[Linux] MySQL 双主配置

mysql-01	192.168.1.153
mysql-02	192.168.1.154
os	rhel 7.2

 

1、mysql-01 修改配置文件

# vi /etc/my.cnf

[mysqld] server-id=153 log-bin=mysqlmaster-bin auto-increment-increment=2      # 该值为整个结构中服务器的总数 auto-increment-offset=1   # 避免主键冲突，需要设置不同

 

# systemctl restart mysqld   #重启服务

 

2、mysql-02 修改配置文件

# vi /etc/my.cnf

[mysqld] server-id=154 log-bin=mysqlmaster-bin auto-increment-increment=2 auto-increment-offset=2

 

# systemctl restart mysqld

 

3、mysql-01 新建授权账户 mysync1

mysql> GRANT REPLICATION SLAVE ON *.* TO 'mysync1'@'192.168.1.%' IDENTIFIED BY 'Ma991218##';

mysql> show master status;     # 查看状态，结果在后面有用

+------------------------+----------+--------------+------------------+-------------------+ | File                   | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------------+----------+--------------+------------------+-------------------+ | mysqlmaster-bin.000001 |      755 |              |                  |                   | +------------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec)

 

4、mysql-02 新建授权账户 mysync2

mysql> GRANT REPLICATION SLAVE ON *.* TO 'mysync2'@'192.168.1.%' IDENTIFIED BY 'Ma991218##';

mysql> show master status;

+------------------------+----------+--------------+------------------+-------------------+ | File                   | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------------+----------+--------------+------------------+-------------------+ | mysqlmaster-bin.000001 |      455 |              |                  |                   | +------------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec)

 

5、配置 mysql-01

mysql> change master to master_host='192.168.1.154',master_user='mysync2',master_password='Ma991218##',master_log_file='mysqlmaster-bin.000001',master_log_pos=455;

mysql> start slave;       # 开启复制功能

mysql> show slave status\G    #    # 查看状态

*************************** 1. row ***************************                Slave_IO_State: Waiting for master to send event                   Master_Host: 192.168.1.154                   Master_User: mysync2                   Master_Port: 3306                 Connect_Retry: 60               Master_Log_File: mysqlmaster-bin.000001           Read_Master_Log_Pos: 455                Relay_Log_File: mysql-01-relay-bin.000002                 Relay_Log_Pos: 326         Relay_Master_Log_File: mysqlmaster-bin.000001              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: 455               Relay_Log_Space: 536               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: 154                   Master_UUID: 4f1e30f3-ad54-11e7-94f6-005056a77979              Master_Info_File: /var/lib/mysql/master.info                     SQL_Delay: 0           SQL_Remaining_Delay: NULL       Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates            Master_Retry_Count: 86400                   Master_Bind:       Last_IO_Error_Timestamp:      Last_SQL_Error_Timestamp:                Master_SSL_Crl:            Master_SSL_Crlpath:            Retrieved_Gtid_Set:             Executed_Gtid_Set:                 Auto_Position: 0          Replicate_Rewrite_DB:                  Channel_Name:            Master_TLS_Version: 1 row in set (0.00 sec)

 

6、配置mysql-02

mysql> change master to master_host='192.168.1.153',master_user='mysync1',master_password='Ma991218##',master_log_file='mysqlmaster-bin.000001',master_log_pos=755;

mysql> start slave;

mysql> show slave status\G

*************************** 1. row ***************************                Slave_IO_State: Waiting for master to send event                   Master_Host: 192.168.1.153                   Master_User: mysync1                   Master_Port: 3306                 Connect_Retry: 60               Master_Log_File: mysqlmaster-bin.000001           Read_Master_Log_Pos: 755                Relay_Log_File: mysql-02-relay-bin.000002                 Relay_Log_Pos: 326         Relay_Master_Log_File: mysqlmaster-bin.000001              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: 755               Relay_Log_Space: 536               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: 153                   Master_UUID: 49f92156-ad54-11e7-9389-005056a72600              Master_Info_File: /var/lib/mysql/master.info                     SQL_Delay: 0           SQL_Remaining_Delay: NULL       Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates            Master_Retry_Count: 86400                   Master_Bind:       Last_IO_Error_Timestamp:      Last_SQL_Error_Timestamp:                Master_SSL_Crl:            Master_SSL_Crlpath:            Retrieved_Gtid_Set:             Executed_Gtid_Set:                 Auto_Position: 0          Replicate_Rewrite_DB:                  Channel_Name:            Master_TLS_Version: 1 row in set (0.00 sec)

 

7、测试

# mysql-02 新建表，插入内容

mysql> create database ceshi;

mysql> use ceshi;

mysql>  create table student(id int(10) primary keyauto_increment,name varchar(30),age tinyint(2));

mysql> insert into student (id,name,age) value(321281,"mzh",18);

 

# mysql-01 查看有无同步，并插入新数据

mysql> show databases;

+--------------------+ | Database           | +--------------------+ | information_schema | | ceshi              | | mysql              | | performance_schema | | sys                | +--------------------+ 5 rows in set (0.17 sec)

 

mysql> use ceshi;

mysql> show tables;

+-----------------+ | Tables_in_ceshi | +-----------------+ | student         | +-----------------+ 1 row in set (0.01 sec)

 

mysql> select * from student;

+--------+------+------+ | id     | name | age  | +--------+------+------+ | 321281 | mzh  |   18 | +--------+------+------+ 1 row in set (0.03 sec)

 

mysql> insert into student (id,name,age) value(2828,"hp",19);

 

# mysql-02 查看是否同步刚更新的数据

mysql> select * from student;

+--------+------+------+ | id     | name | age  | +--------+------+------+ |   2828 | hp   |   19 | | 321281 | mzh  |   18 | +--------+------+------+ 2 rows in set (0.00 sec)

 

# 数据已可以正常互相同步

 

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