基于Linux上Mysql8主从设置

上一篇已经说明了Mysql8的安装方法，这篇来说说主从怎么配置

一、配置修改

# 除去其他的，最关键的就是下面这些了，其实在上一篇里面已经设置好了
[mysqld3306]   
server_id=3306  
binlog_format = mixed  
log-bin = /mysql_data/data3306/mysql3306_bin  
   
[mysqld3307]  
server_id=3307  
binlog_format = mixed  
log-bin = /mysql_data/data3307/mysql3307_bin    

二、Mysql主设置

1）确保 3306 与 3307 的Mysql是开启的，这里准备使用3306作为主，3307作为从

# 进入3306的Mysql，添加一个可以同步的账户
create user salve_1 IDENTIFIED BY "password-vvv";
grant replication slave on *.* to "salve_1"@"%";

2）show master statusG;

*************************** 1. row ***************************
File: mysql3306_bin.000007
Position: 156

三、Mysql从设置

change master to master_host="172.22.70.218",  # 主IP
master_port=3307, # 主端口
master_user="slave_1", # 可以用来同步的用户
master_password="password-vvv", # 用户对应的密码
master_log_file="mysql3306_bin.000007", # 主上面的文件
master_log_pos=156; # 主上面对应的位置

注意：这里的ip地址不要填写127.0.0.1，其他的数据都是活的，请合理替换

# show slave statusG;

mysql> show slave statusG;
*************************** 1. row ***************************
               Slave_IO_State: 
                  Master_Host: 172.22.70.218
                  Master_User: slave_1
                  Master_Port: 3307
                Connect_Retry: 60
              Master_Log_File: mysql3306_bin.000007
          Read_Master_Log_Pos: 156
               Relay_Log_File: localhost-relay-bin.000001
                Relay_Log_Pos: 4
        Relay_Master_Log_File: mysql3306_bin.000007
             Slave_IO_Running: No
            Slave_SQL_Running: No
              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: 156
              Relay_Log_Space: 156
              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: NULL
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: 0
                  Master_UUID: 
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: 
           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 (0.00 sec)