技术标签: mysql
xtrabackup 安装及删除
xtrabackup 安装
yum install https://repo.percona.com/yum/percona-release-latest.noarch.rpm
percona-release enable-only tools release
yum install percona-xtrabackup-80
#使用压缩功能,选装qpress
yum install qpress
xtrabackup 删除:yum remove percona-xtrabackup
用法:xtrabackup [--defaults-file] mode options,xtrabackup支持以下模式
--backup:备份数据
--prepare:修复备份文件数据
--copy-back:复制prepare后的数据到指定目录
--move-back:移动prepare后的数据到指定目录
--stats:扫描指定的数据文件、输出统计数据
[root@centos ~]# xtrabackup --help
xtrabackup: recognized server arguments: --datadir=/var/lib/mysql
xtrabackup version 8.0.25-17 based on MySQL server 8.0.25 Linux (x86_64) (revision id: d27028b)
Open source backup tool for InnoDB and XtraDB
Copyright (C) 2009-2019 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]
#默认参数读取顺序
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/etc/my.cnf ~/.my.cnf
The following groups are read: xtrabackup mysqld
# xtrabackup 第一个参数
The following options may be given as the first argument:
--print-defaults Print the program argument list and exit. #输出参数列表,然后退出
--no-defaults Don't read default options from any option file,
except for login file. #除了login file文件,不从其他文件中读取参数配置信息
--defaults-file=# Only read default options from the given file #. #指从指定的文件中读取默认参数信息
--defaults-extra-file=# Read this file after the global files are read. #读取全局文件后,再读取该文件
--defaults-group-suffix=# Read the configuration groups with the given suffix
Also read groups with concat(group, suffix) #根据指定后缀读取配置文件组
--login-path=# Read this path from the login file. #从login file的指定路径下读取配置信息
# xtrabackup mode,只能选择其中之一
--backup take backup to target-dir #备份数据到指定目录
--prepare prepare a backup for starting mysql server on the backup. #对备份后的数据进行预处理
--copy-back Copy all the files in a previously made backup from the
backup directory to their original locations. #复制prepare后的数据到数据目录
--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. #移动prepare后的备份数据到数据目录,谨慎使用
--stats calc statistic of datadir (offline mysqld is recommended) #统计目录信息
-v, --version print xtrabackup version information
# 用户名、密码、主机、端口
-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.
-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.
-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.
# 数据目录,需要与配置文件中的数据目录一致,如果不一致,需要使用该参数指定
-h, --datadir=name Path to the database root.
# 临时数据目录,用 : 间隔
-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.
# 备份数据存储目录
--target-dir=name destination directory
# 二进制日志配置
--log[=name] Ignored option for MySQL option compatibility
--log-bin[=name] Base name for the log sequence # 二进制日志的basename,默认为 /var/lib/mysql/binlog,如果不一致,需自行设置
--log-bin-index=name # 二进制日志索引文件名称,默认为 /var/lib/mysql/binlog.index,如果不一致,需自行设置
File that holds the names for binary log files.
--log-copy-interval=#
time interval between checks done by log copying thread
in milliseconds (default is 1 second).
# 指定复制的表,格式:databaseName[.tableName],可为正则表达式
--tables=name filtering by regexp for table names.
# 指定复制的数据库,不支持正则表达式,格式:databaseName[.tablename]
# 如果不指定[.tablename],则复制数据库下所有的表
--databases=name filtering by list of databases.
# 在文件中指定复制的数据库、表,格式同上
--tables-file=name filtering by list of the exact database.table name in the
file.
--databases-file=name
filtering by list of databases in the file.
# 不复制的数据库、表,优先级更高
--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.
# 增量复制
--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.
When creating an incremental backup, this is the directory containing
the full backup that is the base dataset for the incremental backups
增量复制时使用,该目录包含全量数据,是制作增量复制的基础数据集
--incremental-force-scan
Perform a full-scan incremental backup even in the
presence of changed page bitmap data
#增量复制时,强制扫描所有的数据页
--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.
# prepare使用参数
--incremental-dir=name
(for --prepare): apply .delta files and logfile in the
specified directory.
When preparing an incremental backup, this is the directory where the
incremental backup is combined with the full backup to make a new full backup
在增量复制数据prepare阶段,使用该目录下的数据和全量数据制作生成新的全量数据
# 增量复制prepare阶段,只应用日志,不进行回滚
--apply-log-only stop recovery process not to progress LSN after applying
log when prepare.
# 部分复制prepare阶段,新建文件用于导入另一个数据库中
--export create files to import to another database when prepare.
# 复制限流
--throttle=# limit count of IO operations (pairs of read&write) per
second to IOS values (for '--backup')
--print-param print parameter of mysqld needed for copyback.
--use-memory=# The value is used instead of buffer_pool_size
--extra-lsndir=name (for --backup): save an extra copy of the
xtrabackup_checkpoints file in this directory.
--to-archived-lsn=# Don't apply archived logs with bigger log sequence
number.
--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'.
# 文件复制并行线程数,默认为1
--parallel=# Number of threads to use for parallel datafiles transfer.
The default value is 1.
# prepare、rebuild-index使用的线程数
--rebuild-threads=# Use this number of threads to rebuild indexes in a
compact backup. Only has effect with --prepare and
--rebuild-indexes.
#压缩、解压
--compress[=name] Compress individual backup files using the specified
compression algorithm. Supported algorithms are 'quicklz'
and 'lz4'. The default algorithm is 'quicklz'. #支持的压缩算法:quicklz(默认)、lz4
--compress-threads=#
Number of threads for parallel data compression. The
default value is 1. #压缩线程,默认为1
--compress-chunk-size=#
Size of working buffer(s) for compression threads in
bytes. The default value is 64K. #压缩缓存块,默认为64k
--decompress Decompresses all files with the .qp extension in a backup
previously made with the --compress option. #解压缩,与compress对应
# 加密、解密
--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.
--decrypt=name Decrypts all files with the .xbcrypt extension in a
backup previously made with --encrypt option.
# 备份Percona-XtraDB-Cluster时使用
--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.
# 备份从节点时使用,输出主节点的日志偏移量、名称,将change master写入xtrabackup_slave_info文件
--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.
--safe-slave-backup This option stops slave SQL thread at the start of the
backup and waits 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.
# 锁相关参数
--no-lock Use this option to disable lock-ddl and 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/LOCK INSTANCE FOR BACKUP if it is
supported by server at the beginning of the backup to
block all DDL operations.
(Defaults to on; use --skip-lock-ddl to disable.)
--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.
--no-backup-locks This option controls if backup locks should be used
instead of FLUSH TABLES WITH READ LOCK on the backup
stage. It will disable lock-ddl. The option has no effect
when backup locks are not supported by the server. This
option is disabled by default, disable with
--no-backup-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
--close-files do not keep files opened. Use at your own risk.
--core-file Write core on fatal signals
--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-server-version-check
This option allows backup to proceed when the server
version is greater (newer) than the PXB supported version
--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.)
--rollback-prepared-trx
Force rollback prepared InnoDB transactions.
-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.
--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 "all".
--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)
--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.
--server-public-key-path=name
File path to the server public RSA key in PEM format.
--get-server-public-key
Get server public key
--server-public-key-path=name
File path to the server public RSA key in PEM format.
--transition-key[=name]
Transition key to encrypt tablespace keys with.
--xtrabackup-plugin-dir=name
Directory for xtrabackup plugins.
--plugin-load=name List of plugins to load.
--generate-new-master-key
Generate new master key when doing copy-back.
--generate-transition-key
Generate transition key and store it into keyring.
--keyring-file-data[=name]
Path to keyring file.
--component-keyring-file-config[=name]
Path to load keyring component config. Used for
--prepare, --move-back, --copy-back and --stats.
--strict Fail with error when invalid arguments were passed to the
xtrabackup.
--rocksdb-checkpoint-max-age=#
Maximum ROCKSB checkpoint age in seconds.
--rocksdb-checkpoint-max-count=#
Maximum count of ROCKSB checkpoints.
# InnoDB相关参数
--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-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-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-buffer-pool-filename=name
Filename to/from which to dump/load the InnoDB buffer
pool
--innodb-checksum-algorithm=name
The algorithm InnoDB uses for page checksumming. [CRC32,
STRICT_CRC32, INNODB, STRICT_INNODB, NONE, STRICT_NONE]
--innodb-log-checksums
Whether to compute and require checksums for InnoDB redo
log blocks
(Defaults to on; use --skip-innodb-log-checksums to disable.)
--innodb-undo-directory=name
Directory where undo tablespace files live, this path can
be absolute.
--innodb-directories=name
List of directories 'dir1;dir2;..;dirN' to scan for
tablespace files. Default is to scan
'innodb-data-home-dir;innodb-undo-directory;datadir'
--innodb-undo-tablespaces=#
Number of undo tablespaces to use.
--innodb-redo-log-encrypt
Enable or disable Encryption of REDO tablespace.
--innodb-undo-log-encrypt
Enable or disable Encrypt of UNDO tablespace.
--debug-sync=name Debug sync point. This is only used by the xtrabackup
test suite
--temp-tablespaces-dir=name
Directory where temp tablespace files live, this path can
be absolute.
--defaults-group=name
defaults group in config file (default "mysqld").
--open-files-limit=#
the maximum number of file descriptors to reserve with
setrlimit().
--server-id=# The server instance being backed up
--rocksdb-datadir=name
RocksDB data directory
--rocksdb-wal-dir=name
RocksDB WAL directory
#默认参数值
Variables (--variable-name=value)
and boolean options {FALSE|TRUE} Value (after reading options)
--------------------------------- ----------------------------------------
datadir /var/lib/mysql
tmpdir /tmp
log (No default value)
log-bin (No default value)
log-bin-index (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-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 littlesync
innodb-force-recovery 0
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-buffer-pool-filename (No default value)
debug-sync (No default value)
innodb-checksum-algorithm crc32
innodb-log-checksums TRUE
innodb-undo-directory (No default value)
innodb-directories (No default value)
temp-tablespaces-dir (No default value)
innodb-undo-tablespaces 2
innodb-redo-log-encrypt FALSE
innodb-undo-log-encrypt FALSE
defaults-group mysqld
open-files-limit 0
server-id 0
rocksdb-datadir (No default value)
rocksdb-wal-dir (No default value)
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
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 TRUE
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-server-version-check FALSE
no-version-check FALSE
tables-compatibility-check TRUE
no-backup-locks FALSE
rollback-prepared-trx 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
check-privileges FALSE
read-buffer-size 10485760
server-public-key-path (No default value)
get-server-public-key FALSE
server-public-key-path (No default value)
xtrabackup-plugin-dir (No default value)
plugin-load (No default value)
generate-new-master-key FALSE
generate-transition-key FALSE
keyring-file-data (No default value)
component-keyring-file-config (No default value)
parallel 1
strict FALSE
rocksdb-checkpoint-max-age 0
rocksdb-checkpoint-max-count 0
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