Home >Database >Mysql Tutorial >使用xtrabackup实现MySQL主从复制_MySQL

使用xtrabackup实现MySQL主从复制_MySQL

WBOY
WBOYOriginal
2016-06-01 13:01:571038browse

环境描述

主从环境

 

 

项目

Master

Slave

OS版本

SuSE 11sp1 x86_64

SuSE 11sp1 x86_64

MySQL版本

官方版本5.5.37

官方版本5.5.37

hostname

NDMC74

NDMC75

IP

192.168.223.132

192.168.223.133

PORT

3306

3306

server-id

1323306

1333306

参数文件

/etc/my.cnf

/etc/my.cnf

DATADIR

/data/mysql/mysql3306/data

/data/mysql/mysql3306/data

主从库相关配置确认

(1)server-id配置

Master节点:

NDMC74:~ # mysql -S /tmp/mysql.sock -e "show global variables like 'server_id';"

+---------------+---------+

| Variable_name | Value |

+---------------+---------+

| server_id | 1323306 |

+---------------+---------+

Slaver节点:

NDMC75:~ # mysql -S /tmp/mysql.sock -e "show global variables like 'server_id';"

+---------------+---------+

| Variable_name | Value |

+---------------+---------+

| server_id | 1333306 |

+---------------+---------+

(2)确认binlog是否开启

NDMC74:~ # mysql -S /tmp/mysql.sock -e "show global variables like 'log_bin';"

+---------------+-------+

| Variable_name | Value |

+---------------+-------+

| log_bin | ON |

+---------------+-------+

Master上使用xtrabackup做全库备份

NDMC74:~ # innobackupex --defaults-file=/etc/my.cnf /data/backup/innobackupex

InnoDB Backup Utility v1.5.1-xtrabackup; Copyright 2003, 2009 Innobase Oy

and Percona LLC and/or its affiliates 2009-2013. All Rights Reserved.

This software is published under

the GNU GENERAL PUBLIC LICENSE Version 2, June 1991.

Get the latest version of Percona XtraBackup, documentation, and help resources:

http://www.percona.com/xb/p

140731 11:20:44 innobackupex: Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_file=/etc/my.cnf;mysql_read_default_group=xtrabackup' (using password: NO).

140731 11:20:44 innobackupex: Connected to MySQL server

140731 11:20:44 innobackupex: Executing a version check against the server...

140731 11:20:44 innobackupex: Done.

IMPORTANT: Please check that the backup run completes successfully.

At the end of a successful backup run innobackupex

prints "completed OK!".

innobackupex: Using mysql server version 5.5.37-log

innobackupex: Created backup directory /data/backup/innobackupex/2014-07-31_11-20-44

140731 11:20:44 innobackupex: Starting ibbackup with command: xtrabackup --defaults-file="/etc/my.cnf" --defaults-group="mysqld" --backup --suspend-at-end --target-dir=/data/backup/innobackupex/2014-07-31_11-20-44 --tmpdir=/tmp --extra-lsndir='/tmp'

innobackupex: Waiting for ibbackup (pid=25767) to suspend

innobackupex: Suspend file '/data/backup/innobackupex/2014-07-31_11-20-44/xtrabackup_suspended_2'

xtrabackup version 2.2.3 based on MySQL server 5.6.17 Linux (x86_64) (revision id: )

xtrabackup: uses posix_fadvise().

xtrabackup: cd to /data/mysql/mysql3306/data

xtrabackup: open files limit requested 8192, set to 8192

xtrabackup: using the following InnoDB configuration:

xtrabackup: innodb_data_home_dir = ./

xtrabackup: innodb_data_file_path = ibdata1:1G:autoextend

xtrabackup: innodb_log_group_home_dir = ./

xtrabackup: innodb_log_files_in_group = 3

xtrabackup: innodb_log_file_size = 268435456

>> log scanned up to (6118588398)

[01] Copying ./ibdata1 to /data/backup/innobackupex/2014-07-31_11-20-44/ibdata1

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

[01] ...done

[01] Copying ./test/tt.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/test/tt.ibd

[01] ...done

[01] Copying ./tp50/warehouse.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/tp50/warehouse.ibd

[01] ...done

[01] Copying ./tp50/item.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/tp50/item.ibd

[01] ...done

>> log scanned up to (6118588398)

[01] Copying ./tp50/district.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/tp50/district.ibd

[01] ...done

[01] Copying ./tp50/customer.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/tp50/customer.ibd

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

[01] ...done

[01] Copying ./tp50/history.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/tp50/history.ibd

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

[01] ...done

[01] Copying ./tp50/new_orders.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/tp50/new_orders.ibd

[01] ...done

[01] Copying ./tp50/orders.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/tp50/orders.ibd

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

[01] ...done

[01] Copying ./tp50/order_line.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/tp50/order_line.ibd

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

[01] ...done

[01] Copying ./tp50/stock.ibd to /data/backup/innobackupex/2014-07-31_11-20-44/tp50/stock.ibd

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

>> log scanned up to (6118588398)

[01] ...done

>> log scanned up to (6118588398)

xtrabackup: Creating suspend file '/data/backup/innobackupex/2014-07-31_11-20-44/xtrabackup_suspended_2' with pid '25767'

 

140731 11:22:07 innobackupex: Continuing after ibbackup has suspended

140731 11:22:07 innobackupex: Executing FLUSH TABLES WITH READ LOCK...

140731 11:22:07 innobackupex: All tables locked and flushed to disk

140731 11:22:07 innobackupex: Starting to backup non-InnoDB tables and files

innobackupex: in subdirectories of '/data/mysql/mysql3306/data'

innobackupex: Backing up files '/data/mysql/mysql3306/data/mysql/*.{frm,isl,MYD,MYI,MAD,MAI,MRG,TRG,TRN,ARM,ARZ,CSM,CSV,opt,par}' (72 files)

>> log scanned up to (6118588398)

innobackupex: Backing up file '/data/mysql/mysql3306/data/test/tt.frm'

innobackupex: Backing up file '/data/mysql/mysql3306/data/test/v1.frm'

innobackupex: Backing up file '/data/mysql/mysql3306/data/test/v2.frm'

innobackupex: Backing up file '/data/mysql/mysql3306/data/test/v3.frm'

innobackupex: Backing up files '/data/mysql/mysql3306/data/performance_schema/*.{frm,isl,MYD,MYI,MAD,MAI,MRG,TRG,TRN,ARM,ARZ,CSM,CSV,opt,par}' (18 files)

innobackupex: Backing up files '/data/mysql/mysql3306/data/tp50/*.{frm,isl,MYD,MYI,MAD,MAI,MRG,TRG,TRN,ARM,ARZ,CSM,CSV,opt,par}' (10 files)

140731 11:22:08 innobackupex: Finished backing up non-InnoDB tables and files

140731 11:22:08 innobackupex: Executing FLUSH ENGINE LOGS...

140731 11:22:08 innobackupex: Waiting for log copying to finish

xtrabackup: The latest check point (for incremental): '6118588398'

xtrabackup: Stopping log copying thread.

.>> log scanned up to (6118588398)

xtrabackup: Creating suspend file '/data/backup/innobackupex/2014-07-31_11-20-44/xtrabackup_log_copied' with pid '25767'

xtrabackup: Transaction log of lsn (6118588398) to (6118588398) was copied.

140731 11:22:09 innobackupex: All tables unlocked

innobackupex: Backup created in directory '/data/backup/innobackupex/2014-07-31_11-20-44'

innobackupex: MySQL binlog position: filename 'mysql-bin.000009', position 376

140731 11:22:09 innobackupex: Connection to database server closed

140731 11:22:09 innobackupex: completed OK!

NDMC74:~ #

NDMC74:/data/backup/innobackupex/2014-07-31_11-20-44 # ls -l

总计 1048608

-rw-r--r-- 1 root root 357 07-31 11:20 backup-my.cnf

-rw-r----- 1 root root 1073741824 07-31 11:20 ibdata1

drwxr-xr-x 2 root root 4096 07-31 11:22 mysql

drwxr-xr-x 2 root root 4096 07-31 11:22 performance_schema

drwx------ 2 root root 71 07-31 11:22 test

drwx------ 2 root root 4096 07-31 11:22 tp50

-rw-r--r-- 1 root root 23 07-31 11:22 xtrabackup_binlog_info

-rw-r----- 1 root root 95 07-31 11:22 xtrabackup_checkpoints

-rw-r--r-- 1 root root 572 07-31 11:22 xtrabackup_info

-rw-r----- 1 root root 2560 07-31 11:22 xtrabackup_logfile

为了保证备份集中的数据一致,需要操作:

NDMC74:~ # innobackupex --apply-log /data/backup/innobackupex/2014-07-31_11-20-44

InnoDB Backup Utility v1.5.1-xtrabackup; Copyright 2003, 2009 Innobase Oy

and Percona LLC and/or its affiliates 2009-2013. All Rights Reserved.

This software is published under

the GNU GENERAL PUBLIC LICENSE Version 2, June 1991.

Get the latest version of Percona XtraBackup, documentation, and help resources:

http://www.percona.com/xb/p

IMPORTANT: Please check that the apply-log run completes successfully.

At the end of a successful apply-log run innobackupex

prints "completed OK!".

140731 11:28:16 innobackupex: Starting ibbackup with command: xtrabackup --defaults-file="/data/backup/innobackupex/2014-07-31_11-20-44/backup-my.cnf" --defaults-group="mysqld" --prepare --target-dir=/data/backup/innobackupex/2014-07-31_11-20-44 --tmpdir=/tmp

xtrabackup version 2.2.3 based on MySQL server 5.6.17 Linux (x86_64) (revision id: )

xtrabackup: cd to /data/backup/innobackupex/2014-07-31_11-20-44

xtrabackup: This target seems to be not prepared yet.

xtrabackup: xtrabackup_logfile detected: size=2097152, start_lsn=(6118588398)

xtrabackup: using the following InnoDB configuration for recovery:

xtrabackup: innodb_data_home_dir = ./

xtrabackup: innodb_data_file_path = ibdata1:1G:autoextend

xtrabackup: innodb_log_group_home_dir = ./

xtrabackup: innodb_log_files_in_group = 1

xtrabackup: innodb_log_file_size = 2097152

xtrabackup: using the following InnoDB configuration for recovery:

xtrabackup: innodb_data_home_dir = ./

xtrabackup: innodb_data_file_path = ibdata1:1G:autoextend

xtrabackup: innodb_log_group_home_dir = ./

xtrabackup: innodb_log_files_in_group = 1

xtrabackup: innodb_log_file_size = 2097152

xtrabackup: Starting InnoDB instance for recovery.

xtrabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter)

InnoDB: Using atomics to ref count buffer pool pages

InnoDB: The InnoDB memory heap is disabled

InnoDB: Mutexes and rw_locks use GCC atomic builtins

InnoDB: Compressed tables use zlib 1.2.3

InnoDB: Using CPU crc32 instructions

InnoDB: Initializing buffer pool, size = 100.0M

InnoDB: Completed initialization of buffer pool

InnoDB: Highest supported file format is Barracuda.

InnoDB: 128 rollback segment(s) are active.

InnoDB: Waiting for purge to start

InnoDB: 5.6.17 started; log sequence number 6118588398

[notice (again)]

If you use binary log and don't use any hack of group commit,

the binary log position seems to be:

InnoDB: Last MySQL binlog file position 0 324258362, file name ./mysql-bin.000008

xtrabackup: starting shutdown with innodb_fast_shutdown = 1

InnoDB: FTS optimize thread exiting.

InnoDB: Starting shutdown...

InnoDB: Shutdown completed; log sequence number 6118588408

140731 11:28:18 innobackupex: Restarting xtrabackup with command: xtrabackup --defaults-file="/data/backup/innobackupex/2014-07-31_11-20-44/backup-my.cnf" --defaults-group="mysqld" --prepare --target-dir=/data/backup/innobackupex/2014-07-31_11-20-44 --tmpdir=/tmp

for creating ib_logfile*

xtrabackup version 2.2.3 based on MySQL server 5.6.17 Linux (x86_64) (revision id: )

xtrabackup: cd to /data/backup/innobackupex/2014-07-31_11-20-44

xtrabackup: This target seems to be already prepared.

xtrabackup: notice: xtrabackup_logfile was already used to '--prepare'.

xtrabackup: using the following InnoDB configuration for recovery:

xtrabackup: innodb_data_home_dir = ./

xtrabackup: innodb_data_file_path = ibdata1:1G:autoextend

xtrabackup: innodb_log_group_home_dir = ./

xtrabackup: innodb_log_files_in_group = 3

xtrabackup: innodb_log_file_size = 268435456

xtrabackup: using the following InnoDB configuration for recovery:

xtrabackup: innodb_data_home_dir = ./

xtrabackup: innodb_data_file_path = ibdata1:1G:autoextend

xtrabackup: innodb_log_group_home_dir = ./

xtrabackup: innodb_log_files_in_group = 3

xtrabackup: innodb_log_file_size = 268435456

xtrabackup: Starting InnoDB instance for recovery.

xtrabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter)

InnoDB: Using atomics to ref count buffer pool pages

InnoDB: The InnoDB memory heap is disabled

InnoDB: Mutexes and rw_locks use GCC atomic builtins

InnoDB: Compressed tables use zlib 1.2.3

InnoDB: Using CPU crc32 instructions

InnoDB: Initializing buffer pool, size = 100.0M

InnoDB: Completed initialization of buffer pool

InnoDB: Setting log file ./ib_logfile101 size to 256 MB

InnoDB: Progress in MB: 100 200

InnoDB: Setting log file ./ib_logfile1 size to 256 MB

InnoDB: Progress in MB: 100 200

InnoDB: Setting log file ./ib_logfile2 size to 256 MB

InnoDB: Progress in MB: 100 200

InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0

InnoDB: New log files created, LSN=6118588408

InnoDB: Highest supported file format is Barracuda.

InnoDB: 128 rollback segment(s) are active.

InnoDB: Waiting for purge to start

InnoDB: 5.6.17 started; log sequence number 6118588428

[notice (again)]

If you use binary log and don't use any hack of group commit,

the binary log position seems to be:

InnoDB: Last MySQL binlog file position 0 324258362, file name ./mysql-bin.000008

xtrabackup: starting shutdown with innodb_fast_shutdown = 1

InnoDB: FTS optimize thread exiting.

InnoDB: Starting shutdown...

InnoDB: Shutdown completed; log sequence number 6118588438

140731 11:28:26 innobackupex: completed OK!

NDMC74:~ # 

Master上创建同步账号并授权REPLICATION

mysql> CREATE USER 'repl'@'192.168.223.%' IDENTIFIED BY 'replpass';

Query OK, 0 rows affected (0.02 sec)

mysql> GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'repl'@'192.168.223.%';

Query OK, 0 rows affected (0.02 sec)

然后在Slave上测试,看看能否使用repl用户登录Master服务器:

NDMC75:~ # mysql -h192.168.223.132 -urepl -preplpass

mysql> show grants\G

*************************** 1. row ***************************

Grants for repl@192.168.223.%: GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'repl'@'192.168.223.%' IDENTIFIED BY PASSWORD '*D98280F03D0F78162EBDBB9C883FC01395DEA2BF'

1 row in set (0.00 sec) 

将Master的全备scp到Slave主机上

NDMC74:~ # cd /data/backup/innobackupex/

NDMC74:/data/backup/innobackupex # scp -r ./2014-07-31_11-20-44 192.168.223.133:/data/backup

将Slave上的MySQL停掉,然后将Master的备份文件放到Slave的datadir目录下:

NDMC75:~ # mv /data/backup/2014-07-31_11-20-44 /data/mysql/mysql3306/data

NDMC75:~ # cd /data/mysql/mysql3306

NDMC75:/data/mysql/mysql3306 # chown -R mysql:mysql data

注意:Slave的my.cnf文件和Master的一样,只是修改一下server-id即可。

启动Slave数据库

NDMC75:~ # /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf &

NDMC75:~ # ps -ef |grep mysqld

mysql 1293 1 1 11:50 pts/0 00:00:01 /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf

root 3124 19598 0 11:51 pts/0 00:00:00 grep mysqld

同时查看一下error.log文件,看看有没有错误信息。

在slave上执行change master设置主服务器复制信息

Master binlog信息从备份文件中可以获得:

NDMC74:~ # cd /data/backup/innobackupex/2014-07-31_11-20-44

NDMC74:~ # cat xtrabackup_binlog_info

mysql-bin.000009 376

mysql> change master to master_host='192.168.223.132', master_user='repl', master_password='replpass',master_port=3306,master_log_file='mysql-bin.000009',master_log_pos=376;

Query OK, 0 rows affected (0.05 sec)

在slave上启动复制

mysql> start slave;

Query OK, 0 rows affected (0.00 sec)

检查主从复制是否正常

mysql> show slave status\G

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 192.168.223.132

Master_User: repl

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: mysql-bin.000009

Read_Master_Log_Pos: 452

Relay_Log_File: mysql-relay-bin.000002

Relay_Log_Pos: 329

Relay_Master_Log_File: mysql-bin.000009

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

Replicate_Do_DB:

Replicate_Ignore_DB:

Replicate_Do_Table:

Replicate_Ignore_Table:

Replicate_Wild_Do_Table:

Replicate_Wild_Ignore_Table:

Last_Errno: 0

Last_Error:

Skip_Counter: 0

Exec_Master_Log_Pos: 452

Relay_Log_Space: 485

Until_Condition: None

Until_Log_File:

Until_Log_Pos: 0

Master_SSL_Allowed: No

Master_SSL_CA_File:

Master_SSL_CA_Path:

Master_SSL_Cert:

Master_SSL_Cipher:

Master_SSL_Key:

Seconds_Behind_Master: 0

Master_SSL_Verify_Server_Cert: No

Last_IO_Errno: 0

Last_IO_Error:

Last_SQL_Errno: 0

Last_SQL_Error:

Replicate_Ignore_Server_Ids:

Master_Server_Id: 1323306

1 row in set (0.00 sec)

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn