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#!/usr/bin/python |
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# |
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# Copyright (C) 2007, 2008, 2009, 2010 Google Inc. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. |
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|
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|
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"""Tool to upgrade the configuration file. |
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|
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This code handles only the types supported by simplejson. As an |
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example, 'set' is a 'list'. |
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|
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""" |
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|
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|
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import os |
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import os.path |
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import sys |
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import optparse |
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import logging |
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|
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from ganeti import constants |
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from ganeti import serializer |
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from ganeti import utils |
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from ganeti import cli |
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from ganeti import bootstrap |
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from ganeti import config |
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from ganeti import netutils |
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|
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|
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options = None |
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args = None |
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|
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class Error(Exception): |
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"""Generic exception""" |
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pass |
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|
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|
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def SetupLogging(): |
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"""Configures the logging module. |
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|
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""" |
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formatter = logging.Formatter("%(asctime)s: %(message)s") |
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|
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stderr_handler = logging.StreamHandler() |
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stderr_handler.setFormatter(formatter) |
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if options.debug: |
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stderr_handler.setLevel(logging.NOTSET) |
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elif options.verbose: |
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stderr_handler.setLevel(logging.INFO) |
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else: |
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stderr_handler.setLevel(logging.WARNING) |
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|
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root_logger = logging.getLogger("") |
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root_logger.setLevel(logging.NOTSET) |
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root_logger.addHandler(stderr_handler) |
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|
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|
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def CheckHostname(path): |
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"""Ensures hostname matches ssconf value. |
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|
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@param path: Path to ssconf file |
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|
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""" |
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ssconf_master_node = utils.ReadOneLineFile(path) |
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hostname = netutils.GetHostname().name |
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|
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if ssconf_master_node == hostname: |
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return True |
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|
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logging.warning("Warning: ssconf says master node is '%s', but this" |
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" machine's name is '%s'; this tool must be run on" |
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" the master node", ssconf_master_node, hostname) |
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return False |
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|
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|
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def main(): |
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"""Main program. |
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|
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""" |
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global options, args # pylint: disable=W0603 |
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|
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# Option parsing |
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parser = optparse.OptionParser(usage="%prog [--debug|--verbose] [--force]") |
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parser.add_option('--dry-run', dest='dry_run', |
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action="store_true", |
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help="Try to do the conversion, but don't write" |
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" output file") |
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parser.add_option(cli.FORCE_OPT) |
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parser.add_option(cli.DEBUG_OPT) |
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parser.add_option(cli.VERBOSE_OPT) |
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parser.add_option("--ignore-hostname", dest="ignore_hostname", |
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action="store_true", default=False, |
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help="Don't abort if hostname doesn't match") |
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parser.add_option('--path', help="Convert configuration in this" |
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" directory instead of '%s'" % constants.DATA_DIR, |
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default=constants.DATA_DIR, dest="data_dir") |
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parser.add_option("--no-verify", |
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help="Do not verify configuration after upgrade", |
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action="store_true", dest="no_verify", default=False) |
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(options, args) = parser.parse_args() |
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|
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# We need to keep filenames locally because they might be renamed between |
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# versions. |
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options.data_dir = os.path.abspath(options.data_dir) |
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options.CONFIG_DATA_PATH = options.data_dir + "/config.data" |
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options.SERVER_PEM_PATH = options.data_dir + "/server.pem" |
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options.KNOWN_HOSTS_PATH = options.data_dir + "/known_hosts" |
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options.RAPI_CERT_FILE = options.data_dir + "/rapi.pem" |
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options.RAPI_USERS_FILE = options.data_dir + "/rapi/users" |
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options.RAPI_USERS_FILE_PRE24 = options.data_dir + "/rapi_users" |
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options.CONFD_HMAC_KEY = options.data_dir + "/hmac.key" |
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options.CDS_FILE = options.data_dir + "/cluster-domain-secret" |
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options.SSCONF_MASTER_NODE = options.data_dir + "/ssconf_master_node" |
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options.WATCHER_STATEFILE = options.data_dir + "/watcher.data" |
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|
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SetupLogging() |
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|
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# Option checking |
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if args: |
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raise Error("No arguments expected") |
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|
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# Check master name |
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if not (CheckHostname(options.SSCONF_MASTER_NODE) or options.ignore_hostname): |
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logging.error("Aborting due to hostname mismatch") |
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sys.exit(constants.EXIT_FAILURE) |
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|
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if not options.force: |
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usertext = ("Please make sure you have read the upgrade notes for" |
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" Ganeti %s (available in the UPGRADE file and included" |
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" in other documentation formats). Continue with upgrading" |
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" configuration?" % constants.RELEASE_VERSION) |
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if not cli.AskUser(usertext): |
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sys.exit(constants.EXIT_FAILURE) |
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|
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# Check whether it's a Ganeti configuration directory |
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if not (os.path.isfile(options.CONFIG_DATA_PATH) and |
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os.path.isfile(options.SERVER_PEM_PATH) and |
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os.path.isfile(options.KNOWN_HOSTS_PATH)): |
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raise Error(("%s does not seem to be a Ganeti configuration" |
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" directory") % options.data_dir) |
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config_data = serializer.LoadJson(utils.ReadFile(options.CONFIG_DATA_PATH)) |
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try: |
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config_version = config_data["version"] |
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except KeyError: |
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raise Error("Unable to determine configuration version") |
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(config_major, config_minor, config_revision) = \ |
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constants.SplitVersion(config_version) |
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logging.info("Found configuration version %s (%d.%d.%d)", |
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config_version, config_major, config_minor, config_revision) |
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if "config_version" in config_data["cluster"]: |
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raise Error("Inconsistent configuration: found config_version in" |
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" configuration file") |
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# Upgrade from 2.0/2.1/2.2/2.3 to 2.4 |
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if config_major == 2 and config_minor in (0, 1, 2, 3, 4): |
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if config_revision != 0: |
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logging.warning("Config revision is %s, not 0", config_revision) |
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config_data["version"] = constants.BuildVersion(2, 5, 0) |
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elif config_major == 2 and config_minor == 5: |
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logging.info("No changes necessary") |
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|
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else: |
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raise Error("Configuration version %d.%d.%d not supported by this tool" % |
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(config_major, config_minor, config_revision)) |
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|
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if (os.path.isfile(options.RAPI_USERS_FILE_PRE24) and |
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not os.path.islink(options.RAPI_USERS_FILE_PRE24)): |
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if os.path.exists(options.RAPI_USERS_FILE): |
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raise Error("Found pre-2.4 RAPI users file at %s, but another file" |
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" already exists at %s" % |
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(options.RAPI_USERS_FILE_PRE24, options.RAPI_USERS_FILE)) |
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logging.info("Found pre-2.4 RAPI users file at %s, renaming to %s", |
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options.RAPI_USERS_FILE_PRE24, options.RAPI_USERS_FILE) |
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if not options.dry_run: |
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utils.RenameFile(options.RAPI_USERS_FILE_PRE24, options.RAPI_USERS_FILE, |
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mkdir=True, mkdir_mode=0750) |
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|
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# Create a symlink for RAPI users file |
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if (not (os.path.islink(options.RAPI_USERS_FILE_PRE24) or |
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os.path.isfile(options.RAPI_USERS_FILE_PRE24)) and |
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os.path.isfile(options.RAPI_USERS_FILE)): |
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logging.info("Creating symlink from %s to %s", |
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options.RAPI_USERS_FILE_PRE24, options.RAPI_USERS_FILE) |
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if not options.dry_run: |
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os.symlink(options.RAPI_USERS_FILE, options.RAPI_USERS_FILE_PRE24) |
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# Remove old watcher state file if it exists |
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if os.path.exists(options.WATCHER_STATEFILE): |
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logging.info("Removing watcher state file %s", options.WATCHER_STATEFILE) |
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if not options.dry_run: |
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utils.RemoveFile(options.WATCHER_STATEFILE) |
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try: |
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logging.info("Writing configuration file to %s", options.CONFIG_DATA_PATH) |
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utils.WriteFile(file_name=options.CONFIG_DATA_PATH, |
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data=serializer.DumpJson(config_data), |
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mode=0600, |
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dry_run=options.dry_run, |
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backup=True) |
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if not options.dry_run: |
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bootstrap.GenerateClusterCrypto(False, False, False, False, |
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nodecert_file=options.SERVER_PEM_PATH, |
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rapicert_file=options.RAPI_CERT_FILE, |
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hmackey_file=options.CONFD_HMAC_KEY, |
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cds_file=options.CDS_FILE) |
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|
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except Exception: |
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logging.critical("Writing configuration failed. It is probably in an" |
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" inconsistent state and needs manual intervention.") |
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raise |
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|
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# test loading the config file |
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if not (options.dry_run or options.no_verify): |
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logging.info("Testing the new config file...") |
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cfg = config.ConfigWriter(cfg_file=options.CONFIG_DATA_PATH, |
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accept_foreign=options.ignore_hostname, |
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offline=True) |
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# if we reached this, it's all fine |
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vrfy = cfg.VerifyConfig() |
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if vrfy: |
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logging.error("Errors after conversion:") |
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for item in vrfy: |
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logging.error(" - %s", item) |
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del cfg |
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logging.info("File loaded successfully") |
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cli.ToStderr("Configuration successfully upgraded for version %s.", |
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constants.RELEASE_VERSION) |
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if __name__ == "__main__": |
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main() |