mysql-8.0.13-linux-glibc2.12-x86_64主从复制环境搭建

附安装教学视频（高手请绕过，本教程仅适用于新手，有什么错误和不足的地方还请大家留言指正），链接如下：

https://www.bilibili.com/video/av36535481?share_medium=android&share_source=qq&bbid=F498D891-554A-48A7-9815-CC582ADF8DF327875infoc&ts=1542939432515

1. 准备好两台搭建好mysql-8.0.13-linux-glibc2.12-x86_64的虚拟机

主服务器配置：

1. 修改配置文件

在[mysqld]中添加如下字段

log-bin=mysql-bin

     server-id=1

1. 重启mysql服务器

service mysqld restart

1. 配置或关闭主服务器的防火墙，因为要用从服务器连接

service firewalld stop

1. 在主服务器master中新建从服务器用来复制日志文件的账户

     create user ‘repl’@’IP’ identified by ‘password’;

说明：IP为从服务器的IP地址，’password’为从  服务器用来登录的密码

1. 给新建账户授权

grant replication slave on *.* to ‘repl’@’IP’;

从服务器配置：

1. 修改配置文件

在[mysqld]中添加如下字段

log-bin=mysql-bin

       server-id=2

1. 重启mysql服务

service mysqld restart

1. 在主服务器上查看配置信息

show master status;

mysql> show master status

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

| mysql-bin.000001 |      711 |              |                 

1. 在从服务器上配置，并开启主从复制

配置：

change master to master_host=’IP’,master_user=’repl’,master_password=’password’,master_log_file=’’,master_log_pos=;

注：master_log_file,master_log_pos的内容根据第九步查出的内容进行填写

例：mysql> change master to master_host='192.168.174.130',master_user='repl',master_password='111',master_log_file='mysql-bin.000001',master_log_pos=711;

Query OK, 0 rows affected, 2 warnings (1.75 sec)

mysql> start slave;

Query OK, 0 rows affected (0.09 sec)

1. 查看slave配置信息是否出错，如果出错解决错误后再进行测试。

show slave status \G

注：如果报下面的错误，请先在从服务器上用主从复制账号连接主服务器，成功连接后，再进行主从复制测试

mysql> show slave status \G

报错提示信息如下：

       Last_IO_Errno: 2061

       Last_IO_Error: error connecting to master '[email protected]:3306' - retry-time: 60  retries: 1

 成功后的完整显示如下：

mysql> show slave status \G

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

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 192.168.174.130

                  Master_User: repl

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000001

          Read_Master_Log_Pos: 711

               Relay_Log_File: localhost-relay-bin.000002

                Relay_Log_Pos: 322

        Relay_Master_Log_File: mysql-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: 711

              Relay_Log_Space: 534

              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: a4382f20-ee42-11e8-99ff-000c293cb1c4

             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 (0.00 sec)        

1. 主从复制测试

在主服务器上进行测试，在从服务器上进行查看结果

mysql> show databases;

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

| Database           |

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

| information_schema |

| mysql              |

| performance_schema |

| sys                |

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

4 rows in set (0.00 sec)

mysql> create databases info;

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'databases info' at line 1

mysql> create database info;

Query OK, 1 row affected (0.15 sec)

mysql> show databases;

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

| Database           |

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

| info               |

| information_schema |

| mysql              |

| performance_schema |

| sys                |

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

5 rows in set (0.00 sec)

从服务器上显示结果：

mysql> show databases;

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

| Database           |

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

| information_schema |

| mysql              |

| performance_schema |

| sys                |

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

4 rows in set (0.71 sec)

mysql> show databases;

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

| Database           |

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

| info               |

| information_schema |

| mysql              |

| performance_schema |

| sys                |

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