主数据库(1号机器)

数据库创建基本环境数据

mysql> create database a;                                     //创建数据库a
mysql> create table a.a (id int);                             //创建列表a
mysql> insert into a.a values (1);                            //添加数据1
mysql> select * from a.a;                                     //查看数据
+------+
| id   |
+------+
|    1 |
+------+
1 row in set (0.00 sec)

开启二进制文件

echo -e 'log_bin\nserver-id=3' >> /etc/my.cnf

创建一个复制的授权用户

grant replication slave, replication client on *.* to 'rep'@'192.168.139.%' identified by 'QianFeng@123';

查看主数据库存储位置

mysql> show master status\G
*************************** 1. row ***************************
             File: MYSQL-bin.000005     //master_log_pos=889
         Position: 889                            //master_log_file='MYSQL-bin.000005'
     Binlog_Do_DB: 
 Binlog_Ignore_DB: 
Executed_Gtid_Set: 
1 row in set (0.00 sec)

将主数据库整个数据库备份

mysqldump -p'QianFeng@123' --all-databases --single-transaction --master-data=2 --flush-logs > `date +%F`-mysql-all.sql

将备份文件发送给从数据库

scp 2019-10-04-mysql-all.sql master2:/tmp/

查看当前备份到哪个点

sed -n '22p' 备份的文件名

-- CHANGE MASTER TO MASTER_LOG_FILE='MYSQL-bin.000004', MASTER_LOG_POS=154;

模拟增加数据

insert into a.a values (2);

查看当前用户在本数据库的权限

show grants;

从数据库(2号机器)

用新授权的账号测试是否能连接主数据库

目的是为了测试这个用户是否可以登陆，为后面复制做准备

mysql -hmaster1 -urep -p'QianFeng@123'

登陆自己的数据库进行数据导入

mysql -uroot -p'QianFeng@123'

临时关闭二进制文件

mysql> set sql_log_bin=0;

导入主数据库的二进制文件

mysql> source /tmp/2019-10-04-mysql-all.sql;

复制连接主数据库

mysql> change master to
master_host='master1',
master_user='rep',
master_password='QianFeng@123';
master_log_file='MYSQL-bin.000004'
master_log_pos=154;

启动从设备

mysql> start slave;

查看启动状态

mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: master1
                  Master_User: rep
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: MYSQL-bin.000005
          Read_Master_Log_Pos: 1134
               Relay_Log_File: web3-relay-bin.000003
                Relay_Log_Pos: 1301
        Relay_Master_Log_File: MYSQL-bin.000005
             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: 1134
              Relay_Log_Space: 1508
              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: 1
                  Master_UUID: 196f050b-e631-11e9-88d1-000c29ea4f01
             Master_Info_File: mysql.slave_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: 
       Master_public_key_path: 
        Get_master_public_key: 0
1 row in set (0.01 sec)

至此部署完成

查看测试结果

主数据库插入新的数据
mysql> insert into a.a values (10);
Query OK, 1 row affected (0.00 sec)
mysql> select * from a.a;
+------+
| id   |
+------+
|    1 |
|   10 |
+------+
2 rows in set (0.01 sec)

在从数据库上查看是否更新成功

mysql> select * from a.a;
+------+
| id   |
+------+
|    1 |
|   10 |
+------+
2 rows in set (0.01 sec)

完成