4 # Copyright (C) 2007, 2008 Google Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 """Tool to upgrade the configuration file.
24 This code handles only the types supported by simplejson. As an example, "set"
38 from ganeti import utils
39 from ganeti import cli
46 class Error(Exception):
47 """Generic exception"""
52 """Reads configuration file.
57 return simplejson.load(f)
62 def WriteConfig(path, data):
63 """Writes the configuration file.
66 if not options.dry_run:
67 utils.CreateBackup(path)
69 (fd, name) = tempfile.mkstemp(dir=os.path.dirname(path))
70 f = os.fdopen(fd, 'w')
73 simplejson.dump(data, f)
86 def UpdateFromVersion2To3(cfg):
87 """Updates the configuration from version 2 to 3.
90 if cfg['cluster']['config_version'] != 2:
94 if 'tcpudp_port_pool' not in cfg['cluster']:
95 cfg['cluster']['tcpudp_port_pool'] = []
98 if 'default_bridge' not in cfg['cluster']:
99 cfg['cluster']['default_bridge'] = 'xen-br0'
100 for inst in cfg['instances'].values():
101 for nic in inst['nics']:
102 if 'bridge' not in nic:
105 cfg['cluster']['config_version'] = 3
109 """Configures the logging module.
112 formatter = logging.Formatter("%(asctime)s: %(message)s")
114 stderr_handler = logging.StreamHandler()
115 stderr_handler.setFormatter(formatter)
117 stderr_handler.setLevel(logging.NOTSET)
118 elif options.verbose:
119 stderr_handler.setLevel(logging.INFO)
121 stderr_handler.setLevel(logging.CRITICAL)
123 root_logger = logging.getLogger("")
124 root_logger.setLevel(logging.NOTSET)
125 root_logger.addHandler(stderr_handler)
134 program = os.path.basename(sys.argv[0])
137 parser = optparse.OptionParser(usage="%prog [options] <config-file>")
138 parser.add_option('--dry-run', dest='dry_run',
140 help="Try to do the conversion, but don't write"
142 parser.add_option(cli.FORCE_OPT)
143 parser.add_option(cli.DEBUG_OPT)
144 parser.add_option('--verbose', dest='verbose',
146 help="Verbose output")
147 (options, args) = parser.parse_args()
155 raise Error("Configuration file not specified")
157 if not options.force:
158 usertext = ("%s MUST run on the master node. Is this the master"
160 if not cli.AskUser(usertext):
163 config = ReadConfig(cfg_file)
167 print "Before upgrade:"
168 pprint.pprint(config)
171 UpdateFromVersion2To3(config)
174 print "After upgrade:"
175 pprint.pprint(config)
178 WriteConfig(cfg_file, config)
180 print "The configuration file has been updated successfully. Please run"
181 print " gnt-cluster copyfile %s" % cfg_file
185 if __name__ == "__main__":
188 # vim: set foldmethod=marker :