552 lines
24 KiB
Python
552 lines
24 KiB
Python
# (c) Copyright 2014,2015 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import print_function
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from distutils import spawn as distspawn
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import os
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from oslo_config import cfg
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from oslo_log import log
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from oslo_utils import encodeutils
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import socket
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import sys
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from tempfile import NamedTemporaryFile
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from freezer import __version__ as FREEZER_VERSION
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from freezer.utils import config as freezer_config
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from freezer.utils import utils
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from freezer.utils import winutils
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CONF = cfg.CONF
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LOG = log.getLogger(__name__)
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home = os.path.expanduser("~")
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DEFAULT_LVM_SNAPSIZE = '1G'
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DEFAULT_LVM_MOUNT_BASENAME = '/var/lib/freezer'
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DEFAULT_LVM_SNAP_BASENAME = 'freezer_backup_snap'
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DEFAULT_SSH_PORT = 22
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DEFAULT_PARAMS = {
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'os_identity_api_version': None,
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'lvm_auto_snap': False, 'lvm_volgroup': False,
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'exclude': False, 'sql_server_conf': False,
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'backup_name': False, 'quiet': False,
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'container': 'freezer_backups', 'no_incremental': False,
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'max_segment_size': 33554432, 'lvm_srcvol': False,
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'download_limit': -1, 'hostname': False, 'remove_from_date': False,
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'restart_always_level': False, 'lvm_dirmount': None,
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'dereference_symlink': '',
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'config': False, 'mysql_conf': False,
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'insecure': False, 'lvm_snapname': None,
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'lvm_snapperm': 'ro', 'snapshot': False,
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'max_priority': False, 'max_level': False, 'path_to_backup': False,
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'encrypt_pass_file': False, 'volume': False, 'proxy': False,
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'cinder_vol_id': '', 'cindernative_vol_id': '',
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'nova_inst_id': '', '__version__': FREEZER_VERSION,
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'remove_older_than': None, 'restore_from_date': False,
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'upload_limit': -1, 'always_level': False, 'version': False,
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'dry_run': False, 'lvm_snapsize': DEFAULT_LVM_SNAPSIZE,
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'restore_abs_path': False, 'log_file': None, 'log_level': "info",
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'mode': 'fs', 'action': 'backup', 'shadow': '', 'shadow_path': '',
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'windows_volume': '', 'command': None, 'metadata_out': False,
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'storage': 'swift', 'ssh_key': '', 'ssh_username': '', 'ssh_host': '',
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'ssh_port': DEFAULT_SSH_PORT, 'compression': 'gzip',
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'overwrite': False,
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}
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_COMMON = [
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cfg.StrOpt('action',
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choices=['backup', 'restore', 'info', 'admin', 'exec'],
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dest='action',
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help="Set the action to be taken. backup and restore are self "
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"explanatory, info is used to retrieve info from the "
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"storage media, exec is used to execute a script, while "
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"admin is used to delete old backups and other admin "
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"actions. Default backup."
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),
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cfg.StrOpt('path-to-backup',
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short='F',
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default=False,
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help='The file or directory you want to back up to Swift'
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),
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cfg.StrOpt('backup-name',
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short='N',
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default=False,
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help="The backup name you want to use to identify your backup "
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"on Swift"
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),
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cfg.StrOpt('mode',
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short='m',
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dest='mode',
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help="Set the technology to back from. Options are, fs "
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"(filesystem),mongo (MongoDB), mysql (MySQL), sqlserver "
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"(SQL Server) Default set to fs"),
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cfg.StrOpt('container',
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short='C',
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default='freezer_backups',
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dest='container',
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help="The Swift container (or path to local storage) used to "
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"upload files to"),
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cfg.StrOpt('snapshot',
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short='s',
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dest='snapshot',
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help="Create a snapshot of the fs containing the resource to "
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"backup. When used, the lvm parameters will be guessed "
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"and/or the default values will be used, on windows it "
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"will invoke vssadmin"),
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cfg.StrOpt('lvm-auto-snap',
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dest='lvm_auto_snap',
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help="Automatically guess the volume group and volume name for "
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"given PATH."),
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cfg.StrOpt('lvm-srcvol',
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dest='lvm_srcvol',
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help="Set the lvm volume you want to take a snaphost from. "
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"Default no volume"),
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cfg.StrOpt('lvm-snapname',
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dest='lvm_snapname',
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help="Set the name of the snapshot that will be created."
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" If not provided, a unique name will be generated."),
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cfg.StrOpt('lvm-snap-perm',
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choices=['ro', 'rw'],
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dest='lvm_snapperm',
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help="Set the lvm snapshot permission to use. If the permission"
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" is set to ro The snapshot will be immutable - read only"
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" -. If the permission is set to rw it will be mutable"),
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cfg.StrOpt('lvm-snapsize',
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dest='lvm_snapsize',
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help="Set the lvm snapshot size when creating a new snapshot. "
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"Please add G for Gigabytes or M for Megabytes, i.e. 500M "
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"or 8G. Default {0}.".format(DEFAULT_LVM_SNAPSIZE)),
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cfg.StrOpt('lvm-dirmount',
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dest='lvm_dirmount',
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help="Set the directory you want to mount the lvm snapshot to. "
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"If not provided, a unique name will be generated with the"
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"basename {0} ".format(DEFAULT_LVM_MOUNT_BASENAME)),
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cfg.StrOpt('lvm-volgroup',
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dest='lvm_volgroup',
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help="Specify the volume group of your logical volume. This is "
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"important to mount your snapshot volume. Default not set"),
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cfg.IntOpt('max-level',
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dest='max_level',
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help="Set the backup level used with tar to implement "
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"incremental backup. If a level 1 is specified but no level"
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" 0 is already available, a level 0 will be done and "
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"subsequently backs to level 1. Default 0 (No Incremental)"
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),
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cfg.IntOpt('always-level',
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dest='always_level',
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help="Set backup maximum level used with tar to implement "
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"incremental backup. If a level 3 is specified, the backup"
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" will be executed from level 0 to level 3 and to that "
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"point always a backup level 3 will be executed. It will "
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"not restart from level 0. This option has precedence over"
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" --max-backup-level. Default False (Disabled)"),
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cfg.FloatOpt('restart-always-level',
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dest='restart_always_level',
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help="Restart the backup from level 0 after n days. Valid only"
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" if --always-level option if set. If --always-level is "
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"used together with --remove-older-then, there might be "
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"the chance where the initial level 0 will be removed. "
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"Default False (Disabled)"),
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cfg.FloatOpt('remove-older-than',
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short='R',
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dest='remove_older_than',
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help="Checks in the specified container for object older than "
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"the specified days. If i.e. 30 is specified, it will "
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"remove the remote object older than 30 days. Default "
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"False (Disabled) The option --remove-older-then is "
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"deprecated and will be removed soon",
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deprecated_for_removal=True),
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cfg.StrOpt('remove-from-date',
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dest='remove_from_date',
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help="Checks the specified container and removes objects older "
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"than the provided datetime in the form "
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"'YYYY-MM-DDThh:mm:ss' i.e. '1974-03-25T23:23:23'. "
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"Make sure the 'T' is between date and time "),
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cfg.StrOpt('no-incremental',
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dest='no_incremental',
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help="Disable incremental feature. By default freezer build the"
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" meta data even for level 0 backup. By setting this option"
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" incremental meta data is not created at all. Default "
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"disabled"),
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cfg.StrOpt('hostname',
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dest='hostname',
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deprecated_name='restore-from-host',
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help="Set hostname to execute actions. If you are executing "
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"freezer from one host but you want to delete objects "
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"belonging to another host then you can set this option "
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"that hostname and execute appropriate actions. Default "
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"current node hostname."),
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cfg.StrOpt('mysql-conf',
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dest='mysql_conf',
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help="Set the MySQL configuration file where freezer retrieve "
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"important information as db_name, user, password, host, "
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"port. Following is an example of config file: "
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"# backup_mysql_conf"
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"host = <db-host>"
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"user = <mysqluser>"
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"password = <mysqlpass>"
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"port = <db-port>"),
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cfg.StrOpt('metadata-out',
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dest='metadata_out',
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help="Set the filename to which write the metadata regarding the"
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" backup metrics. Use '-' to output to standard output."),
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cfg.StrOpt('exclude',
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dest='exclude',
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help="Exclude files,given as a PATTERN.Ex: --exclude '*.log' "
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"will exclude any file with name ending with .log. "
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"Default no exclude"
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),
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cfg.StrOpt('dereference-symlink',
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dest='dereference_symlink',
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choices=['none', 'soft', 'hard', 'all'],
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help="Follow hard and soft links and archive and dump the files"
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" they refer to. Default False."
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),
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cfg.StrOpt('encrypt-pass-file',
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dest='encrypt_pass_file',
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help="Passing a private key to this option, allow you to encrypt"
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" the files before to be uploaded in Swift. Default do "
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"not encrypt."
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),
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cfg.IntOpt('max-segment-size',
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short='M',
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dest='max_segment_size',
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help="Set the maximum file chunk size in bytes to upload to "
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"swift Default 33554432 bytes (32MB)"
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),
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cfg.StrOpt('restore-abs-path',
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dest='restore_abs_path',
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help="Set the absolute path where you want your data restored. "
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"Default False."
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),
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cfg.StrOpt('restore-from-date',
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dest='restore_from_date',
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help="Set the date of the backup from which you want to restore."
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"This will select the most recent backup previous to "
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"the specified date (included). Example: "
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"if the last backup was created at '2016-03-22T14:29:01' "
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"and restore-from-date is set to '2016-03-22T14:29:01', "
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"the backup will be restored successfully. The same for "
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"any date after that, even if the provided date is in the "
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"future. However if restore-from-date is set to "
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"'2016-03-22T14:29:00' or before, that backup will not "
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"be found. "
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"Please provide datetime in format 'YYYY-MM-DDThh:mm:ss' "
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"i.e. '1979-10-03T23:23:23'. Make sure the 'T' is between "
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"date and time Default None."
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),
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cfg.StrOpt('max-priority',
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dest='max_priority',
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help="Set the cpu process to the highest priority (i.e. -20 on "
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"Linux) and real-time for I/O. The process priority will be"
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" set only if nice and ionice are installed Default "
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"disabled. Use with caution."
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),
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cfg.BoolOpt('quiet',
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short='q',
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dest='quiet',
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help="Suppress error messages"
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),
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cfg.BoolOpt('insecure',
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dest='insecure',
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help='Allow to access swift servers without checking SSL '
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'certs.'),
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cfg.StrOpt('os-identity-api-version',
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deprecated_name='os-auth-ver',
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dest='os_identity_api_version',
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choices=['1', '2', '2.0', '3'],
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help="Openstack identity api version, can be 1, 2, 2.0 or 3"
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),
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cfg.StrOpt('proxy',
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dest='proxy',
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help="Enforce proxy that alters system HTTP_PROXY and "
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"HTTPS_PROXY, use \'\' to eliminate all system proxies"
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),
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cfg.BoolOpt('dry-run',
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dest='dry_run',
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help="Do everything except writing or removing objects"
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),
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cfg.IntOpt('upload-limit',
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dest='upload_limit',
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help="Upload bandwidth limit in Bytes per sec. "
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"Can be invoked with dimensions (10K, 120M, 10G)."),
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cfg.IntOpt('download-limit',
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dest='download_limit',
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help="Download bandwidth limit in Bytes per sec. Can be invoked "
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" with dimensions (10K, 120M, 10G)."),
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cfg.StrOpt('cinder-vol-id',
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dest='cinder_vol_id',
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help="Id of cinder volume for backup"
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),
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cfg.StrOpt('cindernative-vol-id',
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dest='cindernative_vol_id',
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help="Id of cinder volume for native backup"
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),
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cfg.StrOpt('nova-inst-id',
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dest='nova_inst_id',
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help="Id of nova instance for backup"
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),
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cfg.StrOpt('sql-server-conf',
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dest='sql_server_conf',
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help="Set the SQL Server configuration file where freezer "
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"retrieve the sql server instance. Following is an example"
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" of config file: instance = <db-instance>"
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),
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cfg.StrOpt('command',
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dest='command',
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help="Command executed by exec action"
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),
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cfg.StrOpt('compression',
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dest='compression',
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choices=['gzip', 'bzip2', 'xz'],
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help="compression algorithm to use. gzip is default algorithm"
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),
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cfg.StrOpt('storage',
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dest='storage',
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choices=['local', 'swift', 'ssh'],
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help="Storage for backups. Can be Swift or Local now. Swift is "
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"default storage now. Local stores backups on the same "
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"defined path and swift will store files in container."
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),
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cfg.StrOpt('ssh-key',
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dest='ssh_key',
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help="Path to ssh-key for ssh storage only"
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),
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cfg.StrOpt('ssh-username',
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dest='ssh_username',
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help="Remote username for ssh storage only"
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),
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cfg.StrOpt('ssh-host',
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dest='ssh_host',
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help="Remote host for ssh storage only"
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),
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cfg.IntOpt('ssh-port',
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dest='ssh_port',
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help="Remote port for ssh storage only (default 22)"
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),
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cfg.StrOpt('config',
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dest='config',
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help="Config file abs path. Option arguments are provided from "
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"config file. When config file is used any option from "
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"command line provided take precedence."),
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cfg.BoolOpt('overwrite',
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dest='overwrite',
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help='With overwrite removes files from restore path before '
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'restore.'),
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]
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def config():
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CONF.register_opts(_COMMON)
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CONF.register_cli_opts(_COMMON)
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default_conf = None
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log.register_options(CONF)
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CONF(args=sys.argv[1:],
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project='freezer',
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default_config_files=default_conf,
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version=FREEZER_VERSION)
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def setup_logging():
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"""Set some oslo log defaults."""
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_DEFAULT_LOG_LEVELS = ['amqp=WARN', 'amqplib=WARN', 'boto=WARN',
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'qpid=WARN', 'stevedore=WARN', 'oslo_log=INFO',
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'iso8601=WARN',
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'requests.packages.urllib3.connectionpool=WARN',
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'urllib3.connectionpool=WARN', 'websocket=WARN',
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'keystonemiddleware=WARN', 'freezer=INFO']
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_DEFAULT_LOGGING_CONTEXT_FORMAT = (
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'%(asctime)s.%(msecs)03d %(process)d '
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'%(levelname)s %(name)s [%(request_id)s '
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'%(user_identity)s] %(instance)s'
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'%(message)s')
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# disable freezer from logging to stderr
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CONF.set_default('use_stderr', False)
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CONF.set_default('log_file', prepare_logging())
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log.set_defaults(_DEFAULT_LOGGING_CONTEXT_FORMAT, _DEFAULT_LOG_LEVELS)
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log.setup(CONF, 'freezer', version=FREEZER_VERSION)
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def get_backup_args():
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defaults = DEFAULT_PARAMS.copy()
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class FreezerConfig(object):
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def __init__(self, args):
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self.__dict__.update(args)
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cli_options = dict([(x, y) for x, y in CONF.iteritems() if y is not None])
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defaults.update(cli_options)
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conf = None
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if CONF.get('config'):
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conf = freezer_config.Config.parse(CONF.get('config'))
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defaults.update(conf.default)
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# TODO: restore_from_host is deprecated and to be removed
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defaults['hostname'] = conf.default.get('hostname') or \
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conf.default.get('restore_from_host')
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# override default oslo values
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levels = {
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'all': log.NOTSET,
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'debug': log.DEBUG,
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'warn': log.WARN,
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'info': log.INFO,
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'error': log.ERROR,
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'critical': log.CRITICAL
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}
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if not CONF.get('log_file'):
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CONF.set_override('log_file', levels.get(defaults['log_file'],
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log.NOTSET))
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CONF.set_override('default_log_levels', defaults['log_level'])
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if not CONF.get('log_file'):
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log_file = None
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for file_name in ['/var/log/freezer.log', '~/.freezer/freezer.log']:
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try:
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log_file = prepare_logging(file_name)
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except IOError:
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pass
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if log_file:
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CONF.set_default('log_file', log_file)
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else:
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LOG.warn("log file cannot be created. Freezer will proceed with "
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"default stdout and stderr")
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backup_args = FreezerConfig(defaults)
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# Set default working directory to ~/.freezer. If the directory
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# does not exists it is created
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work_dir = os.path.join(home, '.freezer')
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backup_args.__dict__['work_dir'] = work_dir
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if not os.path.exists(work_dir):
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try:
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os.makedirs(work_dir)
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except (OSError, IOError) as err_msg:
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# This avoids freezer-agent to crash if it can't write to
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# ~/.freezer, which may happen on some env (for me,
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# it happens in Jenkins, as freezer-agent can't write to
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# /var/lib/jenkins).
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print(encodeutils.safe_decode('{}'.format(err_msg)),
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file=sys.stderr)
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# If hostname is not set, hostname of the current node will be used
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if not backup_args.hostname:
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backup_args.__dict__['hostname'] = socket.gethostname()
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# If we have provided --proxy then overwrite the system HTTP_PROXY and
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# HTTPS_PROXY
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if backup_args.proxy:
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utils.alter_proxy(backup_args.proxy)
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# MySQLdb object
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backup_args.__dict__['mysql_db_inst'] = ''
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backup_args.__dict__['storages'] = None
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if conf and conf.storages:
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backup_args.__dict__['storages'] = conf.storages
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# Windows volume
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backup_args.__dict__['shadow'] = ''
|
|
backup_args.__dict__['shadow_path'] = ''
|
|
backup_args.__dict__['file_name'] = ''
|
|
if winutils.is_windows():
|
|
if backup_args.path_to_backup:
|
|
backup_args.__dict__['windows_volume'] = \
|
|
backup_args.path_to_backup[:3]
|
|
|
|
# todo(enugaev) move it to new command line param backup_media
|
|
backup_media = 'fs'
|
|
if backup_args.cinder_vol_id:
|
|
backup_media = 'cinder'
|
|
elif backup_args.cindernative_vol_id:
|
|
backup_media = 'cindernative'
|
|
elif backup_args.nova_inst_id:
|
|
backup_media = 'nova'
|
|
|
|
backup_args.__dict__['backup_media'] = backup_media
|
|
|
|
backup_args.__dict__['time_stamp'] = None
|
|
|
|
if backup_args.upload_limit or backup_args.download_limit and not\
|
|
winutils.is_windows():
|
|
if backup_args.config:
|
|
conf_file = NamedTemporaryFile(prefix='freezer_job_', delete=False)
|
|
defaults['upload_limit'] = defaults['download_limit'] = -1
|
|
utils.save_config_to_file(defaults, conf_file)
|
|
conf_index = sys.argv.index('--config') + 1
|
|
sys.argv[conf_index] = conf_file.name
|
|
|
|
if '--upload-limit' in sys.argv:
|
|
index = sys.argv.index('--upload-limit')
|
|
sys.argv.pop(index)
|
|
sys.argv.pop(index)
|
|
if '--download-limit' in sys.argv:
|
|
index = sys.argv.index('--download-limit')
|
|
sys.argv.pop(index)
|
|
sys.argv.pop(index)
|
|
|
|
trickle_executable = distspawn.find_executable('trickle')
|
|
if trickle_executable is None:
|
|
trickle_executable = distspawn.find_executable(
|
|
'trickle', path=":".join(sys.path))
|
|
if trickle_executable is None:
|
|
trickle_executable = distspawn.find_executable(
|
|
'trickle', path=":".join(os.environ.get('PATH')))
|
|
|
|
trickle_lib = distspawn.find_executable('trickle-overload.so')
|
|
if trickle_lib is None:
|
|
trickle_lib = distspawn.find_executable(
|
|
'trickle-overload.so', path=":".join(sys.path))
|
|
if trickle_lib is None:
|
|
trickle_lib = distspawn.find_executable(
|
|
'trickle-overload.so', path=":".join(
|
|
os.environ.get('PATH')))
|
|
if trickle_executable and trickle_lib:
|
|
LOG.info("[*] Info: Starting trickle ...")
|
|
os.environ['LD_PRELOAD'] = trickle_lib
|
|
trickle_command = '{0} -d {1} -u {2} '.\
|
|
format(trickle_executable,
|
|
getattr(backup_args, 'download_limit') or -1,
|
|
getattr(backup_args, 'upload_limit') or -1)
|
|
backup_args.__dict__['trickle_command'] = trickle_command
|
|
if "tricklecount" in os.environ:
|
|
tricklecount = int(os.environ.get("tricklecount", 1))
|
|
tricklecount += 1
|
|
os.environ["tricklecount"] = str(tricklecount)
|
|
|
|
else:
|
|
os.environ["tricklecount"] = str(1)
|
|
else:
|
|
LOG.critical("[*] Trickle or Trickle library not found. Switching "
|
|
"to normal mode without limiting bandwidth")
|
|
return backup_args
|
|
|
|
|
|
def prepare_logging(log_file='~/.freezer/freezer.log'):
|
|
"""
|
|
Creates log directory and log file if no log files provided
|
|
:return:
|
|
"""
|
|
expanded_file_name = os.path.expanduser(log_file)
|
|
expanded_dir_name = os.path.dirname(expanded_file_name)
|
|
utils.create_dir(expanded_dir_name, do_log=False)
|
|
return expanded_file_name
|
|
|
|
|
|
def list_opts():
|
|
_OPTS = {
|
|
None: _COMMON
|
|
}
|
|
|
|
return _OPTS.items()
|