实现mysql8.0主从复制

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#主机192.168.6.132，从：192.168.6.130  mysql-server 8.0.26   #主数据库配置 #修改server-id号 [root@xinye ~]#vim /etc/my.cnf [mysqld] server-id=32    #建议设置成当前设备IP尾号避免冲突   #查看二进制文件和位置 mysql> show master logs; +------------------+-----------+-----------+ | Log_name         | File_size | Encrypted | +------------------+-----------+-----------+ | mysql-bin.000001 |       156 | No        | +------------------+-----------+-----------+   #创建允许复制数据权限的账号 mysql> create user repluser@'192.168.6.%' identified by '123456'; mysql> grant replication slave on *.* to 'repluser'@'192.168.6.%';   #从节点配置 [root@centos7-130 ~]#vim /etc/my.cnf.d/mysql-server.cnf [mysqld] server-id=30  #插入数据库ID read_only=ON  #设置成只读不能修改数据 datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock log-error=/var/log/mysql/mysqld.log pid-file=/run/mysqld/mysqld.pid   #连接主数据库配置 mysql> CHANGE MASTER TO     ->   MASTER_HOST='192.168.6.132',   #主机地址     ->   MASTER_USER='repluser',             #复制数据的账号     ->   MASTER_PASSWORD='123456',      #密码     ->   MASTER_PORT=3306,     ->   MASTER_LOG_FILE='mysql-bin.000001',   #二进制文件     ->   MASTER_LOG_POS=156,                          #二进制节点     ->   MASTER_CONNECT_RETRY=10;   #使用有复制权限的用户账号连接至主服务器，并启动复制线程 mysql> start slave;   # mysql> show slave status\G *************************** 1. row ***************************                Slave_IO_State: Waiting for master to send event                   Master_Host: 192.168.6.132                   Master_User: repluser                   Master_Port: 3306                 Connect_Retry: 10               Master_Log_File: mysql-bin.000001           Read_Master_Log_Pos: 1066                Relay_Log_File: centos7-130-relay-bin.000002                 Relay_Log_Pos: 1233         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: 1066               Relay_Log_Space: 1447               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: 32                   Master_UUID: 90b7c0ef-9f4e-11ec-99b7-000c297b4c59              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             Network_Namespace:

复制冲突的解决

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#方法1 MariaDB [(none)]> stop slave; MariaDB [(none)]> set global sql_slave_skip_counter=1; #表示跳过前面一条复制事件 MariaDB [(none)]> start slave; #方法2 [root@slave1 ~]#vim /etc/my.cnf.d/mariadb-server.cnf [mysqld] slave_skip_errors=1050  #服务器选项，只读系统变量，指定跳过事件的ID [root@slave1 ~]#systemctl restart mariadb