Percona XtraBackup 2.4 部署
官方文档
https://www.percona.com/doc/percona-xtrabackup/2.4/index.html
Percona XtraBackup介绍
Percona XtraBackup是基于MySQL的服务器的开源热备份实用程序，在备份期间不会锁定您的数据库。
它可以备份MySQL 5.1 、5.5、5.6 和 5.7 服务器上的InnoDB、XtraDB 和MyISAM表中的 数据，以及带有 XtraDB的Percona Server for MySQL 。
Percona XtraBackup 二进制安装
$ wget https://downloads.percona.com/downloads/Percona-XtraBackup-2.4/Percona-XtraBackup-2.4.27/binary/tarball/percona-xtrabackup-2.4.27-Linux-x86_64.glibc2.12.tar.gz
$ tar xvf percona-xtrabackup-2.4.27-Linux-x86_64.glibc2.12.tar.gz -C /usr/local/Percona XtraBackup 连接配置
Percona XtraBackup需要能够连接到数据库服务器并在创建备份时、在某些情况下准备时以及在恢复时对服务器和datadir执行操作。为此，必须满足其执行的特权和权限要求。
权限是指允许系统用户在数据库服务器中进行的操作。它们是在数据库服务器上设置的，仅适用于数据库服务器中的用户。
权限是允许用户在系统上执行操作的权限，例如在某个目录上读取、写入或执行或启动/停止系统服务。它们是在系统级别设置的，仅适用于系统用户。
$ xtrabackup --user=DVADER --password=14MY0URF4TH3R --backup \
--target-dir=/data/bkps/
$ innobackupex --user=DBUSER --password=SECRET /path/to/backup/dir/
$ innobackupex --user=LUKE --password=US3TH3F0RC3 --stream=tar ./ | bzip2 -Percona XtraBackup 所需的权限
数据库用户需要对要备份的表/数据库具有以下权限：
RELOAD和（除非指定了 –no-lock <innobackupex –no-lock>选项）以便在开始复制文件之前和开始复制文件，并且 在使用备份锁时需要此权限 。LOCK TABLESFLUSH TABLES WITH READ LOCKFLUSH ENGINE LOGSLOCK TABLES FOR BACKUPLOCK BINLOG FOR BACKUPREPLICATION CLIENT为了获得二进制日志位置。CREATE TABLESPACE为了导入表（请参阅恢复单个表）。PROCESS为了运行（这是强制性的），并且可以选择查看在服务器上运行的所有线程（请参阅改进的 FLUSH TABLES WITH READ LOCK 处理）。SHOW ENGINE INNODB STATUSSUPER为了在复制环境中启动/停止副本线程，请使用XtraDB Changed Page Tracking for Incremental Backups和改进 FLUSH TABLES WITH READ LOCK 处理。CREATE权限以创建 PERCONA_SCHEMA.xtrabackup_history数据库和表。ALTER权限以升级 PERCONA_SCHEMA.xtrabackup_history数据库和表。INSERT权限，以便将历史记录添加到 PERCONA_SCHEMA.xtrabackup_history表。SELECT特权，以便使用 innobackupex –incremental-history-name或 innobackupex –incremental-history-uuid以便该功能在PERCONA_SCHEMA.xtrabackup_history表中查找innodb_to_lsn值 。
创建具有完整备份所需的最低权限的数据库用户的 SQL 示例如下：
mysql> CREATE USER 'bkpuser'@'localhost' IDENTIFIED BY 's3cret';
mysql> GRANT SELECT, RELOAD, LOCK TABLES, PROCESS, REPLICATION CLIENT ON *.* TO
'bkpuser'@'localhost';
mysql> FLUSH PRIVILEGES;qpress 安装
APT repo安装
$ wget https://repo.percona.com/apt/percona-release_latest.$(lsb_release -sc)_all.deb
$ sudo dpkg -i percona-release_latest.$(lsb_release -sc)_all.deb
$ sudo apt update
$ sudo apt -y install qpress二进制安装
## 下载可执行文件的tar包
wget "http://docs-aliyun.cn-hangzhou.oss.aliyun-inc.com/assets/attach/183466/cn_zh/1608011575185/qpress-11-linux-x64.tar"
## 解压下载的tar包，取出可执行文件
tar xvf qpress-11-linux-x64.tar
## 设置qpress文件的执行权限
chmod 775 qpress
## 拷贝qpress到/usr/bin中
cp qpress /usr/binqpress使用帮助
# qpress -v
qpress 1.1 - Copyright 2006-2010 Lasse Reinhold - www.quicklz.com
Using QuickLZ 1.4.1 compression library
Compiled for: Windows [*nix] [x86/x64] RISC 32-bit [64-bit]
Compression:
qpress [-rovfCBPLKT] <source file/dir search pattern> <destination file>
qpress -i[ovfBPLKT] <filename to give stdin data> <destination file>
Decompression:
qpress -d[ovfBPTn] <source file> <destination directory>
Benchmark and recovery:
qpress -m[LT] <source file>
qpress -R <corrupted compressed file> <destination directory>
Flags:
-d Decompress
-Ln Set compression level to n where n = 1, 2 or 3 (default = 1)
-r Include sub directories during compression
-v Show progress information during compression and decompression
-i Read from stdin (omit source file or file/dir search pattern)
-o Write to stdout (omit destination file or directory)
-f Overwrite existing files during compression and decompression (default
is to abort)
-C Continue if a source file cannot be opened during compression (default
is to abort)
-Tn Use n threads/cores where n = 1 to 256 (default = 2). Be aware of
memory usage with large n
-Kn Read from disk in n KiB chunks during compression where n = 64 to
32768 (default = 64). Be aware of memory usage with large n
-B Windows only: Disable file system caching (FILE_FLAG_NO_BUFFERING) to
prevent cache of other applications from being be flushed. Keep
enabled if files are small and need further processing
-Pn Windows only: Set CPU and disk I/O priority to n where 1 = BACKGORUND
(Vista, 7, 2008 only), 2 = IDLE, 3 = NORMAL or 4 = ABOVE (default = 3)
Examples of compression:
qpress -v file1.xml file2.xml file3.xml database.qp
qpress -vfK4096T2 *.xml database.qp 2> log.txt
qpress -ovL3K *.xml > database.qp
cat database.xml | qpress -i database.xml database.qp
cat database.xml | qpress -io database.xml > database.qp
Examples of decompression:
qpress -d database.qp ./dir
qpress -do database.qp > database.xml
cat database.qp | qpress -di .
Notes:
When compressing on *nix with -r flag, file/dir search pattern only filters in
top level directory (directories matching in top level will be included fully).
If a compressed file contains multiple files and is decompressed to stdout, all
files will be concatenated in a continuous stream.
It's recommended to use .qp as filename suffix.常用选项
--host # 指定主机
--user # 指定用户名
--password # 指定密码
--port # 指定端口
--databases # 指定数据库
--incremental # 创建增量备份
--incremental-basedir # 指定包含完全备份的目录
--incremental-dir # 指定包含增量备份的目录
--prepare # 对备份进行预处理
--redo-only # 不会滚未提交事务
--copy-back # 恢复备份目录
--parallel # 并行个数，根据主机配置选择合适的，默认是1个，多个可以加快备份速度
--use-memory # 该参数在prepare的时候使用，控制prepare时innodb实例使用的内存量
--compress # 对备份数据进行压缩
--stream # 将所有备份文件以指定格式流式传输到标准输出。当前支持的格式为“tar”和“xbstream”
--socket # 指定mysql.sock所在位置，以便备份进程登录mysql
--slave-info # 备份从库, 加上–slave-info备份目录下会多生成一个xtrabackup_slave_info 文件, 这里会保存主日志文件以及偏移, 文件内容类似于:CHANGE MASTER TO MASTER_LOG_FILE=”, MASTER_LOG_POS=0xtrabackup 使用帮助
查看代码
Open source backup tool for InnoDB and XtraDB
Copyright (C) 2009-2017 Percona LLC and/or its affiliates.
Portions Copyright (C) 2000, 2011, MySQL AB & Innobase Oy. All Rights Reserved.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation version 2
of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You can download full text of the license on http://www.gnu.org/licenses/gpl-2.0.txt
Usage: [xtrabackup [--defaults-file=#] --backup | xtrabackup [--defaults-file=#] --prepare] [OPTIONS]
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /mnt/workspace/percona-xtrabackup-2.4-binary-tarball/label_exp/min-centos-6-x64/TARGET/xtrabackup-build.3sdSjN/percona-xtrabackup-2.4.27-Linux-x86_64.glibc2.12/etc/my.cnf ~/.my.cnf
The following groups are read: xtrabackup mysqld
The following options may be given as the first argument:
--print-defaults Print the program argument list and exit.
--no-defaults Don't read default options from any option file,
except for login file.
--defaults-file=# Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.
--defaults-group-suffix=#
Also read groups with concat(group, suffix)
--login-path=# Read this path from the login file.
-v, --version print xtrabackup version information
--target-dir=name destination directory
--backup take backup to target-dir
--stats calc statistic of datadir (offline mysqld is recommended)
--prepare prepare a backup for starting mysql server on the backup.
--export create files to import to another database when prepare.
--apply-log-only stop recovery process not to progress LSN after applying
log when prepare.
--print-param print parameter of mysqld needed for copyback.
--use-memory=# The value is used instead of buffer_pool_size
--throttle=# limit count of IO operations (pairs of read&write) per
second to IOS values (for '--backup')
--log[=name] Ignored option for MySQL option compatibility
--log-copy-interval=#
time interval between checks done by log copying thread
in milliseconds (default is 1 second).
--extra-lsndir=name (for --backup): save an extra copy of the
xtrabackup_checkpoints file in this directory.
--incremental-lsn=name
(for --backup): copy only .ibd pages newer than specified
LSN 'high:low'. ##ATTENTION##: If a wrong LSN value is
specified, it is impossible to diagnose this, causing the
backup to be unusable. Be careful!
--incremental-basedir=name
(for --backup): copy only .ibd pages newer than backup at
specified directory.
--incremental-dir=name
(for --prepare): apply .delta files and logfile in the
specified directory.
--to-archived-lsn=# Don't apply archived logs with bigger log sequence
number.
--tables=name filtering by regexp for table names.
--tables-file=name filtering by list of the exact database.table name in the
file.
--databases=name filtering by list of databases.
--databases-file=name
filtering by list of databases in the file.
--tables-exclude=name
filtering by regexp for table names. Operates the same
way as --tables, but matched names are excluded from
backup. Note that this option has a higher priority than
--tables.
--databases-exclude=name
Excluding databases based on name, Operates the same way
as --databases, but matched names are excluded from
backup. Note that this option has a higher priority than
--databases.
--create-ib-logfile ** not work for now** creates ib_logfile* also after
'--prepare'. ### If you want create ib_logfile*, only
re-execute this command in same options. ###
--stream=name Stream all backup files to the standard output in the
specified format. Currently supported formats are 'tar'
and 'xbstream'.
--compress[=name] Compress individual backup files using the specified
compression algorithm. Currently the only supported
algorithm is 'quicklz'. It is also the default algorithm,
i.e. the one used when --compress is used without an
argument.
--compress-threads=#
Number of threads for parallel data compression. The
default value is 1.
--compress-chunk-size=#
Size of working buffer(s) for compression threads in
bytes. The default value is 64K.
--encrypt=name Encrypt individual backup files using the specified
encryption algorithm.
--encrypt-key=name Encryption key to use.
--encrypt-key-file=name
File which contains encryption key to use.
--encrypt-threads=# Number of threads for parallel data encryption. The
default value is 1.
--encrypt-chunk-size=#
Size of working buffer(S) for encryption threads in
bytes. The default value is 64K.
--compact Create a compact backup by skipping secondary index
pages.
--rebuild-indexes Rebuild secondary indexes in InnoDB tables after applying
the log. Only has effect with --prepare.
--rebuild-threads=# Use this number of threads to rebuild indexes in a
compact backup. Only has effect with --prepare and
--rebuild-indexes.
--incremental-force-scan
Perform a full-scan incremental backup even in the
presence of changed page bitmap data
--close-files do not keep files opened. Use at your own risk.
--core-file Write core on fatal signals
--copy-back Copy all the files in a previously made backup from the
backup directory to their original locations.
--move-back Move all the files in a previously made backup from the
backup directory to the actual datadir location. Use with
caution, as it removes backup files.
--galera-info This options creates the xtrabackup_galera_info file
which contains the local node state at the time of the
backup. Option should be used when performing the backup
of Percona-XtraDB-Cluster. Has no effect when backup
locks are used to create the backup.
--slave-info This option is useful when backing up a replication slave
server. It prints the binary log position and name of the
master server. It also writes this information to the
"xtrabackup_slave_info" file as a "CHANGE MASTER"
command. A new slave for this master can be set up by
starting a slave server on this backup and issuing a
"CHANGE MASTER" command with the binary log position
saved in the "xtrabackup_slave_info" file.
--no-lock Use this option to disable table lock with "FLUSH TABLES
WITH READ LOCK". Use it only if ALL your tables are
InnoDB and you DO NOT CARE about the binary log position
of the backup. This option shouldn't be used if there are
any DDL statements being executed or if any updates are
happening on non-InnoDB tables (this includes the system
MyISAM tables in the mysql database), otherwise it could
lead to an inconsistent backup. If you are considering to
use --no-lock because your backups are failing to acquire
the lock, this could be because of incoming replication
events preventing the lock from succeeding. Please try
using --safe-slave-backup to momentarily stop the
replication slave thread, this may help the backup to
succeed and you then don't need to resort to using this
option.
--lock-ddl Issue LOCK TABLES FOR BACKUP if it is supported by server
at the beginning of the backup to block all DDL
operations.
--lock-ddl-timeout=#
If LOCK TABLES FOR BACKUP does not return within given
timeout, abort the backup.
--lock-ddl-per-table
Lock DDL for each table before xtrabackup starts the copy
phase and until the backup is completed.
--backup-lock-timeout=#
Timeout in seconds for attempts to acquire metadata
locks.
--backup-lock-retry-count=#
Number of attempts to acquire metadata locks.
--dump-innodb-buffer-pool
Instruct MySQL server to dump innodb buffer pool by
issuing a SET GLOBAL innodb_buffer_pool_dump_now=ON
--dump-innodb-buffer-pool-timeout=#
This option specifies the number of seconds xtrabackup
waits for innodb buffer pool dump to complete
--dump-innodb-buffer-pool-pct=#
This option specifies the percentage of buffer pool to be
dumped
--safe-slave-backup Stop slave SQL thread and wait to start backup until
Slave_open_temp_tables in "SHOW STATUS" is zero. If there
are no open temporary tables, the backup will take place,
otherwise the SQL thread will be started and stopped
until there are no open temporary tables. The backup will
fail if Slave_open_temp_tables does not become zero after
--safe-slave-backup-timeout seconds. The slave SQL thread
will be restarted when the backup finishes.
--rsync Uses the rsync utility to optimize local file transfers.
When this option is specified, innobackupex uses rsync to
copy all non-InnoDB files instead of spawning a separate
cp for each file, which can be much faster for servers
with a large number of databases or tables. This option
cannot be used together with --stream.
--force-non-empty-directories
This option, when specified, makes --copy-back or
--move-back transfer files to non-empty directories. Note
that no existing files will be overwritten. If
--copy-back or --nove-back has to copy a file from the
backup directory which already exists in the destination
directory, it will still fail with an error.
--no-version-check This option disables the version check which is enabled
by the --version-check option.
--tables-compatibility-check
This option enables engine compatibility warning.
(Defaults to on; use --skip-tables-compatibility-check to disable.)
--no-backup-locks This option controls if backup locks should be used
instead of FLUSH TABLES WITH READ LOCK on the backup
stage. The option has no effect when backup locks are not
supported by the server. This option is enabled by
default, disable with --no-backup-locks.
--decompress Decompresses all files with the .qp extension in a backup
previously made with the --compress option.
-u, --user=name This option specifies the MySQL username used when
connecting to the server, if that's not the current user.
The option accepts a string argument. See mysql --help
for details.
-H, --host=name This option specifies the host to use when connecting to
the database server with TCP/IP. The option accepts a
string argument. See mysql --help for details.
-P, --port=# This option specifies the port to use when connecting to
the database server with TCP/IP. The option accepts a
string argument. See mysql --help for details.
-p, --password[=name]
This option specifies the password to use when connecting
to the database. It accepts a string argument. See mysql
--help for details.
-S, --socket=name This option specifies the socket to use when connecting
to the local database server with a UNIX domain socket.
The option accepts a string argument. See mysql --help
for details.
--incremental-history-name=name
This option specifies the name of the backup series
stored in the PERCONA_SCHEMA.xtrabackup_history history
record to base an incremental backup on. Xtrabackup will
search the history table looking for the most recent
(highest innodb_to_lsn), successful backup in the series
and take the to_lsn value to use as the starting lsn for
the incremental backup. This will be mutually exclusive
with --incremental-history-uuid, --incremental-basedir
and --incremental-lsn. If no valid lsn can be found (no
series by that name, no successful backups by that name)
xtrabackup will return with an error. It is used with the
--incremental option.
--incremental-history-uuid=name
This option specifies the UUID of the specific history
record stored in the PERCONA_SCHEMA.xtrabackup_history to
base an incremental backup on.
--incremental-history-name, --incremental-basedir and
--incremental-lsn. If no valid lsn can be found (no
success record with that uuid) xtrabackup will return
with an error. It is used with the --incremental option.
--decrypt=name Decrypts all files with the .xbcrypt extension in a
backup previously made with --encrypt option.
--remove-original Remove .qp and .xbcrypt files after decryption and
decompression.
--ftwrl-wait-query-type=name
This option specifies which types of queries are allowed
to complete before innobackupex will issue the global
lock. Default is all.
--kill-long-query-type=name
This option specifies which types of queries should be
killed to unblock the global lock. Default is "SELECT".
--history[=name] This option enables the tracking of backup history in the
PERCONA_SCHEMA.xtrabackup_history table. An optional
history series name may be specified that will be placed
with the history record for the current backup being
taken.
--kill-long-queries-timeout=#
This option specifies the number of seconds innobackupex
waits between starting FLUSH TABLES WITH READ LOCK and
killing those queries that block it. Default is 0
seconds, which means innobackupex will not attempt to
kill any queries.
--ftwrl-wait-timeout=#
This option specifies time in seconds that innobackupex
should wait for queries that would block FTWRL before
running it. If there are still such queries when the
timeout expires, innobackupex terminates with an error.
Default is 0, in which case innobackupex does not wait
for queries to complete and starts FTWRL immediately.
--ftwrl-wait-threshold=#
This option specifies the query run time threshold which
is used by innobackupex to detect long-running queries
with a non-zero value of --ftwrl-wait-timeout. FTWRL is
not started until such long-running queries exist. This
option has no effect if --ftwrl-wait-timeout is 0.
Default value is 60 seconds.
--debug-sleep-before-unlock=#
This is a debug-only option used by the XtraBackup test
suite.
--safe-slave-backup-timeout=#
How many seconds --safe-slave-backup should wait for
Slave_open_temp_tables to become zero. (default 300)
--binlog-info[=name]
This option controls how XtraBackup should retrieve
server's binary log coordinates corresponding to the
backup. Possible values are OFF, ON, LOCKLESS and AUTO.
See the XtraBackup manual for more information
--reencrypt-for-server-id=#
Re-encrypt tablespace keys for given server-id.
--check-privileges Check database user privileges before performing any
query.
--read-buffer-size[=#]
Set datafile read buffer size, given value is scaled up
to page size. Default is 10Mb.
--ssl-mode=name SSL connection mode.
--ssl Deprecated. Use --ssl-mode instead.
(Defaults to on; use --skip-ssl to disable.)
--ssl-verify-server-cert
Deprecated. Use --ssl-mode=VERIFY_IDENTITY instead.
--ssl-ca=name CA file in PEM format.
--ssl-capath=name CA directory.
--ssl-cert=name X509 cert in PEM format.
--ssl-cipher=name SSL cipher to use.
--ssl-key=name X509 key in PEM format.
--ssl-crl=name Certificate revocation list.
--ssl-crlpath=name Certificate revocation list path.
--tls-version=name TLS version to use, permitted values are: TLSv1, TLSv1.1,
TLSv1.2
--server-public-key-path=name
File path to the server public RSA key in PEM format.
-h, --datadir=name Path to the database root.
-t, --tmpdir=name Path for temporary files. Several paths may be specified,
separated by a colon (:), in this case they are used in a
round-robin fashion.
--parallel=# Number of threads to use for parallel datafiles transfer.
The default value is 1.
--log[=name] Ignored option for MySQL option compatibility
--log-bin[=name] Base name for the log sequence
--innodb[=name] Ignored option for MySQL option compatibility
--innodb-adaptive-hash-index
Enable InnoDB adaptive hash index (enabled by default).
Disable with --skip-innodb-adaptive-hash-index.
(Defaults to on; use --skip-innodb-adaptive-hash-index to disable.)
--innodb-autoextend-increment=#
Data file autoextend increment in megabytes
--innodb-buffer-pool-size=#
The size of the memory buffer InnoDB uses to cache data
and indexes of its tables.
--innodb-checksums Enable InnoDB checksums validation (enabled by default).
Disable with --skip-innodb-checksums.
(Defaults to on; use --skip-innodb-checksums to disable.)
--innodb-data-file-path=name
Path to individual files and their sizes.
--innodb-data-home-dir=name
The common part for InnoDB table spaces.
--innodb-doublewrite
Enable InnoDB doublewrite buffer (enabled by default).
Disable with --skip-innodb-doublewrite.
(Defaults to on; use --skip-innodb-doublewrite to disable.)
--innodb-io-capacity[=#]
Number of IOPs the server can do. Tunes the background IO
rate
--innodb-file-io-threads=#
Number of file I/O threads in InnoDB.
--innodb-read-io-threads=#
Number of background read I/O threads in InnoDB.
--innodb-write-io-threads=#
Number of background write I/O threads in InnoDB.
--innodb-file-per-table
Stores each InnoDB table to an .ibd file in the database
dir.
--innodb-flush-log-at-trx-commit[=#]
Set to 0 (write and flush once per second), 1 (write and
flush at each commit) or 2 (write at commit, flush once
per second).
--innodb-flush-method=name
With which method to flush data.
--innodb-force-recovery=#
Helps to save your data in case the disk image of the
database becomes corrupt.
--innodb-log-arch-dir=name
Where full logs should be archived.
--innodb-log-buffer-size=#
The size of the buffer which InnoDB uses to write log to
the log files on disk.
--innodb-log-file-size=#
Size of each log file in a log group.
--innodb-log-files-in-group=#
Number of log files in the log group. InnoDB writes to
the files in a circular fashion. Value 3 is recommended
here.
--innodb-log-group-home-dir=name
Path to InnoDB log files.
--innodb-max-dirty-pages-pct=#
Percentage of dirty pages allowed in bufferpool.
--innodb-open-files=#
How many files at the maximum InnoDB keeps open at the
same time.
--innodb-use-native-aio
Use native AIO if supported on this platform.
--innodb-page-size=#
The universal page size of the database.
--innodb-log-block-size=#
The log block size of the transaction log file. Changing
for created log file is not supported. Use on your own
risk!
--innodb-fast-checksum
Change the algorithm of checksum for the whole of
datapage to 4-bytes word based.
--innodb-doublewrite-file=name
Path to special datafile for doublewrite buffer. (default
is : not used)
--innodb-buffer-pool-filename=name
Filename to/from which to dump/load the InnoDB buffer
pool
--debug-sync=name Debug sync point. This is only used by the xtrabackup
test suite
-#, --debug[=name] Output debug log. Default all ib_log output to stderr. To
redirect all ib_log output to separate file, use
--debug=d,ib_log:o,/tmp/xtrabackup.trace
--innodb-checksum-algorithm=name
The algorithm InnoDB uses for page checksumming. [CRC32,
STRICT_CRC32, INNODB, STRICT_INNODB, NONE, STRICT_NONE]
--innodb-log-checksum-algorithm=name
The algorithm InnoDB uses for log checksumming. [CRC32,
STRICT_CRC32, INNODB, STRICT_INNODB, NONE, STRICT_NONE]
--innodb-undo-directory=name
Directory where undo tablespace files live, this path can
be absolute.
--innodb-undo-tablespaces=#
Number of undo tablespaces to use.
--defaults-group=name
defaults group in config file (default "mysqld").
--open-files-limit=#
the maximum number of file descriptors to reserve with
setrlimit().
--redo-log-version=#
Redo log version of the backup. For --prepare only.
--server-id=# The server instance being backed up
--transition-key[=name]
Transition key to encrypt tablespace keys with.
--xtrabackup-plugin-dir=name
Directory for xtrabackup plugins.
--generate-new-master-key
Generate new master key when doing copy-back.
--generate-transition-key
Generate transition key and store it into keyring.
Variables (--variable-name=value)
and boolean options {FALSE|TRUE} Value (after reading options)
--------------------------------- ----------------------------------------
datadir .
tmpdir /tmp
parallel 1
log (No default value)
log-bin (No default value)
innodb (No default value)
innodb-adaptive-hash-index TRUE
innodb-autoextend-increment 8
innodb-buffer-pool-size 8388608
innodb-checksums TRUE
innodb-data-file-path (No default value)
innodb-data-home-dir (No default value)
innodb-doublewrite TRUE
innodb-io-capacity 200
innodb-file-io-threads 4
innodb-read-io-threads 4
innodb-write-io-threads 4
innodb-file-per-table FALSE
innodb-flush-log-at-trx-commit 1
innodb-flush-method (No default value)
innodb-force-recovery 0
innodb-log-arch-dir (No default value)
innodb-log-buffer-size 16777216
innodb-log-file-size 50331648
innodb-log-files-in-group 2
innodb-log-group-home-dir (No default value)
innodb-max-dirty-pages-pct 75
innodb-open-files 300
innodb-use-native-aio FALSE
innodb-page-size 16384
innodb-log-block-size 512
innodb-fast-checksum FALSE
innodb-doublewrite-file (No default value)
innodb-buffer-pool-filename (No default value)
debug-sync (No default value)
debug (No default value)
innodb-checksum-algorithm innodb
innodb-log-checksum-algorithm innodb
innodb-undo-directory (No default value)
innodb-undo-tablespaces 0
defaults-group mysqld
open-files-limit 0
redo-log-version 1
server-id 0
xtrabackup-plugin-dir (No default value)
generate-new-master-key FALSE
generate-transition-key FALSE
Variables (--variable-name=value)
and boolean options {FALSE|TRUE} Value (after reading options)
--------------------------------- ----------------------------------------
version FALSE
target-dir /root/xtrabackup_backupfiles/
backup FALSE
stats FALSE
prepare FALSE
export FALSE
apply-log-only FALSE
print-param FALSE
use-memory 104857600
throttle 0
log (No default value)
log-copy-interval 1000
extra-lsndir (No default value)
incremental-lsn (No default value)
incremental-basedir (No default value)
incremental-dir (No default value)
to-archived-lsn 0
tables (No default value)
tables-file (No default value)
databases (No default value)
databases-file (No default value)
tables-exclude (No default value)
databases-exclude (No default value)
create-ib-logfile FALSE
stream (No default value)
compress (No default value)
compress-threads 1
compress-chunk-size 65536
encrypt NONE
encrypt-key-file (No default value)
encrypt-threads 1
encrypt-chunk-size 65536
compact FALSE
rebuild-indexes FALSE
rebuild-threads 1
incremental-force-scan FALSE
close-files FALSE
copy-back FALSE
move-back FALSE
galera-info FALSE
slave-info FALSE
no-lock FALSE
lock-ddl FALSE
lock-ddl-timeout 31536000
lock-ddl-per-table FALSE
backup-lock-timeout 31536000
backup-lock-retry-count 0
dump-innodb-buffer-pool FALSE
dump-innodb-buffer-pool-timeout 10
dump-innodb-buffer-pool-pct 0
safe-slave-backup FALSE
rsync FALSE
force-non-empty-directories FALSE
no-version-check FALSE
tables-compatibility-check TRUE
no-backup-locks FALSE
decompress FALSE
user (No default value)
host (No default value)
port 0
socket (No default value)
incremental-history-name (No default value)
incremental-history-uuid (No default value)
decrypt NONE
remove-original FALSE
ftwrl-wait-query-type ALL
kill-long-query-type SELECT
kill-long-queries-timeout 0
ftwrl-wait-timeout 0
ftwrl-wait-threshold 60
debug-sleep-before-unlock 0
safe-slave-backup-timeout 300
binlog-info auto
reencrypt-for-server-id 0
check-privileges FALSE
read-buffer-size 10485760
ssl TRUE
ssl-verify-server-cert FALSE
ssl-ca (No default value)
ssl-capath (No default value)
ssl-cert (No default value)
ssl-cipher (No default value)
ssl-key (No default value)
ssl-crl (No default value)
ssl-crlpath (No default value)
tls-version TLSv1,TLSv1.1,TLSv1.2
server-public-key-path (No default value)
