MYSQL主从模式

启动主从

docker run -p 3307:3306 --name mysql-master -v /mydata/mysql/master/conf:/etc/mysql/conf.d  -v /mydata/mysql/master/logs:/var/log/mysql  -v /mydata/mysql/master/data:/var/lib/mysql  -e MYSQL_ROOT_PASSWORD=root -d mysql:8.0.26

docker run -p 3317:3306 --name mysql-slave -v /mydata/mysql/slave/conf:/etc/mysql/conf.d  -v /mydata/mysql/slave/logs:/var/log/mysql  -v /mydata/mysql/slave/data:/var/lib/mysql  -e MYSQL_ROOT_PASSWORD=root -d mysql:8.0.26

添加配置文件

vim /mydata/mysql/master/conf/my.cnf
 
 
[mysqld]
 
server_id=1
log-bin=mysql-bin

vim /mydata/mysql/slave/conf/my.cnf
 
[mysqld]
server_id=2
read_only=ON
super_read_only=ON

重启服务

docker restart mysql-master mysql-slave

主服务器授权

mysql> grant all privileges on *.* to root@'%' with grant option;
Query OK, 0 rows affected (0.02 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

mysql> create user 'replication'@'%' identified with mysql_native_password by '123456';
Query OK, 0 rows affected (0.00 sec)

mysql> GRANT REPLICATION SLAVE ON *.* TO 'replication'@'%';
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)


mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000003 |      156 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

从服务器开启同步

mysql> change master to master_host='192.168.126.126',master_user='replication', master_password='123456',master_log_file='mysql-bin.000003',master_log_pos=156,master_port=3307;
Query OK, 0 rows affected, 9 warnings (0.04 sec)

mysql> start slave;
Query OK, 0 rows affected, warning (0.01 sec)

mysql>  show slave status\G;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for source to send event
                  Master_Host: 192.168.126.126
                  Master_User: replication
                  Master_Port: 3307
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000003
          Read_Master_Log_Pos: 1963
               Relay_Log_File: f92ca3d92963-relay-bin.000002
                Relay_Log_Pos: 2131
        Relay_Master_Log_File: mysql-bin.000003
             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: 1963
              Relay_Log_Space: 2347
              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: 999
                  Master_UUID: b815dc92-6304-11ec-84f5-0242ac110003
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Replica 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
            Network_Namespace: 
1 row in set, 1 warning (0.00 sec)

ERROR: 
No query specified