MySQL5.7 - 基于GTID复制模式构建主从复制

发布时间：2023-08-10 14:35:38 所属栏目：MySql教程来源：

导读：环境：

MySQL5.7.24版本

CentOS release 6.5

注意：

MySQL5.7版本Slave可以不开启binlog了，可以节省这部分的磁盘I/O消耗，而MySQL5.6版本必须开启binlog，因为GTID信息需要在binlog中存储（log_sla

环境：

MySQL5.7.24版本

CentOS release 6.5

注意：

MySQL5.7版本Slave可以不开启binlog了，可以节省这部分的磁盘I/O消耗，而MySQL5.6版本必须开启binlog，因为GTID信息需要在binlog中存储（log_slave_updates），只有开启binlog才能使用GTID的功能。MySQL5.7版本通过GTID系统表来记录GITD信息（mysql.gtid_executed），每个事务提交时，将GTID信息插入到表中

Master配置：

[root@master ~]# cat /etc/my.cnf

server_id=1

gtid_mode=on

enforce_gtid_consistency=on

log_bin=/var/lib/mysql/binlog

binlog_format=row

character_set_server=utf8

[root@master ~]# service mysqld restart

Slave配置：

[root@slave ~]# cat /etc/my.cnf

server_id=2

gtid_mode=on

enforce_gtid_consistency=on

binlog_format=row

relay_log=/var/lib/mysql/relaylog

replicate_do_db=edusoho_e

character_set_server=utf8

[root@slave ~]# service mysqld restart

Master：

查看当前binlog情况：

mysql> show master status;

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

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

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

| mysql-bin.000001 |      154 |              |                  |                   |

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

1 row in set (0.00 sec)

授权复制连接用户：

mysql> grant replication slave on *.*to repliter@'192.168.32.2' identified by PASSWORD '*6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9';

Query OK, 0 rows affected, 2 warnings (0.00 sec)

mysql> show warnings;

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

| Level   | Code | Message                                                                                                                               |

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

| Warning | 1287 | 'IDENTIFIED BY PASSWORD' is deprecated and will be removed in a future release. Please use IDENTIFIED WITH <plugin> AS <hash> instead |

| Warning | 1287 | Using GRANT for creating new user is deprecated and will be removed in future release. Create new user with CREATE USER statement.    |

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

2 rows in set (0.00 sec)

创建statistic库：

mysql> create database statistic;

Query OK, 1 row affected (0.01 sec)

创建statistic.t1表：

CREATE TABLE `statistic`.`t1` (

`id` INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,

`xname` VARCHAR(20) NOT NULL DEFAULT '',

`address` CHAR(20) NOT NULL DEFAULT '',

`sex` TINYINT(1) NOT NULL DEFAULT '1',

`hobby` VARCHAR(30) NOT NULL DEFAULT '',

`age` TINYINT(2) DEFAULT '18',

PRIMARY KEY (`id`),

KEY `idx_name` (`xname`)

) ENGINE=INNODB DEFAULT CHARSET=utf8;

创建edusoho_e库：

mysql> create database edusoho_e;

Query OK, 1 row affected (0.01 sec)

创建edusoho_e.t1表：

CREATE TABLE `edusoho_e`.`t1` (

`id` INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,

`xname` VARCHAR(20) NOT NULL DEFAULT '',

`address` CHAR(20) NOT NULL DEFAULT '',

`sex` TINYINT(1) NOT NULL DEFAULT '1',

`hobby` VARCHAR(30) NOT NULL DEFAULT '',

`age` TINYINT(2) DEFAULT '18',

PRIMARY KEY (`id`),

KEY `idx_name` (`xname`)

) ENGINE=INNODB DEFAULT CHARSET=utf8;

INSERT INTO `statistic`.`t1` (`xname`, `address`, `hobby`) VALUES ('statistic', '北京', '游戏');

INSERT INTO `edusoho_e`.`t1` (`xname`, `address`, `hobby`) VALUES ('edusoho_e', '上海', '开发');

查看当前binlog情况：

mysql> show master status;

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

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set                        |

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

| mysql-bin.000001 |     2443 |              |                  | c13c1b45-2741-11e9-abb0-000c29b85ea6:1-7 |

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

1 row in set (0.00 sec)

准备复制数据：

[root@master ~]# mysqldump -uroot -p -B edusoho_e > `date +%F`.sql （警告什么信息，自行查阅帮助的）

Enter password:

Warning: A partial dump from a server that has GTIDs will by default include the GTIDs of all transactions, even those that changed suppressed parts of the database. If you don't want to restore GTIDs, pass --set-gtid-purged=OFF. To make a complete dump, pass --all-databases --triggers --routines --even

Slave导入复制数据：

[root@slave ~]# mysql -uroot -p < 2019-05-29.sql

Enter password:

Slave开始数据复制：

mysql> change master to master_auto_position=1,master_host='192.168.32.3',master_port=3306;

Query OK, 0 rows affected (0.04 sec)

mysql> start slave user='repliter' password='123456';   （会滚动 relay log 日志文件）

Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql> show slave status\G;

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

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

Retrieved_Gtid_Set:

Executed_Gtid_Set: c13c1b45-2741-11e9-abb0-000c29b85ea6:1-7

Auto_Position: 1

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