselmann | @param name: Cluster name
|
458 | dffa96d6 | Michael Hanselmann |
|
459 | dffa96d6 | Michael Hanselmann | """
|
460 | dffa96d6 | Michael Hanselmann | sstore = SimpleStore(cfg_location=_cfg_location) |
461 | dffa96d6 | Michael Hanselmann | |
462 | dffa96d6 | Michael Hanselmann | try:
|
463 | dffa96d6 | Michael Hanselmann | local_name = sstore.GetClusterName() |
464 | dffa96d6 | Michael Hanselmann | except errors.ConfigurationError, err:
|
465 | dffa96d6 | Michael Hanselmann | logging.debug("Can't get local cluster name: %s", err)
|
466 | dffa96d6 | Michael Hanselmann | else:
|
467 | dffa96d6 | Michael Hanselmann | if name != local_name:
|
468 | dffa96d6 | Michael Hanselmann | raise errors.GenericError("Current cluster name is '%s'" % local_name) |
469 | 29a32ce5 | Michael Hanselmann | |
470 | 29a32ce5 | Michael Hanselmann | |
471 | 29a32ce5 | Michael Hanselmann | def VerifyKeys(keys): |
472 | 29a32ce5 | Michael Hanselmann | """Raises an exception if unknown ssconf keys are given.
|
473 | 29a32ce5 | Michael Hanselmann |
|
474 | 29a32ce5 | Michael Hanselmann | @type keys: sequence
|
475 | 29a32ce5 | Michael Hanselmann | @param keys: Key names to verify
|
476 | 29a32ce5 | Michael Hanselmann | @raise errors.GenericError: When invalid keys were found
|
477 | 29a32ce5 | Michael Hanselmann |
|
478 | 29a32ce5 | Michael Hanselmann | """
|
479 | 29a32ce5 | Michael Hanselmann | invalid = frozenset(keys) - _VALID_KEYS
|
480 | 29a32ce5 | Michael Hanselmann | if invalid:
|
481 | 29a32ce5 | Michael Hanselmann | raise errors.GenericError("Invalid ssconf keys: %s" % |
482 | 29a32ce5 | Michael Hanselmann | utils.CommaJoin(sorted(invalid))) |